diff options
Diffstat (limited to 'drivers/usb')
74 files changed, 3920 insertions, 567 deletions
diff --git a/drivers/usb/chipidea/ci_hdrc_tegra.c b/drivers/usb/chipidea/ci_hdrc_tegra.c index 7f4d2b6af37a..772851bee99b 100644 --- a/drivers/usb/chipidea/ci_hdrc_tegra.c +++ b/drivers/usb/chipidea/ci_hdrc_tegra.c @@ -33,11 +33,11 @@ static const struct tegra_udc_soc_info tegra30_udc_soc_info = { }; static const struct tegra_udc_soc_info tegra114_udc_soc_info = { - .flags = 0, + .flags = CI_HDRC_REQUIRES_ALIGNED_DMA, }; static const struct tegra_udc_soc_info tegra124_udc_soc_info = { - .flags = 0, + .flags = CI_HDRC_REQUIRES_ALIGNED_DMA, }; static const struct of_device_id tegra_udc_of_match[] = { diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 75c4623ad779..27346d69f393 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -276,6 +276,7 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf) { int newctrl; int difference; + unsigned long flags; struct usb_cdc_notification *dr = (struct usb_cdc_notification *)buf; unsigned char *data = buf + sizeof(struct usb_cdc_notification); @@ -303,7 +304,7 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf) } difference = acm->ctrlin ^ newctrl; - spin_lock(&acm->read_lock); + spin_lock_irqsave(&acm->read_lock, flags); acm->ctrlin = newctrl; acm->oldcount = acm->iocount; @@ -321,7 +322,7 @@ static void acm_process_notification(struct acm *acm, unsigned char *buf) acm->iocount.parity++; if (difference & ACM_CTRL_OVERRUN) acm->iocount.overrun++; - spin_unlock(&acm->read_lock); + spin_unlock_irqrestore(&acm->read_lock, flags); if (difference) wake_up_all(&acm->wioctl); @@ -1378,6 +1379,9 @@ made_compressed_probe: if (acm == NULL) goto alloc_fail; + tty_port_init(&acm->port); + acm->port.ops = &acm_port_ops; + minor = acm_alloc_minor(acm); if (minor < 0) goto alloc_fail1; @@ -1413,22 +1417,20 @@ made_compressed_probe: acm->out = usb_sndintpipe(usb_dev, epwrite->bEndpointAddress); else acm->out = usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress); - tty_port_init(&acm->port); - acm->port.ops = &acm_port_ops; init_usb_anchor(&acm->delayed); acm->quirks = quirks; buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma); if (!buf) - goto alloc_fail2; + goto alloc_fail1; acm->ctrl_buffer = buf; if (acm_write_buffers_alloc(acm) < 0) - goto alloc_fail4; + goto alloc_fail2; acm->ctrlurb = usb_alloc_urb(0, GFP_KERNEL); if (!acm->ctrlurb) - goto alloc_fail5; + goto alloc_fail3; for (i = 0; i < num_rx_buf; i++) { struct acm_rb *rb = &(acm->read_buffers[i]); @@ -1437,13 +1439,13 @@ made_compressed_probe: rb->base = usb_alloc_coherent(acm->dev, readsize, GFP_KERNEL, &rb->dma); if (!rb->base) - goto alloc_fail6; + goto alloc_fail4; rb->index = i; rb->instance = acm; urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) - goto alloc_fail6; + goto alloc_fail4; urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; urb->transfer_dma = rb->dma; @@ -1465,7 +1467,7 @@ made_compressed_probe: snd->urb = usb_alloc_urb(0, GFP_KERNEL); if (snd->urb == NULL) - goto alloc_fail7; + goto alloc_fail5; if (usb_endpoint_xfer_int(epwrite)) usb_fill_int_urb(snd->urb, usb_dev, acm->out, @@ -1483,7 +1485,7 @@ made_compressed_probe: i = device_create_file(&intf->dev, &dev_attr_bmCapabilities); if (i < 0) - goto alloc_fail7; + goto alloc_fail5; if (h.usb_cdc_country_functional_desc) { /* export the country data */ struct usb_cdc_country_functional_desc * cfd = @@ -1542,7 +1544,7 @@ skip_countries: &control_interface->dev); if (IS_ERR(tty_dev)) { rv = PTR_ERR(tty_dev); - goto alloc_fail8; + goto alloc_fail6; } if (quirks & CLEAR_HALT_CONDITIONS) { @@ -1551,7 +1553,7 @@ skip_countries: } return 0; -alloc_fail8: +alloc_fail6: if (acm->country_codes) { device_remove_file(&acm->control->dev, &dev_attr_wCountryCodes); @@ -1560,23 +1562,21 @@ alloc_fail8: kfree(acm->country_codes); } device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); -alloc_fail7: +alloc_fail5: usb_set_intfdata(intf, NULL); for (i = 0; i < ACM_NW; i++) usb_free_urb(acm->wb[i].urb); -alloc_fail6: +alloc_fail4: for (i = 0; i < num_rx_buf; i++) usb_free_urb(acm->read_urbs[i]); acm_read_buffers_free(acm); usb_free_urb(acm->ctrlurb); -alloc_fail5: +alloc_fail3: acm_write_buffers_free(acm); -alloc_fail4: - usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); alloc_fail2: - acm_release_minor(acm); + usb_free_coherent(usb_dev, ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); alloc_fail1: - kfree(acm); + tty_port_put(&acm->port); alloc_fail: return rv; } diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index a0d284ef3f40..bec581fb7c63 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -96,6 +96,7 @@ struct wdm_device { struct mutex rlock; wait_queue_head_t wait; struct work_struct rxwork; + struct work_struct service_outs_intr; int werr; int rerr; int resp_count; @@ -141,26 +142,26 @@ found: static void wdm_out_callback(struct urb *urb) { struct wdm_device *desc; + unsigned long flags; + desc = urb->context; - spin_lock(&desc->iuspin); + spin_lock_irqsave(&desc->iuspin, flags); desc->werr = urb->status; - spin_unlock(&desc->iuspin); + spin_unlock_irqrestore(&desc->iuspin, flags); kfree(desc->outbuf); desc->outbuf = NULL; clear_bit(WDM_IN_USE, &desc->flags); wake_up(&desc->wait); } -/* forward declaration */ -static int service_outstanding_interrupt(struct wdm_device *desc); - static void wdm_in_callback(struct urb *urb) { + unsigned long flags; struct wdm_device *desc = urb->context; int status = urb->status; int length = urb->actual_length; - spin_lock(&desc->iuspin); + spin_lock_irqsave(&desc->iuspin, flags); clear_bit(WDM_RESPONDING, &desc->flags); if (status) { @@ -209,8 +210,6 @@ static void wdm_in_callback(struct urb *urb) } } skip_error: - set_bit(WDM_READ, &desc->flags); - wake_up(&desc->wait); if (desc->rerr) { /* @@ -219,14 +218,17 @@ skip_error: * We should respond to further attempts from the device to send * data, so that we can get unstuck. */ - service_outstanding_interrupt(desc); + schedule_work(&desc->service_outs_intr); + } else { + set_bit(WDM_READ, &desc->flags); + wake_up(&desc->wait); } - - spin_unlock(&desc->iuspin); + spin_unlock_irqrestore(&desc->iuspin, flags); } static void wdm_int_callback(struct urb *urb) { + unsigned long flags; int rv = 0; int responding; int status = urb->status; @@ -286,7 +288,7 @@ static void wdm_int_callback(struct urb *urb) goto exit; } - spin_lock(&desc->iuspin); + spin_lock_irqsave(&desc->iuspin, flags); responding = test_and_set_bit(WDM_RESPONDING, &desc->flags); if (!desc->resp_count++ && !responding && !test_bit(WDM_DISCONNECTING, &desc->flags) @@ -294,7 +296,7 @@ static void wdm_int_callback(struct urb *urb) rv = usb_submit_urb(desc->response, GFP_ATOMIC); dev_dbg(&desc->intf->dev, "submit response URB %d\n", rv); } - spin_unlock(&desc->iuspin); + spin_unlock_irqrestore(&desc->iuspin, flags); if (rv < 0) { clear_bit(WDM_RESPONDING, &desc->flags); if (rv == -EPERM) @@ -758,6 +760,21 @@ static void wdm_rxwork(struct work_struct *work) } } +static void service_interrupt_work(struct work_struct *work) +{ + struct wdm_device *desc; + + desc = container_of(work, struct wdm_device, service_outs_intr); + + spin_lock_irq(&desc->iuspin); + service_outstanding_interrupt(desc); + if (!desc->resp_count) { + set_bit(WDM_READ, &desc->flags); + wake_up(&desc->wait); + } + spin_unlock_irq(&desc->iuspin); +} + /* --- hotplug --- */ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep, @@ -779,6 +796,7 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor desc->inum = cpu_to_le16((u16)intf->cur_altsetting->desc.bInterfaceNumber); desc->intf = intf; INIT_WORK(&desc->rxwork, wdm_rxwork); + INIT_WORK(&desc->service_outs_intr, service_interrupt_work); rv = -EINVAL; if (!usb_endpoint_is_int_in(ep)) @@ -964,6 +982,7 @@ static void wdm_disconnect(struct usb_interface *intf) mutex_lock(&desc->wlock); kill_urbs(desc); cancel_work_sync(&desc->rxwork); + cancel_work_sync(&desc->service_outs_intr); mutex_unlock(&desc->wlock); mutex_unlock(&desc->rlock); @@ -1006,6 +1025,7 @@ static int wdm_suspend(struct usb_interface *intf, pm_message_t message) /* callback submits work - order is essential */ kill_urbs(desc); cancel_work_sync(&desc->rxwork); + cancel_work_sync(&desc->service_outs_intr); } if (!PMSG_IS_AUTO(message)) { mutex_unlock(&desc->wlock); @@ -1065,6 +1085,7 @@ static int wdm_pre_reset(struct usb_interface *intf) mutex_lock(&desc->wlock); kill_urbs(desc); cancel_work_sync(&desc->rxwork); + cancel_work_sync(&desc->service_outs_intr); return 0; } diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index d058d7a31e7c..407a7a6198a2 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -292,6 +292,7 @@ static void usblp_bulk_read(struct urb *urb) { struct usblp *usblp = urb->context; int status = urb->status; + unsigned long flags; if (usblp->present && usblp->used) { if (status) @@ -299,14 +300,14 @@ static void usblp_bulk_read(struct urb *urb) "nonzero read bulk status received: %d\n", usblp->minor, status); } - spin_lock(&usblp->lock); + spin_lock_irqsave(&usblp->lock, flags); if (status < 0) usblp->rstatus = status; else usblp->rstatus = urb->actual_length; usblp->rcomplete = 1; wake_up(&usblp->rwait); - spin_unlock(&usblp->lock); + spin_unlock_irqrestore(&usblp->lock, flags); usb_free_urb(urb); } @@ -315,6 +316,7 @@ static void usblp_bulk_write(struct urb *urb) { struct usblp *usblp = urb->context; int status = urb->status; + unsigned long flags; if (usblp->present && usblp->used) { if (status) @@ -322,7 +324,7 @@ static void usblp_bulk_write(struct urb *urb) "nonzero write bulk status received: %d\n", usblp->minor, status); } - spin_lock(&usblp->lock); + spin_lock_irqsave(&usblp->lock, flags); if (status < 0) usblp->wstatus = status; else @@ -330,7 +332,7 @@ static void usblp_bulk_write(struct urb *urb) usblp->no_paper = 0; usblp->wcomplete = 1; wake_up(&usblp->wwait); - spin_unlock(&usblp->lock); + spin_unlock_irqrestore(&usblp->lock, flags); usb_free_urb(urb); } diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 529295a17579..83ffa5a14c3d 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -18,6 +18,7 @@ #include <linux/poll.h> #include <linux/mutex.h> #include <linux/usb.h> +#include <linux/compat.h> #include <linux/usb/tmc.h> @@ -30,6 +31,8 @@ */ #define USBTMC_SIZE_IOBUFFER 2048 +/* Minimum USB timeout (in milliseconds) */ +#define USBTMC_MIN_TIMEOUT 100 /* Default USB timeout (in milliseconds) */ #define USBTMC_TIMEOUT 5000 @@ -67,6 +70,7 @@ struct usbtmc_device_data { const struct usb_device_id *id; struct usb_device *usb_dev; struct usb_interface *intf; + struct list_head file_list; unsigned int bulk_in; unsigned int bulk_out; @@ -87,7 +91,6 @@ struct usbtmc_device_data { int iin_interval; struct urb *iin_urb; u16 iin_wMaxPacketSize; - atomic_t srq_asserted; /* coalesced usb488_caps from usbtmc_dev_capabilities */ __u8 usb488_caps; @@ -104,9 +107,25 @@ struct usbtmc_device_data { struct mutex io_mutex; /* only one i/o function running at a time */ wait_queue_head_t waitq; struct fasync_struct *fasync; + spinlock_t dev_lock; /* lock for file_list */ }; #define to_usbtmc_data(d) container_of(d, struct usbtmc_device_data, kref) +/* + * This structure holds private data for each USBTMC file handle. + */ +struct usbtmc_file_data { + struct usbtmc_device_data *data; + struct list_head file_elem; + + u32 timeout; + u8 srq_byte; + atomic_t srq_asserted; + u8 eom_val; + u8 term_char; + bool term_char_enabled; +}; + /* Forward declarations */ static struct usb_driver usbtmc_driver; @@ -122,7 +141,7 @@ static int usbtmc_open(struct inode *inode, struct file *filp) { struct usb_interface *intf; struct usbtmc_device_data *data; - int retval = 0; + struct usbtmc_file_data *file_data; intf = usb_find_interface(&usbtmc_driver, iminor(inode)); if (!intf) { @@ -130,21 +149,51 @@ static int usbtmc_open(struct inode *inode, struct file *filp) return -ENODEV; } + file_data = kzalloc(sizeof(*file_data), GFP_KERNEL); + if (!file_data) + return -ENOMEM; + data = usb_get_intfdata(intf); /* Protect reference to data from file structure until release */ kref_get(&data->kref); + mutex_lock(&data->io_mutex); + file_data->data = data; + + /* copy default values from device settings */ + file_data->timeout = USBTMC_TIMEOUT; + file_data->term_char = data->TermChar; + file_data->term_char_enabled = data->TermCharEnabled; + file_data->eom_val = 1; + + INIT_LIST_HEAD(&file_data->file_elem); + spin_lock_irq(&data->dev_lock); + list_add_tail(&file_data->file_elem, &data->file_list); + spin_unlock_irq(&data->dev_lock); + mutex_unlock(&data->io_mutex); + /* Store pointer in file structure's private data field */ - filp->private_data = data; + filp->private_data = file_data; - return retval; + return 0; } static int usbtmc_release(struct inode *inode, struct file *file) { - struct usbtmc_device_data *data = file->private_data; + struct usbtmc_file_data *file_data = file->private_data; - kref_put(&data->kref, usbtmc_delete); + /* prevent IO _AND_ usbtmc_interrupt */ + mutex_lock(&file_data->data->io_mutex); + spin_lock_irq(&file_data->data->dev_lock); + + list_del(&file_data->file_elem); + + spin_unlock_irq(&file_data->data->dev_lock); + mutex_unlock(&file_data->data->io_mutex); + + kref_put(&file_data->data->kref, usbtmc_delete); + file_data->data = NULL; + kfree(file_data); return 0; } @@ -369,10 +418,12 @@ exit: return rv; } -static int usbtmc488_ioctl_read_stb(struct usbtmc_device_data *data, +static int usbtmc488_ioctl_read_stb(struct usbtmc_file_data *file_data, void __user *arg) { + struct usbtmc_device_data *data = file_data->data; struct device *dev = &data->intf->dev; + int srq_asserted = 0; u8 *buffer; u8 tag; __u8 stb; @@ -381,15 +432,25 @@ static int usbtmc488_ioctl_read_stb(struct usbtmc_device_data *data, dev_dbg(dev, "Enter ioctl_read_stb iin_ep_present: %d\n", data->iin_ep_present); + spin_lock_irq(&data->dev_lock); + srq_asserted = atomic_xchg(&file_data->srq_asserted, srq_asserted); + if (srq_asserted) { + /* a STB with SRQ is already received */ + stb = file_data->srq_byte; + spin_unlock_irq(&data->dev_lock); + rv = put_user(stb, (__u8 __user *)arg); + dev_dbg(dev, "stb:0x%02x with srq received %d\n", + (unsigned int)stb, rv); + return rv; + } + spin_unlock_irq(&data->dev_lock); + buffer = kmalloc(8, GFP_KERNEL); if (!buffer) return -ENOMEM; atomic_set(&data->iin_data_valid, 0); - /* must issue read_stb before using poll or select */ - atomic_set(&data->srq_asserted, 0); - rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC488_REQUEST_READ_STATUS_BYTE, @@ -412,7 +473,7 @@ static int usbtmc488_ioctl_read_stb(struct usbtmc_device_data *data, rv = wait_event_interruptible_timeout( data->waitq, atomic_read(&data->iin_data_valid) != 0, - USBTMC_TIMEOUT); + file_data->timeout); if (rv < 0) { dev_dbg(dev, "wait interrupted %d\n", rv); goto exit; @@ -420,7 +481,7 @@ static int usbtmc488_ioctl_read_stb(struct usbtmc_device_data *data, if (rv == 0) { dev_dbg(dev, "wait timed out\n"); - rv = -ETIME; + rv = -ETIMEDOUT; goto exit; } @@ -435,9 +496,8 @@ static int usbtmc488_ioctl_read_stb(struct usbtmc_device_data *data, stb = buffer[2]; } - rv = copy_to_user(arg, &stb, sizeof(stb)); - if (rv) - rv = -EFAULT; + rv = put_user(stb, (__u8 __user *)arg); + dev_dbg(dev, "stb:0x%02x received %d\n", (unsigned int)stb, rv); exit: /* bump interrupt bTag */ @@ -506,6 +566,51 @@ static int usbtmc488_ioctl_simple(struct usbtmc_device_data *data, } /* + * Sends a TRIGGER Bulk-OUT command message + * See the USBTMC-USB488 specification, Table 2. + * + * Also updates bTag_last_write. + */ +static int usbtmc488_ioctl_trigger(struct usbtmc_file_data *file_data) +{ + struct usbtmc_device_data *data = file_data->data; + int retval; + u8 *buffer; + int actual; + + buffer = kzalloc(USBTMC_HEADER_SIZE, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + buffer[0] = 128; + buffer[1] = data->bTag; + buffer[2] = ~data->bTag; + + retval = usb_bulk_msg(data->usb_dev, + usb_sndbulkpipe(data->usb_dev, + data->bulk_out), + buffer, USBTMC_HEADER_SIZE, + &actual, file_data->timeout); + + /* Store bTag (in case we need to abort) */ + data->bTag_last_write = data->bTag; + + /* Increment bTag -- and increment again if zero */ + data->bTag++; + if (!data->bTag) + data->bTag++; + + kfree(buffer); + if (retval < 0) { + dev_err(&data->intf->dev, "%s returned %d\n", + __func__, retval); + return retval; + } + + return 0; +} + +/* * Sends a REQUEST_DEV_DEP_MSG_IN message on the Bulk-OUT endpoint. * @transfer_size: number of bytes to request from the device. * @@ -513,8 +618,10 @@ static int usbtmc488_ioctl_simple(struct usbtmc_device_data *data, * * Also updates bTag_last_write. */ -static int send_request_dev_dep_msg_in(struct usbtmc_device_data *data, size_t transfer_size) +static int send_request_dev_dep_msg_in(struct usbtmc_file_data *file_data, + size_t transfer_size) { + struct usbtmc_device_data *data = file_data->data; int retval; u8 *buffer; int actual; @@ -533,9 +640,9 @@ static int send_request_dev_dep_msg_in(struct usbtmc_device_data *data, size_t t buffer[5] = transfer_size >> 8; buffer[6] = transfer_size >> 16; buffer[7] = transfer_size >> 24; - buffer[8] = data->TermCharEnabled * 2; + buffer[8] = file_data->term_char_enabled * 2; /* Use term character? */ - buffer[9] = data->TermChar; + buffer[9] = file_data->term_char; buffer[10] = 0; /* Reserved */ buffer[11] = 0; /* Reserved */ @@ -543,7 +650,8 @@ static int send_request_dev_dep_msg_in(struct usbtmc_device_data *data, size_t t retval = usb_bulk_msg(data->usb_dev, usb_sndbulkpipe(data->usb_dev, data->bulk_out), - buffer, USBTMC_HEADER_SIZE, &actual, USBTMC_TIMEOUT); + buffer, USBTMC_HEADER_SIZE, + &actual, file_data->timeout); /* Store bTag (in case we need to abort) */ data->bTag_last_write = data->bTag; @@ -565,6 +673,7 @@ static int send_request_dev_dep_msg_in(struct usbtmc_device_data *data, size_t t static ssize_t usbtmc_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) { + struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; struct device *dev; u32 n_characters; @@ -576,7 +685,8 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf, size_t this_part; /* Get pointer to private data structure */ - data = filp->private_data; + file_data = filp->private_data; + data = file_data->data; dev = &data->intf->dev; buffer = kmalloc(USBTMC_SIZE_IOBUFFER, GFP_KERNEL); @@ -591,7 +701,7 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf, dev_dbg(dev, "usb_bulk_msg_in: count(%zu)\n", count); - retval = send_request_dev_dep_msg_in(data, count); + retval = send_request_dev_dep_msg_in(file_data, count); if (retval < 0) { if (data->auto_abort) @@ -610,7 +720,7 @@ static ssize_t usbtmc_read(struct file *filp, char __user *buf, usb_rcvbulkpipe(data->usb_dev, data->bulk_in), buffer, USBTMC_SIZE_IOBUFFER, &actual, - USBTMC_TIMEOUT); + file_data->timeout); dev_dbg(dev, "usb_bulk_msg: retval(%u), done(%zu), remaining(%zu), actual(%d)\n", retval, done, remaining, actual); @@ -721,6 +831,7 @@ exit: static ssize_t usbtmc_write(struct file *filp, const char __user *buf, size_t count, loff_t *f_pos) { + struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; u8 *buffer; int retval; @@ -730,7 +841,8 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, int done; int this_part; - data = filp->private_data; + file_data = filp->private_data; + data = file_data->data; buffer = kmalloc(USBTMC_SIZE_IOBUFFER, GFP_KERNEL); if (!buffer) @@ -751,7 +863,7 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, buffer[8] = 0; } else { this_part = remaining; - buffer[8] = 1; + buffer[8] = file_data->eom_val; } /* Setup IO buffer for DEV_DEP_MSG_OUT message */ @@ -781,7 +893,7 @@ static ssize_t usbtmc_write(struct file *filp, const char __user *buf, usb_sndbulkpipe(data->usb_dev, data->bulk_out), buffer, n_bytes, - &actual, USBTMC_TIMEOUT); + &actual, file_data->timeout); if (retval != 0) break; n_bytes -= actual; @@ -1138,12 +1250,91 @@ exit: return rv; } +/* + * Get the usb timeout value + */ +static int usbtmc_ioctl_get_timeout(struct usbtmc_file_data *file_data, + void __user *arg) +{ + u32 timeout; + + timeout = file_data->timeout; + + return put_user(timeout, (__u32 __user *)arg); +} + +/* + * Set the usb timeout value + */ +static int usbtmc_ioctl_set_timeout(struct usbtmc_file_data *file_data, + void __user *arg) +{ + u32 timeout; + + if (get_user(timeout, (__u32 __user *)arg)) + return -EFAULT; + + /* Note that timeout = 0 means + * MAX_SCHEDULE_TIMEOUT in usb_control_msg + */ + if (timeout < USBTMC_MIN_TIMEOUT) + return -EINVAL; + + file_data->timeout = timeout; + + return 0; +} + +/* + * enables/disables sending EOM on write + */ +static int usbtmc_ioctl_eom_enable(struct usbtmc_file_data *file_data, + void __user *arg) +{ + u8 eom_enable; + + if (copy_from_user(&eom_enable, arg, sizeof(eom_enable))) + return -EFAULT; + + if (eom_enable > 1) + return -EINVAL; + + file_data->eom_val = eom_enable; + + return 0; +} + +/* + * Configure termination character for read() + */ +static int usbtmc_ioctl_config_termc(struct usbtmc_file_data *file_data, + void __user *arg) +{ + struct usbtmc_termchar termc; + + if (copy_from_user(&termc, arg, sizeof(termc))) + return -EFAULT; + + if ((termc.term_char_enabled > 1) || + (termc.term_char_enabled && + !