1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Driver for Realtek PCI-Express card reader
4 *
5 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
6 *
7 * Author:
8 * Wei WANG (wei_wang@realsil.com.cn)
9 * Micky Ching (micky_ching@realsil.com.cn)
10 */
11
12 #include <linux/blkdev.h>
13 #include <linux/kthread.h>
14 #include <linux/sched.h>
15 #include <linux/workqueue.h>
16 #include <linux/kernel.h>
17
18 #include "rtsx.h"
19 #include "sd.h"
20 #include "xd.h"
21 #include "ms.h"
22
do_remaining_work(struct rtsx_chip * chip)23 void do_remaining_work(struct rtsx_chip *chip)
24 {
25 struct sd_info *sd_card = &chip->sd_card;
26 #ifdef XD_DELAY_WRITE
27 struct xd_info *xd_card = &chip->xd_card;
28 #endif
29 struct ms_info *ms_card = &chip->ms_card;
30
31 if (chip->card_ready & SD_CARD) {
32 if (sd_card->seq_mode) {
33 rtsx_set_stat(chip, RTSX_STAT_RUN);
34 sd_card->cleanup_counter++;
35 } else {
36 sd_card->cleanup_counter = 0;
37 }
38 }
39
40 #ifdef XD_DELAY_WRITE
41 if (chip->card_ready & XD_CARD) {
42 if (xd_card->delay_write.delay_write_flag) {
43 rtsx_set_stat(chip, RTSX_STAT_RUN);
44 xd_card->cleanup_counter++;
45 } else {
46 xd_card->cleanup_counter = 0;
47 }
48 }
49 #endif
50
51 if (chip->card_ready & MS_CARD) {
52 if (CHK_MSPRO(ms_card)) {
53 if (ms_card->seq_mode) {
54 rtsx_set_stat(chip, RTSX_STAT_RUN);
55 ms_card->cleanup_counter++;
56 } else {
57 ms_card->cleanup_counter = 0;
58 }
59 } else {
60 #ifdef MS_DELAY_WRITE
61 if (ms_card->delay_write.delay_write_flag) {
62 rtsx_set_stat(chip, RTSX_STAT_RUN);
63 ms_card->cleanup_counter++;
64 } else {
65 ms_card->cleanup_counter = 0;
66 }
67 #endif
68 }
69 }
70
71 if (sd_card->cleanup_counter > POLLING_WAIT_CNT)
72 sd_cleanup_work(chip);
73
74 if (xd_card->cleanup_counter > POLLING_WAIT_CNT)
75 xd_cleanup_work(chip);
76
77 if (ms_card->cleanup_counter > POLLING_WAIT_CNT)
78 ms_cleanup_work(chip);
79 }
80
try_to_switch_sdio_ctrl(struct rtsx_chip * chip)81 void try_to_switch_sdio_ctrl(struct rtsx_chip *chip)
82 {
83 u8 reg1 = 0, reg2 = 0;
84
85 rtsx_read_register(chip, 0xFF34, ®1);
86 rtsx_read_register(chip, 0xFF38, ®2);
87 dev_dbg(rtsx_dev(chip), "reg 0xFF34: 0x%x, reg 0xFF38: 0x%x\n",
88 reg1, reg2);
89 if ((reg1 & 0xC0) && (reg2 & 0xC0)) {
90 chip->sd_int = 1;
91 rtsx_write_register(chip, SDIO_CTRL, 0xFF,
92 SDIO_BUS_CTRL | SDIO_CD_CTRL);
93 rtsx_write_register(chip, PWR_GATE_CTRL,
94 LDO3318_PWR_MASK, LDO_ON);
95 }
96 }
97
98 #ifdef SUPPORT_SDIO_ASPM
dynamic_configure_sdio_aspm(struct rtsx_chip * chip)99 void dynamic_configure_sdio_aspm(struct rtsx_chip *chip)
100 {
101 u8 buf[12], reg;
102 int i;
103
104 for (i = 0; i < 12; i++)
105 rtsx_read_register(chip, 0xFF08 + i, &buf[i]);
106 rtsx_read_register(chip, 0xFF25, ®);
107 if ((memcmp(buf, chip->sdio_raw_data, 12) != 0) || (reg & 0x03)) {
108 chip->sdio_counter = 0;
109 chip->sdio_idle = 0;
110 } else {
111 if (!chip->sdio_idle) {
112 chip->sdio_counter++;
113 if (chip->sdio_counter >= SDIO_IDLE_COUNT) {
114 chip->sdio_counter = 0;
115 chip->sdio_idle = 1;
116 }
117 }
118 }
119 memcpy(chip->sdio_raw_data, buf, 12);
120
121 if (chip->sdio_idle) {
122 if (!chip->sdio_aspm) {
123 dev_dbg(rtsx_dev(chip), "SDIO enter ASPM!\n");
124 rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFC,
125 0x30 | (chip->aspm_level[1] << 2));
126 chip->sdio_aspm = 1;
127 }
128 } else {
129 if (chip->sdio_aspm) {
130 dev_dbg(rtsx_dev(chip), "SDIO exit ASPM!\n");
131 rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFC, 0x30);
132 chip->sdio_aspm = 0;
133 }
134 }
135 }
136 #endif
137
do_reset_sd_card(struct rtsx_chip * chip)138 void do_reset_sd_card(struct rtsx_chip *chip)
139 {
140 int retval;
141
142 dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
143 chip->sd_reset_counter, chip->card2lun[SD_CARD]);
144
145 if (chip->card2lun[SD_CARD] >= MAX_ALLOWED_LUN_CNT) {
146 clear_bit(SD_NR, &chip->need_reset);
