diff options
Diffstat (limited to 'drivers/usb/serial/garmin_gps.c')
| -rw-r--r-- | drivers/usb/serial/garmin_gps.c | 400 |
1 files changed, 190 insertions, 210 deletions
diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 8ce5a56a48e..2e663f1afd5 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -33,7 +33,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/atomic.h> #include <linux/usb.h> #include <linux/usb/serial.h> @@ -44,7 +44,7 @@ static int initial_mode = 1; /* debug flag */ -static int debug = 0; +static int debug; #define GARMIN_VENDOR_ID 0x091E @@ -56,7 +56,7 @@ static int debug = 0; #define VERSION_MINOR 31 #define _STR(s) #s -#define _DRIVER_VERSION(a,b) "v" _STR(a) "." _STR(b) +#define _DRIVER_VERSION(a, b) "v" _STR(a) "." _STR(b) #define DRIVER_VERSION _DRIVER_VERSION(VERSION_MAJOR, VERSION_MINOR) #define DRIVER_AUTHOR "hermann kneissel" #define DRIVER_DESC "garmin gps driver" @@ -65,37 +65,37 @@ static int debug = 0; #define EINVPKT 1000 /* invalid packet structure */ -// size of the header of a packet using the usb protocol +/* size of the header of a packet using the usb protocol */ #define GARMIN_PKTHDR_LENGTH 12 -// max. possible size of a packet using the serial protocol -#define MAX_SERIAL_PKT_SIZ (3+255+3) +/* max. possible size of a packet using the serial protocol */ +#define MAX_SERIAL_PKT_SIZ (3 + 255 + 3) -// max. possible size of a packet with worst case stuffing -#define MAX_SERIAL_PKT_SIZ_STUFFED MAX_SERIAL_PKT_SIZ+256 +/* max. possible size of a packet with worst case stuffing */ +#define MAX_SERIAL_PKT_SIZ_STUFFED (MAX_SERIAL_PKT_SIZ + 256) -// size of a buffer able to hold a complete (no stuffing) packet -// (the document protocol does not contain packets with a larger -// size, but in theory a packet may be 64k+12 bytes - if in -// later protocol versions larger packet sizes occur, this value -// should be increased accordingly, so the input buffer is always -// large enough the store a complete packet inclusive header) -#define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ) +/* size of a buffer able to hold a complete (no stuffing) packet + * (the document protocol does not contain packets with a larger + * size, but in theory a packet may be 64k+12 bytes - if in + * later protocol versions larger packet sizes occur, this value + * should be increased accordingly, so the input buffer is always + * large enough the store a complete packet inclusive header) */ +#define GPS_IN_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ) -// size of a buffer able to hold a complete (incl. stuffing) packet -#define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED) +/* size of a buffer able to hold a complete (incl. stuffing) packet */ +#define GPS_OUT_BUFSIZ (GARMIN_PKTHDR_LENGTH+MAX_SERIAL_PKT_SIZ_STUFFED) -// where to place the packet id of a serial packet, so we can -// prepend the usb-packet header without the need to move the -// packets data +/* where to place the packet id of a serial packet, so we can + * prepend the usb-packet header without the need to move the + * packets data */ #define GSP_INITIAL_OFFSET (GARMIN_PKTHDR_LENGTH-2) -// max. size of incoming private packets (header+1 param) +/* max. size of incoming private packets (header+1 param) */ #define PRIVPKTSIZ (GARMIN_PKTHDR_LENGTH+4) #define GARMIN_LAYERID_TRANSPORT 0 #define GARMIN_LAYERID_APPL 20 -// our own layer-id to use for some control mechanisms +/* our own layer-id to use for some control mechanisms */ #define GARMIN_LAYERID_PRIVATE 0x01106E4B #define GARMIN_PKTID_PVT_DATA 51 @@ -103,7 +103,7 @@ static int debug = 0; #define CMND_ABORT_TRANSFER 0 -// packet ids used in private layer +/* packet ids used in private layer */ #define PRIV_PKTID_SET_DEBUG 1 #define PRIV_PKTID_SET_MODE 2 #define PRIV_PKTID_INFO_REQ 3 @@ -121,7 +121,8 @@ static int debug = 0; struct garmin_packet { struct list_head list; int seq; - int size; // the real size of the data array, always > 0 + /* the real size of the data array, always > 0 */ + int size; __u8 data[1]; }; @@ -164,7 +165,7 @@ struct garmin_data { #define MODE_NATIVE 0 #define MODE_GARMIN_SERIAL 1 -// Flags used in garmin_data.flags: +/* Flags used in garmin_data.flags: */ #define FLAGS_SESSION_REPLY_MASK 0x00C0 #define FLAGS_SESSION_REPLY1_SEEN 0x0080 #define FLAGS_SESSION_REPLY2_SEEN 0x0040 @@ -185,7 +186,7 @@ struct garmin_data { /* function prototypes */ -static void gsp_next_packet(struct garmin_data * garmin_data_p); +static void gsp_next_packet(struct garmin_data *garmin_data_p); static int garmin_write_bulk(struct usb_serial_port *port, const unsigned char *buf, int count, int dismiss_ack); @@ -217,12 +218,13 @@ static unsigned char const PRIVATE_REQ[] static struct usb_device_id id_table [] = { - /* the same device id seems to be used by all usb enabled gps devices */ - { USB_DEVICE(GARMIN_VENDOR_ID, 3 ) }, + /* the same device id seems to be used by all + usb enabled GPS devices */ + { USB_DEVICE(GARMIN_VENDOR_ID, 3) }, { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table); +MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver garmin_driver = { .name = "garmin_gps", @@ -233,9 +235,10 @@ static struct usb_driver garmin_driver = { }; -static inline int noResponseFromAppLayer(struct garmin_data * garmin_data_p) +static inline int noResponseFromAppLayer(struct garmin_data *garmin_data_p) { - return atomic_read(&garmin_data_p->req_count) == atomic_read(&garmin_data_p->resp_count); + return atomic_read(&garmin_data_p->req_count) == + atomic_read(&garmin_data_p->resp_count); } @@ -261,10 +264,10 @@ static inline int getDataLength(const __u8 *usbPacket) */ static inline int isAbortTrfCmnd(const unsigned char *buf) { - if (0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ, - sizeof(GARMIN_STOP_TRANSFER_REQ)) || - 0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2, - sizeof(GARMIN_STOP_TRANSFER_REQ_V2))) + if (0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ, + sizeof(GARMIN_STOP_TRANSFER_REQ)) || + 0 == memcmp(buf, GARMIN_STOP_TRANSFER_REQ_V2, + sizeof(GARMIN_STOP_TRANSFER_REQ_V2))) return 1; else return 0; @@ -275,11 +278,11 @@ static inline int isAbortTrfCmnd(const unsigned char *buf) static void send_to_tty(struct usb_serial_port *port, char *data, unsigned int actual_length) { - struct tty_struct *tty = port->tty; + struct tty_struct *tty = port->port.tty; if (tty && actual_length) { - usb_serial_debug_data(debug, &port->dev, + usb_serial_debug_data(debug, &port->dev, __func__, actual_length, data); tty_buffer_request_room(tty, actual_length); @@ -296,7 +299,7 @@ static void send_to_tty(struct usb_serial_port *port, /* * queue a received (usb-)packet for later processing */ -static int pkt_add(struct garmin_data * garmin_data_p, +static int pkt_add(struct garmin_data *garmin_data_p, unsigned char *data, unsigned int data_length) { int state = 0; @@ -307,7 +310,7 @@ static int pkt_add(struct garmin_data * garmin_data_p, /* process only packets containg data ... */ if (data_length) { pkt = kmalloc(sizeof(struct garmin_packet)+data_length, - GFP_ATOMIC); + GFP_ATOMIC); if (pkt == NULL) { dev_err(&garmin_data_p->port->dev, "out of memory\n"); return 0; @@ -325,16 +328,15 @@ static int pkt_add(struct garmin_data * garmin_data_p, /* in serial mode, if someone is waiting for data from the device, iconvert and send the next packet to tty. */ - if (result && (state == STATE_GSP_WAIT_DATA)) { + if (result && (state == STATE_GSP_WAIT_DATA)) gsp_next_packet(garmin_data_p); - } } return result; } /* get the next pending packet */ -static struct garmin_packet *pkt_pop(struct garmin_data * garmin_data_p) +static struct garmin_packet *pkt_pop(struct garmin_data *garmin_data_p) { unsigned long flags; struct garmin_packet *result = NULL; @@ -350,7 +352,7 @@ static struct garmin_packet *pkt_pop(struct garmin_data * garmin_data_p) /* free up all queued data */ -static void pkt_clear(struct garmin_data * garmin_data_p) +static void pkt_clear(struct garmin_data *garmin_data_p) { unsigned long flags; struct garmin_packet *result = NULL; @@ -372,7 +374,7 @@ static void pkt_clear(struct garmin_data * garmin_data_p) ******************************************************************************/ /* send an ack packet back to the tty */ -static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id) +static int gsp_send_ack(struct garmin_data *garmin_data_p, __u8 pkt_id) { __u8 pkt[10]; __u8 cksum = 0; @@ -391,9 +393,8 @@ static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id) *ptr++ = pkt_id; cksum += pkt_id; - if (pkt_id == DLE) { + if (pkt_id == DLE) *ptr++ = DLE; - } *ptr++ = 0; *ptr++ = 0xFF & (-cksum); @@ -415,12 +416,12 @@ static int gsp_send_ack(struct garmin_data * garmin_data_p, __u8 pkt_id) * at GSP_INITIAL_OFFSET. * * count - number of bytes