2 * Copyright (c) 2010 Broadcom Corporation
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.
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.
16 /* ****************** SDIO CARD Interface Functions **************************/
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/platform_device.h>
31 #include <linux/platform_data/brcmfmac-sdio.h>
32 #include <linux/pm_runtime.h>
33 #include <linux/suspend.h>
34 #include <linux/errno.h>
35 #include <linux/module.h>
36 #include <linux/acpi.h>
37 #include <net/cfg80211.h>
40 #include <brcm_hw_ids.h>
41 #include <brcmu_utils.h>
42 #include <brcmu_wifi.h>
43 #include <chipcommon.h>
53 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
55 #define DMA_ALIGN_MASK 0x03
57 #define SDIO_FUNC1_BLOCKSIZE 64
58 #define SDIO_FUNC2_BLOCKSIZE 512
59 /* Maximum milliseconds to wait for F2 to come up */
60 #define SDIO_WAIT_F2RDY 3000
62 #define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
64 struct brcmf_sdiod_freezer
{
66 atomic_t thread_count
;
68 wait_queue_head_t thread_freeze
;
69 struct completion resumed
;
72 static irqreturn_t
brcmf_sdiod_oob_irqhandler(int irq
, void *dev_id
)
74 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev_id
);
75 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
77 brcmf_dbg(INTR
, "OOB intr triggered\n");
79 /* out-of-band interrupt is level-triggered which won't
80 * be cleared until dpc
82 if (sdiodev
->irq_en
) {
83 disable_irq_nosync(irq
);
84 sdiodev
->irq_en
= false;
87 brcmf_sdio_isr(sdiodev
->bus
);
92 static void brcmf_sdiod_ib_irqhandler(struct sdio_func
*func
)
94 struct brcmf_bus
*bus_if
= dev_get_drvdata(&func
->dev
);
95 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
97 brcmf_dbg(INTR
, "IB intr triggered\n");
99 brcmf_sdio_isr(sdiodev
->bus
);
102 /* dummy handler for SDIO function 2 interrupt */
103 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func
*func
)
107 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev
*sdiodev
)
111 u32 addr
, gpiocontrol
;
114 if ((sdiodev
->pdata
) && (sdiodev
->pdata
->oob_irq_supported
)) {
115 brcmf_dbg(SDIO
, "Enter, register OOB IRQ %d\n",
116 sdiodev
->pdata
->oob_irq_nr
);
117 ret
= request_irq(sdiodev
->pdata
->oob_irq_nr
,
118 brcmf_sdiod_oob_irqhandler
,
119 sdiodev
->pdata
->oob_irq_flags
,
121 &sdiodev
->func
[1]->dev
);
123 brcmf_err("request_irq failed %d\n", ret
);
126 sdiodev
->oob_irq_requested
= true;
127 spin_lock_init(&sdiodev
->irq_en_lock
);
128 spin_lock_irqsave(&sdiodev
->irq_en_lock
, flags
);
129 sdiodev
->irq_en
= true;
130 spin_unlock_irqrestore(&sdiodev
->irq_en_lock
, flags
);
132 ret
= enable_irq_wake(sdiodev
->pdata
->oob_irq_nr
);
134 brcmf_err("enable_irq_wake failed %d\n", ret
);
137 sdiodev
->irq_wake
= true;
139 sdio_claim_host(sdiodev
->func
[1]);
141 if (sdiodev
->bus_if
->chip
== BRCM_CC_43362_CHIP_ID
) {
142 /* assign GPIO to SDIO core */
143 addr
= CORE_CC_REG(SI_ENUM_BASE
, gpiocontrol
);
144 gpiocontrol
= brcmf_sdiod_regrl(sdiodev
, addr
, &ret
);
146 brcmf_sdiod_regwl(sdiodev
, addr
, gpiocontrol
, &ret
);
148 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_SELECT
, 0xf,
150 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_OUT
, 0, &ret
);
151 brcmf_sdiod_regwb(sdiodev
, SBSDIO_GPIO_EN
, 0x2, &ret
);
154 /* must configure SDIO_CCCR_IENx to enable irq */
155 data
= brcmf_sdiod_regrb(sdiodev
, SDIO_CCCR_IENx
, &ret
);
156 data
|= 1 << SDIO_FUNC_1
| 1 << SDIO_FUNC_2
| 1;
157 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_IENx
, data
, &ret
);
159 /* redirect, configure and enable io for interrupt signal */
160 data
= SDIO_SEPINT_MASK
| SDIO_SEPINT_OE
;
161 if (sdiodev
->pdata
->oob_irq_flags
& IRQF_TRIGGER_HIGH
)
162 data
|= SDIO_SEPINT_ACT_HI
;
163 brcmf_sdiod_regwb(sdiodev
, SDIO_CCCR_BRCM_SEPINT
, data
, &ret
);
165 sdio_release_host(sdiodev
->func
[1]);
167 brcmf_dbg(SDIO
, "Entering\n");
168 sdio_claim_host(sdiodev
->func
[1]);
169 sdio_claim_irq(sdiodev
->func
[1], brcmf_sdiod_ib_irqhandler
);
170 sdio_claim_irq(sdiodev
->func
[2], brcmf_sdiod_dummy_irqhandler
);
171 sdio_release_host(sdiodev
