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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 dev->sdio_irq_task = current;
157 rsi_interrupt_handler(adapter);
158 dev->sdio_irq_task = NULL;
159}
160
161/**
162 * rsi_reset_card() - This function resets and re-initializes the card.
163 * @pfunction: Pointer to the sdio_func structure.
164 *
165 * Return: None.
166 */
167static void rsi_reset_card(struct sdio_func *pfunction)
168{
169 int ret = 0;
170 int err;
171 struct mmc_card *card = pfunction->card;
172 struct mmc_host *host = card->host;
173 u8 cmd52_resp;
174 u32 clock, resp, i;
175 u16 rca;
176
177 /* Reset 9110 chip */
178 ret = rsi_cmd52writebyte(pfunction->card,
179 SDIO_CCCR_ABORT,
180 (1 << 3));
181
182 /* Card will not send any response as it is getting reset immediately
183 * Hence expect a timeout status from host controller
184 */
185 if (ret != -ETIMEDOUT)
186 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret);
187
188 /* Wait for few milli seconds to get rid of residue charges if any */
189 msleep(20);
190
191 /* Initialize the SDIO card */
192 host->ios.chip_select = MMC_CS_DONTCARE;
193 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
194 host->ios.power_mode = MMC_POWER_UP;
195 host->ios.bus_width = MMC_BUS_WIDTH_1;
196 host->ios.timing = MMC_TIMING_LEGACY;
197 host->ops->set_ios(host, &host->ios);
198
199 /*
200 * This delay should be sufficient to allow the power supply
201 * to reach the minimum voltage.
202 */
203 msleep(20);
204
205 host->ios.clock = host->f_min;
206 host->ios.power_mode = MMC_POWER_ON;
207 host->ops->set_ios(host, &host->ios);
208
209 /*
210 * This delay must be at least 74 clock sizes, or 1 ms, or the
211 * time required to reach a stable voltage.
212 */
213 msleep(20);
214
215 /* Issue CMD0. Goto idle state */
216 host->ios.chip_select = MMC_CS_HIGH;
217 host->ops->set_ios(host, &host->ios);
218 msleep(20);
219 err = rsi_issue_sdiocommand(pfunction,
220 MMC_GO_IDLE_STATE,
221 0,
222 (MMC_RSP_NONE | MMC_CMD_BC),
223 NULL);
224 host->ios.chip_select = MMC_CS_DONTCARE;
225 host->ops->set_ios(host, &host->ios);
226 msleep(20);
227 host->use_spi_crc = 0;
228
229 if (err)
230 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err);
231
232 /* Issue CMD5, arg = 0 */
233 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0,
234 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
235 if (err)
236 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
237 __func__, err);
238 card->ocr = resp;
239 /* Issue CMD5, arg = ocr. Wait till card is ready */
240 for (i = 0; i < 100; i++) {
241 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND,
242 card->ocr,
243 (MMC_RSP_R4 | MMC_CMD_BCR), &resp);
244 if (err) {
245 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n",
246 __func__, err);
247 break;
248 }
249
250 if (resp & MMC_CARD_BUSY)
251 break;
252 msleep(20);
253 }
254
255 if ((i == 100) || (err)) {
256 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n",
257 __func__, i, err);
258 return;
259 }
260
261 /* Issue CMD3, get RCA */
262 err = rsi_issue_sdiocommand(pfunction,
263 SD_SEND_RELATIVE_ADDR,
264 0,
265 (MMC_RSP_R6 | MMC_CMD_BCR),
266 &resp);
267 if (err) {
268 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err);
269 return;
270 }
271 rca = resp >> 16;
272 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
273 host->ops->set_ios(host, &host->ios);
274
275 /* Issue CMD7, select card */
276 err = rsi_issue_sdiocommand(pfunction,
277 MMC_SELECT_CARD,
278 (rca << 16),
279 (MMC_RSP_R1 | MMC_CMD_AC),
280 NULL);
281 if (err) {
282 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err);
283 return;
284 }
285
286 /* Enable high speed */
287 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) {
288 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__);
289 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp);
290 if (err) {
291 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n",
292 __func__, err);
293 } else {
294 err = rsi_cmd52writebyte(card,
295 SDIO_CCCR_SPEED,
296 (cmd52_resp | SDIO_SPEED_EHS));
297 if (err) {
298 rsi_dbg(ERR_ZONE,
299 "%s: CCR speed regwrite failed %d\n",
300 __func__, err);
301 return;
302 }
303 host->ios.timing = MMC_TIMING_SD_HS;
304 host->ops->set_ios(host, &host->ios);
305 }
306 }
307
308 /* Set clock */
309 if (mmc_card_hs(card))
310 clock = 50000000;
311 else
312 clock = card->cis.max_dtr;
313
314 if (clock > host->f_max)
315 clock = host->f_max;
316
317 host->ios.clock = clock;
318 host->ops->set_ios(host, &host->ios);
319
320 if (card->host->caps & MMC_CAP_4_BIT_DATA) {
321 /* CMD52: Set bus width & disable card detect resistor */
322 err = rsi_cmd52writebyte(card,
323 SDIO_CCCR_IF,
324 (SDIO_BUS_CD_DISABLE |
325 SDIO_BUS_WIDTH_4BIT));
326 if (err) {
327 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n",
328 __func__, err);
329 return;
330 }
331 host->ios.bus_width = MMC_BUS_WIDTH_4;
332 host->ops->set_ios(host, &host->ios);
333 }
334}
335
336/**
337 * rsi_setclock() - This function sets the clock frequency.
