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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/* ****************** SDIO CARD Interface Functions **************************/
17
18#include <linux/types.h>
19#include <linux/netdevice.h>
20#include <linux/pci.h>
21#include <linux/pci_ids.h>
22#include <linux/sched.h>
23#include <linux/completion.h>
24#include <linux/scatterlist.h>
25#include <linux/mmc/sdio.h>
26#include <linux/mmc/core.h>
27#include <linux/mmc/sdio_func.h>
28#include <linux/mmc/card.h>
29#include <linux/mmc/host.h>
30#include <linux/pm_runtime.h>
31#include <linux/suspend.h>
32#include <linux/errno.h>
33#include <linux/module.h>
34#include <linux/acpi.h>
35#include <net/cfg80211.h>
36
37#include <defs.h>
38#include <brcm_hw_ids.h>
39#include <brcmu_utils.h>
40#include <brcmu_wifi.h>
41#include <chipcommon.h>
42#include <soc.h>
43#include "chip.h"
44#include "bus.h"
45#include "debug.h"
46#include "sdio.h"
47#include "core.h"
48#include "common.h"
49
50#define SDIOH_API_ACCESS_RETRY_LIMIT 2
51
52#define DMA_ALIGN_MASK 0x03
53
54#define SDIO_FUNC1_BLOCKSIZE 64
55#define SDIO_FUNC2_BLOCKSIZE 512
56/* Maximum milliseconds to wait for F2 to come up */
57#define SDIO_WAIT_F2RDY 3000
58
59#define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
60
61struct brcmf_sdiod_freezer {
62 atomic_t freezing;
63 atomic_t thread_count;
64 u32 frozen_count;
65 wait_queue_head_t thread_freeze;
66 struct completion resumed;
67};
68
69static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
70{
71 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
72 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
73
74 brcmf_dbg(INTR, "OOB intr triggered\n");
75
76 /* out-of-band interrupt is level-triggered which won't
77 * be cleared until dpc
78 */
79 if (sdiodev->irq_en) {
80 disable_irq_nosync(irq);
81 sdiodev->irq_en = false;
82 }
83
84 brcmf_sdio_isr(sdiodev->bus);
85
86 return IRQ_HANDLED;
87}
88
89static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
90{
91 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
92 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
93
94 brcmf_dbg(INTR, "IB intr triggered\n");
95
96 brcmf_sdio_isr(sdiodev->bus);
97}
98
99/* dummy handler for SDIO function 2 interrupt */
100static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
101{
102}
103
104int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
105{
106 struct brcmfmac_sdio_pd *pdata;
107 int ret = 0;
108 u8 data;
109 u32 addr, gpiocontrol;
110 unsigned long flags;
111
112 pdata = &sdiodev->settings->bus.sdio;
113 if (pdata->oob_irq_supported) {
114 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
115 pdata->oob_irq_nr);
116 ret = request_irq(pdata->oob_irq_nr, brcmf_sdiod_oob_irqhandler,
117 pdata->oob_irq_flags, "brcmf_oob_intr",
118 &sdiodev->func[1]->dev);
119 if (ret != 0) {
120 brcmf_err("request_irq failed %d\n", ret);
121 return ret;
122 }
123 sdiodev->oob_irq_requested = true;
124 spin_lock_init(&sdiodev->irq_en_lock);
125 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
126 sdiodev->irq_en = true;
127 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
128
129 ret = enable_irq_wake(pdata->oob_irq_nr);
130 if (ret != 0) {
131 brcmf_err("enable_irq_wake failed %d\n", ret);
132 return ret;
133 }
134 sdiodev->irq_wake = true;
135
136 sdio_claim_host(sdiodev->func[1]);
137
138 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
139 /* assign GPIO to SDIO core */
140 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
141 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
142 gpiocontrol |= 0x2;
143 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
144
145 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
146 &ret);
147 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
148 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
149 }
150
151 /* must configure SDIO_CCCR_IENx to enable irq */
152 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
153 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
154 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
155
156 /* redirect, configure and enable io for interrupt signal */
157 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
158 if (pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
159 data |= SDIO_SEPINT_ACT_HI;
160 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
161
162 sdio_release_host(sdiodev->func[1]);
163 } else {
164 brcmf_dbg(SDIO, "Entering\n");
165 sdio_claim_host(sdiodev->func[1]);
166 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
167 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
