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/tty.h>
35 #include <linux/skbuff.h>
36 #include <linux/ti_wilink_st.h>
39 #define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
40 static struct platform_device
*st_kim_devices
[MAX_ST_DEVICES
];
42 /**********************************************************************/
43 /* internal functions */
46 * st_get_plat_device -
47 * function which returns the reference to the platform device
48 * requested by id. As of now only 1 such device exists (id=0)
49 * the context requesting for reference can get the id to be
50 * requested by a. The protocol driver which is registering or
51 * b. the tty device which is opened.
53 static struct platform_device
*st_get_plat_device(int id
)
55 return st_kim_devices
[id
];
59 * validate_firmware_response -
60 * function to return whether the firmware response was proper
61 * in case of error don't complete so that waiting for proper
64 void validate_firmware_response(struct kim_data_s
*kim_gdata
)
66 struct sk_buff
*skb
= kim_gdata
->rx_skb
;
67 if (unlikely(skb
->data
[5] != 0)) {
68 pr_err("no proper response during fw download");
69 pr_err("data6 %x", skb
->data
[5]);
70 return; /* keep waiting for the proper response */
72 /* becos of all the script being downloaded */
73 complete_all(&kim_gdata
->kim_rcvd
);
77 /* check for data len received inside kim_int_recv
78 * most often hit the last case to update state to waiting for data
80 static inline int kim_check_data_len(struct kim_data_s
*kim_gdata
, int len
)
82 register int room
= skb_tailroom(kim_gdata
->rx_skb
);
84 pr_debug("len %d room %d", len
, room
);
87 validate_firmware_response(kim_gdata
);
88 } else if (len
> room
) {
89 /* Received packet's payload length is larger.
90 * We can't accommodate it in created skb.
92 pr_err("Data length is too large len %d room %d", len
,
94 kfree_skb(kim_gdata
->rx_skb
);
96 /* Packet header has non-zero payload length and
97 * we have enough space in created skb. Lets read
99 kim_gdata
->rx_state
= ST_W4_DATA
;
100 kim_gdata
->rx_count
= len
;
104 /* Change ST LL state to continue to process next
106 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
107 kim_gdata
->rx_skb
= NULL
;
108 kim_gdata
->rx_count
= 0;
114 * kim_int_recv - receive function called during firmware download
115 * firmware download responses on different UART drivers
116 * have been observed to come in bursts of different
117 * tty_receive and hence the logic
119 void kim_int_recv(struct kim_data_s
*kim_gdata
,
120 const unsigned char *data
, long count
)
122 const unsigned char *ptr
;
123 int len
= 0, type
= 0;
126 pr_debug("%s", __func__
);
127 /* Decode received bytes here */
129 if (unlikely(ptr
== NULL
)) {
130 pr_err(" received null from TTY ");
135 if (kim_gdata
->rx_count
) {
136 len
= min_t(unsigned int, kim_gdata
->rx_count
, count
);
137 memcpy(skb_put(kim_gdata
->rx_skb
, len
), ptr
, len
);
138 kim_gdata
->rx_count
-= len
;
142 if (kim_gdata
->rx_count
)
145 /* Check ST RX state machine , where are we? */
146 switch (kim_gdata
->rx_state
) {
147 /* Waiting for complete packet ? */
149 pr_debug("Complete pkt received");
150 validate_firmware_response(kim_gdata
