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/vmalloc.h>
17
18 #include "rtsx.h"
19 #include "sd.h"
20 #include "xd.h"
21 #include "ms.h"
22
rtsx_calibration(struct rtsx_chip * chip)23 static void rtsx_calibration(struct rtsx_chip *chip)
24 {
25 rtsx_write_phy_register(chip, 0x1B, 0x135E);
26 wait_timeout(10);
27 rtsx_write_phy_register(chip, 0x00, 0x0280);
28 rtsx_write_phy_register(chip, 0x01, 0x7112);
29 rtsx_write_phy_register(chip, 0x01, 0x7110);
30 rtsx_write_phy_register(chip, 0x01, 0x7112);
31 rtsx_write_phy_register(chip, 0x01, 0x7113);
32 rtsx_write_phy_register(chip, 0x00, 0x0288);
33 }
34
rtsx_enable_card_int(struct rtsx_chip * chip)35 void rtsx_enable_card_int(struct rtsx_chip *chip)
36 {
37 u32 reg = rtsx_readl(chip, RTSX_BIER);
38 int i;
39
40 for (i = 0; i <= chip->max_lun; i++) {
41 if (chip->lun2card[i] & XD_CARD)
42 reg |= XD_INT_EN;
43 if (chip->lun2card[i] & SD_CARD)
44 reg |= SD_INT_EN;
45 if (chip->lun2card[i] & MS_CARD)
46 reg |= MS_INT_EN;
47 }
48 if (chip->hw_bypass_sd)
49 reg &= ~((u32)SD_INT_EN);
50
51 rtsx_writel(chip, RTSX_BIER, reg);
52 }
53
rtsx_enable_bus_int(struct rtsx_chip * chip)54 void rtsx_enable_bus_int(struct rtsx_chip *chip)
55 {
56 u32 reg = 0;
57 #ifndef DISABLE_CARD_INT
58 int i;
59 #endif
60
61 reg = TRANS_OK_INT_EN | TRANS_FAIL_INT_EN;
62
63 #ifndef DISABLE_CARD_INT
64 for (i = 0; i <= chip->max_lun; i++) {
65 dev_dbg(rtsx_dev(chip), "lun2card[%d] = 0x%02x\n",
66 i, chip->lun2card[i]);
67
68 if (chip->lun2card[i] & XD_CARD)
69 reg |= XD_INT_EN;
70 if (chip->lun2card[i] & SD_CARD)
71 reg |= SD_INT_EN;
72 if (chip->lun2card[i] & MS_CARD)
73 reg |= MS_INT_EN;
74 }
75 if (chip->hw_bypass_sd)
76 reg &= ~((u32)SD_INT_EN);
77 #endif
78
79 if (chip->ic_version >= IC_VER_C)
80 reg |= DELINK_INT_EN;
81 #ifdef SUPPORT_OCP
82 reg |= OC_INT_EN;
83 #endif
84 if (!chip->adma_mode)
85 reg |= DATA_DONE_INT_EN;
86
87 /* Enable Bus Interrupt */
88 rtsx_writel(chip, RTSX_BIER, reg);
89
90 dev_dbg(rtsx_dev(chip), "RTSX_BIER: 0x%08x\n", reg);
91 }
92
rtsx_disable_bus_int(struct rtsx_chip * chip)93 void rtsx_disable_bus_int(struct rtsx_chip *chip)
94 {
95 rtsx_writel(chip, RTSX_BIER, 0);
96 }
97
rtsx_pre_handle_sdio_old(struct rtsx_chip * chip)98 static int rtsx_pre_handle_sdio_old(struct rtsx_chip *chip)
99 {
100 int retval;
101
102 if (chip->ignore_sd && CHK_SDIO_EXIST(chip)) {
103 if (chip->asic_code) {
104 retval = rtsx_write_register(chip, CARD_PULL_CTL5,
105 0xFF,
106 MS_INS_PU | SD_WP_PU |
107 SD_CD_PU | SD_CMD_PU);
108 if (retval)
109 return retval;
110 } else {
111 retval = rtsx_write_register(chip, FPGA_PULL_CTL,
112 0xFF,
113 FPGA_SD_PULL_CTL_EN);
114 if (retval)
115 return retval;
116 }
117 retval = rtsx_write_register(chip, CARD_SHARE_MODE, 0xFF,
118 CARD_SHARE_48_SD);
119 if (retval)
120 return retval;
121
122 /* Enable SDIO internal clock */
123 retval = rtsx_write_register(chip, 0xFF2C, 0x01, 0x01);
124 if (retval)
125 return retval;
126
127 retval = rtsx_write_register(chip, SDIO_CTRL, 0xFF,
128 SDIO_BUS_CTRL | SDIO_CD_CTRL);
129 if (retval)
130 return retval;
131
132 chip->sd_int = 1;
133 chip->sd_io = 1;
134 } else {
135 chip->need_reset |= SD_CARD;
136 }
137
138 return STATUS_SUCCESS;
139 }
140
141 #ifdef HW_AUTO_SWITCH_SD_BUS
rtsx_pre_handle_sdio_new(struct rtsx_chip * chip)142 static int rtsx_pre_handle_sdio_new(struct rtsx_chip *chip)
143 {
144 u8 tmp;
145 bool sw_bypass_sd = false;
146 int retval;
147
148 if (chip->driver_first_load) {
149 if (CHECK_PID(chip, 0x5288)) {
150 retval = rtsx_read_register(chip, 0xFE5A, &tmp);
151 if (retval)
152 return retval;
153 if (tmp & 0x08)
154 sw_bypass_sd = true;
155 } else if (CHECK_PID(chip, 0x5208)) {
156 retval = rtsx_read_register(chip, 0xFE70, &tmp);
157 if (retval)
158 return retval;
159 if (tmp & 0x80)
160 sw_bypass_sd = true;
161 }
162 } else {
163 if (chip->sdio_in_charge)
164 sw_bypass_sd = true;
165 }
166 dev_dbg(rtsx_dev(chip), "chip->sdio_in_charge = %d\n",
167 chip->sdio_in_charge);
168 dev_dbg(rtsx_dev(chip), "chip->driver_first_load = %d\n",
169 chip->driver_first_load);
170 dev_dbg(rtsx_dev(chip), "sw_bypass_sd = %d\n",
171 sw_bypass_sd);
172
173 if (sw_bypass_sd) {
174 u8 cd_toggle_mask = 0;
175
176 retval = rtsx_read_register(chip, TLPTISTAT, &tmp);
177 if (retval)
178 return retval;
179 cd_toggle_mask = 0x08;
180
181 if (tmp & cd_toggle_mask) {
182 /* Disable sdio_bus_auto_switch */
183 if (CHECK_PID(chip, 0x5288)) {
184 retval = rtsx_write_register(chip, 0xFE5A,
185 0x08, 0x00);
186 if (retval)
187 return retval;
188 } else if (CHECK_PID(chip, 0x5208)) {
189 retval = rtsx_write_register(chip, 0xFE70,
190 0x80, 0x00);
191 if (retval)
192 return retval;
193 }
194
195 retval = rtsx_write_register(chip, TLPTISTAT, 0xFF,
196 tmp);
197 if (retval)
198 return retval;
199
200 chip->need_reset |= SD_CARD;
201 } else {
202 dev_dbg(rtsx_dev(chip), "Chip inserted with SDIO!\n");
203
204 if (chip->asic_code) {
205 retval = sd_pull_ctl_enable(chip);
206 if (retval != STATUS_SUCCESS)
207 return STATUS_FAIL;
208 } else {
209 retval = rtsx_write_register
210 (chip, FPGA_PULL_CTL,
211 FPGA_SD_PULL_CTL_BIT | 0x20,
212 0);
213 if (retval)
214 return retval;
215 }
216 retval = card_share_mode(chip, SD_CARD);
217 if (retval != STATUS_SUCCESS)
218 return STATUS_FAIL;
219
220 /* Enable sdio_bus_auto_switch */
221 if (CHECK_PID(chip, 0x5288)) {
222 retval = rtsx_write_register(chip, 0xFE5A,
223 0x08, 0x08);
224 if (retval)
225 return retval;
226 } else if (CHECK_PID(chip, 0x5208)) {
227 retval = rtsx_write_register(chip, 0xFE70,
228 0x80, 0x80);
229 if (retval)
230 return retval;
231 }
232
233 chip->chip_insert_with_sdio = 1;
234 chip->sd_io = 1;
235 }
236 } else {
237 retval = rtsx_write_register(chip, TLPTISTAT, 0x08, 0x08);
238 if (retval)
239 return retval;
240
241 chip->need_reset |= SD_CARD;
242 }
243
244 return STATUS_SUCCESS;
245 }
246 #endif
247
rtsx_reset_aspm(struct rtsx_chip * chip)248 static int rtsx_reset_aspm(struct rtsx_chip *chip)
249 {
250 int ret;
251
252 if (chip->dynamic_aspm) {
253 if (!CHK_SDIO_EXIST(chip) || !CHECK_PID(chip, 0x5288))
254 return STATUS_SUCCESS;
255
256 ret = rtsx_write_cfg_dw(chip, 2, 0xC0, 0xFF,
257 chip->aspm_l0s_l1_en);
258 if (ret != STATUS_SUCCESS)
259 return STATUS_FAIL;
260
261 return STATUS_SUCCESS;
262 }
263
264 if (CHECK_PID(chip, 0x5208)) {
265 ret = rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFF, 0x3F);
266 if (ret)
267 return ret;
268 }
269 ret = rtsx_write_config_byte(chip, LCTLR, chip->aspm_l0s_l1_en);
270 if (ret != STATUS_SUCCESS)
271 return STATUS_FAIL;
272
273 chip->aspm_level[0] = chip->aspm_l0s_l1_en;
274 if (CHK_SDIO_EXIST(chip)) {
275 chip->aspm_level[1] = chip->aspm_l0s_l1_en;
276 ret = rtsx_write_cfg_dw(chip, CHECK_PID(chip, 0x5288) ? 2 : 1,
277 0xC0, 0xFF, chip->aspm_l0s_l1_en);