(file_data->data->capabilities.device_capabilities & 1))) + return -EINVAL; + + file_data->term_char = termc.term_char; + file_data->term_char_enabled = termc.term_char_enabled; + + return 0; +} + static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { + struct usbtmc_file_data *file_data; struct usbtmc_device_data *data; int retval = -EBADRQC; - data = file->private_data; + file_data = file->private_data; + data = file_data->data; + mutex_lock(&data->io_mutex); if (data->zombie) { retval = -ENODEV; @@ -1175,6 +1366,26 @@ static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) retval = usbtmc_ioctl_abort_bulk_in(data); break; + case USBTMC_IOCTL_GET_TIMEOUT: + retval = usbtmc_ioctl_get_timeout(file_data, + (void __user *)arg); + break; + + case USBTMC_IOCTL_SET_TIMEOUT: + retval = usbtmc_ioctl_set_timeout(file_data, + (void __user *)arg); + break; + + case USBTMC_IOCTL_EOM_ENABLE: + retval = usbtmc_ioctl_eom_enable(file_data, + (void __user *)arg); + break; + + case USBTMC_IOCTL_CONFIG_TERMCHAR: + retval = usbtmc_ioctl_config_termc(file_data, + (void __user *)arg); + break; + case USBTMC488_IOCTL_GET_CAPS: retval = copy_to_user((void __user *)arg, &data->usb488_caps, @@ -1184,7 +1395,8 @@ static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; case USBTMC488_IOCTL_READ_STB: - retval = usbtmc488_ioctl_read_stb(data, (void __user *)arg); + retval = usbtmc488_ioctl_read_stb(file_data, + (void __user *)arg); break; case USBTMC488_IOCTL_REN_CONTROL: @@ -1201,6 +1413,10 @@ static long usbtmc_ioctl(struct file *file, unsigned int cmd, unsigned long arg) retval = usbtmc488_ioctl_simple(data, (void __user *)arg, USBTMC488_REQUEST_LOCAL_LOCKOUT); break; + + case USBTMC488_IOCTL_TRIGGER: + retval = usbtmc488_ioctl_trigger(file_data); + break; } skip_io_on_zombie: @@ -1210,14 +1426,15 @@ skip_io_on_zombie: static int usbtmc_fasync(int fd, struct file *file, int on) { - struct usbtmc_device_data *data = file->private_data; + struct usbtmc_file_data *file_data = file->private_data; - return fasync_helper(fd, file, on, &data->fasync); + return fasync_helper(fd, file, on, &file_data->data->fasync); } static __poll_t usbtmc_poll(struct file *file, poll_table *wait) { - struct usbtmc_device_data *data = file->private_data; + struct usbtmc_file_data *file_data = file->private_data; + struct usbtmc_device_data *data = file_data->data; __poll_t mask; mutex_lock(&data->io_mutex); @@ -1229,7 +1446,7 @@ static __poll_t usbtmc_poll(struct file *file, poll_table *wait) poll_wait(file, &data->waitq, wait); - mask = (atomic_read(&data->srq_asserted)) ? EPOLLIN | EPOLLRDNORM : 0; + mask = (atomic_read(&file_data->srq_asserted)) ? EPOLLPRI : 0; no_poll: mutex_unlock(&data->io_mutex); @@ -1243,6 +1460,9 @@ static const struct file_operations fops = { .open = usbtmc_open, .release = usbtmc_release, .unlocked_ioctl = usbtmc_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = usbtmc_ioctl, +#endif .fasync = usbtmc_fasync, .poll = usbtmc_poll, .llseek = default_llseek, @@ -1276,15 +1496,33 @@ static void usbtmc_interrupt(struct urb *urb) } /* check for SRQ notification */ if (data->iin_buffer[0] == 0x81) { + unsigned long flags; + struct list_head *elem; + if (data->fasync) kill_fasync(&data->fasync, - SIGIO, POLL_IN); + SIGIO, POLL_PRI); - atomic_set(&data->srq_asserted, 1); - wake_up_interruptible(&data->waitq); + spin_lock_irqsave(&data->dev_lock, flags); + list_for_each(elem, &data->file_list) { + struct usbtmc_file_data *file_data; + + file_data = list_entry(elem, + struct usbtmc_file_data, + file_elem); + file_data->srq_byte = data->iin_buffer[1]; + atomic_set(&file_data->srq_asserted, 1); + } + spin_unlock_irqrestore(&data->dev_lock, flags); + + dev_dbg(dev, "srq received bTag %x stb %x\n", + (unsigned int)data->iin_buffer[0], + (unsigned int)data->iin_buffer[1]); + wake_up_interruptible_all(&data->waitq); goto exit; } - dev_warn(dev, "invalid notification: %x\n", data->iin_buffer[0]); + dev_warn(dev, "invalid notification: %x\n", + data->iin_buffer[0]); break; case -EOVERFLOW: dev_err(dev, "overflow with length %d, actual length is %d\n", @@ -1295,6 +1533,7 @@ static void usbtmc_interrupt(struct urb *urb) case -ESHUTDOWN: case -EILSEQ: case -ETIME: + case -EPIPE: /* urb terminated, clean up */ dev_dbg(dev, "urb terminated, status: %d\n", status); return; @@ -1339,7 +1578,9 @@ static int usbtmc_probe(struct usb_interface *intf, mutex_init(&data->io_mutex); init_waitqueue_head(&data->waitq); atomic_set(&data->iin_data_valid, 0); - atomic_set(&data->srq_asserted, 0); + INIT_LIST_HEAD(&data->file_list); + spin_lock_init(&data->dev_lock); + data->zombie = 0; /* Initialize USBTMC bTag and other fields */ @@ -1442,17 +1683,14 @@ err_put: static void usbtmc_disconnect(struct usb_interface *intf) { - struct usbtmc_device_data *data; - - dev_dbg(&intf->dev, "usbtmc_disconnect called\n"); + struct usbtmc_device_data *data = usb_get_intfdata(intf); - data = usb_get_intfdata(intf); usb_deregister_dev(intf, &usbtmc_class); sysfs_remove_group(&intf->dev.kobj, &capability_attr_grp); sysfs_remove_group(&intf->dev.kobj, &data_attr_grp); mutex_lock(&data->io_mutex); data->zombie = 1; - wake_up_all(&data->waitq); + wake_up_interruptible_all(&data->waitq); mutex_unlock(&data->io_mutex); usbtmc_free_int(data); kref_put(&data->kref, usbtmc_delete); diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index 476dcc5f2da3..6ce77b33da61 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -585,9 +585,10 @@ static void async_completed(struct urb *urb) struct siginfo sinfo; struct pid *pid = NULL; const struct cred *cred = NULL; + unsigned long flags; int signr; - spin_lock(&ps->lock); + spin_lock_irqsave(&ps->lock, flags); list_move_tail(&as->asynclist, &ps->async_completed); as->status = urb->status; signr = as->signr; @@ -611,7 +612,7 @@ static void async_completed(struct urb *urb) cancel_bulk_urbs(ps, as->bulk_addr); wake_up(&ps->wait); - spin_unlock(&ps->lock); + spin_unlock_irqrestore(&ps->lock, flags); if (signr) { kill_pid_info_as_cred(sinfo.si_signo, &sinfo, pid, cred); diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 1fb266809966..462ce49f683a 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3660,12 +3660,54 @@ static int hub_suspend(struct usb_interface *intf, pm_message_t msg) return 0; } +/* Report wakeup requests from the ports of a resuming root hub */ +static void report_wakeup_requests(struct usb_hub *hub) +{ + struct usb_device *hdev = hub->hdev; + struct usb_device *udev; + struct usb_hcd *hcd; + unsigned long resuming_ports; + int i; + + if (hdev->parent) + return; /* Not a root hub */ + + hcd = bus_to_hcd(hdev->bus); + if (hcd->driver->get_resuming_ports) { + + /* + * The get_resuming_ports() method returns a bitmap (origin 0) + * of ports which have started wakeup signaling but have not + * yet finished resuming. During system resume we will + * resume all the enabled ports, regardless of any wakeup + * signals, which means the wakeup requests would be lost. + * To prevent this, report them to the PM core here. + */ + resuming_ports = hcd->driver->get_resuming_ports(hcd); + for (i = 0; i < hdev->maxchild; ++i) { + if (test_bit(i, &resuming_ports)) { + udev = hub->ports[i]->child; + if (udev) + pm_wakeup_event(&udev->dev, 0); + } + } + } +} + static int hub_resume(struct usb_interface *intf) { struct usb_hub *hub = usb_get_intfdata(intf); dev_dbg(&intf->dev, "%s\n", __func__); hub_activate(hub, HUB_RESUME); + + /* + * This should be called only for system resume, not runtime resume. + * We can't tell the difference here, so some wakeup requests will be + * reported at the wrong time or more than once. This shouldn't + * matter much, so long as they do get reported. + */ + report_wakeup_requests(hub); return 0; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index 1a15392326fc..228672f2c4a1 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -269,10 +269,11 @@ static void sg_clean(struct usb_sg_request *io) static void sg_complete(struct urb *urb) { + unsigned long flags; struct usb_sg_request *io = urb->context; int status = urb->status; - spin_lock(&io->lock); + spin_lock_irqsave(&io->lock, flags); /* In 2.5 we require hcds' endpoint queues not to progress after fault * reports, until the completion callback (this!) returns. That lets @@ -306,7 +307,7 @@ static void sg_complete(struct urb *urb) * unlink pending urbs so they won't rx/tx bad data. * careful: unlink can sometimes be synchronous... */ - spin_unlock(&io->lock); + spin_unlock_irqrestore(&io->lock, flags); for (i = 0, found = 0; i < io->entries; i++) { if (!io->urbs[i]) continue; @@ -323,7 +324,7 @@ static void sg_complete(struct urb *urb) } else if (urb == io->urbs[i]) found = 1; } - spin_lock(&io->lock); + spin_lock_irqsave(&io->lock, flags); } /* on the last completion, signal usb_sg_wait() */ @@ -332,7 +333,7 @@ static void sg_complete(struct urb *urb) if (!io->count) complete(&io->complete); - spin_unlock(&io->lock); + spin_unlock_irqrestore(&io->lock, flags); } diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 6e64d3a64dbb..1a4ea98cac2a 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -192,6 +192,14 @@ config USB_EHCI_MXC ---help--- Variation of ARC USB block used in some Freescale chips. +config USB_EHCI_HCD_NPCM7XX + tristate "Support for Nuvoton NPCM7XX on-chip EHCI USB controller" + depends on (USB_EHCI_HCD && ARCH_NPCM7XX) || COMPILE_TEST + default y if (USB_EHCI_HCD && ARCH_NPCM7XX) + help + Enables support for the on-chip EHCI controller on + Nuvoton NPCM7XX chips. + config USB_EHCI_HCD_OMAP tristate "EHCI support for OMAP3 and later chips" depends on ARCH_OMAP diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 9b669c9f9a48..e6235269c151 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o +obj-$(CONFIG_USB_EHCI_HCD_NPCM7XX) += ehci-npcm7xx.o obj-$(CONFIG_USB_EHCI_HCD_OMAP) += ehci-omap.o obj-$(CONFIG_USB_EHCI_HCD_ORION) += ehci-orion.o obj-$(CONFIG_USB_EHCI_HCD_SPEAR) += ehci-spear.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 89c47ae5c7d3..8608ac513fb7 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1226,6 +1226,7 @@ static const struct hc_driver ehci_hc_driver = { .bus_resume = ehci_bus_resume, .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, + .get_resuming_ports = ehci_get_resuming_ports, /* * device support diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index d7641cbdee43..ce0eaf7d7c12 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -512,10 +512,18 @@ static int ehci_bus_resume (struct usb_hcd *hcd) return -ESHUTDOWN; } +static unsigned long ehci_get_resuming_ports(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + + return ehci->resuming_ports; +} + #else #define ehci_bus_suspend NULL #define ehci_bus_resume NULL +#define ehci_get_resuming_ports NULL #endif /* CONFIG_PM */ diff --git a/drivers/usb/host/ehci-npcm7xx.c b/drivers/usb/host/ehci-npcm7xx.c new file mode 100644 index 000000000000..adaf8fb4b459 --- /dev/null +++ b/drivers/usb/host/ehci-npcm7xx.c @@ -0,0 +1,212 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Nuvoton NPCM7xx driver for EHCI HCD + * + * Copyright (C) 2018 Nuvoton Technologies, + * Avi Fishman <avi.fishman@nuvoton.com> <avifishman70@gmail.com> + * Tomer Maimon <tomer.maimon@nuvoton.com> <tmaimon77@gmail.com> + * + * Based on various ehci-spear.c driver + */ + + +#include <linux/dma-mapping.h> + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> + +#include "ehci.h" + +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> + +#define DRIVER_DESC "EHCI npcm7xx driver" + +static const char hcd_name[] = "npcm7xx-ehci"; + +#define USB2PHYCTL_OFFSET 0x144 + +#define IPSRST2_OFFSET 0x24 +#define IPSRST3_OFFSET 0x34 + + +static struct hc_driver __read_mostly ehci_npcm7xx_hc_driver; + +#ifdef CONFIG_PM_SLEEP +static int ehci_npcm7xx_drv_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + bool do_wakeup = device_may_wakeup(dev); + + return ehci_suspend(hcd, do_wakeup); +} + +static int ehci_npcm7xx_drv_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + + ehci_resume(hcd, false); + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(ehci_npcm7xx_pm_ops, ehci_npcm7xx_drv_suspend, + ehci_npcm7xx_drv_resume); + +static int npcm7xx_ehci_hcd_drv_probe(struct platform_device *pdev) +{ + struct usb_hcd *hcd; + struct resource *res; + struct regmap *gcr_regmap; + struct regmap *rst_regmap; + const struct hc_driver *driver = &ehci_npcm7xx_hc_driver; + int irq; + int retval; + + dev_dbg(&pdev->dev, "initializing npcm7xx ehci USB Controller\n"); + + gcr_regmap = syscon_regmap_lookup_by_compatible("nuvoton,npcm750-gcr"); + if (IS_ERR(gcr_regmap)) { + dev_err(&pdev->dev, "%s: failed to find nuvoton,npcm750-gcr\n", + __func__); + return PTR_ERR(gcr_regmap); + } + + rst_regmap = syscon_regmap_lookup_by_compatible("nuvoton,npcm750-rst"); + if (IS_ERR(rst_regmap)) { + dev_err(&pdev->dev, "%s: failed to find nuvoton,npcm750-rst\n", + __func__); + return PTR_ERR(rst_regmap); + } + + /********* phy init ******/ + // reset usb host + regmap_update_bits(rst_regmap, IPSRST2_OFFSET, + (0x1 << 26), (0x1 << 26)); + regmap_update_bits(rst_regmap, IPSRST3_OFFSET, + (0x1 << 25), (0x1 << 25)); + regmap_update_bits(gcr_regmap, USB2PHYCTL_OFFSET, + (0x1 << 28), 0); + + udelay(1); + + // enable phy + regmap_update_bits(rst_regmap, IPSRST3_OFFSET, + (0x1 << 25), 0); + + udelay(50); // enable phy + + regmap_update_bits(gcr_regmap, USB2PHYCTL_OFFSET, + (0x1 << 28), (0x1 << 28)); + + // enable host + regmap_update_bits(rst_regmap, IPSRST2_OFFSET, + (0x1 << 26), 0); + + if (usb_disabled()) + return -ENODEV; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + retval = irq; + goto fail; + } + + /* + * Right now device-tree probed devices don't get dma_mask set. + * Since shared usb code relies on it, set it here for now. + * Once we have dma capability bindings this can go away. + */ + retval = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (retval) + goto fail; + + hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); + if (!hcd) { + retval = -ENOMEM; + goto fail; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + retval = PTR_ERR(hcd->regs); + goto err_put_hcd; + } + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + /* registers start at offset 0x0 */ + hcd_to_ehci(hcd)->caps = hcd->regs; + + retval = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (retval) + goto err_put_hcd; + + device_wakeup_enable(hcd->self.controller); + return retval; + +err_put_hcd: + usb_put_hcd(hcd); +fail: + dev_err(&pdev->dev, "init fail, %d\n", retval); + + return retval; +} + +static int npcm7xx_ehci_hcd_drv_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + usb_remove_hcd(hcd); + + usb_put_hcd(hcd); + + return 0; +} + +static const struct of_device_id npcm7xx_ehci_id_table[] = { + { .compatible = "nuvoton,npcm750-ehci" }, + { }, +}; +MODULE_DEVICE_TABLE(of, npcm7xx_ehci_id_table); + +static struct platform_driver npcm7xx_ehci_hcd_driver = { + .probe = npcm7xx_ehci_hcd_drv_probe, + .remove = npcm7xx_ehci_hcd_drv_remove, + .shutdown = usb_hcd_platform_shutdown, + .driver = { + .name = "npcm7xx-ehci", + .bus = &platform_bus_type, + .pm = &ehci_npcm7xx_pm_ops, + .of_match_table = npcm7xx_ehci_id_table, + } +}; + +static int __init ehci_npcm7xx_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ehci_init_driver(&ehci_npcm7xx_hc_driver, NULL); + return platform_driver_register(&npcm7xx_ehci_hcd_driver); +} +module_init(ehci_npcm7xx_init); + +static void __exit ehci_npcm7xx_cleanup(void) +{ + platform_driver_unregister(&npcm7xx_ehci_hcd_driver); +} +module_exit(ehci_npcm7xx_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_ALIAS("platform:npcm7xx-ehci"); +MODULE_AUTHOR("Avi Fishman"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index 1d87295682b8..da7b00a6110b 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1835,7 +1835,6 @@ static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd) unsigned uframe; int urb_index = -1; struct ehci_iso_stream *stream = itd->stream; - struct usb_device *dev; bool retval = false; /* for each uframe with a packet */ @@ -1886,7 +1885,6 @@ static bool itd_complete(struct ehci_hcd *ehci, struct ehci_itd *itd) */ /* give urb back to the driver; completion often (re)submits */ - dev = urb->dev; ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; @@ -2230,7 +2228,6 @@ static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd) u32 t; int urb_index; struct ehci_iso_stream *stream = sitd->stream; - struct usb_device *dev; bool retval = false; urb_index = sitd->index; @@ -2268,7 +2265,6 @@ static bool sitd_complete(struct ehci_hcd *ehci, struct ehci_sitd *sitd) */ /* give urb back to the driver; completion often (re)submits */ - dev = urb->dev; ehci_urb_done(ehci, urb, 0); retval = true; urb = NULL; diff --git a/drivers/usb/host/u132-hcd.c b/drivers/usb/host/u132-hcd.c index 032b8652910a..072bd5d5738e 100644 --- a/drivers/usb/host/u132-hcd.c +++ b/drivers/usb/host/u132-hcd.c @@ -3062,7 +3062,6 @@ static int u132_probe(struct platform_device *pdev) int retval; u32 control; u32 rh_a = -1; - u32 num_ports; msleep(100); if (u132_exiting > 0) @@ -3077,7 +3076,6 @@ static int u132_probe(struct platform_device *pdev) retval = ftdi_read_pcimem(pdev, roothub.a, &rh_a); if (retval) return retval; - num_ports = rh_a & RH_A_NDP; /* refuse to confuse usbcore */ if (pdev->dev.dma_mask) return -EINVAL; diff --git a/drivers/usb/host/whci/pzl.c b/drivers/usb/host/whci/pzl.c index bb84366f7bd3..ef52aeb02fde 100644 --- a/drivers/usb/host/whci/pzl.c +++ b/drivers/usb/host/whci/pzl.c @@ -96,9 +96,7 @@ static enum whc_update pzl_process_qset(struct whc *whc, struct whc_qset *qset) while (qset->ntds) { struct whc_qtd *td; - int t; - t = qset->td_start; td = &qset->qtd[qset->td_start]; status = le32_to_cpu(td->status); diff --git a/drivers/usb/host/xhci-dbgcap.c b/drivers/usb/host/xhci-dbgcap.c index 387f124a8334..86cff5c28eff 100644 --- a/drivers/usb/host/xhci-dbgcap.c +++ b/drivers/usb/host/xhci-dbgcap.c @@ -913,11 +913,9 @@ static ssize_t dbc_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct xhci_dbc *dbc; struct xhci_hcd *xhci; xhci = hcd_to_xhci(dev_get_drvdata(dev)); - dbc = xhci->dbc; if (!strncmp(buf, "enable", 6)) xhci_dbc_start(xhci); diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index a4b95d019f84..7e2a531ba321 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -1684,4 +1684,15 @@ int xhci_bus_resume(struct usb_hcd *hcd) return 0; } +unsigned long xhci_get_resuming_ports(struct usb_hcd *hcd) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct xhci_bus_state *bus_state; + + bus_state = &xhci->bus_state[hcd_index(hcd)]; + + /* USB3 port wakeups are reported via usb_wakeup_notification() */ + return bus_state->resuming_ports; /* USB2 ports only */ +} + #endif /* CONFIG_PM */ diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index c1b22fc64e38..8dc77e34a859 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -105,6 +105,7 @@ static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = { }; static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = { + .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V3, .init_quirk = xhci_rcar_init_quirk, .plat_start = xhci_rcar_start, .resume_quirk = xhci_rcar_resume_quirk, diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index f33ffc2bc4ed..a6e463715779 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -17,9 +17,8 @@ #include "xhci-rcar.h" /* -* - The V3 firmware is for r8a7796 (with good performance) and r8a7795 es2.0 -* or later. -* - The V2 firmware can be used on both r8a7795 (es1.x) and r8a7796. +* - The V3 firmware is for almost all R-Car Gen3 (except r8a7795 ES1.x) +* - The V2 firmware is for r8a7795 ES1.x. * - The V2 firmware is possible to use on R-Car Gen2. However, the V2 causes * performance degradation. So, this driver continues to use the V1 if R-Car * Gen2. @@ -30,6 +29,7 @@ MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V2); MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V3); /*** Register Offset ***/ +#define RCAR_USB3_AXH_STA 0x104 /* AXI Host Control Status */ #define RCAR_USB3_INT_ENA 0x224 /* Interrupt Enable */ #define RCAR_USB3_DL_CTRL 0x250 /* FW Download Control & Status */ #define RCAR_USB3_FW_DATA0 0x258 /* FW Data0 */ @@ -42,6 +42,12 @@ MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V3); #define RCAR_USB3_TX_POL 0xab8 /* USB3.0 TX Polarity */ /*** Register Settings ***/ +/* AXI Host Control Status */ +#define RCAR_USB3_AXH_STA_B3_PLL_ACTIVE 0x00010000 +#define RCAR_USB3_AXH_STA_B2_PLL_ACTIVE 0x00000001 +#define RCAR_USB3_AXH_STA_PLL_ACTIVE_MASK (RCAR_USB3_AXH_STA_B3_PLL_ACTIVE | \ + RCAR_USB3_AXH_STA_B2_PLL_ACTIVE) + /* Interrupt Enable */ #define RCAR_USB3_INT_XHC_ENA 0x00000001 #define RCAR_USB3_INT_PME_ENA 0x00000002 @@ -75,18 +81,6 @@ static const struct soc_device_attribute rcar_quirks_match[] = { .soc_id = "r8a7795", .revision = "ES1.*", .data = (void *)RCAR_XHCI_FIRMWARE_V2, }, - { - .soc_id = "r8a7795", - .data = (void *)RCAR_XHCI_FIRMWARE_V3, - }, - { - .soc_id = "r8a7796", - .data = (void *)RCAR_XHCI_FIRMWARE_V3, - }, - { - .soc_id = "r8a77965", - .data = (void *)RCAR_XHCI_FIRMWARE_V3, - }, { /* sentinel */ }, }; @@ -213,6 +207,22 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd) return retval; } +static bool xhci_rcar_wait_for_pll_active(struct usb_hcd *hcd) +{ + int timeout = 1000; + u32 val, mask = RCAR_USB3_AXH_STA_PLL_ACTIVE_MASK; + + while (timeout > 0) { + val = readl(hcd->regs + RCAR_USB3_AXH_STA); + if ((val & mask) == mask) + return true; + udelay(1); + timeout--; + } + + return false; +} + /* This function needs to initialize a "phy" of usb before */ int xhci_rcar_init_quirk(struct usb_hcd *hcd) { @@ -233,6 +243,9 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd) xhci_rcar_is_gen3(hcd->self.controller)) xhci->quirks |= XHCI_NO_64BIT_SUPPORT; + if (!xhci_rcar_wait_for_pll_active(hcd)) + return -ETIMEDOUT; + return xhci_rcar_download_firmware(hcd); } diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 68e6132aa8b2..61f48b17e57b 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -5121,6 +5121,7 @@ static const struct hc_driver xhci_hc_driver = { .hub_status_data = xhci_hub_status_data, .bus_suspend = xhci_bus_suspend, .bus_resume = xhci_bus_resume, + .get_resuming_ports = xhci_get_resuming_ports, /* * call back when device connected and addressed diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 841e89ffe2e9..6230a578324c 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -2114,9 +2114,11 @@ void xhci_hc_died(struct xhci_hcd *xhci); #ifdef CONFIG_PM int xhci_bus_suspend(struct usb_hcd *hcd); int xhci_bus_resume(struct usb_hcd *hcd); +unsigned long xhci_get_resuming_ports(struct usb_hcd *hcd); #else #define xhci_bus_suspend NULL #define xhci_bus_resume NULL +#define xhci_get_resuming_ports NULL #endif /* CONFIG_PM */ u32 xhci_port_state_to_neutral(u32 state); diff --git a/drivers/usb/isp1760/isp1760-hcd.c b/drivers/usb/isp1760/isp1760-hcd.c index 1045521be293..8142c6b4c4cf 100644 --- a/drivers/usb/isp1760/isp1760-hcd.c +++ b/drivers/usb/isp1760/isp1760-hcd.c @@ -1817,7 +1817,6 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, u32 temp, status; unsigned long flags; int retval = 0; - unsigned selector; /* * FIXME: support SetPortFeatures USB_PORT_FEAT_INDICATOR. @@ -2010,7 +2009,6 @@ static int isp1760_hub_control(struct usb_hcd *hcd, u16 typeReq, } break; case SetPortFeature: - selector = wIndex >> 8; wIndex &= 0xff; if (!wIndex || wIndex > ports) goto error; diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index b3160afe0458..9465fb95d70a 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -155,11 +155,12 @@ static void adu_interrupt_in_callback(struct urb *urb) { struct adu_device *dev = urb->context; int status = urb->status; + unsigned long flags; adu_debug_data(&dev->udev->dev, __func__, urb->actual_length, urb->transfer_buffer); - spin_lock(&dev->buflock); + spin_lock_irqsave(&dev->buflock, flags); if (status != 0) { if ((status != -ENOENT) && (status != -ECONNRESET) && @@ -190,7 +191,7 @@ static void adu_interrupt_in_callback(struct urb *urb) exit: dev->read_urb_finished = 1; - spin_unlock(&dev->buflock); + spin_unlock_irqrestore(&dev->buflock, flags); /* always wake up so we recover from errors */ wake_up_interruptible(&dev->read_wait); } @@ -199,6 +200,7 @@ static void adu_interrupt_out_callback(struct urb *urb) { struct adu_device *dev = urb->context; int status = urb->status; + unsigned long flags; adu_debug_data(&dev->udev->dev, __func__, urb->actual_length, urb->transfer_buffer); @@ -213,10 +215,10 @@ static void adu_interrupt_out_callback(struct urb *urb) return; } - spin_lock(&dev->buflock); + spin_lock_irqsave(&dev->buflock, flags); dev->out_urb_finished = 1; wake_up(&dev->write_wait); - spin_unlock(&dev->buflock); + spin_unlock_irqrestore(&dev->buflock, flags); } static int adu_open(struct inode *inode, struct file *file) diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index b3eb8b989bd4..d746c26a8055 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -89,6 +89,7 @@ static void appledisplay_complete(struct urb *urb) dev_err(dev, "OVERFLOW with data length %d, actual length is %d\n", ACD_URB_BUFFER_LEN, pdata->urb->actual_length); + /* fall through */ case -ECONNRESET: case -ENOENT: case -ESHUTDOWN: diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 8d33187ce2af..c2991b8a65ce 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -81,7 +81,6 @@ struct iowarrior { atomic_t write_busy; /* number of write-urbs submitted */ atomic_t read_idx; atomic_t intr_idx; - spinlock_t intr_idx_lock; /* protects intr_idx */ atomic_t overflow_flag; /* signals an index 'rollover' */ int present; /* this is 1 as long as the device is connected */ int opened; /* this is 1 if the device is currently open */ @@ -166,7 +165,6 @@ static void iowarrior_callback(struct urb *urb) goto exit; } - spin_lock(&dev->intr_idx_lock); intr_idx = atomic_read(&dev->intr_idx); /* aux_idx become previous intr_idx */ aux_idx = (intr_idx == 0) ? (MAX_INTERRUPT_BUFFER - 1) : (intr_idx - 1); @@ -181,7 +179,6 @@ static void iowarrior_callback(struct urb *urb) (dev->read_queue + offset, urb->transfer_buffer, dev->report_size)) { /* equal values on interface 0 will be ignored */ - spin_unlock(&dev->intr_idx_lock); goto exit; } } @@ -202,7 +199,6 @@ static void iowarrior_callback(struct urb *urb) *(dev->read_queue + offset + (dev->report_size)) = dev->serial_number++; atomic_set(&dev->intr_idx, aux_idx); - spin_unlock(&dev->intr_idx_lock); /* tell the blocking read about the new data */ wake_up_interruptible(&dev->read_wait); @@ -762,7 +758,6 @@ static int iowarrior_probe(struct usb_interface *interface, atomic_set(&dev->intr_idx, 0); atomic_set(&dev->read_idx, 0); - spin_lock_init(&dev->intr_idx_lock); atomic_set(&dev->overflow_flag, 0); init_waitqueue_head(&dev->read_wait); atomic_set(&dev->write_busy, 0); diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index c2e255f02a72..006762b72ff5 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -225,6 +225,7 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) size_t *actual_buffer; unsigned int next_ring_head; int status = urb->status; + unsigned long flags; int retval; if (status) { @@ -236,12 +237,12 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) dev_dbg(&dev->intf->dev, "%s: nonzero status received: %d\n", __func__, status); - spin_lock(&dev->rbsl); + spin_lock_irqsave(&dev->rbsl, flags); goto resubmit; /* maybe we can recover */ } } - spin_lock(&dev->rbsl); + spin_lock_irqsave(&dev->rbsl, flags); if (urb->actual_length > 0) { next_ring_head = (dev->ring_head+1) % ring_buffer_size; if (next_ring_head != dev->ring_tail) { @@ -270,7 +271,7 @@ resubmit: dev->buffer_overflow = 1; } } - spin_unlock(&dev->rbsl); + spin_unlock_irqrestore(&dev->rbsl, flags); exit: dev->interrupt_in_done = 1; wake_up_interruptible(&dev->read_wait); diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index bf47bd8bc76f..006cf13b2199 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -722,6 +722,7 @@ static void tower_interrupt_in_callback (struct urb *urb) struct lego_usb_tower *dev = urb->context; int status = urb->status; int retval; + unsigned long flags; lego_usb_tower_debug_data(&dev->udev->dev, __func__, urb->actual_length, urb->transfer_buffer); @@ -740,7 +741,7 @@ static void tower_interrupt_in_callback (struct urb *urb) } if (urb->actual_length > 0) { - spin_lock (&dev->read_buffer_lock); + spin_lock_irqsave(&dev->read_buffer_lock, flags); if (dev->read_buffer_length + urb->actual_length < read_buffer_size) { memcpy (dev->read_buffer + dev->read_buffer_length, dev->interrupt_in_buffer, @@ -753,7 +754,7 @@ static void tower_interrupt_in_callback (struct urb *urb) pr_warn("read_buffer overflow, %d bytes dropped\n", urb->actual_length); } - spin_unlock (&dev->read_buffer_lock); + spin_unlock_irqrestore(&dev->read_buffer_lock, flags); } resubmit: diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c index f92c5df26320..3198d0477cf8 100644 --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -1750,7 +1750,7 @@ static int sisusb_setup_screen(struct sisusb_usb_data *sisusb, static int sisusb_set_default_mode(struct sisusb_usb_data *sisusb, int touchengines) { - int ret = 0, i, j, modex, modey, bpp, du; + int ret = 0, i, j, modex, bpp, du; u8 sr31, cr63, tmp8; static const char attrdata[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, @@ -1773,7 +1773,7 @@ static int sisusb_set_default_mode(struct sisusb_usb_data *sisusb, 0x00 }; - modex = 640; modey = 480; bpp = 2; + modex = 640; bpp = 2; GETIREG(SISSR, 0x31, &sr31); GETIREG(SISCR, 0x63, &cr63); diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 9e1142b8b91b..c7f82310e73e 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -1082,11 +1082,12 @@ static void ctrl_complete(struct urb *urb) struct usb_ctrlrequest *reqp; struct subcase *subcase; int status = urb->status; + unsigned long flags; reqp = (struct usb_ctrlrequest *)urb->setup_packet; subcase = container_of(reqp, struct subcase, setup); - spin_lock(&ctx->lock); + spin_lock_irqsave(&ctx->lock, flags); ctx->count--; ctx->pending--; @@ -1185,7 +1186,7 @@ error: /* signal completion when nothing's queued */ if (ctx->pending == 0) complete(&ctx->complete); - spin_unlock(&ctx->lock); + spin_unlock_irqrestore(&ctx->lock, flags); } static int @@ -1917,8 +1918,9 @@ struct transfer_context { static void complicated_callback(struct urb *urb) { struct transfer_context *ctx = urb->context; + unsigned long flags; - spin_lock(&ctx->lock); + spin_lock_irqsave(&ctx->lock, flags); ctx->count--; ctx->packet_count += urb->number_of_packets; @@ -1958,7 +1960,7 @@ static void complicated_callback(struct urb *urb) complete(&ctx->done); } done: - spin_unlock(&ctx->lock); + spin_unlock_irqrestore(&ctx->lock, flags); } static struct urb *iso_alloc_urb( diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index de9a502491c2..82f220631bd7 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -748,13 +748,11 @@ static void uss720_disconnect(struct usb_interface *intf) { struct parport *pp = usb_get_intfdata(intf); struct parport_uss720_private *priv; - struct usb_device *usbdev; dev_dbg(&intf->dev, "disconnect\n"); usb_set_intfdata(intf, NULL); if (pp) { priv = pp->private_data; - usbdev = priv->usbdev; priv->usbdev = NULL; priv->pp = NULL; dev_dbg(&intf->dev, "parport_remove_port\n"); diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index ad2c082bd0fb..ac2b4fcc265f 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -95,8 +95,8 @@ struct mon_bin_hdr { unsigned short busnum; /* Bus number */ char flag_setup; char flag_data; - s64 ts_sec; /* getnstimeofday64 */ - s32 ts_usec; /* getnstimeofday64 */ + s64 ts_sec; /* ktime_get_real_ts64 */ + s32 ts_usec; /* ktime_get_real_ts64 */ int status; unsigned int len_urb; /* Length of data (submitted or actual) */ unsigned int len_cap; /* Delivered length */ @@ -497,7 +497,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, struct mon_bin_hdr *ep; char data_tag = 0; - getnstimeofday64(&ts); + ktime_get_real_ts64(&ts); spin_lock_irqsave(&rp->b_lock, flags); @@ -637,7 +637,7 @@ static void mon_bin_error(void *data, struct urb *urb, int error) unsigned int offset; struct mon_bin_hdr *ep; - getnstimeofday64(&ts); + ktime_get_real_ts64(&ts); spin_lock_irqsave(&rp->b_lock, flags); diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c index fb871eabcc10..df827ff57b0d 100644 --- a/drivers/usb/musb/musb_dsps.c +++ b/drivers/usb/musb/musb_dsps.c @@ -237,7 +237,7 @@ static int dsps_check_status(struct musb *musb, void *unused) } musb_writeb(musb->mregs, MUSB_DEVCTL, 0); skip_session = 1; - /* fall */ + /* fall through */ case OTG_STATE_A_IDLE: case OTG_STATE_B_IDLE: diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 8000c7c02f79..b59ce9ad14ce 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -378,6 +378,7 @@ static void musb_advance_schedule(struct musb *musb, struct urb *urb, qh = first_qh(head); break; } + /* else: fall through */ case USB_ENDPOINT_XFER_ISOC: case USB_ENDPOINT_XFER_INT: diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 33d059c40616..59cac40aafcc 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -502,6 +502,7 @@ static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, case READ_STATUS_STAGE: case WRITE_STATUS_STAGE: usbhs_dcp_control_transfer_done(pipe); + /* fall through */ default: return ret; } diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 626a29d9aa58..c0777a374a88 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -239,11 +239,14 @@ MODULE_DEVICE_TABLE(usb, id_table); struct cp210x_serial_private { #ifdef CONFIG_GPIOLIB struct gpio_chip gc; - u8 config; - u8 gpio_mode; bool gpio_registered; + u8 gpio_pushpull; + u8 gpio_altfunc; + u8 gpio_input; #endif u8 partnum; + speed_t max_speed; + bool use_actual_rate; }; struct cp210x_port_private { @@ -356,6 +359,7 @@ static struct usb_serial_driver * const serial_drivers[] = { #define CONTROL_WRITE_RTS 0x0200 /* CP210X_VENDOR_SPECIFIC values */ +#define CP210X_READ_2NCONFIG 0x000E #define CP210X_READ_LATCH 0x00C2 #define CP210X_GET_PARTNUM 0x370B #define CP210X_GET_PORTCONFIG 0x370C @@ -369,6 +373,9 @@ static struct usb_serial_driver * const serial_drivers[] = { #define CP210X_PARTNUM_CP2104 0x04 #define CP210X_PARTNUM_CP2105 0x05 #define CP210X_PARTNUM_CP2108 0x08 +#define CP210X_PARTNUM_CP2102N_QFN28 0x20 +#define CP210X_PARTNUM_CP2102N_QFN24 0x21 +#define CP210X_PARTNUM_CP2102N_QFN20 0x22 #define CP210X_PARTNUM_UNKNOWN 0xFF /* CP210X_GET_COMM_STATUS returns these 0x13 bytes */ @@ -462,6 +469,12 @@ struct cp210x_config { #define CP2105_GPIO1_RXLED_MODE BIT(1) #define CP2105_GPIO1_RS485_MODE BIT(2) +/* CP2102N configuration array indices */ +#define CP210X_2NCONFIG_CONFIG_VERSION_IDX 2 +#define CP210X_2NCONFIG_GPIO_MODE_IDX 581 +#define CP210X_2NCONFIG_GPIO_RSTLATCH_IDX 587 +#define CP210X_2NCONFIG_GPIO_CONTROL_IDX 600 + /* CP210X_VENDOR_SPECIFIC, CP210X_WRITE_LATCH call writes these 0x2 bytes. */ struct cp210x_gpio_write { u8 mask; @@ -767,48 +780,6 @@ static int cp210x_get_line_ctl(struct usb_serial_port *port, u16 *ctl) return 0; } -/* - * cp210x_quantise_baudrate - * Quantises the baud rate as per AN205 Table 1 - */ -static unsigned int cp210x_quantise_baudrate(unsigned int baud) -{ - if (baud <= 300) - baud = 300; - else if (baud <= 600) baud = 600; - else if (baud <= 1200) baud = 1200; - else if (baud <= 1800) baud = 1800; - else if (baud <= 2400) baud = 2400; - else if (baud <= 4000) baud = 4000; - else if (baud <= 4803) baud = 4800; - else if (baud <= 7207) baud = 7200; - else if (baud <= 9612) baud = 9600; - else if (baud <= 14428) baud = 14400; - else if (baud <= 16062) baud = 16000; - else if (baud <= 19250) baud = 19200; - else if (baud <= 28912) baud = 28800; - else if (baud <= 38601) baud = 38400; - else if (baud <= 51558) baud = 51200; - else if (baud <= 56280) baud = 56000; - else if (baud <= 58053) baud = 57600; - else if (baud <= 64111) baud = 64000; - else if (baud <= 77608) baud = 76800; - else if (baud <= 117028) baud = 115200; - else if (baud <= 129347) baud = 128000; - else if (baud <= 156868) baud = 153600; - else if (baud <= 237832) baud = 230400; - else if (baud <= 254234) baud = 250000; - else if (baud <= 273066) baud = 256000; - else if (baud <= 491520) baud = 460800; - else if (baud <= 567138) baud = 500000; - else if (baud <= 670254) baud = 576000; - else if (baud < 1000000) - baud = 921600; - else if (baud > 2000000) - baud = 2000000; - return baud; -} - static int cp210x_open(struct tty_struct *tty, struct usb_serial_port *port) { int result; @@ -1028,6 +999,75 @@ static void cp210x_get_termios_port(struct usb_serial_port *port, *cflagp = cflag; } +struct cp210x_rate { + speed_t rate; + speed_t high; +}; + +static const struct cp210x_rate cp210x_an205_table1[] = { + { 300, 300 }, + { 600, 600 }, + { 1200, 1200 }, + { 1800, 1800 }, + { 2400, 2400 }, + { 4000, 4000 }, + { 4800, 4803 }, + { 7200, 7207 }, + { 9600, 9612 }, + { 14400, 14428 }, + { 16000, 16062 }, + { 19200, 19250 }, + { 28800, 28912 }, + { 38400, 38601 }, + { 51200, 51558 }, + { 56000, 56280 }, + { 57600, 58053 }, + { 64000, 64111 }, + { 76800, 77608 }, + { 115200, 117028 }, + { 128000, 129347 }, + { 153600, 156868 }, + { 230400, 237832 }, + { 250000, 254234 }, + { 256000, 273066 }, + { 460800, 491520 }, + { 500000, 567138 }, + { 576000, 670254 }, + { 921600, UINT_MAX } +}; + +/* + * Quantises the baud rate as per AN205 Table 1 + */ +static speed_t cp210x_get_an205_rate(speed_t baud) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(cp210x_an205_table1); ++i) { + if (baud <= cp210x_an205_table1[i].high) + break; + } + + return cp210x_an205_table1[i].rate; +} + +static speed_t cp210x_get_actual_rate(struct usb_serial *serial, speed_t baud) +{ + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + unsigned int prescale = 1; + unsigned int div; + + baud = clamp(baud, 300u, priv->max_speed); + + if (baud <= 365) + prescale = 4; + + div = DIV_ROUND_CLOSEST(48000000, 2 * prescale * baud); + baud = 48000000 / (2 * prescale * div); + + return baud; +} + /* * CP2101 supports the following baud rates: * @@ -1057,16 +1097,24 @@ static void cp210x_get_termios_port(struct usb_serial_port *port, static void cp210x_change_speed(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { + struct usb_serial *serial = port->serial; + struct cp210x_serial_private *priv = usb_get_serial_data(serial); u32 baud; baud = tty->termios.c_ospeed; - /* This maps the requested rate to a rate valid on cp2102 or cp2103, - * or to an arbitrary rate in [1M,2M]. + /* + * This maps the requested rate to the actual rate, a valid rate on + * cp2102 or cp2103, or to an arbitrary rate in [1M, max_speed]. * * NOTE: B0 is not implemented. */ - baud = cp210x_quantise_baudrate(baud); + if (priv->use_actual_rate) + baud = cp210x_get_actual_rate(serial, baud); + else if (baud < 1000000) + baud = cp210x_get_an205_rate(baud); + else if (baud > priv->max_speed) + baud = priv->max_speed; dev_dbg(&port->dev, "%s - setting baud rate to %u\n", __func__, baud); if (cp210x_write_u32_reg(port, CP210X_SET_BAUDRATE, baud)) { @@ -1288,17 +1336,8 @@ static int cp210x_gpio_request(struct gpio_chip *gc, unsigned int offset) struct usb_serial *serial = gpiochip_get_data(gc); struct cp210x_serial_private *priv = usb_get_serial_data(serial); - switch (offset) { - case 0: - if (priv->config & CP2105_GPIO0_TXLED_MODE) - return -ENODEV; - break; - case 1: - if (priv->config & (CP2105_GPIO1_RXLED_MODE | - CP2105_GPIO1_RS485_MODE)) - return -ENODEV; - break; - } + if (priv->gpio_altfunc & BIT(offset)) + return -ENODEV; return 0; } @@ -1306,10 +1345,15 @@ static int cp210x_gpio_request(struct gpio_chip *gc, unsigned int offset) static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio) { struct usb_serial *serial = gpiochip_get_data(gc); + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + u8 req_type = REQTYPE_DEVICE_TO_HOST; int result; u8 buf; - result = cp210x_read_vendor_block(serial, REQTYPE_INTERFACE_TO_HOST, + if (priv->partnum == CP210X_PARTNUM_CP2105) + req_type = REQTYPE_INTERFACE_TO_HOST; + + result = cp210x_read_vendor_block(serial, req_type, CP210X_READ_LATCH, &buf, sizeof(buf)); if (result < 0) return result; @@ -1320,7 +1364,9 @@ static int cp210x_gpio_get(struct gpio_chip *gc, unsigned int gpio) static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value) { struct usb_serial *serial = gpiochip_get_data(gc); + struct cp210x_serial_private *priv = usb_get_serial_data(serial); struct cp210x_gpio_write buf; + int result; if (value == 1) buf.state = BIT(gpio); @@ -1329,25 +1375,68 @@ static void cp210x_gpio_set(struct gpio_chip *gc, unsigned int gpio, int value) buf.mask = BIT(gpio); - cp210x_write_vendor_block(serial, REQTYPE_HOST_TO_INTERFACE, - CP210X_WRITE_LATCH, &buf, sizeof(buf)); + if (priv->partnum == CP210X_PARTNUM_CP2105) { + result = cp210x_write_vendor_block(serial, + REQTYPE_HOST_TO_INTERFACE, + CP210X_WRITE_LATCH, &buf, + sizeof(buf)); + } else { + u16 wIndex = buf.state << 8 | buf.mask; + + result = usb_control_msg(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + CP210X_VENDOR_SPECIFIC, + REQTYPE_HOST_TO_DEVICE, + CP210X_WRITE_LATCH, + wIndex, + NULL, 0, USB_CTRL_SET_TIMEOUT); + } + + if (result < 0) { + dev_err(&serial->interface->dev, "failed to set GPIO value: %d\n", + result); + } } static int cp210x_gpio_direction_get(struct gpio_chip *gc, unsigned int gpio) { - /* Hardware does not support an input mode */ - return 0; + struct usb_serial *serial = gpiochip_get_data(gc); + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + + return priv->gpio_input & BIT(gpio); } static int cp210x_gpio_direction_input(struct gpio_chip *gc, unsigned int gpio) { - /* Hardware does not support an input mode */ - return -ENOTSUPP; + struct usb_serial *serial = gpiochip_get_data(gc); + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + + if (priv->partnum == CP210X_PARTNUM_CP2105) { + /* hardware does not support an input mode */ + return -ENOTSUPP; + } + + /* push-pull pins cannot be changed to be inputs */ + if (priv->gpio_pushpull & BIT(gpio)) + return -EINVAL; + + /* make sure to release pin if it is being driven low */ + cp210x_gpio_set(gc, gpio, 1); + + priv->gpio_input |= BIT(gpio); + + return 0; } static int cp210x_gpio_direction_output(struct gpio_chip *gc, unsigned int gpio, int value) { + struct usb_serial *serial = gpiochip_get_data(gc); + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + + priv->gpio_input &= ~BIT(gpio); + cp210x_gpio_set(gc, gpio, value); + return 0; } @@ -1360,11 +1449,11 @@ static int cp210x_gpio_set_config(struct gpio_chip *gc, unsigned int gpio, /* Succeed only if in correct mode (this can't be set at runtime) */ if ((param == PIN_CONFIG_DRIVE_PUSH_PULL) && - (priv->gpio_mode & BIT(gpio))) + (priv->gpio_pushpull & BIT(gpio))) return 0; if ((param == PIN_CONFIG_DRIVE_OPEN_DRAIN) && - !(priv->gpio_mode & BIT(gpio))) + !(priv->gpio_pushpull & BIT(gpio))) return 0; return -ENOTSUPP; @@ -1377,12 +1466,13 @@ static int cp210x_gpio_set_config(struct gpio_chip *gc, unsigned int gpio, * this driver that provide GPIO do so in a way that does not impact other * signals and are thus expected to have very different initialisation. */ -static int cp2105_shared_gpio_init(struct usb_serial *serial) +static int cp2105_gpioconf_init(struct usb_serial *serial) { struct cp210x_serial_private *priv = usb_get_serial_data(serial); struct cp210x_pin_mode mode; struct cp210x_config config; u8 intf_num = cp210x_interface_num(serial); + u8 iface_config; int result; result = cp210x_read_vendor_block(serial, REQTYPE_DEVICE_TO_HOST, @@ -1399,20 +1489,26 @@ static int cp2105_shared_gpio_init(struct usb_serial *serial) /* 2 banks of GPIO - One for the pins taken from each serial port */ if (intf_num == 0) { - if (mode.eci == CP210X_PIN_MODE_MODEM) + if (mode.eci == CP210X_PIN_MODE_MODEM) { + /* mark all GPIOs of this interface as reserved */ + priv->gpio_altfunc = 0xff; return 0; + } - priv->config = config.eci_cfg; - priv->gpio_mode = (u8)((le16_to_cpu(config.gpio_mode) & + iface_config = config.eci_cfg; + priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & CP210X_ECI_GPIO_MODE_MASK) >> CP210X_ECI_GPIO_MODE_OFFSET); priv->gc.ngpio = 2; } else if (intf_num == 1) { - if (mode.sci == CP210X_PIN_MODE_MODEM) + if (mode.sci == CP210X_PIN_MODE_MODEM) { + /* mark all GPIOs of this interface as reserved */ + priv->gpio_altfunc = 0xff; return 0; + } - priv->config = config.sci_cfg; - priv->gpio_mode = (u8)((le16_to_cpu(config.gpio_mode) & + iface_config = config.sci_cfg; + priv->gpio_pushpull = (u8)((le16_to_cpu(config.gpio_mode) & CP210X_SCI_GPIO_MODE_MASK) >> CP210X_SCI_GPIO_MODE_OFFSET); priv->gc.ngpio = 3; @@ -1420,6 +1516,125 @@ static int cp2105_shared_gpio_init(struct usb_serial *serial) return -ENODEV; } + /* mark all pins which are not in GPIO mode */ + if (iface_config & CP2105_GPIO0_TXLED_MODE) /* GPIO 0 */ + priv->gpio_altfunc |= BIT(0); + if (iface_config & (CP2105_GPIO1_RXLED_MODE | /* GPIO 1 */ + CP2105_GPIO1_RS485_MODE)) + priv->gpio_altfunc |= BIT(1); + + /* driver implementation for CP2105 only supports outputs */ + priv->gpio_input = 0; + + return 0; +} + +static int cp2102n_gpioconf_init(struct usb_serial *serial) +{ + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + const u16 config_size = 0x02a6; + u8 gpio_rst_latch; + u8 config_version; + u8 gpio_pushpull; + u8 *config_buf; + u8 gpio_latch; + u8 gpio_ctrl; + int result; + u8 i; + + /* + * Retrieve device configuration from the device. + * The array received contains all customization settings done at the + * factory/manufacturer. Format of the array is documented at the + * time of writing at: + * https://www.silabs.com/community/interface/knowledge-base.entry.html/2017/03/31/cp2102n_setconfig-xsfa + */ + config_buf = kmalloc(config_size, GFP_KERNEL); + if (!config_buf) + return -ENOMEM; + + result = cp210x_read_vendor_block(serial, + REQTYPE_DEVICE_TO_HOST, + CP210X_READ_2NCONFIG, + config_buf, + config_size); + if (result < 0) { + kfree(config_buf); + return result; + } + + config_version = config_buf[CP210X_2NCONFIG_CONFIG_VERSION_IDX]; + gpio_pushpull = config_buf[CP210X_2NCONFIG_GPIO_MODE_IDX]; + gpio_ctrl = config_buf[CP210X_2NCONFIG_GPIO_CONTROL_IDX]; + gpio_rst_latch = config_buf[CP210X_2NCONFIG_GPIO_RSTLATCH_IDX]; + + kfree(config_buf); + + /* Make sure this is a config format we understand. */ + if (config_version != 0x01) + return -ENOTSUPP; + + /* + * We only support 4 GPIOs even on the QFN28 package, because + * config locations of GPIOs 4-6 determined using reverse + * engineering revealed conflicting offsets with other + * documented functions. So we'll just play it safe for now. + */ + priv->gc.ngpio = 4; + + /* + * Get default pin states after reset. Needed so we can determine + * the direction of an open-drain pin. + */ + gpio_latch = (gpio_rst_latch >> 3) & 0x0f; + + /* 0 indicates open-drain mode, 1 is push-pull */ + priv->gpio_pushpull = (gpio_pushpull >> 3) & 0x0f; + + /* 0 indicates GPIO mode, 1 is alternate function */ + priv->gpio_altfunc = (gpio_ctrl >> 2) & 0x0f; + + /* + * The CP2102N does not strictly has input and output pin modes, + * it only knows open-drain and push-pull modes which is set at + * factory. An open-drain pin can function both as an + * input or an output. We emulate input mode for open-drain pins + * by making sure they are not driven low, and we do not allow + * push-pull pins to be set as an input. + */ + for (i = 0; i < priv->gc.ngpio; ++i) { + /* + * Set direction to "input" iff pin is open-drain and reset + * value is 1. + */ + if (!(priv->gpio_pushpull & BIT(i)) && (gpio_latch & BIT(i))) + priv->gpio_input |= BIT(i); + } + + return 0; +} + +static int cp210x_gpio_init(struct usb_serial *serial) +{ + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + int result; + + switch (priv->partnum) { + case CP210X_PARTNUM_CP2105: + result = cp2105_gpioconf_init(serial); + break; + case CP210X_PARTNUM_CP2102N_QFN28: + case CP210X_PARTNUM_CP2102N_QFN24: + case CP210X_PARTNUM_CP2102N_QFN20: + result = cp2102n_gpioconf_init(serial); + break; + default: + return 0; + } + + if (result < 0) + return result; + priv->gc.label = "cp210x"; priv->gc.request = cp210x_gpio_request; priv->gc.get_direction = cp210x_gpio_direction_get; @@ -1452,7 +1667,7 @@ static void cp210x_gpio_remove(struct usb_serial *serial) #else -static int cp2105_shared_gpio_init(struct usb_serial *serial) +static int cp210x_gpio_init(struct usb_serial *serial) { return 0; } @@ -1497,6 +1712,50 @@ static int cp210x_port_remove(struct usb_serial_port *port) return 0; } +static void cp210x_init_max_speed(struct usb_serial *serial) +{ + struct cp210x_serial_private *priv = usb_get_serial_data(serial); + bool use_actual_rate = false; + speed_t max; + + switch (priv->partnum) { + case CP210X_PARTNUM_CP2101: + max = 921600; + break; + case CP210X_PARTNUM_CP2102: + case CP210X_PARTNUM_CP2103: + max = 1000000; + break; + case CP210X_PARTNUM_CP2104: + use_actual_rate = true; + max = 2000000; + break; + case CP210X_PARTNUM_CP2108: + max = 2000000; + break; + case CP210X_PARTNUM_CP2105: + if (cp210x_interface_num(serial) == 0) { + use_actual_rate = true; + max = 2000000; /* ECI */ + } else { + max = 921600; /* SCI */ + } + break; + case CP210X_PARTNUM_CP2102N_QFN28: + case CP210X_PARTNUM_CP2102N_QFN24: + case CP210X_PARTNUM_CP2102N_QFN20: + use_actual_rate = true; + max = 3000000; + break; + default: + max = 2000000; + break; + } + + priv->max_speed = max; + priv->use_actual_rate = use_actual_rate; +} + static int cp210x_attach(struct usb_serial *serial) { int result; @@ -1517,12 +1776,12 @@ static int cp210x_attach(struct usb_serial *serial) usb_set_serial_data(serial, priv); - if (priv->partnum == CP210X_PARTNUM_CP2105) { - result = cp2105_shared_gpio_init(serial); - if (result < 0) { - dev_err(&serial->interface->dev, - "GPIO initialisation failed, continuing without GPIO support\n"); - } + cp210x_init_max_speed(serial); + + result = cp210x_gpio_init(serial); + if (result < 0) { + dev_err(&serial->interface->dev, "GPIO initialisation failed: %d\n", + result); } return 0; diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index dc67a2eb98d7..ebd76ab07b72 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -255,6 +255,7 @@ static void cyberjack_read_int_callback(struct urb *urb) struct device *dev = &port->dev; unsigned char *data = urb->transfer_buffer; int status = urb->status; + unsigned long flags; int result; /* the urb might have been killed. */ @@ -270,13 +271,13 @@ static void cyberjack_read_int_callback(struct urb *urb) /* This is a announcement of coming bulk_ins. */ unsigned short size = ((unsigned short)data[3]<<8)+data[2]+3; - spin_lock(&priv->lock); + spin_lock_irqsave(&priv->lock, flags); old_rdtodo = priv->rdtodo; if (old_rdtodo > SHRT_MAX - size) { dev_dbg(dev, "To many bulk_in urbs to do.