147 chip->sd_reset_counter = 0;
148 chip->sd_show_cnt = 0;
149 return;
150 }
151
152 chip->rw_fail_cnt[chip->card2lun[SD_CARD]] = 0;
153
154 rtsx_set_stat(chip, RTSX_STAT_RUN);
155 rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
156
157 retval = reset_sd_card(chip);
158 if (chip->need_release & SD_CARD)
159 return;
160 if (retval == STATUS_SUCCESS) {
161 clear_bit(SD_NR, &chip->need_reset);
162 chip->sd_reset_counter = 0;
163 chip->sd_show_cnt = 0;
164 chip->card_ready |= SD_CARD;
165 chip->card_fail &= ~SD_CARD;
166 chip->rw_card[chip->card2lun[SD_CARD]] = sd_rw;
167 } else {
168 if (chip->sd_io || chip->sd_reset_counter >= MAX_RESET_CNT) {
169 clear_bit(SD_NR, &chip->need_reset);
170 chip->sd_reset_counter = 0;
171 chip->sd_show_cnt = 0;
172 } else {
173 chip->sd_reset_counter++;
174 }
175 chip->card_ready &= ~SD_CARD;
176 chip->card_fail |= SD_CARD;
177 chip->capacity[chip->card2lun[SD_CARD]] = 0;
178 chip->rw_card[chip->card2lun[SD_CARD]] = NULL;
179
180 rtsx_write_register(chip, CARD_OE, SD_OUTPUT_EN, 0);
181 if (!chip->ft2_fast_mode)
182 card_power_off(chip, SD_CARD);
183 if (chip->sd_io) {
184 chip->sd_int = 0;
185 try_to_switch_sdio_ctrl(chip);
186 } else {
187 disable_card_clock(chip, SD_CARD);
188 }
189 }
190 }
191
do_reset_xd_card(struct rtsx_chip * chip)192 void do_reset_xd_card(struct rtsx_chip *chip)
193 {
194 int retval;
195
196 dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
197 chip->xd_reset_counter, chip->card2lun[XD_CARD]);
198
199 if (chip->card2lun[XD_CARD] >= MAX_ALLOWED_LUN_CNT) {
200 clear_bit(XD_NR, &chip->need_reset);
201 chip->xd_reset_counter = 0;
202 chip->xd_show_cnt = 0;
203 return;
204 }
205
206 chip->rw_fail_cnt[chip->card2lun[XD_CARD]] = 0;
207
208 rtsx_set_stat(chip, RTSX_STAT_RUN);
209 rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
210
211 retval = reset_xd_card(chip);
212 if (chip->need_release & XD_CARD)
213 return;
214 if (retval == STATUS_SUCCESS) {
215 clear_bit(XD_NR, &chip->need_reset);
216 chip->xd_reset_counter = 0;
217 chip->card_ready |= XD_CARD;
218 chip->card_fail &= ~XD_CARD;
219 chip->rw_card[chip->card2lun[XD_CARD]] = xd_rw;
220 } else {
221 if (chip->xd_reset_counter >= MAX_RESET_CNT) {
222 clear_bit(XD_NR, &chip->need_reset);
223 chip->xd_reset_counter = 0;
224 chip->xd_show_cnt = 0;
225 } else {
226 chip->xd_reset_counter++;
227 }
228 chip->card_ready &= ~XD_CARD;
229 chip->card_fail |= XD_CARD;
230 chip->capacity[chip->card2lun[XD_CARD]] = 0;
231 chip->rw_card[chip->card2lun[XD_CARD]] = NULL;
232
233 rtsx_write_register(chip, CARD_OE, XD_OUTPUT_EN, 0);
234 if (!chip->ft2_fast_mode)
235 card_power_off(chip, XD_CARD);
236 disable_card_clock(chip, XD_CARD);
237 }
238 }
239
do_reset_ms_card(struct rtsx_chip * chip)240 void do_reset_ms_card(struct rtsx_chip *chip)
241 {
242 int retval;
243
244 dev_dbg(rtsx_dev(chip), "%s: %d, card2lun = 0x%x\n", __func__,
245 chip->ms_reset_counter, chip->card2lun[MS_CARD]);
246
247 if (chip->card2lun[MS_CARD] >= MAX_ALLOWED_LUN_CNT) {
248 clear_bit(MS_NR, &chip->need_reset);
249 chip->ms_reset_counter = 0;
250 chip->ms_show_cnt = 0;
251 return;
252 }
253
254 chip->rw_fail_cnt[chip->card2lun[MS_CARD]] = 0;
255
256 rtsx_set_stat(chip, RTSX_STAT_RUN);
257 rtsx_write_register(chip, SDIO_CTRL, 0xFF, 0);
258
259 retval = reset_ms_card(chip);
260 if (chip->need_release & MS_CARD)
261 return;
262 if (retval == STATUS_SUCCESS) {
263 clear_bit(MS_NR, &chip->need_reset);
264 chip->ms_reset_counter = 0;
265 chip->card_ready |= MS_CARD;
266 chip->card_fail &= ~MS_CARD;
267 chip->rw_card[chip->card2lun[MS_CARD]] = ms_rw;
268 } else {
269 if (chip->ms_reset_counter >= MAX_RESET_CNT) {
270 clear_bit(MS_NR, &chip->need_reset);
271 chip->ms_reset_counter = 0;
272 chip->ms_show_cnt = 0;
273 } else {
274 chip->ms_reset_counter++;
275 }
276 chip->card_ready &= ~MS_CARD;
277 chip->card_fail |= MS_CARD;
278 chip->capacity[chip->card2lun[MS_CARD]] = 0;