);
151 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
152 kim_gdata
->rx_skb
= NULL
;
154 /* Waiting for Bluetooth event header ? */
157 (unsigned char *)&kim_gdata
->rx_skb
->data
[1];
158 pr_debug("event hdr: plen 0x%02x\n", *plen
);
159 kim_check_data_len(kim_gdata
, *plen
);
161 } /* end of switch */
162 } /* end of if rx_state */
164 /* Bluetooth event packet? */
166 kim_gdata
->rx_state
= ST_W4_HEADER
;
167 kim_gdata
->rx_count
= 2;
171 pr_info("unknown packet");
179 alloc_skb(1024+8, GFP_ATOMIC
);
180 if (!kim_gdata
->rx_skb
) {
181 pr_err("can't allocate mem for new packet");
182 kim_gdata
->rx_state
= ST_W4_PACKET_TYPE
;
183 kim_gdata
->rx_count
= 0;
186 skb_reserve(kim_gdata
->rx_skb
, 8);
187 kim_gdata
->rx_skb
->cb
[0] = 4;
188 kim_gdata
->rx_skb
->cb
[1] = 0;
194 static long read_local_version(struct kim_data_s
*kim_gdata
, char *bts_scr_name
)
196 unsigned short version
= 0, chip
= 0, min_ver
= 0, maj_ver
= 0;
197 const char read_ver_cmd
[] = { 0x01, 0x01, 0x10, 0x00 };
199 pr_debug("%s", __func__
);
201 INIT_COMPLETION(kim_gdata
->kim_rcvd
);
202 if (4 != st_int_write(kim_gdata
->core_data
, read_ver_cmd
, 4)) {
203 pr_err("kim: couldn't write 4 bytes");
207 if (!wait_for_completion_timeout
208 (&kim_gdata
->kim_rcvd
, msecs_to_jiffies(CMD_RESP_TIME
))) {
209 pr_err(" waiting for ver info- timed out ");
214 MAKEWORD(kim_gdata
->resp_buffer
[13],
215 kim_gdata
->resp_buffer
[14]);
216 chip
= (version
& 0x7C00) >> 10;
217 min_ver
= (version
& 0x007F);
218 maj_ver
= (version
& 0x0380) >> 7;
220 if (version
& 0x8000)
223 sprintf(bts_scr_name
, "TIInit_%d.%d.%d.bts", chip
, maj_ver
, min_ver
);
225 /* to be accessed later via sysfs entry */
226 kim_gdata
->version
.full
= version
;
227 kim_gdata
->version
.chip
= chip
;
228 kim_gdata
->version
.maj_ver
= maj_ver
;
229 kim_gdata
->version
.min_ver
= min_ver
;
231 pr_info("%s", bts_scr_name
);
236 * download_firmware -
237 * internal function which parses through the .bts firmware
238 * script file intreprets SEND, DELAY actions only as of now
240 static long download_firmware(struct kim_data_s
*kim_gdata
)
244 unsigned char *ptr
= NULL
;
245 unsigned char *action_ptr
= NULL
;
246 unsigned char bts_scr_name
[30] = { 0 }; /* 30 char long bts scr name? */
248 err
= read_local_version(kim_gdata
, bts_scr_name
);
250 pr_err("kim: failed to read local ver");
254 request_firmware(&kim_gdata
->fw_entry
, bts_scr_name
,
255 &kim_gdata
->kim_pdev
->dev
);
256 if (unlikely((err
!= 0) || (kim_gdata
->fw_entry
->data
== NULL
) ||
257 (kim_gdata
->fw_entry
->size
== 0))) {
258 pr_err(" request_firmware failed(errno %ld) for %s", err
,
262 ptr
= (void *)kim_gdata
->fw_entry
->data
;
263 len
= kim_gdata
->fw_entry
->size
;
264 /* bts_header to remove out magic number and
267 ptr
+= sizeof(struct bts_header
);
268 len
-= sizeof(struct bts_header
);
270 while (len
> 0 && ptr
) {
271 pr_debug(" action size %d, type %d ",
272 ((struct bts_action
*)ptr
)->size
,
273 ((struct bts_action
*)ptr
)->type
);
275 switch (((struct bts_action
*)ptr
)->type
) {
276 case ACTION_SEND_COMMAND
: /* action send */
277 action_ptr
= &(((struct bts_action
*)ptr
)->data
[0]);
279 (((struct hci_command
