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5b435de0 AS |
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 | #include <linux/types.h> | |
17 | #include <linux/netdevice.h> | |
18 | #include <linux/mmc/sdio.h> | |
19 | #include <linux/mmc/core.h> | |
20 | #include <linux/mmc/sdio_func.h> | |
21 | #include <linux/mmc/sdio_ids.h> | |
22 | #include <linux/mmc/card.h> | |
23 | #include <linux/suspend.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/sched.h> /* request_irq() */ | |
26 | #include <net/cfg80211.h> | |
27 | ||
28 | #include <defs.h> | |
29 | #include <brcm_hw_ids.h> | |
30 | #include <brcmu_utils.h> | |
31 | #include <brcmu_wifi.h> | |
32 | #include "sdio_host.h" | |
33 | #include "dhd.h" | |
34 | #include "dhd_dbg.h" | |
35 | #include "wl_cfg80211.h" | |
36 | ||
37 | #define SDIO_VENDOR_ID_BROADCOM 0x02d0 | |
38 | ||
39 | #define DMA_ALIGN_MASK 0x03 | |
40 | ||
41 | #define SDIO_DEVICE_ID_BROADCOM_4329 0x4329 | |
42 | ||
43 | #define SDIO_FUNC1_BLOCKSIZE 64 | |
44 | #define SDIO_FUNC2_BLOCKSIZE 512 | |
45 | ||
46 | /* devices we support, null terminated */ | |
47 | static const struct sdio_device_id brcmf_sdmmc_ids[] = { | |
48 | {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)}, | |
49 | { /* end: all zeroes */ }, | |
50 | }; | |
51 | MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); | |
52 | ||
53 | static bool | |
54 | brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev) | |
55 | { | |
56 | bool is_err = false; | |
57 | #ifdef CONFIG_PM_SLEEP | |
58 | is_err = atomic_read(&sdiodev->suspend); | |
59 | #endif | |
60 | return is_err; | |
61 | } | |
62 | ||
63 | static void | |
64 | brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq) | |
65 | { | |
66 | #ifdef CONFIG_PM_SLEEP | |
67 | int retry = 0; | |
68 | while (atomic_read(&sdiodev->suspend) && retry++ != 30) | |
69 | wait_event_timeout(*wq, false, HZ/100); | |
70 | #endif | |
71 | } | |
72 | ||
73 | static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev, | |
74 | uint regaddr, u8 *byte) | |
75 | { | |
76 | struct sdio_func *sdfunc = sdiodev->func[0]; | |
77 | int err_ret; | |
78 | ||
79 | /* | |
80 | * Can only directly write to some F0 registers. | |
81 | * Handle F2 enable/disable and Abort command | |
82 | * as a special case. | |
83 | */ | |
84 | if (regaddr == SDIO_CCCR_IOEx) { | |
85 | sdfunc = sdiodev->func[2]; | |
86 | if (sdfunc) { | |
87 | sdio_claim_host(sdfunc); | |
88 | if (*byte & SDIO_FUNC_ENABLE_2) { | |
89 | /* Enable Function 2 */ | |
90 | err_ret = sdio_enable_func(sdfunc); | |
91 | if (err_ret) | |
92 | brcmf_dbg(ERROR, | |
93 | "enable F2 failed:%d\n", | |
94 | err_ret); | |
95 | } else { | |
96 | /* Disable Function 2 */ | |
97 | err_ret = sdio_disable_func(sdfunc); | |
98 | if (err_ret) | |
99 | brcmf_dbg(ERROR, | |
100 | "Disable F2 failed:%d\n", | |
101 | err_ret); | |
102 | } | |
103 | sdio_release_host(sdfunc); | |
104 | } | |
105 | } else if (regaddr == SDIO_CCCR_ABORT) { | |
106 | sdio_claim_host(sdfunc); | |
107 | sdio_writeb(sdfunc, *byte, regaddr, &err_ret); | |
108 | sdio_release_host(sdfunc); | |
109 | } else if (regaddr < 0xF0) { | |
110 | brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr); | |
111 | err_ret = -EPERM; | |
112 | } else { | |
113 | sdio_claim_host(sdfunc); | |
114 | sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret); | |
115 | sdio_release_host(sdfunc); | |
116 | } | |
117 | ||
118 | return err_ret; | |
