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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Driver for Realtek PCI-Express card reader
3 *
4 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
5 *
6 * Author:
7 * Wei WANG <wei_wang@realsil.com.cn>
8 * Roger Tseng <rogerable@realtek.com>
9 */
10
11#include <linux/module.h>
12#include <linux/bitops.h>
13#include <linux/delay.h>
14#include <linux/rtsx_pci.h>
15
16#include "rtsx_pcr.h"
17
18static u8 rtl8411_get_ic_version(struct rtsx_pcr *pcr)
19{
20 u8 val;
21
22 rtsx_pci_read_register(pcr, SYS_VER, &val);
23 return val & 0x0F;
24}
25
26static int rtl8411b_is_qfn48(struct rtsx_pcr *pcr)
27{
28 u8 val = 0;
29
30 rtsx_pci_read_register(pcr, RTL8411B_PACKAGE_MODE, &val);
31
32 if (val & 0x2)
33 return 1;
34 else
35 return 0;
36}
37
38static void rtl8411_fetch_vendor_settings(struct rtsx_pcr *pcr)
39{
40 struct pci_dev *pdev = pcr->pci;
41 u32 reg1 = 0;
42 u8 reg3 = 0;
43
44 pci_read_config_dword(pdev, PCR_SETTING_REG1, ®1);
45 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg1);
46
47 if (!rtsx_vendor_setting_valid(reg1))
48 return;
49
50 pcr->aspm_en = rtsx_reg_to_aspm(reg1);
51 pcr->sd30_drive_sel_1v8 =
52 map_sd_drive(rtsx_reg_to_sd30_drive_sel_1v8(reg1));
53 pcr->card_drive_sel &= 0x3F;
54 pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg1);
55
56 pci_read_config_byte(pdev, PCR_SETTING_REG3, ®3);
57 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG3, reg3);
58 pcr->sd30_drive_sel_3v3 = rtl8411_reg_to_sd30_drive_sel_3v3(reg3);
59}
60
61static void rtl8411b_fetch_vendor_settings(struct rtsx_pcr *pcr)
62{
63 struct pci_dev *pdev = pcr->pci;
64 u32 reg = 0;
65
66 pci_read_config_dword(pdev, PCR_SETTING_REG1, ®);
67 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
68
69 if (!rtsx_vendor_setting_valid(reg))
70 return;
71
72 pcr->aspm_en = rtsx_reg_to_aspm(reg);
73 pcr->sd30_drive_sel_1v8 =
74 map_sd_drive(rtsx_reg_to_sd30_drive_sel_1v8(reg));
75 pcr->sd30_drive_sel_3v3 =
76 map_sd_drive(rtl8411b_reg_to_sd30_drive_sel_3v3(reg));
77}
78
79static void rtl8411_force_power_down(struct rtsx_pcr *pcr, u8 pm_state, bool runtime)
80{
81 rtsx_pci_write_register(pcr, FPDCTL, 0x07, 0x07);
82}
83
84static int rtl8411_extra_init_hw(struct rtsx_pcr *pcr)
85{
86 rtsx_pci_init_cmd(pcr);
87
88 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL,
89 0xFF, pcr->sd30_drive_sel_3v3);
90 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
91 CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
92
93 return rtsx_pci_send_cmd(pcr, 100);
94}
95
96static int rtl8411b_extra_init_hw(struct rtsx_pcr *pcr)
97{
98 rtsx_pci_init_cmd(pcr);
99
100 if (rtl8411b_is_qfn48(pcr))
101 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
102 CARD_PULL_CTL3, 0xFF, 0xF5);
103 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL,
104 0xFF, pcr->sd30_drive_sel_3v3);
105 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
106 CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
107 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, FUNC_FORCE_CTL,
108 0x06, 0x00);
109
110 return rtsx_pci_send_cmd(pcr, 100);
111}
112
113static int rtl8411_turn_on_led(struct rtsx_pcr *pcr)
114{
115 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00);
116}
117
118static int rtl8411_turn_off_led(struct rtsx_pcr *pcr)
119{
120 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01);
121}
122
123static int rtl8411_enable_auto_blink(struct rtsx_pcr *pcr)
124{
125 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
126}
127
128static int rtl8411_disable_auto_blink(struct rtsx_pcr *pcr)
129{
130 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
131}
132
133static int rtl8411_card_power_on(struct rtsx_pcr *pcr, int card)
134{
135 int err;
136
137 rtsx_pci_init_cmd(pcr);
138 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
139 BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
140 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_CTL,
141 BPP_LDO_POWB, BPP_LDO_SUSPEND);
142 err = rtsx_pci_send_cmd(pcr, 100);
