diff options
| -rw-r--r-- | drivers/hid/hid-core.c | 24 | ||||
| -rw-r--r-- | drivers/hid/hid-input.c | 20 | ||||
| -rw-r--r-- | drivers/hid/hidraw.c | 6 | ||||
| -rw-r--r-- | drivers/hid/usbhid/hid-core.c | 330 | ||||
| -rw-r--r-- | include/linux/hid.h | 104 | ||||
| -rw-r--r-- | net/bluetooth/hidp/core.c | 191 | ||||
| -rw-r--r-- | net/bluetooth/hidp/hidp.h | 2 |
7 files changed, 438 insertions, 239 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 017fc20167d4..3dacbcd7e41c 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -648,6 +648,9 @@ int hid_parse_report(struct hid_device *device, __u8 *start, hid_parser_reserved }; + if (device->driver->report_fixup) + device->driver->report_fixup(device, start, size); + device->rdesc = kmalloc(size, GFP_KERNEL); if (device->rdesc == NULL) return -ENOMEM; @@ -1152,15 +1155,20 @@ static int hid_device_probe(struct device *dev) int ret = 0; if (!hdev->driver) { - if (hdrv->probe) { - ret = -ENODEV; + id = hid_match_id(hdev, hdrv->id_table); + if (id == NULL) + return -ENODEV; - id = hid_match_id(hdev, hdrv->id_table); - if (id) - ret = hdrv->probe(hdev, id); + hdev->driver = hdrv; + if (hdrv->probe) { + ret = hdrv->probe(hdev, id); + } else { /* default probe */ + ret = hid_parse(hdev); + if (!ret) + ret = hid_hw_start(hdev); } - if (!ret) - hdev->driver = hdrv; + if (ret) + hdev->driver = NULL; } return ret; } @@ -1173,6 +1181,8 @@ static int hid_device_remove(struct device *dev) if (hdrv) { if (hdrv->remove) hdrv->remove(hdev); + else /* default remove */ + hid_hw_stop(hdev); hdev->driver = NULL; } diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c index 4ae5603804e7..9fa7239ab310 100644 --- a/drivers/hid/hid-input.c +++ b/drivers/hid/hid-input.c @@ -390,6 +390,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel if (ret) goto mapped; + if (device->driver->input_mapping) { + int ret = device->driver->input_mapping(device, hidinput, field, + usage, &bit, &max); + if (ret > 0) + goto mapped; + if (ret < 0) + goto ignore; + } + switch (usage->hid & HID_USAGE_PAGE) { case HID_UP_UNDEFINED: @@ -755,6 +764,10 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel } mapped: + if (device->driver->input_mapped && device->driver->input_mapped(device, + hidinput, field, usage, &bit, &max) < 0) + goto ignore; + if (device->quirks & HID_QUIRK_MIGHTYMOUSE) { if (usage->hid == HID_GD_Z) map_rel(REL_HWHEEL); @@ -961,14 +974,14 @@ static int hidinput_open(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); - return hid->hid_open(hid); + return hid->ll_driver->open(hid); } static void hidinput_close(struct input_dev *dev) { struct hid_device *hid = input_get_drvdata(dev); - hid->hid_close(hid); + hid->ll_driver->close(hid); } /* @@ -1019,7 +1032,8 @@ int hidinput_connect(struct hid_device *hid) } input_set_drvdata(input_dev, hid); - input_dev->event = hid->hidinput_input_event; + input_dev->event = + hid->ll_driver->hidinput_input_event; input_dev->open = hidinput_open; input_dev->close = hidinput_close; input_dev->setkeycode = hidinput_setkeycode; diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c index c40f0403edaf..4be240e74d4f 100644 --- a/drivers/hid/hidraw.c +++ b/drivers/hid/hidraw.c @@ -181,7 +181,7 @@ static int hidraw_open(struct inode *inode, struct file *file) dev = hidraw_table[minor]; if (!dev->open++) - dev->hid->hid_open(dev->hid); + dev->hid->ll_driver->open(dev->hid); out_unlock: spin_unlock(&minors_lock); @@ -207,7 +207,7 @@ static int hidraw_release(struct inode * inode, struct file * file) dev = hidraw_table[minor]; if (!dev->open--) { if (list->hidraw->exist) - dev->hid->hid_close(dev->hid); + dev->hid->ll_driver->close(dev->hid); else kfree(list->hidraw); } @@ -367,7 +367,7 @@ void hidraw_disconnect(struct hid_device *hid) device_destroy(hidraw_class, MKDEV(hidraw_major, hidraw->minor)); if (hidraw->open) { - hid->hid_close(hid); + hid->ll_driver->close(hid); wake_up_interruptible(&hidraw->wait); } else { kfree(hidraw); diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c index 5955d05ae542..d2a3461909a3 100644 --- a/drivers/hid/usbhid/hid-core.c +++ b/drivers/hid/usbhid/hid-core.c @@ -701,17 +701,84 @@ static void hid_fixup_sony_ps3_controller(struct usb_device *dev, int ifnum) kfree(buf); } -static struct hid_device *usb_hid_configure(struct usb_interface *intf) +static int usbhid_start_finish(struct hid_device *hid) { + struct usb_interface *intf = to_usb_interface(hid->dev.parent); + char path[64], *type; + unsigned int i; + + usbhid_init_reports(hid); + hid_dump_device(hid); + if (hid->quirks & HID_QUIRK_RESET_LEDS) + usbhid_set_leds(hid); + + if (!hidinput_connect(hid)) + hid->claimed |= HID_CLAIMED_INPUT; + if (!hiddev_connect(hid)) + hid->claimed |= HID_CLAIMED_HIDDEV; + if (!hidraw_connect(hid)) + hid->claimed |= HID_CLAIMED_HIDRAW; + + if (!hid->claimed) { + printk(KERN_ERR "HID device claimed by neither input, hiddev " + "nor hidraw\n"); + return -ENODEV; + } + + if ((hid->claimed & HID_CLAIMED_INPUT)) + hid_ff_init(hid); + + if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER) + hid_fixup_sony_ps3_controller(interface_to_usbdev(intf), + intf->cur_altsetting->desc.bInterfaceNumber); + + printk(KERN_INFO); + + if (hid->claimed & HID_CLAIMED_INPUT) + printk("input"); + if ((hid->claimed & HID_CLAIMED_INPUT) && + ((hid->claimed & HID_CLAIMED_HIDDEV) || + hid->claimed & HID_CLAIMED_HIDRAW)) + printk(","); + if (hid->claimed & HID_CLAIMED_HIDDEV) + printk("hiddev%d", hid->minor); + if ((hid->claimed & HID_CLAIMED_INPUT) && + (hid->claimed & HID_CLAIMED_HIDDEV) && + (hid->claimed & HID_CLAIMED_HIDRAW)) + printk(","); + if (hid->claimed & HID_CLAIMED_HIDRAW) + printk("hidraw%d", ((struct hidraw *)hid->hidraw)->minor); + + type = "Device"; + for (i = 0; i < hid->maxcollection; i++) { + if (hid->collection[i].type == HID_COLLECTION_APPLICATION && + (hid->collection[i].usage & HID_USAGE_PAGE) == + HID_UP_GENDESK && + (hid->collection[i].usage & 0xffff) < + ARRAY_SIZE(hid_types)) { + type = hid_types[hid->collection[i].usage & 0xffff]; + break; + } + } + + usb_make_path(interface_to_usbdev(intf), path, 63); + + printk(": USB HID v%x.%02x %s [%s] on %s\n", + hid->version >> 8, hid->version & 0xff, type, hid->name, path); + + return 0; +} + +static int usbhid_parse(struct hid_device *hid) +{ + struct usb_interface *intf = to_usb_interface(hid->dev.parent); struct usb_host_interface *interface = intf->cur_altsetting; struct usb_device *dev = interface_to_usbdev (intf); struct hid_descriptor *hdesc; - struct hid_device *hid; u32 quirks = 0; - unsigned int insize = 0, rsize = 0; + unsigned int rsize = 0; char *rdesc; - int n, len; - struct usbhid_device *usbhid; + int ret, n; quirks = usbhid_lookup_quirk(le16_to_cpu(dev->descriptor.idVendor), le16_to_cpu(dev->descriptor.idProduct)); @@ -725,40 +792,44 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) } if (quirks & HID_QUIRK_IGNORE) - return NULL; + return -ENODEV; if ((quirks & HID_QUIRK_IGNORE_MOUSE) && (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE)) - return NULL; - + return -ENODEV; if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && (!interface->desc.bNumEndpoints || usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) { dbg_hid("class descriptor not present\n"); - return NULL; + return -ENODEV; } + hid->version = le16_to_cpu(hdesc->bcdHID); + hid->country = hdesc->bCountryCode; + for (n = 0; n < hdesc->bNumDescriptors; n++) if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT) rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength); if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) { dbg_hid("weird size of report descriptor (%u)\n", rsize); - return NULL; + return -EINVAL; } if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) { dbg_hid("couldn't allocate rdesc memory\n"); - return NULL; + return -ENOMEM; } hid_set_idle(dev, interface->desc.bInterfaceNumber, 0, 0); - if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) { + ret = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, + HID_DT_REPORT, rdesc, rsize); + if (ret < 0) { dbg_hid("reading report descriptor failed\n"); kfree(rdesc); - return NULL; + goto err; } usbhid_fixup_report_descriptor(le16_to_cpu(dev->descriptor.idVendor), @@ -770,24 +841,36 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) dbg_hid_line(" %02x", (unsigned char) rdesc[n]); dbg_hid_line("\n"); - hid = hid_allocate_device(); - if (IS_ERR(hid)) { - kfree(rdesc); - return NULL; - } - - if (hid_parse_report(hid, rdesc, n)) { + ret = hid_parse_report(hid, rdesc, rsize); + kfree(rdesc); + if (ret) { dbg_hid("parsing report descriptor failed\n"); - hid_destroy_device(hid); - kfree(rdesc); - return NULL; + goto err; } - kfree(rdesc); hid->quirks = quirks; - if (!(usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL))) - goto fail_no_usbhid; + return 0; +err: + return ret; +} + +static int usbhid_start(struct hid_device *hid) +{ + struct usb_interface *intf = to_usb_interface(hid->dev.parent); + struct usb_host_interface *interface = intf->cur_altsetting; + struct usb_device *dev = interface_to_usbdev(intf); + struct usbhid_device *usbhid; + unsigned int n, insize = 0; + int ret; + + WARN_ON(hid->driver_data); + + usbhid = kzalloc(sizeof(struct usbhid_device), GFP_KERNEL); + if (usbhid == NULL) { + ret = -ENOMEM; + goto err; + } hid->driver_data = usbhid; usbhid->hid = hid; @@ -805,27 +888,12 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) if (insize > HID_MAX_BUFFER_SIZE) insize = HID_MAX_BUFFER_SIZE; - if (hid_alloc_buffers(dev, hid)) + if (hid_alloc_buffers(dev, hid)) { + ret = -ENOMEM; goto fail; - - hid->name[0] = 0; - - if (dev->manufacturer) - strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); - - if (dev->product) { - if (dev->manufacturer) - strlcat(hid->name, " ", sizeof(hid->name)); - strlcat(hid->name, dev->product, sizeof(hid->name)); } - if (!strlen(hid->name)) - snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", - le16_to_cpu(dev->descriptor.idVendor), - le16_to_cpu(dev->descriptor.idProduct)); - for (n = 0; n < interface->desc.bNumEndpoints; n++) { - struct usb_endpoint_descriptor *endpoint; int pipe; int interval; @@ -837,7 +905,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) interval = endpoint->bInterval; /* Some vendors give fullspeed interval on highspeed devides */ - if (quirks & HID_QUIRK_FULLSPEED_INTERVAL && + if (hid->quirks & HID_QUIRK_FULLSPEED_INTERVAL && dev->speed == USB_SPEED_HIGH) { interval = fls(endpoint->bInterval*8); printk(KERN_INFO "%s: Fixing fullspeed to highspeed interval: %d -> %d\n", @@ -848,6 +916,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) if (hid->collection->usage == HID_GD_MOUSE && hid_mousepoll_interval > 0) interval = hid_mousepoll_interval; + ret = -ENOMEM; if (usb_endpoint_dir_in(endpoint)) { if (usbhid->urbin) continue; @@ -873,6 +942,7 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) if (!usbhid->urbin) { err_hid("couldn't find an input interrupt endpoint"); + ret = -ENODEV; goto fail; } @@ -884,44 +954,26 @@ static struct hid_device *usb_hid_configure(struct