\n"); - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); goto resubmit; } @@ -285,7 +286,7 @@ static void cyberjack_read_int_callback(struct urb *urb) dev_dbg(dev, "%s - rdtodo: %d\n", __func__, priv->rdtodo); - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); if (!old_rdtodo) { result = usb_submit_urb(port->read_urb, GFP_ATOMIC); @@ -309,6 +310,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb) struct cyberjack_private *priv = usb_get_serial_port_data(port); struct device *dev = &port->dev; unsigned char *data = urb->transfer_buffer; + unsigned long flags; short todo; int result; int status = urb->status; @@ -325,7 +327,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb) tty_flip_buffer_push(&port->port); } - spin_lock(&priv->lock); + spin_lock_irqsave(&priv->lock, flags); /* Reduce urbs to do by one. */ priv->rdtodo -= urb->actual_length; @@ -334,7 +336,7 @@ static void cyberjack_read_bulk_callback(struct urb *urb) priv->rdtodo = 0; todo = priv->rdtodo; - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); dev_dbg(dev, "%s - rdtodo: %d\n", __func__, todo); @@ -354,6 +356,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb) struct cyberjack_private *priv = usb_get_serial_port_data(port); struct device *dev = &port->dev; int status = urb->status; + unsigned long flags; set_bit(0, &port->write_urbs_free); if (status) { @@ -362,7 +365,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb) return; } - spin_lock(&priv->lock); + spin_lock_irqsave(&priv->lock, flags); /* only do something if we have more data to send */ if (priv->wrfilled) { @@ -406,7 +409,7 @@ static void cyberjack_write_bulk_callback(struct urb *urb) } exit: - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); usb_serial_port_softint(port); } diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index b0526786fb02..e7f244cf2c07 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -984,6 +984,7 @@ static void digi_write_bulk_callback(struct urb *urb) struct usb_serial *serial; struct digi_port *priv; struct digi_serial *serial_priv; + unsigned long flags; int ret = 0; int status = urb->status; @@ -1004,15 +1005,15 @@ static void digi_write_bulk_callback(struct urb *urb) /* handle oob callback */ if (priv->dp_port_num == serial_priv->ds_oob_port_num) { dev_dbg(&port->dev, "digi_write_bulk_callback: oob callback\n"); - spin_lock(&priv->dp_port_lock); + spin_lock_irqsave(&priv->dp_port_lock, flags); priv->dp_write_urb_in_use = 0; wake_up_interruptible(&port->write_wait); - spin_unlock(&priv->dp_port_lock); + spin_unlock_irqrestore(&priv->dp_port_lock, flags); return; } /* try to send any buffered data on this port */ - spin_lock(&priv->dp_port_lock); + spin_lock_irqsave(&priv->dp_port_lock, flags); priv->dp_write_urb_in_use = 0; if (priv->dp_out_buf_len > 0) { *((unsigned char *)(port->write_urb->transfer_buffer)) @@ -1035,7 +1036,7 @@ static void digi_write_bulk_callback(struct urb *urb) /* lost the race in write_chan(). */ schedule_work(&priv->dp_wakeup_work); - spin_unlock(&priv->dp_port_lock); + spin_unlock_irqrestore(&priv->dp_port_lock, flags); if (ret && ret != -EPERM) dev_err_console(port, "%s: usb_submit_urb failed, ret=%d, port=%d\n", @@ -1381,11 +1382,12 @@ static int digi_read_inb_callback(struct urb *urb) struct usb_serial_port *port = urb->context; struct digi_port *priv = usb_get_serial_port_data(port); unsigned char *buf = urb->transfer_buffer; + unsigned long flags; int opcode; int len; int port_status; unsigned char *data; - int flag, throttled; + int tty_flag, throttled; /* short/multiple packet check */ if (urb->actual_length < 2) { @@ -1407,7 +1409,7 @@ static int digi_read_inb_callback(struct urb *urb) return -1; } - spin_lock(&priv->dp_port_lock); + spin_lock_irqsave(&priv->dp_port_lock, flags); /* check for throttle; if set, do not resubmit read urb */ /* indicate the read chain needs to be restarted on unthrottle */ @@ -1421,7 +1423,7 @@ static int digi_read_inb_callback(struct urb *urb) data = &buf[3]; /* get flag from port_status */ - flag = 0; + tty_flag = 0; /* overrun is special, not associated with a char */ if (port_status & DIGI_OVERRUN_ERROR) @@ -1430,21 +1432,21 @@ static int digi_read_inb_callback(struct urb *urb) /* break takes precedence over parity, */ /* which takes precedence over framing errors */ if (port_status & DIGI_BREAK_ERROR) - flag = TTY_BREAK; + tty_flag = TTY_BREAK; else if (port_status & DIGI_PARITY_ERROR) - flag = TTY_PARITY; + tty_flag = TTY_PARITY; else if (port_status & DIGI_FRAMING_ERROR) - flag = TTY_FRAME; + tty_flag = TTY_FRAME; /* data length is len-1 (one byte of len is port_status) */ --len; if (len > 0) { tty_insert_flip_string_fixed_flag(&port->port, data, - flag, len); + tty_flag, len); tty_flip_buffer_push(&port->port); } } - spin_unlock(&priv->dp_port_lock); + spin_unlock_irqrestore(&priv->dp_port_lock, flags); if (opcode == DIGI_CMD_RECEIVE_DISABLE) dev_dbg(&port->dev, "%s: got RECEIVE_DISABLE\n", __func__); @@ -1474,6 +1476,7 @@ static int digi_read_oob_callback(struct urb *urb) struct digi_port *priv = usb_get_serial_port_data(port); unsigned char *buf = urb->transfer_buffer; int opcode, line, status, val; + unsigned long flags; int i; unsigned int rts; @@ -1506,7 +1509,7 @@ static int digi_read_oob_callback(struct urb *urb) rts = C_CRTSCTS(tty); if (tty && opcode == DIGI_CMD_READ_INPUT_SIGNALS) { - spin_lock(&priv->dp_port_lock); + spin_lock_irqsave(&priv->dp_port_lock, flags); /* convert from digi flags to termiox flags */ if (val & DIGI_READ_INPUT_SIGNALS_CTS) { priv->dp_modem_signals |= TIOCM_CTS; @@ -1530,12 +1533,12 @@ static int digi_read_oob_callback(struct urb *urb) else priv->dp_modem_signals &= ~TIOCM_CD; - spin_unlock(&priv->dp_port_lock); + spin_unlock_irqrestore(&priv->dp_port_lock, flags); } else if (opcode == DIGI_CMD_TRANSMIT_IDLE) { - spin_lock(&priv->dp_port_lock); + spin_lock_irqsave(&priv->dp_port_lock, flags); priv->dp_transmit_idle = 1; wake_up_interruptible(&priv->dp_transmit_idle_wait); - spin_unlock(&priv->dp_port_lock); + spin_unlock_irqrestore(&priv->dp_port_lock, flags); } else if (opcode == DIGI_CMD_IFLUSH_FIFO) { wake_up_interruptible(&priv->dp_flush_wait); } diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index 17283f4b4779..97c69d373ca6 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -648,6 +648,7 @@ static void edge_interrupt_callback(struct urb *urb) struct usb_serial_port *port; unsigned char *data = urb->transfer_buffer; int length = urb->actual_length; + unsigned long flags; int bytes_avail; int position; int txCredits; @@ -679,7 +680,7 @@ static void edge_interrupt_callback(struct urb *urb) if (length > 1) { bytes_avail = data[0] | (data[1] << 8); if (bytes_avail) { - spin_lock(&edge_serial->es_lock); + spin_lock_irqsave(&edge_serial->es_lock, flags); edge_serial->rxBytesAvail += bytes_avail; dev_dbg(dev, "%s - bytes_avail=%d, rxBytesAvail=%d, read_in_progress=%d\n", @@ -702,7 +703,8 @@ static void edge_interrupt_callback(struct urb *urb) edge_serial->read_in_progress = false; } } - spin_unlock(&edge_serial->es_lock); + spin_unlock_irqrestore(&edge_serial->es_lock, + flags); } } /* grab the txcredits for the ports if available */ @@ -715,9 +717,11 @@ static void edge_interrupt_callback(struct urb *urb) port = edge_serial->serial->port[portNumber]; edge_port = usb_get_serial_port_data(port); if (edge_port->open) { - spin_lock(&edge_port->ep_lock); + spin_lock_irqsave(&edge_port->ep_lock, + flags); edge_port->txCredits += txCredits; - spin_unlock(&edge_port->ep_lock); + spin_unlock_irqrestore(&edge_port->ep_lock, + flags); dev_dbg(dev, "%s - txcredits for port%d = %d\n", __func__, portNumber, edge_port->txCredits); @@ -758,6 +762,7 @@ static void edge_bulk_in_callback(struct urb *urb) int retval; __u16 raw_data_length; int status = urb->status; + unsigned long flags; if (status) { dev_dbg(&urb->dev->dev, "%s - nonzero read bulk status received: %d\n", @@ -777,7 +782,7 @@ static void edge_bulk_in_callback(struct urb *urb) usb_serial_debug_data(dev, __func__, raw_data_length, data); - spin_lock(&edge_serial->es_lock); + spin_lock_irqsave(&edge_serial->es_lock, flags); /* decrement our rxBytes available by the number that we just got */ edge_serial->rxBytesAvail -= raw_data_length; @@ -801,7 +806,7 @@ static void edge_bulk_in_callback(struct urb *urb) edge_serial->read_in_progress = false; } - spin_unlock(&edge_serial->es_lock); + spin_unlock_irqrestore(&edge_serial->es_lock, flags); } diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index 0fbadb37c104..6d1d6efa3055 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -1729,6 +1729,7 @@ static void edge_bulk_in_callback(struct urb *urb) struct edgeport_port *edge_port = urb->context; struct device *dev = &edge_port->port->dev; unsigned char *data = urb->transfer_buffer; + unsigned long flags; int retval = 0; int port_number; int status = urb->status; @@ -1780,13 +1781,13 @@ static void edge_bulk_in_callback(struct urb *urb) exit: /* continue read unless stopped */ - spin_lock(&edge_port->ep_lock); + spin_lock_irqsave(&edge_port->ep_lock, flags); if (edge_port->ep_read_urb_state == EDGE_READ_URB_RUNNING) retval = usb_submit_urb(urb, GFP_ATOMIC); else if (edge_port->ep_read_urb_state == EDGE_READ_URB_STOPPING) edge_port->ep_read_urb_state = EDGE_READ_URB_STOPPED; - spin_unlock(&edge_port->ep_lock); + spin_unlock_irqrestore(&edge_port->ep_lock, flags); if (retval) dev_err(dev, "%s - usb_submit_urb failed with result %d\n", __func__, retval); } diff --git a/drivers/usb/serial/ir-usb.c b/drivers/usb/serial/ir-usb.c index 24b06c7e5e2d..7643716b5299 100644 --- a/drivers/usb/serial/ir-usb.c +++ b/drivers/usb/serial/ir-usb.c @@ -132,7 +132,7 @@ irda_usb_find_class_desc(struct usb_serial *serial, unsigned int ifnum) 0, ifnum, desc, sizeof(*desc), 1000); dev_dbg(&serial->dev->dev, "%s - ret=%d\n", __func__, ret); - if (ret < sizeof(*desc)) { + if (ret < (int)sizeof(*desc)) { dev_dbg(&serial->dev->dev, "%s - class descriptor read %s (%d)\n", __func__, (ret < 0) ? "failed" : "too short", ret); diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 2fb71303ec3a..449e89db9cea 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -58,7 +58,6 @@ struct iuu_private { u8 *buf; /* used for initialize speed */ u8 len; int vcc; /* vcc (either 3 or 5 V) */ - u32 baud; u32 boost; u32 clk; }; @@ -963,9 +962,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) struct iuu_private *priv = usb_get_serial_port_data(port); baud = tty->termios.c_ospeed; - tty->termios.c_ispeed = baud; - /* Re-encode speed */ - tty_encode_baud_rate(tty, baud, baud); dev_dbg(dev, "%s - baud %d\n", __func__, baud); usb_clear_halt(serial->dev, port->write_urb->pipe); @@ -991,7 +987,6 @@ static int iuu_open(struct tty_struct *tty, struct usb_serial_port *port) if (boost < 100) boost = 100; priv->boost = boost; - priv->baud = baud; switch (clockmode) { case 2: /* 3.680 Mhz */ priv->clk = IUU_CLK_3680000; diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c index 5046ffd53cde..5ee48b0650c4 100644 --- a/drivers/usb/serial/kl5kusb105.c +++ b/drivers/usb/serial/kl5kusb105.c @@ -67,7 +67,6 @@ static int klsi_105_prepare_write_buffer(struct usb_serial_port *port, */ static const struct usb_device_id id_table[] = { { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) }, - { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) }, { } /* Terminating entry */ }; diff --git a/drivers/usb/serial/kl5kusb105.h b/drivers/usb/serial/kl5kusb105.h index 41c9bf60fbf0..dbe98d85ca8e 100644 --- a/drivers/usb/serial/kl5kusb105.h +++ b/drivers/usb/serial/kl5kusb105.h @@ -7,9 +7,6 @@ #define PALMCONNECT_VID 0x0830 #define PALMCONNECT_PID 0x0080 -#define KLSI_VID 0x05e9 -#define KLSI_KL5KUSB105D_PID 0x00c0 - /* Vendor commands: */ diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index a31ea7e194dd..e9882ba20933 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -190,8 +190,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port) KOBIL_TIMEOUT ); dev_dbg(dev, "%s - Send get_HW_version URB returns: %i\n", __func__, result); - dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0], - transfer_buffer[1], transfer_buffer[2]); + if (result >= 3) { + dev_dbg(dev, "Hardware version: %i.%i.%i\n", transfer_buffer[0], + transfer_buffer[1], transfer_buffer[2]); + } /* get firmware version */ result = usb_control_msg(port->serial->dev, @@ -205,8 +207,10 @@ static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port) KOBIL_TIMEOUT ); dev_dbg(dev, "%s - Send get_FW_version URB returns: %i\n", __func__, result); - dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0], - transfer_buffer[1], transfer_buffer[2]); + if (result >= 3) { + dev_dbg(dev, "Firmware version: %i.%i.%i\n", transfer_buffer[0], + transfer_buffer[1], transfer_buffer[2]); + } if (priv->device_type == KOBIL_ADAPTER_B_PRODUCT_ID || priv->device_type == KOBIL_ADAPTER_K_PRODUCT_ID) { @@ -393,12 +397,20 @@ static int kobil_tiocmget(struct tty_struct *tty) transfer_buffer_length, KOBIL_TIMEOUT); - dev_dbg(&port->dev, "%s - Send get_status_line_state URB returns: %i. Statusline: %02x\n", - __func__, result, transfer_buffer[0]); + dev_dbg(&port->dev, "Send get_status_line_state URB returns: %i\n", + result); + if (result < 1) { + if (result >= 0) + result = -EIO; + goto out_free; + } + + dev_dbg(&port->dev, "Statusline: %02x\n", transfer_buffer[0]); result = 0; if ((transfer_buffer[0] & SUSBCR_GSL_DSR) != 0) result = TIOCM_DSR; +out_free: kfree(transfer_buffer); return result; } diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index bd57630e67e2..27109522fd8b 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -340,14 +340,15 @@ static void async_complete(struct urb *urb) { struct urbtracker *urbtrack = urb->context; int status = urb->status; + unsigned long flags; if (unlikely(status)) dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n", __func__, status); /* remove the urbtracker from the active_urbs list */ - spin_lock(&urbtrack->mos_parport->listlock); + spin_lock_irqsave(&urbtrack->mos_parport->listlock, flags); list_del(&urbtrack->urblist_entry); - spin_unlock(&urbtrack->mos_parport->listlock); + spin_unlock_irqrestore(&urbtrack->mos_parport->listlock, flags); kref_put(&urbtrack->ref_count, destroy_urbtracker); } @@ -1526,8 +1527,6 @@ static void change_port_settings(struct tty_struct *tty, struct usb_serial *serial; int baud; unsigned cflag; - unsigned iflag; - __u8 mask = 0xff; __u8 lData; __u8 lParity; __u8 lStop; @@ -1551,23 +1550,19 @@ static void change_port_settings(struct tty_struct *tty, lParity = 0x00; /* No parity */ cflag = tty->termios.c_cflag; - iflag = tty->termios.c_iflag; /* Change the number of bits */ switch (cflag & CSIZE) { case CS5: lData = UART_LCR_WLEN5; - mask = 0x1f; break; case CS6: lData = UART_LCR_WLEN6; - mask = 0x3f; break; case CS7: lData = UART_LCR_WLEN7; - mask = 0x7f; break; default: case CS8: @@ -1685,11 +1680,8 @@ static void mos7720_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { int status; - struct usb_serial *serial; struct moschip_port *mos7720_port; - serial = port->serial; - mos7720_port = usb_get_serial_port_data(port); if (mos7720_port == NULL) diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index b580b4c7fa48..b42bad85097a 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -805,18 +805,19 @@ static void mos7840_bulk_out_data_callback(struct urb *urb) struct moschip_port *mos7840_port; struct usb_serial_port *port; int status = urb->status; + unsigned long flags; int i; mos7840_port = urb->context; port = mos7840_port->port; - spin_lock(&mos7840_port->pool_lock); + spin_lock_irqsave(&mos7840_port->pool_lock, flags); for (i = 0; i < NUM_URBS; i++) { if (urb == mos7840_port->write_urb_pool[i]) { mos7840_port->busy[i] = 0; break; } } - spin_unlock(&mos7840_port->pool_lock); + spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); if (status) { dev_dbg(&port->dev, "nonzero write bulk status received:%d\n", status); diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index 664e61f16b6a..0215b70c4efc 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -196,6 +196,8 @@ static void option_instat_callback(struct urb *urb); #define DELL_PRODUCT_5800_V2_MINICARD_VZW 0x8196 /* Novatel E362 */ #define DELL_PRODUCT_5804_MINICARD_ATT 0x819b /* Novatel E371 */ +#define DELL_PRODUCT_5821E 0x81d7 + #define KYOCERA_VENDOR_ID 0x0c88 #define KYOCERA_PRODUCT_KPC650 0x17da #define KYOCERA_PRODUCT_KPC680 0x180a @@ -1030,6 +1032,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5800_V2_MINICARD_VZW, 0xff, 0xff, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(DELL_VENDOR_ID, DELL_PRODUCT_5804_MINICARD_ATT, 0xff, 0xff, 0xff) }, + { USB_DEVICE(DELL_VENDOR_ID, DELL_PRODUCT_5821E), + .driver_info = RSVD(0) | RSVD(1) | RSVD(6) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_E100A) }, /* ADU-E100, ADU-310 */ { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_500A) }, { USB_DEVICE(ANYDATA_VENDOR_ID, ANYDATA_PRODUCT_ADU_620UW) }, diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 958e12e1e7c7..b61c2a9b6b11 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -194,7 +194,7 @@ static inline int qt2_getregister(struct usb_device *dev, ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), QT_SET_GET_REGISTER, 0xc0, reg, uart, data, sizeof(*data), QT2_USB_TIMEOUT); - if (ret < sizeof(*data)) { + if (ret < (int)sizeof(*data)) { if (ret >= 0) ret = -EIO; } @@ -621,16 +621,17 @@ static void qt2_write_bulk_callback(struct urb *urb) { struct usb_serial_port *port; struct qt2_port_private *port_priv; + unsigned long flags; port = urb->context; port_priv = usb_get_serial_port_data(port); - spin_lock(&port_priv->urb_lock); + spin_lock_irqsave(&port_priv->urb_lock, flags); port_priv->urb_in_use = false; usb_serial_port_softint(port); - spin_unlock(&port_priv->urb_lock); + spin_unlock_irqrestore(&port_priv->urb_lock, flags); } diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index d189f953c891..a43263a0edd8 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -409,6 +409,7 @@ static void sierra_outdat_callback(struct urb *urb) struct sierra_port_private *portdata = usb_get_serial_port_data(port); struct sierra_intf_private *intfdata; int status = urb->status; + unsigned long flags; intfdata = usb_get_serial_data(port->serial); @@ -419,12 +420,12 @@ static void sierra_outdat_callback(struct urb *urb) dev_dbg(&port->dev, "%s - nonzero write bulk status " "received: %d\n", __func__, status); - spin_lock(&portdata->lock); + spin_lock_irqsave(&portdata->lock, flags); --portdata->outstanding_urbs; - spin_unlock(&portdata->lock); - spin_lock(&intfdata->susp_lock); + spin_unlock_irqrestore(&portdata->lock, flags); + spin_lock_irqsave(&intfdata->susp_lock, flags); --intfdata->in_flight; - spin_unlock(&intfdata->susp_lock); + spin_unlock_irqrestore(&intfdata->susp_lock, flags); usb_serial_port_softint(port); } @@ -770,9 +771,9 @@ static void sierra_close(struct usb_serial_port *port) kfree(urb->transfer_buffer); usb_free_urb(urb); usb_autopm_put_interface_async(serial->interface); - spin_lock(&portdata->lock); + spin_lock_irq(&portdata->lock); portdata->outstanding_urbs--; - spin_unlock(&portdata->lock); + spin_unlock_irq(&portdata->lock); } sierra_stop_rx_urbs(port); diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index 2083c267787b..0900b47b5f57 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -104,7 +104,7 @@ static inline int ssu100_getregister(struct usb_device *dev, ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), QT_SET_GET_REGISTER, 0xc0, reg, uart, data, sizeof(*data), 300); - if (ret < sizeof(*data)) { + if (ret < (int)sizeof(*data)) { if (ret >= 0) ret = -EIO; } diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index cd2f8dc8b58c..6ca24e86f686 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -35,6 +35,7 @@ static void symbol_int_callback(struct urb *urb) struct symbol_private *priv = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; int status = urb->status; + unsigned long flags; int result; int data_length; @@ -73,7 +74,7 @@ static void symbol_int_callback(struct urb *urb) } exit: - spin_lock(&priv->lock); + spin_lock_irqsave(&priv->lock, flags); /* Continue trying to always read if we should */ if (!priv->throttled) { @@ -84,7 +85,7 @@ exit: __func__, result); } else priv->actually_throttled = true; - spin_unlock(&priv->lock); + spin_unlock_irqrestore(&priv->lock, flags); } static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port) diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 6b22857f6e52..3010878f7f8e 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -1215,6 +1215,7 @@ static void ti_bulk_in_callback(struct urb *urb) struct usb_serial_port *port = tport->tp_port; struct device *dev = &urb->dev->dev; int status = urb->status; + unsigned long flags; int retval = 0; switch (status) { @@ -1247,20 +1248,20 @@ static void ti_bulk_in_callback(struct urb *urb) __func__); else ti_recv(port, urb->transfer_buffer, urb->actual_length); - spin_lock(&tport->tp_lock); + spin_lock_irqsave(&tport->tp_lock, flags); port->icount.rx += urb->actual_length; - spin_unlock(&tport->tp_lock); + spin_unlock_irqrestore(&tport->tp_lock, flags); } exit: /* continue to read unless stopping */ - spin_lock(&tport->tp_lock); + spin_lock_irqsave(&tport->tp_lock, flags); if (tport->tp_read_urb_state == TI_READ_URB_RUNNING) retval = usb_submit_urb(urb, GFP_ATOMIC); else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING) tport->tp_read_urb_state = TI_READ_URB_STOPPED; - spin_unlock(&tport->tp_lock); + spin_unlock_irqrestore(&tport->tp_lock, flags); if (retval) dev_err(dev, "%s - resubmit read urb failed, %d\n", __func__, retval); diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 107e64c42e94..912472f26e4f 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -326,6 +326,7 @@ static void usb_wwan_outdat_callback(struct urb *urb) struct usb_serial_port *port; struct usb_wwan_port_private *portdata; struct usb_wwan_intf_private *intfdata; + unsigned long flags; int i; port = urb->context; @@ -334,9 +335,9 @@ static void usb_wwan_outdat_callback(struct urb *urb) usb_serial_port_softint(port); usb_autopm_put_interface_async(port->serial->interface); portdata = usb_get_serial_port_data(port); - spin_lock(&intfdata->susp_lock); + spin_lock_irqsave(&intfdata->susp_lock, flags); intfdata->in_flight--; - spin_unlock(&intfdata->susp_lock); + spin_unlock_irqrestore(&intfdata->susp_lock, flags); for (i = 0; i < N_OUT_URB; ++i) { if (portdata->out_urbs[i] == urb) { diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index 2c8eab11a493..00878c386dd0 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -56,6 +56,22 @@ config TYPEC_TCPM if TYPEC_TCPM +config TYPEC_TCPCI + tristate "Type-C Port Controller Interface driver" + depends on I2C + select REGMAP_I2C + help + Type-C Port Controller driver for TCPCI-compliant controller. + +config TYPEC_RT1711H + tristate "Richtek RT1711H Type-C chip driver" + depends on I2C + select TYPEC_TCPCI + help + Richtek RT1711H Type-C chip driver that works with + Type-C Port Controller Manager to provide USB PD and USB + Type-C functionalities. + source "drivers/usb/typec/fusb302/Kconfig" config TYPEC_WCOVE @@ -88,4 +104,6 @@ config TYPEC_TPS6598X source "drivers/usb/typec/mux/Kconfig" +source "drivers/usb/typec/altmodes/Kconfig" + endif # TYPEC diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile index 1f599a6c30cc..45b0aef428a8 100644 --- a/drivers/usb/typec/Makefile +++ b/drivers/usb/typec/Makefile @@ -1,9 +1,12 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_TYPEC) += typec.o -typec-y := class.o mux.o +typec-y := class.o mux.o bus.o +obj-$(CONFIG_TYPEC) += altmodes/ obj-$(CONFIG_TYPEC_TCPM) += tcpm.o obj-y += fusb302/ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o obj-$(CONFIG_TYPEC_UCSI) += ucsi/ obj-$(CONFIG_TYPEC_TPS6598X) += tps6598x.o obj-$(CONFIG_TYPEC) += mux/ +obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o +obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o diff --git a/drivers/usb/typec/altmodes/Kconfig b/drivers/usb/typec/altmodes/Kconfig new file mode 100644 index 000000000000..efef2a64bc51 --- /dev/null +++ b/drivers/usb/typec/altmodes/Kconfig @@ -0,0 +1,14 @@ + +menu "USB Type-C Alternate Mode drivers" + +config TYPEC_DP_ALTMODE + tristate "DisplayPort Alternate Mode driver" + help + DisplayPort USB Type-C Alternate Mode allows DisplayPort + displays and adapters to be attached to the USB Type-C + connectors on the system. + + To compile this driver as a module, choose M here: the + module will be called typec_displayport. + +endmenu diff --git a/drivers/usb/typec/altmodes/Makefile b/drivers/usb/typec/altmodes/Makefile new file mode 100644 index 000000000000..5caf094ef71a --- /dev/null +++ b/drivers/usb/typec/altmodes/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_TYPEC_DP_ALTMODE) += typec_displayport.o +typec_displayport-y := displayport.o diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c new file mode 100644 index 000000000000..3f06e94771a7 --- /dev/null +++ b/drivers/usb/typec/altmodes/displayport.c @@ -0,0 +1,580 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * USB Typec-C DisplayPort Alternate Mode driver + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> + * + * DisplayPort is trademark of VESA (www.vesa.org) + */ + +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/module.h> +#include <linux/usb/pd_vdo.h> +#include <linux/usb/typec_dp.h> + +#define DP_HEADER(cmd) (VDO(USB_TYPEC_DP_SID, 1, cmd) | \ + VDO_OPOS(USB_TYPEC_DP_MODE)) + +enum { + DP_CONF_USB, + DP_CONF_DFP_D, + DP_CONF_UFP_D, + DP_CONF_DUAL_D, +}; + +/* Helper for setting/getting the pin assignement value to the configuration */ +#define DP_CONF_SET_PIN_ASSIGN(_a_) ((_a_) << 8) +#define DP_CONF_GET_PIN_ASSIGN(_conf_) (((_conf_) & GENMASK(15, 8)) >> 8) + +/* Pin assignments that use USB3.1 Gen2 signaling to carry DP protocol */ +#define DP_PIN_ASSIGN_GEN2_BR_MASK (BIT(DP_PIN_ASSIGN_A) | \ + BIT(DP_PIN_ASSIGN_B)) + +/* Pin assignments that use DP v1.3 signaling to carry DP protocol */ +#define DP_PIN_ASSIGN_DP_BR_MASK (BIT(DP_PIN_ASSIGN_C) | \ + BIT(DP_PIN_ASSIGN_D) | \ + BIT(DP_PIN_ASSIGN_E) | \ + BIT(DP_PIN_ASSIGN_F)) + +/* DP only pin assignments */ +#define DP_PIN_ASSIGN_DP_ONLY_MASK (BIT(DP_PIN_ASSIGN_A) | \ + BIT(DP_PIN_ASSIGN_C) | \ + BIT(DP_PIN_ASSIGN_E)) + +/* Pin assignments where one channel is for USB */ +#define DP_PIN_ASSIGN_MULTI_FUNC_MASK (BIT(DP_PIN_ASSIGN_B) | \ + BIT(DP_PIN_ASSIGN_D) | \ + BIT(DP_PIN_ASSIGN_F)) + +enum dp_state { + DP_STATE_IDLE, + DP_STATE_ENTER, + DP_STATE_UPDATE, + DP_STATE_CONFIGURE, + DP_STATE_EXIT, +}; + +struct dp_altmode { + struct typec_displayport_data data; + + enum dp_state state; + + struct mutex lock; /* device lock */ + struct work_struct work; + struct typec_altmode *alt; + const struct typec_altmode *port; +}; + +static int dp_altmode_notify(struct dp_altmode *dp) +{ + u8 state = get_count_order(DP_CONF_GET_PIN_ASSIGN(dp->data.conf)); + + return typec_altmode_notify(dp->alt, TYPEC_MODAL_STATE(state), + &dp->data); +} + +static int dp_altmode_configure(struct dp_altmode *dp, u8 con) +{ + u32 conf = DP_CONF_SIGNALING_DP; /* Only DP signaling supported */ + u8 pin_assign = 0; + + switch (con) { + case DP_STATUS_CON_DISABLED: + return 0; + case DP_STATUS_CON_DFP_D: + conf |= DP_CONF_UFP_U_AS_DFP_D; + pin_assign = DP_CAP_UFP_D_PIN_ASSIGN(dp->alt->vdo) & + DP_CAP_DFP_D_PIN_ASSIGN(dp->port->vdo); + break; + case DP_STATUS_CON_UFP_D: + case DP_STATUS_CON_BOTH: /* NOTE: First acting as DP source */ + conf |= DP_CONF_UFP_U_AS_UFP_D; + pin_assign = DP_CAP_DFP_D_PIN_ASSIGN(dp->alt->vdo) & + DP_CAP_UFP_D_PIN_ASSIGN(dp->port->vdo); + break; + default: + break; + } + + /* Determining the initial pin assignment. */ + if (!DP_CONF_GET_PIN_ASSIGN(dp->data.conf)) { + /* Is USB together with DP preferred */ + if (dp->data.status & DP_STATUS_PREFER_MULTI_FUNC && + pin_assign & DP_PIN_ASSIGN_MULTI_FUNC_MASK) + pin_assign &= DP_PIN_ASSIGN_MULTI_FUNC_MASK; + else + pin_assign &= DP_PIN_ASSIGN_DP_ONLY_MASK; + + if (!pin_assign) + return -EINVAL; + + conf |= DP_CONF_SET_PIN_ASSIGN(pin_assign); + } + + dp->data.conf = conf; + + return 0; +} + +static int dp_altmode_status_update(struct dp_altmode *dp) +{ + bool configured = !!DP_CONF_GET_PIN_ASSIGN(dp->data.conf); + u8 con = DP_STATUS_CONNECTION(dp->data.status); + int ret = 0; + + if (configured && (dp->data.status & DP_STATUS_SWITCH_TO_USB)) { + dp->data.conf = 0; + dp->state = DP_STATE_CONFIGURE; + } else if (dp->data.status & DP_STATUS_EXIT_DP_MODE) { + dp->state = DP_STATE_EXIT; + } else if (!