119 | } | |
120 | ||
121 | int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func, | |
122 | uint regaddr, u8 *byte) | |
123 | { | |
124 | int err_ret; | |
125 | ||
126 | brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr); | |
127 | ||
128 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait); | |
129 | if (brcmf_pm_resume_error(sdiodev)) | |
130 | return -EIO; | |
131 | ||
132 | if (rw && func == 0) { | |
133 | /* handle F0 separately */ | |
134 | err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte); | |
135 | } else { | |
136 | sdio_claim_host(sdiodev->func[func]); | |
137 | if (rw) /* CMD52 Write */ | |
138 | sdio_writeb(sdiodev->func[func], *byte, regaddr, | |
139 | &err_ret); | |
140 | else if (func == 0) { | |
141 | *byte = sdio_f0_readb(sdiodev->func[func], regaddr, | |
142 | &err_ret); | |
143 | } else { | |
144 | *byte = sdio_readb(sdiodev->func[func], regaddr, | |
145 | &err_ret); | |
146 | } | |
147 | sdio_release_host(sdiodev->func[func]); | |
148 | } | |
149 | ||
150 | if (err_ret) | |
151 | brcmf_dbg(ERROR, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n", | |
152 | rw ? "write" : "read", func, regaddr, *byte, err_ret); | |
153 | ||
154 | return err_ret; | |
155 | } | |
156 | ||
157 | int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev, | |
158 | uint rw, uint func, uint addr, u32 *word, | |
159 | uint nbytes) | |
160 | { | |
161 | int err_ret = -EIO; | |
162 | ||
163 | if (func == 0) { | |
164 | brcmf_dbg(ERROR, "Only CMD52 allowed to F0\n"); | |
165 | return -EINVAL; | |
166 | } | |
167 | ||
168 | brcmf_dbg(INFO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", | |
169 | rw, func, addr, nbytes); | |
170 | ||
171 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait); | |
172 | if (brcmf_pm_resume_error(sdiodev)) | |
173 | return -EIO; | |
174 | /* Claim host controller */ | |
175 | sdio_claim_host(sdiodev->func[func]); | |
176 | ||
177 | if (rw) { /* CMD52 Write */ | |
178 | if (nbytes == 4) | |
179 | sdio_writel(sdiodev->func[func], *word, addr, | |
180 | &err_ret); | |
181 | else if (nbytes == 2) | |
182 | sdio_writew(sdiodev->func[func], (*word & 0xFFFF), | |
183 | addr, &err_ret); | |
184 | else | |
185 | brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes); | |
186 | } else { /* CMD52 Read */ | |
187 | if (nbytes == 4) | |
188 | *word = sdio_readl(sdiodev->func[func], addr, &err_ret); | |
189 | else if (nbytes == 2) | |
190 | *word = sdio_readw(sdiodev->func[func], addr, | |
191 | &err_ret) & 0xFFFF; | |
192 | else | |
193 | brcmf_dbg(ERROR, "Invalid nbytes: %d\n", nbytes); | |
194 | } | |
195 | ||
196 | /* Release host controller */ | |
197 | sdio_release_host(sdiodev->func[func]); | |
198 | ||
199 | if (err_ret) | |
200 | brcmf_dbg(ERROR, "Failed to %s word, Err: 0x%08x\n", | |
201 | rw ? "write" : "read", err_ret); | |
202 | ||
203 | return err_ret; | |
204 | } | |
205 | ||
206 | static int | |
207 | brcmf_sdioh_request_packet(struct brcmf_sdio_dev *sdiodev, uint fix_inc, | |
208 | uint write, uint func, uint addr, | |
209 | struct sk_buff *pkt) | |
210 | { | |
211 | bool fifo = (fix_inc == SDIOH_DATA_FIX); | |
212 | u32 SGCount = 0; | |
213 | int err_ret = 0; | |
214 | ||
215 | struct sk_buff *pnext; | |
216 | ||
217 | brcmf_dbg(TRACE, "Enter\n"); | |
218 | ||
219 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_packet_wait); | |
220 | if (brcmf_pm_resume_error(sdiodev)) | |
221 | return -EIO; | |
