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1/*
2 * Copyright (c) 2014 Redpine Signals Inc.
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
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 *
16 */
17
18#include <linux/module.h>
19#include "rsi_sdio.h"
20#include "rsi_common.h"
21#include "rsi_coex.h"
22#include "rsi_hal.h"
23
24/* Default operating mode is wlan STA + BT */
25static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL;
26module_param(dev_oper_mode, ushort, 0444);
27MODULE_PARM_DESC(dev_oper_mode,
28 "1[Wi-Fi], 4[BT], 8[BT LE], 5[Wi-Fi STA + BT classic]\n"
29 "9[Wi-Fi STA + BT LE], 13[Wi-Fi STA + BT classic + BT LE]\n"
30 "6[AP + BT classic], 14[AP + BT classic + BT LE]");
31
32/**
33 * rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg.
34 * @rw: Read/write
35 * @func: function number
36 * @raw: indicates whether to perform read after write
37 * @address: address to which to read/write
38 * @writedata: data to write
39 *
40 * Return: argument
41 */
42static u32 rsi_sdio_set_cmd52_arg(bool rw,
43 u8 func,
44 u8 raw,
45 u32 address,
46 u8 writedata)
47{
48 return ((rw & 1) << 31) | ((func & 0x7) << 28) |
49 ((raw & 1) << 27) | (1 << 26) |
50 ((address & 0x1FFFF) << 9) | (1 << 8) |
51 (writedata & 0xFF);
52}
53
54/**
55 * rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card.
56 * @card: Pointer to the mmc_card.
57 * @address: Address to write.
58 * @byte: Data to write.
59 *
60 * Return: Write status.
61 */
62static int rsi_cmd52writebyte(struct mmc_card *card,
63 u32 address,
64 u8 byte)
65{
66 struct mmc_command io_cmd;
67 u32 arg;
68
69 memset(&io_cmd, 0, sizeof(io_cmd));
70 arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte);
71 io_cmd.opcode = SD_IO_RW_DIRECT;
72 io_cmd.arg = arg;
73 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
74
75 return mmc_wait_for_cmd(card->host, &io_cmd, 0);
76}
77
78/**
79 * rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card.
80 * @card: Pointer to the mmc_card.
81 * @address: Address to read from.
82 * @byte: Variable to store read value.
83 *
84 * Return: Read status.
85 */
86static int rsi_cmd52readbyte(struct mmc_card *card,
87 u32 address,
88 u8 *byte)
89{
90 struct mmc_command io_cmd;
91 u32 arg;
92 int err;
93
94 memset(&io_cmd, 0, sizeof(io_cmd));
95 arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0);
96 io_cmd.opcode = SD_IO_RW_DIRECT;
97 io_cmd.arg = arg;
98 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC;
99
100 err = mmc_wait_for_cmd(card->host, &io_cmd, 0);
101 if ((!err) && (byte))
102 *byte = io_cmd.resp[0] & 0xFF;
103 return err;
104}
105
106/**
107 * rsi_issue_sdiocommand() - This function issues sdio commands.
108 * @func: Pointer to the sdio_func structure.
109 * @opcode: Opcode value.
110 * @arg: Arguments to pass.
111 * @flags: Flags which are set.
112 * @resp: Pointer to store response.
113 *
114 * Return: err: command status as 0 or -1.
115 */
116static int rsi_issue_sdiocommand(struct sdio_func *func,
117 u32 opcode,
118 u32 arg,
119 u32 flags,
120 u32 *resp)
121{
122 struct mmc_command cmd;
123 struct mmc_host *host;
124 int err;
125
126 host = func->card->host;
127
128 memset(&cmd, 0, sizeof(struct mmc_command));
129 cmd.opcode = opcode;
130 cmd.arg = arg;
131 cmd.flags = flags;
132 err = mmc_wait_for_cmd(host, &cmd, 3);
133
134 if ((!err) && (resp))
135 *resp = cmd.resp[0];
136
137 return err;
138}
139
140/**
141 * rsi_handle_interrupt() - This function is called upon the occurrence
142 * of an interrupt.
143 * @function: Pointer to the sdio_func structure.
144 *
145 * Return: None.
146 */
147static void rsi_handle_interrupt(struct sdio_func *function)
148{
149 struct rsi_hw *adapter = sdio_get_drvdata(function);
150 struct rsi_91x_sdiodev *dev =
151 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
152
153 if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED)
154 return;
155
156 rsi_set_event(&dev->rx_thread.event);
157}
158
159/**
160 * rsi_reset_card() - This function resets and re-initializes the card.
161 * @pfunction: Pointer to the sdio_func structure.
162 *
163 * Return: None.
164 */
165static void rsi_reset_card(struct sdio_func *pfunction)
166{
167 int ret = 0;
168 int err;
169 struct mmc_card *card = pfunction->card;
170 struct mmc_host *host = card->host;
171 u8 cmd52_resp;
172 u32 clock, resp, i;
173 u16 rca;
174
175 /* Reset 9110 chip */
176 ret = rsi_cmd52writebyte(pfunction->card,
177 SDIO_CCCR_ABORT,
178 (1 << 3));
179
180 /* Card will not send any response as it is getting reset immediately
181 * Hence expect a timeout status from host controller
182 */
183 if (ret != -ETIMEDOUT)
184 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret);
185
186 /* Wait for few milli seconds to get rid of residue charges if any */
187 msleep(20);
188
189 /* Initialize the SDIO card */
190 host->ios.chip_select = MMC_CS_DONTCARE;
191 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
192 host->ios.power_mode = MMC_POWER_UP;
193 host->ios.bus_width = MMC_BUS_WIDTH_1;
194 host->ios.timing = MMC_TIMING_LEGACY;
195 host->ops->set_ios(host, &host->ios);
196
197 /*
198 * This delay should be sufficient to allow the power supply
199 * to reach the minimum voltage.