338 * @adapter: Pointer to the adapter structure.
339 * @freq: Clock frequency.
340 *
341 * Return: None.
342 */
343static void rsi_setclock(struct rsi_hw *adapter, u32 freq)
344{
345 struct rsi_91x_sdiodev *dev =
346 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
347 struct mmc_host *host = dev->pfunction->card->host;
348 u32 clock;
349
350 clock = freq * 1000;
351 if (clock > host->f_max)
352 clock = host->f_max;
353 host->ios.clock = clock;
354 host->ops->set_ios(host, &host->ios);
355}
356
357/**
358 * rsi_setblocklength() - This function sets the host block length.
359 * @adapter: Pointer to the adapter structure.
360 * @length: Block length to be set.
361 *
362 * Return: status: 0 on success, -1 on failure.
363 */
364static int rsi_setblocklength(struct rsi_hw *adapter, u32 length)
365{
366 struct rsi_91x_sdiodev *dev =
367 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
368 int status;
369 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__);
370
371 status = sdio_set_block_size(dev->pfunction, length);
372 dev->pfunction->max_blksize = 256;
373 adapter->block_size = dev->pfunction->max_blksize;
374
375 rsi_dbg(INFO_ZONE,
376 "%s: Operational blk length is %d\n", __func__, length);
377 return status;
378}
379
380/**
381 * rsi_setupcard() - This function queries and sets the card's features.
382 * @adapter: Pointer to the adapter structure.
383 *
384 * Return: status: 0 on success, -1 on failure.
385 */
386static int rsi_setupcard(struct rsi_hw *adapter)
387{
388 struct rsi_91x_sdiodev *dev =
389 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
390 int status = 0;
391
392 rsi_setclock(adapter, 50000);
393
394 dev->tx_blk_size = 256;
395 status = rsi_setblocklength(adapter, dev->tx_blk_size);
396 if (status)
397 rsi_dbg(ERR_ZONE,
398 "%s: Unable to set block length\n", __func__);
399 return status;
400}
401
402/**
403 * rsi_sdio_read_register() - This function reads one byte of information
404 * from a register.
405 * @adapter: Pointer to the adapter structure.
406 * @addr: Address of the register.
407 * @data: Pointer to the data that stores the data read.
408 *
409 * Return: 0 on success, -1 on failure.
410 */
411int rsi_sdio_read_register(struct rsi_hw *adapter,
412 u32 addr,
413 u8 *data)
414{
415 struct rsi_91x_sdiodev *dev =
416 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
417 u8 fun_num = 0;
418 int status;
419
420 if (likely(dev->sdio_irq_task != current))
421 sdio_claim_host(dev->pfunction);
422
423 if (fun_num == 0)
424 *data = sdio_f0_readb(dev->pfunction, addr, &status);
425 else
426 *data = sdio_readb(dev->pfunction, addr, &status);
427
428 if (likely(dev->sdio_irq_task != current))
429 sdio_release_host(dev->pfunction);
430
431 return status;
432}
433
434/**
435 * rsi_sdio_write_register() - This function writes one byte of information
436 * into a register.
437 * @adapter: Pointer to the adapter structure.
438 * @function: Function Number.
439 * @addr: Address of the register.
440 * @data: Pointer to the data tha has to be written.
441 *
442 * Return: 0 on success, -1 on failure.
443 */
444int rsi_sdio_write_register(struct rsi_hw *adapter,
445 u8 function,
446 u32 addr,
447 u8 *data)
448{
449 struct rsi_91x_sdiodev *dev =
450 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
451 int status = 0;
452
453 if (likely(dev->sdio_irq_task != current))
454 sdio_claim_host(dev->pfunction);
455
456 if (function == 0)
457 sdio_f0_writeb(dev->pfunction, *data, addr, &status);
458 else
459 sdio_writeb(dev->pfunction, *data, addr, &status);
460
461 if (likely(dev->sdio_irq_task != current))
462 sdio_release_host(dev->pfunction);
463
464 return status;
465}
466
467/**
468 * rsi_sdio_ack_intr() - This function acks the interrupt received.
469 * @adapter: Pointer to the adapter structure.
470 * @int_bit: Interrupt bit to write into register.
471 *
472 * Return: None.
473 */
474void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit)
475{
476 int status;
477 status = rsi_sdio_write_register(adapter,
478 1,
479 (SDIO_FUN1_INTR_CLR_REG |
480 RSI_SD_REQUEST_MASTER),
481 &int_bit);
482 if (status)
483 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__);
484}
485
486
487
488/**
489 * rsi_sdio_read_register_multiple() - This function read multiple bytes of
490 * information from the SD card.
491 * @adapter: Pointer to the adapter structure.
492 * @addr: Address of the register.
493 * @count: Number of multiple bytes to be read.
494 * @data: Pointer to the read data.
495 *
496 * Return: 0 on success, -1 on failure.