222 | ||
223 | /* Claim host controller */ | |
224 | sdio_claim_host(sdiodev->func[func]); | |
225 | for (pnext = pkt; pnext; pnext = pnext->next) { | |
226 | uint pkt_len = pnext->len; | |
227 | pkt_len += 3; | |
228 | pkt_len &= 0xFFFFFFFC; | |
229 | ||
230 | if ((write) && (!fifo)) { | |
231 | err_ret = sdio_memcpy_toio(sdiodev->func[func], addr, | |
232 | ((u8 *) (pnext->data)), | |
233 | pkt_len); | |
234 | } else if (write) { | |
235 | err_ret = sdio_memcpy_toio(sdiodev->func[func], addr, | |
236 | ((u8 *) (pnext->data)), | |
237 | pkt_len); | |
238 | } else if (fifo) { | |
239 | err_ret = sdio_readsb(sdiodev->func[func], | |
240 | ((u8 *) (pnext->data)), | |
241 | addr, pkt_len); | |
242 | } else { | |
243 | err_ret = sdio_memcpy_fromio(sdiodev->func[func], | |
244 | ((u8 *) (pnext->data)), | |
245 | addr, pkt_len); | |
246 | } | |
247 | ||
248 | if (err_ret) { | |
249 | brcmf_dbg(ERROR, "%s FAILED %p[%d], addr=0x%05x, pkt_len=%d, ERR=0x%08x\n", | |
250 | write ? "TX" : "RX", pnext, SGCount, addr, | |
251 | pkt_len, err_ret); | |
252 | } else { | |
253 | brcmf_dbg(TRACE, "%s xfr'd %p[%d], addr=0x%05x, len=%d\n", | |
254 | write ? "TX" : "RX", pnext, SGCount, addr, | |
255 | pkt_len); | |
256 | } | |
257 | ||
258 | if (!fifo) | |
259 | addr += pkt_len; | |
260 | SGCount++; | |
261 | ||
262 | } | |
263 | ||
264 | /* Release host controller */ | |
265 | sdio_release_host(sdiodev->func[func]); | |
266 | ||
267 | brcmf_dbg(TRACE, "Exit\n"); | |
268 | return err_ret; | |
269 | } | |
270 | ||
271 | /* | |
272 | * This function takes a buffer or packet, and fixes everything up | |
273 | * so that in the end, a DMA-able packet is created. | |
274 | * | |
275 | * A buffer does not have an associated packet pointer, | |
276 | * and may or may not be aligned. | |
277 | * A packet may consist of a single packet, or a packet chain. | |
278 | * If it is a packet chain, then all the packets in the chain | |
279 | * must be properly aligned. | |
280 | * | |
281 | * If the packet data is not aligned, then there may only be | |
282 | * one packet, and in this case, it is copied to a new | |
283 | * aligned packet. | |
284 | * | |
285 | */ | |
286 | int brcmf_sdioh_request_buffer(struct brcmf_sdio_dev *sdiodev, | |
287 | uint fix_inc, uint write, uint func, uint addr, | |
288 | uint reg_width, uint buflen_u, u8 *buffer, | |
289 | struct sk_buff *pkt) | |
290 | { | |
291 | int Status; | |
292 | struct sk_buff *mypkt = NULL; | |
293 | ||
294 | brcmf_dbg(TRACE, "Enter\n"); | |
295 | ||
296 | brcmf_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); | |
297 | if (brcmf_pm_resume_error(sdiodev)) | |
298 | return -EIO; | |
299 | /* Case 1: we don't have a packet. */ | |
300 | if (pkt == NULL) { | |
301 | brcmf_dbg(DATA, "Creating new %s Packet, len=%d\n", | |
302 | write ? "TX" : "RX", buflen_u); | |
303 | mypkt = brcmu_pkt_buf_get_skb(buflen_u); | |
304 | if (!mypkt) { | |
305 | brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n", | |
306 | buflen_u); | |
307 | return -EIO; | |
308 | } | |
309 | ||
310 | /* For a write, copy the buffer data into the packet. */ | |
311 | if (write) | |
312 | memcpy(mypkt->data, buffer, buflen_u); | |
313 | ||
314 | Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write, | |
315 | func, addr, mypkt); | |
316 | ||
317 | /* For a read, copy the packet data back to the buffer. */ | |
318 | if (!write) | |
319 | memcpy(buffer, mypkt->data, buflen_u); | |