*)action_ptr
)->opcode
==
281 /* ignore remote change
282 * baud rate HCI VS command */
284 (" change remote baud"
285 " rate command in firmware");
289 INIT_COMPLETION(kim_gdata
->kim_rcvd
);
290 err
= st_int_write(kim_gdata
->core_data
,
291 ((struct bts_action_send
*)action_ptr
)->data
,
292 ((struct bts_action
*)ptr
)->size
);
293 if (unlikely(err
< 0)) {
294 release_firmware(kim_gdata
->fw_entry
);
297 if (!wait_for_completion_timeout
298 (&kim_gdata
->kim_rcvd
,
299 msecs_to_jiffies(CMD_RESP_TIME
))) {
301 (" response timeout during fw download ");
303 release_firmware(kim_gdata
->fw_entry
);
307 case ACTION_DELAY
: /* sleep */
308 pr_info("sleep command in scr");
309 action_ptr
= &(((struct bts_action
*)ptr
)->data
[0]);
310 mdelay(((struct bts_action_delay
*)action_ptr
)->msec
);
314 len
- (sizeof(struct bts_action
) +
315 ((struct bts_action
*)ptr
)->size
);
317 ptr
+ sizeof(struct bts_action
) +
318 ((struct bts_action
*)ptr
)->size
;
320 /* fw download complete */
321 release_firmware(kim_gdata
->fw_entry
);
325 /**********************************************************************/
326 /* functions called from ST core */
327 /* function to toggle the GPIO
328 * needs to know whether the GPIO is active high or active low
330 void st_kim_chip_toggle(enum proto_type type
, enum kim_gpio_state state
)
332 struct platform_device
*kim_pdev
;
333 struct kim_data_s
*kim_gdata
;
334 pr_info(" %s ", __func__
);
336 kim_pdev
= st_get_plat_device(0);
337 kim_gdata
= dev_get_drvdata(&kim_pdev
->dev
);
339 if (kim_gdata
->gpios
[type
] == -1) {
340 pr_info("gpio not requested for protocol %d", type
);
349 if (state
== KIM_GPIO_ACTIVE
)
350 gpio_set_value(kim_gdata
->gpios
[ST_FM
], GPIO_LOW
);
352 gpio_set_value(kim_gdata
->gpios
[ST_FM
], GPIO_HIGH
);
356 if (state
== KIM_GPIO_ACTIVE
)
357 gpio_set_value(kim_gdata
->gpios
[ST_GPS
], GPIO_HIGH
);
359 gpio_set_value(kim_gdata
->gpios
[ST_GPS
], GPIO_LOW
);
362 case ST_MAX_CHANNELS
:
370 /* called from ST Core, when REG_IN_PROGRESS (registration in progress)
372 * 1. response to read local version
373 * 2. during send/recv's of firmware download
375 void st_kim_recv(void *disc_data
, const unsigned char *data
, long count
)
377 struct st_data_s
*st_gdata
= (struct st_data_s
*)disc_data
;
378 struct kim_data_s
*kim_gdata
= st_gdata
->kim_data
;
380 /* copy to local buffer */
381 if (unlikely(data
[4] == 0x01 && data
[5] == 0x10 && data
[0] == 0x04)) {
382 /* must be the read_ver_cmd */
383 memcpy(kim_gdata
->resp_buffer
, data
, count
);
384 complete_all(&kim_gdata
->kim_rcvd
);
387 kim_int_recv(kim_gdata
, data
, count
);
388 /* either completes or times out */
393 /* to signal completion of line discipline installation
394 * called from ST Core, upon tty_open
396 void st_kim_complete(void *kim_data
)
398 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
399 complete(&kim_gdata
->ldisc_installed
);
403 * st_kim_start - called from ST Core upon 1st registration
404 * This involves toggling the chip enable gpio, reading
405 * the firmware version from chip, forming the fw file name
406 * based on the chip version, requesting the fw, parsing it
407 * and perform download(send/recv).