497 */
498static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter,
499 u32 addr,
500 u8 *data,
501 u16 count)
502{
503 struct rsi_91x_sdiodev *dev =
504 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
505 u32 status;
506
507 if (likely(dev->sdio_irq_task != current))
508 sdio_claim_host(dev->pfunction);
509
510 status = sdio_readsb(dev->pfunction, data, addr, count);
511
512 if (likely(dev->sdio_irq_task != current))
513 sdio_release_host(dev->pfunction);
514
515 if (status != 0)
516 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__);
517 return status;
518}
519
520/**
521 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of
522 * information to the SD card.
523 * @adapter: Pointer to the adapter structure.
524 * @addr: Address of the register.
525 * @data: Pointer to the data that has to be written.
526 * @count: Number of multiple bytes to be written.
527 *
528 * Return: 0 on success, -1 on failure.
529 */
530int rsi_sdio_write_register_multiple(struct rsi_hw *adapter,
531 u32 addr,
532 u8 *data,
533 u16 count)
534{
535 struct rsi_91x_sdiodev *dev =
536 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
537 int status;
538
539 if (dev->write_fail > 1) {
540 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__);
541 return 0;
542 } else if (dev->write_fail == 1) {
543 /**
544 * Assuming it is a CRC failure, we want to allow another
545 * card write
546 */
547 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__);
548 dev->write_fail++;
549 }
550
551 if (likely(dev->sdio_irq_task != current))
552 sdio_claim_host(dev->pfunction);
553
554 status = sdio_writesb(dev->pfunction, addr, data, count);
555
556 if (likely(dev->sdio_irq_task != current))
557 sdio_release_host(dev->pfunction);
558
559 if (status) {
560 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n",
561 __func__, status);
562 dev->write_fail = 2;
563 } else {
564 memcpy(dev->prev_desc, data, FRAME_DESC_SZ);
565 }
566 return status;
567}
568
569static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter,
570 u32 base_address,
571 u32 instructions_sz,
572 u16 block_size,
573 u8 *ta_firmware)
574{
575 u32 num_blocks, offset, i;
576 u16 msb_address, lsb_address;
577 u8 *temp_buf;
578 int status;
579
580 num_blocks = instructions_sz / block_size;
581 msb_address = base_address >> 16;
582
583 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n",
584 instructions_sz, num_blocks);
585
586 temp_buf = kmalloc(block_size, GFP_KERNEL);
587 if (!temp_buf)
588 return -ENOMEM;
589
590 /* Loading DM ms word in the sdio slave */
591 status = rsi_sdio_master_access_msword(adapter, msb_address);
592 if (status < 0) {
593 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
594 goto out_free;
595 }
596
597 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) {
598 memcpy(temp_buf, ta_firmware + offset, block_size);
599 lsb_address = (u16)base_address;
600 status = rsi_sdio_write_register_multiple
601 (adapter,
602 lsb_address | RSI_SD_REQUEST_MASTER,
603 temp_buf, block_size);
604 if (status < 0) {
605 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__);
606 goto out_free;
607 }
608 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i);
609 base_address += block_size;
610
611 if ((base_address >> 16) != msb_address) {
612 msb_address += 1;
613
614 /* Loading DM ms word in the sdio slave */
615 status = rsi_sdio_master_access_msword(adapter,
616 msb_address);
617 if (status < 0) {
618 rsi_dbg(ERR_ZONE,
619 "%s: Unable to set ms word reg\n",
620 __func__);
621 goto out_free;
622 }
623 }
624 }
625
626 if (instructions_sz % block_size) {
627 memset(temp_buf, 0, block_size);
628 memcpy(temp_buf, ta_firmware + offset,
629 instructions_sz % block_size);
630 lsb_address = (u16)base_address;
631 status = rsi_sdio_write_register_multiple
632 (adapter,
633 lsb_address | RSI_SD_REQUEST_MASTER,
634 temp_buf,
635 instructions_sz % block_size);
636 if (status < 0)
637 goto out_free;
638 rsi_dbg(INFO_ZONE,
639 "Written Last Block in Address 0x%x Successfully\n",
640 offset | RSI_SD_REQUEST_MASTER);
641 }
642
643 status = 0;
644out_free:
645 kfree(temp_buf);
646 return status;
647}
648
649#define FLASH_SIZE_ADDR 0x04000016
650static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr,
651 u32 *read_buf, u16 size)
652{
653 u32 addr_on_bus, *data;
654 u16 ms_addr;
655 int status;
656
657 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
658 if (!data)
659 return -ENOMEM;
660
661 ms_addr = (addr >> 16);
662 status = rsi_sdio_master_access_msword(adapter, ms_addr);
663 if (status < 0) {