278 if (ret != STATUS_SUCCESS)
279 return STATUS_FAIL;
280 }
281
282 chip->aspm_enabled = 1;
283
284 return STATUS_SUCCESS;
285 }
286
rtsx_enable_pcie_intr(struct rtsx_chip * chip)287 static int rtsx_enable_pcie_intr(struct rtsx_chip *chip)
288 {
289 int ret;
290
291 if (!chip->asic_code || !CHECK_PID(chip, 0x5208)) {
292 rtsx_enable_bus_int(chip);
293 return STATUS_SUCCESS;
294 }
295
296 if (chip->phy_debug_mode) {
297 ret = rtsx_write_register(chip, CDRESUMECTL, 0x77, 0);
298 if (ret)
299 return ret;
300 rtsx_disable_bus_int(chip);
301 } else {
302 rtsx_enable_bus_int(chip);
303 }
304
305 if (chip->ic_version >= IC_VER_D) {
306 u16 reg;
307
308 ret = rtsx_read_phy_register(chip, 0x00, ®);
309 if (ret != STATUS_SUCCESS)
310 return STATUS_FAIL;
311
312 reg &= 0xFE7F;
313 reg |= 0x80;
314 ret = rtsx_write_phy_register(chip, 0x00, reg);
315 if (ret != STATUS_SUCCESS)
316 return STATUS_FAIL;
317
318 ret = rtsx_read_phy_register(chip, 0x1C, ®);
319 if (ret != STATUS_SUCCESS)
320 return STATUS_FAIL;
321
322 reg &= 0xFFF7;
323 ret = rtsx_write_phy_register(chip, 0x1C, reg);
324 if (ret != STATUS_SUCCESS)
325 return STATUS_FAIL;
326 }
327
328 if (chip->driver_first_load && (chip->ic_version < IC_VER_C))
329 rtsx_calibration(chip);
330
331 return STATUS_SUCCESS;
332 }
333
rtsx_reset_chip(struct rtsx_chip * chip)334 int rtsx_reset_chip(struct rtsx_chip *chip)
335 {
336 int retval;
337
338 rtsx_writel(chip, RTSX_HCBAR, chip->host_cmds_addr);
339
340 rtsx_disable_aspm(chip);
341
342 retval = rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03, 0x00);
343 if (retval)
344 return retval;
345
346 /* Disable card clock */
347 retval = rtsx_write_register(chip, CARD_CLK_EN, 0x1E, 0);
348 if (retval)
349 return retval;
350
351 #ifdef SUPPORT_OCP
352 /* SSC power on, OCD power on */
353 if (CHECK_LUN_MODE(chip, SD_MS_2LUN)) {
354 retval = rtsx_write_register(chip, FPDCTL, OC_POWER_DOWN, 0);
355 if (retval)
356 return retval;
357 } else {
358 retval = rtsx_write_register(chip, FPDCTL, OC_POWER_DOWN,
359 MS_OC_POWER_DOWN);
360 if (retval)
361 return retval;
362 }
363
364 retval = rtsx_write_register(chip, OCPPARA1, OCP_TIME_MASK,
365 OCP_TIME_800);
366 if (retval)
367 return retval;
368 retval = rtsx_write_register(chip, OCPPARA2, OCP_THD_MASK,
369 OCP_THD_244_946);
370 if (retval)
371 return retval;
372 retval = rtsx_write_register(chip, OCPCTL, 0xFF,
373 CARD_OC_INT_EN | CARD_DETECT_EN);
374 if (retval)
375 return retval;
376 #else
377 /* OC power down */
378 retval = rtsx_write_register(chip, FPDCTL, OC_POWER_DOWN,
379 OC_POWER_DOWN);
380 if (retval)
381 return retval;
382 #endif
383
384 if (!CHECK_PID(chip, 0x5288)) {
385 retval = rtsx_write_register(chip, CARD_GPIO_DIR, 0xFF, 0x03);
386 if (retval)
387 return retval;
388 }
389
390 /* Turn off LED */
391 retval = rtsx_write_register(chip, CARD_GPIO, 0xFF, 0x03);
392 if (retval)
393 return retval;
394
395 /* Reset delink mode */
396 retval = rtsx_write_register(chip, CHANGE_LINK_STATE, 0x0A, 0);
397 if (retval)
398 return retval;
399
400 /* Card driving select */
401 retval = rtsx_write_register(chip, CARD_DRIVE_SEL, 0xFF,
402 chip->card_drive_sel);
403 if (retval)
404 return retval;
405
406 #ifdef LED_AUTO_BLINK
407 retval = rtsx_write_register(chip, CARD_AUTO_BLINK, 0xFF,
408 LED_BLINK_SPEED | BLINK_EN | LED_GPIO0);
409 if (retval)
410 return retval;
411 #endif
412
413 if (chip->asic_code) {
414 /* Enable SSC Clock */
415 retval = rtsx_write_register(chip, SSC_CTL1, 0xFF,
416 SSC_8X_EN | SSC_SEL_4M);
417 if (retval)
418 return retval;
419 retval = rtsx_write_register(chip, SSC_CTL2, 0xFF, 0x12);
420 if (retval)
421 return retval;
422 }
423
424 /*
425 * Disable cd_pwr_save (u_force_rst_core_en=0, u_cd_rst_core_en=0)
426 * 0xFE5B
427 * bit[1] u_cd_rst_core_en rst_value = 0
428 * bit[2] u_force_rst_core_en rst_value = 0
429 * bit[5] u_mac_phy_rst_n_dbg rst_value = 1
430 * bit[4] u_non_sticky_rst_n_dbg rst_value = 0
431 */
432 retval = rtsx_write_register(chip, CHANGE_LINK_STATE, 0x16, 0x10);
433 if (retval)
434 return retval;
435
436 /* Enable ASPM */
437 if (chip->aspm_l0s_l1_en) {
438 retval = rtsx_reset_aspm(chip);
439 if (retval != STATUS_SUCCESS)
440 return STATUS_FAIL;
441 } else {
442 if (chip->asic_code && CHECK_PID(chip, 0x5208)) {
443 retval = rtsx_write_phy_register(chip, 0x07, 0x0129);
444 if (retval != STATUS_SUCCESS)
445 return STATUS_FAIL;
446 }
447 retval = rtsx_write_config_byte(chip, LCTLR,
448 chip->aspm_l0s_l1_en);
449 if (retval != STATUS_SUCCESS)
450 return STATUS_FAIL;
451 }
452
453 retval = rtsx_write_config_byte(chip, 0x81, 1);
454 if (retval != STATUS_SUCCESS)
455 return STATUS_FAIL;
456
457 if (CHK_SDIO_EXIST(chip)) {
458 retval = rtsx_write_cfg_dw(chip,
459 CHECK_PID(chip, 0x5288) ? 2 : 1,
460 0xC0, 0xFF00, 0x0100);
461
462 if (retval != STATUS_SUCCESS)
463 return STATUS_FAIL;
464 }
465
466 if (CHECK_PID(chip, 0x5288) && !CHK_SDIO_EXIST(chip)) {
467 retval = rtsx_write_cfg_dw(chip, 2, 0xC0, 0xFFFF, 0x0103);
468 if (retval != STATUS_SUCCESS)
469 return STATUS_FAIL;
470
471 retval = rtsx_write_cfg_dw(chip, 2, 0x84, 0xFF, 0x03);
472 if (retval != STATUS_SUCCESS)
473 return STATUS_FAIL;
474 }
475
476 retval = rtsx_write_register(chip, IRQSTAT0, LINK_RDY_INT,
477 LINK_RDY_INT);
478 if (retval)
479 return retval;
480
481 retval = rtsx_write_register(chip, PERST_GLITCH_WIDTH, 0xFF, 0x80);
482 if (retval)
483 return retval;
484
485 retval = rtsx_enable_pcie_intr(chip);
486 if (retval != STATUS_SUCCESS)
487 return STATUS_FAIL;
488
489 chip->need_reset = 0;
490
491 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
492
493 if (chip->hw_bypass_sd)
494 goto nextcard;
495 dev_dbg(rtsx_dev(chip), "In %s, chip->int_reg = 0x%x\n", __func__,
496 chip->int_reg);
497 if (chip->int_reg & SD_EXIST) {
498 #ifdef HW_AUTO_SWITCH_SD_BUS
499 if (CHECK_PID(chip, 0x5208) && (chip->ic_version < IC_VER_C))
500 retval = rtsx_pre_handle_sdio_old(chip);
501 else
502 retval = rtsx_pre_handle_sdio_new(chip);
503
504 dev_dbg(rtsx_dev(chip), "chip->need_reset = 0x%x (%s)\n",
505 (unsigned int)(chip->need_reset), __func__);
506 #else /* HW_AUTO_SWITCH_SD_BUS */
507 retval = rtsx_pre_handle_sdio_old(chip);
508 #endif /* HW_AUTO_SWITCH_SD_BUS */
509 if (retval != STATUS_SUCCESS)
510 return STATUS_FAIL;
511
512 } else {
513 chip->sd_io = 0;
514 retval = rtsx_write_register(chip, SDIO_CTRL,
515 SDIO_BUS_CTRL | SDIO_CD_CTRL, 0);
516 if (retval)
517 return retval;
518 }
519
520 nextcard:
521 if (chip->int_reg & XD_EXIST)
522 chip->need_reset |= XD_CARD;
523 if (chip->int_reg & MS_EXIST)
524 chip->need_reset |= MS_CARD;
525 if (chip->int_reg & CARD_EXIST) {
526 retval = rtsx_write_register(chip, SSC_CTL1, SSC_RSTB,
527 SSC_RSTB);
528 if (retval)
529 return retval;
530 }
531
532 dev_dbg(rtsx_dev(chip), "In %s, chip->need_reset = 0x%x\n", __func__,