(con & DP_CONF_CURRENTLY(dp->data.conf))) { + ret = dp_altmode_configure(dp, con); + if (!ret) + dp->state = DP_STATE_CONFIGURE; + } + + return ret; +} + +static int dp_altmode_configured(struct dp_altmode *dp) +{ + int ret; + + sysfs_notify(&dp->alt->dev.kobj, "displayport", "configuration"); + + if (!dp->data.conf) + return typec_altmode_notify(dp->alt, TYPEC_STATE_USB, + &dp->data); + + ret = dp_altmode_notify(dp); + if (ret) + return ret; + + sysfs_notify(&dp->alt->dev.kobj, "displayport", "pin_assignment"); + + return 0; +} + +static int dp_altmode_configure_vdm(struct dp_altmode *dp, u32 conf) +{ + u32 header = DP_HEADER(DP_CMD_CONFIGURE); + int ret; + + ret = typec_altmode_notify(dp->alt, TYPEC_STATE_SAFE, &dp->data); + if (ret) { + dev_err(&dp->alt->dev, + "unable to put to connector to safe mode\n"); + return ret; + } + + ret = typec_altmode_vdm(dp->alt, header, &conf, 2); + if (ret) { + if (DP_CONF_GET_PIN_ASSIGN(dp->data.conf)) + dp_altmode_notify(dp); + else + typec_altmode_notify(dp->alt, TYPEC_STATE_USB, + &dp->data); + } + + return ret; +} + +static void dp_altmode_work(struct work_struct *work) +{ + struct dp_altmode *dp = container_of(work, struct dp_altmode, work); + u32 header; + u32 vdo; + int ret; + + mutex_lock(&dp->lock); + + switch (dp->state) { + case DP_STATE_ENTER: + ret = typec_altmode_enter(dp->alt); + if (ret) + dev_err(&dp->alt->dev, "failed to enter mode\n"); + break; + case DP_STATE_UPDATE: + header = DP_HEADER(DP_CMD_STATUS_UPDATE); + vdo = 1; + ret = typec_altmode_vdm(dp->alt, header, &vdo, 2); + if (ret) + dev_err(&dp->alt->dev, + "unable to send Status Update command (%d)\n", + ret); + break; + case DP_STATE_CONFIGURE: + ret = dp_altmode_configure_vdm(dp, dp->data.conf); + if (ret) + dev_err(&dp->alt->dev, + "unable to send Configure command (%d)\n", ret); + break; + case DP_STATE_EXIT: + if (typec_altmode_exit(dp->alt)) + dev_err(&dp->alt->dev, "Exit Mode Failed!\n"); + break; + default: + break; + } + + dp->state = DP_STATE_IDLE; + + mutex_unlock(&dp->lock); +} + +static void dp_altmode_attention(struct typec_altmode *alt, const u32 vdo) +{ + struct dp_altmode *dp = typec_altmode_get_drvdata(alt); + u8 old_state; + + mutex_lock(&dp->lock); + + old_state = dp->state; + dp->data.status = vdo; + + if (old_state != DP_STATE_IDLE) + dev_warn(&alt->dev, "ATTENTION while processing state %d\n", + old_state); + + if (dp_altmode_status_update(dp)) + dev_warn(&alt->dev, "%s: status update failed\n", __func__); + + if (dp_altmode_notify(dp)) + dev_err(&alt->dev, "%s: notification failed\n", __func__); + + if (old_state == DP_STATE_IDLE && dp->state != DP_STATE_IDLE) + schedule_work(&dp->work); + + mutex_unlock(&dp->lock); +} + +static int dp_altmode_vdm(struct typec_altmode *alt, + const u32 hdr, const u32 *vdo, int count) +{ + struct dp_altmode *dp = typec_altmode_get_drvdata(alt); + int cmd_type = PD_VDO_CMDT(hdr); + int cmd = PD_VDO_CMD(hdr); + int ret = 0; + + mutex_lock(&dp->lock); + + if (dp->state != DP_STATE_IDLE) { + ret = -EBUSY; + goto err_unlock; + } + + switch (cmd_type) { + case CMDT_RSP_ACK: + switch (cmd) { + case CMD_ENTER_MODE: + dp->state = DP_STATE_UPDATE; + break; + case CMD_EXIT_MODE: + dp->data.status = 0; + dp->data.conf = 0; + break; + case DP_CMD_STATUS_UPDATE: + dp->data.status = *vdo; + ret = dp_altmode_status_update(dp); + break; + case DP_CMD_CONFIGURE: + ret = dp_altmode_configured(dp); + break; + default: + break; + } + break; + case CMDT_RSP_NAK: + switch (cmd) { + case DP_CMD_CONFIGURE: + dp->data.conf = 0; + ret = dp_altmode_configured(dp); + break; + default: + break; + } + break; + default: + break; + } + + if (dp->state != DP_STATE_IDLE) + schedule_work(&dp->work); + +err_unlock: + mutex_unlock(&dp->lock); + return ret; +} + +static int dp_altmode_activate(struct typec_altmode *alt, int activate) +{ + return activate ? typec_altmode_enter(alt) : typec_altmode_exit(alt); +} + +static const struct typec_altmode_ops dp_altmode_ops = { + .attention = dp_altmode_attention, + .vdm = dp_altmode_vdm, + .activate = dp_altmode_activate, +}; + +static const char * const configurations[] = { + [DP_CONF_USB] = "USB", + [DP_CONF_DFP_D] = "source", + [DP_CONF_UFP_D] = "sink", +}; + +static ssize_t +configuration_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct dp_altmode *dp = dev_get_drvdata(dev); + u32 conf; + u32 cap; + int con; + int ret = 0; + + con = sysfs_match_string(configurations, buf); + if (con < 0) + return con; + + mutex_lock(&dp->lock); + + if (dp->state != DP_STATE_IDLE) { + ret = -EBUSY; + goto err_unlock; + } + + cap = DP_CAP_CAPABILITY(dp->alt->vdo); + + if ((con == DP_CONF_DFP_D && !(cap & DP_CAP_DFP_D)) || + (con == DP_CONF_UFP_D && !(cap & DP_CAP_UFP_D))) { + ret = -EINVAL; + goto err_unlock; + } + + conf = dp->data.conf & ~DP_CONF_DUAL_D; + conf |= con; + + if (dp->alt->active) { + ret = dp_altmode_configure_vdm(dp, conf); + if (ret) + goto err_unlock; + } + + dp->data.conf = conf; + +err_unlock: + mutex_unlock(&dp->lock); + + return ret ? ret : size; +} + +static ssize_t configuration_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dp_altmode *dp = dev_get_drvdata(dev); + int len; + u8 cap; + u8 cur; + int i; + + mutex_lock(&dp->lock); + + cap = DP_CAP_CAPABILITY(dp->alt->vdo); + cur = DP_CONF_CURRENTLY(dp->data.conf); + + len = sprintf(buf, "%s ", cur ? "USB" : "[USB]"); + + for (i = 1; i < ARRAY_SIZE(configurations); i++) { + if (i == cur) + len += sprintf(buf + len, "[%s] ", configurations[i]); + else if ((i == DP_CONF_DFP_D && cap & DP_CAP_DFP_D) || + (i == DP_CONF_UFP_D && cap & DP_CAP_UFP_D)) + len += sprintf(buf + len, "%s ", configurations[i]); + } + + mutex_unlock(&dp->lock); + + buf[len - 1] = '\n'; + return len; +} +static DEVICE_ATTR_RW(configuration); + +static const char * const pin_assignments[] = { + [DP_PIN_ASSIGN_A] = "A", + [DP_PIN_ASSIGN_B] = "B", + [DP_PIN_ASSIGN_C] = "C", + [DP_PIN_ASSIGN_D] = "D", + [DP_PIN_ASSIGN_E] = "E", + [DP_PIN_ASSIGN_F] = "F", +}; + +static ssize_t +pin_assignment_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct dp_altmode *dp = dev_get_drvdata(dev); + u8 assignments; + u32 conf; + int ret; + + ret = sysfs_match_string(pin_assignments, buf); + if (ret < 0) + return ret; + + conf = DP_CONF_SET_PIN_ASSIGN(BIT(ret)); + ret = 0; + + mutex_lock(&dp->lock); + + if (conf & dp->data.conf) + goto out_unlock; + + if (dp->state != DP_STATE_IDLE) { + ret = -EBUSY; + goto out_unlock; + } + + if (DP_CONF_CURRENTLY(dp->data.conf) == DP_CONF_DFP_D) + assignments = DP_CAP_UFP_D_PIN_ASSIGN(dp->alt->vdo); + else + assignments = DP_CAP_DFP_D_PIN_ASSIGN(dp->alt->vdo); + + if (!(DP_CONF_GET_PIN_ASSIGN(conf) & assignments)) { + ret = -EINVAL; + goto out_unlock; + } + + conf |= dp->data.conf & ~DP_CONF_PIN_ASSIGNEMENT_MASK; + + /* Only send Configure command if a configuration has been set */ + if (dp->alt->active && DP_CONF_CURRENTLY(dp->data.conf)) { + ret = dp_altmode_configure_vdm(dp, conf); + if (ret) + goto out_unlock; + } + + dp->data.conf = conf; + +out_unlock: + mutex_unlock(&dp->lock); + + return ret ? ret : size; +} + +static ssize_t pin_assignment_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dp_altmode *dp = dev_get_drvdata(dev); + u8 assignments; + int len = 0; + u8 cur; + int i; + + mutex_lock(&dp->lock); + + cur = get_count_order(DP_CONF_GET_PIN_ASSIGN(dp->data.conf)); + + if (DP_CONF_CURRENTLY(dp->data.conf) == DP_CONF_DFP_D) + assignments = DP_CAP_UFP_D_PIN_ASSIGN(dp->alt->vdo); + else + assignments = DP_CAP_DFP_D_PIN_ASSIGN(dp->alt->vdo); + + for (i = 0; assignments; assignments >>= 1, i++) { + if (assignments & 1) { + if (i == cur) + len += sprintf(buf + len, "[%s] ", + pin_assignments[i]); + else + len += sprintf(buf + len, "%s ", + pin_assignments[i]); + } + } + + mutex_unlock(&dp->lock); + + buf[len - 1] = '\n'; + return len; +} +static DEVICE_ATTR_RW(pin_assignment); + +static struct attribute *dp_altmode_attrs[] = { + &dev_attr_configuration.attr, + &dev_attr_pin_assignment.attr, + NULL +}; + +static const struct attribute_group dp_altmode_group = { + .name = "displayport", + .attrs = dp_altmode_attrs, +}; + +static int dp_altmode_probe(struct typec_altmode *alt) +{ + const struct typec_altmode *port = typec_altmode_get_partner(alt); + struct dp_altmode *dp; + int ret; + + /* FIXME: Port can only be DFP_U. */ + + /* Make sure we have compatiple pin configurations */ + if (!(DP_CAP_DFP_D_PIN_ASSIGN(port->vdo) & + DP_CAP_UFP_D_PIN_ASSIGN(alt->vdo)) && + !(DP_CAP_UFP_D_PIN_ASSIGN(port->vdo) & + DP_CAP_DFP_D_PIN_ASSIGN(alt->vdo))) + return -ENODEV; + + ret = sysfs_create_group(&alt->dev.kobj, &dp_altmode_group); + if (ret) + return ret; + + dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL); + if (!dp) + return -ENOMEM; + + INIT_WORK(&dp->work, dp_altmode_work); + mutex_init(&dp->lock); + dp->port = port; + dp->alt = alt; + + alt->desc = "DisplayPort"; + alt->ops = &dp_altmode_ops; + + typec_altmode_set_drvdata(alt, dp); + + dp->state = DP_STATE_ENTER; + schedule_work(&dp->work); + + return 0; +} + +static void dp_altmode_remove(struct typec_altmode *alt) +{ + struct dp_altmode *dp = typec_altmode_get_drvdata(alt); + + sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group); + cancel_work_sync(&dp->work); +} + +static const struct typec_device_id dp_typec_id[] = { + { USB_TYPEC_DP_SID, USB_TYPEC_DP_MODE }, + { }, +}; +MODULE_DEVICE_TABLE(typec, dp_typec_id); + +static struct typec_altmode_driver dp_altmode_driver = { + .id_table = dp_typec_id, + .probe = dp_altmode_probe, + .remove = dp_altmode_remove, + .driver = { + .name = "typec_displayport", + .owner = THIS_MODULE, + }, +}; +module_typec_altmode_driver(dp_altmode_driver); + +MODULE_AUTHOR("Heikki Krogerus <heikki.krogerus@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("DisplayPort Alternate Mode"); diff --git a/drivers/usb/typec/bus.c b/drivers/usb/typec/bus.c new file mode 100644 index 000000000000..95a2b10127db --- /dev/null +++ b/drivers/usb/typec/bus.c @@ -0,0 +1,402 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * Bus for USB Type-C Alternate Modes + * + * Copyright (C) 2018 Intel Corporation + * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> + */ + +#include <linux/usb/pd_vdo.h> + +#include "bus.h" + +static inline int typec_altmode_set_mux(struct altmode *alt, u8 state) +{ + return alt->mux ? alt->mux->set(alt->mux, state) : 0; +} + +static int typec_altmode_set_state(struct typec_altmode *adev, int state) +{ + bool is_port = is_typec_port(adev->dev.parent); + struct altmode *port_altmode; + int ret; + + port_altmode = is_port ? to_altmode(adev) : to_altmode(adev)->partner; + + ret = typec_altmode_set_mux(port_altmode, state); + if (ret) + return ret; + + blocking_notifier_call_chain(&port_altmode->nh, state, NULL); + + return 0; +} + +/* -------------------------------------------------------------------------- */ +/* Common API */ + +/** + * typec_altmode_notify - Communication between the OS and alternate mode driver + * @adev: Handle to the alternate mode + * @conf: Alternate mode specific configuration value + * @data: Alternate mode specific data + * + * The primary purpose for this function is to allow the alternate mode drivers + * to tell which pin configuration has been negotiated with the partner. That + * information will then be used for example to configure the muxes. + * Communication to the other direction is also possible, and low level device + * drivers can also send notifications to the alternate mode drivers. The actual + * communication will be specific for every SVID. + */ +int typec_altmode_notify(struct typec_altmode *adev, + unsigned long conf, void *data) +{ + bool is_port; + struct altmode *altmode; + struct altmode *partner; + int ret; + + if (!adev) + return 0; + + altmode = to_altmode(adev); + + if (!altmode->partner) + return -ENODEV; + + is_port = is_typec_port(adev->dev.parent); + partner = altmode->partner; + + ret = typec_altmode_set_mux(is_port ? altmode : partner, (u8)conf); + if (ret) + return ret; + + blocking_notifier_call_chain(is_port ? &altmode->nh : &partner->nh, + conf, data); + + if (partner->adev.ops && partner->adev.ops->notify) + return partner->adev.ops->notify(&partner->adev, conf, data); + + return 0; +} +EXPORT_SYMBOL_GPL(typec_altmode_notify); + +/** + * typec_altmode_enter - Enter Mode + * @adev: The alternate mode + * + * The alternate mode drivers use this function to enter mode. The port drivers + * use this to inform the alternate mode drivers that the partner has initiated + * Enter Mode command. + */ +int typec_altmode_enter(struct typec_altmode *adev) +{ + struct altmode *partner = to_altmode(adev)->partner; + struct typec_altmode *pdev = &partner->adev; + int ret; + + if (!adev || adev->active) + return 0; + + if (!pdev->ops || !pdev->ops->enter) + return -EOPNOTSUPP; + + /* Moving to USB Safe State */ + ret = typec_altmode_set_state(adev, TYPEC_STATE_SAFE); + if (ret) + return ret; + + /* Enter Mode */ + return pdev->ops->enter(pdev); +} +EXPORT_SYMBOL_GPL(typec_altmode_enter); + +/** + * typec_altmode_exit - Exit Mode + * @adev: The alternate mode + * + * The partner of @adev has initiated Exit Mode command. + */ +int typec_altmode_exit(struct typec_altmode *adev) +{ + struct altmode *partner = to_altmode(adev)->partner; + struct typec_altmode *pdev = &partner->adev; + int ret; + + if (!adev || !adev->active) + return 0; + + if (!pdev->ops || !pdev->ops->enter) + return -EOPNOTSUPP; + + /* Moving to USB Safe State */ + ret = typec_altmode_set_state(adev, TYPEC_STATE_SAFE); + if (ret) + return ret; + + /* Exit Mode command */ + return pdev->ops->exit(pdev); +} +EXPORT_SYMBOL_GPL(typec_altmode_exit); + +/** + * typec_altmode_attention - Attention command + * @adev: The alternate mode + * @vdo: VDO for the Attention command + * + * Notifies the partner of @adev about Attention command. + */ +void typec_altmode_attention(struct typec_altmode *adev, u32 vdo) +{ + struct typec_altmode *pdev = &to_altmode(adev)->partner->adev; + + if (pdev->ops && pdev->ops->attention) + pdev->ops->attention(pdev, vdo); +} +EXPORT_SYMBOL_GPL(typec_altmode_attention); + +/** + * typec_altmode_vdm - Send Vendor Defined Messages (VDM) to the partner + * @adev: Alternate mode handle + * @header: VDM Header + * @vdo: Array of Vendor Defined Data Objects + * @count: Number of Data Objects + * + * The alternate mode drivers use this function for SVID specific communication + * with the partner. The port drivers use it to deliver the Structured VDMs + * received from the partners to the alternate mode drivers. + */ +int typec_altmode_vdm(struct typec_altmode *adev, + const u32 header, const u32 *vdo, int count) +{ + struct typec_altmode *pdev; + struct altmode *altmode; + + if (!adev) + return 0; + + altmode = to_altmode(adev); + + if (!altmode->partner) + return -ENODEV; + + pdev = &altmode->partner->adev; + + if (!pdev->ops || !pdev->ops->vdm) + return -EOPNOTSUPP; + + return pdev->ops->vdm(pdev, header, vdo, count); +} +EXPORT_SYMBOL_GPL(typec_altmode_vdm); + +const struct typec_altmode * +typec_altmode_get_partner(struct typec_altmode *adev) +{ + return &to_altmode(adev)->partner->adev; +} +EXPORT_SYMBOL_GPL(typec_altmode_get_partner); + +/* -------------------------------------------------------------------------- */ +/* API for the alternate mode drivers */ + +/** + * typec_altmode_get_plug - Find cable plug alternate mode + * @adev: Handle to partner alternate mode + * @index: Cable plug index + * + * Increment reference count for cable plug alternate mode device. Returns + * handle to the cable plug alternate mode, or NULL if none is found. + */ +struct typec_altmode *typec_altmode_get_plug(struct typec_altmode *adev, + enum typec_plug_index index) +{ + struct altmode *port = to_altmode(adev)->partner; + + if (port->plug[index]) { + get_device(&port->plug[index]->adev.dev); + return &port->plug[index]->adev; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(typec_altmode_get_plug); + +/** + * typec_altmode_put_plug - Decrement cable plug alternate mode reference count + * @plug: Handle to the cable plug alternate mode + */ +void typec_altmode_put_plug(struct typec_altmode *plug) +{ + if (plug) + put_device(&plug->dev); +} +EXPORT_SYMBOL_GPL(typec_altmode_put_plug); + +int __typec_altmode_register_driver(struct typec_altmode_driver *drv, + struct module *module) +{ + if (!drv->probe) + return -EINVAL; + + drv->driver.owner = module; + drv->driver.bus = &typec_bus; + + return driver_register(&drv->driver); +} +EXPORT_SYMBOL_GPL(__typec_altmode_register_driver); + +void typec_altmode_unregister_driver(struct typec_altmode_driver *drv) +{ + driver_unregister(&drv->driver); +} +EXPORT_SYMBOL_GPL(typec_altmode_unregister_driver); + +/* -------------------------------------------------------------------------- */ +/* API for the port drivers */ + +/** + * typec_match_altmode - Match SVID to an array of alternate modes + * @altmodes: Array of alternate modes + * @n: Number of elements in the array, or -1 for NULL termiated arrays + * @svid: Standard or Vendor ID to match with + * + * Return pointer to an alternate mode with SVID mathing @svid, or NULL when no + * match is found. + */ +struct typec_altmode *typec_match_altmode(struct typec_altmode **altmodes, + size_t n, u16 svid, u8 mode) +{ + int i; + + for (i = 0; i < n; i++) { + if (!altmodes[i]) + break; + if (altmodes[i]->svid == svid && altmodes[i]->mode == mode) + return altmodes[i]; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(typec_match_altmode); + +/* -------------------------------------------------------------------------- */ + +static ssize_t +description_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct typec_altmode *alt = to_typec_altmode(dev); + + return sprintf(buf, "%s\n", alt->desc ? alt->desc : ""); +} +static DEVICE_ATTR_RO(description); + +static struct attribute *typec_attrs[] = { + &dev_attr_description.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec); + +static int typec_match(struct device *dev, struct device_driver *driver) +{ + struct typec_altmode_driver *drv = to_altmode_driver(driver); + struct typec_altmode *altmode = to_typec_altmode(dev); + const struct typec_device_id *id; + + for (id = drv->id_table; id->svid; id++) + if (id->svid == altmode->svid && + (id->mode == TYPEC_ANY_MODE || id->mode == altmode->mode)) + return 1; + return 0; +} + +static int typec_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct typec_altmode *altmode = to_typec_altmode(dev); + + if (add_uevent_var(env, "SVID=%04X", altmode->svid)) + return -ENOMEM; + + if (add_uevent_var(env, "MODE=%u", altmode->mode)) + return -ENOMEM; + + return add_uevent_var(env, "MODALIAS=typec:id%04Xm%02X", + altmode->svid, altmode->mode); +} + +static int typec_altmode_create_links(struct altmode *alt) +{ + struct device *port_dev = &alt->partner->adev.dev; + struct device *dev = &alt->adev.dev; + int err; + + err = sysfs_create_link(&dev->kobj, &port_dev->kobj, "port"); + if (err) + return err; + + err = sysfs_create_link(&port_dev->kobj, &dev->kobj, "partner"); + if (err) + sysfs_remove_link(&dev->kobj, "port"); + + return err; +} + +static void typec_altmode_remove_links(struct altmode *alt) +{ + sysfs_remove_link(&alt->partner->adev.dev.kobj, "partner"); + sysfs_remove_link(&alt->adev.dev.kobj, "port"); +} + +static int typec_probe(struct device *dev) +{ + struct typec_altmode_driver *drv = to_altmode_driver(dev->driver); + struct typec_altmode *adev = to_typec_altmode(dev); + struct altmode *altmode = to_altmode(adev); + int ret; + + /* Fail if the port does not support the alternate mode */ + if (!altmode->partner) + return -ENODEV; + + ret = typec_altmode_create_links(altmode); + if (ret) { + dev_warn(dev, "failed to create symlinks\n"); + return ret; + } + + ret = drv->probe(adev); + if (ret) + typec_altmode_remove_links(altmode); + + return ret; +} + +static int typec_remove(struct device *dev) +{ + struct typec_altmode_driver *drv = to_altmode_driver(dev->driver); + struct typec_altmode *adev = to_typec_altmode(dev); + struct altmode *altmode = to_altmode(adev); + + typec_altmode_remove_links(altmode); + + if (drv->remove) + drv->remove(to_typec_altmode(dev)); + + if (adev->active) { + WARN_ON(typec_altmode_set_state(adev, TYPEC_STATE_SAFE)); + typec_altmode_update_active(adev, false); + } + + adev->desc = NULL; + adev->ops = NULL; + + return 0; +} + +struct bus_type typec_bus = { + .name = "typec", + .dev_groups = typec_groups, + .match = typec_match, + .uevent = typec_uevent, + .probe = typec_probe, + .remove = typec_remove, +}; diff --git a/drivers/usb/typec/bus.h b/drivers/usb/typec/bus.h new file mode 100644 index 000000000000..db40e61d8b72 --- /dev/null +++ b/drivers/usb/typec/bus.