->func
[1]);
177 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev
*sdiodev
)
179 brcmf_dbg(SDIO
, "Entering\n");
181 if ((sdiodev
->pdata
) && (sdiodev
->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]);
187 if (sdiodev
->oob_irq_requested
) {
188 sdiodev
->oob_irq_requested
= false;
189 if (sdiodev
->irq_wake
) {
190 disable_irq_wake(sdiodev
->pdata
->oob_irq_nr
);
191 sdiodev
->irq_wake
= false;
193 free_irq(sdiodev
->pdata
->oob_irq_nr
,
194 &sdiodev
->func
[1]->dev
);
195 sdiodev
->irq_en
= false;
198 sdio_claim_host(sdiodev
->func
[1]);
199 sdio_release_irq(sdiodev
->func
[2]);
200 sdio_release_irq(sdiodev
->func
[1]);
201 sdio_release_host(sdiodev
->func
[1]);
207 void brcmf_sdiod_change_state(struct brcmf_sdio_dev
*sdiodev
,
208 enum brcmf_sdiod_state state
)
210 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
||
211 state
== sdiodev
->state
)
214 brcmf_dbg(TRACE
, "%d -> %d\n", sdiodev
->state
, state
);
215 switch (sdiodev
->state
) {
216 case BRCMF_SDIOD_DATA
:
217 /* any other state means bus interface is down */
218 brcmf_bus_change_state(sdiodev
->bus_if
, BRCMF_BUS_DOWN
);
220 case BRCMF_SDIOD_DOWN
:
221 /* transition from DOWN to DATA means bus interface is up */
222 if (state
== BRCMF_SDIOD_DATA
)
223 brcmf_bus_change_state(sdiodev
->bus_if
, BRCMF_BUS_UP
);
228 sdiodev
->state
= state
;
231 static inline int brcmf_sdiod_f0_writeb(struct sdio_func
*func
,
232 uint regaddr
, u8 byte
)
237 * Can only directly write to some F0 registers.
238 * Handle CCCR_IENx and CCCR_ABORT command
241 if ((regaddr
== SDIO_CCCR_ABORT
) ||
242 (regaddr
== SDIO_CCCR_IENx
))
243 sdio_writeb(func
, byte
, regaddr
, &err_ret
);
245 sdio_f0_writeb(func
, byte
, regaddr
, &err_ret
);
250 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev
*sdiodev
, u8 fn
,
251 u32 addr
, u8 regsz
, void *data
, bool write
)
253 struct sdio_func
*func
;
256 brcmf_dbg(SDIO
, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
257 write
, fn
, addr
, regsz
);
259 /* only allow byte access on F0 */
260 if (WARN_ON(regsz
> 1 && !fn
))
262 func
= sdiodev
->func
[fn
];
268 sdio_writeb(func
, *(u8
*)data
, addr
, &ret
);
270 ret
= brcmf_sdiod_f0_writeb(func
, addr
,
274 *(u8
*)data
= sdio_readb(func
, addr
, &ret
);
276 *(u8
*)data
= sdio_f0_readb(func
, addr
, &ret
);
281 sdio_writew(func
, *(u16
*)data
, addr
, &ret
);
283 *(u16
*)data
= sdio_readw(func
, addr
, &ret
);
287 sdio_writel(func
, *(u32
*)data
, addr
, &ret
);
289 *(u32
*)data
= sdio_readl(func
, addr
, &ret
);
292 brcmf_err("invalid size: %d\n", regsz
);
297 brcmf_dbg(SDIO
, "failed to %s data F%d@0x%05x, err: %d\n",
298 write
? "write" : "read", fn
, addr
, ret
);
303 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
304 u8 regsz
, void *data
, bool write
)
310 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
)
314 * figure out how to read the register based on address range
315 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
316 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
317 * The rest: function 1 silicon backplane core registers
319 if ((addr
& ~REG_F0_REG_MASK
) == 0)
326 memset(data
, 0, regsz
);
327 /* for retry wait for 1 ms till bus get settled down */
329 usleep_range(1000, 2000);
330 ret
= brcmf_sdiod_request_data(sdiodev
, func
, addr
, regsz
,
332 } while (ret
!= 0 && ret
!= -ENOMEDIUM
&&
333 retry
++ < SDIOH_API_ACCESS_RETRY_LIMIT
);
335 if (ret
== -ENOMEDIUM
)
336 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
339 * SleepCSR register access can fail when
340 * waking up the device so reduce this noise
343 if (addr
!= SBSDIO_FUNC1_SLEEPCSR
)
344 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
345 write
? "write" : "read", func
, addr
, ret
);
347 brcmf_dbg(SDIO
, "failed to %s data F%d@0x%05x, err: %d\n",
348 write
? "write" : "read", func
, addr
, ret
);
354 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev
*sdiodev
, u32 address
)
359 if (sdiodev
->state
== BRCMF_SDIOD_NOMEDIUM
)
362 addr
[0] = (address
>> 8) & SBSDIO_SBADDRLOW_MASK
;
363 addr
[1] = (address
>> 16) & SBSDIO_SBADDRMID_MASK