320 | ||
321 | brcmu_pkt_buf_free_skb(mypkt); | |
322 | } else if (((ulong) (pkt->data) & DMA_ALIGN_MASK) != 0) { | |
323 | /* | |
324 | * Case 2: We have a packet, but it is unaligned. | |
325 | * In this case, we cannot have a chain (pkt->next == NULL) | |
326 | */ | |
327 | brcmf_dbg(DATA, "Creating aligned %s Packet, len=%d\n", | |
328 | write ? "TX" : "RX", pkt->len); | |
329 | mypkt = brcmu_pkt_buf_get_skb(pkt->len); | |
330 | if (!mypkt) { | |
331 | brcmf_dbg(ERROR, "brcmu_pkt_buf_get_skb failed: len %d\n", | |
332 | pkt->len); | |
333 | return -EIO; | |
334 | } | |
335 | ||
336 | /* For a write, copy the buffer data into the packet. */ | |
337 | if (write) | |
338 | memcpy(mypkt->data, pkt->data, pkt->len); | |
339 | ||
340 | Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write, | |
341 | func, addr, mypkt); | |
342 | ||
343 | /* For a read, copy the packet data back to the buffer. */ | |
344 | if (!write) | |
345 | memcpy(pkt->data, mypkt->data, mypkt->len); | |
346 | ||
347 | brcmu_pkt_buf_free_skb(mypkt); | |
348 | } else { /* case 3: We have a packet and | |
349 | it is aligned. */ | |
350 | brcmf_dbg(DATA, "Aligned %s Packet, direct DMA\n", | |
351 | write ? "Tx" : "Rx"); | |
352 | Status = brcmf_sdioh_request_packet(sdiodev, fix_inc, write, | |
353 | func, addr, pkt); | |
354 | } | |
355 | ||
356 | return Status; | |
357 | } | |
358 | ||
359 | /* Read client card reg */ | |
360 | static int | |
361 | brcmf_sdioh_card_regread(struct brcmf_sdio_dev *sdiodev, int func, u32 regaddr, | |
362 | int regsize, u32 *data) | |
363 | { | |
364 | ||
365 | if ((func == 0) || (regsize == 1)) { | |
366 | u8 temp = 0; | |
367 | ||
368 | brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, func, regaddr, | |
369 | &temp); | |
370 | *data = temp; | |
371 | *data &= 0xff; | |
372 | brcmf_dbg(DATA, "byte read data=0x%02x\n", *data); | |
373 | } else { | |
374 | brcmf_sdioh_request_word(sdiodev, SDIOH_READ, func, regaddr, | |
375 | data, regsize); | |
376 | if (regsize == 2) | |
377 | *data &= 0xffff; | |
378 | ||
379 | brcmf_dbg(DATA, "word read data=0x%08x\n", *data); | |
380 | } | |
381 | ||
382 | return SUCCESS; | |
383 | } | |
384 | ||
385 | static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr) | |
386 | { | |
387 | /* read 24 bits and return valid 17 bit addr */ | |
388 | int i; | |
389 | u32 scratch, regdata; | |
390 | __le32 scratch_le; | |
391 | u8 *ptr = (u8 *)&scratch_le; | |
392 | ||
393 | for (i = 0; i < 3; i++) { | |
394 | if ((brcmf_sdioh_card_regread(sdiodev, 0, regaddr, 1, | |
395 | ®data)) != SUCCESS) | |
396 | brcmf_dbg(ERROR, "Can't read!\n"); | |
397 | ||
398 | *ptr++ = (u8) regdata; | |
399 | regaddr++; | |
400 | } | |
401 | ||
402 | /* Only the lower 17-bits are valid */ | |
403 | scratch = le32_to_cpu(scratch_le); | |
404 | scratch &= 0x0001FFFF; | |
405 | return scratch; | |
406 | } | |
407 | ||
408 | static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev) | |
409 | { | |
410 | int err_ret; | |
411 | u32 fbraddr; | |
412 | u8 func; | |
413 | ||
414 | brcmf_dbg(TRACE, "\n"); | |
415 | ||
416 | /* Get the Card's common CIS address */ | |
417 | sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev, | |
418 | SDIO_CCCR_CIS); | |
419 | brcmf_dbg(INFO, "Card's Common CIS Ptr = 0x%x\n", | |
420 | sdiodev->func_cis_ptr[0]); | |
421 | ||
422 | /* Get the Card's function CIS (for each function) */ | |
423 | for (fbraddr = SDIO_FBR_BASE(1), func = 1; | |
