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 #include <linux/types.h>
18 #include <linux/netdevice.h>
19 #include <linux/mmc/sdio.h>
20 #include <linux/mmc/core.h>
21 #include <linux/mmc/sdio_func.h>
22 #include <linux/mmc/sdio_ids.h>
23 #include <linux/mmc/card.h>
24 #include <linux/suspend.h>
25 #include <linux/errno.h>
26 #include <linux/sched.h> /* request_irq() */
27 #include <linux/module.h>
28 #include <linux/platform_device.h>
29 #include <linux/platform_data/brcmfmac-sdio.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_43143 43143
45 #define SDIO_DEVICE_ID_BROADCOM_43241 0x4324
46 #define SDIO_DEVICE_ID_BROADCOM_4329 0x4329
47 #define SDIO_DEVICE_ID_BROADCOM_4330 0x4330
48 #define SDIO_DEVICE_ID_BROADCOM_4334 0x4334
49 #define SDIO_DEVICE_ID_BROADCOM_4335 0x4335
50
51 #define SDIO_FUNC1_BLOCKSIZE 64
52 #define SDIO_FUNC2_BLOCKSIZE 512
53
54 /* devices we support, null terminated */
55 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
56 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
57 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
58 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
59 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
60 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
61 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4335)},
62 { /* end: all zeroes */ },
63 };
64 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
65
66 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
67
68
69 static bool
brcmf_pm_resume_error(struct brcmf_sdio_dev * sdiodev)70 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
71 {
72 bool is_err = false;
73 #ifdef CONFIG_PM_SLEEP
74 is_err = atomic_read(&sdiodev->suspend);
75 #endif
76 return is_err;
77 }
78
79 static void
brcmf_pm_resume_wait(struct brcmf_sdio_dev * sdiodev,wait_queue_head_t * wq)80 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
81 {
82 #ifdef CONFIG_PM_SLEEP
83 int retry = 0;
84 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
85 wait_event_timeout(*wq, false, HZ/100);
86 #endif
87 }
88
brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev * sdiodev,uint regaddr,u8 * byte)89 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
90 uint regaddr, u8 *byte)
91 {
92 struct sdio_func *sdfunc = sdiodev->func[0];
93 int err_ret;
94
95 /*
96 * Can only directly write to some F0 registers.
97 * Handle F2 enable/disable and Abort command
98 * as a special case.
99 */
100 if (regaddr == SDIO_CCCR_IOEx) {
101 sdfunc = sdiodev->func[2];
102 if (sdfunc) {
103 if (*byte & SDIO_FUNC_ENABLE_2) {
104 /* Enable Function 2 */
105 err_ret = sdio_enable_func(sdfunc);
106 if (err_ret)
107 brcmf_err("enable F2 failed:%d\n",
108 err_ret);
109 } else {
110 /* Disable Function 2 */
111 err_ret = sdio_disable_func(sdfunc);
112 if (err_ret)
113 brcmf_err("Disable F2 failed:%d\n",
114 err_ret);
115 }
116 }
117 } else if ((regaddr == SDIO_CCCR_ABORT) ||
118 (regaddr == SDIO_CCCR_IENx)) {
119 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
120 GFP_KERNEL);
121 if (!sdfunc)
122 return -ENOMEM;
123 sdfunc->num = 0;
124 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
125 kfree(sdfunc);
126 } else if (regaddr < 0xF0) {
127 brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
128 err_ret = -EPERM;
129 } else {
130 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
131 }
132
133 return err_ret;
134 }
135
brcmf_sdioh_request_byte(struct brcmf_sdio_dev * sdiodev,uint rw,uint func,uint regaddr,u8 * byte)136 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
137 uint regaddr, u8 *byte)
138 {
139 int err_ret;
140
141 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
142
143 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
144 if (brcmf_pm_resume_error(sdiodev))
145 return -EIO;
146
147 if (rw && func == 0) {
148 /* handle F0 separately */
149 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
150 } else {
151 if (rw) /* CMD52 Write */
152 sdio_writeb(sdiodev->func[func], *byte, regaddr,
153 &err_ret);
154 else if (func == 0) {
155 *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
156 &err_ret);
157 } else {
158 *byte = sdio_readb(sdiodev->func[func], regaddr,
159 &err_ret);
160 }
161 }
162
163 if (err_ret)
164 brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
165 rw ? "write" : "read", func, regaddr, *byte, err_ret);