;
364 addr
[2] = (address
>> 24) & SBSDIO_SBADDRHIGH_MASK
;
366 for (i
= 0; i
< 3; i
++) {
367 err
= brcmf_sdiod_regrw_helper(sdiodev
,
368 SBSDIO_FUNC1_SBADDRLOW
+ i
,
369 sizeof(u8
), &addr
[i
], true);
371 brcmf_err("failed at addr: 0x%0x\n",
372 SBSDIO_FUNC1_SBADDRLOW
+ i
);
381 brcmf_sdiod_addrprep(struct brcmf_sdio_dev
*sdiodev
, uint width
, u32
*addr
)
383 uint bar0
= *addr
& ~SBSDIO_SB_OFT_ADDR_MASK
;
386 if (bar0
!= sdiodev
->sbwad
) {
387 err
= brcmf_sdiod_set_sbaddr_window(sdiodev
, bar0
);
391 sdiodev
->sbwad
= bar0
;
394 *addr
&= SBSDIO_SB_OFT_ADDR_MASK
;
397 *addr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
402 u8
brcmf_sdiod_regrb(struct brcmf_sdio_dev
*sdiodev
, u32 addr
, int *ret
)
407 brcmf_dbg(SDIO
, "addr:0x%08x\n", addr
);
408 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
410 brcmf_dbg(SDIO
, "data:0x%02x\n", data
);
418 u32
brcmf_sdiod_regrl(struct brcmf_sdio_dev
*sdiodev
, u32 addr
, int *ret
)
423 brcmf_dbg(SDIO
, "addr:0x%08x\n", addr
);
424 retval
= brcmf_sdiod_addrprep(sdiodev
, sizeof(data
), &addr
);
427 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
429 brcmf_dbg(SDIO
, "data:0x%08x\n", data
);
438 void brcmf_sdiod_regwb(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
443 brcmf_dbg(SDIO
, "addr:0x%08x, data:0x%02x\n", addr
, data
);
444 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
450 void brcmf_sdiod_regwl(struct brcmf_sdio_dev
*sdiodev
, u32 addr
,
455 brcmf_dbg(SDIO
, "addr:0x%08x, data:0x%08x\n", addr
, data
);
456 retval
= brcmf_sdiod_addrprep(sdiodev
, sizeof(data
), &addr
);
459 retval
= brcmf_sdiod_regrw_helper(sdiodev
, addr
, sizeof(data
), &data
,
467 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev
*sdiodev
, uint fn
,
468 bool write
, u32 addr
, struct sk_buff
*pkt
)
473 /* Single skb use the standard mmc interface */
474 req_sz
= pkt
->len
+ 3;
478 err
= sdio_memcpy_toio(sdiodev
->func
[fn
], addr
,
479 ((u8
*)(pkt
->data
)), req_sz
);
481 err
= sdio_memcpy_fromio(sdiodev
->func
[fn
], ((u8
*)(pkt
->data
)),
484 /* function 2 read is FIFO operation */
485 err
= sdio_readsb(sdiodev
->func
[fn
], ((u8
*)(pkt
->data
)), addr
,
487 if (err
== -ENOMEDIUM
)
488 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
493 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
494 * @sdiodev: brcmfmac sdio device
495 * @fn: SDIO function number
496 * @write: direction flag
497 * @addr: dongle memory address as source/destination
500 * This function takes the respbonsibility as the interface function to MMC
501 * stack for block data access. It assumes that the skb passed down by the
502 * caller has already been padded and aligned.
504 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev
*sdiodev
, uint fn
,
505 bool write
, u32 addr
,
506 struct sk_buff_head
*pktlist
)
508 unsigned int req_sz
, func_blk_sz
, sg_cnt
, sg_data_sz
, pkt_offset
;
509 unsigned int max_req_sz
, orig_offset
, dst_offset
;
510 unsigned short max_seg_cnt
, seg_sz
;
511 unsigned char *pkt_data
, *orig_data
, *dst_data
;
512 struct sk_buff
*pkt_next
= NULL
, *local_pkt_next
;
513 struct sk_buff_head local_list
, *target_list
;
514 struct mmc_request mmc_req
;
515 struct mmc_command mmc_cmd
;
516 struct mmc_data mmc_dat
;
517 struct scatterlist
*sgl
;
523 target_list
= pktlist
;
524 /* for host with broken sg support, prepare a page aligned list */
525 __skb_queue_head_init(&local_list
);
526 if (sdiodev
->pdata
&& sdiodev
->pdata
->broken_sg_support
&& !write
) {
528 skb_queue_walk(pktlist
, pkt_next
)
529 req_sz
+= pkt_next
->len
;
530 req_sz
= ALIGN(req_sz
, sdiodev
->func
[fn
]->cur_blksize
);
531 while (req_sz
> PAGE_SIZE
) {
532 pkt_next
= brcmu_pkt_buf_get_skb(PAGE_SIZE
);
533 if (pkt_next
== NULL
) {
537 __skb_queue_tail(&local_list
, pkt_next
);
540 pkt_next
= brcmu_pkt_buf_get_skb(req_sz
);
541 if (pkt_next
== NULL
) {
545 __skb_queue_tail(&local_list
, pkt_next
);
546 target_list
= &local_list
;
549 func_blk_sz
= sdiodev
->func
[fn
]->cur_blksize
;
550 max_req_sz
= sdiodev
->max_request_size
;
551 max_seg_cnt
= min_t(unsigned short, sdiodev