168 sdio_release_host(sdiodev->func[1]);
169 }
170
171 return 0;
172}
173
174int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
175{
176 struct brcmfmac_sdio_pd *pdata;
177
178 brcmf_dbg(SDIO, "Entering\n");
179
180 pdata = &sdiodev->settings->bus.sdio;
181 if (pdata->oob_irq_supported) {
182 sdio_claim_host(sdiodev->func[1]);
183 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
184 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
185 sdio_release_host(sdiodev->func[1]);
186
187 if (sdiodev->oob_irq_requested) {
188 sdiodev->oob_irq_requested = false;
189 if (sdiodev->irq_wake) {
190 disable_irq_wake(pdata->oob_irq_nr);
191 sdiodev->irq_wake = false;
192 }
193 free_irq(pdata->oob_irq_nr, &sdiodev->func[1]->dev);
194 sdiodev->irq_en = false;
195 }
196 } else {
197 sdio_claim_host(sdiodev->func[1]);
198 sdio_release_irq(sdiodev->func[2]);
199 sdio_release_irq(sdiodev->func[1]);
200 sdio_release_host(sdiodev->func[1]);
201 }
202
203 return 0;
204}
205
206void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
207 enum brcmf_sdiod_state state)
208{
209 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
210 state == sdiodev->state)
211 return;
212
213 brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
214 switch (sdiodev->state) {
215 case BRCMF_SDIOD_DATA:
216 /* any other state means bus interface is down */
217 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
218 break;
219 case BRCMF_SDIOD_DOWN:
220 /* transition from DOWN to DATA means bus interface is up */
221 if (state == BRCMF_SDIOD_DATA)
222 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
223 break;
224 default:
225 break;
226 }
227 sdiodev->state = state;
228}
229
230static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
231 uint regaddr, u8 byte)
232{
233 int err_ret;
234
235 /*
236 * Can only directly write to some F0 registers.
237 * Handle CCCR_IENx and CCCR_ABORT command
238 * as a special case.
239 */
240 if ((regaddr == SDIO_CCCR_ABORT) ||
241 (regaddr == SDIO_CCCR_IENx))
242 sdio_writeb(func, byte, regaddr, &err_ret);
243 else
244 sdio_f0_writeb(func, byte, regaddr, &err_ret);
245
246 return err_ret;
247}
248
249static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
250 u32 addr, u8 regsz, void *data, bool write)
251{
252 struct sdio_func *func;
253 int ret = -EINVAL;
254
255 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
256 write, fn, addr, regsz);
257
258 /* only allow byte access on F0 */
259 if (WARN_ON(regsz > 1 && !fn))
260 return -EINVAL;
261 func = sdiodev->func[fn];
262
263 switch (regsz) {
264 case sizeof(u8):
265 if (write) {
266 if (fn)
267 sdio_writeb(func, *(u8 *)data, addr, &ret);
268 else
269 ret = brcmf_sdiod_f0_writeb(func, addr,
270 *(u8 *)data);
271 } else {
272 if (fn)
273 *(u8 *)data = sdio_readb(func, addr, &ret);
274 else
275 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
276 }
277 break;
278 case sizeof(u16):
279 if (write)
280 sdio_writew(func, *(u16 *)data, addr, &ret);
281 else
282 *(u16 *)data = sdio_readw(func, addr, &ret);
283 break;
284 case sizeof(u32):
285 if (write)
286 sdio_writel(func, *(u32 *)data, addr, &ret);
287 else
288 *(u32 *)data = sdio_readl(func, addr, &ret);
289 break;
290 default:
291 brcmf_err("invalid size: %d\n", regsz);
292 break;
293 }
294
295 if (ret)
296 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
297 write ? "write" : "read", fn, addr, ret);
298
299 return ret;
300}
301
302static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
303 u8 regsz, void *data, bool write)
304{
305 u8 func;
306 s32 retry = 0;
307 int ret;
308
309 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
310 return -ENOMEDIUM;
311
312 /*
313 * figure out how to read the register based on address range
314 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
315 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
316 * The rest: function 1 silicon backplane core registers
317 */
318 if ((addr & ~REG_F0_REG_MASK) == 0)
319 func = SDIO_FUNC_0;
320 else
321 func = SDIO_FUNC_1;
322
323 do {
324 if (!write)
325 memset(data, 0, regsz);
326 /* for retry wait for 1 ms till bus get settled down */
327 if (retry)
328 usleep_range(1000, 2000);
329 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
330 data, write);
331 } while (ret != 0 && ret != -ENOMEDIUM &&
332 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
333
334 if (ret == -ENOMEDIUM)
335 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
336 else if (ret != 0) {
337 /*
338 * SleepCSR register access can fail when
339 * waking up the device so reduce this noise
340 * in the logs.