279 chip->rw_card[chip->card2lun[MS_CARD]] = NULL;
280
281 rtsx_write_register(chip, CARD_OE, MS_OUTPUT_EN, 0);
282 if (!chip->ft2_fast_mode)
283 card_power_off(chip, MS_CARD);
284 disable_card_clock(chip, MS_CARD);
285 }
286 }
287
release_sdio(struct rtsx_chip * chip)288 static void release_sdio(struct rtsx_chip *chip)
289 {
290 if (chip->sd_io) {
291 rtsx_write_register(chip, CARD_STOP, SD_STOP | SD_CLR_ERR,
292 SD_STOP | SD_CLR_ERR);
293
294 if (chip->chip_insert_with_sdio) {
295 chip->chip_insert_with_sdio = 0;
296
297 if (CHECK_PID(chip, 0x5288))
298 rtsx_write_register(chip, 0xFE5A, 0x08, 0x00);
299 else
300 rtsx_write_register(chip, 0xFE70, 0x80, 0x00);
301 }
302
303 rtsx_write_register(chip, SDIO_CTRL, SDIO_CD_CTRL, 0);
304 chip->sd_io = 0;
305 }
306 }
307
rtsx_power_off_card(struct rtsx_chip * chip)308 void rtsx_power_off_card(struct rtsx_chip *chip)
309 {
310 if ((chip->card_ready & SD_CARD) || chip->sd_io) {
311 sd_cleanup_work(chip);
312 sd_power_off_card3v3(chip);
313 }
314
315 if (chip->card_ready & XD_CARD) {
316 xd_cleanup_work(chip);
317 xd_power_off_card3v3(chip);
318 }
319
320 if (chip->card_ready & MS_CARD) {
321 ms_cleanup_work(chip);
322 ms_power_off_card3v3(chip);
323 }
324 }
325
rtsx_release_cards(struct rtsx_chip * chip)326 void rtsx_release_cards(struct rtsx_chip *chip)
327 {
328 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
329
330 if ((chip->card_ready & SD_CARD) || chip->sd_io) {
331 if (chip->int_reg & SD_EXIST)
332 sd_cleanup_work(chip);
333 release_sd_card(chip);
334 }
335
336 if (chip->card_ready & XD_CARD) {
337 if (chip->int_reg & XD_EXIST)
338 xd_cleanup_work(chip);
339 release_xd_card(chip);
340 }
341
342 if (chip->card_ready & MS_CARD) {
343 if (chip->int_reg & MS_EXIST)
344 ms_cleanup_work(chip);
345 release_ms_card(chip);
346 }
347 }
348
rtsx_reset_cards(struct rtsx_chip * chip)349 void rtsx_reset_cards(struct rtsx_chip *chip)
350 {
351 if (!chip->need_reset)
352 return;
353
354 rtsx_set_stat(chip, RTSX_STAT_RUN);
355
356 rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
357
358 rtsx_disable_aspm(chip);
359
360 if ((chip->need_reset & SD_CARD) && chip->chip_insert_with_sdio)
361 clear_bit(SD_NR, &chip->need_reset);
362
363 if (chip->need_reset & XD_CARD) {
364 chip->card_exist |= XD_CARD;
365
366 if (chip->xd_show_cnt >= MAX_SHOW_CNT)
367 do_reset_xd_card(chip);
368 else
369 chip->xd_show_cnt++;
370 }
371 if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN)) {
372 if (chip->card_exist & XD_CARD) {
373 clear_bit(SD_NR, &chip->need_reset);
374 clear_bit(MS_NR, &chip->need_reset);
375 }
376 }
377 if (chip->need_reset & SD_CARD) {
378 chip->card_exist |= SD_CARD;
379
380 if (chip->sd_show_cnt >= MAX_SHOW_CNT) {
381 rtsx_write_register(chip, RBCTL, RB_FLUSH, RB_FLUSH);
382 do_reset_sd_card(chip);
383 } else {
384 chip->sd_show_cnt++;
385 }
386 }
387 if (chip->need_reset & MS_CARD) {
388 chip->card_exist |= MS_CARD;
389
390 if (chip->ms_show_cnt >= MAX_SHOW_CNT)
391 do_reset_ms_card(chip);
392 else
393 chip->ms_show_cnt++;
394 }
395 }
396
rtsx_reinit_cards(struct rtsx_chip * chip,int reset_chip)397 void rtsx_reinit_cards(struct rtsx_chip *chip, int reset_chip)
398 {
399 rtsx_set_stat(chip, RTSX_STAT_RUN);
400
401 rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
402
403 if (reset_chip)
404 rtsx_reset_chip(chip);
405
406 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
407
408 if ((chip->int_reg & SD_EXIST) && (chip->need_reinit & SD_CARD)) {
409 release_sdio(chip);
410 release_sd_card(chip);
411
412 wait_timeout(100);
413
414 chip->card_exist |= SD_CARD;
415 do_reset_sd_card(chip);
416 }
417
418 if ((chip->int_reg & XD_EXIST) && (chip->need_reinit & XD_CARD)) {
419 release_xd_card(chip);
420
421 wait_timeout(100);
422
423 chip->card_exist |= XD_CARD;
424 do_reset_xd_card(chip);
425 }
426
427 if ((chip->int_reg & MS_EXIST) && (chip->need_reinit & MS_CARD)) {