->max_segment_count
,
553 seg_sz
= target_list
->qlen
;
555 pkt_next
= target_list
->next
;
557 memset(&mmc_req
, 0, sizeof(struct mmc_request
));
558 memset(&mmc_cmd
, 0, sizeof(struct mmc_command
));
559 memset(&mmc_dat
, 0, sizeof(struct mmc_data
));
561 mmc_dat
.sg
= sdiodev
->sgtable
.sgl
;
562 mmc_dat
.blksz
= func_blk_sz
;
563 mmc_dat
.flags
= write
? MMC_DATA_WRITE
: MMC_DATA_READ
;
564 mmc_cmd
.opcode
= SD_IO_RW_EXTENDED
;
565 mmc_cmd
.arg
= write
? 1<<31 : 0; /* write flag */
566 mmc_cmd
.arg
|= (fn
& 0x7) << 28; /* SDIO func num */
567 mmc_cmd
.arg
|= 1<<27; /* block mode */
568 /* for function 1 the addr will be incremented */
569 mmc_cmd
.arg
|= (fn
== 1) ? 1<<26 : 0;
570 mmc_cmd
.flags
= MMC_RSP_SPI_R5
| MMC_RSP_R5
| MMC_CMD_ADTC
;
571 mmc_req
.cmd
= &mmc_cmd
;
572 mmc_req
.data
= &mmc_dat
;
577 sgl
= sdiodev
->sgtable
.sgl
;
579 while (pkt_next
!= (struct sk_buff
*)target_list
) {
580 pkt_data
= pkt_next
->data
+ pkt_offset
;
581 sg_data_sz
= pkt_next
->len
- pkt_offset
;
582 if (sg_data_sz
> sdiodev
->max_segment_size
)
583 sg_data_sz
= sdiodev
->max_segment_size
;
584 if (sg_data_sz
> max_req_sz
- req_sz
)
585 sg_data_sz
= max_req_sz
- req_sz
;
587 sg_set_buf(sgl
, pkt_data
, sg_data_sz
);
591 req_sz
+= sg_data_sz
;
592 pkt_offset
+= sg_data_sz
;
593 if (pkt_offset
== pkt_next
->len
) {
595 pkt_next
= pkt_next
->next
;
598 if (req_sz
>= max_req_sz
|| sg_cnt
>= max_seg_cnt
)
603 if (req_sz
% func_blk_sz
!= 0) {
604 brcmf_err("sg request length %u is not %u aligned\n",
605 req_sz
, func_blk_sz
);
610 mmc_dat
.sg_len
= sg_cnt
;
611 mmc_dat
.blocks
= req_sz
/ func_blk_sz
;
612 mmc_cmd
.arg
|= (addr
& 0x1FFFF) << 9; /* address */
613 mmc_cmd
.arg
|= mmc_dat
.blocks
& 0x1FF; /* block count */
614 /* incrementing addr for function 1 */
618 mmc_set_data_timeout(&mmc_dat
, sdiodev
->func
[fn
]->card
);
619 mmc_wait_for_req(sdiodev
->func
[fn
]->card
->host
, &mmc_req
);
621 ret
= mmc_cmd
.error
? mmc_cmd
.error
: mmc_dat
.error
;
622 if (ret
== -ENOMEDIUM
) {
623 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_NOMEDIUM
);
625 } else if (ret
!= 0) {
626 brcmf_err("CMD53 sg block %s failed %d\n",
627 write
? "write" : "read", ret
);
633 if (sdiodev
->pdata
&& sdiodev
->pdata
->broken_sg_support
&& !write
) {
634 local_pkt_next
= local_list
.next
;
636 skb_queue_walk(pktlist
, pkt_next
) {
639 req_sz
= local_pkt_next
->len
- orig_offset
;
640 req_sz
= min_t(uint
, pkt_next
->len
- dst_offset
,
642 orig_data
= local_pkt_next
->data
+ orig_offset
;
643 dst_data
= pkt_next
->data
+ dst_offset
;
644 memcpy(dst_data
, orig_data
, req_sz
);
645 orig_offset
+= req_sz
;
646 dst_offset
+= req_sz
;
647 if (orig_offset
== local_pkt_next
->len
) {
649 local_pkt_next
= local_pkt_next
->next
;
651 if (dst_offset
== pkt_next
->len
)
653 } while (!skb_queue_empty(&local_list
));
658 sg_init_table(sdiodev
->sgtable
.sgl
, sdiodev
->sgtable
.orig_nents
);
659 while ((pkt_next
= __skb_dequeue(&local_list
)) != NULL
)
660 brcmu_pkt_buf_free_skb(pkt_next
);
665 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
667 struct sk_buff
*mypkt
;
670 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
672 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
677 err
= brcmf_sdiod_recv_pkt(sdiodev
, mypkt
);
679 memcpy(buf
, mypkt
->data
, nbytes
);
681 brcmu_pkt_buf_free_skb(mypkt
);
685 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev
*sdiodev
, struct sk_buff
*pkt
)
687 u32 addr
= sdiodev
->sbwad
;
690 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pkt
->len
);
692 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
696 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
, pkt
);
702 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev
*sdiodev
,
703 struct sk_buff_head
*pktq
, uint totlen
)
705 struct sk_buff
*glom_skb
;
707 u32 addr
= sdiodev
->sbwad
;
710 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n",
713 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
718 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
,
720 else if (!sdiodev
->sg_support
) {
721 glom_skb