200 */
201 msleep(20);
202
203 host->ios.clock = host->f_min;
204 host->ios.power_mode = MMC_POWER_ON;
205 host->ops->set_ios(host, &host->ios);
206
207 /*
208 * This delay must be at least 74 clock sizes, or 1 ms, or the
209 * time required to reach a stable voltage.
210 */
211 msleep(20);
212
213 /* Issue CMD0. Goto idle state */
214 host->ios.chip_select = MMC_CS_HIGH;
215 host->ops->set_ios(host, &host->ios);
216 msleep(20);
217 err = rsi_issue_sdiocommand(pfunction,
218 MMC_GO_IDLE_STATE,
219 0,
220 (MMC_RSP_NONE | MMC_CMD_BC),
221 NULL);
222 host->ios.chip_select = MMC_CS_DONTCARE;
223 host->ops->set_ios(host, &host->ios);
224 msleep(20);
225 host->use_spi_crc = 0;
226
227 if (err)
228 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err);
229
230 /* Issue CMD5, arg = 0 */
231 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0,
232 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
233 if (err)
234 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
235 __func__, err);
236 card->ocr = resp;
237 /* Issue CMD5, arg = ocr. Wait till card is ready */
238 for (i = 0; i < 100; i++) {
239 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND,
240 card->ocr,
241 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
242 if (err) {
243 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
244 __func__, err);
245 break;
246 }
247
248 if (resp & MMC_CARD_BUSY)
249 break;
250 msleep(20);
251 }
252
253 if ((i == 100) || (err)) {
254 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n",
255 __func__, i, err);
256 return;
257 }
258
259 /* Issue CMD3, get RCA */
260 err = rsi_issue_sdiocommand(pfunction,
261 SD_SEND_RELATIVE_ADDR,
262 0,
263 (MMC_RSP_R6 | MMC_CMD_BCR),
264 &resp);
265 if (err) {
266 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err);
267 return;
268 }
269 rca = resp >> 16;
270 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
271 host->ops->set_ios(host, &host->ios);
272
273 /* Issue CMD7, select card */
274 err = rsi_issue_sdiocommand(pfunction,
275 MMC_SELECT_CARD,
276 (rca << 16),
277 (MMC_RSP_R1 | MMC_CMD_AC),
278 NULL);
279 if (err) {
280 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err);
281 return;
282 }
283
284 /* Enable high speed */
285 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) {
286 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__);
287 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp);
288 if (err) {
289 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n",
290 __func__, err);
291 } else {
292 err = rsi_cmd52writebyte(card,
293 SDIO_CCCR_SPEED,
294 (cmd52_resp | SDIO_SPEED_EHS));
295 if (err) {
296 rsi_dbg(ERR_ZONE,
297 "%s: CCR speed regwrite failed %d\n",
298 __func__, err);
299 return;
300 }
301 host->ios.timing = MMC_TIMING_SD_HS;
302 host->ops->set_ios(host, &host->ios);
303 }
304 }
305
306 /* Set clock */
307 if (mmc_card_hs(card))
308 clock = 50000000;
309 else
310 clock = card->cis.max_dtr;
311
312 if (clock > host->f_max)
313 clock = host->f_max;
314
315 host->ios.clock = clock;
316 host->ops->set_ios(host, &host->ios);
317
318 if (card->host->caps & MMC_CAP_4_BIT_DATA) {
319 /* CMD52: Set bus width & disable card detect resistor */
320 err = rsi_cmd52writebyte(card,
321 SDIO_CCCR_IF,
322 (SDIO_BUS_CD_DISABLE |
323 SDIO_BUS_WIDTH_4BIT));
324 if (err) {
325 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n",
326 __func__, err);
327 return;
328 }
329 host->ios.bus_width = MMC_BUS_WIDTH_4;
330 host->ops->set_ios(host, &host->ios);
331 }
332}
333
334/**
335 * rsi_setclock() - This function sets the clock frequency.
336 * @adapter: Pointer to the adapter structure.
337 * @freq: Clock frequency.
338 *
339 * Return: None.
340 */
341static void rsi_setclock(struct rsi_hw *adapter, u32 freq)
342{
343 struct rsi_91x_sdiodev *dev =
344 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
345 struct mmc_host *host = dev->pfunction->card->host;
346 u32 clock;
347
348 clock = freq * 1000;
349 if (clock > host->f_max)
350 clock = host->f_max;
351 host->ios.clock = clock;
352 host->ops->set_ios(host, &host->ios);
353}
354
355/**
356 * rsi_setblocklength() - This function sets the host block length.
357 * @adapter: Pointer to the adapter structure.
358 * @length: Block length to be set.
359 *
360 * Return: status: 0 on success, -1 on failure.
361 */
362static int rsi_setblocklength(struct rsi_hw *adapter, u32 length)
363{
364 struct rsi_91x_sdiodev *dev =
365 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
366 int status;
367 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__);
368
369 status = sdio_set_block_size(dev->pfunction, length);
370 dev->pfunction->max_blksize = 256;
371 adapter->block_size = dev->pfunction->max_blksize;
372
373 rsi_dbg(INFO_ZONE,
374 "%s: Operational blk length is %d\n", __func__, length);
375 return status;
376}
377
378/**
379 * rsi_setupcard() - This function queries and sets the card's features.
380 * @adapter: Pointer to the adapter structure.
381 *
382 * Return: status: 0 on success, -1 on failure.