428 release_ms_card(chip);
429
430 wait_timeout(100);
431
432 chip->card_exist |= MS_CARD;
433 do_reset_ms_card(chip);
434 }
435
436 chip->need_reinit = 0;
437 }
438
439 #ifdef DISABLE_CARD_INT
card_cd_debounce(struct rtsx_chip * chip,unsigned long * need_reset,unsigned long * need_release)440 void card_cd_debounce(struct rtsx_chip *chip, unsigned long *need_reset,
441 unsigned long *need_release)
442 {
443 u8 release_map = 0, reset_map = 0;
444
445 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
446
447 if (chip->card_exist) {
448 if (chip->card_exist & XD_CARD) {
449 if (!(chip->int_reg & XD_EXIST))
450 release_map |= XD_CARD;
451 } else if (chip->card_exist & SD_CARD) {
452 if (!(chip->int_reg & SD_EXIST))
453 release_map |= SD_CARD;
454 } else if (chip->card_exist & MS_CARD) {
455 if (!(chip->int_reg & MS_EXIST))
456 release_map |= MS_CARD;
457 }
458 } else {
459 if (chip->int_reg & XD_EXIST)
460 reset_map |= XD_CARD;
461 else if (chip->int_reg & SD_EXIST)
462 reset_map |= SD_CARD;
463 else if (chip->int_reg & MS_EXIST)
464 reset_map |= MS_CARD;
465 }
466
467 if (reset_map) {
468 int xd_cnt = 0, sd_cnt = 0, ms_cnt = 0;
469 int i;
470
471 for (i = 0; i < (DEBOUNCE_CNT); i++) {
472 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
473
474 if (chip->int_reg & XD_EXIST)
475 xd_cnt++;
476 else
477 xd_cnt = 0;
478
479 if (chip->int_reg & SD_EXIST)
480 sd_cnt++;
481 else
482 sd_cnt = 0;
483
484 if (chip->int_reg & MS_EXIST)
485 ms_cnt++;
486 else
487 ms_cnt = 0;
488
489 wait_timeout(30);
490 }
491
492 reset_map = 0;
493 if (!(chip->card_exist & XD_CARD) &&
494 (xd_cnt > (DEBOUNCE_CNT - 1)))
495 reset_map |= XD_CARD;
496 if (!(chip->card_exist & SD_CARD) &&
497 (sd_cnt > (DEBOUNCE_CNT - 1)))
498 reset_map |= SD_CARD;
499 if (!(chip->card_exist & MS_CARD) &&
500 (ms_cnt > (DEBOUNCE_CNT - 1)))
501 reset_map |= MS_CARD;
502 }
503
504 if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN))
505 rtsx_write_register(chip, HOST_SLEEP_STATE, 0xC0, 0x00);
506
507 if (need_reset)
508 *need_reset = reset_map;
509 if (need_release)
510 *need_release = release_map;
511 }
512 #endif
513
rtsx_init_cards(struct rtsx_chip * chip)514 void rtsx_init_cards(struct rtsx_chip *chip)
515 {
516 if (RTSX_TST_DELINK(chip) && (rtsx_get_stat(chip) != RTSX_STAT_SS)) {
517 dev_dbg(rtsx_dev(chip), "Reset chip in polling thread!\n");
518 rtsx_reset_chip(chip);
519 RTSX_CLR_DELINK(chip);
520 }
521
522 #ifdef DISABLE_CARD_INT
523 card_cd_debounce(chip, &chip->need_reset, &chip->need_release);
524 #endif
525
526 if (chip->need_release) {
527 if (CHECK_PID(chip, 0x5288) && CHECK_BARO_PKG(chip, QFN)) {
528 if (chip->int_reg & XD_EXIST) {
529 clear_bit(SD_NR, &chip->need_release);
530 clear_bit(MS_NR, &chip->need_release);
531 }
532 }
533
534 if (!(chip->card_exist & SD_CARD) && !chip->sd_io)
535 clear_bit(SD_NR, &chip->need_release);
536 if (!(chip->card_exist & XD_CARD))
537 clear_bit(XD_NR, &chip->need_release);
538 if (!(chip->card_exist & MS_CARD))
539 clear_bit(MS_NR, &chip->need_release);
540
541 dev_dbg(rtsx_dev(chip), "chip->need_release = 0x%x\n",
542 (unsigned int)(chip->need_release));
543
544 #ifdef SUPPORT_OCP
545 if (chip->need_release) {
546 if (chip->ocp_stat & (CARD_OC_NOW | CARD_OC_EVER))
547 rtsx_write_register(chip, OCPCLR,
548 CARD_OC_INT_CLR |
549 CARD_OC_CLR,
550 CARD_OC_INT_CLR |
551 CARD_OC_CLR);
552 chip->ocp_stat = 0;
553 }
554 #endif
555 if (chip->need_release) {
556 rtsx_set_stat(chip, RTSX_STAT_RUN);
557 rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
558 }
559
560 if (chip->need_release & SD_CARD) {
561 clear_bit(SD_NR, &chip->need_release);
562 chip->card_exist &= ~SD_CARD;
563 chip->card_ejected &= ~SD_CARD;
564 chip->card_fail &= ~SD_CARD;
565 CLR_BIT(chip->lun_mc, chip->card2lun[SD_CARD]);
566 chip->rw_fail_cnt[chip->card2lun[SD_CARD]] = 0;
567 rtsx_write_register(chip, RBCTL, RB_FLUSH, RB_FLUSH);
568
569 release_sdio(chip);