in the input buffer including space reserved for - * the usb header: GSP_INITIAL_OFFSET + number of bytes in packet + * the usb header: GSP_INITIAL_OFFSET + number of bytes in packet * (including pkt-id, data-length a. cksum) */ -static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count) +static int gsp_rec_packet(struct garmin_data *garmin_data_p, int count) { - const __u8* recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET; + const __u8 *recpkt = garmin_data_p->inbuffer+GSP_INITIAL_OFFSET; __le32 *usbdata = (__le32 *) garmin_data_p->inbuffer; int cksum = 0; @@ -440,8 +441,8 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count) cksum += *recpkt++; cksum += *recpkt++; - // sanity check, remove after test ... - if ((__u8*)&(usbdata[3]) != recpkt) { + /* sanity check, remove after test ... */ + if ((__u8 *)&(usbdata[3]) != recpkt) { dbg("%s - ptr mismatch %p - %p", __func__, &(usbdata[4]), recpkt); return -EINVPKT; @@ -462,7 +463,7 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count) usbdata[1] = __cpu_to_le32(pktid); usbdata[2] = __cpu_to_le32(size); - garmin_write_bulk (garmin_data_p->port, garmin_data_p->inbuffer, + garmin_write_bulk(garmin_data_p->port, garmin_data_p->inbuffer, GARMIN_PKTHDR_LENGTH+size, 0); /* if this was an abort-transfer command, flush all @@ -495,7 +496,7 @@ static int gsp_rec_packet(struct garmin_data * garmin_data_p, int count) * if the input is an abort command, drop all queued data. */ -static int gsp_receive(struct garmin_data * garmin_data_p, +static int gsp_receive(struct garmin_data *garmin_data_p, const unsigned char *buf, int count) { unsigned long flags; @@ -504,10 +505,11 @@ static int gsp_receive(struct garmin_data * garmin_data_p, int i = 0; __u8 *dest; int size; - // dleSeen: set if last byte read was a DLE + /* dleSeen: set if last byte read was a DLE */ int dleSeen; - // skip: if set, skip incoming data until possible start of - // new packet + /* skip: if set, skip incoming data until possible start of + * new packet + */ int skip; __u8 data; @@ -521,14 +523,13 @@ static int gsp_receive(struct garmin_data * garmin_data_p, dbg("%s - dle=%d skip=%d size=%d count=%d", __func__, dleSeen, skip, size, count); - if (size == 0) { + if (size == 0) size = GSP_INITIAL_OFFSET; - } while (offs < count) { data = *(buf+offs); - offs ++; + offs++; if (data == DLE) { if (skip) { /* start of a new pkt */ @@ -554,9 +555,8 @@ static int gsp_receive(struct garmin_data * garmin_data_p, ack_or_nak_seen = NAK; dbg("NAK packet complete."); } else { - dbg("packet complete " - "- id=0x%X.", - 0xFF & data); + dbg("packet complete - id=0x%X.", + 0xFF & data); gsp_rec_packet(garmin_data_p, size); } @@ -589,7 +589,7 @@ static int gsp_receive(struct garmin_data * garmin_data_p, garmin_data_p->insize = size; - // copy flags back to structure + /* copy flags back to structure */ if (skip) garmin_data_p->flags |= FLAGS_GSP_SKIP; else @@ -600,16 +600,13 @@ static int gsp_receive(struct garmin_data * garmin_data_p, else garmin_data_p->flags &= ~FLAGS_GSP_DLESEEN; - if (ack_or_nak_seen) { + if (ack_or_nak_seen) garmin_data_p->state = STATE_GSP_WAIT_DATA; - } spin_unlock_irqrestore(&garmin_data_p->lock, flags); - if (ack_or_nak_seen) { + if (ack_or_nak_seen) gsp_next_packet(garmin_data_p); - } - return count; } @@ -623,7 +620,7 @@ static int gsp_receive(struct garmin_data * garmin_data_p, * * return <0 on error, 0 if packet is incomplete or > 0 if packet was sent */ -static int gsp_send(struct garmin_data * garmin_data_p, +static int gsp_send(struct garmin_data *garmin_data_p, const unsigned char *buf, int count) { const unsigned char *src; @@ -631,11 +628,11 @@ static int gsp_send(struct garmin_data * garmin_data_p, int pktid = 0; int datalen = 0; int cksum = 0; - int i=0; + int i = 0; int k; dbg("%s - state %d - %d bytes.", __func__, - garmin_data_p->state, count); + garmin_data_p->state, count); k = garmin_data_p->outsize; if ((k+count) > GPS_OUT_BUFSIZ) { @@ -650,7 +647,7 @@ static int gsp_send(struct garmin_data * garmin_data_p, if (k >= GARMIN_PKTHDR_LENGTH) { pktid = getPacketId(garmin_data_p->outbuffer); - datalen= getDataLength(garmin_data_p->outbuffer); + datalen = getDataLength(garmin_data_p->outbuffer); i = GARMIN_PKTHDR_LENGTH + datalen; if (k < i) return 0; @@ -658,19 +655,18 @@ static int gsp_send(struct garmin_data * garmin_data_p, return 0; } - dbg("%s - %d bytes in