341 */
342 if (addr != SBSDIO_FUNC1_SLEEPCSR)
343 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
344 write ? "write" : "read", func, addr, ret);
345 else
346 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
347 write ? "write" : "read", func, addr, ret);
348 }
349 return ret;
350}
351
352static int
353brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
354{
355 int err = 0, i;
356 u8 addr[3];
357
358 if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
359 return -ENOMEDIUM;
360
361 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
362 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
363 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
364
365 for (i = 0; i < 3; i++) {
366 err = brcmf_sdiod_regrw_helper(sdiodev,
367 SBSDIO_FUNC1_SBADDRLOW + i,
368 sizeof(u8), &addr[i], true);
369 if (err) {
370 brcmf_err("failed at addr: 0x%0x\n",
371 SBSDIO_FUNC1_SBADDRLOW + i);
372 break;
373 }
374 }
375
376 return err;
377}
378
379static int
380brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
381{
382 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
383 int err = 0;
384
385 if (bar0 != sdiodev->sbwad) {
386 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
387 if (err)
388 return err;
389
390 sdiodev->sbwad = bar0;
391 }
392
393 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
394
395 if (width == 4)
396 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
397
398 return 0;
399}
400
401u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
402{
403 u8 data;
404 int retval;
405
406 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
407 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
408 false);
409 brcmf_dbg(SDIO, "data:0x%02x\n", data);
410
411 if (ret)
412 *ret = retval;
413
414 return data;
415}
416
417u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
418{
419 u32 data;
420 int retval;
421
422 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
423 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
424 if (retval)
425 goto done;
426 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
427 false);
428 brcmf_dbg(SDIO, "data:0x%08x\n", data);
429
430done:
431 if (ret)
432 *ret = retval;
433
434 return data;
435}
436
437void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
438 u8 data, int *ret)
439{
440 int retval;
441
442 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
443 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
444 true);
445 if (ret)
446 *ret = retval;
447}
448
449void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
450 u32 data, int *ret)
451{
452 int retval;
453
454 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
455 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
456 if (retval)
457 goto done;
458 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
459 true);
460
461done:
462 if (ret)
463 *ret = retval;
464}
465
466static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
467 bool write, u32 addr, struct sk_buff *pkt)
468{
469 unsigned int req_sz;
470 int err;
471
472 /* Single skb use the standard mmc interface */
473 req_sz = pkt->len + 3;
474 req_sz &= (uint)~3;
475
476 if (write)
477 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
478 ((u8 *)(pkt->data)), req_sz);
479 else if (fn == 1)
480 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
481 addr, req_sz);
482 else
483 /* function 2 read is FIFO operation */
484 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
485 req_sz);
486 if (err == -ENOMEDIUM)
487 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
488 return err;
489}
490
491/**
492 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
493 * @sdiodev: brcmfmac sdio device
494 * @fn: SDIO function number
495 * @write: direction flag
496 * @addr: dongle memory address as source/destination
497 * @pkt: skb pointer
498 *
499 * This function takes the respbonsibility as the interface function to MMC
500 * stack for block data access. It assumes that the skb passed down by the
501 * caller has already been padded and aligned.