664 rsi_dbg(ERR_ZONE,
665 "%s: Unable to set ms word to common reg\n",
666 __func__);
667 goto err;
668 }
669 addr &= 0xFFFF;
670
671 addr_on_bus = (addr & 0xFF000000);
672 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) ||
673 (addr_on_bus == 0x0))
674 addr_on_bus = (addr & ~(0x3));
675 else
676 addr_on_bus = addr;
677
678 /* Bring TA out of reset */
679 status = rsi_sdio_read_register_multiple
680 (adapter,
681 (addr_on_bus | RSI_SD_REQUEST_MASTER),
682 (u8 *)data, 4);
683 if (status < 0) {
684 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__);
685 goto err;
686 }
687 if (size == 2) {
688 if ((addr & 0x3) == 0)
689 *read_buf = *data;
690 else
691 *read_buf = (*data >> 16);
692 *read_buf = (*read_buf & 0xFFFF);
693 } else if (size == 1) {
694 if ((addr & 0x3) == 0)
695 *read_buf = *data;
696 else if ((addr & 0x3) == 1)
697 *read_buf = (*data >> 8);
698 else if ((addr & 0x3) == 2)
699 *read_buf = (*data >> 16);
700 else
701 *read_buf = (*data >> 24);
702 *read_buf = (*read_buf & 0xFF);
703 } else {
704 *read_buf = *data;
705 }
706
707err:
708 kfree(data);
709 return status;
710}
711
712static int rsi_sdio_master_reg_write(struct rsi_hw *adapter,
713 unsigned long addr,
714 unsigned long data, u16 size)
715{
716 unsigned long *data_aligned;
717 int status;
718
719 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL);
720 if (!data_aligned)
721 return -ENOMEM;
722
723 if (size == 2) {
724 *data_aligned = ((data << 16) | (data & 0xFFFF));
725 } else if (size == 1) {
726 u32 temp_data = data & 0xFF;
727
728 *data_aligned = ((temp_data << 24) | (temp_data << 16) |
729 (temp_data << 8) | temp_data);
730 } else {
731 *data_aligned = data;
732 }
733 size = 4;
734
735 status = rsi_sdio_master_access_msword(adapter, (addr >> 16));
736 if (status < 0) {
737 rsi_dbg(ERR_ZONE,
738 "%s: Unable to set ms word to common reg\n",
739 __func__);
740 kfree(data_aligned);
741 return -EIO;
742 }
743 addr = addr & 0xFFFF;
744
745 /* Bring TA out of reset */
746 status = rsi_sdio_write_register_multiple
747 (adapter,
748 (addr | RSI_SD_REQUEST_MASTER),
749 (u8 *)data_aligned, size);
750 if (status < 0)
751 rsi_dbg(ERR_ZONE,
752 "%s: Unable to do AHB reg write\n", __func__);
753
754 kfree(data_aligned);
755 return status;
756}
757
758/**
759 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device.
760 * @adapter: Pointer to the adapter structure.
761 * @pkt: Pointer to the data to be written on to the device.
762 * @len: length of the data to be written on to the device.
763 *
764 * Return: 0 on success, -1 on failure.
765 */
766static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter,
767 u8 *pkt,
768 u32 len)
769{
770 struct rsi_91x_sdiodev *dev =
771 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
772 u32 block_size = dev->tx_blk_size;
773 u32 num_blocks, address, length;
774 u32 queueno;
775 int status;
776
777 queueno = ((pkt[1] >> 4) & 0xf);
778 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q)
779 queueno = RSI_BT_Q;
780
781 num_blocks = len / block_size;
782
783 if (len % block_size)
784 num_blocks++;
785
786 address = (num_blocks * block_size | (queueno << 12));
787 length = num_blocks * block_size;
788
789 status = rsi_sdio_write_register_multiple(adapter,
790 address,
791 (u8 *)pkt,
792 length);
793 if (status)
794 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n",
795 __func__, status);
796 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__);
797 return status;
798}
799
800/**
801 * rsi_sdio_host_intf_read_pkt() - This function reads the packet
802 from the device.
803 * @adapter: Pointer to the adapter data structure.
804 * @pkt: Pointer to the packet data to be read from the the device.
805 * @length: Length of the data to be read from the device.
806 *
807 * Return: 0 on success, -1 on failure.
808 */
809int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter,
810 u8 *pkt,
811 u32 length)
812{
813 int status = -EINVAL;
814
815 if (!length) {
816 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__);
817 return status;
818 }
819
820 status = rsi_sdio_read_register_multiple(adapter,
821 length,
822 (u8 *)pkt,
823 length); /*num of bytes*/
824
825 if (status)
826 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__,
827 status);
828 return status;
829}
830
831/**
832 * rsi_init_sdio_interface() - This function does init specific to SDIO.
833 *
834 * @adapter: Pointer to the adapter data structure.
835 * @pkt: Pointer to the packet data to be read from the the device.
836 *
837 * Return: 0 on success, -1 on failure.