383 */
384static int rsi_setupcard(struct rsi_hw *adapter)
385{
386 struct rsi_91x_sdiodev *dev =
387 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
388 int status = 0;
389
390 rsi_setclock(adapter, 50000);
391
392 dev->tx_blk_size = 256;
393 status = rsi_setblocklength(adapter, dev->tx_blk_size);
394 if (status)
395 rsi_dbg(ERR_ZONE,
396 "%s: Unable to set block length\n", __func__);
397 return status;
398}
399
400/**
401 * rsi_sdio_read_register() - This function reads one byte of information
402 * from a register.
403 * @adapter: Pointer to the adapter structure.
404 * @addr: Address of the register.
405 * @data: Pointer to the data that stores the data read.
406 *
407 * Return: 0 on success, -1 on failure.
408 */
409int rsi_sdio_read_register(struct rsi_hw *adapter,
410 u32 addr,
411 u8 *data)
412{
413 struct rsi_91x_sdiodev *dev =
414 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
415 u8 fun_num = 0;
416 int status;
417
418 if (likely(dev->sdio_irq_task != current))
419 sdio_claim_host(dev->pfunction);
420
421 if (fun_num == 0)
422 *data = sdio_f0_readb(dev->pfunction, addr, &status);
423 else
424 *data = sdio_readb(dev->pfunction, addr, &status);
425
426 if (likely(dev->sdio_irq_task != current))
427 sdio_release_host(dev->pfunction);
428
429 return status;
430}
431
432/**
433 * rsi_sdio_write_register() - This function writes one byte of information
434 * into a register.
435 * @adapter: Pointer to the adapter structure.
436 * @function: Function Number.
437 * @addr: Address of the register.
438 * @data: Pointer to the data tha has to be written.
439 *
440 * Return: 0 on success, -1 on failure.
441 */
442int rsi_sdio_write_register(struct rsi_hw *adapter,
443 u8 function,
444 u32 addr,
445 u8 *data)
446{
447 struct rsi_91x_sdiodev *dev =
448 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
449 int status = 0;
450
451 if (likely(dev->sdio_irq_task != current))
452 sdio_claim_host(dev->pfunction);
453
454 if (function == 0)
455 sdio_f0_writeb(dev->pfunction, *data, addr, &status);
456 else
457 sdio_writeb(dev->pfunction, *data, addr, &status);
458
459 if (likely(dev->sdio_irq_task != current))
460 sdio_release_host(dev->pfunction);
461
462 return status;
463}
464
465/**
466 * rsi_sdio_ack_intr() - This function acks the interrupt received.
467 * @adapter: Pointer to the adapter structure.
468 * @int_bit: Interrupt bit to write into register.
469 *
470 * Return: None.
471 */
472void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit)
473{
474 int status;
475 status = rsi_sdio_write_register(adapter,
476 1,
477 (SDIO_FUN1_INTR_CLR_REG |
478 RSI_SD_REQUEST_MASTER),
479 &int_bit);
480 if (status)
481 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__);
482}
483
484
485
486/**
487 * rsi_sdio_read_register_multiple() - This function read multiple bytes of
488 * information from the SD card.
489 * @adapter: Pointer to the adapter structure.
490 * @addr: Address of the register.
491 * @count: Number of multiple bytes to be read.
492 * @data: Pointer to the read data.
493 *
494 * Return: 0 on success, -1 on failure.
495 */
496static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter,
497 u32 addr,
498 u8 *data,
499 u16 count)
500{
501 struct rsi_91x_sdiodev *dev =
502 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
503 u32 status;
504
505 if (likely(dev->sdio_irq_task != current))
506 sdio_claim_host(dev->pfunction);
507
508 status = sdio_readsb(dev->pfunction, data, addr, count);
509
510 if (likely(dev->sdio_irq_task != current))
511 sdio_release_host(dev->pfunction);
512
513 if (status != 0)
514 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__);
515 return status;
516}
517
518/**
519 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of
520 * information to the SD card.
521 * @adapter: Pointer to the adapter structure.
522 * @addr: Address of the register.
523 * @data: Pointer to the data that has to be written.
524 * @count: Number of multiple bytes to be written.
525 *
526 * Return: 0 on success, -1 on failure.