570 release_sd_card(chip);
571 }
572
573 if (chip->need_release & XD_CARD) {
574 clear_bit(XD_NR, &chip->need_release);
575 chip->card_exist &= ~XD_CARD;
576 chip->card_ejected &= ~XD_CARD;
577 chip->card_fail &= ~XD_CARD;
578 CLR_BIT(chip->lun_mc, chip->card2lun[XD_CARD]);
579 chip->rw_fail_cnt[chip->card2lun[XD_CARD]] = 0;
580
581 release_xd_card(chip);
582
583 if (CHECK_PID(chip, 0x5288) &&
584 CHECK_BARO_PKG(chip, QFN))
585 rtsx_write_register(chip, HOST_SLEEP_STATE,
586 0xC0, 0xC0);
587 }
588
589 if (chip->need_release & MS_CARD) {
590 clear_bit(MS_NR, &chip->need_release);
591 chip->card_exist &= ~MS_CARD;
592 chip->card_ejected &= ~MS_CARD;
593 chip->card_fail &= ~MS_CARD;
594 CLR_BIT(chip->lun_mc, chip->card2lun[MS_CARD]);
595 chip->rw_fail_cnt[chip->card2lun[MS_CARD]] = 0;
596
597 release_ms_card(chip);
598 }
599
600 dev_dbg(rtsx_dev(chip), "chip->card_exist = 0x%x\n",
601 chip->card_exist);
602
603 if (!chip->card_exist)
604 turn_off_led(chip, LED_GPIO);
605 }
606
607 if (chip->need_reset) {
608 dev_dbg(rtsx_dev(chip), "chip->need_reset = 0x%x\n",
609 (unsigned int)(chip->need_reset));
610
611 rtsx_reset_cards(chip);
612 }
613
614 if (chip->need_reinit) {
615 dev_dbg(rtsx_dev(chip), "chip->need_reinit = 0x%x\n",
616 (unsigned int)(chip->need_reinit));
617
618 rtsx_reinit_cards(chip, 0);
619 }
620 }
621
switch_ssc_clock(struct rtsx_chip * chip,int clk)622 int switch_ssc_clock(struct rtsx_chip *chip, int clk)
623 {
624 int retval;
625 u8 n = (u8)(clk - 2), min_n, max_n;
626 u8 mcu_cnt, div, max_div, ssc_depth, ssc_depth_mask;
627 int sd_vpclk_phase_reset = 0;
628
629 if (chip->cur_clk == clk)
630 return STATUS_SUCCESS;
631
632 min_n = 60;
633 max_n = 120;
634 max_div = CLK_DIV_4;
635
636 dev_dbg(rtsx_dev(chip), "Switch SSC clock to %dMHz (cur_clk = %d)\n",
637 clk, chip->cur_clk);
638
639 if (clk <= 2 || n > max_n)
640 return STATUS_FAIL;
641
642 mcu_cnt = (u8)(125 / clk + 3);
643 if (mcu_cnt > 7)
644 mcu_cnt = 7;
645
646 div = CLK_DIV_1;
647 while ((n < min_n) && (div < max_div)) {
648 n = (n + 2) * 2 - 2;
649 div++;
650 }
651 dev_dbg(rtsx_dev(chip), "n = %d, div = %d\n", n, div);
652
653 if (chip->ssc_en) {
654 ssc_depth = 0x01;
655 n -= 2;
656 } else {
657 ssc_depth = 0;
658 }
659
660 ssc_depth_mask = 0x03;
661
662 dev_dbg(rtsx_dev(chip), "ssc_depth = %d\n", ssc_depth);
663
664 rtsx_init_cmd(chip);
665 rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_CTL, CLK_LOW_FREQ, CLK_LOW_FREQ);
666 rtsx_add_cmd(chip, WRITE_REG_CMD, CLK_DIV, 0xFF, (div << 4) | mcu_cnt);
667 rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, 0);
668 rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL2, ssc_depth_mask, ssc_depth);
669 rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_DIV_N_0, 0xFF, n);
670 rtsx_add_cmd(chip, WRITE_REG_CMD, SSC_CTL1, SSC_RSTB, SSC_RSTB);
671 if (sd_vpclk_phase_reset) {
672 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
673 PHASE_NOT_RESET, 0);
674 rtsx_add_cmd(chip, WRITE_REG_CMD, SD_VPCLK0_CTL,
675 PHASE_NOT_RESET, PHASE_NOT_RESET);
676 }
677
678 retval = rtsx_send_cmd(chip, 0, WAIT_TIME);
679 if (retval < 0)
680 return STATUS_ERROR;
681
682 udelay(10);
683 retval = rtsx_write_register(chip, CLK_CTL, CLK_LOW_FREQ, 0);
684 if (retval)
685 return retval;
686
687 chip->cur_clk = clk;
688
689 return STATUS_SUCCESS;
690 }
691
switch_normal_clock(struct rtsx_chip * chip,int clk)692 int switch_normal_clock(struct rtsx_chip *chip, int clk)
693 {
694 int retval;
695 u8 sel, div, mcu_cnt;
696 int sd_vpclk_phase_reset = 0;
697
698 if (chip->cur_clk == clk)
699 return STATUS_SUCCESS;
700
701 switch (clk) {
702 case CLK_20:
703 dev_dbg(rtsx_dev(chip), "Switch clock to 20MHz\n");
704 sel = SSC_80;
705 div = CLK_DIV_4;
706 mcu_cnt = 7;
707 break;
708
709 case CLK_30:
710 dev_dbg(rtsx_dev(chip), "Switch clock to 30MHz\n");
711 sel = SSC_120;
712 div = CLK_DIV_4;
713 mcu_cnt = 7;
714 break;