143 if (err < 0)
144 return err;
145
146 /* To avoid too large in-rush current */
147 udelay(150);
148
149 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
150 BPP_POWER_MASK, BPP_POWER_10_PERCENT_ON);
151 if (err < 0)
152 return err;
153
154 udelay(150);
155
156 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
157 BPP_POWER_MASK, BPP_POWER_15_PERCENT_ON);
158 if (err < 0)
159 return err;
160
161 udelay(150);
162
163 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
164 BPP_POWER_MASK, BPP_POWER_ON);
165 if (err < 0)
166 return err;
167
168 return rtsx_pci_write_register(pcr, LDO_CTL, BPP_LDO_POWB, BPP_LDO_ON);
169}
170
171static int rtl8411_card_power_off(struct rtsx_pcr *pcr, int card)
172{
173 int err;
174
175 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
176 BPP_POWER_MASK, BPP_POWER_OFF);
177 if (err < 0)
178 return err;
179
180 return rtsx_pci_write_register(pcr, LDO_CTL,
181 BPP_LDO_POWB, BPP_LDO_SUSPEND);
182}
183
184static int rtl8411_do_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage,
185 int bpp_tuned18_shift, int bpp_asic_1v8)
186{
187 u8 mask, val;
188 int err;
189
190 mask = (BPP_REG_TUNED18 << bpp_tuned18_shift) | BPP_PAD_MASK;
191 if (voltage == OUTPUT_3V3) {
192 err = rtsx_pci_write_register(pcr,
193 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3);
194 if (err < 0)
195 return err;
196 val = (BPP_ASIC_3V3 << bpp_tuned18_shift) | BPP_PAD_3V3;
197 } else if (voltage == OUTPUT_1V8) {
198 err = rtsx_pci_write_register(pcr,
199 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8);
200 if (err < 0)
201 return err;
202 val = (bpp_asic_1v8 << bpp_tuned18_shift) | BPP_PAD_1V8;
203 } else {
204 return -EINVAL;
205 }
206
207 return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
208}
209
210static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
211{
212 return rtl8411_do_switch_output_voltage(pcr, voltage,
213 BPP_TUNED18_SHIFT_8411, BPP_ASIC_1V8);
214}
215
216static int rtl8402_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
217{
218 return rtl8411_do_switch_output_voltage(pcr, voltage,
219 BPP_TUNED18_SHIFT_8402, BPP_ASIC_2V0);
220}
221
222static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr *pcr)
223{
224 unsigned int card_exist;
225
226 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
227 card_exist &= CARD_EXIST;
228 if (!card_exist) {
229 /* Enable card CD */
230 rtsx_pci_write_register(pcr, CD_PAD_CTL,
231 CD_DISABLE_MASK, CD_ENABLE);
232 /* Enable card interrupt */
233 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x00);
234 return 0;
235 }
236
237 if (hweight32(card_exist) > 1) {
238 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
239 BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
240 msleep(100);
241
242 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
243 if (card_exist & MS_EXIST)
244 card_exist = MS_EXIST;
245 else if (card_exist & SD_EXIST)
246 card_exist = SD_EXIST;
247 else
248 card_exist = 0;
249
250 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
251 BPP_POWER_MASK, BPP_POWER_OFF);
252
253 pcr_dbg(pcr, "After CD deglitch, card_exist = 0x%x\n",
254 card_exist);
255 }
256
257 if (card_exist & MS_EXIST) {
258 /* Disable SD interrupt */
259 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x40);
260 rtsx_pci_write_register(pcr, CD_PAD_CTL,
261 CD_DISABLE_MASK, MS_CD_EN_ONLY);
262 } else if (card_exist & SD_EXIST) {
263 /* Disable MS interrupt */
264 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x80);
265 rtsx_pci_write_register(pcr, CD_PAD_CTL,
266 CD_DISABLE_MASK, SD_CD_EN_ONLY);
267 }
268
269 return card_exist;
270}
271
272static int rtl8411_conv_clk_and_div_n(int input, int dir)
273{
274 int output;
275
276 if (dir == CLK_TO_DIV_N)
277 output = input * 4 / 5 - 2;
278 else
279 output = (input + 2) * 5 / 4;
280
281 return output;
282}
283
284static const struct pcr_ops rtl8411_pcr_ops = {
285 .fetch_vendor_settings = rtl8411_fetch_vendor_settings,
286 .extra_init_hw = rtl8411_extra_init_hw,
287 .optimize_phy = NULL,