527 */
528int rsi_sdio_write_register_multiple(struct rsi_hw *adapter,
529 u32 addr,
530 u8 *data,
531 u16 count)
532{
533 struct rsi_91x_sdiodev *dev =
534 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
535 int status;
536
537 if (dev->write_fail > 1) {
538 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__);
539 return 0;
540 } else if (dev->write_fail == 1) {
541 /**
542 * Assuming it is a CRC failure, we want to allow another
543 * card write
544 */
545 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__);
546 dev->write_fail++;
547 }
548
549 if (likely(dev->sdio_irq_task != current))
550 sdio_claim_host(dev->pfunction);
551
552 status = sdio_writesb(dev->pfunction, addr, data, count);
553
554 if (likely(dev->sdio_irq_task != current))
555 sdio_release_host(dev->pfunction);
556
557 if (status) {
558 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n",
559 __func__, status);
560 dev->write_fail = 2;
561 } else {
562 memcpy(dev->prev_desc, data, FRAME_DESC_SZ);
563 }
564 return status;
565}
566
567static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter,
568 u32 base_address,
569 u32 instructions_sz,
570 u16 block_size,
571 u8 *ta_firmware)
572{
573 u32 num_blocks, offset, i;
574 u16 msb_address, lsb_address;
575 u8 *temp_buf;
576 int status;
577
578 num_blocks = instructions_sz / block_size;
579 msb_address = base_address >> 16;
580
581 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n",
582 instructions_sz, num_blocks);
583
584 temp_buf = kmalloc(block_size, GFP_KERNEL);
585 if (!temp_buf)
586 return -ENOMEM;
587
588 /* Loading DM ms word in the sdio slave */
589 status = rsi_sdio_master_access_msword(adapter, msb_address);
590 if (status < 0) {
591 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
592 goto out_free;
593 }
594
595 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) {
596 memcpy(temp_buf, ta_firmware + offset, block_size);
597 lsb_address = (u16)base_address;
598 status = rsi_sdio_write_register_multiple
599 (adapter,
600 lsb_address | RSI_SD_REQUEST_MASTER,
601 temp_buf, block_size);
602 if (status < 0) {
603 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__);
604 goto out_free;
605 }
606 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i);
607 base_address += block_size;
608
609 if ((base_address >> 16) != msb_address) {
610 msb_address += 1;
611
612 /* Loading DM ms word in the sdio slave */
613 status = rsi_sdio_master_access_msword(adapter,
614 msb_address);
615 if (status < 0) {
616 rsi_dbg(ERR_ZONE,
617 "%s: Unable to set ms word reg\n",
618 __func__);
619 goto out_free;
620 }
621 }
622 }
623
624 if (instructions_sz % block_size) {
625 memset(temp_buf, 0, block_size);
626 memcpy(temp_buf, ta_firmware + offset,
627 instructions_sz % block_size);
628 lsb_address = (u16)base_address;
629 status = rsi_sdio_write_register_multiple
630 (adapter,
631 lsb_address | RSI_SD_REQUEST_MASTER,
632 temp_buf,
633 instructions_sz % block_size);
634 if (status < 0)
635 goto out_free;
636 rsi_dbg(INFO_ZONE,
637 "Written Last Block in Address 0x%x Successfully\n",
638 offset | RSI_SD_REQUEST_MASTER);
639 }
640
641 status = 0;
642out_free:
643 kfree(temp_buf);
644 return status;
645}
646
647#define FLASH_SIZE_ADDR 0x04000016
648static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr,
649 u32 *read_buf, u16 size)
650{
651 u32 addr_on_bus, *data;
652 u16 ms_addr;
653 int status;
654
655 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
656 if (!data)
657 return -ENOMEM;
658
659 ms_addr = (addr >> 16);
660 status = rsi_sdio_master_access_msword(adapter, ms_addr);
661 if (status < 0) {
662 rsi_dbg(ERR_ZONE,
663 "%s: Unable to set ms word to common reg\n",
664 __func__);
665 goto err;
666 }
667 addr &= 0xFFFF;
668
669 addr_on_bus = (addr & 0xFF000000);
670 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) ||
671 (addr_on_bus == 0x0))
672 addr_on_bus = (addr & ~(0x3));
673 else
674 addr_on_bus = addr;
675
676 /* Bring TA out of reset */
677 status = rsi_sdio_read_register_multiple
678 (adapter,
679 (addr_on_bus | RSI_SD_REQUEST_MASTER),
680 (u8 *)data, 4);
681 if (status < 0) {
682 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__);
683 goto err;
684 }
685 if (size == 2) {
686 if ((addr & 0x3) == 0)
687 *read_buf = *data;
688 else
689 *read_buf = (*data >> 16);
690 *read_buf = (*read_buf & 0xFFFF);
691 } else if (size == 1) {
692 if ((addr & 0x3) == 0)
693 *read_buf = *data;
694 else if ((addr & 0x3) == 1)
695 *read_buf = (*data >> 8);
696 else if ((addr & 0x3) == 2)
697 *read_buf = (*data >> 16);
698 else
699 *read_buf = (*data >> 24);
700 *read_buf = (*read_buf & 0xFF);
701 } else {
702 *read_buf = *data;
703 }
704
705err:
706 kfree(data);
707 return status;
708}
709
710static int rsi_sdio_master_reg_write(struct rsi_hw *adapter,
711 unsigned long addr,
712 unsigned long data, u16 size)
713{
714 unsigned long *data_aligned;
715 int status;
716
717 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
718 if (!data_aligned)
719 return -ENOMEM;
720
721 if (size == 2) {
722 *data_aligned = ((data << 16) | (data & 0xFFFF));
723 } else if (size == 1) {
724 u32 temp_data = data & 0xFF;
725
726 *data_aligned = ((temp_data << 24) | (temp_data << 16) |
727 (temp_data << 8) | temp_data);
728 } else {
729 *data_aligned = data;
730 }
731 size = 4;
732
733 status = rsi_sdio_master_access_msword(adapter, (addr >> 16));
734 if (status < 0) {
735 rsi_dbg(ERR_ZONE,
736 "%s: Unable to set ms word to common reg\n",
737 __func__);
738 kfree(data_aligned);
739 return -EIO;
740 }
741 addr = addr & 0xFFFF;
742
743 /* Bring TA out of reset */
744 status = rsi_sdio_write_register_multiple
745 (adapter,
746 (addr | RSI_SD_REQUEST_MASTER),
747 (u8 *)data_aligned, size);
748 if (status < 0)
749 rsi_dbg(ERR_ZONE,
750 "%s: Unable to do AHB reg write\n", __func__);
751
752 kfree(data_aligned);
753 return status;
754}
755
756/**
757 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device.
758 * @adapter: Pointer to the adapter structure.
759 * @pkt: Pointer to the data to be written on to the device.
760 * @len: length of the data to be written on to the device.
761 *
762 * Return: 0 on success, -1 on failure.