715
716 case CLK_40:
717 dev_dbg(rtsx_dev(chip), "Switch clock to 40MHz\n");
718 sel = SSC_80;
719 div = CLK_DIV_2;
720 mcu_cnt = 7;
721 break;
722
723 case CLK_50:
724 dev_dbg(rtsx_dev(chip), "Switch clock to 50MHz\n");
725 sel = SSC_100;
726 div = CLK_DIV_2;
727 mcu_cnt = 6;
728 break;
729
730 case CLK_60:
731 dev_dbg(rtsx_dev(chip), "Switch clock to 60MHz\n");
732 sel = SSC_120;
733 div = CLK_DIV_2;
734 mcu_cnt = 6;
735 break;
736
737 case CLK_80:
738 dev_dbg(rtsx_dev(chip), "Switch clock to 80MHz\n");
739 sel = SSC_80;
740 div = CLK_DIV_1;
741 mcu_cnt = 5;
742 break;
743
744 case CLK_100:
745 dev_dbg(rtsx_dev(chip), "Switch clock to 100MHz\n");
746 sel = SSC_100;
747 div = CLK_DIV_1;
748 mcu_cnt = 5;
749 break;
750
751 case CLK_120:
752 dev_dbg(rtsx_dev(chip), "Switch clock to 120MHz\n");
753 sel = SSC_120;
754 div = CLK_DIV_1;
755 mcu_cnt = 5;
756 break;
757
758 case CLK_150:
759 dev_dbg(rtsx_dev(chip), "Switch clock to 150MHz\n");
760 sel = SSC_150;
761 div = CLK_DIV_1;
762 mcu_cnt = 4;
763 break;
764
765 case CLK_200:
766 dev_dbg(rtsx_dev(chip), "Switch clock to 200MHz\n");
767 sel = SSC_200;
768 div = CLK_DIV_1;
769 mcu_cnt = 4;
770 break;
771
772 default:
773 dev_dbg(rtsx_dev(chip), "Try to switch to an illegal clock (%d)\n",
774 clk);
775 return STATUS_FAIL;
776 }
777
778 retval = rtsx_write_register(chip, CLK_CTL, 0xFF, CLK_LOW_FREQ);
779 if (retval)
780 return retval;
781 if (sd_vpclk_phase_reset) {
782 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
783 PHASE_NOT_RESET, 0);
784 if (retval)
785 return retval;
786 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
787 PHASE_NOT_RESET, 0);
788 if (retval)
789 return retval;
790 }
791 retval = rtsx_write_register(chip, CLK_DIV, 0xFF,
792 (div << 4) | mcu_cnt);
793 if (retval)
794 return retval;
795 retval = rtsx_write_register(chip, CLK_SEL, 0xFF, sel);
796 if (retval)
797 return retval;
798
799 if (sd_vpclk_phase_reset) {
800 udelay(200);
801 retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
802 PHASE_NOT_RESET, PHASE_NOT_RESET);
803 if (retval)
804 return retval;
805 retval = rtsx_write_register(chip, SD_VPCLK1_CTL,
806 PHASE_NOT_RESET, PHASE_NOT_RESET);
807 if (retval)
808 return retval;
809 udelay(200);
810 }
811 retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
812 if (retval)
813 return retval;
814
815 chip->cur_clk = clk;
816
817 return STATUS_SUCCESS;
818 }
819
trans_dma_enable(enum dma_data_direction dir,struct rtsx_chip * chip,u32 byte_cnt,u8 pack_size)820 void trans_dma_enable(enum dma_data_direction dir, struct rtsx_chip *chip,
821 u32 byte_cnt, u8 pack_size)
822 {
823 if (pack_size > DMA_1024)
824 pack_size = DMA_512;
825
826 rtsx_add_cmd(chip, WRITE_REG_CMD, IRQSTAT0, DMA_DONE_INT, DMA_DONE_INT);
827
828 rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(byte_cnt >> 24));
829 rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(byte_cnt >> 16));
830 rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(byte_cnt >> 8));
831 rtsx_add_cmd(chip, WRITE_REG_CMD, DMATC0, 0xFF, (u8)byte_cnt);
832
833 if (dir == DMA_FROM_DEVICE) {
834 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
835 0x03 | DMA_PACK_SIZE_MASK,
836 DMA_DIR_FROM_CARD | DMA_EN | pack_size);
837 } else {
838 rtsx_add_cmd(chip, WRITE_REG_CMD, DMACTL,
839 0x03 | DMA_PACK_SIZE_MASK,
840 DMA_DIR_TO_CARD | DMA_EN | pack_size);
841 }
842
843 rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01, RING_BUFFER);
844 }
845
enable_card_clock(struct rtsx_chip * chip,u8 card)846 int enable_card_clock(struct rtsx_chip *chip, u8 card)
847 {
848 int retval;
849 u8 clk_en = 0;
850
851 if (card & XD_CARD)
852 clk_en |= XD_CLK_EN;
853 if (card & SD_CARD)
854 clk_en |= SD_CLK_EN;
855 if (card & MS_CARD)
856 clk_en |= MS_CLK_EN;
857
858 retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, clk_en);
859 if (retval)
860 return retval;
861
862 return STATUS_SUCCESS;
863 }