buffer, %d bytes in pkt.", __func__, - k, i); + dbg("%s - %d bytes in buffer, %d bytes in pkt.", __func__, k, i); /* garmin_data_p->outbuffer now contains a complete packet */ usb_serial_debug_data(debug, &garmin_data_p->port->dev, - __func__, k, garmin_data_p->outbuffer); + __func__, k, garmin_data_p->outbuffer); garmin_data_p->outsize = 0; if (GARMIN_LAYERID_APPL != getLayerId(garmin_data_p->outbuffer)) { - dbg("not an application packet (%d)", - getLayerId(garmin_data_p->outbuffer)); + dbg("not an application packet (%d)", + getLayerId(garmin_data_p->outbuffer)); return -1; } @@ -688,14 +684,14 @@ static int gsp_send(struct garmin_data * garmin_data_p, k = 0; src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; - for (i=0; i<datalen; i++) { + for (i = 0; i < datalen; i++) { if (*src++ == DLE) k++; } src = garmin_data_p->outbuffer+GARMIN_PKTHDR_LENGTH; if (k > (GARMIN_PKTHDR_LENGTH-2)) { - /* can't add stuffing DLEs in place, move data to end + /* can't add stuffing DLEs in place, move data to end of buffer ... */ dst = garmin_data_p->outbuffer+GPS_OUT_BUFSIZ-datalen; memcpy(dst, src, datalen); @@ -712,14 +708,14 @@ static int gsp_send(struct garmin_data * garmin_data_p, if (datalen == DLE) *dst++ = DLE; - for (i=0; i<datalen; i++) { + for (i = 0; i < datalen; i++) { __u8 c = *src++; *dst++ = c; cksum += c; if (c == DLE) *dst++ = DLE; } - + cksum = 0xFF & -cksum; *dst++ = cksum; if (cksum == DLE) @@ -744,7 +740,7 @@ static int gsp_send(struct garmin_data * garmin_data_p, /* * Process the next pending data packet - if there is one */ -static void gsp_next_packet(struct garmin_data * garmin_data_p) +static void gsp_next_packet(struct garmin_data *garmin_data_p) { struct garmin_packet *pkt = NULL; @@ -774,17 +770,17 @@ static void gsp_next_packet(struct garmin_data * garmin_data_p) * buf contains the data read, it may span more than one packet * or even incomplete packets */ -static int nat_receive(struct garmin_data * garmin_data_p, +static int nat_receive(struct garmin_data *garmin_data_p, const unsigned char *buf, int count) { unsigned long flags; - __u8 * dest; + __u8 *dest; int offs = 0; int result = count; int len; while (offs < count) { - // if buffer contains header, copy rest of data + /* if buffer contains header, copy rest of data */ if (garmin_data_p->insize >= GARMIN_PKTHDR_LENGTH) len = GARMIN_PKTHDR_LENGTH +getDataLength(garmin_data_p->inbuffer); @@ -792,9 +788,9 @@ static int nat_receive(struct garmin_data * garmin_data_p, len = GARMIN_PKTHDR_LENGTH; if (len >= GPS_IN_BUFSIZ) { - /* seem to be an invalid packet, ignore rest of input */ - dbg("%s - packet size too large: %d", - __func__, len); + /* seems to be an invalid packet, ignore rest + of input */ + dbg("%s - packet size too large: %d", __func__, len); garmin_data_p->insize = 0; count = 0; result = -EINVPKT; @@ -804,7 +800,7 @@ static int nat_receive(struct garmin_data * garmin_data_p, len = (count-offs); if (len > 0) { dest = garmin_data_p->inbuffer - +garmin_data_p->insize; + + garmin_data_p->insize; memcpy(dest, buf+offs, len); garmin_data_p->insize += len; offs += len; @@ -816,17 +812,19 @@ static int nat_receive(struct garmin_data * garmin_data_p, len = GARMIN_PKTHDR_LENGTH+ getDataLength(garmin_data_p->inbuffer); if (garmin_data_p->insize >= len) { - garmin_write_bulk (garmin_data_p->port, - garmin_data_p->inbuffer, - len, 0); + garmin_write_bulk(garmin_data_p->port, + garmin_data_p->inbuffer, + len, 0); garmin_data_p->insize = 0; /* if this was an abort-transfer command, flush all queued data. */ if (isAbortTrfCmnd(garmin_data_p->inbuffer)) { - spin_lock_irqsave(&garmin_data_p->lock, flags); + spin_lock_irqsave(&garmin_data_p->lock, + flags); garmin_data_p->flags |= FLAGS_DROP_DATA; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); + spin_unlock_irqrestore( + &garmin_data_p->lock, flags); pkt_clear(garmin_data_p); } } @@ -842,7 +840,7 @@ static int nat_receive(struct garmin_data * garmin_data_p, static void priv_status_resp(struct usb_serial_port *port) { - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); __le32 *pkt = (__le32 *)garmin_data_p->privpkt; pkt[0] = __cpu_to_le32(GARMIN_LAYERID_PRIVATE); @@ -852,7 +850,7 @@ static void priv_status_resp(struct usb_serial_port *port) pkt[4] = __cpu_to_le32(garmin_data_p->mode); pkt[5] = __cpu_to_le32(garmin_data_p->serial_num); - send_to_tty(port, (__u8*)pkt, 6*4); + send_to_tty(port, (__u8 *)pkt, 6 * 4); } @@ -864,7 +862,7 @@ static int process_resetdev_request(struct usb_serial_port *port) { unsigned long flags; int status; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->flags &= ~(CLEAR_HALT_REQUIRED); @@ -872,8 +870,8 @@ static int process_resetdev_request(struct usb_serial_port *port) garmin_data_p->serial_num = 0; spin_unlock_irqrestore(&garmin_data_p->lock, flags); - usb_kill_urb (port->interrupt_in_urb); - dbg("%s - usb_reset_device", __func__ ); + usb_kill_urb(port->interrupt_in_urb); + dbg("%s - usb_reset_device", __func__); status = usb_reset_device(port->serial->dev); if (status) dbg("%s - usb_reset_device failed: %d", @@ -886,7 +884,7 @@ static int process_resetdev_request(struct usb_serial_port *port) /* * clear all cached data */ -static int garmin_clear(struct garmin_data * garmin_data_p) +static int garmin_clear(struct garmin_data *garmin_data_p) { unsigned long flags; int status = 0; @@ -896,8 +894,7 @@ static int garmin_clear(struct garmin_data * garmin_data_p) if (port != NULL && atomic_read(&garmin_data_p->resp_count)) { /* send a terminate command */ status = garmin_write_bulk(port, GARMIN_STOP_TRANSFER_REQ, - sizeof(GARMIN_STOP_TRANSFER_REQ), - 1); + sizeof(GARMIN_STOP_TRANSFER_REQ), 1); } /* flush all queued data */ @@ -920,28 +917,26 @@ static int garmin_init_session(struct usb_serial_port *port) { unsigned long flags; struct usb_serial *serial = port->serial; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); int status = 0; if (status == 0) { - usb_kill_urb (port->interrupt_in_urb); + usb_kill_urb(port->interrupt_in_urb); dbg("%s - adding interrupt input", __func__); port->interrupt_in_urb->dev = serial->dev; status = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (status) dev_err(&serial->dev->dev, - "%s - failed submitting interrupt urb," - " error %d\n", - __func__, status); + "%s - failed submitting interrupt urb, error %d\n", + __func__, status); } if (status == 0) { dbg("%s - starting session ...", __func__); garmin_data_p->state = STATE_ACTIVE; status = garmin_write_bulk(port, GARMIN_START_SESSION_REQ, - sizeof(GARMIN_START_SESSION_REQ), - 0); + sizeof(GARMIN_START_SESSION_REQ), 0); if (status >= 0) { @@ -951,14 +946,14 @@ static int garmin_init_session(struct usb_serial_port *port) /* not needed, but the win32 driver does it too ... */ status = garmin_write_bulk(port, - GARMIN_START_SESSION_REQ2, - sizeof(GARMIN_START_SESSION_REQ2), - 0); + GARMIN_START_SESSION_REQ2, + sizeof(GARMIN_START_SESSION_REQ2), 0); if (status >= 0) { status = 0; spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->ignorePkts++; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); + spin_unlock_irqrestore(&garmin_data_p->lock, + flags); } } } @@ -970,11 +965,12 @@ static int garmin_init_session(struct usb_serial_port *port) -static int garmin_open (struct usb_serial_port *port, struct file *filp) +static int garmin_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { unsigned long flags; int status = 0; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); dbg("%s - port %d", __func__, port->number); @@ -983,8 +979,8 @@ static int garmin_open (struct usb_serial_port *port, struct file *filp) * through, otherwise it is scheduled, and with high data rates (like * with OHCI) data can get lost. */ - if (port->tty) - port->tty->low_latency = 1; + if (tty) + tty->low_latency = 1; spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->mode = initial_mode; @@ -995,23 +991,22 @@ static int garmin_open (struct usb_serial_port *port, struct file *filp) spin_unlock_irqrestore(&garmin_data_p->lock, flags); /* shutdown any bulk reads that might be going on */ - usb_kill_urb (port->write_urb); - usb_kill_urb (port->read_urb); + usb_kill_urb(port->write_urb); + usb_kill_urb(port->read_urb); - if (garmin_data_p->state == STATE_RESET) { + if (garmin_data_p->state == STATE_RESET) status = garmin_init_session(port); - } garmin_data_p->state = STATE_ACTIVE; - return status; } -static void garmin_close (struct usb_serial_port *port, struct file * filp) +static void garmin_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { struct usb_serial *serial = port->serial; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); dbg("%s - port %d - mode=%d state=%d flags=0x%X", __func__, port->number, garmin_data_p->mode, @@ -1025,8 +1020,8 @@ static void garmin_close (struct