763 */
764static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter,
765 u8 *pkt,
766 u32 len)
767{
768 struct rsi_91x_sdiodev *dev =
769 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
770 u32 block_size = dev->tx_blk_size;
771 u32 num_blocks, address, length;
772 u32 queueno;
773 int status;
774
775 queueno = ((pkt[1] >> 4) & 0xf);
776 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q)
777 queueno = RSI_BT_Q;
778
779 num_blocks = len / block_size;
780
781 if (len % block_size)
782 num_blocks++;
783
784 address = (num_blocks * block_size | (queueno << 12));
785 length = num_blocks * block_size;
786
787 status = rsi_sdio_write_register_multiple(adapter,
788 address,
789 (u8 *)pkt,
790 length);
791 if (status)
792 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n",
793 __func__, status);
794 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__);
795 return status;
796}
797
798/**
799 * rsi_sdio_host_intf_read_pkt() - This function reads the packet
800 * from the device.
801 * @adapter: Pointer to the adapter data structure.
802 * @pkt: Pointer to the packet data to be read from the the device.
803 * @length: Length of the data to be read from the device.
804 *
805 * Return: 0 on success, -1 on failure.
806 */
807int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter,
808 u8 *pkt,
809 u32 length)
810{
811 int status = -EINVAL;
812
813 if (!length) {
814 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__);
815 return status;
816 }
817
818 status = rsi_sdio_read_register_multiple(adapter,
819 length,
820 (u8 *)pkt,
821 length); /*num of bytes*/
822
823 if (status)
824 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__,
825 status);
826 return status;
827}
828
829/**
830 * rsi_init_sdio_interface() - This function does init specific to SDIO.
831 *
832 * @adapter: Pointer to the adapter data structure.
833 * @pfunction: Pointer to the sdio_func structure.
834 *
835 * Return: 0 on success, -1 on failure.
836 */
837static int rsi_init_sdio_interface(struct rsi_hw *adapter,
838 struct sdio_func *pfunction)
839{
840 struct rsi_91x_sdiodev *rsi_91x_dev;
841 int status;
842
843 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
844 if (!rsi_91x_dev)
845 return -ENOMEM;
846
847 adapter->rsi_dev = rsi_91x_dev;
848
849 sdio_claim_host(pfunction);
850
851 pfunction->enable_timeout = 100;
852 status = sdio_enable_func(pfunction);
853 if (status) {
854 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__);
855 sdio_release_host(pfunction);
856 return status;
857 }
858
859 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
860
861 rsi_91x_dev->pfunction = pfunction;
862 adapter->device = &pfunction->dev;
863
864 sdio_set_drvdata(pfunction, adapter);
865
866 status = rsi_setupcard(adapter);
867 if (status) {
868 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__);
869 goto fail;
870 }
871
872 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__);
873
874 status = rsi_init_sdio_slave_regs(adapter);
875 if (status) {
876 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__);
877 goto fail;
878 }
879 sdio_release_host(pfunction);
880
881 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout;
882 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status;
883
884#ifdef CONFIG_RSI_DEBUGFS
885 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
886#endif
887 return 0;
888fail:
889 sdio_disable_func(pfunction);
890 sdio_release_host(pfunction);
891 return status;
892}
893
894static int rsi_sdio_reinit_device(struct rsi_hw *adapter)
895{
896 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;
897 struct sdio_func *pfunction = sdev->pfunction;
898 int ii;
899
900 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
901 skb_queue_purge(&adapter->priv->tx_queue[ii]);
902
903 /* Initialize device again */
904 sdio_claim_host(pfunction);
905
906 sdio_release_irq(pfunction);
907 rsi_reset_card(pfunction);
908
909 sdio_enable_func(pfunction);
910 rsi_setupcard(adapter);
911 rsi_init_sdio_slave_regs(adapter);
912 sdio_claim_irq(pfunction, rsi_handle_interrupt);
913 rsi_hal_device_init(adapter);
914
915 sdio_release_host(pfunction);
916
917 return 0;
918}
919
920static int rsi_sdio_ta_reset(struct rsi_hw *adapter)
921{
922 int status;
923 u32 addr;
924 u8 *data;
925
926 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL);
927 if (!data)
928 return -ENOMEM;
929
930 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR);
931 if (status < 0) {
932 rsi_dbg(ERR_ZONE,
933 "Unable to set ms word to common reg\n");
934 goto err;
935 }
936
937 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__);
938 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
939 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER;
940 status = rsi_sdio_write_register_multiple(adapter, addr,
941 (u8 *)data,
942 RSI_9116_REG_SIZE);
943 if (status < 0) {
944 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n");
945 goto err;
946 }
947
948 put_unaligned_le32(TA_SOFT_RST_CLR, data);
949 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER;
950 status = rsi_sdio_write_register_multiple(adapter, addr,
951 (u8 *)data,
952 RSI_9116_REG_SIZE);
953 if (status < 0) {
954 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n");
955 goto err;
956 }
957
958 put_unaligned_le32(TA_PC_ZERO, data);
959 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER;
960 status = rsi_sdio_write_register_multiple(adapter, addr,
961 (u8 *)data,
962 RSI_9116_REG_SIZE);
963 if (status < 0) {
964 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n");
965 status = -EINVAL;
966 goto err;
967 }
968
969 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data);
970 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER;
971 status = rsi_sdio_write_register_multiple(adapter, addr,
972 (u8 *)data,
973 RSI_9116_REG_SIZE);
974 if (status < 0) {
975 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n");
976 goto err;
977 }
978
979 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR);
980 if (status < 0) {
981 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n");
982 goto err;
983 }
984 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n");
985
986err:
987 kfree(data);
988 return status;
989}
990
991static struct rsi_host_intf_ops sdio_host_intf_ops = {
992 .write_pkt = rsi_sdio_host_intf_write_pkt,
993 .read_pkt = rsi_sdio_host_intf_read_pkt,
994 .master_access_msword = rsi_sdio_master_access_msword,
995 .read_reg_multiple = rsi_sdio_read_register_multiple,
996 .write_reg_multiple = rsi_sdio_write_register_multiple,
997 .master_reg_read = rsi_sdio_master_reg_read,
998 .master_reg_write = rsi_sdio_master_reg_write,
999 .load_data_master_write = rsi_sdio_load_data_master_write,
1000 .reinit_device = rsi_sdio_reinit_device,
1001 .ta_reset = rsi_sdio_ta_reset,
1002};
1003
1004/**
1005 * rsi_probe() - This function is called by kernel when the driver provided
1006 * Vendor and device IDs are matched. All the initialization
1007 * work is done here.