424 | func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) { | |
425 | sdiodev->func_cis_ptr[func] = | |
426 | brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr); | |
427 | brcmf_dbg(INFO, "Function %d CIS Ptr = 0x%x\n", | |
428 | func, sdiodev->func_cis_ptr[func]); | |
429 | } | |
430 | ||
431 | /* Enable Function 1 */ | |
432 | sdio_claim_host(sdiodev->func[1]); | |
433 | err_ret = sdio_enable_func(sdiodev->func[1]); | |
434 | sdio_release_host(sdiodev->func[1]); | |
435 | if (err_ret) | |
436 | brcmf_dbg(ERROR, "Failed to enable F1 Err: 0x%08x\n", err_ret); | |
437 | ||
438 | return false; | |
439 | } | |
440 | ||
441 | /* | |
442 | * Public entry points & extern's | |
443 | */ | |
444 | int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev) | |
445 | { | |
446 | int err_ret = 0; | |
447 | ||
448 | brcmf_dbg(TRACE, "\n"); | |
449 | ||
450 | sdiodev->num_funcs = 2; | |
451 | ||
452 | sdio_claim_host(sdiodev->func[1]); | |
453 | err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); | |
454 | sdio_release_host(sdiodev->func[1]); | |
455 | if (err_ret) { | |
456 | brcmf_dbg(ERROR, "Failed to set F1 blocksize\n"); | |
457 | goto out; | |
458 | } | |
459 | ||
460 | sdio_claim_host(sdiodev->func[2]); | |
461 | err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); | |
462 | sdio_release_host(sdiodev->func[2]); | |
463 | if (err_ret) { | |
464 | brcmf_dbg(ERROR, "Failed to set F2 blocksize\n"); | |
465 | goto out; | |
466 | } | |
467 | ||
468 | brcmf_sdioh_enablefuncs(sdiodev); | |
469 | ||
470 | out: | |
471 | brcmf_dbg(TRACE, "Done\n"); | |
472 | return err_ret; | |
473 | } | |
474 | ||
475 | void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev) | |
476 | { | |
477 | brcmf_dbg(TRACE, "\n"); | |
478 | ||
479 | /* Disable Function 2 */ | |
480 | sdio_claim_host(sdiodev->func[2]); | |
481 | sdio_disable_func(sdiodev->func[2]); | |
482 | sdio_release_host(sdiodev->func[2]); | |
483 | ||
484 | /* Disable Function 1 */ | |
485 | sdio_claim_host(sdiodev->func[1]); | |
486 | sdio_disable_func(sdiodev->func[1]); | |
487 | sdio_release_host(sdiodev->func[1]); | |
488 | ||
489 | } | |
490 | ||
491 | static int brcmf_ops_sdio_probe(struct sdio_func *func, | |
492 | const struct sdio_device_id *id) | |
493 | { | |
494 | int ret = 0; | |
495 | struct brcmf_sdio_dev *sdiodev; | |
496 | brcmf_dbg(TRACE, "Enter\n"); | |
497 | brcmf_dbg(TRACE, "func->class=%x\n", func->class); | |
498 | brcmf_dbg(TRACE, "sdio_vendor: 0x%04x\n", func->vendor); | |
499 | brcmf_dbg(TRACE, "sdio_device: 0x%04x\n", func->device); | |
500 | brcmf_dbg(TRACE, "Function#: 0x%04x\n", func->num); | |
501 | ||
502 | if (func->num == 1) { | |
503 | if (dev_get_drvdata(&func->card->dev)) { | |
504 | brcmf_dbg(ERROR, "card private drvdata occupied\n"); | |
505 | return -ENXIO; | |
506 | } | |
507 | sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); | |
508 | if (!sdiodev) | |
509 | return -ENOMEM; | |
510 | sdiodev->func[0] = func->card->sdio_func[0]; | |
511 | sdiodev->func[1] = func; | |
512 | dev_set_drvdata(&func->card->dev, sdiodev); | |
513 | ||
514 | atomic_set(&sdiodev->suspend, false); | |
515 | init_waitqueue_head(&sdiodev->request_byte_wait); | |
516 | init_waitqueue_head(&sdiodev->request_word_wait); | |
517 | init_waitqueue_head(&sdiodev->request_packet_wait); | |
518 | init_waitqueue_head(&sdiodev->request_buffer_wait); | |
519 | } | |
520 | ||
