1 /*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
18
19 #include <linux/types.h>
20 #include <linux/netdevice.h>
21 #include <linux/mmc/sdio.h>
22 #include <linux/mmc/core.h>
23 #include <linux/mmc/sdio_func.h>
24 #include <linux/mmc/sdio_ids.h>
25 #include <linux/mmc/card.h>
26 #include <linux/suspend.h>
27 #include <linux/errno.h>
28 #include <linux/sched.h> /* request_irq() */
29 #include <linux/module.h>
30 #include <net/cfg80211.h>
31
32 #include <defs.h>
33 #include <brcm_hw_ids.h>
34 #include <brcmu_utils.h>
35 #include <brcmu_wifi.h>
36 #include "sdio_host.h"
37 #include "dhd_dbg.h"
38 #include "dhd_bus.h"
39
40 #define SDIO_VENDOR_ID_BROADCOM 0x02d0
41
42 #define DMA_ALIGN_MASK 0x03
43
44 #define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
45 #define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
46
47 #define SDIO_FUNC1_BLOCKSIZE 64
48 #define SDIO_FUNC2_BLOCKSIZE 512
49
50 /* devices we support, null terminated */
51 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
52 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
53 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
54 { /* end: all zeroes */ },
55 };
56 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
57
58 static bool
brcmf_pm_resume_error(struct brcmf_sdio_dev * sdiodev)59 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
60 {
61 bool is_err = false;
62 #ifdef CONFIG_PM_SLEEP
63 is_err = atomic_read(&sdiodev->suspend);
64 #endif
65 return is_err;
66 }
67
68 static void
brcmf_pm_resume_wait(struct brcmf_sdio_dev * sdiodev,wait_queue_head_t * wq)69 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
70 {
71 #ifdef CONFIG_PM_SLEEP
72 int retry = 0;
73 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
74 wait_event_timeout(*wq, false, HZ/100);
75 #endif
76 }
77
brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev * sdiodev,uint regaddr,u8 * byte)78 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
79 uint regaddr, u8 *byte)
80 {
81 struct sdio_func *sdfunc = sdiodev->func[0];
82 int err_ret;
83
84 /*
85 * Can only directly write to some F0 registers.
86 * Handle F2 enable/disable and Abort command
87 * as a special case.
88 */
89 if (regaddr == SDIO_CCCR_IOEx) {
90 sdfunc = sdiodev->func[2];
91 if (sdfunc) {
92 sdio_claim_host(sdfunc);
93 if (*byte & SDIO_FUNC_ENABLE_2) {
94 /* Enable Function 2 */
95 err_ret = sdio_enable_func(sdfunc);
96 if (err_ret)
97 brcmf_dbg(ERROR,
98 "enable F2 failed:%d\n",
99 err_ret);
100 } else {
101 /* Disable Function 2 */
102 err_ret = sdio_disable_func(sdfunc);
103 if (err_ret)
104 brcmf_dbg(ERROR,
105 "Disable F2 failed:%d\n",
106 err_ret);
107 }
108 sdio_release_host(sdfunc);
109 }
110 } else if (regaddr == SDIO_CCCR_ABORT) {
111 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
112 GFP_KERNEL);
113 if (!sdfunc)
114 return -ENOMEM;
115 sdfunc->num = 0;
116 sdio_claim_host(sdfunc);
117 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
118 sdio_release_host(sdfunc);
119 kfree(sdfunc);
120 } else if (regaddr < 0xF0) {
121 brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr);
122 err_ret = -EPERM;
123 } else {
124 sdio_claim_host(sdfunc);
125 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
126 sdio_release_host(sdfunc);
127 }
128
129 return err_ret;
130 }
131
brcmf_sdioh_request_byte(struct brcmf_sdio_dev * sdiodev,uint rw,uint func,uint regaddr,u8 * byte)132 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