usb_interface *intf) spin_lock_init(&usbhid->outlock); spin_lock_init(&usbhid->ctrllock); - hid->version = le16_to_cpu(hdesc->bcdHID); - hid->country = hdesc->bCountryCode; - hid->dev.parent = &intf->dev; usbhid->intf = intf; usbhid->ifnum = interface->desc.bInterfaceNumber; - hid->bus = BUS_USB; - hid->vendor = le16_to_cpu(dev->descriptor.idVendor); - hid->product = le16_to_cpu(dev->descriptor.idProduct); - - usb_make_path(dev, hid->phys, sizeof(hid->phys)); - strlcat(hid->phys, "/input", sizeof(hid->phys)); - len = strlen(hid->phys); - if (len < sizeof(hid->phys) - 1) - snprintf(hid->phys + len, sizeof(hid->phys) - len, - "%d", intf->altsetting[0].desc.bInterfaceNumber); - - if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) - hid->uniq[0] = 0; - usbhid->urbctrl = usb_alloc_urb(0, GFP_KERNEL); - if (!usbhid->urbctrl) + if (!usbhid->urbctrl) { + ret = -ENOMEM; goto fail; + } usb_fill_control_urb(usbhid->urbctrl, dev, 0, (void *) usbhid->cr, usbhid->ctrlbuf, 1, hid_ctrl, hid); usbhid->urbctrl->setup_dma = usbhid->cr_dma; usbhid->urbctrl->transfer_dma = usbhid->ctrlbuf_dma; usbhid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP | URB_NO_SETUP_DMA_MAP); - hid->hidinput_input_event = usb_hidinput_input_event; - hid->hid_open = usbhid_open; - hid->hid_close = usbhid_close; -#ifdef CONFIG_USB_HIDDEV - hid->hiddev_hid_event = hiddev_hid_event; - hid->hiddev_report_event = hiddev_report_event; -#endif - hid->hid_output_raw_report = usbhid_output_raw_report; - return hid; + + ret = usbhid_start_finish(hid); + if (ret) + goto fail; + + return 0; fail: usb_free_urb(usbhid->urbin); @@ -929,24 +981,18 @@ fail: usb_free_urb(usbhid->urbctrl); hid_free_buffers(dev, hid); kfree(usbhid); -fail_no_usbhid: - hid_destroy_device(hid); - - return NULL; +err: + return ret; } -static void hid_disconnect(struct usb_interface *intf) +static void usbhid_stop(struct hid_device *hid) { - struct hid_device *hid = usb_get_intfdata (intf); - struct usbhid_device *usbhid; + struct usbhid_device *usbhid = hid->driver_data; - if (!hid) + if (WARN_ON(!usbhid)) return; - usbhid = hid->driver_data; - spin_lock_irq(&usbhid->inlock); /* Sync with error handler */ - usb_set_intfdata(intf, NULL); set_bit(HID_DISCONNECTED, &usbhid->iofl); spin_unlock_irq(&usbhid->inlock); usb_kill_urb(usbhid->urbin); @@ -963,93 +1009,99 @@ static void hid_disconnect(struct usb_interface *intf) if (hid->claimed & HID_CLAIMED_HIDRAW) hidraw_disconnect(hid); + hid->claimed = 0; + usb_free_urb(usbhid->urbin); usb_free_urb(usbhid->urbctrl); usb_free_urb(usbhid->urbout); hid_free_buffers(hid_to_usb_dev(hid), hid); kfree(usbhid); - hid_destroy_device(hid); + hid->driver_data = NULL; } +static struct hid_ll_driver usb_hid_driver = { + .parse = usbhid_parse, + .start = usbhid_start, + .stop = usbhid_stop, + .open = usbhid_open, + .close = usbhid_close, + .hidinput_input_event = usb_hidinput_input_event, +}; + static int hid_probe(struct usb_interface *intf, const struct usb_device_id *id) { + struct usb_device *dev = interface_to_usbdev(intf); struct hid_device *hid; - char path[64]; - int i, ret; - char *c; + size_t len; + int ret; dbg_hid("HID probe called for ifnum %d\n", intf->altsetting->desc.bInterfaceNumber); - if (!