838 */
839
840static int rsi_init_sdio_interface(struct rsi_hw *adapter,
841 struct sdio_func *pfunction)
842{
843 struct rsi_91x_sdiodev *rsi_91x_dev;
844 int status;
845
846 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL);
847 if (!rsi_91x_dev)
848 return -ENOMEM;
849
850 adapter->rsi_dev = rsi_91x_dev;
851
852 sdio_claim_host(pfunction);
853
854 pfunction->enable_timeout = 100;
855 status = sdio_enable_func(pfunction);
856 if (status) {
857 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__);
858 sdio_release_host(pfunction);
859 return status;
860 }
861
862 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__);
863
864 rsi_91x_dev->pfunction = pfunction;
865 adapter->device = &pfunction->dev;
866
867 sdio_set_drvdata(pfunction, adapter);
868
869 status = rsi_setupcard(adapter);
870 if (status) {
871 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__);
872 goto fail;
873 }
874
875 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__);
876
877 status = rsi_init_sdio_slave_regs(adapter);
878 if (status) {
879 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__);
880 goto fail;
881 }
882 sdio_release_host(pfunction);
883
884 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout;
885 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status;
886
887#ifdef CONFIG_RSI_DEBUGFS
888 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES;
889#endif
890 return 0;
891fail:
892 sdio_disable_func(pfunction);
893 sdio_release_host(pfunction);
894 return status;
895}
896
897static int rsi_sdio_reinit_device(struct rsi_hw *adapter)
898{
899 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev;
900 struct sdio_func *pfunction = sdev->pfunction;
901 int ii;
902
903 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++)
904 skb_queue_purge(&adapter->priv->tx_queue[ii]);
905
906 /* Initialize device again */
907 sdio_claim_host(pfunction);
908
909 sdio_release_irq(pfunction);
910 rsi_reset_card(pfunction);
911
912 sdio_enable_func(pfunction);
913 rsi_setupcard(adapter);
914 rsi_init_sdio_slave_regs(adapter);
915 sdio_claim_irq(pfunction, rsi_handle_interrupt);
916 rsi_hal_device_init(adapter);
917
918 sdio_release_host(pfunction);
919
920 return 0;
921}
922
923static int rsi_sdio_ta_reset(struct rsi_hw *adapter)
924{
925 int status;
926 u32 addr;
927 u8 *data;
928
929 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL);
930 if (!data)
931 return -ENOMEM;
932
933 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR);
934 if (status < 0) {
935 rsi_dbg(ERR_ZONE,
936 "Unable to set ms word to common reg\n");
937 goto err;
938 }
939
940 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__);
941 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
942 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER;
943 status = rsi_sdio_write_register_multiple(adapter, addr,
944 (u8 *)data,
945 RSI_9116_REG_SIZE);
946 if (status < 0) {
947 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n");
948 goto err;
949 }
950
951 put_unaligned_le32(TA_SOFT_RST_CLR, data);
952 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER;
953 status = rsi_sdio_write_register_multiple(adapter, addr,
954 (u8 *)data,
955 RSI_9116_REG_SIZE);
956 if (status < 0) {
957 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n");
958 goto err;
959 }
960
961 put_unaligned_le32(TA_PC_ZERO, data);
962 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER;
963 status = rsi_sdio_write_register_multiple(adapter, addr,
964 (u8 *)data,
965 RSI_9116_REG_SIZE);
966 if (status < 0) {
967 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n");
968 status = -EINVAL;
969 goto err;
970 }
971
972 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data);
973 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER;
974 status = rsi_sdio_write_register_multiple(adapter, addr,
975 (u8 *)data,
976 RSI_9116_REG_SIZE);
977 if (status < 0) {
978 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n");
979 goto err;
980 }
981
982 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR);
983 if (status < 0) {
984 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n");
985 goto err;
986 }
987 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n");
988
989err:
990 kfree(data);
991 return status;
992}
993
994static struct rsi_host_intf_ops sdio_host_intf_ops = {
995 .write_pkt = rsi_sdio_host_intf_write_pkt,
996 .read_pkt = rsi_sdio_host_intf_read_pkt,
997 .master_access_msword = rsi_sdio_master_access_msword,
998 .read_reg_multiple = rsi_sdio_read_register_multiple,
999 .write_reg_multiple = rsi_sdio_write_register_multiple,
1000 .master_reg_read = rsi_sdio_master_reg_read,
1001 .master_reg_write = rsi_sdio_master_reg_write,
1002 .load_data_master_write = rsi_sdio_load_data_master_write,
1003 .reinit_device = rsi_sdio_reinit_device,
1004 .ta_reset = rsi_sdio_ta_reset,
1005};
1006
1007/**
1008 * rsi_probe() - This function is called by kernel when the driver provided
1009 * Vendor and device IDs are matched. All the initialization
1010 * work is done here.
1011 * @pfunction: Pointer to the sdio_func structure.
1012 * @id: Pointer to sdio_device_id structure.
1013 *
1014 * Return: 0 on success, 1 on failure.