166
167 return err_ret;
168 }
169
brcmf_sdioh_request_word(struct brcmf_sdio_dev * sdiodev,uint rw,uint func,uint addr,u32 * word,uint nbytes)170 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
171 uint rw, uint func, uint addr, u32 *word,
172 uint nbytes)
173 {
174 int err_ret = -EIO;
175
176 if (func == 0) {
177 brcmf_err("Only CMD52 allowed to F0\n");
178 return -EINVAL;
179 }
180
181 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
182 rw, func, addr, nbytes);
183
184 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
185 if (brcmf_pm_resume_error(sdiodev))
186 return -EIO;
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_err("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_err("Invalid nbytes: %d\n", nbytes);
205 }
206
207 if (err_ret)
208 brcmf_err("Failed to %s word, Err: 0x%08x\n",
209 rw ? "write" : "read", err_ret);
210
211 return err_ret;
212 }
213
214 /* precondition: host controller is claimed */
215 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)216 brcmf_sdioh_request_data(struct brcmf_sdio_dev *sdiodev, uint write, bool fifo,
217 uint func, uint addr, struct sk_buff *pkt, uint pktlen)
218 {
219 int err_ret = 0;
220
221 if ((write) && (!fifo)) {
222 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
223 ((u8 *) (pkt->data)), pktlen);
224 } else if (write) {
225 err_ret = sdio_memcpy_toio(sdiodev->func[func], addr,
226 ((u8 *) (pkt->data)), pktlen);
227 } else if (fifo) {
228 err_ret = sdio_readsb(sdiodev->func[func],
229 ((u8 *) (pkt->data)), addr, pktlen);
230 } else {
231 err_ret = sdio_memcpy_fromio(sdiodev->func[func],
232 ((u8 *) (pkt->data)),
233 addr, pktlen);
234 }
235
236 return err_ret;
237 }
238
239 /*
240 * This function takes a queue of packets. The packets on the queue
241 * are assumed to be properly aligned by the caller.
242 */
243 int
brcmf_sdioh_request_chain(struct brcmf_sdio_dev * sdiodev,uint fix_inc,uint write,uint func,uint addr,struct sk_buff_head * pktq)244 brcmf_sdioh_request_chain(struct brcmf_sdio_dev *sdiodev, uint fix_inc,
245 uint write, uint func, uint addr,
246 struct sk_buff_head *pktq)
247 {
248 bool fifo = (fix_inc == SDIOH_DATA_FIX);
249 u32 SGCount = 0;
250 int err_ret = 0;
251
252 struct sk_buff *pkt;
253
254 brcmf_dbg(SDIO, "Enter\n");
255
256 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_chain_wait);
257 if (brcmf_pm_resume_error(sdiodev))
258 return -EIO;
259
260 skb_queue_walk(pktq, pkt) {
261 uint pkt_len = pkt->len;
262 pkt_len += 3;
263 pkt_len &= 0xFFFFFFFC;
264
265 err_ret = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
266 addr, pkt, pkt_len);
267 if (err_ret) {
268 brcmf_err("%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
269 write ? "TX" : "RX", pkt, SGCount, addr,
270 pkt_len, err_ret);
271 } else {
272 brcmf_dbg(SDIO, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n",
273 write ? "TX" : "RX", pkt, SGCount, addr,
274 pkt_len);
275 }
276 if (!fifo)
277 addr += pkt_len;
278
279 SGCount++;
280 }
281
282 brcmf_dbg(SDIO, "Exit\n");
283 return err_ret;
284 }
285
286 /*
287 * This function takes a single DMA-able packet.
288 */
brcmf_sdioh_request_buffer(struct brcmf_sdio_dev * sdiodev,uint fix_inc,uint write,uint func,uint addr,struct sk_buff * pkt)289 int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev,
290 uint fix_inc, uint write, uint func, uint addr,
291 struct sk_buff *pkt)
292 {
293 int status;
294 uint pkt_len;
295 bool fifo = (fix_inc == SDIOH_DATA_FIX);
296
297 brcmf_dbg(SDIO, "Enter\n");
298
299 if (pkt == NULL)
300 return -EINVAL;
301 pkt_len = pkt->len;
302
303 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait);
304 if (brcmf_pm_resume_error(sdiodev))
305 return -EIO;
306
307 pkt_len += 3;
308 pkt_len &= (uint)~3;
309
310 status = brcmf_sdioh_request_data(sdiodev, write, fifo, func,
311 addr, pkt, pkt_len);
312 if (status) {
313 brcmf_err("%s FAILED %p, addr=0x%05x, pkt_len=%d, ERR=0x%08x\n",
314 write ? "TX" : "RX", pkt, addr, pkt_len, status);
315 } else {
316 brcmf_dbg(SDIO, "%s xfr'd %p, addr=0x%05x, len=%d\n",
317 write ? "TX" : "RX", pkt, addr, pkt_len);
318 }
319
320 return status;
321 }
322
brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev * sdiodev,u32 regaddr)323 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
324 {
325 /* read 24 bits and return valid 17 bit addr */