864
disable_card_clock(struct rtsx_chip * chip,u8 card)865 int disable_card_clock(struct rtsx_chip *chip, u8 card)
866 {
867 int retval;
868 u8 clk_en = 0;
869
870 if (card & XD_CARD)
871 clk_en |= XD_CLK_EN;
872 if (card & SD_CARD)
873 clk_en |= SD_CLK_EN;
874 if (card & MS_CARD)
875 clk_en |= MS_CLK_EN;
876
877 retval = rtsx_write_register(chip, CARD_CLK_EN, clk_en, 0);
878 if (retval)
879 return retval;
880
881 return STATUS_SUCCESS;
882 }
883
card_power_on(struct rtsx_chip * chip,u8 card)884 int card_power_on(struct rtsx_chip *chip, u8 card)
885 {
886 int retval;
887 u8 mask, val1, val2;
888
889 if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && card == MS_CARD) {
890 mask = MS_POWER_MASK;
891 val1 = MS_PARTIAL_POWER_ON;
892 val2 = MS_POWER_ON;
893 } else {
894 mask = SD_POWER_MASK;
895 val1 = SD_PARTIAL_POWER_ON;
896 val2 = SD_POWER_ON;
897 }
898
899 rtsx_init_cmd(chip);
900 rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val1);
901
902 retval = rtsx_send_cmd(chip, 0, 100);
903 if (retval != STATUS_SUCCESS)
904 return STATUS_FAIL;
905
906 udelay(chip->pmos_pwr_on_interval);
907
908 rtsx_init_cmd(chip);
909 rtsx_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, mask, val2);
910
911 retval = rtsx_send_cmd(chip, 0, 100);
912 if (retval != STATUS_SUCCESS)
913 return STATUS_FAIL;
914
915 return STATUS_SUCCESS;
916 }
917
card_power_off(struct rtsx_chip * chip,u8 card)918 int card_power_off(struct rtsx_chip *chip, u8 card)
919 {
920 int retval;
921 u8 mask, val;
922
923 if (CHECK_LUN_MODE(chip, SD_MS_2LUN) && card == MS_CARD) {
924 mask = MS_POWER_MASK;
925 val = MS_POWER_OFF;
926 } else {
927 mask = SD_POWER_MASK;
928 val = SD_POWER_OFF;
929 }
930
931 retval = rtsx_write_register(chip, CARD_PWR_CTL, mask, val);
932 if (retval)
933 return retval;
934
935 return STATUS_SUCCESS;
936 }
937
card_rw(struct scsi_cmnd * srb,struct rtsx_chip * chip,u32 sec_addr,u16 sec_cnt)938 int card_rw(struct scsi_cmnd *srb, struct rtsx_chip *chip,
939 u32 sec_addr, u16 sec_cnt)
940 {
941 int retval;
942 unsigned int lun = SCSI_LUN(srb);
943 int i;
944
945 if (!chip->rw_card[lun])
946 return STATUS_FAIL;
947
948 for (i = 0; i < 3; i++) {
949 chip->rw_need_retry = 0;
950
951 retval = chip->rw_card[lun](srb, chip, sec_addr, sec_cnt);
952 if (retval != STATUS_SUCCESS) {
953 if (rtsx_check_chip_exist(chip) != STATUS_SUCCESS) {
954 rtsx_release_chip(chip);
955 return STATUS_FAIL;
956 }
957 if (detect_card_cd(chip, chip->cur_card) !=
958 STATUS_SUCCESS) {
959 return STATUS_FAIL;
960 }
961
962 if (!chip->rw_need_retry) {
963 dev_dbg(rtsx_dev(chip), "RW fail, but no need to retry\n");
964 break;
965 }
966 } else {
967 chip->rw_need_retry = 0;
968 break;
969 }
970
971 dev_dbg(rtsx_dev(chip), "Retry RW, (i = %d)\n", i);
972 }
973
974 return retval;
975 }
976
card_share_mode(struct rtsx_chip * chip,int card)977 int card_share_mode(struct rtsx_chip *chip, int card)
978 {
979 int retval;
980 u8 mask, value;
981
982 if (CHECK_PID(chip, 0x5208)) {
983 mask = CARD_SHARE_MASK;
984 if (card == SD_CARD)
985 value = CARD_SHARE_48_SD;
986 else if (card == MS_CARD)
987 value = CARD_SHARE_48_MS;
988 else if (card == XD_CARD)
989 value = CARD_SHARE_48_XD;
990 else
991 return STATUS_FAIL;
992
993 } else if (CHECK_PID(chip, 0x5288)) {
994 mask = 0x03;
995 if (card == SD_CARD)
996 value = CARD_SHARE_BAROSSA_SD;
997 else if (card == MS_CARD)
998 value = CARD_SHARE_BAROSSA_MS;
999 else if (card == XD_CARD)
1000 value = CARD_SHARE_BAROSSA_XD;
1001 else
1002 return STATUS_FAIL;
1003
1004 } else {
1005 return STATUS_FAIL;
1006 }
1007
1008 retval = rtsx_write_register(chip, CARD_SHARE_MODE, mask, value);
1009 if (retval)
1010 return retval;
1011
1012 return STATUS_SUCCESS;
1013 }
1014
select_card(struct rtsx_chip * chip,int card)1015 int select_card(struct rtsx_chip *chip, int card)
1016 {
1017 int retval;
1018
1019 if (chip->cur_card != card) {
1020 u8 mod;