133 uint regaddr, u8 *byte)
134 {
135 int err_ret;
136
137 brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
138
139 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
140 if (brcmf_pm_resume_error(sdiodev))
141 return -EIO;
142
143 if (rw && func == 0) {
144 /* handle F0 separately */
145 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
146 } else {
147 sdio_claim_host(sdiodev->func[func]);
148 if (rw) /* CMD52 Write */
149 sdio_writeb(sdiodev->func[func], *byte, regaddr,
150 &err_ret);
151 else if (func == 0) {
152 *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
153 &err_ret);
154 } else {
155 *byte = sdio_readb(sdiodev->func[func], regaddr,
156 &err_ret);
157 }
158 sdio_release_host(sdiodev->func[func]);
159 }
160
161 if (err_ret)
162 brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
163 rw ? "write" : "read", func, regaddr, *byte, err_ret);
164
165 return err_ret;
166 }
167
brcmf_sdioh_request_word(struct brcmf_sdio_dev * sdiodev,uint rw,uint func,uint addr,u32 * word,uint nbytes)168 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
169 uint rw, uint func, uint addr, u32 *word,
170 uint nbytes)
171 {
172 int err_ret = -EIO;
173
174 if (func == 0) {
175 brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n");
176 return -EINVAL;
177 }
178
179 brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
180 rw, func, addr, nbytes);
181
182 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
183 if (brcmf_pm_resume_error(sdiodev))
184 return -EIO;
185 /* Claim host controller */
186 sdio_claim_host(sdiodev->func[func]);
187
188 if (rw) { /* CMD52 Write */
189 if (nbytes == 4)
190 sdio_writel(sdiodev->func[func], *word, addr,
191 &err_ret);
192 else if (nbytes == 2)
193 sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
194 addr, &err_ret);
195 else
196 brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
197 } else { /* CMD52 Read */
198 if (nbytes == 4)
199 *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
200 else if (nbytes == 2)
201 *word = sdio_readw(sdiodev->func[func], addr,
202 &err_ret) & 0xFFFF;
203 else
204 brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes);
205 }
206
207 /* Release host controller */
208 sdio_release_host(sdiodev->func[func]);
209
210 if (err_ret)
211 brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n",
212 rw ? "write" : "read", err_ret);
213
214 return err_ret;
215 }
216
217 /* precondition: host controller is claimed */
218 static int
brcmf_sdioh_request_data(struct brcmf_sdio_dev * sdiodev,uint write,bool fifo,uint func,uint addr,struct sk_buff * pkt,uint pktlen)219 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
220 uint func, uint addr, struct sk_buff *pkt, uint pktlen)
221 {
222 int err_ret = 0;
223
224 if ((write) && (!fifo)) {
225 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
226 ((u8 *) (pkt->data)), pktlen);
227 } else if (write) {
228 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
229 ((u8 *) (pkt->data)), pktlen);
230 } else if (fifo) {
231 err_ret = sdio_readsb(sdiodev->func[func],
232 ((u8 *) (pkt->data)), addr, pktlen);
233 } else {
234 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
235 ((u8 *) (pkt->data)),
236 addr, pktlen);
237 }
238
239 return err_ret;
240 }
241
242 /*
243 * This function takes a queue of packets. The packets on the queue
244 * are assumed to be properly aligned by the caller.