326 int i, ret;
327 u32 scratch, regdata;
328 __le32 scratch_le;
329 u8 *ptr = (u8 *)&scratch_le;
330
331 for (i = 0; i < 3; i++) {
332 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
333 if (ret != 0)
334 brcmf_err("Can't read!\n");
335
336 *ptr++ = (u8) regdata;
337 regaddr++;
338 }
339
340 /* Only the lower 17-bits are valid */
341 scratch = le32_to_cpu(scratch_le);
342 scratch &= 0x0001FFFF;
343 return scratch;
344 }
345
brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev * sdiodev)346 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
347 {
348 int err_ret;
349 u32 fbraddr;
350 u8 func;
351
352 brcmf_dbg(SDIO, "\n");
353
354 /* Get the Card's common CIS address */
355 sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
356 SDIO_CCCR_CIS);
357 brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
358 sdiodev->func_cis_ptr[0]);
359
360 /* Get the Card's function CIS (for each function) */
361 for (fbraddr = SDIO_FBR_BASE(1), func = 1;
362 func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
363 sdiodev->func_cis_ptr[func] =
364 brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
365 brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
366 func, sdiodev->func_cis_ptr[func]);
367 }
368
369 /* Enable Function 1 */
370 err_ret = sdio_enable_func(sdiodev->func[1]);
371 if (err_ret)
372 brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
373
374 return false;
375 }
376
377 /*
378 * Public entry points & extern's
379 */
brcmf_sdioh_attach(struct brcmf_sdio_dev * sdiodev)380 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
381 {
382 int err_ret = 0;
383
384 brcmf_dbg(SDIO, "\n");
385
386 sdiodev->num_funcs = 2;
387
388 sdio_claim_host(sdiodev->func[1]);
389
390 err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
391 if (err_ret) {
392 brcmf_err("Failed to set F1 blocksize\n");
393 goto out;
394 }
395
396 err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
397 if (err_ret) {
398 brcmf_err("Failed to set F2 blocksize\n");
399 goto out;
400 }
401
402 brcmf_sdioh_enablefuncs(sdiodev);
403
404 out:
405 sdio_release_host(sdiodev->func[1]);
406 brcmf_dbg(SDIO, "Done\n");
407 return err_ret;
408 }
409
brcmf_sdioh_detach(struct brcmf_sdio_dev * sdiodev)410 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
411 {
412 brcmf_dbg(SDIO, "\n");
413
414 /* Disable Function 2 */
415 sdio_claim_host(sdiodev->func[2]);
416 sdio_disable_func(sdiodev->func[2]);
417 sdio_release_host(sdiodev->func[2]);
418
419 /* Disable Function 1 */
420 sdio_claim_host(sdiodev->func[1]);
421 sdio_disable_func(sdiodev->func[1]);
422 sdio_release_host(sdiodev->func[1]);
423
424 }
425
brcmf_ops_sdio_probe(struct sdio_func * func,const struct sdio_device_id * id)426 static int brcmf_ops_sdio_probe(struct sdio_func *func,
427 const struct sdio_device_id *id)
428 {
429 int err;
430 struct brcmf_sdio_dev *sdiodev;
431 struct brcmf_bus *bus_if;
432
433 brcmf_dbg(SDIO, "Enter\n");
434 brcmf_dbg(SDIO, "Class=%x\n", func->class);
435 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
436 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
437 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
438
439 /* Consume func num 1 but dont do anything with it. */
440 if (func->num == 1)
441 return 0;
442
443 /* Ignore anything but func 2 */
444 if (func->num != 2)
445 return -ENODEV;
446
447 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
448 if (!bus_if)
449 return -ENOMEM;
450 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
451 if (!sdiodev) {
452 kfree(bus_if);
453 return -ENOMEM;
454 }
455
456 sdiodev->func[0] = func->card->sdio_func[0];
457 sdiodev->func[1] = func->card->sdio_func[0];
458 sdiodev->func[2] = func;
459
460 sdiodev->bus_if = bus_if;
461 bus_if->bus_priv.sdio = sdiodev;
462 bus_if->align = BRCMF_SDALIGN;
463 dev_set_drvdata(&func->dev, bus_if);
464 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
465 sdiodev->dev = &sdiodev->func[1]->dev;
466 sdiodev->pdata = brcmfmac_sdio_pdata;
467
468 atomic_set(&sdiodev->suspend, false);
469 init_waitqueue_head(&sdiodev->request_byte_wait);
470 init_waitqueue_head(&sdiodev->request_word_wait);
471 init_waitqueue_head(&sdiodev->request_chain_wait);
472 init_waitqueue_head(&sdiodev->request_buffer_wait);
473
474 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