(hid = usb_hid_configure(intf))) - return -ENODEV; - - usbhid_init_reports(hid); - hid_dump_device(hid); - if (hid->quirks & HID_QUIRK_RESET_LEDS) - usbhid_set_leds(hid); - - if (!hidinput_connect(hid)) - hid->claimed |= HID_CLAIMED_INPUT; - if (!hiddev_connect(hid)) - hid->claimed |= HID_CLAIMED_HIDDEV; - if (!hidraw_connect(hid)) - hid->claimed |= HID_CLAIMED_HIDRAW; + hid = hid_allocate_device(); + if (IS_ERR(hid)) + return PTR_ERR(hid); usb_set_intfdata(intf, hid); + hid->ll_driver = &usb_hid_driver; + hid->hid_output_raw_report = usbhid_output_raw_report; +#ifdef CONFIG_USB_HIDDEV + hid->hiddev_hid_event = hiddev_hid_event; + hid->hiddev_report_event = hiddev_report_event; +#endif + hid->dev.parent = &intf->dev; + hid->bus = BUS_USB; + hid->vendor = le16_to_cpu(dev->descriptor.idVendor); + hid->product = le16_to_cpu(dev->descriptor.idProduct); + hid->name[0] = 0; - if (!hid->claimed) { - printk ("HID device claimed by neither input, hiddev nor hidraw\n"); - hid_disconnect(intf); - return -ENODEV; - } - - if ((hid->claimed & HID_CLAIMED_INPUT)) - hid_ff_init(hid); - - if (hid->quirks & HID_QUIRK_SONY_PS3_CONTROLLER) - hid_fixup_sony_ps3_controller(interface_to_usbdev(intf), - intf->cur_altsetting->desc.bInterfaceNumber); - - printk(KERN_INFO); - - if (hid->claimed & HID_CLAIMED_INPUT) - printk("input"); - if ((hid->claimed & HID_CLAIMED_INPUT) && ((hid->claimed & HID_CLAIMED_HIDDEV) || - hid->claimed & HID_CLAIMED_HIDRAW)) - printk(","); - if (hid->claimed & HID_CLAIMED_HIDDEV) - printk("hiddev%d", hid->minor); - if ((hid->claimed & HID_CLAIMED_INPUT) && (hid->claimed & HID_CLAIMED_HIDDEV) && - (hid->claimed & HID_CLAIMED_HIDRAW)) - printk(","); - if (hid->claimed & HID_CLAIMED_HIDRAW) - printk("hidraw%d", ((struct hidraw*)hid->hidraw)->minor); + if (dev->manufacturer) + strlcpy(hid->name, dev->manufacturer, sizeof(hid->name)); - c = "Device"; - for (i = 0; i < hid->maxcollection; i++) { - if (hid->collection[i].type == HID_COLLECTION_APPLICATION && - (hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK && - (hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) { - c = hid_types[hid->collection[i].usage & 0xffff]; - break; - } + if (dev->product) { + if (dev->manufacturer) + strlcat(hid->name, " ", sizeof(hid->name)); + strlcat(hid->name, dev->product, sizeof(hid->name)); } - usb_make_path(interface_to_usbdev(intf), path, 63); + if (!strlen(hid->name)) + snprintf(hid->name, sizeof(hid->name), "HID %04x:%04x", + le16_to_cpu(dev->descriptor.idVendor), + le16_to_cpu(dev->descriptor.idProduct)); - printk(": USB HID v%x.%02x %s [%s] on %s\n", - hid->version >> 8, hid->version & 0xff, c, hid->name, path); + usb_make_path(dev, hid->phys, sizeof(hid->phys)); + strlcat(hid->phys, "/input", sizeof(hid->phys)); + len = strlen(hid->phys); + if (len < sizeof(hid->phys) - 1) + snprintf(hid->phys + len, sizeof(hid->phys) - len, + "%d", intf->altsetting[0].desc.bInterfaceNumber); + + if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0) + hid->uniq[0] = 0; ret = hid_add_device(hid); if (ret) { dev_err(&intf->dev, "can't add hid device: %d\n", ret); - hid_disconnect(intf); + goto err; } + + return 0; +err: + hid_destroy_device(hid); return ret; } +static void hid_disconnect(struct usb_interface *intf) +{ + struct hid_device *hid = usb_get_intfdata(intf); + + if (WARN_ON(!hid)) + return; + + hid_destroy_device(hid); +} + static int hid_suspend(struct usb_interface *intf, pm_message_t message) { struct hid_device *hid = usb_get_intfdata (intf); diff --git a/include/linux/hid.h b/include/linux/hid.h index c4bea0eda85b..ac2584fe65c5 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -419,6 +419,7 @@ struct hid_control_fifo { #define HID_CLAIMED_HIDRAW 4 #define HID_STAT_ADDED 1 +#define HID_STAT_PARSED 2 #define HID_CTRL_RUNNING 1 #define HID_OUT_RUNNING 2 @@ -435,6 +436,7 @@ struct hid_input { }; struct hid_driver; +struct hid_ll_driver; struct hid_device { /* device report descriptor */ __u8 *rdesc; @@ -452,6 +454,7 @@ struct hid_device { /* device report descriptor */ struct device dev; /* device */ struct hid_driver *driver; + struct hid_ll_driver *ll_driver; unsigned int