502 */
503static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
504 bool write, u32 addr,
505 struct sk_buff_head *pktlist)
506{
507 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
508 unsigned int max_req_sz, orig_offset, dst_offset;
509 unsigned short max_seg_cnt, seg_sz;
510 unsigned char *pkt_data, *orig_data, *dst_data;
511 struct sk_buff *pkt_next = NULL, *local_pkt_next;
512 struct sk_buff_head local_list, *target_list;
513 struct mmc_request mmc_req;
514 struct mmc_command mmc_cmd;
515 struct mmc_data mmc_dat;
516 struct scatterlist *sgl;
517 int ret = 0;
518
519 if (!pktlist->qlen)
520 return -EINVAL;
521
522 target_list = pktlist;
523 /* for host with broken sg support, prepare a page aligned list */
524 __skb_queue_head_init(&local_list);
525 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
526 req_sz = 0;
527 skb_queue_walk(pktlist, pkt_next)
528 req_sz += pkt_next->len;
529 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
530 while (req_sz > PAGE_SIZE) {
531 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
532 if (pkt_next == NULL) {
533 ret = -ENOMEM;
534 goto exit;
535 }
536 __skb_queue_tail(&local_list, pkt_next);
537 req_sz -= PAGE_SIZE;
538 }
539 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
540 if (pkt_next == NULL) {
541 ret = -ENOMEM;
542 goto exit;
543 }
544 __skb_queue_tail(&local_list, pkt_next);
545 target_list = &local_list;
546 }
547
548 func_blk_sz = sdiodev->func[fn]->cur_blksize;
549 max_req_sz = sdiodev->max_request_size;
550 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
551 target_list->qlen);
552 seg_sz = target_list->qlen;
553 pkt_offset = 0;
554 pkt_next = target_list->next;
555
556 memset(&mmc_req, 0, sizeof(struct mmc_request));
557 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
558 memset(&mmc_dat, 0, sizeof(struct mmc_data));
559
560 mmc_dat.sg = sdiodev->sgtable.sgl;
561 mmc_dat.blksz = func_blk_sz;
562 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
563 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
564 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
565 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
566 mmc_cmd.arg |= 1<<27; /* block mode */
567 /* for function 1 the addr will be incremented */
568 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
569 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
570 mmc_req.cmd = &mmc_cmd;
571 mmc_req.data = &mmc_dat;
572
573 while (seg_sz) {
574 req_sz = 0;
575 sg_cnt = 0;
576 sgl = sdiodev->sgtable.sgl;
577 /* prep sg table */
578 while (pkt_next != (struct sk_buff *)target_list) {
579 pkt_data = pkt_next->data + pkt_offset;
580 sg_data_sz = pkt_next->len - pkt_offset;
581 if (sg_data_sz > sdiodev->max_segment_size)
582 sg_data_sz = sdiodev->max_segment_size;
583 if (sg_data_sz > max_req_sz - req_sz)
584 sg_data_sz = max_req_sz - req_sz;
585
586 sg_set_buf(sgl, pkt_data, sg_data_sz);
587
588 sg_cnt++;
589 sgl = sg_next(sgl);
590 req_sz += sg_data_sz;
591 pkt_offset += sg_data_sz;
592 if (pkt_offset == pkt_next->len) {
593 pkt_offset = 0;
594 pkt_next = pkt_next->next;
595 }
596
597 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
598 break;
599 }
600 seg_sz -= sg_cnt;
601
602 if (req_sz % func_blk_sz != 0) {
603 brcmf_err("sg request length %u is not %u aligned\n",
604 req_sz, func_blk_sz);
605 ret = -ENOTBLK;
606 goto exit;
607 }
608
609 mmc_dat.sg_len = sg_cnt;
610 mmc_dat.blocks = req_sz / func_blk_sz;
611 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
612 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
613 /* incrementing addr for function 1 */
614 if (fn == 1)
615 addr += req_sz;
616
617 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
618 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
619
620 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
621 if (ret == -ENOMEDIUM) {
622 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
623 break;
624 } else if (ret != 0) {
625 brcmf_err("CMD53 sg block %s failed %d\n",
626 write ? "write" : "read", ret);
627 ret = -EIO;
628 break;
629 }
630 }
631
632 if (!write && sdiodev->settings->bus.sdio.broken_sg_support) {
633 local_pkt_next = local_list.next;
634 orig_offset = 0;
635 skb_queue_walk(pktlist, pkt_next) {
636 dst_offset = 0;
637 do {
638 req_sz = local_pkt_next->len - orig_offset;
639 req_sz = min_t(uint, pkt_next->len - dst_offset,
640 req_sz);
641 orig_data = local_pkt_next->data + orig_offset;
642 dst_data = pkt_next->data + dst_offset;
643 memcpy(dst_data, orig_data, req_sz);
644 orig_offset += req_sz;
645 dst_offset += req_sz;