1008 * @pfunction: Pointer to the sdio_func structure.
1009 * @id: Pointer to sdio_device_id structure.
1010 *
1011 * Return: 0 on success, 1 on failure.
1012 */
1013static int rsi_probe(struct sdio_func *pfunction,
1014 const struct sdio_device_id *id)
1015{
1016 struct rsi_hw *adapter;
1017 struct rsi_91x_sdiodev *sdev;
1018 int status = -EINVAL;
1019
1020 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
1021
1022 adapter = rsi_91x_init(dev_oper_mode);
1023 if (!adapter) {
1024 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
1025 __func__);
1026 return -EINVAL;
1027 }
1028 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO;
1029 adapter->host_intf_ops = &sdio_host_intf_ops;
1030
1031 if (rsi_init_sdio_interface(adapter, pfunction)) {
1032 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n",
1033 __func__);
1034 status = -EIO;
1035 goto fail_free_adapter;
1036 }
1037
1038 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) {
1039 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__);
1040 adapter->device_model = RSI_DEV_9113;
1041 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) {
1042 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__);
1043 adapter->device_model = RSI_DEV_9116;
1044 } else {
1045 rsi_dbg(ERR_ZONE,
1046 "%s: Unsupported RSI device id 0x%x\n", __func__,
1047 pfunction->device);
1048 goto fail_free_adapter;
1049 }
1050
1051 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1052 rsi_init_event(&sdev->rx_thread.event);
1053 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread,
1054 rsi_sdio_rx_thread, "SDIO-RX-Thread");
1055 if (status) {
1056 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
1057 goto fail_kill_thread;
1058 }
1059
1060 sdio_claim_host(pfunction);
1061 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
1062 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__);
1063 sdio_release_host(pfunction);
1064 status = -EIO;
1065 goto fail_claim_irq;
1066 }
1067 sdio_release_host(pfunction);
1068 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__);
1069
1070 if (rsi_hal_device_init(adapter)) {
1071 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__);
1072 status = -EINVAL;
1073 goto fail_dev_init;
1074 }
1075 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n");
1076
1077 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) {
1078 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
1079 status = -EIO;
1080 goto fail_dev_init;
1081 }
1082
1083 adapter->priv->hibernate_resume = false;
1084 adapter->priv->reinit_hw = false;
1085 return 0;
1086
1087fail_dev_init:
1088 sdio_claim_host(pfunction);
1089 sdio_release_irq(pfunction);
1090 sdio_release_host(pfunction);
1091fail_claim_irq:
1092 rsi_kill_thread(&sdev->rx_thread);
1093fail_kill_thread:
1094 sdio_claim_host(pfunction);
1095 sdio_disable_func(pfunction);
1096 sdio_release_host(pfunction);
1097fail_free_adapter:
1098 rsi_91x_deinit(adapter);
1099 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
1100 return status;
1101}
1102
1103static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,
1104 u16 len_in_bits)
1105{
1106 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1,
1107 ((addr << 6) | ((data >> 16) & 0xffff)), 2);
1108 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0,
1109 (data & 0xffff), 2);
1110 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,
1111 RSI_GSPI_CTRL_REG0_VALUE, 2);
1112 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,
1113 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);
1114 msleep(20);
1115}
1116
1117/*This function resets and re-initializes the chip.*/
1118static void rsi_reset_chip(struct rsi_hw *adapter)
1119{
1120 u8 *data;
1121 u8 sdio_interrupt_status = 0;
1122 u8 request = 1;
1123 int ret;
1124
1125 data = kzalloc(sizeof(u32), GFP_KERNEL);
1126 if (!data)
1127 return;
1128
1129 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n");
1130 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request);
1131 if (ret < 0) {
1132 rsi_dbg(ERR_ZONE,
1133 "%s: Failed to write SDIO wakeup register\n", __func__);
1134 goto err;
1135 }
1136 msleep(20);
1137 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1138 &sdio_interrupt_status);
1139 if (ret < 0) {
1140 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n",
1141 __func__);
1142 goto err;
1143 }
1144 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n",
1145 __func__, sdio_interrupt_status);
1146
1147 /* Put Thread-Arch processor on hold */
1148 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) {
1149 rsi_dbg(ERR_ZONE,
1150 "%s: Unable to set ms word to common reg\n",
1151 __func__);
1152 goto err;
1153 }
1154
1155 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
1156 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG |
1157 RSI_SD_REQUEST_MASTER,
1158 data, 4)) {
1159 rsi_dbg(ERR_ZONE,
1160 "%s: Unable to hold Thread-Arch processor threads\n",
1161 __func__);
1162 goto err;
1163 }
1164
1165 /* This msleep will ensure Thread-Arch processor to go to hold
1166 * and any pending dma transfers to rf spi in device to finish.