1015 */
1016static int rsi_probe(struct sdio_func *pfunction,
1017 const struct sdio_device_id *id)
1018{
1019 struct rsi_hw *adapter;
1020 struct rsi_91x_sdiodev *sdev;
1021 int status = -EINVAL;
1022
1023 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__);
1024
1025 adapter = rsi_91x_init(dev_oper_mode);
1026 if (!adapter) {
1027 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n",
1028 __func__);
1029 return -EINVAL;
1030 }
1031 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO;
1032 adapter->host_intf_ops = &sdio_host_intf_ops;
1033
1034 if (rsi_init_sdio_interface(adapter, pfunction)) {
1035 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n",
1036 __func__);
1037 status = -EIO;
1038 goto fail_free_adapter;
1039 }
1040
1041 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) {
1042 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__);
1043 adapter->device_model = RSI_DEV_9113;
1044 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) {
1045 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__);
1046 adapter->device_model = RSI_DEV_9116;
1047 } else {
1048 rsi_dbg(ERR_ZONE,
1049 "%s: Unsupported RSI device id 0x%x\n", __func__,
1050 pfunction->device);
1051 goto fail_free_adapter;
1052 }
1053
1054 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1055 rsi_init_event(&sdev->rx_thread.event);
1056 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread,
1057 rsi_sdio_rx_thread, "SDIO-RX-Thread");
1058 if (status) {
1059 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__);
1060 goto fail_kill_thread;
1061 }
1062 skb_queue_head_init(&sdev->rx_q.head);
1063 sdev->rx_q.num_rx_pkts = 0;
1064
1065 sdio_claim_host(pfunction);
1066 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) {
1067 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__);
1068 sdio_release_host(pfunction);
1069 status = -EIO;
1070 goto fail_claim_irq;
1071 }
1072 sdio_release_host(pfunction);
1073 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__);
1074
1075 if (rsi_hal_device_init(adapter)) {
1076 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__);
1077 status = -EINVAL;
1078 goto fail_dev_init;
1079 }
1080 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n");
1081
1082 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) {
1083 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__);
1084 status = -EIO;
1085 goto fail_dev_init;
1086 }
1087
1088 adapter->priv->hibernate_resume = false;
1089 adapter->priv->reinit_hw = false;
1090 return 0;
1091
1092fail_dev_init:
1093 sdio_claim_host(pfunction);
1094 sdio_release_irq(pfunction);
1095 sdio_release_host(pfunction);
1096fail_claim_irq:
1097 rsi_kill_thread(&sdev->rx_thread);
1098fail_kill_thread:
1099 sdio_claim_host(pfunction);
1100 sdio_disable_func(pfunction);
1101 sdio_release_host(pfunction);
1102fail_free_adapter:
1103 rsi_91x_deinit(adapter);
1104 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__);
1105 return status;
1106}
1107
1108static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data,
1109 u16 len_in_bits)
1110{
1111 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1,
1112 ((addr << 6) | ((data >> 16) & 0xffff)), 2);
1113 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0,
1114 (data & 0xffff), 2);
1115 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0,
1116 RSI_GSPI_CTRL_REG0_VALUE, 2);
1117 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1,
1118 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2);
1119 msleep(20);
1120}
1121
1122/*This function resets and re-initializes the chip.*/
1123static void rsi_reset_chip(struct rsi_hw *adapter)
1124{
1125 u8 *data;
1126 u8 sdio_interrupt_status = 0;
1127 u8 request = 1;
1128 int ret;
1129
1130 data = kzalloc(sizeof(u32), GFP_KERNEL);
1131 if (!data)
1132 return;
1133
1134 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n");
1135 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request);
1136 if (ret < 0) {
1137 rsi_dbg(ERR_ZONE,
1138 "%s: Failed to write SDIO wakeup register\n", __func__);
1139 goto err;
1140 }
1141 msleep(20);
1142 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1143 &sdio_interrupt_status);
1144 if (ret < 0) {
1145 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n",
1146 __func__);
1147 goto err;
1148 }
1149 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n",
1150 __func__, sdio_interrupt_status);
1151
1152 /* Put Thread-Arch processor on hold */
1153 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) {
1154 rsi_dbg(ERR_ZONE,
1155 "%s: Unable to set ms word to common reg\n",
1156 __func__);
1157 goto err;
1158 }
1159
1160 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
1161 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG |
1162 RSI_SD_REQUEST_MASTER,
1163 data, 4)) {
1164 rsi_dbg(ERR_ZONE,
1165 "%s: Unable to hold Thread-Arch processor threads\n",
1166 __func__);
1167 goto err;
1168 }
1169
1170 /* This msleep will ensure Thread-Arch processor to go to hold
1171 * and any pending dma transfers to rf spi in device to finish.
1172 */
1173 msleep(100);
1174 if (adapter->device_model != RSI_DEV_9116) {
1175 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32);
1176 ulp_read_write(adapter,
1177 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32);
1178 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0,
1179 32);
1180 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1,
1181 RSI_ULP_WRITE_50, 32);
1182 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2,
1183 RSI_ULP_WRITE_0, 32);
1184 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE,
1185 RSI_ULP_TIMER_ENABLE, 32);
1186 } else {
1187 if ((rsi_sdio_master_reg_write(adapter,
1188 NWP_WWD_INTERRUPT_TIMER,
1189 NWP_WWD_INT_TIMER_CLKS,
1190 RSI_9116_REG_SIZE)) < 0) {
1191 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n");
1192 }
1193 if ((rsi_sdio_master_reg_write(adapter,
1194 NWP_WWD_SYSTEM_RESET_TIMER,
1195 NWP_WWD_SYS_RESET_TIMER_CLKS,
1196 RSI_9116_REG_SIZE)) < 0) {
1197 rsi_dbg(ERR_ZONE,
1198 "Failed to write to system reset timer\n");
1199 }
1200 if ((rsi_sdio_master_reg_write(adapter,
1201 NWP_WWD_MODE_AND_RSTART,
1202 NWP_WWD_TIMER_DISABLE,
1203 RSI_9116_REG_SIZE)) < 0) {
1204 rsi_dbg(ERR_ZONE,
1205 "Failed to write to mode and restart\n");
1206 }
1207 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n");
1208 }
1209 /* This msleep will be sufficient for the ulp
1210 * read write operations to complete for chip reset.