245 */
246 int
brcmf_sdioh_request_chain(struct brcmf_sdio_dev * sdiodev,uint fix_inc,uint write,uint func,uint addr,struct sk_buff_head * pktq)247 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
248 uint write, uint func, uint addr,
249 struct sk_buff_head *pktq)
250 {
251 bool fifo = (fix_inc == SDIOH_DATA_FIX);
252 u32 SGCount = 0;
253 int err_ret = 0;
254
255 struct sk_buff *pkt;
256
257 brcmf_dbg(TRACE, "Enter\n");
258
259 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
260 if (brcmf_pm_resume_error(sdiodev))
261 return -EIO;
262
263 /* Claim host controller */
264 sdio_claim_host(sdiodev->func[func]);
265
266 skb_queue_walk(pktq, pkt) {
267 uint pkt_len = pkt->len;
268 pkt_len += 3;
269 pkt_len &= 0xFFFFFFFC;
270
271 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
272 addr, pkt, pkt_len);
273 if (err_ret) {
274 brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
275 write ? "TX" : "RX", pkt, SGCount, addr,
276 pkt_len, err_ret);
277 } else {
278 brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
279 write ? "TX" : "RX", pkt, SGCount, addr,
280 pkt_len);
281 }
282 if (!fifo)
283 addr += pkt_len;
284
285 SGCount++;
286 }
287
288 /* Release host controller */
289 sdio_release_host(sdiodev->func[func]);
290
291 brcmf_dbg(TRACE, "Exit\n");
292 return err_ret;
293 }
294
295 /*
296 * This function takes a single DMA-able packet.
297 */
brcmf_sdioh_request_buffer(struct brcmf_sdio_dev * sdiodev,uint fix_inc,uint write,uint func,uint addr,struct sk_buff * pkt)298 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
299 uint fix_inc, uint write, uint func, uint addr,
300 struct sk_buff *pkt)
301 {
302 int status;
303 uint pkt_len;
304 bool fifo = (fix_inc == SDIOH_DATA_FIX);
305
306 brcmf_dbg(TRACE, "Enter\n");
307
308 if (pkt == NULL)
309 return -EINVAL;
310 pkt_len = pkt->len;
311
312 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
313 if (brcmf_pm_resume_error(sdiodev))
314 return -EIO;
315
316 /* Claim host controller */
317 sdio_claim_host(sdiodev->func[func]);
318
319 pkt_len += 3;
320 pkt_len &= (uint)~3;
321
322 status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
323 addr, pkt, pkt_len);
324 if (status) {
325 brcmf_dbg(ERROR, "%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
326 write ? "TX" : "RX", pkt, addr, pkt_len, status);
327 } else {
328 brcmf_dbg(TRACE, "%s xfr'd %p, addr=0x%05x, len=%d\n",
329 write ? "TX" : "RX", pkt, addr, pkt_len);
330 }
331
332 /* Release host controller */
333 sdio_release_host(sdiodev->func[func]);
334
335 return status;
336 }
337
338 /* Read client card reg */
339 static int
brcmf_sdioh_card_regread(struct brcmf_sdio_dev * sdiodev,int func,u32 regaddr,int regsize,u32 * data)340 brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr,
341 int regsize, u32 *data)
342 {
343
344 if ((func == 0) || (regsize == 1)) {
345 u8 temp = 0;
346
347 brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr,
348 &temp);
349 *data = temp;
350 *data &= 0xff;
351 brcmf_dbg(DATA, "byte read data=0x%02x\n", *data);
352 } else {
353 brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr,
354 data, regsize);
355 if (regsize == 2)
356 *data &= 0xffff;
357
358 brcmf_dbg(DATA, "word read data=0x%08x\n", *data);
359 }
360
361 return SUCCESS;
362 }
363
brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev * sdiodev,u32 regaddr)364 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
365 {
366 /* read 24 bits and return valid 17 bit addr */
367 int i;
368 u32 scratch, regdata;
369 __le32 scratch_le;
370 u8 *ptr = (u8 *)&scratch_le;
371
372 for (i = 0; i < 3; i++) {
373 if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1,