646 if (orig_offset == local_pkt_next->len) {
647 orig_offset = 0;
648 local_pkt_next = local_pkt_next->next;
649 }
650 if (dst_offset == pkt_next->len)
651 break;
652 } while (!skb_queue_empty(&local_list));
653 }
654 }
655
656exit:
657 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
658 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
659 brcmu_pkt_buf_free_skb(pkt_next);
660
661 return ret;
662}
663
664int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
665{
666 struct sk_buff *mypkt;
667 int err;
668
669 mypkt = brcmu_pkt_buf_get_skb(nbytes);
670 if (!mypkt) {
671 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
672 nbytes);
673 return -EIO;
674 }
675
676 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
677 if (!err)
678 memcpy(buf, mypkt->data, nbytes);
679
680 brcmu_pkt_buf_free_skb(mypkt);
681 return err;
682}
683
684int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
685{
686 u32 addr = sdiodev->sbwad;
687 int err = 0;
688
689 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
690
691 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
692 if (err)
693 goto done;
694
695 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
696
697done:
698 return err;
699}
700
701int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
702 struct sk_buff_head *pktq, uint totlen)
703{
704 struct sk_buff *glom_skb;
705 struct sk_buff *skb;
706 u32 addr = sdiodev->sbwad;
707 int err = 0;
708
709 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
710 addr, pktq->qlen);
711
712 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
713 if (err)
714 goto done;
715
716 if (pktq->qlen == 1)
717 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
718 pktq->next);
719 else if (!sdiodev->sg_support) {
720 glom_skb = brcmu_pkt_buf_get_skb(totlen);
721 if (!glom_skb)
722 return -ENOMEM;
723 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
724 glom_skb);
725 if (err)
726 goto done;
727
728 skb_queue_walk(pktq, skb) {
729 memcpy(skb->data, glom_skb->data, skb->len);
730 skb_pull(glom_skb, skb->len);
731 }
732 } else
733 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
734 pktq);
735
736done:
737 return err;
738}
739
740int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
741{
742 struct sk_buff *mypkt;
743 u32 addr = sdiodev->sbwad;
744 int err;
745
746 mypkt = brcmu_pkt_buf_get_skb(nbytes);
747 if (!mypkt) {
748 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
749 nbytes);
750 return -EIO;
751 }
752
753 memcpy(mypkt->data, buf, nbytes);
754
755 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
756
757 if (!err)
758 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
759 mypkt);
760
761 brcmu_pkt_buf_free_skb(mypkt);
762 return err;
763
764}
765
766int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
767 struct sk_buff_head *pktq)
768{
769 struct sk_buff *skb;
770 u32 addr = sdiodev->sbwad;
771 int err;
772
773 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
774
775 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
776 if (err)
777 return err;
778
779 if (pktq->qlen == 1 || !sdiodev->sg_support)
780 skb_queue_walk(pktq, skb) {
781 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
782 addr, skb);
783 if (err)
784 break;
785 }
786 else
787 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
788 pktq);
789
790 return err;
791}
792
793int
794brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
795 u8 *data, uint size)
796{
797 int bcmerror = 0;
798 struct sk_buff *pkt;
799 u32 sdaddr;
800 uint dsize;
801
802 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
803 pkt = dev_alloc_skb(dsize);
804 if (!pkt) {
805 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
806 return -EIO;
807 }
808 pkt->priority = 0;
809
810 /* Determine initial transfer parameters */
811 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
812 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
813 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
814 else
815 dsize = size;
816
817 sdio_claim_host(sdiodev->func[1]);
818
819 /* Do the transfer(s) */
820 while (size) {
821 /* Set the backplane window to include the start address */
822 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
823 if (bcmerror)
824 break;
825
826 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
827 write ? "write" : "read", dsize,
828 sdaddr, address & SBSDIO_SBWINDOW_MASK);
829
830 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
831 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
832
833 skb_put(pkt, dsize);
834 if (write)
835 memcpy(pkt->data, data, dsize);