1211 */
1212 msleep(500);
1213err:
1214 kfree(data);
1215 return;
1216}
1217
1218/**
1219 * rsi_disconnect() - This function performs the reverse of the probe function.
1220 * @pfunction: Pointer to the sdio_func structure.
1221 *
1222 * Return: void.
1223 */
1224static void rsi_disconnect(struct sdio_func *pfunction)
1225{
1226 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1227 struct rsi_91x_sdiodev *dev;
1228
1229 if (!adapter)
1230 return;
1231
1232 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1233
1234 rsi_kill_thread(&dev->rx_thread);
1235 sdio_claim_host(pfunction);
1236 sdio_release_irq(pfunction);
1237 sdio_release_host(pfunction);
1238 mdelay(10);
1239
1240 rsi_mac80211_detach(adapter);
1241 mdelay(10);
1242
1243 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1244 adapter->priv->bt_adapter) {
1245 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1246 adapter->priv->bt_adapter = NULL;
1247 }
1248
1249 /* Reset Chip */
1250 rsi_reset_chip(adapter);
1251
1252 /* Resetting to take care of the case, where-in driver is re-loaded */
1253 sdio_claim_host(pfunction);
1254 rsi_reset_card(pfunction);
1255 sdio_disable_func(pfunction);
1256 sdio_release_host(pfunction);
1257 dev->write_fail = 2;
1258 rsi_91x_deinit(adapter);
1259 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n");
1260
1261}
1262
1263#ifdef CONFIG_PM
1264static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter)
1265{
1266 struct rsi_91x_sdiodev *dev =
1267 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1268 struct sdio_func *func = dev->pfunction;
1269 int ret;
1270
1271 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1272 if (ret)
1273 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret);
1274
1275 return ret;
1276}
1277
1278static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc)
1279{
1280 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1281 u8 isr_status = 0, data = 0;
1282 int ret;
1283 unsigned long t1;
1284
1285 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared..");
1286 t1 = jiffies;
1287 do {
1288 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER,
1289 &isr_status);
1290 rsi_dbg(INFO_ZONE, ".");
1291 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20));
1292 rsi_dbg(INFO_ZONE, "Interrupts cleared\n");
1293
1294 sdio_claim_host(pfunc);
1295 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1296 if (ret < 0) {
1297 rsi_dbg(ERR_ZONE,
1298 "%s: Failed to read int enable register\n",
1299 __func__);
1300 goto done;
1301 }
1302
1303 data &= RSI_INT_ENABLE_MASK;
1304 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1305 if (ret < 0) {
1306 rsi_dbg(ERR_ZONE,
1307 "%s: Failed to write to int enable register\n",
1308 __func__);
1309 goto done;
1310 }
1311 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1312 if (ret < 0) {
1313 rsi_dbg(ERR_ZONE,
1314 "%s: Failed to read int enable register\n",
1315 __func__);
1316 goto done;
1317 }
1318 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1319
1320done:
1321 sdio_release_host(pfunc);
1322 return ret;
1323}
1324
1325static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc)
1326{
1327 u8 data;
1328 int ret;
1329 struct rsi_hw *adapter = sdio_get_drvdata(pfunc);
1330 struct rsi_common *common = adapter->priv;
1331
1332 sdio_claim_host(pfunc);
1333 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1334 if (ret < 0) {
1335 rsi_dbg(ERR_ZONE,
1336 "%s: Failed to read int enable register\n", __func__);
1337 goto done;
1338 }
1339
1340 data |= ~RSI_INT_ENABLE_MASK & 0xff;
1341
1342 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data);
1343 if (ret < 0) {
1344 rsi_dbg(ERR_ZONE,
1345 "%s: Failed to write to int enable register\n",
1346 __func__);
1347 goto done;
1348 }
1349
1350 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1351 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1352 rsi_dbg(ERR_ZONE,
1353 "##### Device can not wake up through WLAN\n");
1354
1355 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data);
1356 if (ret < 0) {
1357 rsi_dbg(ERR_ZONE,
1358 "%s: Failed to read int enable register\n", __func__);
1359 goto done;
1360 }
1361 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data);
1362
1363done:
1364 sdio_release_host(pfunc);
1365 return ret;
1366}
1367
1368static int rsi_suspend(struct device *dev)
1369{
1370 int ret;
1371 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1372 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1373 struct rsi_common *common;
1374
1375 if (!adapter) {
1376 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1377 return -ENODEV;
1378 }
1379 common = adapter->priv;
1380 rsi_sdio_disable_interrupts(pfunction);
1381
1382 ret = rsi_set_sdio_pm_caps(adapter);
1383 if (ret)
1384 rsi_dbg(INFO_ZONE,
1385 "Setting power management caps failed\n");
1386 common->fsm_state = FSM_CARD_NOT_READY;
1387
1388 return 0;
1389}
1390
1391static int rsi_resume(struct device *dev)
1392{
1393 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1394 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1395 struct rsi_common *common = adapter->priv;
1396
1397 common->fsm_state = FSM_MAC_INIT_DONE;
1398 rsi_sdio_enable_interrupts(pfunction);
1399
1400 return 0;