288 .turn_on_led = rtl8411_turn_on_led,
289 .turn_off_led = rtl8411_turn_off_led,
290 .enable_auto_blink = rtl8411_enable_auto_blink,
291 .disable_auto_blink = rtl8411_disable_auto_blink,
292 .card_power_on = rtl8411_card_power_on,
293 .card_power_off = rtl8411_card_power_off,
294 .switch_output_voltage = rtl8411_switch_output_voltage,
295 .cd_deglitch = rtl8411_cd_deglitch,
296 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
297 .force_power_down = rtl8411_force_power_down,
298};
299
300static const struct pcr_ops rtl8402_pcr_ops = {
301 .fetch_vendor_settings = rtl8411_fetch_vendor_settings,
302 .extra_init_hw = rtl8411_extra_init_hw,
303 .optimize_phy = NULL,
304 .turn_on_led = rtl8411_turn_on_led,
305 .turn_off_led = rtl8411_turn_off_led,
306 .enable_auto_blink = rtl8411_enable_auto_blink,
307 .disable_auto_blink = rtl8411_disable_auto_blink,
308 .card_power_on = rtl8411_card_power_on,
309 .card_power_off = rtl8411_card_power_off,
310 .switch_output_voltage = rtl8402_switch_output_voltage,
311 .cd_deglitch = rtl8411_cd_deglitch,
312 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
313 .force_power_down = rtl8411_force_power_down,
314};
315
316static const struct pcr_ops rtl8411b_pcr_ops = {
317 .fetch_vendor_settings = rtl8411b_fetch_vendor_settings,
318 .extra_init_hw = rtl8411b_extra_init_hw,
319 .optimize_phy = NULL,
320 .turn_on_led = rtl8411_turn_on_led,
321 .turn_off_led = rtl8411_turn_off_led,
322 .enable_auto_blink = rtl8411_enable_auto_blink,
323 .disable_auto_blink = rtl8411_disable_auto_blink,
324 .card_power_on = rtl8411_card_power_on,
325 .card_power_off = rtl8411_card_power_off,
326 .switch_output_voltage = rtl8411_switch_output_voltage,
327 .cd_deglitch = rtl8411_cd_deglitch,
328 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
329 .force_power_down = rtl8411_force_power_down,
330};
331
332/* SD Pull Control Enable:
333 * SD_DAT[3:0] ==> pull up
334 * SD_CD ==> pull up
335 * SD_WP ==> pull up
336 * SD_CMD ==> pull up
337 * SD_CLK ==> pull down
338 */
339static const u32 rtl8411_sd_pull_ctl_enable_tbl[] = {
340 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
341 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
342 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xA9),
343 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
344 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x09),
345 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
346 0,
347};
348
349/* SD Pull Control Disable:
350 * SD_DAT[3:0] ==> pull down
351 * SD_CD ==> pull up
352 * SD_WP ==> pull down
353 * SD_CMD ==> pull down
354 * SD_CLK ==> pull down
355 */
356static const u32 rtl8411_sd_pull_ctl_disable_tbl[] = {
357 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
358 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
359 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
360 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
361 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
362 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
363 0,
364};
365
366/* MS Pull Control Enable:
367 * MS CD ==> pull up
368 * others ==> pull down
369 */
370static const u32 rtl8411_ms_pull_ctl_enable_tbl[] = {
371 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
372 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
373 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
374 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05),
375 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
376 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
377 0,
378};
379
380/* MS Pull Control Disable:
381 * MS CD ==> pull up
382 * others ==> pull down
383 */
384static const u32 rtl8411_ms_pull_ctl_disable_tbl[] = {
385 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
386 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
387 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
388 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
389 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
390 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
