2 * Shared Transport Line discipline driver Core
3 * Init Manager module responsible for GPIO control
4 * and firmware download
5 * Copyright (C) 2009-2010 Texas Instruments
6 * Author: Pavan Savoy <pavan_savoy@ti.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #define pr_fmt(fmt) "(stk) :" fmt
24 #include <linux/platform_device.h>
25 #include <linux/jiffies.h>
26 #include <linux/firmware.h>
27 #include <linux/delay.h>
28 #include <linux/wait.h>
29 #include <linux/gpio.h>
30 #include <linux/debugfs.h>
31 #include <linux/seq_file.h>
32 #include <linux/sched.h>
33 #include <linux/rfkill.h>
35 /* understand BT events for fw response */
36 #include <net/bluetooth/bluetooth.h>
37 #include <net/bluetooth/hci_core.h>
38 #include <net/bluetooth/hci.h>
40 #include <linux/ti_wilink_st.h>
43 static int kim_probe(struct platform_device
*pdev
);
44 static int kim_remove(struct platform_device
*pdev
);
46 /* KIM platform device driver structure */
47 static struct platform_driver kim_platform_driver
= {
50 /* TODO: ST driver power management during suspend/resume ?
53 .suspend
= kim_suspend
,
62 static int kim_toggle_radio(void*, bool);
63 static const struct rfkill_ops kim_rfkill_ops
= {
64 .set_block
= kim_toggle_radio
,
67 /* strings to be used for rfkill entries and by
68 * ST Core to be used for sysfs debug entry
70 #define PROTO_ENTRY(type, name) name
71 const unsigned char *protocol_names
[] = {
72 PROTO_ENTRY(ST_BT
, "Bluetooth"),
73 PROTO_ENTRY(ST_FM
, "FM"),
74 PROTO_ENTRY(ST_GPS
, "GPS"),
77 #define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
78 static struct platform_device
*st_kim_devices
[MAX_ST_DEVICES
];
80 /**********************************************************************/
81 /* internal functions */
84 * st_get_plat_device -
85 * function which returns the reference to the platform device
86 * requested by id. As of now only 1 such device exists (id=0)
87 * the context requesting for reference can get the id to be
88 * requested by a. The protocol driver which is registering or
89 * b. the tty device which is opened.
91 static struct platform_device
*st_get_plat_device(int id
)
93 return st_kim_devices
[id
];
97 * validate_firmware_response -
98 * function to return whether the firmware response was proper
99 * in case of error don't complete so that waiting for proper
102 void validate_firmware_response(struct kim_data_s
*kim_gdata
)
104 struct sk_buff
*skb
= kim_gdata
->rx_skb
;
105 if (unlikely(skb
->data
[5] != 0)) {
106 pr_err("no proper response during fw download");
107 pr_err("data6 %x", skb
->data
[5]);
108 return; /* keep waiting for the proper response */
110 /* becos of all the script being downloaded */
111 complete_all(&kim_gdata
->kim_rcvd
);
115 /* check for data len received inside kim_int_recv
116 * most often hit the last case to update state to waiting for data
118 static inline int kim_check_data_len(struct kim_data_s
*kim_gdata
, int len
)
120 register int room
= skb_tailroom(kim_gdata
->rx_skb
);
122 pr_debug("len %d room %d", len
, room
);
125 validate_firmware_response(kim_gdata
);
126 } else if (len
> room
) {
127 /* Received packet's payload length is larger.
128 * We can't accommodate it in created skb.