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __USB_TYPEC_ALTMODE_H__ +#define __USB_TYPEC_ALTMODE_H__ + +#include <linux/usb/typec_altmode.h> +#include <linux/usb/typec_mux.h> + +struct bus_type; + +struct altmode { + unsigned int id; + struct typec_altmode adev; + struct typec_mux *mux; + + enum typec_port_data roles; + + struct attribute *attrs[5]; + char group_name[8]; + struct attribute_group group; + const struct attribute_group *groups[2]; + + struct altmode *partner; + struct altmode *plug[2]; + + struct blocking_notifier_head nh; +}; + +#define to_altmode(d) container_of(d, struct altmode, adev) + +extern struct bus_type typec_bus; +extern const struct device_type typec_altmode_dev_type; +extern const struct device_type typec_port_dev_type; + +#define is_typec_altmode(_dev_) (_dev_->type == &typec_altmode_dev_type) +#define is_typec_port(_dev_) (_dev_->type == &typec_port_dev_type) + +#endif /* __USB_TYPEC_ALTMODE_H__ */ diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 53df10df2f9d..c202975f8097 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -10,39 +10,13 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/slab.h> -#include <linux/usb/typec.h> -#include <linux/usb/typec_mux.h> -struct typec_mode { - int index; - u32 vdo; - char *desc; - enum typec_port_type roles; - - struct typec_altmode *alt_mode; - - unsigned int active:1; - - char group_name[6]; - struct attribute_group group; - struct attribute *attrs[5]; - struct device_attribute vdo_attr; - struct device_attribute desc_attr; - struct device_attribute active_attr; - struct device_attribute roles_attr; -}; - -struct typec_altmode { - struct device dev; - u16 svid; - int n_modes; - struct typec_mode modes[ALTMODE_MAX_MODES]; - const struct attribute_group *mode_groups[ALTMODE_MAX_MODES]; -}; +#include "bus.h" struct typec_plug { struct device dev; enum typec_plug_index index; + struct ida mode_ids; }; struct typec_cable { @@ -57,11 +31,13 @@ struct typec_partner { unsigned int usb_pd:1; struct usb_pd_identity *identity; enum typec_accessory accessory; + struct ida mode_ids; }; struct typec_port { unsigned int id; struct device dev; + struct ida mode_ids; int prefer_role; enum typec_data_role data_role; @@ -82,17 +58,14 @@ struct typec_port { #define to_typec_plug(_dev_) container_of(_dev_, struct typec_plug, dev) #define to_typec_cable(_dev_) container_of(_dev_, struct typec_cable, dev) #define to_typec_partner(_dev_) container_of(_dev_, struct typec_partner, dev) -#define to_altmode(_dev_) container_of(_dev_, struct typec_altmode, dev) static const struct device_type typec_partner_dev_type; static const struct device_type typec_cable_dev_type; static const struct device_type typec_plug_dev_type; -static const struct device_type typec_port_dev_type; #define is_typec_partner(_dev_) (_dev_->type == &typec_partner_dev_type) #define is_typec_cable(_dev_) (_dev_->type == &typec_cable_dev_type) #define is_typec_plug(_dev_) (_dev_->type == &typec_plug_dev_type) -#define is_typec_port(_dev_) (_dev_->type == &typec_port_dev_type) static DEFINE_IDA(typec_index_ida); static struct class *typec_class; @@ -174,28 +147,148 @@ static void typec_report_identity(struct device *dev) /* ------------------------------------------------------------------------- */ /* Alternate Modes */ +static int altmode_match(struct device *dev, void *data) +{ + struct typec_altmode *adev = to_typec_altmode(dev); + struct typec_device_id *id = data; + + if (!is_typec_altmode(dev)) + return 0; + + return ((adev->svid == id->svid) && (adev->mode == id->mode)); +} + +static void typec_altmode_set_partner(struct altmode *altmode) +{ + struct typec_altmode *adev = &altmode->adev; + struct typec_device_id id = { adev->svid, adev->mode, }; + struct typec_port *port = typec_altmode2port(adev); + struct altmode *partner; + struct device *dev; + + dev = device_find_child(&port->dev, &id, altmode_match); + if (!dev) + return; + + /* Bind the port alt mode to the partner/plug alt mode. */ + partner = to_altmode(to_typec_altmode(dev)); + altmode->partner = partner; + + /* Bind the partner/plug alt mode to the port alt mode. */ + if (is_typec_plug(adev->dev.parent)) { + struct typec_plug *plug = to_typec_plug(adev->dev.parent); + + partner->plug[plug->index] = altmode; + } else { + partner->partner = altmode; + } +} + +static void typec_altmode_put_partner(struct altmode *altmode) +{ + struct altmode *partner = altmode->partner; + struct typec_altmode *adev; + + if (!partner) + return; + + adev = &partner->adev; + + if (is_typec_plug(adev->dev.parent)) { + struct typec_plug *plug = to_typec_plug(adev->dev.parent); + + partner->plug[plug->index] = NULL; + } else { + partner->partner = NULL; + } + put_device(&adev->dev); +} + +static int __typec_port_match(struct device *dev, const void *name) +{ + return !strcmp((const char *)name, dev_name(dev)); +} + +static void *typec_port_match(struct device_connection *con, int ep, void *data) +{ + return class_find_device(typec_class, NULL, con->endpoint[ep], + __typec_port_match); +} + +struct typec_altmode * +typec_altmode_register_notifier(struct device *dev, u16 svid, u8 mode, + struct notifier_block *nb) +{ + struct typec_device_id id = { svid, mode, }; + struct device *altmode_dev; + struct device *port_dev; + struct altmode *altmode; + int ret; + + /* Find the port linked to the caller */ + port_dev = device_connection_find_match(dev, NULL, NULL, + typec_port_match); + if (IS_ERR_OR_NULL(port_dev)) + return port_dev ? ERR_CAST(port_dev) : ERR_PTR(-ENODEV); + + /* Find the altmode with matching svid */ + altmode_dev = device_find_child(port_dev, &id, altmode_match); + + put_device(port_dev); + + if (!altmode_dev) + return ERR_PTR(-ENODEV); + + altmode = to_altmode(to_typec_altmode(altmode_dev)); + + /* Register notifier */ + ret = blocking_notifier_chain_register(&altmode->nh, nb); + if (ret) { + put_device(altmode_dev); + return ERR_PTR(ret); + } + + return &altmode->adev; +} +EXPORT_SYMBOL_GPL(typec_altmode_register_notifier); + +void typec_altmode_unregister_notifier(struct typec_altmode *adev, + struct notifier_block *nb) +{ + struct altmode *altmode = to_altmode(adev); + + blocking_notifier_chain_unregister(&altmode->nh, nb); + put_device(&adev->dev); +} +EXPORT_SYMBOL_GPL(typec_altmode_unregister_notifier); + /** * typec_altmode_update_active - Report Enter/Exit mode - * @alt: Handle to the alternate mode - * @mode: Mode index + * @adev: Handle to the alternate mode * @active: True when the mode has been entered * * If a partner or cable plug executes Enter/Exit Mode command successfully, the * drivers use this routine to report the updated state of the mode. */ -void typec_altmode_update_active(struct typec_altmode *alt, int mode, - bool active) +void typec_altmode_update_active(struct typec_altmode *adev, bool active) { - struct typec_mode *m = &alt->modes[mode]; char dir[6]; - if (m->active == active) + if (adev->active == active) return; - m->active = active; - snprintf(dir, sizeof(dir), "mode%d", mode); - sysfs_notify(&alt->dev.kobj, dir, "active"); - kobject_uevent(&alt->dev.kobj, KOBJ_CHANGE); + if (!is_typec_port(adev->dev.parent)) { + if (!active) + module_put(adev->dev.driver->owner); + else + WARN_ON(!try_module_get(adev->dev.driver->owner)); + } + + adev->active = active; + snprintf(dir, sizeof(dir), "mode%d", adev->mode); + sysfs_notify(&adev->dev.kobj, dir, "active"); + sysfs_notify(&adev->dev.kobj, NULL, "active"); + kobject_uevent(&adev->dev.kobj, KOBJ_CHANGE); } EXPORT_SYMBOL_GPL(typec_altmode_update_active); @@ -220,68 +313,78 @@ struct typec_port *typec_altmode2port(struct typec_altmode *alt) EXPORT_SYMBOL_GPL(typec_altmode2port); static ssize_t -typec_altmode_vdo_show(struct device *dev, struct device_attribute *attr, - char *buf) +vdo_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct typec_mode *mode = container_of(attr, struct typec_mode, - vdo_attr); + struct typec_altmode *alt = to_typec_altmode(dev); - return sprintf(buf, "0x%08x\n", mode->vdo); + return sprintf(buf, "0x%08x\n", alt->vdo); } +static DEVICE_ATTR_RO(vdo); static ssize_t -typec_altmode_desc_show(struct device *dev, struct device_attribute *attr, - char *buf) +description_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct typec_mode *mode = container_of(attr, struct typec_mode, - desc_attr); + struct typec_altmode *alt = to_typec_altmode(dev); - return sprintf(buf, "%s\n", mode->desc ? mode->desc : ""); + return sprintf(buf, "%s\n", alt->desc ? alt->desc : ""); } +static DEVICE_ATTR_RO(description); static ssize_t -typec_altmode_active_show(struct device *dev, struct device_attribute *attr, - char *buf) +active_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct typec_mode *mode = container_of(attr, struct typec_mode, - active_attr); + struct typec_altmode *alt = to_typec_altmode(dev); - return sprintf(buf, "%s\n", mode->active ? "yes" : "no"); + return sprintf(buf, "%s\n", alt->active ? "yes" : "no"); } -static ssize_t -typec_altmode_active_store(struct device *dev, struct device_attribute *attr, - const char *buf, size_t size) +static ssize_t active_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) { - struct typec_mode *mode = container_of(attr, struct typec_mode, - active_attr); - struct typec_port *port = typec_altmode2port(mode->alt_mode); - bool activate; + struct typec_altmode *adev = to_typec_altmode(dev); + struct altmode *altmode = to_altmode(adev); + bool enter; int ret; - if (!port->cap->activate_mode) - return -EOPNOTSUPP; - - ret = kstrtobool(buf, &activate); + ret = kstrtobool(buf, &enter); if (ret) return ret; - ret = port->cap->activate_mode(port->cap, mode->index, activate); - if (ret) - return ret; + if (adev->active == enter) + return size; + + if (is_typec_port(adev->dev.parent)) { + typec_altmode_update_active(adev, enter); + + /* Make sure that the partner exits the mode before disabling */ + if (altmode->partner && !enter && altmode->partner->adev.active) + typec_altmode_exit(&altmode->partner->adev); + } else if (altmode->partner) { + if (enter && !altmode->partner->adev.active) { + dev_warn(dev, "port has the mode disabled\n"); + return -EPERM; + } + } + + /* Note: If there is no driver, the mode will not be entered */ + if (adev->ops && adev->ops->activate) { + ret = adev->ops->activate(adev, enter); + if (ret) + return ret; + } return size; } +static DEVICE_ATTR_RW(active); static ssize_t -typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, - char *buf) +supported_roles_show(struct device *dev, struct device_attribute *attr, + char *buf) { - struct typec_mode *mode = container_of(attr, struct typec_mode, - roles_attr); + struct altmode *alt = to_altmode(to_typec_altmode(dev)); ssize_t ret; - switch (mode->roles) { + switch (alt->roles) { case TYPEC_PORT_SRC: ret = sprintf(buf, "source\n"); break; @@ -295,89 +398,74 @@ typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, } return ret; } +static DEVICE_ATTR_RO(supported_roles); -static void typec_init_modes(struct typec_altmode *alt, - const struct typec_mode_desc *desc, bool is_port) +static ssize_t +mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - int i; - - for (i = 0; i < alt->n_modes; i++, desc++) { - struct typec_mode *mode = &alt->modes[i]; - - /* Not considering the human readable description critical */ - mode->desc = kstrdup(desc->desc, GFP_KERNEL); - if (desc->desc && !mode->desc) - dev_err(&alt->dev, "failed to copy mode%d desc\n", i); - - mode->alt_mode = alt; - mode->vdo = desc->vdo; - mode->roles = desc->roles; - mode->index = desc->index; - sprintf(mode->group_name, "mode%d", desc->index); - - sysfs_attr_init(&mode->vdo_attr.attr); - mode->vdo_attr.attr.name = "vdo"; - mode->vdo_attr.attr.mode = 0444; - mode->vdo_attr.show = typec_altmode_vdo_show; - - sysfs_attr_init(&mode->desc_attr.attr); - mode->desc_attr.attr.name = "description"; - mode->desc_attr.attr.mode = 0444; - mode->desc_attr.show = typec_altmode_desc_show; - - sysfs_attr_init(&mode->active_attr.attr); - mode->active_attr.attr.name = "active"; - mode->active_attr.attr.mode = 0644; - mode->active_attr.show = typec_altmode_active_show; - mode->active_attr.store = typec_altmode_active_store; - - mode->attrs[0] = &mode->vdo_attr.attr; - mode->attrs[1] = &mode->desc_attr.attr; - mode->attrs[2] = &mode->active_attr.attr; - - /* With ports, list the roles that the mode is supported with */ - if (is_port) { - sysfs_attr_init(&mode->roles_attr.attr); - mode->roles_attr.attr.name = "supported_roles"; - mode->roles_attr.attr.mode = 0444; - mode->roles_attr.show = typec_altmode_roles_show; - - mode->attrs[3] = &mode->roles_attr.attr; - } + struct typec_altmode *adev = to_typec_altmode(dev); - mode->group.attrs = mode->attrs; - mode->group.name = mode->group_name; - - alt->mode_groups[i] = &mode->group; - } + return sprintf(buf, "%u\n", adev->mode); } +static DEVICE_ATTR_RO(mode); -static ssize_t svid_show(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t +svid_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct typec_altmode *alt = to_altmode(dev); + struct typec_altmode *adev = to_typec_altmode(dev); - return sprintf(buf, "%04x\n", alt->svid); + return sprintf(buf, "%04x\n", adev->svid); } static DEVICE_ATTR_RO(svid); static struct attribute *typec_altmode_attrs[] = { + &dev_attr_active.attr, + &dev_attr_mode.attr, &dev_attr_svid.attr, + &dev_attr_vdo.attr, NULL }; ATTRIBUTE_GROUPS(typec_altmode); +static int altmode_id_get(struct device *dev) +{ + struct ida *ids; + + if (is_typec_partner(dev)) + ids = &to_typec_partner(dev)->mode_ids; + else if (is_typec_plug(dev)) + ids = &to_typec_plug(dev)->mode_ids; + else + ids = &to_typec_port(dev)->mode_ids; + + return ida_simple_get(ids, 0, 0, GFP_KERNEL); +} + +static void altmode_id_remove(struct device *dev, int id) +{ + struct ida *ids; + + if (is_typec_partner(dev)) + ids = &to_typec_partner(dev)->mode_ids; + else if (is_typec_plug(dev)) + ids = &to_typec_plug(dev)->mode_ids; + else + ids = &to_typec_port(dev)->mode_ids; + + ida_simple_remove(ids, id); +} + static void typec_altmode_release(struct device *dev) { - struct typec_altmode *alt = to_altmode(dev); - int i; + struct altmode *alt = to_altmode(to_typec_altmode(dev)); + + typec_altmode_put_partner(alt); - for (i = 0; i < alt->n_modes; i++) - kfree(alt->modes[i].desc); + altmode_id_remove(alt->adev.dev.parent, alt->id); kfree(alt); } -static const struct device_type typec_altmode_dev_type = { +const struct device_type typec_altmode_dev_type = { .name = "typec_alternate_mode", .groups = typec_altmode_groups, .release = typec_altmode_release, @@ -387,44 +475,74 @@ static struct typec_altmode * typec_register_altmode(struct device *parent, const struct typec_altmode_desc *desc) { - struct typec_altmode *alt; + unsigned int id = altmode_id_get(parent); + bool is_port = is_typec_port(parent); + struct altmode *alt; int ret; alt = kzalloc(sizeof(*alt), GFP_KERNEL); if (!alt) return ERR_PTR(-ENOMEM); - alt->svid = desc->svid; - alt->n_modes = desc->n_modes; - typec_init_modes(alt, desc->modes, is_typec_port(parent)); + alt->adev.svid = desc->svid; + alt->adev.mode = desc->mode; + alt->adev.vdo = desc->vdo; + alt->roles = desc->roles; + alt->id = id; + + alt->attrs[0] = &dev_attr_vdo.attr; + alt->attrs[1] = &dev_attr_description.attr; + alt->attrs[2] = &dev_attr_active.attr; + + if (is_port) { + alt->attrs[3] = &dev_attr_supported_roles.attr; + alt->adev.active = true; /* Enabled by default */ + } - alt->dev.parent = parent; - alt->dev.groups = alt->mode_groups; - alt->dev.type = &typec_altmode_dev_type; - dev_set_name(&alt->dev, "svid-%04x", alt->svid); + sprintf(alt->group_name, "mode%d", desc->mode); + alt->group.name = alt->group_name; + alt->group.attrs = alt->attrs; + alt->groups[0] = &alt->group; - ret = device_register(&alt->dev); + alt->adev.dev.parent = parent; + alt->adev.dev.groups = alt->groups; + alt->adev.dev.type = &typec_altmode_dev_type; + dev_set_name(&alt->adev.dev, "%s.%u", dev_name(parent), id); + + /* Link partners and plugs with the ports */ + if (is_port) + BLOCKING_INIT_NOTIFIER_HEAD(&alt->nh); + else + typec_altmode_set_partner(alt); + + /* The partners are bind to drivers */ + if (is_typec_partner(parent)) + alt->adev.dev.bus = &typec_bus; + + ret = device_register(&alt->adev.dev); if (ret) { dev_err(parent, "failed to register alternate mode (%d)\n", ret); - put_device(&alt->dev); + put_device(&alt->adev.dev); return ERR_PTR(ret); } - return alt; + return &alt->adev; } /** * typec_unregister_altmode - Unregister Alternate Mode - * @alt: The alternate mode to be unregistered + * @adev: The alternate mode to be unregistered * * Unregister device created with typec_partner_register_altmode(), * typec_plug_register_altmode() or typec_port_register_altmode(). */ -void typec_unregister_altmode(struct typec_altmode *alt) +void typec_unregister_altmode(struct typec_altmode *adev) { - if (!IS_ERR_OR_NULL(alt)) - device_unregister(&alt->dev); + if (IS_ERR_OR_NULL(adev)) + return; + typec_mux_put(to_altmode(adev)->mux); + device_unregister(&adev->dev); } EXPORT_SYMBOL_GPL(typec_unregister_altmode); @@ -462,6 +580,7 @@ static void typec_partner_release(struct device *dev) { struct typec_partner *partner = to_typec_partner(dev); + ida_destroy(&partner->mode_ids); kfree(partner); } @@ -527,6 +646,7 @@ struct typec_partner *typec_register_partner(struct typec_port *port, if (!partner) return ERR_PTR(-ENOMEM); + ida_init(&partner->mode_ids); partner->usb_pd = desc->usb_pd; partner->accessory = desc->accessory; @@ -575,6 +695,7 @@ static void typec_plug_release(struct device *dev) { struct typec_plug *plug = to_typec_plug(dev); + ida_destroy(&plug->mode_ids); kfree(plug); } @@ -627,6 +748,7 @@ struct typec_plug *typec_register_plug(struct typec_cable *cable, sprintf(name, "plug%d", desc->index); + ida_init(&plug->mode_ids); plug->index = desc->index; plug->dev.class = typec_class; plug->dev.parent = &cable->dev; @@ -796,12 +918,18 @@ static const char * const typec_data_roles[] = { [TYPEC_HOST] = "host", }; -static const char * const typec_port_types[] = { +static const char * const typec_port_power_roles[] = { [TYPEC_PORT_SRC] = "source", [TYPEC_PORT_SNK] = "sink", [TYPEC_PORT_DRP] = "dual", }; +static const char * const typec_port_data_roles[] = { + [TYPEC_PORT_DFP] = "host", + [TYPEC_PORT_UFP] = "device", + [TYPEC_PORT_DRD] = "dual", +}; + static const char * const typec_port_types_drp[] = { [TYPEC_PORT_SRC] = "dual [source] sink", [TYPEC_PORT_SNK] = "dual source [sink]", @@ -932,7 +1060,7 @@ static ssize_t power_role_store(struct device *dev, mutex_lock(&port->port_type_lock); if (port->port_type != TYPEC_PORT_DRP) { dev_dbg(dev, "port type fixed at \"%s\"", - typec_port_types[port->port_type]); + typec_port_power_roles[port->port_type]); ret = -EOPNOTSUPP; goto unlock_and_ret; } @@ -973,7 +1101,7 @@ port_type_store(struct device *dev, struct device_attribute *attr, return -EOPNOTSUPP; } - ret = sysfs_match_string(typec_port_types, buf); + ret = sysfs_match_string(typec_port_power_roles, buf); if (ret < 0) return ret; @@ -1007,7 +1135,7 @@ port_type_show(struct device *dev, struct device_attribute *attr, return sprintf(buf, "%s\n", typec_port_types_drp[port->port_type]); - return sprintf(buf, "[%s]\n", typec_port_types[port->cap->type]); + return sprintf(buf, "[%s]\n", typec_port_power_roles[port->cap->type]); } static DEVICE_ATTR_RW(port_type); @@ -1141,12 +1269,13 @@ static void typec_release(struct device *dev) struct typec_port *port = to_typec_port(dev); ida_simple_remove(&typec_index_ida, port->id); + ida_destroy(&port->mode_ids); typec_switch_put(port->sw); typec_mux_put(port->mux); kfree(port); } -static const struct device_type typec_port_dev_type = { +const struct device_type typec_port_dev_type = { .name = "typec_port", .groups = typec_groups, .uevent = typec_uevent, @@ -1252,6 +1381,50 @@ void typec_set_pwr_opmode(struct typec_port *port, } EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); +/** + * typec_find_port_power_role - Get the typec port power capability + * @name: port power capability string + * + * This routine is used to find the typec_port_type by its string name. + * + * Returns typec_port_type if success, otherwise negative error code. + */ +int typec_find_port_power_role(const char *name) +{ + return match_string(typec_port_power_roles, + ARRAY_SIZE(typec_port_power_roles), name); +} +EXPORT_SYMBOL_GPL(typec_find_port_power_role); + +/** + * typec_find_power_role - Find the typec one specific power role + * @name: power role string + * + * This routine is used to find the typec_role by its string name. + * + * Returns typec_role if success, otherwise negative error code. + */ +int typec_find_power_role(const char *name) +{ + return match_string(typec_roles, ARRAY_SIZE(typec_roles), name); +} +EXPORT_SYMBOL_GPL(typec_find_power_role); + +/** + * typec_find_port_data_role - Get the typec port data capability + * @name: port data capability string + * + * This routine is used to find the typec_port_data by its string name. + * + * Returns typec_port_data if success, otherwise negative error code. + */ +int typec_find_port_data_role(const char *name) +{ + return match_string(typec_port_data_roles, + ARRAY_SIZE(typec_port_data_roles), name); +} +EXPORT_SYMBOL_GPL(typec_find_port_data_role); + /* ------------------------------------------ */ /* API for Multiplexer/DeMultiplexer Switches */ @@ -1280,12 +1453,24 @@ int typec_set_orientation(struct typec_port *port, EXPORT_SYMBOL_GPL(typec_set_orientation); /** + * typec_get_orientation - Get USB Type-C cable plug orientation + * @port: USB Type-C Port + * + * Get current cable plug orientation for @port. + */ +enum typec_orientation typec_get_orientation(struct typec_port *port) +{ + return port->orientation; +} +EXPORT_SYMBOL_GPL(typec_get_orientation); + +/** * typec_set_mode - Set mode of operation for USB Type-C connector - * @port: USB Type-C port for the connector - * @mode: Operation mode for the connector + * @port: USB Type-C connector + * @mode: Accessory Mode, USB Operation or Safe State * - * Set mode @mode for @port. This function will configure the muxes needed to - * enter @mode. + * Configure @port for Accessory Mode @mode. This function will configure the + * muxes needed for @mode. */ int typec_set_mode(struct typec_port *port, int mode) { @@ -1299,6 +1484,7 @@ EXPORT_SYMBOL_GPL(typec_set_mode); * typec_port_register_altmode - Register USB Type-C Port Alternate Mode * @port: USB Type-C Port that supports the alternate mode * @desc: Description of the alternate mode + * @drvdata: Private pointer to driver specific info * * This routine is used to register an alternate mode that @port is capable of * supporting. @@ -1309,7 +1495,23 @@ struct typec_altmode * typec_port_register_altmode(struct typec_port *port, const struct typec_altmode_desc *desc) { - return typec_register_altmode(&port->dev, desc); + struct typec_altmode *adev; + struct typec_mux *mux; + char id[10]; + + sprintf(id, "id%04xm%02x", desc->svid, desc->mode); + + mux = typec_mux_get(port->dev.parent, id); + if (IS_ERR(mux)) + return ERR_CAST(mux); + + adev = typec_register_altmode(&port->dev, desc); + if (IS_ERR(adev)) + typec_mux_put(mux); + else + to_altmode(adev)->mux = mux; + + return adev; } EXPORT_SYMBOL_GPL(typec_port_register_altmode); @@ -1345,7 +1547,7 @@ struct typec_port *typec_register_port(struct device *parent, goto err_switch; } - port->mux = typec_mux_get(cap->fwnode ? &port->dev : parent); + port->mux = typec_mux_get(parent, "typec-mux"); if (IS_ERR(port->mux)) { ret = PTR_ERR(port->mux); goto err_mux; @@ -1383,10 +1585,12 @@ struct typec_port *typec_register_port(struct device *parent, break; } + ida_init(&port->mode_ids); + mutex_init(&port->port_type_lock); + port->id = id; port->cap = cap; port->port_type = cap->type; - mutex_init(&port->port_type_lock); port->prefer_role = cap->prefer_role; port->dev.class = typec_class; @@ -1430,8 +1634,19 @@ EXPORT_SYMBOL_GPL(typec_unregister_port); static int __init typec_init(void) { + int ret; + + ret = bus_register(&typec_bus); + if (ret) + return ret; + typec_class = class_create(THIS_MODULE, "typec"); - return PTR_ERR_OR_ZERO(typec_class); + if (IS_ERR(typec_class)) { + bus_unregister(&typec_bus); + return PTR_ERR(typec_class); + } + + return 0; } subsys_initcall(typec_init); @@ -1439,6 +1654,7 @@ static void __exit typec_exit(void) { class_destroy(typec_class); ida_destroy(&typec_index_ida); + bus_unregister(&typec_bus); } module_exit(typec_exit); diff --git a/drivers/usb/typec/fusb302/fusb302.c b/drivers/usb/typec/fusb302/fusb302.c index 1e68da10bf17..82bed9810be6 100644 --- a/drivers/usb/typec/fusb302/fusb302.c +++ b/drivers/usb/typec/fusb302/fusb302.c @@ -864,17 +864,6 @@ done: return ret; } -static int tcpm_set_current_limit(struct tcpc_dev *dev, u32 max_ma, u32 mv) -{ - struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, - tcpc_dev); - - fusb302_log(chip, "current limit: %d ma, %d mv (not implemented)", - max_ma, mv); - - return 0; -} - static int fusb302_pd_tx_flush(struct fusb302_chip *chip) { return fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL0, @@ -1213,7 +1202,6 @@ static void init_tcpc_dev(struct tcpc_dev *fusb302_tcpc_dev) fusb302_tcpc_dev->set_polarity = tcpm_set_polarity; fusb302_tcpc_dev->set_vconn = tcpm_set_vconn; fusb302_tcpc_dev->set_vbus = tcpm_set_vbus; - fusb302_tcpc_dev->set_current_limit = tcpm_set_current_limit; fusb302_tcpc_dev->set_pd_rx = tcpm_set_pd_rx; fusb302_tcpc_dev->set_roles = tcpm_set_roles; fusb302_tcpc_dev->start_drp_toggling = tcpm_start_drp_toggling; diff --git a/drivers/usb/typec/mux.c b/drivers/usb/typec/mux.c index 9d8330e9c431..ddaac63ecf12 100644 --- a/drivers/usb/typec/mux.c +++ b/drivers/usb/typec/mux.c @@ -123,19 +123,19 @@ static void *typec_mux_match(struct device_connection *con, int ep, void *data) /** * typec_mux_get - Find USB Type-C Multiplexer * @dev: The caller device + * @name: Mux identifier * * Finds a mux linked to the caller. This function is primarily meant for the * Type-C drivers. Returns a reference to the mux on success, NULL if no * matching connection was found, or ERR_PTR(-EPROBE_DEFER) when a connection * was found but the mux has not been enumerated yet. */ -struct typec_mux *typec_mux_get(struct device *dev) +struct typec_mux *typec_mux_get(struct device *dev, const char *name) { struct typec_mux *mux; mutex_lock(&mux_lock); - mux = device_connection_find_match(dev, "typec-mux", NULL, - typec_mux_match); + mux = device_connection_find_match(dev, name, NULL, typec_mux_match); if (!IS_ERR_OR_NULL(mux)) get_device(mux->dev); mutex_unlock(&mux_lock); diff --git a/drivers/usb/typec/mux/pi3usb30532.c b/drivers/usb/typec/mux/pi3usb30532.c index b0e88db60ecf..64eb5983e17a 100644 --- a/drivers/usb/typec/mux/pi3usb30532.c +++ b/drivers/usb/typec/mux/pi3usb30532.c @@ -9,7 +9,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/mutex.h> -#include <linux/usb/tcpm.h> +#include <linux/usb/typec_dp.h> #include <linux/usb/typec_mux.h> #define PI3USB30532_CONF 0x00 @@ -83,21 +83,24 @@ static int pi3usb30532_mux_set(struct typec_mux *mux, int state) new_conf = pi->conf; switch (state) { - case TYPEC_MUX_NONE: + case TYPEC_STATE_SAFE: new_conf = PI3USB30532_CONF_OPEN; break; - case TYPEC_MUX_USB: + case TYPEC_STATE_USB: new_conf = (new_conf & PI3USB30532_CONF_SWAP) | PI3USB30532_CONF_USB3; break; - case TYPEC_MUX_DP: + case TYPEC_DP_STATE_C: + case TYPEC_DP_STATE_E: new_conf = (new_conf & PI3USB30532_CONF_SWAP) | PI3USB30532_CONF_4LANE_DP; break; - case TYPEC_MUX_DOCK: + case TYPEC_DP_STATE_D: new_conf = (new_conf & PI3USB30532_CONF_SWAP) | PI3USB30532_CONF_USB3_AND_2LANE_DP; break; + default: + break; } ret = pi3usb30532_set_conf(pi, new_conf); diff --git a/drivers/usb/typec/tcpci.c b/drivers/usb/typec/tcpci.c new file mode 100644 index 000000000000..ac6b418b15f1 --- /dev/null +++ b/drivers/usb/typec/tcpci.c @@ -0,0 +1,612 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright 2015-2017 Google, Inc + * + * USB Type-C Port Controller Interface. + */ + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/property.h> +#include <linux/regmap.h> +#include <linux/usb/pd.h> +#include <linux/usb/tcpm.h> +#include <linux/usb/typec.h> + +#include "tcpci.h" + +#define PD_RETRY_COUNT 3 + +struct tcpci { + struct device *dev; + + struct tcpm_port *port; + + struct regmap *regmap; + + bool controls_vbus; + + struct tcpc_dev tcpc; + struct tcpci_data *data; +}; + +struct tcpci_chip { + struct tcpci *tcpci; + struct tcpci_data data; +}; + +static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc) +{ + return container_of(tcpc, struct tcpci, tcpc); +} + +static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, u16 *val) +{ + return regmap_raw_read(tcpci->regmap, reg, val, sizeof(u16)); +} + +static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val) +{ + return regmap_raw_write(tcpci->regmap, reg, &val, sizeof(u16)); +} + +static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + switch (cc) { + case TYPEC_CC_RA: + reg = (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + case TYPEC_CC_RD: + reg = (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + case TYPEC_CC_RP_DEF: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_DEF << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_1_5: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_1_5 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_3_0: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_3_0 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_OPEN: + default: + reg = (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + } + + ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc, + enum typec_cc_status cc) +{ + int ret; + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg = TCPC_ROLE_CTRL_DRP; + + /* Handle vendor drp toggling */ + if (tcpci->data->start_drp_toggling) { + ret = tcpci->data->start_drp_toggling(tcpci, tcpci->data, cc); + if (ret < 0) + return ret; + } + + switch (cc) { + default: + case TYPEC_CC_RP_DEF: + reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_1_5: + reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_3_0: + reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + } + + if (cc == TYPEC_CC_RD) + reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + else + reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT); + ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + return regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_LOOK4CONNECTION); +} + +static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink) +{ + switch (cc) { + case 0x1: + return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA; + case 0x2: + return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD; + case 0x3: + if (sink) + return TYPEC_CC_RP_3_0; + /* fall through */ + case 0x0: + default: + return TYPEC_CC_OPEN; + } +} + +static int tcpci_get_cc(struct tcpc_dev *tcpc, + enum typec_cc_status *cc1, enum typec_cc_status *cc2) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + ret = regmap_read(tcpci->regmap, TCPC_CC_STATUS, ®); + if (ret < 0) + return ret; + + *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) & + TCPC_CC_STATUS_CC1_MASK, + reg & TCPC_CC_STATUS_TERM); + *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) & + TCPC_CC_STATUS_CC2_MASK, + reg & TCPC_CC_STATUS_TERM); + + return 0; +} + +static int tcpci_set_polarity(struct tcpc_dev *tcpc, + enum typec_cc_polarity polarity) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + /* Keep the disconnect cc line open */ + ret = regmap_read(tcpci->regmap, TCPC_ROLE_CTRL, ®); + if (ret < 0) + return ret; + + if (polarity == TYPEC_POLARITY_CC2) + reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT; + else + reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT; + ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + + return regmap_write(tcpci->regmap, TCPC_TCPC_CTRL, + (polarity == TYPEC_POLARITY_CC2) ? + TCPC_TCPC_CTRL_ORIENTATION : 0); +} + +static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + int ret; + + /* Handle vendor set vconn */ + if (tcpci->data->set_vconn) { + ret = tcpci->data->set_vconn(tcpci, tcpci->data, enable); + if (ret < 0) + return ret; + } + + return regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL, + TCPC_POWER_CTRL_VCONN_ENABLE, + enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); +} + +static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached, + enum typec_role role, enum typec_data_role data) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + reg = PD_REV20 << TCPC_MSG_HDR_INFO_REV_SHIFT; + if (role == TYPEC_SOURCE) + reg |= TCPC_MSG_HDR_INFO_PWR_ROLE; + if (data == TYPEC_HOST) + reg |= TCPC_MSG_HDR_INFO_DATA_ROLE; + ret = regmap_write(tcpci->regmap, TCPC_MSG_HDR_INFO, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_set_pd_rx(struct tcpc_dev *tcpc, bool enable) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg = 0; + int ret; + + if (enable) + reg = TCPC_RX_DETECT_SOP | TCPC_RX_DETECT_HARD_RESET; + ret = regmap_write(tcpci->regmap, TCPC_RX_DETECT, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_get_vbus(struct tcpc_dev *tcpc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®); + if (ret < 0) + return ret; + + return !!(reg & TCPC_POWER_STATUS_VBUS_PRES); +} + +static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + int ret; + + /* Disable both source and sink first before enabling anything */ + + if (!source) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_DISABLE_SRC_VBUS); + if (ret < 0) + return ret; + } + + if (!sink) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_DISABLE_SINK_VBUS); + if (ret < 0) + return ret; + } + + if (source) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_SRC_VBUS_DEFAULT); + if (ret < 0) + return ret; + } + + if (sink) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_SINK_VBUS); + if (ret < 0) + return ret; + } + + return 0; +} + +static int tcpci_pd_transmit(struct tcpc_dev *tcpc, + enum tcpm_transmit_type type, + const struct pd_message *msg) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + u16 header = msg ? le16_to_cpu(msg->header) : 0; + unsigned int reg, cnt; + int ret; + + cnt = msg ? pd_header_cnt(header) * 4 : 0; + ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2); + if (ret < 0) + return ret; + + ret = tcpci_write16(tcpci, TCPC_TX_HDR, header); + if (ret < 0) + return ret; + + if (cnt > 0) { + ret = regmap_raw_write(tcpci->regmap, TCPC_TX_DATA, + &msg->payload, cnt); + if (ret < 0) + return ret; + } + + reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) | + (type << TCPC_TRANSMIT_TYPE_SHIFT); + ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_init(struct tcpc_dev *tcpc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned long timeout = jiffies + msecs_to_jiffies(2000); /* XXX */ + unsigned int reg; + int ret; + + while (time_before_eq(jiffies, timeout)) { + ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®); + if (ret < 0) + return ret; + if (!(reg & TCPC_POWER_STATUS_UNINIT)) + break; + usleep_range(10000, 20000); + } + if (time_after(jiffies, timeout)) + return -ETIMEDOUT; + + /* Handle vendor init */ + if (tcpci->data->init) { + ret = tcpci->data->init(tcpci, tcpci->data); + if (ret < 0) + return ret; + } + + /* Clear all events */ + ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff); + if (ret < 0) + return ret; + + if (tcpci->controls_vbus) + reg = TCPC_POWER_STATUS_VBUS_PRES; + else + reg = 0; + ret = regmap_write(tcpci->regmap, TCPC_POWER_STATUS_MASK, reg); + if (ret < 0) + return ret; + + /* Enable Vbus detection */ + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_ENABLE_VBUS_DETECT); + if (ret < 0) + return ret; + + reg = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_FAILED | + TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_RX_STATUS | + TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS; + if (tcpci->controls_vbus) + reg |= TCPC_ALERT_POWER_STATUS; + return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg); +} + +irqreturn_t tcpci_irq(struct tcpci *tcpci) +{ + u16 status; + + tcpci_read16(tcpci, TCPC_ALERT, &status); + + /* + * Clear alert status for everything except RX_STATUS, which shouldn't + * be cleared until we have successfully retrieved message. + */ + if (status & ~TCPC_ALERT_RX_STATUS) + tcpci_write16(tcpci, TCPC_ALERT, + status & ~TCPC_ALERT_RX_STATUS); + + if (status & TCPC_ALERT_CC_STATUS) + tcpm_cc_change(tcpci->port); + + if (status & TCPC_ALERT_POWER_STATUS) { + unsigned int reg; + + regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, ®); + + /* + * If power status mask has been reset, then the TCPC + * has reset. + */ + if (reg == 0xff) + tcpm_tcpc_reset(tcpci->port); + else + tcpm_vbus_change(tcpci->port); + } + + if (status & TCPC_ALERT_RX_STATUS) { + struct pd_message msg; + unsigned int cnt; + u16 header; + + regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt); + + tcpci_read16(tcpci, TCPC_RX_HDR, &header); + msg.header = cpu_to_le16(header); + + if (WARN_ON(cnt > sizeof(msg.payload))) + cnt = sizeof(msg.payload); + + if (cnt > 0) + regmap_raw_read(tcpci->regmap, TCPC_RX_DATA, + &msg.payload, cnt); + + /* Read complete, clear RX status alert bit */ + tcpci_write16(tcpci, TCPC_ALERT, TCPC_ALERT_RX_STATUS); + + tcpm_pd_receive(tcpci->port, &msg); + } + + if (status & TCPC_ALERT_RX_HARD_RST) + tcpm_pd_hard_reset(tcpci->port); + + if (status & TCPC_ALERT_TX_SUCCESS) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_SUCCESS); + else if (status & TCPC_ALERT_TX_DISCARDED) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_DISCARDED); + else if (status & TCPC_ALERT_TX_FAILED) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED); + + return IRQ_HANDLED; +} +EXPORT_SYMBOL_GPL(tcpci_irq); + +static irqreturn_t _tcpci_irq(int irq, void *dev_id) +{ + struct tcpci_chip *chip = dev_id; + + return tcpci_irq(chip->tcpci); +} + +static const struct regmap_config tcpci_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */ +}; + +static int tcpci_parse_config(struct tcpci *tcpci) +{ + tcpci->controls_vbus = true; /* XXX */ + + tcpci->tcpc.fwnode = device_get_named_child_node(tcpci->dev, + "connector"); + if (!tcpci->tcpc.fwnode) { + dev_err(tcpci->dev, "Can't find connector node.\n"); + return -EINVAL; + } + + return 0; +} + +struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data) +{ + struct tcpci *tcpci; + int err; + + tcpci = devm_kzalloc(dev, sizeof(*tcpci), GFP_KERNEL); + if (!tcpci) + return ERR_PTR(-ENOMEM); + + tcpci->dev = dev; + tcpci->data = data; + tcpci->regmap = data->regmap; + + tcpci->tcpc.init = tcpci_init; + tcpci->tcpc.get_vbus = tcpci_get_vbus; + tcpci->tcpc.set_vbus = tcpci_set_vbus; + tcpci->tcpc.set_cc = tcpci_set_cc; + tcpci->tcpc.get_cc = tcpci_get_cc; + tcpci->tcpc.set_polarity = tcpci_set_polarity; + tcpci->tcpc.set_vconn = tcpci_set_vconn; + tcpci->tcpc.start_drp_toggling = tcpci_start_drp_toggling; + + tcpci->tcpc.set_pd_rx = tcpci_set_pd_rx; + tcpci->tcpc.set_roles = tcpci_set_roles; + tcpci->tcpc.pd_transmit = tcpci_pd_transmit; + + err = tcpci_parse_config(tcpci); + if (err < 0) + return ERR_PTR(err); + + tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc); + if (IS_ERR(tcpci->port)) + return ERR_CAST(tcpci->port); + + return tcpci; +} +EXPORT_SYMBOL_GPL(tcpci_register_port); + +void tcpci_unregister_port(struct tcpci *tcpci) +{ + tcpm_unregister_port(tcpci->port); +} +EXPORT_SYMBOL_GPL(tcpci_unregister_port); + +static int tcpci_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + struct tcpci_chip *chip; + int err; + u16 val = 0; + + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->data.regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config); + if (IS_ERR(chip->data.regmap)) + return PTR_ERR(chip->data.regmap); + + i2c_set_clientdata(client, chip); + + /* Disable chip interrupts before requesting irq */ + err = regmap_raw_write(chip->data.regmap, TCPC_ALERT_MASK, &val, + sizeof(u16)); + if (err < 0) + return err; + + chip->tcpci = tcpci_register_port(&client->dev, &chip->data); + if (IS_ERR(chip->tcpci)) + return PTR_ERR(chip->tcpci); + + err = devm_request_threaded_irq(&client->dev, client->irq, NULL, + _tcpci_irq, + IRQF_ONESHOT | IRQF_TRIGGER_LOW, + dev_name(&client->dev), chip); + if (err < 0) { + tcpci_unregister_port(chip->tcpci); + return err; + } + + return 0; +} + +static int tcpci_remove(struct i2c_client *client) +{ + struct tcpci_chip *chip = i2c_get_clientdata(client); + + tcpci_unregister_port(chip->tcpci); + + return 0; +} + +static const struct i2c_device_id tcpci_id[] = { + { "tcpci", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tcpci_id); + +#ifdef CONFIG_OF +static const struct of_device_id tcpci_of_match[] = { + { .compatible = "nxp,ptn5110", }, + {}, +}; +MODULE_DEVICE_TABLE(of, tcpci_of_match); +#endif + +static struct i2c_driver tcpci_i2c_driver = { + .driver = { + .name = "tcpci", + .of_match_table = of_match_ptr(tcpci_of_match), + }, + .probe = tcpci_probe, + .remove = tcpci_remove, + .id_table = tcpci_id, +}; +module_i2c_driver(tcpci_i2c_driver); + +MODULE_DESCRIPTION("USB Type-C Port Controller Interface driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/typec/tcpci.h b/drivers/usb/typec/tcpci.h new file mode 100644 index 000000000000..303ebde26546 --- /dev/null +++ b/drivers/usb/typec/tcpci.h @@ -0,0 +1,139 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2015-2017 Google, Inc + * + * USB Type-C Port Controller Interface. + */ + +#ifndef __LINUX_USB_TCPCI_H +#define __LINUX_USB_TCPCI_H + +#define TCPC_VENDOR_ID 0x0 +#define TCPC_PRODUCT_ID 0x2 +#define TCPC_BCD_DEV 0x4 +#define TCPC_TC_REV 0x6 +#define TCPC_PD_REV 0x8 +#define TCPC_PD_INT_REV 0xa + +#define TCPC_ALERT 0x10 +#define TCPC_ALERT_VBUS_DISCNCT BIT(11) +#define TCPC_ALERT_RX_BUF_OVF BIT(10) +#define TCPC_ALERT_FAULT BIT(9) +#define TCPC_ALERT_V_ALARM_LO BIT(8) +#define TCPC_ALERT_V_ALARM_HI BIT(7) +#define TCPC_ALERT_TX_SUCCESS BIT(6) +#define TCPC_ALERT_TX_DISCARDED BIT(5) +#define TCPC_ALERT_TX_FAILED BIT(4) +#define TCPC_ALERT_RX_HARD_RST BIT(3) +#define TCPC_ALERT_RX_STATUS BIT(2) +#define TCPC_ALERT_POWER_STATUS BIT(1) +#define TCPC_ALERT_CC_STATUS BIT(0) + +#define TCPC_ALERT_MASK 0x12 +#define TCPC_POWER_STATUS_MASK 0x14 +#define TCPC_FAULT_STATUS_MASK 0x15 +#define TCPC_CONFIG_STD_OUTPUT 0x18 + +#define TCPC_TCPC_CTRL 0x19 +#define TCPC_TCPC_CTRL_ORIENTATION BIT(0) + +#define TCPC_ROLE_CTRL 0x1a +#define TCPC_ROLE_CTRL_DRP BIT(6) +#define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4 +#define TCPC_ROLE_CTRL_RP_VAL_MASK 0x3 +#define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0 +#define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1 +#define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2 +#define TCPC_ROLE_CTRL_CC2_SHIFT 2 +#define TCPC_ROLE_CTRL_CC2_MASK 0x3 +#define TCPC_ROLE_CTRL_CC1_SHIFT 0 +#define TCPC_ROLE_CTRL_CC1_MASK 0x3 +#define TCPC_ROLE_CTRL_CC_RA 0x0 +#define TCPC_ROLE_CTRL_CC_RP 0x1 +#define TCPC_ROLE_CTRL_CC_RD 0x2 +#define TCPC_ROLE_CTRL_CC_OPEN 0x3 + +#define TCPC_FAULT_CTRL 0x1b + +#define TCPC_POWER_CTRL 0x1c +#define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) + +#define TCPC_CC_STATUS 0x1d +#define TCPC_CC_STATUS_TOGGLING BIT(5) +#define TCPC_CC_STATUS_TERM BIT(4) +#define TCPC_CC_STATUS_CC2_SHIFT 2 +#define TCPC_CC_STATUS_CC2_MASK 0x3 +#define TCPC_CC_STATUS_CC1_SHIFT 0 +#define TCPC_CC_STATUS_CC1_MASK 0x3 + +#define TCPC_POWER_STATUS 0x1e +#define TCPC_POWER_STATUS_UNINIT BIT(6) +#define TCPC_POWER_STATUS_VBUS_DET BIT(3) +#define TCPC_POWER_STATUS_VBUS_PRES BIT(2) + +#define TCPC_FAULT_STATUS 0x1f + +#define TCPC_COMMAND 0x23 +#define TCPC_CMD_WAKE_I2C 0x11 +#define TCPC_CMD_DISABLE_VBUS_DETECT 0x22 +#define TCPC_CMD_ENABLE_VBUS_DETECT 0x33 +#define TCPC_CMD_DISABLE_SINK_VBUS 0x44 +#define TCPC_CMD_SINK_VBUS 0x55 +#define TCPC_CMD_DISABLE_SRC_VBUS 0x66 +#define TCPC_CMD_SRC_VBUS_DEFAULT 0x77 +#define TCPC_CMD_SRC_VBUS_HIGH 0x88 +#define TCPC_CMD_LOOK4CONNECTION 0x99 +#define TCPC_CMD_RXONEMORE 0xAA +#define TCPC_CMD_I2C_IDLE 0xFF + +#define TCPC_DEV_CAP_1 0x24 +#define TCPC_DEV_CAP_2 0x26 +#define TCPC_STD_INPUT_CAP 0x28 +#define TCPC_STD_OUTPUT_CAP 0x29 + +#define TCPC_MSG_HDR_INFO 0x2e +#define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3) +#define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0) +#define TCPC_MSG_HDR_INFO_REV_SHIFT 1 +#define TCPC_MSG_HDR_INFO_REV_MASK 0x3 + +#define TCPC_RX_DETECT 0x2f +#define TCPC_RX_DETECT_HARD_RESET BIT(5) +#define TCPC_RX_DETECT_SOP BIT(0) + +#define TCPC_RX_BYTE_CNT 0x30 +#define TCPC_RX_BUF_FRAME_TYPE 0x31 +#define TCPC_RX_HDR 0x32 +#define TCPC_RX_DATA 0x34 /* through 0x4f */ + +#define TCPC_TRANSMIT 0x50 +#define TCPC_TRANSMIT_RETRY_SHIFT 4 +#define TCPC_TRANSMIT_RETRY_MASK 0x3 +#define TCPC_TRANSMIT_TYPE_SHIFT 0 +#define TCPC_TRANSMIT_TYPE_MASK 0x7 + +#define TCPC_TX_BYTE_CNT 0x51 +#define TCPC_TX_HDR 0x52 +#define TCPC_TX_DATA 0x54 /* through 0x6f */ + +#define TCPC_VBUS_VOLTAGE 0x70 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72 +#define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74 +#define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 +#define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 + +struct tcpci; +struct tcpci_data { + struct regmap *regmap; + int (*init)(struct tcpci *tcpci, struct tcpci_data *data); + int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data, + bool enable); + int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data, + enum typec_cc_status cc); +}; + +struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data); +void tcpci_unregister_port(struct tcpci *tcpci); +irqreturn_t tcpci_irq(struct tcpci *tcpci); + +#endif /* __LINUX_USB_TCPCI_H */ diff --git a/drivers/usb/typec/tcpci_rt1711h.c b/drivers/usb/typec/tcpci_rt1711h.c new file mode 100644 index 000000000000..017389021b96 --- /dev/null +++ b/drivers/usb/typec/tcpci_rt1711h.c @@ -0,0 +1,312 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2018, Richtek Technology Corporation + * + * Richtek RT1711H Type-C Chip Driver + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/gpio/consumer.h> +#include <linux/usb/tcpm.h> +#include <linux/regmap.h> +#include "tcpci.h" + +#define RT1711H_VID 0x29CF +#define RT1711H_PID 0x1711 + +#define RT1711H_RTCTRL8 0x9B + +/* Autoidle timeout = (tout * 2 + 1) * 6.4ms */ +#define RT1711H_RTCTRL8_SET(ck300, ship_off, auto_idle, tout) \ + (((ck300) << 7) | ((ship_off) << 5) | \ + ((auto_idle) << 3) | ((tout) & 0x07)) + +#define RT1711H_RTCTRL11 0x9E + +/* I2C timeout = (tout + 1) * 12.5ms */ +#define RT1711H_RTCTRL11_SET(en, tout) \ + (((en) << 7) | ((tout) & 0x0F)) + +#define RT1711H_RTCTRL13 0xA0 +#define RT1711H_RTCTRL14 0xA1 +#define RT1711H_RTCTRL15 0xA2 +#define RT1711H_RTCTRL16 0xA3 + +struct rt1711h_chip { + struct tcpci_data data; + struct tcpci *tcpci; + struct device *dev; +}; + +static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val) +{ + return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u16)); +} + +static int rt1711h_write16(struct rt1711h_chip *chip, unsigned int reg, u16 val) +{ + return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u16)); +} + +static int rt1711h_read8(struct rt1711h_chip *chip, unsigned int reg, u8 *val) +{ + return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u8)); +} + +static int rt1711h_write8(struct rt1711h_chip *chip, unsigned int reg, u8 val) +{ + return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8)); +} + +static const struct regmap_config rt1711h_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0xFF, /* 0x80 .. 