status; /* see STAT flags above */ unsigned claimed; /* Claimed by hidinput, hiddev? */ @@ -471,11 +474,6 @@ struct hid_device { /* device report descriptor */ __s32 delayed_value; /* For A4 Tech mice hwheel quirk */ - /* device-specific function pointers */ - int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int); - int (*hid_open) (struct hid_device *); - void (*hid_close) (struct hid_device *); - /* hiddev event handler */ void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, struct hid_usage *, __s32); @@ -561,9 +559,22 @@ struct hid_usage_id { * @raw_event: if report in report_table, this hook is called (NULL means nop) * @usage_table: on which events to call event (NULL means all) * @event: if usage in usage_table, this hook is called (NULL means nop) + * @report_fixup: called before report descriptor parsing (NULL means nop) + * @input_mapping: invoked on input registering before mapping an usage + * @input_mapped: invoked on input registering after mapping an usage * * raw_event and event should return 0 on no action performed, 1 when no * further processing should be done and negative on error + * + * input_mapping shall return a negative value to completely ignore this usage + * (e.g. doubled or invalid usage), zero to continue with parsing of this + * usage by generic code (no special handling needed) or positive to skip + * generic parsing (needed special handling which was done in the hook already) + * input_mapped shall return negative to inform the layer that this usage + * should not be considered for further processing or zero to notify that + * no processing was performed and should be done in a generic manner + * Both these functions may be NULL which means the same behavior as returning + * zero from them. */ struct hid_driver { char *name; @@ -578,10 +589,43 @@ struct hid_driver { const struct hid_usage_id *usage_table; int (*event)(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value); + + void (*report_fixup)(struct hid_device *hdev, __u8 *buf, + unsigned int size); + + int (*input_mapping)(struct hid_device *hdev, + struct hid_input *hidinput, struct hid_field *field, + struct hid_usage *usage, unsigned long **bit, int *max); + int (*input_mapped)(struct hid_device *hdev, + struct hid_input *hidinput, struct hid_field *field, + struct hid_usage *usage, unsigned long **bit, int *max); /* private: */ struct device_driver driver; }; +/** + * hid_ll_driver - low level driver callbacks + * @start: called on probe to start the device + * @stop: called on remove + * @open: called by input layer on open + * @close: called by input layer on close + * @hidinput_input_event: event input event (e.g. ff or leds) + * @parse: this method is called only once to parse the device data, + * shouldn't allocate anything to not leak memory + */ +struct hid_ll_driver { + int (*start)(struct hid_device *hdev); + void (*stop)(struct hid_device *hdev); + + int (*open)(struct hid_device *hdev); + void (*close)(struct hid_device *hdev); + + int (*hidinput_input_event) (struct input_dev *idev, unsigned int type, + unsigned int code, int value); + + int (*parse)(struct hid_device *hdev); +}; + /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ /* We ignore a few input applications that are not widely used */ #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || (a == 0x000d0002)) @@ -618,6 +662,56 @@ void hid_output_report(struct hid_report *report, __u8 *data); struct hid_device *hid_allocate_device(void); int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size); +/** + * hid_parse - parse HW reports + * + * @hdev: hid device + * + * Call this from probe after you set up the device (if needed). Your + * report_fixup will be called (if non-NULL) after reading raw report from + * device before passing it to hid layer for real parsing. + */ +static inline int __must_check hid_parse(struct hid_device *hdev) +{ + int ret; + + if (hdev->status & HID_STAT_PARSED) + return 0; + + ret = hdev->ll_driver->parse(hdev); + if (!ret) + hdev->status |= HID_STAT_PARSED; + + return ret; +} + +/** + * hid_hw_start - start underlaying HW + * + * @hdev: hid device + * + * Call this in probe function *after* hid_parse. This will setup HW buffers + * and start the device (if not deffered to device open). hid_hw_stop must be + * called if this was successfull. + */ +static inline int __must_check hid_hw_start(struct hid_device *hdev) +{ + return hdev->ll_driver->start(hdev); +} + +/** + * hid_hw_stop - stop underlaying HW + * + * @hdev: hid device + * + * This is usually called from remove function or from probe when something + * failed and hid_hw_start was called already. + */ +static inline void hid_hw_stop(struct hid_device *hdev) +{ + hdev->ll_driver->stop(hdev); +} + void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size, int interrupt); diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c index 56a51f91591a..d8029cfcd452 100644 --- a/net/bluetooth/hidp/core.c +++ b/net/bluetooth/hidp/core.c @@ -623,9 +623,15 @@ static struct device *hidp_get_device(struct hidp_session *session) static int hidp_setup_input(struct hidp_session *session, struct hidp_connadd_req *req) { - struct input_dev *input = session->input; + struct input_dev *input; int i; + input = input_allocate_device(); + if (!input) + return -ENOMEM; + + session->input = input; + input_set_drvdata(input, session); input->name = "Bluetooth HID Boot Protocol Device"; @@ -698,55 +704,117 @@ static void hidp_setup_quirks(struct hid_device *hid) hid->quirks = hidp_blacklist[n].quirks; } +static int hidp_parse(struct hid_device *hid) +{ + struct hidp_session *session = hid->driver_data; + struct hidp_connadd_req *req = session->req; + unsigned char *buf; + int ret; + + buf = kmalloc(req->rd_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, req->rd_data, req->rd_size)) { + kfree(buf); + return -EFAULT; + } + + ret = hid_parse_report(session->hid, buf, req->rd_size); + + kfree(buf); + + if (ret) + return ret; + + session->req = NULL; + + hidp_setup_quirks(hid); + return 0; +} + +static int hidp_start(struct hid_device *hid) +{ + struct hidp_session *session = hid->driver_data; + struct hid_report *report; + + list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT]. + report_list, list) + hidp_send_report(session, report); + + list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT]. + report_list, list) + hidp_send_report(session, report); + + if (hidinput_connect(hid) == 0) + hid->claimed |= HID_CLAIMED_INPUT; + + return 0; +} + +static void hidp_stop(struct hid_device *hid) +{ + struct hidp_session *session = hid->driver_data; + + skb_queue_purge(&session->ctrl_transmit); + skb_queue_purge(&session->intr_transmit); + + if (hid->claimed & HID_CLAIMED_INPUT) + hidinput_disconnect(hid); + hid->claimed = 0; +} + +static struct hid_ll_driver hidp_hid_driver = { + .parse = hidp_parse, + .start = hidp_start, + .stop = hidp_stop, + .open = hidp_open, + .close = hidp_close, + .hidinput_input_event = hidp_hidinput_event, +}; + static int hidp_setup_hid(struct hidp_session *session, struct hidp_connadd_req *req) { - struct hid_device *hid = session->hid; - struct hid_report *report; + struct hid_device *hid; bdaddr_t src, dst; int ret; - baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); - baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); + hid = hid_allocate_device(); + if (IS_ERR(hid)) { + ret = PTR_ERR(session->hid); + goto err; + } + session->hid = hid; + session->req = req; hid->driver_data = session; - hid->country = req->country; + baswap(&src, &bt_sk(session->ctrl_sock->sk)->src); + baswap(&dst, &bt_sk(session->ctrl_sock->sk)->dst); hid->bus = BUS_BLUETOOTH; hid->vendor = req->vendor; hid->product = req->product; hid->version = req->version; + hid->country = req->country; strncpy(hid->name, req->name, 128); strncpy(hid->phys, batostr(&src), 64); strncpy(hid->uniq, batostr(&dst), 64); hid->dev.parent = hidp_get_device(session); - - hid->hid_open = hidp_open; - hid->hid_close = hidp_close; - - hid->hidinput_input_event = hidp_hidinput_event; - - hidp_setup_quirks(hid); - - list_for_each_entry(report, &hid->report_enum[HID_INPUT_REPORT].report_list, list) - hidp_send_report(session, report); - - list_for_each_entry(report, &hid->report_enum[HID_FEATURE_REPORT].report_list, list) - hidp_send_report(session, report); - - if (hidinput_connect(hid) == 0) - hid->claimed |= HID_CLAIMED_INPUT; + hid->ll_driver = &hidp_hid_driver; ret = hid_add_device(hid); - if (ret) { - if (hid->claimed & HID_CLAIMED_INPUT) - hidinput_disconnect(hid); - skb_queue_purge(&session->intr_transmit); - } + if (ret) + goto err_hid; + return 0; +err_hid: + hid_destroy_device(hid); + session->hid = NULL; +err: return ret; } @@ -767,46 +835,6 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, BT_DBG("rd_data %p rd_size %d", req->rd_data, req->rd_size); - if (req->rd_size > 0) { - unsigned char *buf = kmalloc(req->rd_size, GFP_KERNEL); - - if (!buf) { - kfree(session); - return -ENOMEM; - } - - if (copy_from_user(buf, req->rd_data, req->rd_size)) { - kfree(buf); - kfree(session); - return -EFAULT; - } - - session->hid = hid_allocate_device(); - if (IS_ERR(session->hid)) { - kfree(buf); - kfree(session); - return PTR_ERR(session->hid); - } - - err = hid_parse_report(session->hid, buf, req->rd_size); - - kfree(buf); - - if (err) { - hid_destroy_device(session->hid); - kfree(session); - return -EINVAL; - } - } - - if (!session->hid) { - session->input = input_allocate_device(); - if (!session->input) { - kfree(session); - return -ENOMEM; - } - } - down_write(&hidp_session_sem); s = __hidp_get_session(&bt_sk(ctrl_sock->sk)->dst); @@ -834,16 +862,16 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock, session->flags = req->flags & (1 << HIDP_BLUETOOTH_VENDOR_ID); session->idle_to = req->idle_to; - if (session->input) { - err = hidp_setup_input(session, req); - if (err < 0) - goto failed; - } - - if (session->hid) { + if (req->rd_size > 0) { err = hidp_setup_hid(session, req); if (err) - goto failed; + goto err_skb; + } + + if (!session->hid) { + err = hidp_setup_input(session, req); + if (err < 0) + goto err_skb; } __hidp_link_session(session); @@ -871,16 +899,15 @@ unlink: __hidp_unlink_session(session); - if (session->input) { + if (session->input) input_unregister_device(session->input); - session->input = NULL; /* don't try to free it here */ - } - -failed: - up_write(&hidp_session_sem); - if (session->hid) hid_destroy_device(session->hid); +err_skb: + skb_queue_purge(&session->ctrl_transmit); + skb_queue_purge(&session->intr_transmit); +failed: + up_write(&hidp_session_sem); input_free_device(session->input); kfree(session); diff --git a/net/bluetooth/hidp/hidp.h b/net/bluetooth/hidp/hidp.h index 343fb0566b3e..e503c89057ad 100644 --- a/net/bluetooth/hidp/hidp.h +++ b/net/bluetooth/hidp/hidp.h @@ -151,6 +151,8 @@ struct hidp_session { struct sk_buff_head ctrl_transmit; struct sk_buff_head intr_transmit; + + struct hidp_connadd_req *req; }; static inline void hidp_schedule(struct hidp_session *session) |