130 pr_err("Data length is too large len %d room %d", len
,
132 kfree_skb(kim_gdata
->rx_skb
);
134 /* Packet header has non-zero payload length and
135 * we have enough space in created skb. Lets read
137 kim_gdata
->rx_state
= ST_BT_W4_DATA
;
138 kim_gdata
->rx_count
= len
;
142 /* Change ST LL state to continue to process next
144 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
145 kim_gdata
->rx_skb
= NULL
;
146 kim_gdata
->rx_count
= 0;
152 * kim_int_recv - receive function called during firmware download
153 * firmware download responses on different UART drivers
154 * have been observed to come in bursts of different
155 * tty_receive and hence the logic
157 void kim_int_recv(struct kim_data_s
*kim_gdata
,
158 const unsigned char *data
, long count
)
160 const unsigned char *ptr
;
161 struct hci_event_hdr
*eh
;
162 int len
= 0, type
= 0;
164 pr_debug("%s", __func__
);
165 /* Decode received bytes here */
167 if (unlikely(ptr
== NULL
)) {
168 pr_err(" received null from TTY ");
173 if (kim_gdata
->rx_count
) {
174 len
= min_t(unsigned int, kim_gdata
->rx_count
, count
);
175 memcpy(skb_put(kim_gdata
->rx_skb
, len
), ptr
, len
);
176 kim_gdata
->rx_count
-= len
;
180 if (kim_gdata
->rx_count
)
183 /* Check ST RX state machine , where are we? */
184 switch (kim_gdata
->rx_state
) {
185 /* Waiting for complete packet ? */
187 pr_debug("Complete pkt received");
188 validate_firmware_response(kim_gdata
);
189 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
190 kim_gdata
->rx_skb
= NULL
;
192 /* Waiting for Bluetooth event header ? */
193 case ST_BT_W4_EVENT_HDR
:
194 eh
= (struct hci_event_hdr
*)kim_gdata
->
196 pr_debug("Event header: evt 0x%2.2x"
197 "plen %d", eh
->evt
, eh
->plen
);
198 kim_check_data_len(kim_gdata
, eh
->plen
);
200 } /* end of switch */
201 } /* end of if rx_state */
203 /* Bluetooth event packet? */
205 pr_info("Event packet");
206 kim_gdata
->rx_state
= ST_BT_W4_EVENT_HDR
;
207 kim_gdata
->rx_count
= HCI_EVENT_HDR_SIZE
;
208 type
= HCI_EVENT_PKT
;
211 pr_info("unknown packet");
219 bt_skb_alloc(HCI_MAX_FRAME_SIZE
, GFP_ATOMIC
);
220 if (!kim_gdata
->rx_skb
) {
221 pr_err("can't allocate mem for new packet");
222 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
223 kim_gdata
->rx_count
= 0;
226 bt_cb(kim_gdata
->rx_skb
)->pkt_type
= type
;
228 pr_info("done %s", __func__
);
232 static long read_local_version(struct kim_data_s
*kim_gdata
, char *bts_scr_name
)
234 unsigned short version
= 0, chip
= 0, min_ver
= 0, maj_ver
= 0;
235 const char read_ver_cmd
[] = { 0x01, 0x01, 0x10, 0x00 };
237 pr_debug("%s", __func__
);
239 INIT_COMPLETION(kim_gdata
->kim_rcvd
);
240 if (4 != st_int_write(kim_gdata
->core_data
, read_ver_cmd
, 4)) {
241 pr_err("kim: couldn't write 4 bytes");
245 if (!wait_for_completion_timeout
246 (&kim_gdata
->kim_rcvd
, msecs_to_jiffies(CMD_RESP_TIME
))) {
247 pr_err(" waiting for ver info- timed out ");
252 MAKEWORD(kim_gdata
->resp_buffer
[13],
253 kim_gdata
->resp_buffer
[14]);
254 chip
= (version
& 0x7C00) >> 10;
255 min_ver
= (version
& 0x007F);
256 maj_ver
= (version
& 0x0380) >> 7;
258 if (version
& 0x8000)
261 sprintf(bts_scr_name
, "TIInit_%d.%d.%d.bts", chip
, maj_ver
, min_ver
);
263 /* to be accessed later via sysfs entry */
264 kim_gdata
->version
.full
= version
;
265 kim_gdata
->version
.chip
= chip
;
266 kim_gdata
->version
.maj_ver
= maj_ver