374 ®data)) != SUCCESS)
375 brcmf_dbg(ERROR, "Can't read!\n");
376
377 *ptr++ = (u8) regdata;
378 regaddr++;
379 }
380
381 /* Only the lower 17-bits are valid */
382 scratch = le32_to_cpu(scratch_le);
383 scratch &= 0x0001FFFF;
384 return scratch;
385 }
386
brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev * sdiodev)387 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
388 {
389 int err_ret;
390 u32 fbraddr;
391 u8 func;
392
393 brcmf_dbg(TRACE, "\n");
394
395 /* Get the Card's common CIS address */
396 sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
397 SDIO_CCCR_CIS);
398 brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n",
399 sdiodev->func_cis_ptr[0]);
400
401 /* Get the Card's function CIS (for each function) */
402 for (fbraddr = SDIO_FBR_BASE(1), func = 1;
403 func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
404 sdiodev->func_cis_ptr[func] =
405 brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
406 brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n",
407 func, sdiodev->func_cis_ptr[func]);
408 }
409
410 /* Enable Function 1 */
411 sdio_claim_host(sdiodev->func[1]);
412 err_ret = sdio_enable_func(sdiodev->func[1]);
413 sdio_release_host(sdiodev->func[1]);
414 if (err_ret)
415 brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret);
416
417 return false;
418 }
419
420 /*
421 * Public entry points & extern's
422 */
brcmf_sdioh_attach(struct brcmf_sdio_dev * sdiodev)423 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
424 {
425 int err_ret = 0;
426
427 brcmf_dbg(TRACE, "\n");
428
429 sdiodev->num_funcs = 2;
430
431 sdio_claim_host(sdiodev->func[1]);
432 err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
433 sdio_release_host(sdiodev->func[1]);
434 if (err_ret) {
435 brcmf_dbg(ERROR, "Failed to set F1 blocksize\n");
436 goto out;
437 }
438
439 sdio_claim_host(sdiodev->func[2]);
440 err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
441 sdio_release_host(sdiodev->func[2]);
442 if (err_ret) {
443 brcmf_dbg(ERROR, "Failed to set F2 blocksize\n");
444 goto out;
445 }
446
447 brcmf_sdioh_enablefuncs(sdiodev);
448
449 out:
450 brcmf_dbg(TRACE, "Done\n");
451 return err_ret;
452 }
453
brcmf_sdioh_detach(struct brcmf_sdio_dev * sdiodev)454 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
455 {
456 brcmf_dbg(TRACE, "\n");
457
458 /* Disable Function 2 */
459 sdio_claim_host(sdiodev->func[2]);
460 sdio_disable_func(sdiodev->func[2]);
461 sdio_release_host(sdiodev->func[2]);
462
463 /* Disable Function 1 */
464 sdio_claim_host(sdiodev->func[1]);
465 sdio_disable_func(sdiodev->func[1]);
466 sdio_release_host(sdiodev->func[1]);
467
468 }
469
brcmf_ops_sdio_probe(struct sdio_func * func,const struct sdio_device_id * id)470 static int brcmf_ops_sdio_probe(struct sdio_func *func,
471 const struct sdio_device_id *id)
472 {
473 int ret = 0;
474 struct brcmf_sdio_dev *sdiodev;
475 struct brcmf_bus *bus_if;
476 brcmf_dbg(TRACE, "Enter\n");
477 brcmf_dbg(TRACE, "func->class=%x\n", func->class);
478 brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor);
479 brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device);
480 brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num);
481
482 if (func->num == 1) {
483 if (dev_get_drvdata(&func->card->dev)) {
484 brcmf_dbg(ERROR, "card private drvdata occupied\n");
485 return -ENXIO;
486 }
487 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
488 if (!bus_if)
489 return -ENOMEM;
490 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
491 if (!sdiodev) {
492 kfree(bus_if);
493 return -ENOMEM;
494 }
495 sdiodev->func[0] = func;
496 sdiodev->func[1] = func;
497 sdiodev->bus_if = bus_if;