836 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
837 sdaddr, pkt);
838 if (bcmerror) {
839 brcmf_err("membytes transfer failed\n");
840 break;
841 }
842 if (!write)
843 memcpy(data, pkt->data, dsize);
844 skb_trim(pkt, 0);
845
846 /* Adjust for next transfer (if any) */
847 size -= dsize;
848 if (size) {
849 data += dsize;
850 address += dsize;
851 sdaddr = 0;
852 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
853 }
854 }
855
856 dev_kfree_skb(pkt);
857
858 /* Return the window to backplane enumeration space for core access */
859 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
860 brcmf_err("FAILED to set window back to 0x%x\n",
861 sdiodev->sbwad);
862
863 sdio_release_host(sdiodev->func[1]);
864
865 return bcmerror;
866}
867
868int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
869{
870 char t_func = (char)fn;
871 brcmf_dbg(SDIO, "Enter\n");
872
873 /* issue abort cmd52 command through F0 */
874 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
875 sizeof(t_func), &t_func, true);
876
877 brcmf_dbg(SDIO, "Exit\n");
878 return 0;
879}
880
881void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
882{
883 struct sdio_func *func;
884 struct mmc_host *host;
885 uint max_blocks;
886 uint nents;
887 int err;
888
889 func = sdiodev->func[2];
890 host = func->card->host;
891 sdiodev->sg_support = host->max_segs > 1;
892 max_blocks = min_t(uint, host->max_blk_count, 511u);
893 sdiodev->max_request_size = min_t(uint, host->max_req_size,
894 max_blocks * func->cur_blksize);
895 sdiodev->max_segment_count = min_t(uint, host->max_segs,
896 SG_MAX_SINGLE_ALLOC);
897 sdiodev->max_segment_size = host->max_seg_size;
898
899 if (!sdiodev->sg_support)
900 return;
901
902 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE,
903 sdiodev->settings->bus.sdio.txglomsz);
904 nents += (nents >> 4) + 1;
905
906 WARN_ON(nents > sdiodev->max_segment_count);
907
908 brcmf_dbg(TRACE, "nents=%d\n", nents);
909 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
910 if (err < 0) {
911 brcmf_err("allocation failed: disable scatter-gather");
912 sdiodev->sg_support = false;
913 }
914
915 sdiodev->txglomsz = sdiodev->settings->bus.sdio.txglomsz;
916}
917
918#ifdef CONFIG_PM_SLEEP
919static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
920{
921 sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
922 if (!sdiodev->freezer)
923 return -ENOMEM;
924 atomic_set(&sdiodev->freezer->thread_count, 0);
925 atomic_set(&sdiodev->freezer->freezing, 0);
926 init_waitqueue_head(&sdiodev->freezer->thread_freeze);
927 init_completion(&sdiodev->freezer->resumed);
928 return 0;
929}
930
931static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
932{
933 if (sdiodev->freezer) {
934 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
935 kfree(sdiodev->freezer);
936 }
937}
938
939static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
940{
941 atomic_t *expect = &sdiodev->freezer->thread_count;
942 int res = 0;
943
944 sdiodev->freezer->frozen_count = 0;
945 reinit_completion(&sdiodev->freezer->resumed);
946 atomic_set(&sdiodev->freezer->freezing, 1);
947 brcmf_sdio_trigger_dpc(sdiodev->bus);
948 wait_event(sdiodev->freezer->thread_freeze,
949 atomic_read(expect) == sdiodev->freezer->frozen_count);
950 sdio_claim_host(sdiodev->func[1]);
951 res = brcmf_sdio_sleep(sdiodev->bus, true);
952 sdio_release_host(sdiodev->func[1]);
953 return res;
954}
955
956static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
957{
958 sdio_claim_host(sdiodev->func[1]);
959 brcmf_sdio_sleep(sdiodev->bus, false);
960 sdio_release_host(sdiodev->func[1]);
961 atomic_set(&sdiodev->freezer->freezing, 0);
962 complete_all(&sdiodev->freezer->resumed);
963}
964
965bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
966{
967 return atomic_read(&sdiodev->freezer->freezing);
968}
969
970void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
971{
972 if (!brcmf_sdiod_freezing(sdiodev))
973 return;
974 sdiodev->freezer->frozen_count++;
975 wake_up(&sdiodev->freezer->thread_freeze);
976 wait_for_completion(&sdiodev->freezer->resumed);
977}
978
979void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
980{
981 atomic_inc(&sdiodev->freezer->thread_count);
982}
983
984void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
985{
986 atomic_dec(&sdiodev->freezer->thread_count);
987}
988#else
989static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
990{
991 return 0;
992}
993
994static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
995{
996}
997#endif /* CONFIG_PM_SLEEP */
998