= brcmu_pkt_buf_get_skb(totlen
);
724 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, false, addr
,
729 skb_queue_walk(pktq
, skb
) {
730 memcpy(skb
->data
, glom_skb
->data
, skb
->len
);
731 skb_pull(glom_skb
, skb
->len
);
734 err
= brcmf_sdiod_sglist_rw(sdiodev
, SDIO_FUNC_2
, false, addr
,
741 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev
*sdiodev
, u8
*buf
, uint nbytes
)
743 struct sk_buff
*mypkt
;
744 u32 addr
= sdiodev
->sbwad
;
747 mypkt
= brcmu_pkt_buf_get_skb(nbytes
);
749 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
754 memcpy(mypkt
->data
, buf
, nbytes
);
756 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
759 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, true, addr
,
762 brcmu_pkt_buf_free_skb(mypkt
);
767 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev
*sdiodev
,
768 struct sk_buff_head
*pktq
)
771 u32 addr
= sdiodev
->sbwad
;
774 brcmf_dbg(SDIO
, "addr = 0x%x, size = %d\n", addr
, pktq
->qlen
);
776 err
= brcmf_sdiod_addrprep(sdiodev
, 4, &addr
);
780 if (pktq
->qlen
== 1 || !sdiodev
->sg_support
)
781 skb_queue_walk(pktq
, skb
) {
782 err
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_2
, true,
788 err
= brcmf_sdiod_sglist_rw(sdiodev
, SDIO_FUNC_2
, true, addr
,
795 brcmf_sdiod_ramrw(struct brcmf_sdio_dev
*sdiodev
, bool write
, u32 address
,
803 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
804 pkt
= dev_alloc_skb(dsize
);
806 brcmf_err("dev_alloc_skb failed: len %d\n", dsize
);
811 /* Determine initial transfer parameters */
812 sdaddr
= address
& SBSDIO_SB_OFT_ADDR_MASK
;
813 if ((sdaddr
+ size
) & SBSDIO_SBWINDOW_MASK
)
814 dsize
= (SBSDIO_SB_OFT_ADDR_LIMIT
- sdaddr
);
818 sdio_claim_host(sdiodev
->func
[1]);
820 /* Do the transfer(s) */
822 /* Set the backplane window to include the start address */
823 bcmerror
= brcmf_sdiod_set_sbaddr_window(sdiodev
, address
);
827 brcmf_dbg(SDIO
, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
828 write
? "write" : "read", dsize
,
829 sdaddr
, address
& SBSDIO_SBWINDOW_MASK
);
831 sdaddr
&= SBSDIO_SB_OFT_ADDR_MASK
;
832 sdaddr
|= SBSDIO_SB_ACCESS_2_4B_FLAG
;
836 memcpy(pkt
->data
, data
, dsize
);
837 bcmerror
= brcmf_sdiod_buffrw(sdiodev
, SDIO_FUNC_1
, write
,
840 brcmf_err("membytes transfer failed\n");
844 memcpy(data
, pkt
->data
, dsize
);
847 /* Adjust for next transfer (if any) */
853 dsize
= min_t(uint
, SBSDIO_SB_OFT_ADDR_LIMIT
, size
);
859 /* Return the window to backplane enumeration space for core access */
860 if (brcmf_sdiod_set_sbaddr_window(sdiodev
, sdiodev
->sbwad
))
861 brcmf_err("FAILED to set window back to 0x%x\n",
864 sdio_release_host(sdiodev
->func
[1]);
869 int brcmf_sdiod_abort(struct brcmf_sdio_dev
*sdiodev
, uint fn
)
871 char t_func
= (char)fn
;
872 brcmf_dbg(SDIO
, "Enter\n");
874 /* issue abort cmd52 command through F0 */
875 brcmf_sdiod_request_data(sdiodev
, SDIO_FUNC_0
, SDIO_CCCR_ABORT
,
876 sizeof(t_func
), &t_func
, true);
878 brcmf_dbg(SDIO
, "Exit\n");
882 static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev
*sdiodev
)
887 if (!sdiodev
->sg_support
)
890 nents
= max_t(uint
, BRCMF_DEFAULT_RXGLOM_SIZE
,
891 sdiodev
->bus_if
->drvr
->settings
->sdiod_txglomsz
);
892 nents
+= (nents
>> 4) + 1;
894 WARN_ON(nents
> sdiodev
->max_segment_count
);
896 brcmf_dbg(TRACE
, "nents=%d\n", nents
);
897 err
= sg_alloc_table(&sdiodev
->sgtable
, nents
, GFP_KERNEL
);
899 brcmf_err("allocation failed: disable scatter-gather");
900 sdiodev
->sg_support
= false;
903 sdiodev
->txglomsz
= sdiodev
->bus_if
->drvr
->settings
->sdiod_txglomsz
;
906 #ifdef CONFIG_PM_SLEEP
907 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
909 sdiodev
->freezer
= kzalloc(sizeof(*sdiodev
->freezer
), GFP_KERNEL
);
910 if (!sdiodev
->freezer
)
912 atomic_set(&sdiodev
->freezer
->thread_count
, 0);
913 atomic_set(&sdiodev
->freezer
->freezing
, 0);
914 init_waitqueue_head(&sdiodev
->freezer
->thread_freeze
);
915 init_completion(&sdiodev
->freezer
->resumed
);
919 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
921 if (sdiodev
->freezer
) {
922 WARN_ON(atomic_read(&sdiodev