533 (unsigned int)(chip->need_reset));
534
535 retval = rtsx_write_register(chip, RCCTL, 0x01, 0x00);
536 if (retval)
537 return retval;
538
539 if (CHECK_PID(chip, 0x5208) || CHECK_PID(chip, 0x5288)) {
540 /* Turn off main power when entering S3/S4 state */
541 retval = rtsx_write_register(chip, MAIN_PWR_OFF_CTL, 0x03,
542 0x03);
543 if (retval)
544 return retval;
545 }
546
547 if (chip->remote_wakeup_en && !chip->auto_delink_en) {
548 retval = rtsx_write_register(chip, WAKE_SEL_CTL, 0x07, 0x07);
549 if (retval)
550 return retval;
551 if (chip->aux_pwr_exist) {
552 retval = rtsx_write_register(chip, PME_FORCE_CTL,
553 0xFF, 0x33);
554 if (retval)
555 return retval;
556 }
557 } else {
558 retval = rtsx_write_register(chip, WAKE_SEL_CTL, 0x07, 0x04);
559 if (retval)
560 return retval;
561 retval = rtsx_write_register(chip, PME_FORCE_CTL, 0xFF, 0x30);
562 if (retval)
563 return retval;
564 }
565
566 if (CHECK_PID(chip, 0x5208) && (chip->ic_version >= IC_VER_D)) {
567 retval = rtsx_write_register(chip, PETXCFG, 0x1C, 0x14);
568 if (retval)
569 return retval;
570 }
571
572 if (chip->asic_code && CHECK_PID(chip, 0x5208)) {
573 retval = rtsx_clr_phy_reg_bit(chip, 0x1C, 2);
574 if (retval != STATUS_SUCCESS)
575 return STATUS_FAIL;
576 }
577
578 if (chip->ft2_fast_mode) {
579 retval = rtsx_write_register(chip, CARD_PWR_CTL, 0xFF,
580 MS_PARTIAL_POWER_ON |
581 SD_PARTIAL_POWER_ON);
582 if (retval)
583 return retval;
584 udelay(chip->pmos_pwr_on_interval);
585 retval = rtsx_write_register(chip, CARD_PWR_CTL, 0xFF,
586 MS_POWER_ON | SD_POWER_ON);
587 if (retval)
588 return retval;
589
590 wait_timeout(200);
591 }
592
593 /* Reset card */
594 rtsx_reset_detected_cards(chip, 0);
595
596 chip->driver_first_load = 0;
597
598 return STATUS_SUCCESS;
599 }
600
valid_sd_speed_prior(u32 sd_speed_prior)601 static inline int valid_sd_speed_prior(u32 sd_speed_prior)
602 {
603 bool valid_para = true;
604 int i;
605
606 for (i = 0; i < 4; i++) {
607 u8 tmp = (u8)(sd_speed_prior >> (i * 8));
608
609 if ((tmp < 0x01) || (tmp > 0x04)) {
610 valid_para = false;
611 break;
612 }
613 }
614
615 return valid_para;
616 }
617
valid_sd_current_prior(u32 sd_current_prior)618 static inline int valid_sd_current_prior(u32 sd_current_prior)
619 {
620 bool valid_para = true;
621 int i;
622
623 for (i = 0; i < 4; i++) {
624 u8 tmp = (u8)(sd_current_prior >> (i * 8));
625
626 if (tmp > 0x03) {
627 valid_para = false;
628 break;
629 }
630 }
631
632 return valid_para;
633 }
634
rts5208_init(struct rtsx_chip * chip)635 static int rts5208_init(struct rtsx_chip *chip)
636 {
637 int retval;
638 u16 reg = 0;
639 u8 val = 0;
640
641 retval = rtsx_write_register(chip, CLK_SEL, 0x03, 0x03);
642 if (retval)
643 return retval;
644 retval = rtsx_read_register(chip, CLK_SEL, &val);
645 if (retval)
646 return retval;
647 chip->asic_code = val == 0 ? 1 : 0;
648
649 if (chip->asic_code) {
650 retval = rtsx_read_phy_register(chip, 0x1C, ®);
651 if (retval != STATUS_SUCCESS)
652 return STATUS_FAIL;
653
654 dev_dbg(rtsx_dev(chip), "Value of phy register 0x1C is 0x%x\n",
655 reg);
656 chip->ic_version = (reg >> 4) & 0x07;
657 chip->phy_debug_mode = reg & PHY_DEBUG_MODE ? 1 : 0;
658
659 } else {
660 retval = rtsx_read_register(chip, 0xFE80, &val);
661 if (retval)
662 return retval;
663 chip->ic_version = val;
664 chip->phy_debug_mode = 0;
665 }
666
667 retval = rtsx_read_register(chip, PDINFO, &val);
668 if (retval)
669 return retval;
670 dev_dbg(rtsx_dev(chip), "PDINFO: 0x%x\n", val);
671 chip->aux_pwr_exist = val & AUX_PWR_DETECTED ? 1 : 0;
672
673 retval = rtsx_read_register(chip, 0xFE50, &val);
674 if (retval)
675 return retval;
676 chip->hw_bypass_sd = val & 0x01 ? 1 : 0;
677
678 rtsx_read_config_byte(chip, 0x0E, &val);
679 if (val & 0x80)
680 SET_SDIO_EXIST(chip);
681 else
682 CLR_SDIO_EXIST(chip);
683
684 if (chip->use_hw_setting) {
685 retval = rtsx_read_register(chip, CHANGE_LINK_STATE, &val);
686 if (retval)
687 return retval;
688 chip->auto_delink_en = val & 0x80 ? 1 : 0;
689 }
690
691 return STATUS_SUCCESS;
692 }
693
rts5288_init(struct rtsx_chip * chip)694 static int rts5288_init(struct rtsx_chip *chip)
695 {
696 int retval;
697 u8 val = 0, max_func;
698 u32 lval = 0;
699
700 retval = rtsx_write_register(chip, CLK_SEL, 0x03, 0x03);
701 if (retval)
702 return retval;
703 retval = rtsx_read_register(chip, CLK_SEL, &val);
704 if (retval)
705 return retval;
706 chip->asic_code = val == 0 ? 1 : 0;
707
708 chip->ic_version = 0;
709 chip->phy_debug_mode = 0;
710
711 retval = rtsx_read_register(chip, PDINFO, &val);
712 if (retval)
713 return retval;
714 dev_dbg(rtsx_dev(chip), "PDINFO: 0x%x\n", val);
715 chip->aux_pwr_exist = val & AUX_PWR_DETECTED ? 1 : 0;
716
717 retval = rtsx_read_register(chip, CARD_SHARE_MODE, &val);
718 if (retval)
719 return retval;
720 dev_dbg(rtsx_dev(chip), "CARD_SHARE_MODE: 0x%x\n", val);
721 chip->baro_pkg = val & 0x04 ? QFN : LQFP;
722
723 retval = rtsx_read_register(chip, 0xFE5A, &val);
724 if (retval)
725 return retval;
726 chip->hw_bypass_sd = val & 0x10 ? 1 : 0;
727
728 retval = rtsx_read_cfg_dw(chip, 0, 0x718, &lval);
729 if (retval != STATUS_SUCCESS)
730 return STATUS_FAIL;
731
732 max_func = (u8)((lval >> 29) & 0x07);
733 dev_dbg(rtsx_dev(chip), "Max function number: %d\n", max_func);
734 if (max_func == 0x02)
735 SET_SDIO_EXIST(chip);
736 else
737 CLR_SDIO_EXIST(chip);
738
739 if (chip->use_hw_setting) {
740 retval = rtsx_read_register(chip, CHANGE_LINK_STATE, &val);
741 if (retval)
742 return retval;
743 chip->auto_delink_en = val & 0x80 ? 1 : 0;
744
745 if (CHECK_BARO_PKG(chip, LQFP))
746 chip->lun_mode = SD_MS_1LUN;
747 else
748 chip->lun_mode = DEFAULT_SINGLE;
749 }
750
751 return STATUS_SUCCESS;
752 }
753
rtsx_init_chip(struct rtsx_chip * chip)754 int rtsx_init_chip(struct rtsx_chip *chip)
755 {
756 struct sd_info *sd_card = &chip->sd_card;
757 struct xd_info *xd_card = &chip->xd_card;
758 struct ms_info *ms_card = &chip->ms_card;
759 int retval;
760 unsigned int i;
761
762 dev_dbg(rtsx_dev(chip), "Vendor ID: 0x%04x, Product ID: 0x%04x\n",
763 chip->vendor_id, chip->product_id);
764
765 chip->ic_version = 0;
766
767 memset(xd_card, 0, sizeof(struct xd_info));
768 memset(sd_card, 0, sizeof(struct sd_info));
769 memset(ms_card, 0, sizeof(struct ms_info));
770
771 chip->xd_reset_counter = 0;
772 chip->sd_reset_counter = 0;
773 chip->ms_reset_counter = 0;
774
775 chip->xd_show_cnt = MAX_SHOW_CNT;
776 chip->sd_show_cnt = MAX_SHOW_CNT;
777 chip->ms_show_cnt = MAX_SHOW_CNT;
778
779 chip->sd_io = 0;
780 chip->auto_delink_cnt = 0;
781 chip->auto_delink_allowed = 1;
782 rtsx_set_stat(chip, RTSX_STAT_INIT);
783
784 chip->aspm_enabled = 0;
785 chip->chip_insert_with_sdio = 0;
786 chip->sdio_aspm = 0;
787 chip->sdio_idle = 0;