391 0,
392};
393
394static const u32 rtl8411b_qfn64_sd_pull_ctl_enable_tbl[] = {
395 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
396 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
397 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x09 | 0xD0),
398 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
399 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
400 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
401 0,
402};
403
404static const u32 rtl8411b_qfn48_sd_pull_ctl_enable_tbl[] = {
405 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
406 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x69 | 0x90),
407 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x08 | 0x11),
408 0,
409};
410
411static const u32 rtl8411b_qfn64_sd_pull_ctl_disable_tbl[] = {
412 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
413 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
414 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
415 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
416 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
417 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
418 0,
419};
420
421static const u32 rtl8411b_qfn48_sd_pull_ctl_disable_tbl[] = {
422 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
423 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
424 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
425 0,
426};
427
428static const u32 rtl8411b_qfn64_ms_pull_ctl_enable_tbl[] = {
429 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
430 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
431 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
432 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05 | 0x50),
433 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
434 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
435 0,
436};
437
438static const u32 rtl8411b_qfn48_ms_pull_ctl_enable_tbl[] = {
439 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
440 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
441 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
442 0,
443};
444
445static const u32 rtl8411b_qfn64_ms_pull_ctl_disable_tbl[] = {
446 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
447 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
448 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
449 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
450 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
451 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
452 0,
453};
454
455static const u32 rtl8411b_qfn48_ms_pull_ctl_disable_tbl[] = {
456 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
457 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
458 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
459 0,
460};
461
462static void rtl8411_init_common_params(struct rtsx_pcr *pcr)
463{
464 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
465 pcr->num_slots = 2;
466 pcr->flags = 0;
467 pcr->card_drive_sel = RTL8411_CARD_DRIVE_DEFAULT;
468 pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
469 pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
470 pcr->aspm_en = ASPM_L1_EN;
471 pcr->aspm_mode = ASPM_MODE_CFG;
472 pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
473 pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
474 pcr->ic_version = rtl8411_get_ic_version(pcr);
475}
476
477void rtl8411_init_params(struct rtsx_pcr *pcr)
478{
479 rtl8411_init_common_params(pcr);
480 pcr->ops = &rtl8411_pcr_ops;
481 set_pull_ctrl_tables(pcr, rtl8411);
482}
483
484void rtl8411b_init_params(struct rtsx_pcr *pcr)
485{
486 rtl8411_init_common_params(pcr);
487 pcr->ops = &rtl8411b_pcr_ops;
488 if (rtl8411b_is_qfn48(pcr))
489 set_pull_ctrl_tables(pcr, rtl8411b_qfn48);
490 else
491 set_pull_ctrl_tables(pcr, rtl8411b_qfn64);
492}
493
494void rtl8402_init_params(struct rtsx_pcr *pcr)
495{
496 rtl8411_init_common_params(pcr);
497 pcr->ops = &rtl8402_pcr_ops;
498 set_pull_ctrl_tables(pcr, rtl8411);
499}