498 bus_if->bus_priv.sdio = sdiodev;
499 bus_if->type = SDIO_BUS;
500 bus_if->align = BRCMF_SDALIGN;
501 dev_set_drvdata(&func->card->dev, sdiodev);
502
503 atomic_set(&sdiodev->suspend, false);
504 init_waitqueue_head(&sdiodev->request_byte_wait);
505 init_waitqueue_head(&sdiodev->request_word_wait);
506 init_waitqueue_head(&sdiodev->request_chain_wait);
507 init_waitqueue_head(&sdiodev->request_buffer_wait);
508 }
509
510 if (func->num == 2) {
511 sdiodev = dev_get_drvdata(&func->card->dev);
512 if ((!sdiodev) || (sdiodev->func[1]->card != func->card))
513 return -ENODEV;
514 sdiodev->func[2] = func;
515
516 bus_if = sdiodev->bus_if;
517 sdiodev->dev = &func->dev;
518 dev_set_drvdata(&func->dev, bus_if);
519
520 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n");
521 ret = brcmf_sdio_probe(sdiodev);
522 }
523
524 return ret;
525 }
526
brcmf_ops_sdio_remove(struct sdio_func * func)527 static void brcmf_ops_sdio_remove(struct sdio_func *func)
528 {
529 struct brcmf_bus *bus_if;
530 struct brcmf_sdio_dev *sdiodev;
531 brcmf_dbg(TRACE, "Enter\n");
532 brcmf_dbg(INFO, "func->class=%x\n", func->class);
533 brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor);
534 brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device);
535 brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num);
536
537 if (func->num == 2) {
538 bus_if = dev_get_drvdata(&func->dev);
539 sdiodev = bus_if->bus_priv.sdio;
540 brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n");
541 brcmf_sdio_remove(sdiodev);
542 dev_set_drvdata(&func->card->dev, NULL);
543 dev_set_drvdata(&func->dev, NULL);
544 kfree(bus_if);
545 kfree(sdiodev);
546 }
547 }
548
549 #ifdef CONFIG_PM_SLEEP
brcmf_sdio_suspend(struct device * dev)550 static int brcmf_sdio_suspend(struct device *dev)
551 {
552 mmc_pm_flag_t sdio_flags;
553 struct sdio_func *func = dev_to_sdio_func(dev);
554 struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
555 int ret = 0;
556
557 brcmf_dbg(TRACE, "\n");
558
559 atomic_set(&sdiodev->suspend, true);
560
561 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
562 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
563 brcmf_dbg(ERROR, "Host can't keep power while suspended\n");
564 return -EINVAL;
565 }
566
567 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
568 if (ret) {
569 brcmf_dbg(ERROR, "Failed to set pm_flags\n");
570 return ret;
571 }
572
573 brcmf_sdio_wdtmr_enable(sdiodev, false);
574
575 return ret;
576 }
577
brcmf_sdio_resume(struct device * dev)578 static int brcmf_sdio_resume(struct device *dev)
579 {
580 struct sdio_func *func = dev_to_sdio_func(dev);
581 struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
582
583 brcmf_sdio_wdtmr_enable(sdiodev, true);
584 atomic_set(&sdiodev->suspend, false);
585 return 0;
586 }
587
588 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
589 .suspend = brcmf_sdio_suspend,
590 .resume = brcmf_sdio_resume,
591 };
592 #endif /* CONFIG_PM_SLEEP */
593
594 static struct sdio_driver brcmf_sdmmc_driver = {
595 .probe = brcmf_ops_sdio_probe,
596 .remove = brcmf_ops_sdio_remove,
597 .name = "brcmfmac",
598 .id_table = brcmf_sdmmc_ids,
599 #ifdef CONFIG_PM_SLEEP
600 .drv = {
601 .pm = &brcmf_sdio_pm_ops,
602 },
603 #endif /* CONFIG_PM_SLEEP */
604 };
605
brcmf_sdio_exit(void)606 void brcmf_sdio_exit(void)
607 {
608 brcmf_dbg(TRACE, "Enter\n");
609
610 sdio_unregister_driver(&brcmf_sdmmc_driver);
611 }
612
brcmf_sdio_init(void)613 void brcmf_sdio_init(void)
614 {
615 int ret;
616
617 brcmf_dbg(TRACE, "Enter\n");
618
619 ret = sdio_register_driver(&brcmf_sdmmc_driver);
620
621 if (ret)
622 brcmf_dbg(ERROR, "sdio_register_driver failed: %d\n", ret);
623 }
624