0xFF are vendor defined */ +}; + +static struct rt1711h_chip *tdata_to_rt1711h(struct tcpci_data *tdata) +{ + return container_of(tdata, struct rt1711h_chip, data); +} + +static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata) +{ + int ret; + struct rt1711h_chip *chip = tdata_to_rt1711h(tdata); + + /* CK 300K from 320K, shipping off, auto_idle enable, tout = 32ms */ + ret = rt1711h_write8(chip, RT1711H_RTCTRL8, + RT1711H_RTCTRL8_SET(0, 1, 1, 2)); + if (ret < 0) + return ret; + + /* I2C reset : (val + 1) * 12.5ms */ + ret = rt1711h_write8(chip, RT1711H_RTCTRL11, + RT1711H_RTCTRL11_SET(1, 0x0F)); + if (ret < 0) + return ret; + + /* tTCPCfilter : (26.7 * val) us */ + ret = rt1711h_write8(chip, RT1711H_RTCTRL14, 0x0F); + if (ret < 0) + return ret; + + /* tDRP : (51.2 + 6.4 * val) ms */ + ret = rt1711h_write8(chip, RT1711H_RTCTRL15, 0x04); + if (ret < 0) + return ret; + + /* dcSRC.DRP : 33% */ + return rt1711h_write16(chip, RT1711H_RTCTRL16, 330); +} + +static int rt1711h_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata, + bool enable) +{ + struct rt1711h_chip *chip = tdata_to_rt1711h(tdata); + + return rt1711h_write8(chip, RT1711H_RTCTRL8, + RT1711H_RTCTRL8_SET(0, 1, !enable, 2)); +} + +static int rt1711h_start_drp_toggling(struct tcpci *tcpci, + struct tcpci_data *tdata, + enum typec_cc_status cc) +{ + struct rt1711h_chip *chip = tdata_to_rt1711h(tdata); + int ret; + unsigned int reg = 0; + + switch (cc) { + default: + case TYPEC_CC_RP_DEF: + reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_1_5: + reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_3_0: + reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + } + + if (cc == TYPEC_CC_RD) + reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + else + reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT); + + ret = rt1711h_write8(chip, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + usleep_range(500, 1000); + + return 0; +} + +static irqreturn_t rt1711h_irq(int irq, void *dev_id) +{ + int ret; + u16 alert; + u8 status; + struct rt1711h_chip *chip = dev_id; + + if (!chip->tcpci) + return IRQ_HANDLED; + + ret = rt1711h_read16(chip, TCPC_ALERT, &alert); + if (ret < 0) + goto out; + + if (alert & TCPC_ALERT_CC_STATUS) { + ret = rt1711h_read8(chip, TCPC_CC_STATUS, &status); + if (ret < 0) + goto out; + /* Clear cc change event triggered by starting toggling */ + if (status & TCPC_CC_STATUS_TOGGLING) + rt1711h_write8(chip, TCPC_ALERT, TCPC_ALERT_CC_STATUS); + } + +out: + return tcpci_irq(chip->tcpci); +} + +static int rt1711h_init_alert(struct rt1711h_chip *chip, + struct i2c_client *client) +{ + int ret; + + /* Disable chip interrupts before requesting irq */ + ret = rt1711h_write16(chip, TCPC_ALERT_MASK, 0); + if (ret < 0) + return ret; + + ret = devm_request_threaded_irq(chip->dev, client->irq, NULL, + rt1711h_irq, + IRQF_ONESHOT | IRQF_TRIGGER_LOW, + dev_name(chip->dev), chip); + if (ret < 0) + return ret; + enable_irq_wake(client->irq); + return 0; +} + +static int rt1711h_sw_reset(struct rt1711h_chip *chip) +{ + int ret; + + ret = rt1711h_write8(chip, RT1711H_RTCTRL13, 0x01); + if (ret < 0) + return ret; + + usleep_range(1000, 2000); + return 0; +} + +static int rt1711h_check_revision(struct i2c_client *i2c) +{ + int ret; + + ret = i2c_smbus_read_word_data(i2c, TCPC_VENDOR_ID); + if (ret < 0) + return ret; + if (ret != RT1711H_VID) { + dev_err(&i2c->dev, "vid is not correct, 0x%04x\n", ret); + return -ENODEV; + } + ret = i2c_smbus_read_word_data(i2c, TCPC_PRODUCT_ID); + if (ret < 0) + return ret; + if (ret != RT1711H_PID) { + dev_err(&i2c->dev, "pid is not correct, 0x%04x\n", ret); + return -ENODEV; + } + return 0; +} + +static int rt1711h_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + int ret; + struct rt1711h_chip *chip; + + ret = rt1711h_check_revision(client); + if (ret < 0) { + dev_err(&client->dev, "check vid/pid fail\n"); + return ret; + } + + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->data.regmap = devm_regmap_init_i2c(client, + &rt1711h_regmap_config); + if (IS_ERR(chip->data.regmap)) + return PTR_ERR(chip->data.regmap); + + chip->dev = &client->dev; + i2c_set_clientdata(client, chip); + + ret = rt1711h_sw_reset(chip); + if (ret < 0) + return ret; + + ret = rt1711h_init_alert(chip, client); + if (ret < 0) + return ret; + + chip->data.init = rt1711h_init; + chip->data.set_vconn = rt1711h_set_vconn; + chip->data.start_drp_toggling = rt1711h_start_drp_toggling; + chip->tcpci = tcpci_register_port(chip->dev, &chip->data); + if (IS_ERR_OR_NULL(chip->tcpci)) + return PTR_ERR(chip->tcpci); + + return 0; +} + +static int rt1711h_remove(struct i2c_client *client) +{ + struct rt1711h_chip *chip = i2c_get_clientdata(client); + + tcpci_unregister_port(chip->tcpci); + return 0; +} + +static const struct i2c_device_id rt1711h_id[] = { + { "rt1711h", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, rt1711h_id); + +#ifdef CONFIG_OF +static const struct of_device_id rt1711h_of_match[] = { + { .compatible = "richtek,rt1711h", }, + {}, +}; +MODULE_DEVICE_TABLE(of, rt1711h_of_match); +#endif + +static struct i2c_driver rt1711h_i2c_driver = { + .driver = { + .name = "rt1711h", + .of_match_table = of_match_ptr(rt1711h_of_match), + }, + .probe = rt1711h_probe, + .remove = rt1711h_remove, + .id_table = rt1711h_id, +}; +module_i2c_driver(rt1711h_i2c_driver); + +MODULE_AUTHOR("ShuFan Lee <shufan_lee@richtek.com>"); +MODULE_DESCRIPTION("RT1711H USB Type-C Port Controller Interface Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/typec/tcpm.c b/drivers/usb/typec/tcpm.c index d1d20252bad8..4f1f4215f3d6 100644 --- a/drivers/usb/typec/tcpm.c +++ b/drivers/usb/typec/tcpm.c @@ -26,7 +26,7 @@ #include <linux/usb/pd_vdo.h> #include <linux/usb/role.h> #include <linux/usb/tcpm.h> -#include <linux/usb/typec.h> +#include <linux/usb/typec_altmode.h> #include <linux/workqueue.h> #define FOREACH_STATE(S) \ @@ -169,13 +169,14 @@ enum pd_msg_request { /* Alternate mode support */ #define SVID_DISCOVERY_MAX 16 +#define ALTMODE_DISCOVERY_MAX (SVID_DISCOVERY_MAX * MODE_DISCOVERY_MAX) struct pd_mode_data { int svid_index; /* current SVID index */ int nsvids; u16 svids[SVID_DISCOVERY_MAX]; int altmodes; /* number of alternate modes */ - struct typec_altmode_desc altmode_desc[SVID_DISCOVERY_MAX]; + struct typec_altmode_desc altmode_desc[ALTMODE_DISCOVERY_MAX]; }; struct pd_pps_data { @@ -310,8 +311,8 @@ struct tcpm_port { /* Alternate mode data */ struct pd_mode_data mode_data; - struct typec_altmode *partner_altmode[SVID_DISCOVERY_MAX]; - struct typec_altmode *port_altmode[SVID_DISCOVERY_MAX]; + struct typec_altmode *partner_altmode[ALTMODE_DISCOVERY_MAX]; + struct typec_altmode *port_altmode[ALTMODE_DISCOVERY_MAX]; /* Deadline in jiffies to exit src_try_wait state */ unsigned long max_wait; @@ -641,14 +642,14 @@ void tcpm_pd_transmit_complete(struct tcpm_port *port, } EXPORT_SYMBOL_GPL(tcpm_pd_transmit_complete); -static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, +static int tcpm_mux_set(struct tcpm_port *port, int state, enum usb_role usb_role, enum typec_orientation orientation) { int ret; - tcpm_log(port, "Requesting mux mode %d, usb-role %d, orientation %d", - mode, usb_role, orientation); + tcpm_log(port, "Requesting mux state %d, usb-role %d, orientation %d", + state, usb_role, orientation); ret = typec_set_orientation(port->typec_port, orientation); if (ret) @@ -660,7 +661,7 @@ static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, return ret; } - return typec_set_mode(port->typec_port, mode); + return typec_set_mode(port->typec_port, state); } static int tcpm_set_polarity(struct tcpm_port *port, @@ -790,7 +791,7 @@ static int tcpm_set_roles(struct tcpm_port *port, bool attached, else usb_role = USB_ROLE_DEVICE; - ret = tcpm_mux_set(port, TYPEC_MUX_USB, usb_role, orientation); + ret = tcpm_mux_set(port, TYPEC_STATE_USB, usb_role, orientation); if (ret < 0) return ret; @@ -998,7 +999,6 @@ static void svdm_consume_modes(struct tcpm_port *port, const __le32 *payload, { struct pd_mode_data *pmdata = &port->mode_data; struct typec_altmode_desc *paltmode; - struct typec_mode_desc *pmode; int i; if (pmdata->altmodes >= ARRAY_SIZE(port->partner_altmode)) { @@ -1006,32 +1006,36 @@ static void svdm_consume_modes(struct tcpm_port *port, const __le32 *payload, return; } - paltmode = &pmdata->altmode_desc[pmdata->altmodes]; - memset(paltmode, 0, sizeof(*paltmode)); + for (i = 1; i < cnt; i++) { + paltmode = &pmdata->altmode_desc[pmdata->altmodes]; + memset(paltmode, 0, sizeof(*paltmode)); - paltmode->svid = pmdata->svids[pmdata->svid_index]; + paltmode->svid = pmdata->svids[pmdata->svid_index]; + paltmode->mode = i; + paltmode->vdo = le32_to_cpu(payload[i]); - tcpm_log(port, " Alternate mode %d: SVID 0x%04x", - pmdata->altmodes, paltmode->svid); + tcpm_log(port, " Alternate mode %d: SVID 0x%04x, VDO %d: 0x%08x", + pmdata->altmodes, paltmode->svid, + paltmode->mode, paltmode->vdo); - for (i = 1; i < cnt && paltmode->n_modes < ALTMODE_MAX_MODES; i++) { - pmode = &paltmode->modes[paltmode->n_modes]; - memset(pmode, 0, sizeof(*pmode)); - pmode->vdo = le32_to_cpu(payload[i]); - pmode->index = i - 1; - paltmode->n_modes++; - tcpm_log(port, " VDO %d: 0x%08x", - pmode->index, pmode->vdo); + pmdata->altmodes++; } - port->partner_altmode[pmdata->altmodes] = - typec_partner_register_altmode(port->partner, paltmode); - if (!port->partner_altmode[pmdata->altmodes]) { - tcpm_log(port, - "Failed to register alternate modes for SVID 0x%04x", - paltmode->svid); - return; +} + +static void tcpm_register_partner_altmodes(struct tcpm_port *port) +{ + struct pd_mode_data *modep = &port->mode_data; + struct typec_altmode *altmode; + int i; + + for (i = 0; i < modep->altmodes; i++) { + altmode = typec_partner_register_altmode(port->partner, + &modep->altmode_desc[i]); + if (!altmode) + tcpm_log(port, "Failed to register partner SVID 0x%04x", + modep->altmode_desc[i].svid); + port->partner_altmode[i] = altmode; } - pmdata->altmodes++; } #define supports_modal(port) PD_IDH_MODAL_SUPP((port)->partner_ident.id_header) @@ -1039,19 +1043,32 @@ static void svdm_consume_modes(struct tcpm_port *port, const __le32 *payload, static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, u32 *response) { - u32 p0 = le32_to_cpu(payload[0]); - int cmd_type = PD_VDO_CMDT(p0); - int cmd = PD_VDO_CMD(p0); + struct typec_altmode *adev; + struct typec_altmode *pdev; struct pd_mode_data *modep; + u32 p[PD_MAX_PAYLOAD]; int rlen = 0; - u16 svid; + int cmd_type; + int cmd; int i; + for (i = 0; i < cnt; i++) + p[i] = le32_to_cpu(payload[i]); + + cmd_type = PD_VDO_CMDT(p[0]); + cmd = PD_VDO_CMD(p[0]); + tcpm_log(port, "Rx VDM cmd 0x%x type %d cmd %d len %d", - p0, cmd_type, cmd, cnt); + p[0], cmd_type, cmd, cnt); modep = &port->mode_data; + adev = typec_match_altmode(port->port_altmode, ALTMODE_DISCOVERY_MAX, + PD_VDO_VID(p[0]), PD_VDO_OPOS(p[0])); + + pdev = typec_match_altmode(port->partner_altmode, ALTMODE_DISCOVERY_MAX, + PD_VDO_VID(p[0]), PD_VDO_OPOS(p[0])); + switch (cmd_type) { case CMDT_INIT: switch (cmd) { @@ -1073,17 +1090,19 @@ static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, case CMD_EXIT_MODE: break; case CMD_ATTENTION: - break; + /* Attention command does not have response */ + typec_altmode_attention(adev, p[1]); + return 0; default: break; } if (rlen >= 1) { - response[0] = p0 | VDO_CMDT(CMDT_RSP_ACK); + response[0] = p[0] | VDO_CMDT(CMDT_RSP_ACK); } else if (rlen == 0) { - response[0] = p0 | VDO_CMDT(CMDT_RSP_NAK); + response[0] = p[0] | VDO_CMDT(CMDT_RSP_NAK); rlen = 1; } else { - response[0] = p0 | VDO_CMDT(CMDT_RSP_BUSY); + response[0] = p[0] | VDO_CMDT(CMDT_RSP_BUSY); rlen = 1; } break; @@ -1116,14 +1135,39 @@ static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, svdm_consume_modes(port, payload, cnt); modep->svid_index++; if (modep->svid_index < modep->nsvids) { - svid = modep->svids[modep->svid_index]; + u16 svid = modep->svids[modep->svid_index]; response[0] = VDO(svid, 1, CMD_DISCOVER_MODES); rlen = 1; } else { - /* enter alternate mode if/when implemented */ + tcpm_register_partner_altmodes(port); } break; case CMD_ENTER_MODE: + typec_altmode_update_active(pdev, true); + + if (typec_altmode_vdm(adev, p[0], &p[1], cnt)) { + response[0] = VDO(adev->svid, 1, CMD_EXIT_MODE); + response[0] |= VDO_OPOS(adev->mode); + return 1; + } + return 0; + case CMD_EXIT_MODE: + typec_altmode_update_active(pdev, false); + + /* Back to USB Operation */ + WARN_ON(typec_altmode_notify(adev, TYPEC_STATE_USB, + NULL)); + break; + default: + break; + } + break; + case CMDT_RSP_NAK: + switch (cmd) { + case CMD_ENTER_MODE: + /* Back to USB Operation */ + WARN_ON(typec_altmode_notify(adev, TYPEC_STATE_USB, + NULL)); break; default: break; @@ -1133,6 +1177,9 @@ static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, break; } + /* Informing the alternate mode drivers about everything */ + typec_altmode_vdm(adev, p[0], &p[1], cnt); + return rlen; } @@ -1416,6 +1463,57 @@ static int tcpm_validate_caps(struct tcpm_port *port, const u32 *pdo, return 0; } +static int tcpm_altmode_enter(struct typec_altmode *altmode) +{ + struct tcpm_port *port = typec_altmode_get_drvdata(altmode); + u32 header; + + mutex_lock(&port->lock); + header = VDO(altmode->svid, 1, CMD_ENTER_MODE); + header |= VDO_OPOS(altmode->mode); + + tcpm_queue_vdm(port, header, NULL, 0); + mod_delayed_work(port->wq, &port->vdm_state_machine, 0); + mutex_unlock(&port->lock); + + return 0; +} + +static int tcpm_altmode_exit(struct typec_altmode *altmode) +{ + struct tcpm_port *port = typec_altmode_get_drvdata(altmode); + u32 header; + + mutex_lock(&port->lock); + header = VDO(altmode->svid, 1, CMD_EXIT_MODE); + header |= VDO_OPOS(altmode->mode); + + tcpm_queue_vdm(port, header, NULL, 0); + mod_delayed_work(port->wq, &port->vdm_state_machine, 0); + mutex_unlock(&port->lock); + + return 0; +} + +static int tcpm_altmode_vdm(struct typec_altmode *altmode, + u32 header, const u32 *data, int count) +{ + struct tcpm_port *port = typec_altmode_get_drvdata(altmode); + + mutex_lock(&port->lock); + tcpm_queue_vdm(port, header, data, count - 1); + mod_delayed_work(port->wq, &port->vdm_state_machine, 0); + mutex_unlock(&port->lock); + + return 0; +} + +static const struct typec_altmode_ops tcpm_altmode_ops = { + .enter = tcpm_altmode_enter, + .exit = tcpm_altmode_exit, + .vdm = tcpm_altmode_vdm, +}; + /* * PD (data, control) command handling functions */ @@ -2435,15 +2533,15 @@ static int tcpm_set_charge(struct tcpm_port *port, bool charge) return 0; } -static bool tcpm_start_drp_toggling(struct tcpm_port *port) +static bool tcpm_start_drp_toggling(struct tcpm_port *port, + enum typec_cc_status cc) { int ret; if (port->tcpc->start_drp_toggling && port->port_type == TYPEC_PORT_DRP) { tcpm_log_force(port, "Start DRP toggling"); - ret = port->tcpc->start_drp_toggling(port->tcpc, - tcpm_rp_cc(port)); + ret = port->tcpc->start_drp_toggling(port->tcpc, cc); if (!ret) return true; } @@ -2547,7 +2645,7 @@ out_disable_vconn: out_disable_pd: port->tcpc->set_pd_rx(port->tcpc, false); out_disable_mux: - tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE, + tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE, TYPEC_ORIENTATION_NONE); return ret; } @@ -2593,7 +2691,7 @@ static void tcpm_reset_port(struct tcpm_port *port) tcpm_init_vconn(port); tcpm_set_current_limit(port, 0, 0); tcpm_set_polarity(port, TYPEC_POLARITY_CC1); - tcpm_mux_set(port, TYPEC_MUX_NONE, USB_ROLE_NONE, + tcpm_mux_set(port, TYPEC_STATE_SAFE, USB_ROLE_NONE, TYPEC_ORIENTATION_NONE); tcpm_set_attached_state(port, false); port->try_src_count = 0; @@ -2749,7 +2847,7 @@ static void run_state_machine(struct tcpm_port *port) if (!port->non_pd_role_swap) tcpm_swap_complete(port, -ENOTCONN); tcpm_src_detach(port); - if (tcpm_start_drp_toggling(port)) { + if (tcpm_start_drp_toggling(port, tcpm_rp_cc(port))) { tcpm_set_state(port, DRP_TOGGLING, 0); break; } @@ -2924,7 +3022,7 @@ static void run_state_machine(struct tcpm_port *port) tcpm_swap_complete(port, -ENOTCONN); tcpm_pps_complete(port, -ENOTCONN); tcpm_snk_detach(port); - if (tcpm_start_drp_toggling(port)) { + if (tcpm_start_drp_toggling(port, TYPEC_CC_RD)) { tcpm_set_state(port, DRP_TOGGLING, 0); break; } @@ -4239,6 +4337,81 @@ static int tcpm_copy_vdos(u32 *dest_vdo, const u32 *src_vdo, return nr_vdo; } +static int tcpm_fw_get_caps(struct tcpm_port *port, + struct fwnode_handle *fwnode) +{ + const char *cap_str; + int ret; + u32 mw; + + if (!fwnode) + return -EINVAL; + + /* USB data support is optional */ + ret = fwnode_property_read_string(fwnode, "data-role", &cap_str); + if (ret == 0) { + port->typec_caps.data = typec_find_port_data_role(cap_str); + if (port->typec_caps.data < 0) + return -EINVAL; + } + + ret = fwnode_property_read_string(fwnode, "power-role", &cap_str); + if (ret < 0) + return ret; + + port->typec_caps.type = typec_find_port_power_role(cap_str); + if (port->typec_caps.type < 0) + return -EINVAL; + port->port_type = port->typec_caps.type; + + if (port->port_type == TYPEC_PORT_SNK) + goto sink; + + /* Get source pdos */ + ret = fwnode_property_read_u32_array(fwnode, "source-pdos", + NULL, 0); + if (ret <= 0) + return -EINVAL; + + port->nr_src_pdo = min(ret, PDO_MAX_OBJECTS); + ret = fwnode_property_read_u32_array(fwnode, "source-pdos", + port->src_pdo, port->nr_src_pdo); + if ((ret < 0) || tcpm_validate_caps(port, port->src_pdo, + port->nr_src_pdo)) + return -EINVAL; + + if (port->port_type == TYPEC_PORT_SRC) + return 0; + + /* Get the preferred power role for DRP */ + ret = fwnode_property_read_string(fwnode, "try-power-role", &cap_str); + if (ret < 0) + return ret; + + port->typec_caps.prefer_role = typec_find_power_role(cap_str); + if (port->typec_caps.prefer_role < 0) + return -EINVAL; +sink: + /* Get sink pdos */ + ret = fwnode_property_read_u32_array(fwnode, "sink-pdos", + NULL, 0); + if (ret <= 0) + return -EINVAL; + + port->nr_snk_pdo = min(ret, PDO_MAX_OBJECTS); + ret = fwnode_property_read_u32_array(fwnode, "sink-pdos", + port->snk_pdo, port->nr_snk_pdo); + if ((ret < 0) || tcpm_validate_caps(port, port->snk_pdo, + port->nr_snk_pdo)) + return -EINVAL; + + if (fwnode_property_read_u32(fwnode, "op-sink-microwatt", &mw) < 0) + return -EINVAL; + port->operating_snk_mw = mw / 1000; + + return 0; +} + int tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo, unsigned int nr_pdo) { @@ -4524,12 +4697,36 @@ static int devm_tcpm_psy_register(struct tcpm_port *port) return PTR_ERR_OR_ZERO(port->psy); } +static int tcpm_copy_caps(struct tcpm_port *port, + const struct tcpc_config *tcfg) +{ + if (tcpm_validate_caps(port, tcfg->src_pdo, tcfg->nr_src_pdo) || + tcpm_validate_caps(port, tcfg->snk_pdo, tcfg->nr_snk_pdo)) + return -EINVAL; + + port->nr_src_pdo = tcpm_copy_pdos(port->src_pdo, tcfg->src_pdo, + tcfg->nr_src_pdo); + port->nr_snk_pdo = tcpm_copy_pdos(port->snk_pdo, tcfg->snk_pdo, + tcfg->nr_snk_pdo); + + port->nr_snk_vdo = tcpm_copy_vdos(port->snk_vdo, tcfg->snk_vdo, + tcfg->nr_snk_vdo); + + port->operating_snk_mw = tcfg->operating_snk_mw; + + port->typec_caps.prefer_role = tcfg->default_role; + port->typec_caps.type = tcfg->type; + port->typec_caps.data = tcfg->data; + + return 0; +} + struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) { struct tcpm_port *port; int i, err; - if (!dev || !tcpc || !tcpc->config || + if (!dev || !tcpc || !tcpc->get_vbus || !tcpc->set_cc || !tcpc->get_cc || !tcpc->set_polarity || !tcpc->set_vconn || !tcpc->set_vbus || !tcpc->set_pd_rx || !tcpc->set_roles || !tcpc->pd_transmit) @@ -4559,29 +4756,18 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) init_completion(&port->pps_complete); tcpm_debugfs_init(port); - if (tcpm_validate_caps(port, tcpc->config->src_pdo, - tcpc->config->nr_src_pdo) || - tcpm_validate_caps(port, tcpc->config->snk_pdo, - tcpc->config->nr_snk_pdo)) { - err = -EINVAL; + err = tcpm_fw_get_caps(port, tcpc->fwnode); + if ((err < 0) && tcpc->config) + err = tcpm_copy_caps(port, tcpc->config); + if (err < 0) goto out_destroy_wq; - } - port->nr_src_pdo = tcpm_copy_pdos(port->src_pdo, tcpc->config->src_pdo, - tcpc->config->nr_src_pdo); - port->nr_snk_pdo = tcpm_copy_pdos(port->snk_pdo, tcpc->config->snk_pdo, - tcpc->config->nr_snk_pdo); - port->nr_snk_vdo = tcpm_copy_vdos(port->snk_vdo, tcpc->config->snk_vdo, - tcpc->config->nr_snk_vdo); - - port->operating_snk_mw = tcpc->config->operating_snk_mw; - if (!tcpc->config->try_role_hw) - port->try_role = tcpc->config->default_role; + + if (!tcpc->config || !tcpc->config->try_role_hw) + port->try_role = port->typec_caps.prefer_role; else port->try_role = TYPEC_NO_PREFERRED_ROLE; - port->typec_caps.prefer_role = tcpc->config->default_role; - port->typec_caps.type = tcpc->config->type; - port->typec_caps.data = tcpc->config->data; + port->typec_caps.fwnode = tcpc->fwnode; port->typec_caps.revision = 0x0120; /* Type-C spec release 1.2 */ port->typec_caps.pd_revision = 0x0300; /* USB-PD spec release 3.0 */ port->typec_caps.dr_set = tcpm_dr_set; @@ -4591,7 +4777,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) port->typec_caps.port_type_set = tcpm_port_type_set; port->partner_desc.identity = &port->partner_ident; - port->port_type = tcpc->config->type; + port->port_type = port->typec_caps.type; port->role_sw = usb_role_switch_get(port->dev); if (IS_ERR(port->role_sw)) { @@ -4609,7 +4795,7 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) goto out_destroy_wq; } - if (tcpc->config->alt_modes) { + if (tcpc->config && tcpc->config->alt_modes) { const struct typec_altmode_desc *paltmode = tcpc->config->alt_modes; i = 0; @@ -4624,6 +4810,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) dev_name(dev), paltmode->svid); break; } + typec_altmode_set_drvdata(alt, port); + alt->ops = &tcpm_altmode_ops; port->port_altmode[i] = alt; i++; paltmode++; diff --git a/drivers/usb/typec/tps6598x.c b/drivers/usb/typec/tps6598x.c index 4b4c8d271b27..c84c8c189e90 100644 --- a/drivers/usb/typec/tps6598x.c +++ b/drivers/usb/typec/tps6598x.c @@ -81,12 +81,21 @@ struct tps6598x { struct typec_capability typec_cap; }; +/* + * Max data bytes for Data1, Data2, and other registers. See ch 1.3.2: + * http://www.ti.com/lit/ug/slvuan1a/slvuan1a.pdf + */ +#define TPS_MAX_LEN 64 + static int tps6598x_block_read(struct tps6598x *tps, u8 reg, void *val, size_t len) { - u8 data[len + 1]; + u8 data[TPS_MAX_LEN + 1]; int ret; + if (WARN_ON(len + 1 > sizeof(data))) + return -EINVAL; + if (!tps->i2c_protocol) return regmap_raw_read(tps->regmap, reg, val, len); diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index c3ddd0f1f449..f101347e3ea3 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -159,10 +159,11 @@ static int skel_flush(struct file *file, fl_owner_t id) static void skel_read_bulk_callback(struct urb *urb) { struct usb_skel *dev; + unsigned long flags; dev = urb->context; - spin_lock(&dev->err_lock); + spin_lock_irqsave(&dev->err_lock, flags); /* sync/async unlink faults aren't errors */ if (urb->status) { if (!(urb->status == -ENOENT || @@ -177,7 +178,7 @@ static void skel_read_bulk_callback(struct urb *urb) dev->bulk_in_filled = urb->actual_length; } dev->ongoing_read = 0; - spin_unlock(&dev->err_lock); + spin_unlock_irqrestore(&dev->err_lock, flags); wake_up_interruptible(&dev->bulk_in_wait); } @@ -331,6 +332,7 @@ exit: static void skel_write_bulk_callback(struct urb *urb) { struct usb_skel *dev; + unsigned long flags; dev = urb->context; @@ -343,9 +345,9 @@ static void skel_write_bulk_callback(struct urb *urb) "%s - nonzero write bulk status received: %d\n", __func__, urb->status); - spin_lock(&dev->err_lock); + spin_lock_irqsave(&dev->err_lock, flags); dev->errors = urb->status; - spin_unlock(&dev->err_lock); + spin_unlock_irqrestore(&dev->err_lock, flags); } /* free up our allocated buffer */ diff --git a/drivers/usb/usbip/vudc_dev.c b/drivers/usb/usbip/vudc_dev.c index 1b9a4f87db59..1634d8698e15 100644 --- a/drivers/usb/usbip/vudc_dev.c +++ b/drivers/usb/usbip/vudc_dev.c @@ -279,12 +279,10 @@ static int vep_disable(struct usb_ep *_ep) static struct usb_request *vep_alloc_request(struct usb_ep *_ep, gfp_t mem_flags) { - struct vep *ep; struct vrequest *req; if (!_ep) return NULL; - ep = to_vep(_ep); req = kzalloc(sizeof(*req), mem_flags); if (!req) diff --git a/drivers/usb/wusbcore/security.c b/drivers/usb/wusbcore/security.c index 33d2f5d7f33b..14ac8c98ac9e 100644 --- a/drivers/usb/wusbcore/security.c +++ b/drivers/usb/wusbcore/security.c @@ -217,7 +217,7 @@ int wusb_dev_sec_add(struct wusbhc *wusbhc, result = usb_get_descriptor(usb_dev, USB_DT_SECURITY, 0, secd, sizeof(*secd)); - if (result < sizeof(*secd)) { + if (result < (int)sizeof(*secd)) { dev_err(dev, "Can't read security descriptor or " "not enough data: %d\n", result); goto out; diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 7fca4e7e556d..01f2f21830c0 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -1918,7 +1918,7 @@ EXPORT_SYMBOL_GPL(wa_urb_enqueue); */ int wa_urb_dequeue(struct wahc *wa, struct urb *urb, int status) { - unsigned long flags, flags2; + unsigned long flags; struct wa_xfer *xfer; struct wa_seg *seg; struct wa_rpipe *rpipe; @@ -1964,10 +1964,10 @@ int wa_urb_dequeue(struct wahc *wa, struct urb *urb, int status) goto out_unlock; } /* Check the delayed list -> if there, release and complete */ - spin_lock_irqsave(&wa->xfer_list_lock, flags2); + spin_lock(&wa->xfer_list_lock); if (!list_empty(&xfer->list_node) && xfer->seg == NULL) goto dequeue_delayed; - spin_unlock_irqrestore(&wa->xfer_list_lock, flags2); + spin_unlock(&wa->xfer_list_lock); if (xfer->seg == NULL) /* still hasn't reached */ goto out_unlock; /* setup(), enqueue_b() completes */ /* Ok, the xfer is in flight already, it's been setup and submitted.*/ @@ -2054,7 +2054,7 @@ out_unlock: dequeue_delayed: list_del_init(&xfer->list_node); - spin_unlock_irqrestore(&wa->xfer_list_lock, flags2); + spin_unlock(&wa->xfer_list_lock); xfer->result = urb->status; spin_unlock_irqrestore(&xfer->lock, flags); wa_xfer_giveback(xfer); |