788 chip->sdio_counter = 0;
789 chip->cur_card = 0;
790 chip->phy_debug_mode = 0;
791 chip->sdio_func_exist = 0;
792 memset(chip->sdio_raw_data, 0, 12);
793
794 for (i = 0; i < MAX_ALLOWED_LUN_CNT; i++) {
795 set_sense_type(chip, i, SENSE_TYPE_NO_SENSE);
796 chip->rw_fail_cnt[i] = 0;
797 }
798
799 if (!valid_sd_speed_prior(chip->sd_speed_prior))
800 chip->sd_speed_prior = 0x01040203;
801
802 dev_dbg(rtsx_dev(chip), "sd_speed_prior = 0x%08x\n",
803 chip->sd_speed_prior);
804
805 if (!valid_sd_current_prior(chip->sd_current_prior))
806 chip->sd_current_prior = 0x00010203;
807
808 dev_dbg(rtsx_dev(chip), "sd_current_prior = 0x%08x\n",
809 chip->sd_current_prior);
810
811 if ((chip->sd_ddr_tx_phase > 31) || (chip->sd_ddr_tx_phase < 0))
812 chip->sd_ddr_tx_phase = 0;
813
814 if ((chip->mmc_ddr_tx_phase > 31) || (chip->mmc_ddr_tx_phase < 0))
815 chip->mmc_ddr_tx_phase = 0;
816
817 retval = rtsx_write_register(chip, FPDCTL, SSC_POWER_DOWN, 0);
818 if (retval)
819 return retval;
820 wait_timeout(200);
821 retval = rtsx_write_register(chip, CLK_DIV, 0x07, 0x07);
822 if (retval)
823 return retval;
824 dev_dbg(rtsx_dev(chip), "chip->use_hw_setting = %d\n",
825 chip->use_hw_setting);
826
827 if (CHECK_PID(chip, 0x5208)) {
828 retval = rts5208_init(chip);
829 if (retval != STATUS_SUCCESS)
830 return STATUS_FAIL;
831
832 } else if (CHECK_PID(chip, 0x5288)) {
833 retval = rts5288_init(chip);
834 if (retval != STATUS_SUCCESS)
835 return STATUS_FAIL;
836 }
837
838 if (chip->ss_en == 2)
839 chip->ss_en = 0;
840
841 dev_dbg(rtsx_dev(chip), "chip->asic_code = %d\n", chip->asic_code);
842 dev_dbg(rtsx_dev(chip), "chip->ic_version = 0x%x\n", chip->ic_version);
843 dev_dbg(rtsx_dev(chip), "chip->phy_debug_mode = %d\n",
844 chip->phy_debug_mode);
845 dev_dbg(rtsx_dev(chip), "chip->aux_pwr_exist = %d\n",
846 chip->aux_pwr_exist);
847 dev_dbg(rtsx_dev(chip), "chip->sdio_func_exist = %d\n",
848 chip->sdio_func_exist);
849 dev_dbg(rtsx_dev(chip), "chip->hw_bypass_sd = %d\n",
850 chip->hw_bypass_sd);
851 dev_dbg(rtsx_dev(chip), "chip->aspm_l0s_l1_en = %d\n",
852 chip->aspm_l0s_l1_en);
853 dev_dbg(rtsx_dev(chip), "chip->lun_mode = %d\n", chip->lun_mode);
854 dev_dbg(rtsx_dev(chip), "chip->auto_delink_en = %d\n",
855 chip->auto_delink_en);
856 dev_dbg(rtsx_dev(chip), "chip->ss_en = %d\n", chip->ss_en);
857 dev_dbg(rtsx_dev(chip), "chip->baro_pkg = %d\n", chip->baro_pkg);
858
859 if (CHECK_LUN_MODE(chip, SD_MS_2LUN)) {
860 chip->card2lun[SD_CARD] = 0;
861 chip->card2lun[MS_CARD] = 1;
862 chip->card2lun[XD_CARD] = 0xFF;
863 chip->lun2card[0] = SD_CARD;
864 chip->lun2card[1] = MS_CARD;
865 chip->max_lun = 1;
866 SET_SDIO_IGNORED(chip);
867 } else if (CHECK_LUN_MODE(chip, SD_MS_1LUN)) {
868 chip->card2lun[SD_CARD] = 0;
869 chip->card2lun[MS_CARD] = 0;
870 chip->card2lun[XD_CARD] = 0xFF;
871 chip->lun2card[0] = SD_CARD | MS_CARD;
872 chip->max_lun = 0;
873 } else {
874 chip->card2lun[XD_CARD] = 0;
875 chip->card2lun[SD_CARD] = 0;
876 chip->card2lun[MS_CARD] = 0;
877 chip->lun2card[0] = XD_CARD | SD_CARD | MS_CARD;
878 chip->max_lun = 0;
879 }
880
881 retval = rtsx_reset_chip(chip);
882 if (retval != STATUS_SUCCESS)
883 return STATUS_FAIL;
884
885 return STATUS_SUCCESS;
886 }
887
rtsx_release_chip(struct rtsx_chip * chip)888 void rtsx_release_chip(struct rtsx_chip *chip)
889 {
890 xd_free_l2p_tbl(chip);
891 ms_free_l2p_tbl(chip);
892 chip->card_exist = 0;
893 chip->card_ready = 0;
894 }
895
896 #if !defined(LED_AUTO_BLINK) && defined(REGULAR_BLINK)
rtsx_blink_led(struct rtsx_chip * chip)897 static inline void rtsx_blink_led(struct rtsx_chip *chip)
898 {
899 if (chip->card_exist && chip->blink_led) {
900 if (chip->led_toggle_counter < LED_TOGGLE_INTERVAL) {
901 chip->led_toggle_counter++;
902 } else {
903 chip->led_toggle_counter = 0;
904 toggle_gpio(chip, LED_GPIO);
905 }
906 }
907 }
908 #endif
909
rtsx_monitor_aspm_config(struct rtsx_chip * chip)910 static void rtsx_monitor_aspm_config(struct rtsx_chip *chip)
911 {
912 bool reg_changed, maybe_support_aspm;
913 u32 tmp = 0;
914 u8 reg0 = 0, reg1 = 0;
915
916 maybe_support_aspm = false;
917 reg_changed = false;
918 rtsx_read_config_byte(chip, LCTLR, ®0);
919 if (chip->aspm_level[0] != reg0) {
920 reg_changed = true;
921 chip->aspm_level[0] = reg0;
922 }
923 if (CHK_SDIO_EXIST(chip) && !CHK_SDIO_IGNORED(chip)) {
924 rtsx_read_cfg_dw(chip, 1, 0xC0, &tmp);
925 reg1 = (u8)tmp;
926 if (chip->aspm_level[1] != reg1) {
927 reg_changed = true;
928 chip->aspm_level[1] = reg1;
929 }
930
931 if ((reg0 & 0x03) && (reg1 & 0x03))
932 maybe_support_aspm = true;
933
934 } else {
935 if (reg0 & 0x03)
936 maybe_support_aspm = true;
937 }
938
939 if (reg_changed) {
940 if (maybe_support_aspm)
941 chip->aspm_l0s_l1_en = 0x03;
942
943 dev_dbg(rtsx_dev(chip), "aspm_level[0] = 0x%02x, aspm_level[1] = 0x%02x\n",
944 chip->aspm_level[0], chip->aspm_level[1]);
945
946 if (chip->aspm_l0s_l1_en) {
947 chip->aspm_enabled = 1;
948 } else {
949 chip->aspm_enabled = 0;
950 chip->sdio_aspm = 0;
951 }
952 rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFF,
953 0x30 | chip->aspm_level[0] |
954 (chip->aspm_level[1] << 2));
955 }
956 }
957
rtsx_manage_ocp(struct rtsx_chip * chip)958 static void rtsx_manage_ocp(struct rtsx_chip *chip)
959 {
960 #ifdef SUPPORT_OCP
961 if (!chip->ocp_int)
962 return;
963
964 rtsx_read_register(chip, OCPSTAT, &chip->ocp_stat);
965
966 if (chip->card_exist & SD_CARD)
967 sd_power_off_card3v3(chip);
968 else if (chip->card_exist & MS_CARD)
969 ms_power_off_card3v3(chip);
970 else if (chip->card_exist & XD_CARD)
971 xd_power_off_card3v3(chip);
972
973 chip->ocp_int = 0;
974 #endif
975 }
976
rtsx_manage_sd_lock(struct rtsx_chip * chip)977 static void rtsx_manage_sd_lock(struct rtsx_chip *chip)
978 {
979 #ifdef SUPPORT_SD_LOCK
980 struct sd_info *sd_card = &chip->sd_card;
981 u8 val;
982
983 if (!sd_card->sd_erase_status)
984 return;
985
986 if (chip->card_exist & SD_CARD) {
987 rtsx_read_register(chip, 0xFD30, &val);
988 if (val & 0x02) {
989 sd_card->sd_erase_status = SD_NOT_ERASE;
990 sd_card->sd_lock_notify = 1;
991 chip->need_reinit |= SD_CARD;
992 }
993 } else {
994 sd_card->sd_erase_status = SD_NOT_ERASE;
995 }
996 #endif
997 }
998
rtsx_is_ss_allowed(struct rtsx_chip * chip)999 static bool rtsx_is_ss_allowed(struct rtsx_chip *chip)
1000 {
1001 u32 val;
1002
1003 if (!chip->ss_en || CHECK_PID(chip, 0x5288))
1004 return false;
1005
1006 if (CHK_SDIO_EXIST(chip) && !CHK_SDIO_IGNORED(chip)) {
1007 rtsx_read_cfg_dw(chip, 1, 0x04, &val);
1008 if (val & 0x07)
1009 return false;
1010 }
1011
1012 return true;
1013 }
1014
rtsx_manage_ss(struct rtsx_chip * chip)1015 static void rtsx_manage_ss(struct rtsx_chip *chip)
1016 {
1017 if (!rtsx_is_ss_allowed(chip) || chip->sd_io)
1018 return;
1019
1020 if (rtsx_get_stat(chip) != RTSX_STAT_IDLE) {