->freezer
->freezing
));
923 kfree(sdiodev
->freezer
);
927 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev
*sdiodev
)
929 atomic_t
*expect
= &sdiodev
->freezer
->thread_count
;
932 sdiodev
->freezer
->frozen_count
= 0;
933 reinit_completion(&sdiodev
->freezer
->resumed
);
934 atomic_set(&sdiodev
->freezer
->freezing
, 1);
935 brcmf_sdio_trigger_dpc(sdiodev
->bus
);
936 wait_event(sdiodev
->freezer
->thread_freeze
,
937 atomic_read(expect
) == sdiodev
->freezer
->frozen_count
);
938 sdio_claim_host(sdiodev
->func
[1]);
939 res
= brcmf_sdio_sleep(sdiodev
->bus
, true);
940 sdio_release_host(sdiodev
->func
[1]);
944 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev
*sdiodev
)
946 sdio_claim_host(sdiodev
->func
[1]);
947 brcmf_sdio_sleep(sdiodev
->bus
, false);
948 sdio_release_host(sdiodev
->func
[1]);
949 atomic_set(&sdiodev
->freezer
->freezing
, 0);
950 complete_all(&sdiodev
->freezer
->resumed
);
953 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev
*sdiodev
)
955 return atomic_read(&sdiodev
->freezer
->freezing
);
958 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev
*sdiodev
)
960 if (!brcmf_sdiod_freezing(sdiodev
))
962 sdiodev
->freezer
->frozen_count
++;
963 wake_up(&sdiodev
->freezer
->thread_freeze
);
964 wait_for_completion(&sdiodev
->freezer
->resumed
);
967 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev
*sdiodev
)
969 atomic_inc(&sdiodev
->freezer
->thread_count
);
972 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev
*sdiodev
)
974 atomic_dec(&sdiodev
->freezer
->thread_count
);
977 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev
*sdiodev
)
982 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev
*sdiodev
)
985 #endif /* CONFIG_PM_SLEEP */
987 static int brcmf_sdiod_remove(struct brcmf_sdio_dev
*sdiodev
)
989 sdiodev
->state
= BRCMF_SDIOD_DOWN
;
991 brcmf_sdio_remove(sdiodev
->bus
);
995 brcmf_sdiod_freezer_detach(sdiodev
);
997 /* Disable Function 2 */
998 sdio_claim_host(sdiodev
->func
[2]);
999 sdio_disable_func(sdiodev
->func
[2]);
1000 sdio_release_host(sdiodev
->func
[2]);
1002 /* Disable Function 1 */
1003 sdio_claim_host(sdiodev
->func
[1]);
1004 sdio_disable_func(sdiodev
->func
[1]);
1005 sdio_release_host(sdiodev
->func
[1]);
1007 sg_free_table(&sdiodev
->sgtable
);
1010 pm_runtime_allow(sdiodev
->func
[1]->card
->host
->parent
);
1014 static void brcmf_sdiod_host_fixup(struct mmc_host
*host
)
1016 /* runtime-pm powers off the device */
1017 pm_runtime_forbid(host
->parent
);
1018 /* avoid removal detection upon resume */
1019 host
->caps
|= MMC_CAP_NONREMOVABLE
;
1022 static int brcmf_sdiod_probe(struct brcmf_sdio_dev
*sdiodev
)
1024 struct sdio_func
*func
;
1025 struct mmc_host
*host
;
1029 sdiodev
->num_funcs
= 2;
1031 sdio_claim_host(sdiodev
->func
[1]);
1033 ret
= sdio_set_block_size(sdiodev
->func
[1], SDIO_FUNC1_BLOCKSIZE
);
1035 brcmf_err("Failed to set F1 blocksize\n");
1036 sdio_release_host(sdiodev
->func
[1]);
1039 ret
= sdio_set_block_size(sdiodev
->func
[2], SDIO_FUNC2_BLOCKSIZE
);
1041 brcmf_err("Failed to set F2 blocksize\n");
1042 sdio_release_host(sdiodev
->func
[1]);
1046 /* increase F2 timeout */
1047 sdiodev
->func
[2]->enable_timeout
= SDIO_WAIT_F2RDY
;
1049 /* Enable Function 1 */
1050 ret
= sdio_enable_func(sdiodev
->func
[1]);
1051 sdio_release_host(sdiodev
->func
[1]);
1053 brcmf_err("Failed to enable F1: err=%d\n", ret
);
1058 * determine host related variables after brcmf_sdiod_probe()
1059 * as func->cur_blksize is properly set and F2 init has been
1060 * completed successfully.
1062 func
= sdiodev
->func
[2];
1063 host
= func
->card
->host
;
1064 sdiodev
->sg_support
= host
->max_segs
> 1;
1065 max_blocks
= min_t(uint
, host
->max_blk_count
, 511u);
1066 sdiodev
->max_request_size
= min_t(uint
, host
->max_req_size
,
1067 max_blocks
* func
->cur_blksize
);
1068 sdiodev
->max_segment_count
= min_t(uint
, host
->max_segs
,
1069 SG_MAX_SINGLE_ALLOC
);
1070 sdiodev
->max_segment_size
= host
->max_seg_size
;
1072 /* allocate scatter-gather table. sg support
1073 * will be disabled upon allocation failure.