usb_serial_port *port, struct file * filp) garmin_clear(garmin_data_p); /* shutdown our urbs */ - usb_kill_urb (port->read_urb); - usb_kill_urb (port->write_urb); + usb_kill_urb(port->read_urb); + usb_kill_urb(port->write_urb); if (!port->serial->disconnected) { if (noResponseFromAppLayer(garmin_data_p) || @@ -1042,21 +1037,22 @@ static void garmin_close (struct usb_serial_port *port, struct file * filp) mutex_unlock(&port->serial->disc_mutex); } - -static void garmin_write_bulk_callback (struct urb *urb) +static void garmin_write_bulk_callback(struct urb *urb) { unsigned long flags; struct usb_serial_port *port = urb->context; int status = urb->status; if (port) { - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = + usb_get_serial_port_data(port); dbg("%s - port %d", __func__, port->number); if (GARMIN_LAYERID_APPL == getLayerId(urb->transfer_buffer) && (garmin_data_p->mode == MODE_GARMIN_SERIAL)) { - gsp_send_ack(garmin_data_p, ((__u8 *)urb->transfer_buffer)[4]); + gsp_send_ack(garmin_data_p, + ((__u8 *)urb->transfer_buffer)[4]); } if (status) { @@ -1070,20 +1066,21 @@ static void garmin_write_bulk_callback (struct urb *urb) usb_serial_port_softint(port); } - /* Ignore errors that resulted from garmin_write_bulk with dismiss_ack=1 */ + /* Ignore errors that resulted from garmin_write_bulk with + dismiss_ack = 1 */ /* free up the transfer buffer, as usb_free_urb() does not do this */ - kfree (urb->transfer_buffer); + kfree(urb->transfer_buffer); } -static int garmin_write_bulk (struct usb_serial_port *port, +static int garmin_write_bulk(struct usb_serial_port *port, const unsigned char *buf, int count, int dismiss_ack) { unsigned long flags; struct usb_serial *serial = port->serial; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); struct urb *urb; unsigned char *buffer; int status; @@ -1095,7 +1092,7 @@ static int garmin_write_bulk (struct usb_serial_port *port, garmin_data_p->flags &= ~FLAGS_DROP_DATA; spin_unlock_irqrestore(&garmin_data_p->lock, flags); - buffer = kmalloc (count, GFP_ATOMIC); + buffer = kmalloc(count, GFP_ATOMIC); if (!buffer) { dev_err(&port->dev, "out of memory\n"); return -ENOMEM; @@ -1104,17 +1101,17 @@ static int garmin_write_bulk (struct usb_serial_port *port, urb = usb_alloc_urb(0, GFP_ATOMIC); if (!urb) { dev_err(&port->dev, "no more free urbs\n"); - kfree (buffer); + kfree(buffer); return -ENOMEM; } - memcpy (buffer, buf, count); + memcpy(buffer, buf, count); usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); - usb_fill_bulk_urb (urb, serial->dev, - usb_sndbulkpipe (serial->dev, - port->bulk_out_endpointAddress), + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, + port->bulk_out_endpointAddress), buffer, count, garmin_write_bulk_callback, dismiss_ack ? NULL : port); @@ -1132,33 +1129,29 @@ static int garmin_write_bulk (struct usb_serial_port *port, status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { dev_err(&port->dev, - "%s - usb_submit_urb(write bulk) " - "failed with status = %d\n", + "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status); count = status; } /* we are done with this urb, so let the host driver * really free it when it is finished with it */ - usb_free_urb (urb); + usb_free_urb(urb); return count; } - - -static int garmin_write (struct usb_serial_port *port, - const unsigned char *buf, int count) +static int garmin_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count) { int pktid, pktsiz, len; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); __le32 *privpkt = (__le32 *)garmin_data_p->privpkt; usb_serial_debug_data(debug, &port->dev, __func__, count, buf); /* check for our private packets */ if (count >= GARMIN_PKTHDR_LENGTH) { - len = PRIVPKTSIZ; if (count < len) len = count; @@ -1169,15 +1162,16 @@ static int garmin_write (struct usb_serial_port *port, pktid = getPacketId(garmin_data_p->privpkt); if (count == (GARMIN_PKTHDR_LENGTH+pktsiz) - && GARMIN_LAYERID_PRIVATE == getLayerId(garmin_data_p->privpkt)) { + && GARMIN_LAYERID_PRIVATE == + getLayerId(garmin_data_p->privpkt)) { dbg("%s - processing private request %d", __func__, pktid); - // drop all unfinished transfers + /* drop all unfinished transfers */ garmin_clear(garmin_data_p); - switch(pktid) { + switch (pktid) { case PRIV_PKTID_SET_DEBUG: if (pktsiz != 4) @@ -1226,44 +1220,31 @@ static int garmin_write (struct usb_serial_port *port, } -static int garmin_write_room (struct usb_serial_port *port) +static int garmin_write_room(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; /* * Report back the bytes currently available in the output buffer. */ - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); return GPS_OUT_BUFSIZ-garmin_data_p->outsize; } -static int garmin_chars_in_buffer (struct usb_serial_port *port) -{ - /* - * Report back the number of bytes currently in our input buffer. - * Will this lock up the driver - the buffer contains an incomplete - * package which will not be written to the device until it - * has been completed ? - */ - //struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); - //return garmin_data_p->insize; - return 0; -} - - -static void garmin_read_process(struct garmin_data * garmin_data_p, +static void garmin_read_process(struct garmin_data *garmin_data_p, unsigned char *data, unsigned data_length) { if (garmin_data_p->flags & FLAGS_DROP_DATA) { /* abort-transfer cmd is actice */ dbg("%s - pkt dropped", __func__); } else if (garmin_data_p->state != STATE_DISCONNECTED && - garmin_data_p->state != STATE_RESET ) { + garmin_data_p->state != STATE_RESET) { /* remember any appl.layer packets, so we know if a reset is required or not when closing the device */ if (0 == memcmp(data, GARMIN_APP_LAYER_REPLY, - sizeof(GARMIN_APP_LAYER_REPLY))) { + sizeof(GARMIN_APP_LAYER_REPLY))) { atomic_inc(&garmin_data_p->resp_count); } @@ -1273,9 +1254,8 @@ static void garmin_read_process(struct garmin_data * garmin_data_p, if (garmin_data_p->flags & FLAGS_QUEUING) { pkt_add(garmin_data_p, data, data_length); } else if (garmin_data_p->mode == MODE_GARMIN_SERIAL) { - if (getLayerId(data) == GARMIN_LAYERID_APPL) { + if (getLayerId(data) == GARMIN_LAYERID_APPL) pkt_add(garmin_data_p, data, data_length); - } } else { send_to_tty(garmin_data_p->port, data, data_length); } @@ -1283,12 +1263,12 @@ static void garmin_read_process(struct garmin_data * garmin_data_p, } -static void garmin_read_bulk_callback (struct urb *urb) +static void garmin_read_bulk_callback(struct urb *urb) { unsigned long flags; struct usb_serial_port *port = urb->context; struct usb_serial *serial = port->serial; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; int status = urb->status; int retval; @@ -1306,7 +1286,7 @@ static void garmin_read_bulk_callback (struct urb *urb) return; } - usb_serial_debug_data(debug, &port->dev, + usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); garmin_read_process(garmin_data_p, data, urb->actual_length); @@ -1340,13 +1320,13 @@ static void garmin_read_bulk_callback (struct urb *urb) } -static void garmin_read_int_callback (struct urb *urb) +static void garmin_read_int_callback(struct urb *urb) { unsigned long flags; int retval; struct usb_serial_port *port = urb->context; struct usb_serial *serial = port->serial; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; int status = urb->status; @@ -1372,30 +1352,31 @@ static void garmin_read_int_callback (struct urb *urb) if (urb->actual_length == sizeof(GARMIN_BULK_IN_AVAIL_REPLY) && 0 == memcmp(data, GARMIN_BULK_IN_AVAIL_REPLY, - sizeof(GARMIN_BULK_IN_AVAIL_REPLY))) { + sizeof(GARMIN_BULK_IN_AVAIL_REPLY))) { dbg("%s - bulk data available.", __func__); if (0 == (garmin_data_p->flags & FLAGS_BULK_IN_ACTIVE)) { /* bulk data available */ - usb_fill_bulk_urb (port->read_urb, serial->dev, - usb_rcvbulkpipe (serial->dev, - port->bulk_in_endpointAddress), + usb_fill_bulk_urb(port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length, garmin_read_bulk_callback, port); retval = usb_submit_urb(port->read_urb, GFP_ATOMIC); if (retval) { dev_err(&port->dev, - "%s - failed submitting read urb, error %d\n", - __func__, retval); + "%s - failed submitting read urb, error %d\n", + __func__, retval); } else { spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->flags |= FLAGS_BULK_IN_ACTIVE; /* do not send this packet to the user */ garmin_data_p->ignorePkts = 1; - spin_unlock_irqrestore(&garmin_data_p->lock, flags); + spin_unlock_irqrestore(&garmin_data_p->lock, + flags); } } else { /* bulk-in transfer still active */ @@ -1406,15 +1387,15 @@ static void garmin_read_int_callback (struct urb *urb) } else if (urb->actual_length == (4+sizeof(GARMIN_START_SESSION_REPLY)) && 0 == memcmp(data, GARMIN_START_SESSION_REPLY, - sizeof(GARMIN_START_SESSION_REPLY))) { + sizeof(GARMIN_START_SESSION_REPLY))) { spin_lock_irqsave(&garmin_data_p->lock, flags); garmin_data_p->flags |= FLAGS_SESSION_REPLY1_SEEN; spin_unlock_irqrestore(&garmin_data_p->lock, flags); /* save the serial number */ - garmin_data_p->serial_num - = __le32_to_cpup((__le32*)(data+GARMIN_PKTHDR_LENGTH)); + garmin_data_p->serial_num = __le32_to_cpup( + (__le32 *)(data+GARMIN_PKTHDR_LENGTH)); dbg("%s - start-of-session reply seen - serial %u.", __func__, garmin_data_p->serial_num); @@ -1433,7 +1414,7 @@ static void garmin_read_int_callback (struct urb *urb) } port->interrupt_in_urb->dev = port->serial->dev; - retval = usb_submit_urb (urb, GFP_ATOMIC); + retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n", @@ -1446,7 +1427,7 @@ static void garmin_read_int_callback (struct urb *urb) * and then sets a timer to call itself again until all queued data * is sent. */ -static int garmin_flush_queue(struct garmin_data * garmin_data_p) +static int garmin_flush_queue(struct garmin_data *garmin_data_p) { unsigned long flags; struct garmin_packet *pkt; @@ -1468,10 +1449,11 @@ static int garmin_flush_queue(struct garmin_data * garmin_data_p) } -static void garmin_throttle (struct usb_serial_port *port) +static void garmin_throttle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); unsigned long flags; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); dbg("%s - port %d", __func__, port->number); /* set flag, data received will be put into a queue @@ -1482,10 +1464,11 @@ static void garmin_throttle (struct usb_serial_port *port) } -static void garmin_unthrottle (struct usb_serial_port *port) +static void garmin_unthrottle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); unsigned long flags; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); int status; dbg("%s - port %d", __func__, port->number); @@ -1507,8 +1490,6 @@ static void garmin_unthrottle (struct usb_serial_port *port) } } - - /* * The timer is currently only used to send queued packets to * the tty in cases where the protocol provides no own handshaking @@ -1526,11 +1507,11 @@ static void timeout_handler(unsigned long data) -static int garmin_attach (struct usb_serial *serial) +static int garmin_attach(struct usb_serial *serial) { int status = 0; struct usb_serial_port *port = serial->port[0]; - struct garmin_data * garmin_data_p = NULL; + struct garmin_data *garmin_data_p = NULL; dbg("%s", __func__); @@ -1542,7 +1523,7 @@ static int garmin_attach (struct usb_serial *serial) init_timer(&garmin_data_p->timer); spin_lock_init(&garmin_data_p->lock); INIT_LIST_HEAD(&garmin_data_p->pktlist); - //garmin_data_p->timer.expires = jiffies + session_timeout; + /* garmin_data_p->timer.expires = jiffies + session_timeout; */ garmin_data_p->timer.data = (unsigned long)garmin_data_p; garmin_data_p->timer.function = timeout_handler; garmin_data_p->port = port; @@ -1556,16 +1537,16 @@ static int garmin_attach (struct usb_serial *serial) } -static void garmin_shutdown (struct usb_serial *serial) +static void garmin_shutdown(struct usb_serial *serial) { struct usb_serial_port *port = serial->port[0]; - struct garmin_data * garmin_data_p = usb_get_serial_port_data(port); + struct garmin_data *garmin_data_p = usb_get_serial_port_data(port); dbg("%s", __func__); - usb_kill_urb (port->interrupt_in_urb); + usb_kill_urb(port->interrupt_in_urb); del_timer_sync(&garmin_data_p->timer); - kfree (garmin_data_p); + kfree(garmin_data_p); usb_set_serial_port_data(port, NULL); } @@ -1588,7 +1569,6 @@ static struct usb_serial_driver garmin_device = { .shutdown = garmin_shutdown, .write = garmin_write, .write_room = garmin_write_room, - .chars_in_buffer = garmin_chars_in_buffer, .write_bulk_callback = garmin_write_bulk_callback, .read_bulk_callback = garmin_read_bulk_callback, .read_int_callback = garmin_read_int_callback, @@ -1596,7 +1576,7 @@ static struct usb_serial_driver garmin_device = { -static int __init garmin_init (void) +static int __init garmin_init(void) { int retval; @@ -1616,10 +1596,10 @@ failed_garmin_register: } -static void __exit garmin_exit (void) +static void __exit garmin_exit(void) { - usb_deregister (&garmin_driver); - usb_serial_deregister (&garmin_device); + usb_deregister(&garmin_driver); + usb_serial_deregister(&garmin_device); } @@ -1628,8 +1608,8 @@ static void __exit garmin_exit (void) module_init(garmin_init); module_exit(garmin_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IWUSR | S_IRUGO); |