1021 chip->ss_counter = 0;
1022 return;
1023 }
1024
1025 if (chip->ss_counter < (chip->ss_idle_period / POLLING_INTERVAL))
1026 chip->ss_counter++;
1027 else
1028 rtsx_exclusive_enter_ss(chip);
1029 }
1030
rtsx_manage_aspm(struct rtsx_chip * chip)1031 static void rtsx_manage_aspm(struct rtsx_chip *chip)
1032 {
1033 u8 data;
1034
1035 if (!CHECK_PID(chip, 0x5208))
1036 return;
1037
1038 rtsx_monitor_aspm_config(chip);
1039
1040 #ifdef SUPPORT_SDIO_ASPM
1041 if (!CHK_SDIO_EXIST(chip) || CHK_SDIO_IGNORED(chip) ||
1042 !chip->aspm_l0s_l1_en || !chip->dynamic_aspm)
1043 return;
1044
1045 if (chip->sd_io) {
1046 dynamic_configure_sdio_aspm(chip);
1047 return;
1048 }
1049
1050 if (chip->sdio_aspm)
1051 return;
1052
1053 dev_dbg(rtsx_dev(chip), "SDIO enter ASPM!\n");
1054 data = 0x30 | (chip->aspm_level[1] << 2);
1055 rtsx_write_register(chip, ASPM_FORCE_CTL, 0xFC, data);
1056 chip->sdio_aspm = 1;
1057 #endif
1058 }
1059
rtsx_manage_idle(struct rtsx_chip * chip)1060 static void rtsx_manage_idle(struct rtsx_chip *chip)
1061 {
1062 if (chip->idle_counter < IDLE_MAX_COUNT) {
1063 chip->idle_counter++;
1064 return;
1065 }
1066
1067 if (rtsx_get_stat(chip) == RTSX_STAT_IDLE)
1068 return;
1069
1070 dev_dbg(rtsx_dev(chip), "Idle state!\n");
1071 rtsx_set_stat(chip, RTSX_STAT_IDLE);
1072
1073 #if !defined(LED_AUTO_BLINK) && defined(REGULAR_BLINK)
1074 chip->led_toggle_counter = 0;
1075 #endif
1076 rtsx_force_power_on(chip, SSC_PDCTL);
1077
1078 turn_off_led(chip, LED_GPIO);
1079
1080 if (chip->auto_power_down && !chip->card_ready && !chip->sd_io)
1081 rtsx_force_power_down(chip, SSC_PDCTL | OC_PDCTL);
1082 }
1083
rtsx_manage_2lun_mode(struct rtsx_chip * chip)1084 static void rtsx_manage_2lun_mode(struct rtsx_chip *chip)
1085 {
1086 #ifdef SUPPORT_OCP
1087 u8 sd_oc, ms_oc;
1088
1089 sd_oc = chip->ocp_stat & (SD_OC_NOW | SD_OC_EVER);
1090 ms_oc = chip->ocp_stat & (MS_OC_NOW | MS_OC_EVER);
1091
1092 if (sd_oc || ms_oc)
1093 dev_dbg(rtsx_dev(chip), "Over current, OCPSTAT is 0x%x\n",
1094 chip->ocp_stat);
1095
1096 if (sd_oc && (chip->card_exist & SD_CARD)) {
1097 rtsx_write_register(chip, CARD_OE, SD_OUTPUT_EN, 0);
1098 card_power_off(chip, SD_CARD);
1099 chip->card_fail |= SD_CARD;
1100 }
1101
1102 if (ms_oc && (chip->card_exist & MS_CARD)) {
1103 rtsx_write_register(chip, CARD_OE, MS_OUTPUT_EN, 0);
1104 card_power_off(chip, MS_CARD);
1105 chip->card_fail |= MS_CARD;
1106 }
1107 #endif
1108 }
1109
rtsx_manage_1lun_mode(struct rtsx_chip * chip)1110 static void rtsx_manage_1lun_mode(struct rtsx_chip *chip)
1111 {
1112 #ifdef SUPPORT_OCP
1113 if (!(chip->ocp_stat & (SD_OC_NOW | SD_OC_EVER)))
1114 return;
1115
1116 dev_dbg(rtsx_dev(chip), "Over current, OCPSTAT is 0x%x\n",
1117 chip->ocp_stat);
1118
1119 if (chip->card_exist & SD_CARD) {
1120 rtsx_write_register(chip, CARD_OE, SD_OUTPUT_EN, 0);
1121 chip->card_fail |= SD_CARD;
1122 } else if (chip->card_exist & MS_CARD) {
1123 rtsx_write_register(chip, CARD_OE, MS_OUTPUT_EN, 0);
1124 chip->card_fail |= MS_CARD;
1125 } else if (chip->card_exist & XD_CARD) {
1126 rtsx_write_register(chip, CARD_OE, XD_OUTPUT_EN, 0);
1127 chip->card_fail |= XD_CARD;
1128 }
1129 card_power_off(chip, SD_CARD);
1130 #endif
1131 }
1132
rtsx_delink_stage1(struct rtsx_chip * chip,int enter_L1,int stage3_cnt)1133 static void rtsx_delink_stage1(struct rtsx_chip *chip, int enter_L1,
1134 int stage3_cnt)
1135 {
1136 u8 val;
1137
1138 rtsx_set_stat(chip, RTSX_STAT_DELINK);
1139
1140 if (chip->asic_code && CHECK_PID(chip, 0x5208))
1141 rtsx_set_phy_reg_bit(chip, 0x1C, 2);
1142
1143 if (chip->card_exist)
1144 dev_dbg(rtsx_dev(chip), "False card inserted, do force delink\n");
1145 else
1146 dev_dbg(rtsx_dev(chip), "No card inserted, do delink\n");
1147
1148 if (enter_L1)
1149 rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03, 1);
1150
1151 if (chip->card_exist)
1152 val = 0x02;
1153 else
1154 val = 0x0A;
1155
1156 rtsx_write_register(chip, CHANGE_LINK_STATE, val, val);
1157
1158 if (enter_L1)
1159 rtsx_enter_L1(chip);
1160
1161 if (chip->card_exist)
1162 chip->auto_delink_cnt = stage3_cnt + 1;
1163 }
1164
rtsx_delink_stage(struct rtsx_chip * chip)1165 static void rtsx_delink_stage(struct rtsx_chip *chip)
1166 {
1167 int delink_stage1_cnt, delink_stage2_cnt, delink_stage3_cnt;
1168 int enter_L1;
1169
1170 if (!chip->auto_delink_en || !chip->auto_delink_allowed ||
1171 chip->card_ready || chip->card_ejected || chip->sd_io) {
1172 chip->auto_delink_cnt = 0;
1173 return;
1174 }
1175
1176 enter_L1 = chip->auto_delink_in_L1 &&
1177 (chip->aspm_l0s_l1_en || chip->ss_en);
1178
1179 delink_stage1_cnt = chip->delink_stage1_step;
1180 delink_stage2_cnt = delink_stage1_cnt + chip->delink_stage2_step;
1181 delink_stage3_cnt = delink_stage2_cnt + chip->delink_stage3_step;
1182
1183 if (chip->auto_delink_cnt > delink_stage3_cnt)
1184 return;
1185
1186 if (chip->auto_delink_cnt == delink_stage1_cnt)
1187 rtsx_delink_stage1(chip, enter_L1, delink_stage3_cnt);
1188
1189 if (chip->auto_delink_cnt == delink_stage2_cnt) {
1190 dev_dbg(rtsx_dev(chip), "Try to do force delink\n");
1191
1192 if (enter_L1)
1193 rtsx_exit_L1(chip);
1194
1195 if (chip->asic_code && CHECK_PID(chip, 0x5208))
1196 rtsx_set_phy_reg_bit(chip, 0x1C, 2);
1197
1198 rtsx_write_register(chip, CHANGE_LINK_STATE, 0x0A, 0x0A);
1199 }
1200
1201 chip->auto_delink_cnt++;
1202 }
1203
rtsx_polling_func(struct rtsx_chip * chip)1204 void rtsx_polling_func(struct rtsx_chip *chip)
1205 {
1206 if (rtsx_chk_stat(chip, RTSX_STAT_SUSPEND))
1207 return;
1208
1209 if (rtsx_chk_stat(chip, RTSX_STAT_DELINK))
1210 goto delink_stage;
1211
1212 if (chip->polling_config) {
1213 u8 val;
1214
1215 rtsx_read_config_byte(chip, 0, &val);
1216 }
1217
1218 if (rtsx_chk_stat(chip, RTSX_STAT_SS))
1219 return;
1220
1221 rtsx_manage_ocp(chip);
1222
1223 rtsx_manage_sd_lock(chip);
1224
1225 rtsx_init_cards(chip);
1226
1227 rtsx_manage_ss(chip);
1228
1229 rtsx_manage_aspm(chip);
1230
1231 rtsx_manage_idle(chip);
1232
1233 switch (rtsx_get_stat(chip)) {
1234 case RTSX_STAT_RUN:
1235 #if !defined(LED_AUTO_BLINK) && defined(REGULAR_BLINK)
1236 rtsx_blink_led(chip);
1237 #endif
1238 do_remaining_work(chip);
1239 break;
1240
1241 case RTSX_STAT_IDLE:
1242 if (chip->sd_io && !chip->sd_int)
1243 try_to_switch_sdio_ctrl(chip);
1244
1245 rtsx_enable_aspm(chip);
1246 break;
1247
1248 default:
1249 break;
1250 }
1251
1252 if (CHECK_LUN_MODE(chip, SD_MS_2LUN))
1253 rtsx_manage_2lun_mode(chip);
1254 else
1255 rtsx_manage_1lun_mode(chip);
1256
1257 delink_stage:
1258 rtsx_delink_stage(chip);
1259 }
1260
1261 /**
1262 * rtsx_stop_cmd - stop command transfer and DMA transfer
1263 * @chip: Realtek's card reader chip
1264 * @card: flash card type
1265 *
1266 * Stop command transfer and DMA transfer.
1267 * This function is called in error handler.