;
267 kim_gdata
->version
.min_ver
= min_ver
;
269 pr_info("%s", bts_scr_name
);
274 * download_firmware -
275 * internal function which parses through the .bts firmware
276 * script file intreprets SEND, DELAY actions only as of now
278 static long download_firmware(struct kim_data_s
*kim_gdata
)
282 unsigned char *ptr
= NULL
;
283 unsigned char *action_ptr
= NULL
;
284 unsigned char bts_scr_name
[30] = { 0 }; /* 30 char long bts scr name? */
286 err
= read_local_version(kim_gdata
, bts_scr_name
);
288 pr_err("kim: failed to read local ver");
292 request_firmware(&kim_gdata
->fw_entry
, bts_scr_name
,
293 &kim_gdata
->kim_pdev
->dev
);
294 if (unlikely((err
!= 0) || (kim_gdata
->fw_entry
->data
== NULL
) ||
295 (kim_gdata
->fw_entry
->size
== 0))) {
296 pr_err(" request_firmware failed(errno %ld) for %s", err
,
300 ptr
= (void *)kim_gdata
->fw_entry
->data
;
301 len
= kim_gdata
->fw_entry
->size
;
302 /* bts_header to remove out magic number and
305 ptr
+= sizeof(struct bts_header
);
306 len
-= sizeof(struct bts_header
);
308 while (len
> 0 && ptr
) {
309 pr_debug(" action size %d, type %d ",
310 ((struct bts_action
*)ptr
)->size
,
311 ((struct bts_action
*)ptr
)->type
);
313 switch (((struct bts_action
*)ptr
)->type
) {
314 case ACTION_SEND_COMMAND
: /* action send */
315 action_ptr
= &(((struct bts_action
*)ptr
)->data
[0]);
317 (((struct hci_command
*)action_ptr
)->opcode
==
319 /* ignore remote change
320 * baud rate HCI VS command */
322 (" change remote baud"
323 " rate command in firmware");
327 INIT_COMPLETION(kim_gdata
->kim_rcvd
);
328 err
= st_int_write(kim_gdata
->core_data
,
329 ((struct bts_action_send
*)action_ptr
)->data
,
330 ((struct bts_action
*)ptr
)->size
);
331 if (unlikely(err
< 0)) {
332 release_firmware(kim_gdata
->fw_entry
);
335 if (!wait_for_completion_timeout
336 (&kim_gdata
->kim_rcvd
,
337 msecs_to_jiffies(CMD_RESP_TIME
))) {
339 (" response timeout during fw download ");
341 release_firmware(kim_gdata
->fw_entry
);
345 case ACTION_DELAY
: /* sleep */
346 pr_info("sleep command in scr");
347 action_ptr
= &(((struct bts_action
*)ptr
)->data
[0]);
348 mdelay(((struct bts_action_delay
*)action_ptr
)->msec
);
352 len
- (sizeof(struct bts_action
) +
353 ((struct bts_action
*)ptr
)->size
);
355 ptr
+ sizeof(struct bts_action
) +
356 ((struct bts_action
*)ptr
)->size
;
358 /* fw download complete */
359 release_firmware(kim_gdata
->fw_entry
);
363 /**********************************************************************/
364 /* functions called from ST core */
365 /* function to toggle the GPIO
366 * needs to know whether the GPIO is active high or active low
368 void st_kim_chip_toggle(enum proto_type type
, enum kim_gpio_state state
)
370 struct platform_device
*kim_pdev
;
371 struct kim_data_s
*kim_gdata
;
372 pr_info(" %s ", __func__
);
374 kim_pdev
= st_get_plat_device(0);
375 kim_gdata
= dev_get_drvdata(&kim_pdev
->dev
);
377 if (kim_gdata
->gpios
[type
] == -1) {
378 pr_info(" gpio not requested for protocol %s",
379 protocol_names
[type
]);
388 if (state
== KIM_GPIO_ACTIVE
)
389 gpio_set_value(kim_gdata
->gpios
[ST_FM
], GPIO_LOW
);
391 gpio_set_value(kim_gdata
->gpios
[ST_FM
], GPIO_HIGH
);
395 if (state
== KIM_GPIO_ACTIVE
)
396 gpio_set_value(kim_gdata
->gpios
[ST_GPS
], GPIO_HIGH
);
398 gpio_set_value(kim_gdata
->gpios
[ST_GPS
], GPIO_LOW
);
409 /* called from ST Core, when REG_IN_PROGRESS (registration in progress)