409 long st_kim_start(void *kim_data
)
412 long retry
= POR_RETRY_COUNT
;
413 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
415 pr_info(" %s", __func__
);
418 /* Configure BT nShutdown to HIGH state */
419 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
420 mdelay(5); /* FIXME: a proper toggle */
421 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_HIGH
);
423 /* re-initialize the completion */
424 INIT_COMPLETION(kim_gdata
->ldisc_installed
);
425 /* send notification to UIM */
426 kim_gdata
->ldisc_install
= 1;
427 pr_info("ldisc_install = 1");
428 sysfs_notify(&kim_gdata
->kim_pdev
->dev
.kobj
,
430 /* wait for ldisc to be installed */
431 err
= wait_for_completion_timeout(&kim_gdata
->ldisc_installed
,
432 msecs_to_jiffies(LDISC_TIME
));
433 if (!err
) { /* timeout */
434 pr_err("line disc installation timed out ");
435 kim_gdata
->ldisc_install
= 0;
436 pr_info("ldisc_install = 0");
437 sysfs_notify(&kim_gdata
->kim_pdev
->dev
.kobj
,
442 /* ldisc installed now */
443 pr_info(" line discipline installed ");
444 err
= download_firmware(kim_gdata
);
446 pr_err("download firmware failed");
447 kim_gdata
->ldisc_install
= 0;
448 pr_info("ldisc_install = 0");
449 sysfs_notify(&kim_gdata
->kim_pdev
->dev
.kobj
,
452 } else { /* on success don't retry */
461 * st_kim_stop - called from ST Core, on the last un-registration
462 * toggle low the chip enable gpio
464 long st_kim_stop(void *kim_data
)
467 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)kim_data
;
469 INIT_COMPLETION(kim_gdata
->ldisc_installed
);
471 /* Flush any pending characters in the driver and discipline. */
472 tty_ldisc_flush(kim_gdata
->core_data
->tty
);
473 tty_driver_flush_buffer(kim_gdata
->core_data
->tty
);
475 /* send uninstall notification to UIM */
476 pr_info("ldisc_install = 0");
477 kim_gdata
->ldisc_install
= 0;
478 sysfs_notify(&kim_gdata
->kim_pdev
->dev
.kobj
, NULL
, "install");
480 /* wait for ldisc to be un-installed */
481 err
= wait_for_completion_timeout(&kim_gdata
->ldisc_installed
,
482 msecs_to_jiffies(LDISC_TIME
));
483 if (!err
) { /* timeout */
484 pr_err(" timed out waiting for ldisc to be un-installed");
488 /* By default configure BT nShutdown to LOW state */
489 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
491 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_HIGH
);
493 gpio_set_value(kim_gdata
->gpios
[ST_BT
], GPIO_LOW
);
497 /**********************************************************************/
498 /* functions called from subsystems */
499 /* called when debugfs entry is read from */
501 static int show_version(struct seq_file
*s
, void *unused
)
503 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)s
->private;
504 seq_printf(s
, "%04X %d.%d.%d\n", kim_gdata
->version
.full
,
505 kim_gdata
->version
.chip
, kim_gdata
->version
.maj_ver
,
506 kim_gdata
->version
.min_ver
);
510 static int show_list(struct seq_file
*s
, void *unused
)
512 struct kim_data_s
*kim_gdata
= (struct kim_data_s
*)s
->private;
513 kim_st_list_protocols(kim_gdata
->core_data
, s
);
517 static ssize_t
show_install(struct device
*dev
,
518 struct device_attribute
*attr
, char *buf
)
520 struct kim_data_s
*kim_data
= dev_get_drvdata(dev
);
521 return sprintf(buf
, "%d\n", kim_data
->ldisc_install
);
524 static ssize_t
show_dev_name(struct device
*dev
,