1268 */
rtsx_stop_cmd(struct rtsx_chip * chip,int card)1269 void rtsx_stop_cmd(struct rtsx_chip *chip, int card)
1270 {
1271 int i;
1272
1273 for (i = 0; i <= 8; i++) {
1274 int addr = RTSX_HCBAR + i * 4;
1275 u32 reg;
1276
1277 reg = rtsx_readl(chip, addr);
1278 dev_dbg(rtsx_dev(chip), "BAR (0x%02x): 0x%08x\n", addr, reg);
1279 }
1280 rtsx_writel(chip, RTSX_HCBCTLR, STOP_CMD);
1281 rtsx_writel(chip, RTSX_HDBCTLR, STOP_DMA);
1282
1283 for (i = 0; i < 16; i++) {
1284 u16 addr = 0xFE20 + (u16)i;
1285 u8 val;
1286
1287 rtsx_read_register(chip, addr, &val);
1288 dev_dbg(rtsx_dev(chip), "0x%04X: 0x%02x\n", addr, val);
1289 }
1290
1291 rtsx_write_register(chip, DMACTL, 0x80, 0x80);
1292 rtsx_write_register(chip, RBCTL, 0x80, 0x80);
1293 }
1294
1295 #define MAX_RW_REG_CNT 1024
1296
rtsx_write_register(struct rtsx_chip * chip,u16 addr,u8 mask,u8 data)1297 int rtsx_write_register(struct rtsx_chip *chip, u16 addr, u8 mask, u8 data)
1298 {
1299 int i;
1300 u32 val = 3 << 30;
1301
1302 val |= (u32)(addr & 0x3FFF) << 16;
1303 val |= (u32)mask << 8;
1304 val |= (u32)data;
1305
1306 rtsx_writel(chip, RTSX_HAIMR, val);
1307
1308 for (i = 0; i < MAX_RW_REG_CNT; i++) {
1309 val = rtsx_readl(chip, RTSX_HAIMR);
1310 if ((val & BIT(31)) == 0) {
1311 if (data != (u8)val)
1312 return STATUS_FAIL;
1313
1314 return STATUS_SUCCESS;
1315 }
1316 }
1317
1318 return STATUS_TIMEDOUT;
1319 }
1320
rtsx_read_register(struct rtsx_chip * chip,u16 addr,u8 * data)1321 int rtsx_read_register(struct rtsx_chip *chip, u16 addr, u8 *data)
1322 {
1323 u32 val = 2 << 30;
1324 int i;
1325
1326 if (data)
1327 *data = 0;
1328
1329 val |= (u32)(addr & 0x3FFF) << 16;
1330
1331 rtsx_writel(chip, RTSX_HAIMR, val);
1332
1333 for (i = 0; i < MAX_RW_REG_CNT; i++) {
1334 val = rtsx_readl(chip, RTSX_HAIMR);
1335 if ((val & BIT(31)) == 0)
1336 break;
1337 }
1338
1339 if (i >= MAX_RW_REG_CNT)
1340 return STATUS_TIMEDOUT;
1341
1342 if (data)
1343 *data = (u8)(val & 0xFF);
1344
1345 return STATUS_SUCCESS;
1346 }
1347
rtsx_write_cfg_dw(struct rtsx_chip * chip,u8 func_no,u16 addr,u32 mask,u32 val)1348 int rtsx_write_cfg_dw(struct rtsx_chip *chip, u8 func_no, u16 addr, u32 mask,
1349 u32 val)
1350 {
1351 int retval;
1352 u8 mode = 0, tmp;
1353 int i;
1354
1355 for (i = 0; i < 4; i++) {
1356 if (mask & 0xFF) {
1357 retval = rtsx_write_register(chip, CFGDATA0 + i,
1358 0xFF,
1359 (u8)(val & mask & 0xFF));
1360 if (retval)
1361 return retval;
1362 mode |= (1 << i);
1363 }
1364 mask >>= 8;
1365 val >>= 8;
1366 }
1367
1368 if (mode) {
1369 retval = rtsx_write_register(chip, CFGADDR0, 0xFF, (u8)addr);
1370 if (retval)
1371 return retval;
1372 retval = rtsx_write_register(chip, CFGADDR1, 0xFF,
1373 (u8)(addr >> 8));
1374 if (retval)
1375 return retval;
1376
1377 retval = rtsx_write_register(chip, CFGRWCTL, 0xFF,
1378 0x80 | mode |
1379 ((func_no & 0x03) << 4));
1380 if (retval)
1381 return retval;
1382
1383 for (i = 0; i < MAX_RW_REG_CNT; i++) {
1384 retval = rtsx_read_register(chip, CFGRWCTL, &tmp);
1385 if (retval)
1386 return retval;
1387 if ((tmp & 0x80) == 0)
1388 break;
1389 }
1390 }
1391
1392 return STATUS_SUCCESS;
1393 }
1394
rtsx_read_cfg_dw(struct rtsx_chip * chip,u8 func_no,u16 addr,u32 * val)1395 int rtsx_read_cfg_dw(struct rtsx_chip *chip, u8 func_no, u16 addr, u32 *val)
1396 {
1397 int retval;
1398 int i;
1399 u8 tmp;
1400 u32 data = 0;
1401
1402 retval = rtsx_write_register(chip, CFGADDR0, 0xFF, (u8)addr);
1403 if (retval)
1404 return retval;
1405 retval = rtsx_write_register(chip, CFGADDR1, 0xFF, (u8)(addr >> 8));
1406 if (retval)
1407 return retval;
1408 retval = rtsx_write_register(chip, CFGRWCTL, 0xFF,
1409 0x80 | ((func_no & 0x03) << 4));
1410 if (retval)
1411 return retval;
1412
1413 for (i = 0; i < MAX_RW_REG_CNT; i++) {
1414 retval = rtsx_read_register(chip, CFGRWCTL, &tmp);
1415 if (retval)
1416 return retval;
1417 if ((tmp & 0x80) == 0)
1418 break;
1419 }
1420
1421 for (i = 0; i < 4; i++) {
1422 retval = rtsx_read_register(chip, CFGDATA0 + i, &tmp);
1423 if (retval)
1424 return retval;
1425 data |= (u32)tmp << (i * 8);
1426 }
1427
1428 if (val)
1429 *val = data;
1430
1431 return STATUS_SUCCESS;
1432 }
1433
rtsx_write_cfg_seq(struct rtsx_chip * chip,u8 func,u16 addr,u8 * buf,int len)1434 int rtsx_write_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
1435 int len)
1436 {
1437 u32 *data, *mask;
1438 u16 offset = addr % 4;
1439 u16 aligned_addr = addr - offset;
1440 int dw_len, i, j;
1441 int retval;
1442
1443 if (!buf)
1444 return STATUS_NOMEM;
1445
1446 if ((len + offset) % 4)
1447 dw_len = (len + offset) / 4 + 1;
1448 else
1449 dw_len = (len + offset) / 4;
1450
1451 dev_dbg(rtsx_dev(chip), "dw_len = %d\n", dw_len);
1452
1453 data = vzalloc(array_size(dw_len, 4));
1454 if (!data)
1455 return STATUS_NOMEM;
1456
1457 mask = vzalloc(array_size(dw_len, 4));
1458 if (!mask) {
1459 vfree(data);
1460 return STATUS_NOMEM;
1461 }
1462
1463 j = 0;
1464 for (i = 0; i < len; i++) {
1465 mask[j] |= 0xFF << (offset * 8);
1466 data[j] |= buf[i] << (offset * 8);
1467 if (++offset == 4) {
1468 j++;
1469 offset = 0;
1470 }
1471 }
1472
1473 print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, mask,
1474 dw_len * 4);
1475 print_hex_dump_bytes(KBUILD_MODNAME ": ", DUMP_PREFIX_NONE, data,
1476 dw_len * 4);
1477
1478 for (i = 0; i < dw_len; i++) {
1479 retval = rtsx_write_cfg_dw(chip, func, aligned_addr + i * 4,
1480 mask[i], data[i]);
1481 if (retval != STATUS_SUCCESS) {
1482 vfree(data);
1483 vfree(mask);
1484 return STATUS_FAIL;
1485 }
1486 }
1487
1488 vfree(data);
1489 vfree(mask);
1490
1491 return STATUS_SUCCESS;
1492 }
1493
rtsx_read_cfg_seq(struct rtsx_chip * chip,u8 func,u16 addr,u8 * buf,int len)1494 int rtsx_read_cfg_seq(struct rtsx_chip *chip, u8 func, u16 addr, u8 *buf,
1495 int len)
1496 {
1497 u32 *data;
1498 u16 offset = addr % 4;
1499 u16 aligned_addr = addr - offset;
1500 int dw_len, i, j;
1501 int retval;
1502
1503 if ((len + offset) % 4)
1504 dw_len = (len + offset) / 4 + 1;
1505 else
1506 dw_len = (len + offset) / 4;
1507
1508 dev_dbg(rtsx_dev(chip), "dw_len = %d\n", dw_len);
1509
1510 data = vmalloc(array_size(dw_len, 4));
1511 if (!data)
1512 return STATUS_NOMEM;
1513
1514 for (i = 0; i < dw_len; i++) {
1515 retval = rtsx_read_cfg_dw(chip, func, aligned_addr + i * 4,
1516 data + i);
1517 if (retval != STATUS_SUCCESS) {
1518 vfree(data);
1519 return STATUS_FAIL;
1520 }
1521 }
1522
1523 if (buf) {
1524 j = 0;
1525
1526 for (i = 0; i < len; i++) {
1527 buf[i] = (u8)(data[j] >> (offset * 8));
1528 if (++offset == 4) {
1529 j++;
1530 offset = 0;
1531 }
1532 }
1533 }
1534
1535 vfree(data);
1536
1537 return STATUS_SUCCESS;
1538 }
1539
rtsx_write_phy_register(struct rtsx_chip * chip,u8 addr,u16 val)1540 int rtsx_write_phy_register(struct rtsx_chip *chip, u8 addr, u16 val)
1541 {
1542 int retval;
1543 bool finished = false;
1544 int i;
1545 u8 tmp;
1546
1547 retval = rtsx_write_register(chip, PHYDATA0, 0xFF, (u8)val);
1548 if (retval)
1549 return retval;
1550 retval = rtsx_write_register(chip, PHYDATA1, 0xFF, (u8)(val >> 8));
1551 if (retval)
1552 return retval;
1553 retval = rtsx_write_register(chip, PHYADDR, 0xFF, addr);
1554 if (retval)
1555 return retval;
1556 retval = rtsx_write_register(chip, PHYRWCTL, 0xFF, 0x81);
1557 if (retval)
1558 return retval;
1559
1560 for (i = 0; i < 100000; i++) {
1561 retval = rtsx_read_register(chip, PHYRWCTL, &tmp);
1562 if (retval)
1563 return retval;
1564 if (!(tmp & 0x80)) {
1565 finished = true;
1566 break;
1567 }
1568 }
1569
1570 if (!finished)
1571 return STATUS_FAIL;
1572
1573 return STATUS_SUCCESS;
1574 }
1575