411 * 1. response to read local version
412 * 2. during send/recv's of firmware download
414 void st_kim_recv(void *disc_data
, const unsigned char *data
, long count
)
416 struct st_data_s
*st_gdata
= (struct st_data_s
*)disc_data
;
417 struct kim_data_s
*kim_gdata
= st_gdata
->kim_data
;
419 pr_info(" %s ", __func__
);
420 /* copy to local buffer */
421 if (unlikely(data
[4] == 0x01 && data
[5] == 0x10 && data
[0] == 0x04)) {
422 /* must be the read_ver_cmd */
423 memcpy(kim_gdata
->resp_buffer
, data
, count
);
424 complete_all(&kim_gdata
->kim_rcvd
);
427 kim_int_recv(kim_gdata
, data
, count
);
428 /* either completes or times out */
433 /* to signal completion of line discipline installation
434 * called from ST Core, upon tty_open
436 void st_kim_complete(void *kim_data
)
438 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
439 complete(&kim_gdata
->ldisc_installed
);
443 * st_kim_start - called from ST Core upon 1st registration
444 * This involves toggling the chip enable gpio, reading
445 * the firmware version from chip, forming the fw file name
446 * based on the chip version, requesting the fw, parsing it
447 * and perform download(send/recv).
449 long st_kim_start(void *kim_data
)
452 long retry
= POR_RETRY_COUNT
;
453 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
455 pr_info(" %s", __func__
);
458 /* TODO: this is only because rfkill sub-system
459 * doesn't send events to user-space if the state
462 rfkill_set_hw_state(kim_gdata
->rfkill
[ST_BT
], 1);
463 /* Configure BT nShutdown to HIGH state */
464 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
465 mdelay(5); /* FIXME: a proper toggle */
466 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_HIGH
);
468 /* re-initialize the completion */
469 INIT_COMPLETION(kim_gdata
->ldisc_installed
);
470 #if 0 /* older way of signalling user-space UIM */
471 /* send signal to UIM */
472 err
= kill_pid(find_get_pid(kim_gdata
->uim_pid
), SIGUSR2
, 0);
474 pr_info(" sending SIGUSR2 to uim failed %ld", err
);
479 /* unblock and send event to UIM via /dev/rfkill */
480 rfkill_set_hw_state(kim_gdata
->rfkill
[ST_BT
], 0);
481 /* wait for ldisc to be installed */
482 err
= wait_for_completion_timeout(&kim_gdata
->ldisc_installed
,
483 msecs_to_jiffies(LDISC_TIME
));
484 if (!err
) { /* timeout */
485 pr_err("line disc installation timed out ");
489 /* ldisc installed now */
490 pr_info(" line discipline installed ");
491 err
= download_firmware(kim_gdata
);
493 pr_err("download firmware failed");
495 } else { /* on success don't retry */
504 * st_kim_stop - called from ST Core, on the last un-registration
505 * toggle low the chip enable gpio
507 long st_kim_stop(void *kim_data
)
510 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
512 INIT_COMPLETION(kim_gdata
->ldisc_installed
);
513 #if 0 /* older way of signalling user-space UIM */
514 /* send signal to UIM */
515 err
= kill_pid(find_get_pid(kim_gdata
->uim_pid
), SIGUSR2
, 1);
517 pr_err("sending SIGUSR2 to uim failed %ld", err
);
521 /* set BT rfkill to be blocked */
522 err
= rfkill_set_hw_state(kim_gdata
->rfkill
[ST_BT
], 1);
524 /* wait for ldisc to be un-installed */
525 err
= wait_for_completion_timeout(&kim_gdata
->ldisc_installed
,
526 msecs_to_jiffies(LDISC_TIME
));
527 if (!err
) { /* timeout */
528 pr_err(" timed out waiting for ldisc to be un-installed");