999static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
1000{
1001 sdiodev->state = BRCMF_SDIOD_DOWN;
1002 if (sdiodev->bus) {
1003 brcmf_sdio_remove(sdiodev->bus);
1004 sdiodev->bus = NULL;
1005 }
1006
1007 brcmf_sdiod_freezer_detach(sdiodev);
1008
1009 /* Disable Function 2 */
1010 sdio_claim_host(sdiodev->func[2]);
1011 sdio_disable_func(sdiodev->func[2]);
1012 sdio_release_host(sdiodev->func[2]);
1013
1014 /* Disable Function 1 */
1015 sdio_claim_host(sdiodev->func[1]);
1016 sdio_disable_func(sdiodev->func[1]);
1017 sdio_release_host(sdiodev->func[1]);
1018
1019 sg_free_table(&sdiodev->sgtable);
1020 sdiodev->sbwad = 0;
1021
1022 pm_runtime_allow(sdiodev->func[1]->card->host->parent);
1023 return 0;
1024}
1025
1026static void brcmf_sdiod_host_fixup(struct mmc_host *host)
1027{
1028 /* runtime-pm powers off the device */
1029 pm_runtime_forbid(host->parent);
1030 /* avoid removal detection upon resume */
1031 host->caps |= MMC_CAP_NONREMOVABLE;
1032}
1033
1034static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
1035{
1036 int ret = 0;
1037
1038 sdiodev->num_funcs = 2;
1039
1040 sdio_claim_host(sdiodev->func[1]);
1041
1042 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
1043 if (ret) {
1044 brcmf_err("Failed to set F1 blocksize\n");
1045 sdio_release_host(sdiodev->func[1]);
1046 goto out;
1047 }
1048 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
1049 if (ret) {
1050 brcmf_err("Failed to set F2 blocksize\n");
1051 sdio_release_host(sdiodev->func[1]);
1052 goto out;
1053 }
1054
1055 /* increase F2 timeout */
1056 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
1057
1058 /* Enable Function 1 */
1059 ret = sdio_enable_func(sdiodev->func[1]);
1060 sdio_release_host(sdiodev->func[1]);
1061 if (ret) {
1062 brcmf_err("Failed to enable F1: err=%d\n", ret);
1063 goto out;
1064 }
1065
1066 ret = brcmf_sdiod_freezer_attach(sdiodev);
1067 if (ret)
1068 goto out;
1069
1070 /* try to attach to the target device */
1071 sdiodev->bus = brcmf_sdio_probe(sdiodev);
1072 if (!sdiodev->bus) {
1073 ret = -ENODEV;
1074 goto out;
1075 }
1076 brcmf_sdiod_host_fixup(sdiodev->func[2]->card->host);
1077out:
1078 if (ret)
1079 brcmf_sdiod_remove(sdiodev);
1080
1081 return ret;
1082}
1083
1084#define BRCMF_SDIO_DEVICE(dev_id) \
1085 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1086
1087/* devices we support, null terminated */
1088static const struct sdio_device_id brcmf_sdmmc_ids[] = {
1089 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
1090 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
1091 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
1092 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
1093 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
1094 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
1095 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
1096 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
1097 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
1098 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1099 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1101 { /* end: all zeroes */ }
1102};
1103MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1104
1105
1106static void brcmf_sdiod_acpi_set_power_manageable(struct device *dev,
1107 int val)
1108{
1109#if IS_ENABLED(CONFIG_ACPI)
1110 struct acpi_device *adev;
1111
1112 adev = ACPI_COMPANION(dev);
1113 if (adev)
1114 adev->flags.power_manageable = 0;
1115#endif
1116}
1117
1118static int brcmf_ops_sdio_probe(struct sdio_func *func,
1119 const struct sdio_device_id *id)
1120{
1121 int err;
1122 struct brcmf_sdio_dev *sdiodev;
1123 struct brcmf_bus *bus_if;
1124 struct device *dev;
1125
1126 brcmf_dbg(SDIO, "Enter\n");
1127 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1128 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1129 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1130 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1131
1132 dev = &func->dev;
1133 /* prohibit ACPI power management for this device */
1134 brcmf_sdiod_acpi_set_power_manageable(dev, 0);
1135
1136 /* Consume func num 1 but dont do anything with it. */
1137 if (func->num == 1)
1138 return 0;
1139
1140 /* Ignore anything but func 2 */
1141 if (func->num != 2)
1142 return -ENODEV;
1143
1144 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1145 if (!bus_if)
1146 return -ENOMEM;
1147 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1148 if (!sdiodev) {
1149 kfree(bus_if);
1150 return -ENOMEM;
1151 }
1152
1153 /* store refs to functions used. mmc_card does
1154 * not hold the F0 function pointer.