rtsx_read_phy_register(struct rtsx_chip * chip,u8 addr,u16 * val)1576 int rtsx_read_phy_register(struct rtsx_chip *chip, u8 addr, u16 *val)
1577 {
1578 int retval;
1579 bool finished = false;
1580 int i;
1581 u16 data = 0;
1582 u8 tmp;
1583
1584 retval = rtsx_write_register(chip, PHYADDR, 0xFF, addr);
1585 if (retval)
1586 return retval;
1587 retval = rtsx_write_register(chip, PHYRWCTL, 0xFF, 0x80);
1588 if (retval)
1589 return retval;
1590
1591 for (i = 0; i < 100000; i++) {
1592 retval = rtsx_read_register(chip, PHYRWCTL, &tmp);
1593 if (retval)
1594 return retval;
1595 if (!(tmp & 0x80)) {
1596 finished = true;
1597 break;
1598 }
1599 }
1600
1601 if (!finished)
1602 return STATUS_FAIL;
1603
1604 retval = rtsx_read_register(chip, PHYDATA0, &tmp);
1605 if (retval)
1606 return retval;
1607 data = tmp;
1608 retval = rtsx_read_register(chip, PHYDATA1, &tmp);
1609 if (retval)
1610 return retval;
1611 data |= (u16)tmp << 8;
1612
1613 if (val)
1614 *val = data;
1615
1616 return STATUS_SUCCESS;
1617 }
1618
rtsx_read_efuse(struct rtsx_chip * chip,u8 addr,u8 * val)1619 int rtsx_read_efuse(struct rtsx_chip *chip, u8 addr, u8 *val)
1620 {
1621 int retval;
1622 int i;
1623 u8 data = 0;
1624
1625 retval = rtsx_write_register(chip, EFUSE_CTRL, 0xFF, 0x80 | addr);
1626 if (retval)
1627 return retval;
1628
1629 for (i = 0; i < 100; i++) {
1630 retval = rtsx_read_register(chip, EFUSE_CTRL, &data);
1631 if (retval)
1632 return retval;
1633 if (!(data & 0x80))
1634 break;
1635 udelay(1);
1636 }
1637
1638 if (data & 0x80)
1639 return STATUS_TIMEDOUT;
1640
1641 retval = rtsx_read_register(chip, EFUSE_DATA, &data);
1642 if (retval)
1643 return retval;
1644 if (val)
1645 *val = data;
1646
1647 return STATUS_SUCCESS;
1648 }
1649
rtsx_write_efuse(struct rtsx_chip * chip,u8 addr,u8 val)1650 int rtsx_write_efuse(struct rtsx_chip *chip, u8 addr, u8 val)
1651 {
1652 int retval;
1653 int i, j;
1654 u8 data = 0, tmp = 0xFF;
1655
1656 for (i = 0; i < 8; i++) {
1657 if (val & (u8)(1 << i))
1658 continue;
1659
1660 tmp &= (~(u8)(1 << i));
1661 dev_dbg(rtsx_dev(chip), "Write 0x%x to 0x%x\n", tmp, addr);
1662
1663 retval = rtsx_write_register(chip, EFUSE_DATA, 0xFF, tmp);
1664 if (retval)
1665 return retval;
1666 retval = rtsx_write_register(chip, EFUSE_CTRL, 0xFF,
1667 0xA0 | addr);
1668 if (retval)
1669 return retval;
1670
1671 for (j = 0; j < 100; j++) {
1672 retval = rtsx_read_register(chip, EFUSE_CTRL, &data);
1673 if (retval)
1674 return retval;
1675 if (!(data & 0x80))
1676 break;
1677 wait_timeout(3);
1678 }
1679
1680 if (data & 0x80)
1681 return STATUS_TIMEDOUT;
1682
1683 wait_timeout(5);
1684 }
1685
1686 return STATUS_SUCCESS;
1687 }
1688
rtsx_clr_phy_reg_bit(struct rtsx_chip * chip,u8 reg,u8 bit)1689 int rtsx_clr_phy_reg_bit(struct rtsx_chip *chip, u8 reg, u8 bit)
1690 {
1691 int retval;
1692 u16 value;
1693
1694 retval = rtsx_read_phy_register(chip, reg, &value);
1695 if (retval != STATUS_SUCCESS)
1696 return STATUS_FAIL;
1697
1698 if (value & (1 << bit)) {
1699 value &= ~(1 << bit);
1700 retval = rtsx_write_phy_register(chip, reg, value);
1701 if (retval != STATUS_SUCCESS)
1702 return STATUS_FAIL;
1703 }
1704
1705 return STATUS_SUCCESS;
1706 }
1707
rtsx_set_phy_reg_bit(struct rtsx_chip * chip,u8 reg,u8 bit)1708 int rtsx_set_phy_reg_bit(struct rtsx_chip *chip, u8 reg, u8 bit)
1709 {
1710 int retval;
1711 u16 value;
1712
1713 retval = rtsx_read_phy_register(chip, reg, &value);
1714 if (retval != STATUS_SUCCESS)
1715 return STATUS_FAIL;
1716
1717 if ((value & (1 << bit)) == 0) {
1718 value |= (1 << bit);
1719 retval = rtsx_write_phy_register(chip, reg, value);
1720 if (retval != STATUS_SUCCESS)
1721 return STATUS_FAIL;
1722 }
1723
1724 return STATUS_SUCCESS;
1725 }
1726
rtsx_handle_pm_dstate(struct rtsx_chip * chip,u8 dstate)1727 static void rtsx_handle_pm_dstate(struct rtsx_chip *chip, u8 dstate)
1728 {
1729 u32 ultmp;
1730
1731 dev_dbg(rtsx_dev(chip), "%04x set pm_dstate to %d\n",
1732 chip->product_id, dstate);
1733
1734 if (CHK_SDIO_EXIST(chip)) {
1735 u8 func_no;
1736
1737 if (CHECK_PID(chip, 0x5288))
1738 func_no = 2;
1739 else
1740 func_no = 1;
1741
1742 rtsx_read_cfg_dw(chip, func_no, 0x84, &ultmp);
1743 dev_dbg(rtsx_dev(chip), "pm_dstate of function %d: 0x%x\n",
1744 (int)func_no, ultmp);
1745 rtsx_write_cfg_dw(chip, func_no, 0x84, 0xFF, dstate);
1746 }
1747
1748 rtsx_write_config_byte(chip, 0x44, dstate);
1749 rtsx_write_config_byte(chip, 0x45, 0);
1750 }
1751
rtsx_enter_L1(struct rtsx_chip * chip)1752 void rtsx_enter_L1(struct rtsx_chip *chip)
1753 {
1754 rtsx_handle_pm_dstate(chip, 2);
1755 }
1756
rtsx_exit_L1(struct rtsx_chip * chip)1757 void rtsx_exit_L1(struct rtsx_chip *chip)
1758 {
1759 rtsx_write_config_byte(chip, 0x44, 0);
1760 rtsx_write_config_byte(chip, 0x45, 0);
1761 }
1762
rtsx_enter_ss(struct rtsx_chip * chip)1763 void rtsx_enter_ss(struct rtsx_chip *chip)
1764 {
1765 dev_dbg(rtsx_dev(chip), "Enter Selective Suspend State!\n");
1766
1767 rtsx_write_register(chip, IRQSTAT0, LINK_RDY_INT, LINK_RDY_INT);
1768
1769 if (chip->power_down_in_ss) {
1770 rtsx_power_off_card(chip);
1771 rtsx_force_power_down(chip, SSC_PDCTL | OC_PDCTL);
1772 }
1773
1774 if (CHK_SDIO_EXIST(chip))
1775 rtsx_write_cfg_dw(chip, CHECK_PID(chip, 0x5288) ? 2 : 1,
1776 0xC0, 0xFF00, 0x0100);
1777
1778 if (chip->auto_delink_en) {
1779 rtsx_write_register(chip, HOST_SLEEP_STATE, 0x01, 0x01);
1780 } else {
1781 if (!chip->phy_debug_mode) {
1782 u32 tmp;
1783
1784 tmp = rtsx_readl(chip, RTSX_BIER);
1785 tmp |= CARD_INT;
1786 rtsx_writel(chip, RTSX_BIER, tmp);
1787 }
1788
1789 rtsx_write_register(chip, CHANGE_LINK_STATE, 0x02, 0);
1790 }
1791
1792 rtsx_enter_L1(chip);
1793
1794 RTSX_CLR_DELINK(chip);
1795 rtsx_set_stat(chip, RTSX_STAT_SS);
1796 }
1797
rtsx_exit_ss(struct rtsx_chip * chip)1798 void rtsx_exit_ss(struct rtsx_chip *chip)
1799 {
1800 dev_dbg(rtsx_dev(chip), "Exit Selective Suspend State!\n");
1801
1802 rtsx_exit_L1(chip);
1803
1804 if (chip->power_down_in_ss) {
1805 rtsx_force_power_on(chip, SSC_PDCTL | OC_PDCTL);
1806 udelay(1000);
1807 }
1808
1809 if (RTSX_TST_DELINK(chip)) {
1810 chip->need_reinit = SD_CARD | MS_CARD | XD_CARD;
1811 rtsx_reinit_cards(chip, 1);
1812 RTSX_CLR_DELINK(chip);
1813 } else if (chip->power_down_in_ss) {
1814 chip->need_reinit = SD_CARD | MS_CARD | XD_CARD;
1815 rtsx_reinit_cards(chip, 0);
1816 }
1817 }
1818
rtsx_pre_handle_interrupt(struct rtsx_chip * chip)1819 int rtsx_pre_handle_interrupt(struct rtsx_chip *chip)
1820 {
1821 u32 status, int_enable;
1822 bool exit_ss = false;
1823 #ifdef SUPPORT_OCP
1824 u32 ocp_int = 0;
1825
1826 ocp_int = OC_INT;
1827 #endif
1828
1829 if (chip->ss_en) {
1830 chip->ss_counter = 0;
1831 if (rtsx_get_stat(chip) == RTSX_STAT_SS) {
1832 exit_ss = true;
1833 rtsx_exit_L1(chip);
1834 rtsx_set_stat(chip, RTSX_STAT_RUN);
1835 }
1836 }
1837
1838 int_enable = rtsx_readl(chip, RTSX_BIER);
1839 chip->int_reg = rtsx_readl(chip, RTSX_BIPR);
1840
1841 if (((chip->int_reg & int_enable) == 0) ||
1842 (chip->int_reg == 0xFFFFFFFF))
1843 return STATUS_FAIL;
1844
1845 status = chip->int_reg &= (int_enable | 0x7FFFFF);
1846
1847 if (status & CARD_INT) {
1848 chip->auto_delink_cnt = 0;
1849
1850 if (status & SD_INT) {
1851 if (status & SD_EXIST) {
1852 set_bit(SD_NR, &chip->need_reset);
1853 } else {
1854 set_bit(SD_NR, &chip->need_release);
1855 chip->sd_reset_counter = 0;
1856 chip->sd_show_cnt = 0;
1857 clear_bit(SD_NR, &chip->need_reset);
1858 }
1859 } else {
1860 /*
1861 * If multi-luns, it's possible that
1862 * when plugging/unplugging one card
1863 * there is another card which still
1864 * exists in the slot. In this case,
1865 * all existed cards should be reset.