525 struct device_attribute
*attr
, char *buf
)
527 struct kim_data_s
*kim_data
= dev_get_drvdata(dev
);
528 return sprintf(buf
, "%s\n", kim_data
->dev_name
);
531 static ssize_t
show_baud_rate(struct device
*dev
,
532 struct device_attribute
*attr
, char *buf
)
534 struct kim_data_s
*kim_data
= dev_get_drvdata(dev
);
535 return sprintf(buf
, "%ld\n", kim_data
->baud_rate
);
538 static ssize_t
show_flow_cntrl(struct device
*dev
,
539 struct device_attribute
*attr
, char *buf
)
541 struct kim_data_s
*kim_data
= dev_get_drvdata(dev
);
542 return sprintf(buf
, "%d\n", kim_data
->flow_cntrl
);
545 /* structures specific for sysfs entries */
546 static struct kobj_attribute ldisc_install
=
547 __ATTR(install
, 0444, (void *)show_install
, NULL
);
549 static struct kobj_attribute uart_dev_name
=
550 __ATTR(dev_name
, 0444, (void *)show_dev_name
, NULL
);
552 static struct kobj_attribute uart_baud_rate
=
553 __ATTR(baud_rate
, 0444, (void *)show_baud_rate
, NULL
);
555 static struct kobj_attribute uart_flow_cntrl
=
556 __ATTR(flow_cntrl
, 0444, (void *)show_flow_cntrl
, NULL
);
558 static struct attribute
*uim_attrs
[] = {
561 &uart_baud_rate
.attr
,
562 &uart_flow_cntrl
.attr
,
566 static struct attribute_group uim_attr_grp
= {
571 * st_kim_ref - reference the core's data
572 * This references the per-ST platform device in the arch/xx/
574 * This would enable multiple such platform devices to exist
575 * on a given platform
577 void st_kim_ref(struct st_data_s
**core_data
, int id
)
579 struct platform_device
*pdev
;
580 struct kim_data_s
*kim_gdata
;
581 /* get kim_gdata reference from platform device */
582 pdev
= st_get_plat_device(id
);
583 kim_gdata
= dev_get_drvdata(&pdev
->dev
);
584 *core_data
= kim_gdata
->core_data
;
587 static int kim_version_open(struct inode
*i
, struct file
*f
)
589 return single_open(f
, show_version
, i
->i_private
);
592 static int kim_list_open(struct inode
*i
, struct file
*f
)
594 return single_open(f
, show_list
, i
->i_private
);
597 static const struct file_operations version_debugfs_fops
= {
599 .open
= kim_version_open
,
602 .release
= single_release
,
604 static const struct file_operations list_debugfs_fops
= {
606 .open
= kim_list_open
,
609 .release
= single_release
,
612 /**********************************************************************/
613 /* functions called from platform device driver subsystem
614 * need to have a relevant platform device entry in the platform's
618 struct dentry
*kim_debugfs_dir
;
619 static int kim_probe(struct platform_device
*pdev
)
623 struct kim_data_s
*kim_gdata
;
624 struct ti_st_plat_data
*pdata
= pdev
->dev
.platform_data
;
625 long *gpios
= pdata
->gpios
;
627 if ((pdev
->id
!= -1) && (pdev
->id
< MAX_ST_DEVICES
)) {
628 /* multiple devices could exist */
629 st_kim_devices
[pdev
->id
] = pdev
;
631 /* platform's sure about existance of 1 device */
632 st_kim_devices
[0] = pdev
;
635 kim_gdata
= kzalloc(sizeof(struct kim_data_s
), GFP_ATOMIC
);
637 pr_err("no mem to allocate");
640 dev_set_drvdata(&pdev
->dev
, kim_gdata
);
642 status
= st_core_init(&kim_gdata
->core_data
);
644 pr_err(" ST core init failed");
647 /* refer to itself */
648 kim_gdata
->core_data
->kim_data
= kim_gdata
;
650 for (proto
= 0; proto
< ST_MAX_CHANNELS
; proto
++) {
651 kim_gdata
->gpios
[proto
] = gpios
[proto
];