532 /* By default configure BT nShutdown to LOW state */
533 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
535 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_HIGH
);
537 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
541 /**********************************************************************/
542 /* functions called from subsystems */
543 /* called when debugfs entry is read from */
545 static int show_version(struct seq_file
*s
, void *unused
)
547 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)s
->private;
548 seq_printf(s
, "%04X %d.%d.%d\n", kim_gdata
->version
.full
,
549 kim_gdata
->version
.chip
, kim_gdata
->version
.maj_ver
,
550 kim_gdata
->version
.min_ver
);
554 static int show_list(struct seq_file
*s
, void *unused
)
556 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)s
->private;
557 kim_st_list_protocols(kim_gdata
->core_data
, s
);
561 /* function called from rfkill subsystem, when someone from
562 * user space would write 0/1 on the sysfs entry
563 * /sys/class/rfkill/rfkill0,1,3/state
565 static int kim_toggle_radio(void *data
, bool blocked
)
567 enum proto_type type
= *((enum proto_type
*)data
);
568 pr_debug(" %s: %d ", __func__
, type
);
577 st_kim_chip_toggle(type
, KIM_GPIO_INACTIVE
);
579 st_kim_chip_toggle(type
, KIM_GPIO_ACTIVE
);
582 pr_err(" wrong proto type ");
589 * st_kim_ref - reference the core's data
590 * This references the per-ST platform device in the arch/xx/
592 * This would enable multiple such platform devices to exist
593 * on a given platform
595 void st_kim_ref(struct st_data_s
**core_data
, int id
)
597 struct platform_device
*pdev
;
598 struct kim_data_s
*kim_gdata
;
599 /* get kim_gdata reference from platform device */
600 pdev
= st_get_plat_device(id
);
601 kim_gdata
= dev_get_drvdata(&pdev
->dev
);
602 *core_data
= kim_gdata
->core_data
;
605 static int kim_version_open(struct inode
*i
, struct file
*f
)
607 return single_open(f
, show_version
, i
->i_private
);
610 static int kim_list_open(struct inode
*i
, struct file
*f
)
612 return single_open(f
, show_list
, i
->i_private
);
615 static const struct file_operations version_debugfs_fops
= {
617 .open
= kim_version_open
,
620 .release
= single_release
,
622 static const struct file_operations list_debugfs_fops
= {
624 .open
= kim_list_open
,
627 .release
= single_release
,
630 /**********************************************************************/
631 /* functions called from platform device driver subsystem
632 * need to have a relevant platform device entry in the platform's
636 struct dentry
*kim_debugfs_dir
;
637 static int kim_probe(struct platform_device
*pdev
)
641 long *gpios
= pdev
->dev
.platform_data
;
642 struct kim_data_s
*kim_gdata
;
644 if ((pdev
->id
!= -1) && (pdev
->id
< MAX_ST_DEVICES
)) {
645 /* multiple devices could exist */
646 st_kim_devices
[pdev
->id
] = pdev
;
648 /* platform's sure about existance of 1 device */
649 st_kim_devices
[0] = pdev
;
652 kim_gdata
= kzalloc(sizeof(struct kim_data_s
), GFP_ATOMIC
);
654 pr_err("no mem to allocate");
657 dev_set_drvdata(&pdev
->dev
, kim_gdata
);
659 status
= st_core_init(&kim_gdata
->core_data
);
661 pr_err(" ST core init failed");
664 /* refer to itself */
665 kim_gdata
->core_data
->kim_data
= kim_gdata
;
667 for (proto
= 0; proto
< ST_MAX
; proto
++) {
668 kim_gdata
->gpios
[proto