1866 */
1867 if (exit_ss && (status & SD_EXIST))
1868 set_bit(SD_NR, &chip->need_reinit);
1869 }
1870 if (!CHECK_PID(chip, 0x5288) || CHECK_BARO_PKG(chip, QFN)) {
1871 if (status & XD_INT) {
1872 if (status & XD_EXIST) {
1873 set_bit(XD_NR, &chip->need_reset);
1874 } else {
1875 set_bit(XD_NR, &chip->need_release);
1876 chip->xd_reset_counter = 0;
1877 chip->xd_show_cnt = 0;
1878 clear_bit(XD_NR, &chip->need_reset);
1879 }
1880 } else {
1881 if (exit_ss && (status & XD_EXIST))
1882 set_bit(XD_NR, &chip->need_reinit);
1883 }
1884 }
1885 if (status & MS_INT) {
1886 if (status & MS_EXIST) {
1887 set_bit(MS_NR, &chip->need_reset);
1888 } else {
1889 set_bit(MS_NR, &chip->need_release);
1890 chip->ms_reset_counter = 0;
1891 chip->ms_show_cnt = 0;
1892 clear_bit(MS_NR, &chip->need_reset);
1893 }
1894 } else {
1895 if (exit_ss && (status & MS_EXIST))
1896 set_bit(MS_NR, &chip->need_reinit);
1897 }
1898 }
1899
1900 #ifdef SUPPORT_OCP
1901 chip->ocp_int = ocp_int & status;
1902 #endif
1903
1904 if (chip->sd_io && (chip->int_reg & DATA_DONE_INT))
1905 chip->int_reg &= ~(u32)DATA_DONE_INT;
1906
1907 return STATUS_SUCCESS;
1908 }
1909
rtsx_do_before_power_down(struct rtsx_chip * chip,int pm_stat)1910 void rtsx_do_before_power_down(struct rtsx_chip *chip, int pm_stat)
1911 {
1912 int retval;
1913
1914 dev_dbg(rtsx_dev(chip), "%s, pm_stat = %d\n", __func__, pm_stat);
1915
1916 rtsx_set_stat(chip, RTSX_STAT_SUSPEND);
1917
1918 retval = rtsx_force_power_on(chip, SSC_PDCTL);
1919 if (retval != STATUS_SUCCESS)
1920 return;
1921
1922 rtsx_release_cards(chip);
1923 rtsx_disable_bus_int(chip);
1924 turn_off_led(chip, LED_GPIO);
1925
1926 #ifdef HW_AUTO_SWITCH_SD_BUS
1927 if (chip->sd_io) {
1928 chip->sdio_in_charge = 1;
1929 if (CHECK_PID(chip, 0x5208)) {
1930 rtsx_write_register(chip, TLPTISTAT, 0x08, 0x08);
1931 /* Enable sdio_bus_auto_switch */
1932 rtsx_write_register(chip, 0xFE70, 0x80, 0x80);
1933 } else if (CHECK_PID(chip, 0x5288)) {
1934 rtsx_write_register(chip, TLPTISTAT, 0x08, 0x08);
1935 /* Enable sdio_bus_auto_switch */
1936 rtsx_write_register(chip, 0xFE5A, 0x08, 0x08);
1937 }
1938 }
1939 #endif
1940
1941 if (CHECK_PID(chip, 0x5208) && (chip->ic_version >= IC_VER_D)) {
1942 /* u_force_clkreq_0 */
1943 rtsx_write_register(chip, PETXCFG, 0x08, 0x08);
1944 }
1945
1946 if (pm_stat == PM_S1) {
1947 dev_dbg(rtsx_dev(chip), "Host enter S1\n");
1948 rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03,
1949 HOST_ENTER_S1);
1950 } else if (pm_stat == PM_S3) {
1951 if (chip->s3_pwr_off_delay > 0)
1952 wait_timeout(chip->s3_pwr_off_delay);
1953
1954 dev_dbg(rtsx_dev(chip), "Host enter S3\n");
1955 rtsx_write_register(chip, HOST_SLEEP_STATE, 0x03,
1956 HOST_ENTER_S3);
1957 }
1958
1959 if (chip->do_delink_before_power_down && chip->auto_delink_en)
1960 rtsx_write_register(chip, CHANGE_LINK_STATE, 0x02, 2);
1961
1962 rtsx_force_power_down(chip, SSC_PDCTL | OC_PDCTL);
1963
1964 chip->cur_clk = 0;
1965 chip->cur_card = 0;
1966 chip->card_exist = 0;
1967 }
1968
rtsx_enable_aspm(struct rtsx_chip * chip)1969 void rtsx_enable_aspm(struct rtsx_chip *chip)
1970 {
1971 if (chip->aspm_l0s_l1_en && chip->dynamic_aspm && !chip->aspm_enabled) {
1972 dev_dbg(rtsx_dev(chip), "Try to enable ASPM\n");
1973 chip->aspm_enabled = 1;
1974
1975 if (chip->asic_code && CHECK_PID(chip, 0x5208))
1976 rtsx_write_phy_register(chip, 0x07, 0);
1977 if (CHECK_PID(chip, 0x5208)) {
1978 rtsx_write_register(chip, ASPM_FORCE_CTL, 0xF3,
1979 0x30 | chip->aspm_level[0]);
1980 } else {
1981 rtsx_write_config_byte(chip, LCTLR,
1982 chip->aspm_l0s_l1_en);
1983 }
1984
1985 if (CHK_SDIO_EXIST(chip)) {
1986 u16 val = chip->aspm_l0s_l1_en | 0x0100;
1987
1988 rtsx_write_cfg_dw(chip, CHECK_PID(chip, 0x5288) ? 2 : 1,
1989 0xC0, 0xFFF, val);
1990 }
1991 }
1992 }
1993
rtsx_disable_aspm(struct rtsx_chip * chip)1994 void rtsx_disable_aspm(struct rtsx_chip *chip)
1995 {
1996 if (CHECK_PID(chip, 0x5208))
1997 rtsx_monitor_aspm_config(chip);
1998
1999 if (chip->aspm_l0s_l1_en && chip->dynamic_aspm && chip->aspm_enabled) {
2000 dev_dbg(rtsx_dev(chip), "Try to disable ASPM\n");
2001 chip->aspm_enabled = 0;
2002
2003 if (chip->asic_code && CHECK_PID(chip, 0x5208))
2004 rtsx_write_phy_register(chip, 0x07, 0x0129);
2005 if (CHECK_PID(chip, 0x5208))
2006 rtsx_write_register(chip, ASPM_FORCE_CTL,
2007 0xF3, 0x30);
2008 else
2009 rtsx_write_config_byte(chip, LCTLR, 0x00);
2010
2011 wait_timeout(1);
2012 }
2013 }
2014
rtsx_read_ppbuf(struct rtsx_chip * chip,u8 * buf,int buf_len)2015 int rtsx_read_ppbuf(struct rtsx_chip *chip, u8 *buf, int buf_len)
2016 {
2017 int retval;
2018 int i, j;
2019 u16 reg_addr;
2020 u8 *ptr;
2021
2022 if (!buf)
2023 return STATUS_ERROR;
2024
2025 ptr = buf;
2026 reg_addr = PPBUF_BASE2;
2027 for (i = 0; i < buf_len / 256; i++) {
2028 rtsx_init_cmd(chip);
2029
2030 for (j = 0; j < 256; j++)
2031 rtsx_add_cmd(chip, READ_REG_CMD, reg_addr++, 0, 0);
2032
2033 retval = rtsx_send_cmd(chip, 0, 250);
2034 if (retval < 0)
2035 return STATUS_FAIL;
2036
2037 memcpy(ptr, rtsx_get_cmd_data(chip), 256);
2038 ptr += 256;
2039 }
2040
2041 if (buf_len % 256) {
2042 rtsx_init_cmd(chip);
2043
2044 for (j = 0; j < buf_len % 256; j++)
2045 rtsx_add_cmd(chip, READ_REG_CMD, reg_addr++, 0, 0);
2046
2047 retval = rtsx_send_cmd(chip, 0, 250);
2048 if (retval < 0)
2049 return STATUS_FAIL;
2050 }
2051
2052 memcpy(ptr, rtsx_get_cmd_data(chip), buf_len % 256);
2053
2054 return STATUS_SUCCESS;
2055 }
2056
rtsx_write_ppbuf(struct rtsx_chip * chip,u8 * buf,int buf_len)2057 int rtsx_write_ppbuf(struct rtsx_chip *chip, u8 *buf, int buf_len)
2058 {
2059 int retval;
2060 int i, j;
2061 u16 reg_addr;
2062 u8 *ptr;
2063
2064 if (!buf)
2065 return STATUS_ERROR;
2066
2067 ptr = buf;
2068 reg_addr = PPBUF_BASE2;
2069 for (i = 0; i < buf_len / 256; i++) {
2070 rtsx_init_cmd(chip);
2071
2072 for (j = 0; j < 256; j++) {
2073 rtsx_add_cmd(chip, WRITE_REG_CMD, reg_addr++, 0xFF,
2074 *ptr);
2075 ptr++;
2076 }
2077
2078 retval = rtsx_send_cmd(chip, 0, 250);
2079 if (retval < 0)
2080 return STATUS_FAIL;
2081 }
2082
2083 if (buf_len % 256) {
2084 rtsx_init_cmd(chip);
2085
2086 for (j = 0; j < buf_len % 256; j++) {
2087 rtsx_add_cmd(chip, WRITE_REG_CMD, reg_addr++, 0xFF,
2088 *ptr);
2089 ptr++;
2090 }
2091
2092 retval = rtsx_send_cmd(chip, 0, 250);
2093 if (retval < 0)
2094 return STATUS_FAIL;
2095 }
2096
2097 return STATUS_SUCCESS;
2098 }
2099
rtsx_check_chip_exist(struct rtsx_chip * chip)2100 int rtsx_check_chip_exist(struct rtsx_chip *chip)
2101 {
2102 if (rtsx_readl(chip, 0) == 0xFFFFFFFF)
2103 return STATUS_FAIL;
2104
2105 return STATUS_SUCCESS;
2106 }
2107
rtsx_force_power_on(struct rtsx_chip * chip,u8 ctl)2108 int rtsx_force_power_on(struct rtsx_chip *chip, u8 ctl)
2109 {
2110 int retval;
2111 u8 mask = 0;
2112
2113 if (ctl & SSC_PDCTL)
2114 mask |= SSC_POWER_DOWN;
2115
2116 #ifdef SUPPORT_OCP
2117 if (ctl & OC_PDCTL) {
2118 mask |= SD_OC_POWER_DOWN;
2119 if (CHECK_LUN_MODE(chip, SD_MS_2LUN))
2120 mask |= MS_OC_POWER_DOWN;
2121 }
2122 #endif
2123
2124 if (mask) {
2125 retval = rtsx_write_register(chip, FPDCTL, mask, 0);
2126 if (retval != STATUS_SUCCESS)
2127 return STATUS_FAIL;
2128
2129 if (CHECK_PID(chip, 0x5288))
2130 wait_timeout(200);
2131 }
2132
2133 return STATUS_SUCCESS;
2134 }
2135
rtsx_force_power_down(struct rtsx_chip * chip,u8 ctl)2136 int rtsx_force_power_down(struct rtsx_chip *chip, u8 ctl)
2137 {
2138 int retval;
2139 u8 mask = 0, val = 0;
2140
2141 if (ctl & SSC_PDCTL)
2142 mask |= SSC_POWER_DOWN;
2143
2144 #ifdef SUPPORT_OCP
2145 if (ctl & OC_PDCTL) {
2146 mask |= SD_OC_POWER_DOWN;
2147 if (CHECK_LUN_MODE(chip, SD_MS_2LUN))
2148 mask |= MS_OC_POWER_DOWN;
2149 }
2150 #endif
2151
2152 if (mask) {
2153 val = mask;
2154 retval = rtsx_write_register(chip, FPDCTL, mask, val);
2155 if (retval != STATUS_SUCCESS)
2156 return STATUS_FAIL;
2157 }
2158
2159 return STATUS_SUCCESS;
2160 }
2161