652 pr_info(" %ld gpio to be requested", gpios
[proto
]);
655 for (proto
= 0; (proto
< ST_MAX_CHANNELS
)
656 && (gpios
[proto
] != -1); proto
++) {
657 /* Claim the Bluetooth/FM/GPIO
658 * nShutdown gpio from the system
660 status
= gpio_request(gpios
[proto
], "kim");
661 if (unlikely(status
)) {
662 pr_err(" gpio %ld request failed ", gpios
[proto
]);
665 if (gpios
[proto
] != -1)
666 gpio_free(gpios
[proto
]);
671 /* Configure nShutdown GPIO as output=0 */
673 gpio_direction_output(gpios
[proto
], 0);
674 if (unlikely(status
)) {
675 pr_err(" unable to configure gpio %ld",
679 if (gpios
[proto
] != -1)
680 gpio_free(gpios
[proto
]);
685 /* get reference of pdev for request_firmware
687 kim_gdata
->kim_pdev
= pdev
;
688 init_completion(&kim_gdata
->kim_rcvd
);
689 init_completion(&kim_gdata
->ldisc_installed
);
691 status
= sysfs_create_group(&pdev
->dev
.kobj
, &uim_attr_grp
);
693 pr_err("failed to create sysfs entries");
697 /* copying platform data */
698 strncpy(kim_gdata
->dev_name
, pdata
->dev_name
, UART_DEV_NAME_LEN
);
699 kim_gdata
->flow_cntrl
= pdata
->flow_cntrl
;
700 kim_gdata
->baud_rate
= pdata
->baud_rate
;
701 pr_info("sysfs entries created\n");
703 kim_debugfs_dir
= debugfs_create_dir("ti-st", NULL
);
704 if (IS_ERR(kim_debugfs_dir
)) {
705 pr_err(" debugfs entries creation failed ");
706 kim_debugfs_dir
= NULL
;
710 debugfs_create_file("version", S_IRUGO
, kim_debugfs_dir
,
711 kim_gdata
, &version_debugfs_fops
);
712 debugfs_create_file("protocols", S_IRUGO
, kim_debugfs_dir
,
713 kim_gdata
, &list_debugfs_fops
);
714 pr_info(" debugfs entries created ");
718 static int kim_remove(struct platform_device
*pdev
)
720 /* free the GPIOs requested */
721 struct ti_st_plat_data
*pdata
= pdev
->dev
.platform_data
;
722 long *gpios
= pdata
->gpios
;
724 struct kim_data_s
*kim_gdata
;
726 kim_gdata
= dev_get_drvdata(&pdev
->dev
);
728 for (proto
= 0; (proto
< ST_MAX_CHANNELS
)
729 && (gpios
[proto
] != -1); proto
++) {
730 /* Claim the Bluetooth/FM/GPIO
731 * nShutdown gpio from the system
733 gpio_free(gpios
[proto
]);
735 pr_info("kim: GPIO Freed");
736 debugfs_remove_recursive(kim_debugfs_dir
);
738 sysfs_remove_group(&pdev
->dev
.kobj
, &uim_attr_grp
);
739 kim_gdata
->kim_pdev
= NULL
;
740 st_core_exit(kim_gdata
->core_data
);
747 int kim_suspend(struct platform_device
*pdev
, pm_message_t state
)
749 struct ti_st_plat_data
*pdata
= pdev
->dev
.platform_data
;
752 return pdata
->suspend(pdev
, state
);
757 int kim_resume(struct platform_device
*pdev
)
759 struct ti_st_plat_data
*pdata
= pdev
->dev
.platform_data
;
762 return pdata
->resume(pdev
);
767 /**********************************************************************/
768 /* entry point for ST KIM module, called in from ST Core */
769 static struct platform_driver kim_platform_driver
= {
771 .remove
= kim_remove
,
772 .suspend
= kim_suspend
,
773 .resume
= kim_resume
,
776 .owner
= THIS_MODULE
,
780 static int __init
st_kim_init(void)
782 return platform_driver_register(&kim_platform_driver
);
785 static void __exit
st_kim_deinit(void)
787 platform_driver_unregister(&kim_platform_driver
);
791 module_init(st_kim_init
);
792 module_exit(st_kim_deinit
);
793 MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>");
794 MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips ");
795 MODULE_LICENSE("GPL");