521 | if (func->num == 2) { | |
522 | sdiodev = dev_get_drvdata(&func->card->dev); | |
523 | if ((!sdiodev) || (sdiodev->func[1]->card != func->card)) | |
524 | return -ENODEV; | |
525 | sdiodev->func[2] = func; | |
526 | ||
527 | brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_probe...\n"); | |
528 | ret = brcmf_sdio_probe(sdiodev); | |
529 | } | |
530 | ||
531 | return ret; | |
532 | } | |
533 | ||
534 | static void brcmf_ops_sdio_remove(struct sdio_func *func) | |
535 | { | |
536 | struct brcmf_sdio_dev *sdiodev; | |
537 | brcmf_dbg(TRACE, "Enter\n"); | |
538 | brcmf_dbg(INFO, "func->class=%x\n", func->class); | |
539 | brcmf_dbg(INFO, "sdio_vendor: 0x%04x\n", func->vendor); | |
540 | brcmf_dbg(INFO, "sdio_device: 0x%04x\n", func->device); | |
541 | brcmf_dbg(INFO, "Function#: 0x%04x\n", func->num); | |
542 | ||
543 | if (func->num == 2) { | |
544 | sdiodev = dev_get_drvdata(&func->card->dev); | |
545 | brcmf_dbg(TRACE, "F2 found, calling brcmf_sdio_remove...\n"); | |
546 | brcmf_sdio_remove(sdiodev); | |
547 | dev_set_drvdata(&func->card->dev, NULL); | |
548 | kfree(sdiodev); | |
549 | } | |
550 | } | |
551 | ||
552 | #ifdef CONFIG_PM_SLEEP | |
553 | static int brcmf_sdio_suspend(struct device *dev) | |
554 | { | |
555 | mmc_pm_flag_t sdio_flags; | |
556 | struct brcmf_sdio_dev *sdiodev; | |
557 | struct sdio_func *func = dev_to_sdio_func(dev); | |
558 | int ret = 0; | |
559 | ||
560 | brcmf_dbg(TRACE, "\n"); | |
561 | ||
562 | sdiodev = dev_get_drvdata(&func->card->dev); | |
563 | ||
564 | atomic_set(&sdiodev->suspend, true); | |
565 | ||
566 | sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]); | |
567 | if (!(sdio_flags & MMC_PM_KEEP_POWER)) { | |
568 | brcmf_dbg(ERROR, "Host can't keep power while suspended\n"); | |
569 | return -EINVAL; | |
570 | } | |
571 | ||
572 | ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER); | |
573 | if (ret) { | |
574 | brcmf_dbg(ERROR, "Failed to set pm_flags\n"); | |
575 | return ret; | |
576 | } | |
577 | ||
578 | brcmf_sdio_wdtmr_enable(sdiodev, false); | |
579 | ||
580 | return ret; | |
581 | } | |
582 | ||
583 | static int brcmf_sdio_resume(struct device *dev) | |
584 | { | |
585 | struct brcmf_sdio_dev *sdiodev; | |
586 | struct sdio_func *func = dev_to_sdio_func(dev); | |
587 | ||
588 | sdiodev = dev_get_drvdata(&func->card->dev); | |
589 | brcmf_sdio_wdtmr_enable(sdiodev, true); | |
590 | atomic_set(&sdiodev->suspend, false); | |
591 | return 0; | |
592 | } | |
593 | ||
594 | static const struct dev_pm_ops brcmf_sdio_pm_ops = { | |
595 | .suspend = brcmf_sdio_suspend, | |
596 | .resume = brcmf_sdio_resume, | |
597 | }; | |
598 | #endif /* CONFIG_PM_SLEEP */ | |
599 | ||
600 | static struct sdio_driver brcmf_sdmmc_driver = { | |
601 | .probe = brcmf_ops_sdio_probe, | |
602 | .remove = brcmf_ops_sdio_remove, | |
603 | .name = "brcmfmac", | |
604 | .id_table = brcmf_sdmmc_ids, | |
605 | #ifdef CONFIG_PM_SLEEP | |
606 | .drv = { | |
607 | .pm = &brcmf_sdio_pm_ops, | |
608 | }, | |
609 | #endif /* CONFIG_PM_SLEEP */ | |
610 | }; | |
611 | ||
612 | /* bus register interface */ | |
613 | int brcmf_bus_register(void) | |
614 | { | |
615 | brcmf_dbg(TRACE, "Enter\n"); | |
616 | ||
617 | return sdio_register_driver(&brcmf_sdmmc_driver); | |
618 | } | |
619 | ||
620 | void brcmf_bus_unregister(void) | |
621 | { | |
622 | brcmf_dbg(TRACE, "Enter\n"); | |
623 | ||
624 | sdio_unregister_driver(&brcmf_sdmmc_driver); | |
625 | } |