1075 brcmf_sdiod_sgtable_alloc(sdiodev
);
1077 ret
= brcmf_sdiod_freezer_attach(sdiodev
);
1081 /* try to attach to the target device */
1082 sdiodev
->bus
= brcmf_sdio_probe(sdiodev
);
1083 if (!sdiodev
->bus
) {
1087 brcmf_sdiod_host_fixup(host
);
1090 brcmf_sdiod_remove(sdiodev
);
1095 #define BRCMF_SDIO_DEVICE(dev_id) \
1096 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1098 /* devices we support, null terminated */
1099 static const struct sdio_device_id brcmf_sdmmc_ids
[] = {
1100 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143
),
1101 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241
),
1102 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329
),
1103 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330
),
1104 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334
),
1105 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340
),
1106 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341
),
1107 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362
),
1108 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339
),
1109 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430
),
1110 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345
),
1111 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354
),
1112 { /* end: all zeroes */ }
1114 MODULE_DEVICE_TABLE(sdio
, brcmf_sdmmc_ids
);
1116 static struct brcmfmac_sdio_platform_data
*brcmfmac_sdio_pdata
;
1119 static void brcmf_sdiod_acpi_set_power_manageable(struct device
*dev
,
1122 #if IS_ENABLED(CONFIG_ACPI)
1123 struct acpi_device
*adev
;
1125 adev
= ACPI_COMPANION(dev
);
1127 adev
->flags
.power_manageable
= 0;
1131 static int brcmf_ops_sdio_probe(struct sdio_func
*func
,
1132 const struct sdio_device_id
*id
)
1135 struct brcmf_sdio_dev
*sdiodev
;
1136 struct brcmf_bus
*bus_if
;
1139 brcmf_dbg(SDIO
, "Enter\n");
1140 brcmf_dbg(SDIO
, "Class=%x\n", func
->class);
1141 brcmf_dbg(SDIO
, "sdio vendor ID: 0x%04x\n", func
->vendor
);
1142 brcmf_dbg(SDIO
, "sdio device ID: 0x%04x\n", func
->device
);
1143 brcmf_dbg(SDIO
, "Function#: %d\n", func
->num
);
1146 /* prohibit ACPI power management for this device */
1147 brcmf_sdiod_acpi_set_power_manageable(dev
, 0);
1149 /* Consume func num 1 but dont do anything with it. */
1153 /* Ignore anything but func 2 */
1157 bus_if
= kzalloc(sizeof(struct brcmf_bus
), GFP_KERNEL
);
1160 sdiodev
= kzalloc(sizeof(struct brcmf_sdio_dev
), GFP_KERNEL
);
1166 /* store refs to functions used. mmc_card does
1167 * not hold the F0 function pointer.
1169 sdiodev
->func
[0] = kmemdup(func
, sizeof(*func
), GFP_KERNEL
);
1170 sdiodev
->func
[0]->num
= 0;
1171 sdiodev
->func
[1] = func
->card
->sdio_func
[0];
1172 sdiodev
->func
[2] = func
;
1174 sdiodev
->bus_if
= bus_if
;
1175 bus_if
->bus_priv
.sdio
= sdiodev
;
1176 bus_if
->proto_type
= BRCMF_PROTO_BCDC
;
1177 dev_set_drvdata(&func
->dev
, bus_if
);
1178 dev_set_drvdata(&sdiodev
->func
[1]->dev
, bus_if
);
1179 sdiodev
->dev
= &sdiodev
->func
[1]->dev
;
1180 sdiodev
->pdata
= brcmfmac_sdio_pdata
;
1182 if (!sdiodev
->pdata
)
1183 brcmf_of_probe(sdiodev
);
1185 #ifdef CONFIG_PM_SLEEP
1186 /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ
1187 * is true or when platform data OOB irq is true).
1189 if ((sdio_get_host_pm_caps(sdiodev
->func
[1]) & MMC_PM_KEEP_POWER
) &&
1190 ((sdio_get_host_pm_caps(sdiodev
->func
[1]) & MMC_PM_WAKE_SDIO_IRQ
) ||
1191 (sdiodev
->pdata
&& sdiodev
->pdata
->oob_irq_supported
)))
1192 bus_if
->wowl_supported
= true;
1195 brcmf_sdiod_change_state(sdiodev
, BRCMF_SDIOD_DOWN
);
1197 brcmf_dbg(SDIO
, "F2 found, calling brcmf_sdiod_probe...\n");
1198 err
= brcmf_sdiod_probe(sdiodev
);
1200 brcmf_err("F2 error, probe failed %d...\n", err
);
1204 brcmf_dbg(SDIO
, "F2 init completed...\n");
1208 dev_set_drvdata(&func
->dev
, NULL
);
1209 dev_set_drvdata(&sdiodev
->func
[1]->dev
, NULL
);
1210 kfree(sdiodev