475 err = brcmf_sdio_probe(sdiodev);
476 if (err) {
477 brcmf_err("F2 error, probe failed %d...\n", err);
478 goto fail;
479 }
480 brcmf_dbg(SDIO, "F2 init completed...\n");
481 return 0;
482
483 fail:
484 dev_set_drvdata(&func->dev, NULL);
485 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
486 kfree(sdiodev);
487 kfree(bus_if);
488 return err;
489 }
490
brcmf_ops_sdio_remove(struct sdio_func * func)491 static void brcmf_ops_sdio_remove(struct sdio_func *func)
492 {
493 struct brcmf_bus *bus_if;
494 struct brcmf_sdio_dev *sdiodev;
495
496 brcmf_dbg(SDIO, "Enter\n");
497 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
498 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
499 brcmf_dbg(SDIO, "Function: %d\n", func->num);
500
501 if (func->num != 1 && func->num != 2)
502 return;
503
504 bus_if = dev_get_drvdata(&func->dev);
505 if (bus_if) {
506 sdiodev = bus_if->bus_priv.sdio;
507 brcmf_sdio_remove(sdiodev);
508
509 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
510 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
511
512 kfree(bus_if);
513 kfree(sdiodev);
514 }
515
516 brcmf_dbg(SDIO, "Exit\n");
517 }
518
519 #ifdef CONFIG_PM_SLEEP
brcmf_sdio_suspend(struct device * dev)520 static int brcmf_sdio_suspend(struct device *dev)
521 {
522 mmc_pm_flag_t sdio_flags;
523 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
524 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
525 int ret = 0;
526
527 brcmf_dbg(SDIO, "\n");
528
529 atomic_set(&sdiodev->suspend, true);
530
531 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
532 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
533 brcmf_err("Host can't keep power while suspended\n");
534 return -EINVAL;
535 }
536
537 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
538 if (ret) {
539 brcmf_err("Failed to set pm_flags\n");
540 return ret;
541 }
542
543 brcmf_sdio_wdtmr_enable(sdiodev, false);
544
545 return ret;
546 }
547
brcmf_sdio_resume(struct device * dev)548 static int brcmf_sdio_resume(struct device *dev)
549 {
550 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
551 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
552
553 brcmf_sdio_wdtmr_enable(sdiodev, true);
554 atomic_set(&sdiodev->suspend, false);
555 return 0;
556 }
557
558 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
559 .suspend = brcmf_sdio_suspend,
560 .resume = brcmf_sdio_resume,
561 };
562 #endif /* CONFIG_PM_SLEEP */
563
564 static struct sdio_driver brcmf_sdmmc_driver = {
565 .probe = brcmf_ops_sdio_probe,
566 .remove = brcmf_ops_sdio_remove,
567 .name = BRCMFMAC_SDIO_PDATA_NAME,
568 .id_table = brcmf_sdmmc_ids,
569 #ifdef CONFIG_PM_SLEEP
570 .drv = {
571 .pm = &brcmf_sdio_pm_ops,
572 },
573 #endif /* CONFIG_PM_SLEEP */
574 };
575
brcmf_sdio_pd_probe(struct platform_device * pdev)576 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
577 {
578 int ret;
579
580 brcmf_dbg(SDIO, "Enter\n");
581
582 brcmfmac_sdio_pdata = pdev->dev.platform_data;
583
584 if (brcmfmac_sdio_pdata->power_on)
585 brcmfmac_sdio_pdata->power_on();
586
587 ret = sdio_register_driver(&brcmf_sdmmc_driver);
588 if (ret)
589 brcmf_err("sdio_register_driver failed: %d\n", ret);
590
591 return ret;
592 }
593
brcmf_sdio_pd_remove(struct platform_device * pdev)594 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
595 {
596 brcmf_dbg(SDIO, "Enter\n");
597
598 if (brcmfmac_sdio_pdata->power_off)
599 brcmfmac_sdio_pdata->power_off();
600
601 sdio_unregister_driver(&brcmf_sdmmc_driver);
602
603 return 0;
604 }
605
606 static struct platform_driver brcmf_sdio_pd = {
607 .remove = brcmf_sdio_pd_remove,
608 .driver = {
609 .name = BRCMFMAC_SDIO_PDATA_NAME
610 }
611 };
612
brcmf_sdio_exit(void)613 void brcmf_sdio_exit(void)
614 {
615 brcmf_dbg(SDIO, "Enter\n");
616
617 if (brcmfmac_sdio_pdata)
618 platform_driver_unregister(&brcmf_sdio_pd);
619 else
620 sdio_unregister_driver(&brcmf_sdmmc_driver);
621 }
622
brcmf_sdio_init(void)623 void brcmf_sdio_init(void)
624 {
625 int ret;
626
627 brcmf_dbg(SDIO, "Enter\n");
628
629 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
630 if (ret == -ENODEV) {
631 brcmf_dbg(SDIO, "No platform data available, registering without.\n");
632 ret = sdio_register_driver(&brcmf_sdmmc_driver);
633 }
634
635 if (ret)
636 brcmf_err("driver registration failed: %d\n", ret);
637 }
638