diff options
Diffstat (limited to 'drivers/isdn/gigaset/usb-gigaset.c')
| -rw-r--r-- | drivers/isdn/gigaset/usb-gigaset.c | 129 |
1 files changed, 38 insertions, 91 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index 323fc7349dec..0f5aa46cf8f3 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -13,10 +13,6 @@ * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * ===================================================================== - * ToDo: ... - * ===================================================================== - * Version: $Id: usb-gigaset.c,v 1.85.4.18 2006/02/04 18:28:16 hjlipp Exp $ - * ===================================================================== */ #include "gigaset.h" @@ -62,10 +58,6 @@ static struct usb_device_id gigaset_table [] = { MODULE_DEVICE_TABLE(usb, gigaset_table); -/* Get a minor range for your devices from the usb maintainer */ -#define USB_SKEL_MINOR_BASE 200 - - /* * Control requests (empty fields: 00) * @@ -122,29 +114,29 @@ static struct cardstate *cardstate = NULL; /* usb specific object needed to register this driver with the usb subsystem */ static struct usb_driver gigaset_usb_driver = { - .name = GIGASET_MODULENAME, - .probe = gigaset_probe, - .disconnect = gigaset_disconnect, - .id_table = gigaset_table, + .name = GIGASET_MODULENAME, + .probe = gigaset_probe, + .disconnect = gigaset_disconnect, + .id_table = gigaset_table, }; struct usb_cardstate { - struct usb_device *udev; /* save off the usb device pointer */ - struct usb_interface *interface; /* the interface for this device */ - atomic_t busy; /* bulk output in progress */ - - /* Output buffer for commands (M105: and data)*/ - unsigned char *bulk_out_buffer; /* the buffer to send data */ - int bulk_out_size; /* the size of the send buffer */ - __u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */ - struct urb *bulk_out_urb; /* the urb used to transmit data */ - - /* Input buffer for command responses (M105: and data)*/ - int rcvbuf_size; /* the size of the receive buffer */ - struct urb *read_urb; /* the urb used to receive data */ - __u8 int_in_endpointAddr; /* the address of the bulk in endpoint */ - - char bchars[6]; /* req. 0x19 */ + struct usb_device *udev; /* usb device pointer */ + struct usb_interface *interface; /* interface for this device */ + atomic_t busy; /* bulk output in progress */ + + /* Output buffer */ + unsigned char *bulk_out_buffer; /* send buffer */ + int bulk_out_size; /* send buffer size */ + __u8 bulk_out_endpointAddr; /* bulk out endpoint */ + struct urb *bulk_out_urb; /* bulk out urb */ + + /* Input buffer */ + int rcvbuf_size; /* rcv buffer */ + struct urb *read_urb; /* rcv buffer size */ + __u8 int_in_endpointAddr; /* int in endpoint */ + + char bchars[6]; /* request 0x19 */ }; struct usb_bc_state {}; @@ -166,10 +158,11 @@ static int gigaset_set_modem_ctrl(struct cardstate *cs, unsigned old_state, val = tiocm_to_gigaset(new_state); dbg(DEBUG_USBREQ, "set flags 0x%02x with mask 0x%02x", val, mask); + // don't use this in an interrupt/BH r = usb_control_msg(cs->hw.usb->udev, usb_sndctrlpipe(cs->hw.usb->udev, 0), 7, 0x41, (val & 0xff) | ((mask & 0xff) << 8), 0, - NULL, 0, 2000 /*timeout??*/); // don't use this in an interrupt/BH + NULL, 0, 2000 /* timeout? */); if (r < 0) return r; //.. @@ -309,15 +302,12 @@ static int gigaset_close_bchannel(struct bc_state *bcs) return 0; } -//void send_ack_to_LL(void *data); static int write_modem(struct cardstate *cs); static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb); -/* Handling of send queue. If there is already a skb opened, put data to - * the transfer buffer by calling "write_modem". Otherwise take a new skb out of the queue. - * This function will be called by the ISR via "transmit_chars" (USB: B-Channel Bulk callback handler - * via immediate task queue) or by writebuf_from_LL if the LL wants to transmit data. +/* Write tasklet handler: Continue sending current skb, or send command, or + * start sending an skb from the send queue. */ static void gigaset_modem_fill(unsigned long data) { @@ -345,7 +335,8 @@ static void gigaset_modem_fill(unsigned long data) if (send_cb(cs, cb) < 0) { dbg(DEBUG_OUTPUT, "modem_fill: send_cb failed"); - again = 1; /* no callback will be called! */ + again = 1; /* no callback will be + called! */ } } else { /* skbs to send? */ bcs->tx_skb = skb_dequeue(&bcs->squeue); @@ -371,8 +362,7 @@ static void gigaset_modem_fill(unsigned long data) /** * gigaset_read_int_callback * - * It is called if the data was received from the device. This is almost similiar to - * the interrupt service routine in the serial device. + * It is called if the data was received from the device. */ static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) { @@ -381,13 +371,11 @@ static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) struct cardstate *cs; unsigned numbytes; unsigned char *src; - //unsigned long flags; struct inbuf_t *inbuf; IFNULLRET(urb); inbuf = (struct inbuf_t *) urb->context; IFNULLRET(inbuf); - //spin_lock_irqsave(&inbuf->lock, flags); cs = inbuf->cs; IFNULLGOTO(cs, exit); IFNULLGOTO(cardstate, exit); @@ -422,7 +410,6 @@ static void gigaset_read_int_callback(struct urb *urb, struct pt_regs *regs) resubmit = 1; } exit: - //spin_unlock_irqrestore(&inbuf->lock, flags); if (resubmit) { r = usb_submit_urb(urb, SLAB_ATOMIC); if (r) @@ -431,11 +418,7 @@ exit: } -/* This callback routine is called when data was transmitted to a B-Channel. - * Therefore it has to check if there is still data to transmit. This - * happens by calling modem_fill via task queue. - * - */ +/* This callback routine is called when data was transmitted to the device. */ static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) { struct cardstate *cs = (struct cardstate *) urb->context; @@ -448,8 +431,9 @@ static void gigaset_write_bulk_callback(struct urb *urb, struct pt_regs *regs) } #endif if (urb->status) - err("bulk transfer failed (status %d)", -urb->status); /* That's all we can do. Communication problems - are handeled by timeouts or network protocols */ + err("bulk transfer failed (status %d)", -urb->status); + /* That's all we can do. Communication problems + are handeled by timeouts or network protocols */ atomic_set(&cs->hw.usb->busy, 0); tasklet_schedule(&cs->write_tasklet); @@ -503,16 +487,16 @@ static int send_cb(struct cardstate *cs, struct cmdbuf_t *cb) atomic_set(&ucs->busy, 0); err("could not submit urb (error %d).", -status); - cb->len = 0; /* skip urb => remove cb+wakeup in next loop cycle */ + cb->len = 0; /* skip urb => remove cb+wakeup + in next loop cycle */ } } - } while (cb && status); /* bei Fehler naechster Befehl //FIXME: ist das OK? */ + } while (cb && status); /* next command on error */ return status; } -/* Write string into transbuf and send it to modem. - */ +/* Send command to device. */ static int gigaset_write_cmd(struct cardstate *cs, const unsigned char *buf, int len, struct tasklet_struct *wake_tasklet) { @@ -604,7 +588,6 @@ static int gigaset_initbcshw(struct bc_state *bcs) if (!bcs->hw.usb) return 0; - //bcs->hw.usb->trans_flg = READY_TO_TRNSMIT; /* B-Channel ready to transmit */ return 1; } @@ -614,7 +597,6 @@ static void gigaset_reinitbcshw(struct bc_state *bcs) static void gigaset_freecshw(struct cardstate *cs) { - //FIXME tasklet_kill(&cs->write_tasklet); kfree(cs->hw.usb); } @@ -644,19 +626,13 @@ static int gigaset_initcshw(struct cardstate *cs) return 1; } -/* Writes the data of the current open skb into the modem. - * We have to protect against multiple calls until the - * callback handler () is called , due to the fact that we - * are just allowed to send data once to an endpoint. Therefore - * we using "trans_flg" to synchonize ... - */ +/* Send data from current skb to the device. */ static int write_modem(struct cardstate *cs) { int ret; int count; struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ struct usb_cardstate *ucs = cs->hw.usb; - //unsigned long flags; IFNULLRETVAL(bcs->tx_skb, -EINVAL); @@ -720,12 +696,9 @@ static int gigaset_probe(struct usb_interface *interface, struct usb_host_interface *hostif; struct cardstate *cs = NULL; struct usb_cardstate *ucs = NULL; - //struct usb_interface_descriptor *iface_desc; struct usb_endpoint_descriptor *endpoint; - //isdn_ctrl command; int buffer_size; int alt; - //unsigned long flags; info("%s: Check if device matches .. (Vendor: 0x%x, Product: 0x%x)", __func__, le16_to_cpu(udev->descriptor.idVendor), @@ -766,29 +739,6 @@ static int gigaset_probe(struct usb_interface *interface, } ucs = cs->hw.usb; -#if 0 - if (usb_set_configuration(udev, udev->config[0].desc.bConfigurationValue) < 0) { - warn("set_configuration failed"); - goto error; - } - - - if (usb_set_interface(udev, ifnum/*==0*/, alt/*==0*/) < 0) { - warn("usb_set_interface failed, device %d interface %d altsetting %d", - udev->devnum, ifnum, alt); - goto error; - } -#endif - - /* set up the endpoint information */ - /* check out the endpoints */ - /* We will get 2 endpoints: One for sending commands to the device (bulk out) and one to - * poll messages from the device(int in). - * Therefore we will have an almost similiar situation as with our serial port handler. - * If an connection will be established, we will have to create data in/out pipes - * dynamically... - */ - endpoint = &hostif->endpoint[0].desc; buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); @@ -896,18 +846,15 @@ static void gigaset_disconnect(struct usb_interface *interface) tasklet_kill(&cs->write_tasklet); - usb_kill_urb(ucs->bulk_out_urb); /* FIXME: nur, wenn noetig */ - //usb_kill_urb(ucs->urb_cmd_out); /* FIXME: nur, wenn noetig */ + usb_kill_urb(ucs->bulk_out_urb); /* FIXME: only if active? */ kfree(ucs->bulk_out_buffer); if (ucs->bulk_out_urb != NULL) usb_free_urb(ucs->bulk_out_urb); - //if(ucs->urb_cmd_out != NULL) - // usb_free_urb(ucs->urb_cmd_out); kfree(cs->inbuf[0].rcvbuf); if (ucs->read_urb != NULL) usb_free_urb(ucs->read_urb); - ucs->read_urb = ucs->bulk_out_urb/*=ucs->urb_cmd_out*/=NULL; + ucs->read_urb = ucs->bulk_out_urb = NULL; cs->inbuf[0].rcvbuf = ucs->bulk_out_buffer = NULL; gigaset_unassign(cs); |