->func
[0]);
1216 static void brcmf_ops_sdio_remove(struct sdio_func
*func
)
1218 struct brcmf_bus
*bus_if
;
1219 struct brcmf_sdio_dev
*sdiodev
;
1221 brcmf_dbg(SDIO
, "Enter\n");
1222 brcmf_dbg(SDIO
, "sdio vendor ID: 0x%04x\n", func
->vendor
);
1223 brcmf_dbg(SDIO
, "sdio device ID: 0x%04x\n", func
->device
);
1224 brcmf_dbg(SDIO
, "Function: %d\n", func
->num
);
1229 bus_if
= dev_get_drvdata(&func
->dev
);
1231 sdiodev
= bus_if
->bus_priv
.sdio
;
1232 brcmf_sdiod_remove(sdiodev
);
1234 dev_set_drvdata(&sdiodev
->func
[1]->dev
, NULL
);
1235 dev_set_drvdata(&sdiodev
->func
[2]->dev
, NULL
);
1238 kfree(sdiodev
->func
[0]);
1242 brcmf_dbg(SDIO
, "Exit\n");
1245 void brcmf_sdio_wowl_config(struct device
*dev
, bool enabled
)
1247 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1248 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1250 brcmf_dbg(SDIO
, "Configuring WOWL, enabled=%d\n", enabled
);
1251 sdiodev
->wowl_enabled
= enabled
;
1254 #ifdef CONFIG_PM_SLEEP
1255 static int brcmf_ops_sdio_suspend(struct device
*dev
)
1257 struct sdio_func
*func
;
1258 struct brcmf_bus
*bus_if
;
1259 struct brcmf_sdio_dev
*sdiodev
;
1260 mmc_pm_flag_t sdio_flags
;
1262 func
= container_of(dev
, struct sdio_func
, dev
);
1263 brcmf_dbg(SDIO
, "Enter: F%d\n", func
->num
);
1264 if (func
->num
!= SDIO_FUNC_1
)
1268 bus_if
= dev_get_drvdata(dev
);
1269 sdiodev
= bus_if
->bus_priv
.sdio
;
1271 brcmf_sdiod_freezer_on(sdiodev
);
1272 brcmf_sdio_wd_timer(sdiodev
->bus
, 0);
1274 sdio_flags
= MMC_PM_KEEP_POWER
;
1275 if (sdiodev
->wowl_enabled
) {
1276 if (sdiodev
->pdata
->oob_irq_supported
)
1277 enable_irq_wake(sdiodev
->pdata
->oob_irq_nr
);
1279 sdio_flags
|= MMC_PM_WAKE_SDIO_IRQ
;
1281 if (sdio_set_host_pm_flags(sdiodev
->func
[1], sdio_flags
))
1282 brcmf_err("Failed to set pm_flags %x\n", sdio_flags
);
1286 static int brcmf_ops_sdio_resume(struct device
*dev
)
1288 struct brcmf_bus
*bus_if
= dev_get_drvdata(dev
);
1289 struct brcmf_sdio_dev
*sdiodev
= bus_if
->bus_priv
.sdio
;
1290 struct sdio_func
*func
= container_of(dev
, struct sdio_func
, dev
);
1292 brcmf_dbg(SDIO
, "Enter: F%d\n", func
->num
);
1293 if (func
->num
!= SDIO_FUNC_2
)
1296 brcmf_sdiod_freezer_off(sdiodev
);
1300 static const struct dev_pm_ops brcmf_sdio_pm_ops
= {
1301 .suspend
= brcmf_ops_sdio_suspend
,
1302 .resume
= brcmf_ops_sdio_resume
,
1304 #endif /* CONFIG_PM_SLEEP */
1306 static struct sdio_driver brcmf_sdmmc_driver
= {
1307 .probe
= brcmf_ops_sdio_probe
,
1308 .remove
= brcmf_ops_sdio_remove
,
1309 .name
= BRCMFMAC_SDIO_PDATA_NAME
,
1310 .id_table
= brcmf_sdmmc_ids
,
1312 .owner
= THIS_MODULE
,
1313 #ifdef CONFIG_PM_SLEEP
1314 .pm
= &brcmf_sdio_pm_ops
,
1315 #endif /* CONFIG_PM_SLEEP */
1319 static int __init
brcmf_sdio_pd_probe(struct platform_device
*pdev
)
1321 brcmf_dbg(SDIO
, "Enter\n");
1323 brcmfmac_sdio_pdata
= dev_get_platdata(&pdev
->dev
);
1325 if (brcmfmac_sdio_pdata
->power_on
)
1326 brcmfmac_sdio_pdata
->power_on();
1331 static int brcmf_sdio_pd_remove(struct platform_device
*pdev
)
1333 brcmf_dbg(SDIO
, "Enter\n");
1335 if (brcmfmac_sdio_pdata
->power_off
)
1336 brcmfmac_sdio_pdata
->power_off();
1338 sdio_unregister_driver(&brcmf_sdmmc_driver
);
1343 static struct platform_driver brcmf_sdio_pd
= {
1344 .remove
= brcmf_sdio_pd_remove
,
1346 .name
= BRCMFMAC_SDIO_PDATA_NAME
,
1350 void brcmf_sdio_register(void)
1354 ret
= sdio_register_driver(&brcmf_sdmmc_driver
);
1356 brcmf_err("sdio_register_driver failed: %d\n", ret
);
1359 void brcmf_sdio_exit(void)
1361 brcmf_dbg(SDIO
, "Enter\n");
1363 if (brcmfmac_sdio_pdata
)
1364 platform_driver_unregister(&brcmf_sdio_pd
);
1366 sdio_unregister_driver(&brcmf_sdmmc_driver
);
1369 void __init
brcmf_sdio_init(void)
1373 brcmf_dbg(SDIO
, "Enter\n");
1375 ret
= platform_driver_probe(&brcmf_sdio_pd
, brcmf_sdio_pd_probe
);
1377 brcmf_dbg(SDIO
, "No platform data available.\n");