1167 */
1168 msleep(100);
1169 if (adapter->device_model != RSI_DEV_9116) {
1170 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32);
1171 ulp_read_write(adapter,
1172 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32);
1173 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0,
1174 32);
1175 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1,
1176 RSI_ULP_WRITE_50, 32);
1177 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2,
1178 RSI_ULP_WRITE_0, 32);
1179 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE,
1180 RSI_ULP_TIMER_ENABLE, 32);
1181 } else {
1182 if ((rsi_sdio_master_reg_write(adapter,
1183 NWP_WWD_INTERRUPT_TIMER,
1184 NWP_WWD_INT_TIMER_CLKS,
1185 RSI_9116_REG_SIZE)) < 0) {
1186 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n");
1187 }
1188 if ((rsi_sdio_master_reg_write(adapter,
1189 NWP_WWD_SYSTEM_RESET_TIMER,
1190 NWP_WWD_SYS_RESET_TIMER_CLKS,
1191 RSI_9116_REG_SIZE)) < 0) {
1192 rsi_dbg(ERR_ZONE,
1193 "Failed to write to system reset timer\n");
1194 }
1195 if ((rsi_sdio_master_reg_write(adapter,
1196 NWP_WWD_MODE_AND_RSTART,
1197 NWP_WWD_TIMER_DISABLE,
1198 RSI_9116_REG_SIZE)) < 0) {
1199 rsi_dbg(ERR_ZONE,
1200 "Failed to write to mode and restart\n");
1201 }
1202 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n");
1203 }
1204 /* This msleep will be sufficient for the ulp
1205 * read write operations to complete for chip reset.
1206 */
1207 msleep(500);
1208err:
1209 kfree(data);
1210 return;
1211}
1212
1213/**
1214 * rsi_disconnect() - This function performs the reverse of the probe function.
1215 * @pfunction: Pointer to the sdio_func structure.
1216 *
1217 * Return: void.
1218 */
1219static void rsi_disconnect(struct sdio_func *pfunction)
1220{
1221 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1222 struct rsi_91x_sdiodev *dev;
1223
1224 if (!adapter)
1225 return;
1226
1227 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1228
1229 rsi_kill_thread(&dev->rx_thread);
1230 sdio_claim_host(pfunction);
1231 sdio_release_irq(pfunction);
1232 sdio_release_host(pfunction);
1233 mdelay(10);
1234
1235 rsi_mac80211_detach(adapter);
1236 mdelay(10);
1237
1238 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1239 adapter->priv->bt_adapter) {
1240 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1241 adapter->priv->bt_adapter = NULL;
1242 }
1243
1244 /* Reset Chip */
1245 rsi_reset_chip(adapter);
1246
1247 /* Resetting to take care of the case, where-in driver is re-loaded */
1248 sdio_claim_host(pfunction);
1249 rsi_reset_card(pfunction);
1250 sdio_disable_func(pfunction);
1251 sdio_release_host(pfunction);
1252 dev->write_fail = 2;
1253 rsi_91x_deinit(adapter);
1254 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n");
1255
1256}
1257
1258#ifdef CONFIG_PM
1259static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter)
1260{
1261 struct rsi_91x_sdiodev *dev =
1262 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1263 struct sdio_func *func = dev->pfunction;
1264 int ret;
1265
1266 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1267 if (ret)
1268 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret);
1269
1270 return ret;
1271}
1272
1273static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc)
1274{
1275 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1276 u8 isr_status = 0, data = 0;
1277 int ret;
1278 unsigned long t1;
1279
1280 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared..");
1281 t1 = jiffies;
1282 do {
1283 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1284 &isr_status);
1285 rsi_dbg(INFO_ZONE, ".");
1286 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20));
1287 rsi_dbg(INFO_ZONE, "Interrupts cleared\n");
1288
1289 sdio_claim_host(pfunc);
1290 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1291 if (ret < 0) {
1292 rsi_dbg(ERR_ZONE,
1293 "%s: Failed to read int enable register\n",
1294 __func__);
1295 goto done;
1296 }
1297
1298 data &= RSI_INT_ENABLE_MASK;
1299 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1300 if (ret < 0) {
1301 rsi_dbg(ERR_ZONE,
1302 "%s: Failed to write to int enable register\n",
1303 __func__);
1304 goto done;
1305 }
1306 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1307 if (ret < 0) {
1308 rsi_dbg(ERR_ZONE,
1309 "%s: Failed to read int enable register\n",
1310 __func__);
1311 goto done;
1312 }
1313 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1314
1315done:
1316 sdio_release_host(pfunc);
1317 return ret;
1318}
1319
1320static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc)
1321{
1322 u8 data;
1323 int ret;
1324 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1325 struct rsi_common *common = adapter->priv;
1326
1327 sdio_claim_host(pfunc);
1328 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1329 if (ret < 0) {
1330 rsi_dbg(ERR_ZONE,
1331 "%s: Failed to read int enable register\n", __func__);
1332 goto done;
1333 }
1334
1335 data |= ~RSI_INT_ENABLE_MASK & 0xff;
1336
1337 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1338 if (ret < 0) {
1339 rsi_dbg(ERR_ZONE,
1340 "%s: Failed to write to int enable register\n",
1341 __func__);
1342 goto done;
1343 }
1344
1345 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1346 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1347 rsi_dbg(ERR_ZONE,
1348 "##### Device can not wake up through WLAN\n");
1349
1350 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1351 if (ret < 0) {
1352 rsi_dbg(ERR_ZONE,
1353 "%s: Failed to read int enable register\n", __func__);
1354 goto done;
1355 }
1356 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1357
1358done:
1359 sdio_release_host(pfunc);
1360 return ret;
1361}
1362
1363static int rsi_suspend(struct device *dev)
1364{
1365 int ret;
1366 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1367 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1368 struct rsi_common *common;
1369
1370 if (!adapter) {