1021
1022 if (card == SD_CARD)
1023 mod = SD_MOD_SEL;
1024 else if (card == MS_CARD)
1025 mod = MS_MOD_SEL;
1026 else if (card == XD_CARD)
1027 mod = XD_MOD_SEL;
1028 else if (card == SPI_CARD)
1029 mod = SPI_MOD_SEL;
1030 else
1031 return STATUS_FAIL;
1032
1033 retval = rtsx_write_register(chip, CARD_SELECT, 0x07, mod);
1034 if (retval)
1035 return retval;
1036 chip->cur_card = card;
1037
1038 retval = card_share_mode(chip, card);
1039 if (retval != STATUS_SUCCESS)
1040 return STATUS_FAIL;
1041 }
1042
1043 return STATUS_SUCCESS;
1044 }
1045
toggle_gpio(struct rtsx_chip * chip,u8 gpio)1046 void toggle_gpio(struct rtsx_chip *chip, u8 gpio)
1047 {
1048 u8 temp_reg;
1049
1050 rtsx_read_register(chip, CARD_GPIO, &temp_reg);
1051 temp_reg ^= (0x01 << gpio);
1052 rtsx_write_register(chip, CARD_GPIO, 0xFF, temp_reg);
1053 }
1054
turn_on_led(struct rtsx_chip * chip,u8 gpio)1055 void turn_on_led(struct rtsx_chip *chip, u8 gpio)
1056 {
1057 if (CHECK_PID(chip, 0x5288))
1058 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1059 (u8)(1 << gpio));
1060 else
1061 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1062 }
1063
turn_off_led(struct rtsx_chip * chip,u8 gpio)1064 void turn_off_led(struct rtsx_chip *chip, u8 gpio)
1065 {
1066 if (CHECK_PID(chip, 0x5288))
1067 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio), 0);
1068 else
1069 rtsx_write_register(chip, CARD_GPIO, (u8)(1 << gpio),
1070 (u8)(1 << gpio));
1071 }
1072
detect_card_cd(struct rtsx_chip * chip,int card)1073 int detect_card_cd(struct rtsx_chip *chip, int card)
1074 {
1075 u32 card_cd, status;
1076
1077 if (card == SD_CARD) {
1078 card_cd = SD_EXIST;
1079 } else if (card == MS_CARD) {
1080 card_cd = MS_EXIST;
1081 } else if (card == XD_CARD) {
1082 card_cd = XD_EXIST;
1083 } else {
1084 dev_dbg(rtsx_dev(chip), "Wrong card type: 0x%x\n", card);
1085 return STATUS_FAIL;
1086 }
1087
1088 status = rtsx_readl(chip, RTSX_BIPR);
1089 if (!(status & card_cd))
1090 return STATUS_FAIL;
1091
1092 return STATUS_SUCCESS;
1093 }
1094
check_card_exist(struct rtsx_chip * chip,unsigned int lun)1095 int check_card_exist(struct rtsx_chip *chip, unsigned int lun)
1096 {
1097 if (chip->card_exist & chip->lun2card[lun])
1098 return 1;
1099
1100 return 0;
1101 }
1102
check_card_ready(struct rtsx_chip * chip,unsigned int lun)1103 int check_card_ready(struct rtsx_chip *chip, unsigned int lun)
1104 {
1105 if (chip->card_ready & chip->lun2card[lun])
1106 return 1;
1107
1108 return 0;
1109 }
1110
check_card_wp(struct rtsx_chip * chip,unsigned int lun)1111 int check_card_wp(struct rtsx_chip *chip, unsigned int lun)
1112 {
1113 if (chip->card_wp & chip->lun2card[lun])
1114 return 1;
1115
1116 return 0;
1117 }
1118
get_lun_card(struct rtsx_chip * chip,unsigned int lun)1119 u8 get_lun_card(struct rtsx_chip *chip, unsigned int lun)
1120 {
1121 if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD)
1122 return (u8)XD_CARD;
1123 else if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD)
1124 return (u8)SD_CARD;
1125 else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD)
1126 return (u8)MS_CARD;
1127
1128 return 0;
1129 }
1130
eject_card(struct rtsx_chip * chip,unsigned int lun)1131 void eject_card(struct rtsx_chip *chip, unsigned int lun)
1132 {
1133 do_remaining_work(chip);
1134
1135 if ((chip->card_ready & chip->lun2card[lun]) == SD_CARD) {
1136 release_sd_card(chip);
1137 chip->card_ejected |= SD_CARD;
1138 chip->card_ready &= ~SD_CARD;
1139 chip->capacity[lun] = 0;
1140 } else if ((chip->card_ready & chip->lun2card[lun]) == XD_CARD) {
1141 release_xd_card(chip);
1142 chip->card_ejected |= XD_CARD;
1143 chip->card_ready &= ~XD_CARD;
1144 chip->capacity[lun] = 0;
1145 } else if ((chip->card_ready & chip->lun2card[lun]) == MS_CARD) {
1146 release_ms_card(chip);
1147 chip->card_ejected |= MS_CARD;
1148 chip->card_ready &= ~MS_CARD;
1149 chip->capacity[lun] = 0;
1150 }
1151 }
1152