] = gpios
[proto
];
669 pr_info(" %ld gpio to be requested", gpios
[proto
]);
672 for (proto
= 0; (proto
< ST_MAX
) && (gpios
[proto
] != -1); proto
++) {
673 /* Claim the Bluetooth/FM/GPIO
674 * nShutdown gpio from the system
676 status
= gpio_request(gpios
[proto
], "kim");
677 if (unlikely(status
)) {
678 pr_err(" gpio %ld request failed ", gpios
[proto
]);
681 if (gpios
[proto
] != -1)
682 gpio_free(gpios
[proto
]);
687 /* Configure nShutdown GPIO as output=0 */
689 gpio_direction_output(gpios
[proto
], 0);
690 if (unlikely(status
)) {
691 pr_err(" unable to configure gpio %ld",
695 if (gpios
[proto
] != -1)
696 gpio_free(gpios
[proto
]);
701 /* get reference of pdev for request_firmware
703 kim_gdata
->kim_pdev
= pdev
;
704 init_completion(&kim_gdata
->kim_rcvd
);
705 init_completion(&kim_gdata
->ldisc_installed
);
707 for (proto
= 0; (proto
< ST_MAX
) && (gpios
[proto
] != -1); proto
++) {
708 /* TODO: should all types be rfkill_type_bt ? */
709 kim_gdata
->rf_protos
[proto
] = proto
;
710 kim_gdata
->rfkill
[proto
] = rfkill_alloc(protocol_names
[proto
],
711 &pdev
->dev
, RFKILL_TYPE_BLUETOOTH
,
712 &kim_rfkill_ops
, &kim_gdata
->rf_protos
[proto
]);
713 if (kim_gdata
->rfkill
[proto
] == NULL
) {
714 pr_err("cannot create rfkill entry for gpio %ld",
718 /* block upon creation */
719 rfkill_init_sw_state(kim_gdata
->rfkill
[proto
], 1);
720 status
= rfkill_register(kim_gdata
->rfkill
[proto
]);
721 if (unlikely(status
)) {
722 pr_err("rfkill registration failed for gpio %ld",
724 rfkill_unregister(kim_gdata
->rfkill
[proto
]);
727 pr_info("rfkill entry created for %ld", gpios
[proto
]);
730 kim_debugfs_dir
= debugfs_create_dir("ti-st", NULL
);
731 if (IS_ERR(kim_debugfs_dir
)) {
732 pr_err(" debugfs entries creation failed ");
733 kim_debugfs_dir
= NULL
;
737 debugfs_create_file("version", S_IRUGO
, kim_debugfs_dir
,
738 kim_gdata
, &version_debugfs_fops
);
739 debugfs_create_file("protocols", S_IRUGO
, kim_debugfs_dir
,
740 kim_gdata
, &list_debugfs_fops
);
741 pr_info(" debugfs entries created ");
745 static int kim_remove(struct platform_device
*pdev
)
747 /* free the GPIOs requested
749 long *gpios
= pdev
->dev
.platform_data
;
751 struct kim_data_s
*kim_gdata
;
753 kim_gdata
= dev_get_drvdata(&pdev
->dev
);
755 for (proto
= 0; (proto
< ST_MAX
) && (gpios
[proto
] != -1); proto
++) {
756 /* Claim the Bluetooth/FM/GPIO
757 * nShutdown gpio from the system
759 gpio_free(gpios
[proto
]);
760 rfkill_unregister(kim_gdata
->rfkill
[proto
]);
761 rfkill_destroy(kim_gdata
->rfkill
[proto
]);
762 kim_gdata
->rfkill
[proto
] = NULL
;
764 pr_info("kim: GPIO Freed");
765 debugfs_remove_recursive(kim_debugfs_dir
);
766 kim_gdata
->kim_pdev
= NULL
;
767 st_core_exit(kim_gdata
->core_data
);
774 /**********************************************************************/
775 /* entry point for ST KIM module, called in from ST Core */
777 static int __init
st_kim_init(void)
780 ret
= platform_driver_register(&kim_platform_driver
);
782 pr_err("platform drv registration failed");
788 static void __exit
st_kim_deinit(void)
790 /* the following returns void */
791 platform_driver_unregister(&kim_platform_driver
);
795 module_init(st_kim_init
);
796 module_exit(st_kim_deinit
);
797 MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>");
798 MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips ");
799 MODULE_LICENSE("GPL");