1401}
1402
1403static int rsi_freeze(struct device *dev)
1404{
1405 int ret;
1406 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1407 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1408 struct rsi_common *common;
1409 struct rsi_91x_sdiodev *sdev;
1410
1411 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n");
1412
1413 if (!adapter) {
1414 rsi_dbg(ERR_ZONE, "Device is not ready\n");
1415 return -ENODEV;
1416 }
1417 common = adapter->priv;
1418 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1419
1420 if ((common->wow_flags & RSI_WOW_ENABLED) &&
1421 (common->wow_flags & RSI_WOW_NO_CONNECTION))
1422 rsi_dbg(ERR_ZONE,
1423 "##### Device can not wake up through WLAN\n");
1424
1425 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 &&
1426 common->bt_adapter) {
1427 rsi_bt_ops.detach(common->bt_adapter);
1428 common->bt_adapter = NULL;
1429 }
1430
1431 ret = rsi_sdio_disable_interrupts(pfunction);
1432
1433 if (sdev->write_fail)
1434 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1435
1436 ret = rsi_set_sdio_pm_caps(adapter);
1437 if (ret)
1438 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1439
1440 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n");
1441
1442 return 0;
1443}
1444
1445static int rsi_thaw(struct device *dev)
1446{
1447 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1448 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1449 struct rsi_common *common = adapter->priv;
1450
1451 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n");
1452
1453 common->hibernate_resume = true;
1454 common->fsm_state = FSM_CARD_NOT_READY;
1455 common->iface_down = true;
1456
1457 rsi_sdio_enable_interrupts(pfunction);
1458
1459 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n");
1460
1461 return 0;
1462}
1463
1464static void rsi_shutdown(struct device *dev)
1465{
1466 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1467 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1468 struct rsi_91x_sdiodev *sdev =
1469 (struct rsi_91x_sdiodev *)adapter->rsi_dev;
1470 struct ieee80211_hw *hw = adapter->hw;
1471
1472 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n");
1473
1474 if (hw) {
1475 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config;
1476
1477 if (rsi_config_wowlan(adapter, wowlan))
1478 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n");
1479 }
1480
1481 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 &&
1482 adapter->priv->bt_adapter) {
1483 rsi_bt_ops.detach(adapter->priv->bt_adapter);
1484 adapter->priv->bt_adapter = NULL;
1485 }
1486
1487 rsi_sdio_disable_interrupts(sdev->pfunction);
1488
1489 if (sdev->write_fail)
1490 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n");
1491
1492 if (rsi_set_sdio_pm_caps(adapter))
1493 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n");
1494
1495 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n");
1496}
1497
1498static int rsi_restore(struct device *dev)
1499{
1500 struct sdio_func *pfunction = dev_to_sdio_func(dev);
1501 struct rsi_hw *adapter = sdio_get_drvdata(pfunction);
1502 struct rsi_common *common = adapter->priv;
1503
1504 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n");
1505 common->hibernate_resume = true;
1506 common->fsm_state = FSM_FW_NOT_LOADED;
1507 common->iface_down = true;
1508
1509 adapter->sc_nvifs = 0;
1510 adapter->ps_state = PS_NONE;
1511
1512 common->wow_flags = 0;
1513 common->iface_down = false;
1514
1515 rsi_dbg(INFO_ZONE, "RSI module restored\n");
1516
1517 return 0;
1518}
1519static const struct dev_pm_ops rsi_pm_ops = {
1520 .suspend = rsi_suspend,
1521 .resume = rsi_resume,
1522 .freeze = rsi_freeze,
1523 .thaw = rsi_thaw,
1524 .restore = rsi_restore,
1525};
1526#endif
1527
1528static const struct sdio_device_id rsi_dev_table[] = {
1529 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) },
1530 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) },
1531 { /* Blank */},
1532};
1533
1534static struct sdio_driver rsi_driver = {
1535 .name = "RSI-SDIO WLAN",
1536 .probe = rsi_probe,
1537 .remove = rsi_disconnect,
1538 .id_table = rsi_dev_table,
1539#ifdef CONFIG_PM
1540 .drv = {
1541 .pm = &rsi_pm_ops,
1542 .shutdown = rsi_shutdown,
1543 }
1544#endif
1545};
1546
1547/**
1548 * rsi_module_init() - This function registers the sdio module.
1549 * @void: Void.
1550 *
1551 * Return: 0 on success.
1552 */
1553static int rsi_module_init(void)
1554{
1555 int ret;
1556
1557 ret = sdio_register_driver(&rsi_driver);
1558 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__);
1559 return ret;
1560}
1561
1562/**
1563 * rsi_module_exit() - This function unregisters the sdio module.
1564 * @void: Void.
1565 *
1566 * Return: None.
1567 */
1568static void rsi_module_exit(void)
1569{
1570 sdio_unregister_driver(&rsi_driver);
1571 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__);
1572}
1573
1574module_init(rsi_module_init);
1575module_exit(rsi_module_exit);
1576
1577MODULE_AUTHOR("Redpine Signals Inc");
1578MODULE_DESCRIPTION("Common SDIO layer for RSI drivers");
1579MODULE_SUPPORTED_DEVICE("RSI-91x");
1580MODULE_DEVICE_TABLE(sdio, rsi_dev_table);
1581MODULE_FIRMWARE(FIRMWARE_RSI9113);
1582MODULE_VERSION("0.1");
1583MODULE_LICENSE("Dual BSD/GPL");