1371 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1372 return -ENODEV;
1373 }
1374 common = adapter->priv;
1375 rsi_sdio_disable_interrupts(pfunction);
1376
1377 ret = rsi_set_sdio_pm_caps(adapter);
1378 if (ret)
1379 rsi_dbg(INFO_ZONE,
1380 "Setting power management caps failed\n");
1381 common->fsm_state = FSM_CARD_NOT_READY;
1382
1383 return 0;
1384}
1385
1386static int rsi_resume(struct device *dev)
1387{
1388 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1389 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1390 struct rsi_common *common = adapter->priv;
1391
1392 common->fsm_state = FSM_MAC_INIT_DONE;
1393 rsi_sdio_enable_interrupts(pfunction);
1394
1395 return 0;
1396}
1397
1398static int rsi_freeze(struct device *dev)
1399{
1400 int ret;
1401 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1402 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1403 struct rsi_common *common;
1404 struct rsi_91x_sdiodev *sdev;
1405
1406 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n");
1407
1408 if (!adapter) {
1409 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1410 return -ENODEV;
1411 }
1412 common = adapter->priv;
1413 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1414
1415 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1416 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1417 rsi_dbg(ERR_ZONE,
1418 "##### Device can not wake up through WLAN\n");
1419
1420 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 &&
1421 common->bt_adapter) {
1422 rsi_bt_ops.detach(common->bt_adapter);
1423 common->bt_adapter = NULL;
1424 }
1425
1426 ret = rsi_sdio_disable_interrupts(pfunction);
1427
1428 if (sdev->write_fail)
1429 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1430
1431 ret = rsi_set_sdio_pm_caps(adapter);
1432 if (ret)
1433 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1434
1435 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n");
1436
1437 return 0;
1438}
1439
1440static int rsi_thaw(struct device *dev)
1441{
1442 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1443 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1444 struct rsi_common *common = adapter->priv;
1445
1446 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n");
1447
1448 common->hibernate_resume = true;
1449 common->fsm_state = FSM_CARD_NOT_READY;
1450 common->iface_down = true;
1451
1452 rsi_sdio_enable_interrupts(pfunction);
1453
1454 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n");
1455
1456 return 0;
1457}
1458
1459static void rsi_shutdown(struct device *dev)
1460{
1461 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1462 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1463 struct rsi_91x_sdiodev *sdev =
1464 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1465 struct ieee80211_hw *hw = adapter->hw;
1466
1467 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n");
1468
1469 if (hw) {
1470 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
1471
1472 if (rsi_config_wowlan(adapter, wowlan))
1473 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1474 }
1475
1476 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1477 adapter->priv->bt_adapter) {
1478 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1479 adapter->priv->bt_adapter = NULL;
1480 }
1481
1482 rsi_sdio_disable_interrupts(sdev->pfunction);
1483
1484 if (sdev->write_fail)
1485 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1486
1487 if (rsi_set_sdio_pm_caps(adapter))
1488 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1489
1490 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n");
1491}
1492
1493static int rsi_restore(struct device *dev)
1494{
1495 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1496 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1497 struct rsi_common *common = adapter->priv;
1498
1499 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n");
1500 common->hibernate_resume = true;
1501 common->fsm_state = FSM_FW_NOT_LOADED;
1502 common->iface_down = true;
1503
1504 adapter->sc_nvifs = 0;
1505 adapter->ps_state = PS_NONE;
1506
1507 common->wow_flags = 0;
1508 common->iface_down = false;
1509
1510 rsi_dbg(INFO_ZONE, "RSI module restored\n");
1511
1512 return 0;
1513}
1514static const struct dev_pm_ops rsi_pm_ops = {
1515 .suspend = rsi_suspend,
1516 .resume_noirq = rsi_resume,
1517 .freeze = rsi_freeze,
1518 .thaw = rsi_thaw,
1519 .restore = rsi_restore,
1520};
1521#endif
1522
1523static const struct sdio_device_id rsi_dev_table[] = {
1524 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) },
1525 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) },
1526 { /* Blank */},
1527};
1528
1529static struct sdio_driver rsi_driver = {
1530 .name = "RSI-SDIO WLAN",
1531 .probe = rsi_probe,
1532 .remove = rsi_disconnect,
1533 .id_table = rsi_dev_table,
1534#ifdef CONFIG_PM
1535 .drv = {
1536 .pm = &rsi_pm_ops,
1537 .shutdown = rsi_shutdown,
1538 }
1539#endif
1540};
1541
1542/**
1543 * rsi_module_init() - This function registers the sdio module.
1544 * @void: Void.
1545 *
1546 * Return: 0 on success.
1547 */
1548static int rsi_module_init(void)
1549{
1550 int ret;
1551
1552 ret = sdio_register_driver(&rsi_driver);
1553 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__);
1554 return ret;
1555}
1556
1557/**
1558 * rsi_module_exit() - This function unregisters the sdio module.
1559 * @void: Void.
1560 *
1561 * Return: None.
1562 */
1563static void rsi_module_exit(void)
1564{
1565 sdio_unregister_driver(&rsi_driver);
1566 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__);
1567}
1568
1569module_init(rsi_module_init);
1570module_exit(rsi_module_exit);
1571
1572MODULE_AUTHOR("Redpine Signals Inc");
1573MODULE_DESCRIPTION("Common SDIO layer for RSI drivers");
1574MODULE_DEVICE_TABLE(sdio, rsi_dev_table);
1575MODULE_FIRMWARE(FIRMWARE_RSI9113);
1576MODULE_VERSION("0.1");
1577MODULE_LICENSE("Dual BSD/GPL");