1155 */
1156 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1157 sdiodev->func[0]->num = 0;
1158 sdiodev->func[1] = func->card->sdio_func[0];
1159 sdiodev->func[2] = func;
1160
1161 sdiodev->bus_if = bus_if;
1162 bus_if->bus_priv.sdio = sdiodev;
1163 bus_if->proto_type = BRCMF_PROTO_BCDC;
1164 dev_set_drvdata(&func->dev, bus_if);
1165 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1166 sdiodev->dev = &sdiodev->func[1]->dev;
1167
1168 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1169
1170 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1171 err = brcmf_sdiod_probe(sdiodev);
1172 if (err) {
1173 brcmf_err("F2 error, probe failed %d...\n", err);
1174 goto fail;
1175 }
1176
1177 brcmf_dbg(SDIO, "F2 init completed...\n");
1178 return 0;
1179
1180fail:
1181 dev_set_drvdata(&func->dev, NULL);
1182 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1183 kfree(sdiodev->func[0]);
1184 kfree(sdiodev);
1185 kfree(bus_if);
1186 return err;
1187}
1188
1189static void brcmf_ops_sdio_remove(struct sdio_func *func)
1190{
1191 struct brcmf_bus *bus_if;
1192 struct brcmf_sdio_dev *sdiodev;
1193
1194 brcmf_dbg(SDIO, "Enter\n");
1195 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1196 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1197 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1198
1199 if (func->num != 1)
1200 return;
1201
1202 bus_if = dev_get_drvdata(&func->dev);
1203 if (bus_if) {
1204 sdiodev = bus_if->bus_priv.sdio;
1205 brcmf_sdiod_remove(sdiodev);
1206
1207 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1208 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1209
1210 kfree(bus_if);
1211 kfree(sdiodev->func[0]);
1212 kfree(sdiodev);
1213 }
1214
1215 brcmf_dbg(SDIO, "Exit\n");
1216}
1217
1218void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1219{
1220 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1221 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1222
1223 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1224 sdiodev->wowl_enabled = enabled;
1225}
1226
1227#ifdef CONFIG_PM_SLEEP
1228static int brcmf_ops_sdio_suspend(struct device *dev)
1229{
1230 struct sdio_func *func;
1231 struct brcmf_bus *bus_if;
1232 struct brcmf_sdio_dev *sdiodev;
1233 mmc_pm_flag_t sdio_flags;
1234
1235 func = container_of(dev, struct sdio_func, dev);
1236 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1237 if (func->num != SDIO_FUNC_1)
1238 return 0;
1239
1240
1241 bus_if = dev_get_drvdata(dev);
1242 sdiodev = bus_if->bus_priv.sdio;
1243
1244 brcmf_sdiod_freezer_on(sdiodev);
1245 brcmf_sdio_wd_timer(sdiodev->bus, 0);
1246
1247 sdio_flags = MMC_PM_KEEP_POWER;
1248 if (sdiodev->wowl_enabled) {
1249 if (sdiodev->settings->bus.sdio.oob_irq_supported)
1250 enable_irq_wake(sdiodev->settings->bus.sdio.oob_irq_nr);
1251 else
1252 sdio_flags |= MMC_PM_WAKE_SDIO_IRQ;
1253 }
1254 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1255 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1256 return 0;
1257}
1258
1259static int brcmf_ops_sdio_resume(struct device *dev)
1260{
1261 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1262 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1263 struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1264
1265 brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1266 if (func->num != SDIO_FUNC_2)
1267 return 0;
1268
1269 brcmf_sdiod_freezer_off(sdiodev);
1270 return 0;
1271}
1272
1273static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1274 .suspend = brcmf_ops_sdio_suspend,
1275 .resume = brcmf_ops_sdio_resume,
1276};
1277#endif /* CONFIG_PM_SLEEP */
1278
1279static struct sdio_driver brcmf_sdmmc_driver = {
1280 .probe = brcmf_ops_sdio_probe,
1281 .remove = brcmf_ops_sdio_remove,
1282 .name = KBUILD_MODNAME,
1283 .id_table = brcmf_sdmmc_ids,
1284 .drv = {
1285 .owner = THIS_MODULE,
1286#ifdef CONFIG_PM_SLEEP
1287 .pm = &brcmf_sdio_pm_ops,
1288#endif /* CONFIG_PM_SLEEP */
1289 },
1290};
1291
1292void brcmf_sdio_register(void)
1293{
1294 int ret;
1295
1296 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1297 if (ret)
1298 brcmf_err("sdio_register_driver failed: %d\n", ret);
1299}
1300
1301void brcmf_sdio_exit(void)
1302{
1303 brcmf_dbg(SDIO, "Enter\n");
1304
1305 sdio_unregister_driver(&brcmf_sdmmc_driver);
1306}
1307
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