1 /* Driver for Realtek PCI-Express card reader
3 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, see <http://www.gnu.org/licenses/>.
19 * Wei WANG <wei_wang@realsil.com.cn>
20 * Roger Tseng <rogerable@realtek.com>
23 #include <linux/module.h>
24 #include <linux/bitops.h>
25 #include <linux/delay.h>
26 #include <linux/mfd/rtsx_pci.h>
30 static u8 rtl8411_get_ic_version(struct rtsx_pcr *pcr)
34 rtsx_pci_read_register(pcr, SYS_VER, &val);
38 static int rtl8411b_is_qfn48(struct rtsx_pcr *pcr)
42 rtsx_pci_read_register(pcr, RTL8411B_PACKAGE_MODE, &val);
50 static void rtl8411_fetch_vendor_settings(struct rtsx_pcr *pcr)
55 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, ®1);
56 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg1);
58 if (!rtsx_vendor_setting_valid(reg1))
61 pcr->aspm_en = rtsx_reg_to_aspm(reg1);
62 pcr->sd30_drive_sel_1v8 =
63 map_sd_drive(rtsx_reg_to_sd30_drive_sel_1v8(reg1));
64 pcr->card_drive_sel &= 0x3F;
65 pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg1);
67 rtsx_pci_read_config_byte(pcr, PCR_SETTING_REG3, ®3);
68 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG3, reg3);
69 pcr->sd30_drive_sel_3v3 = rtl8411_reg_to_sd30_drive_sel_3v3(reg3);
72 static void rtl8411b_fetch_vendor_settings(struct rtsx_pcr *pcr)
76 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, ®);
77 pcr_dbg(pcr, "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
79 if (!rtsx_vendor_setting_valid(reg))
82 pcr->aspm_en = rtsx_reg_to_aspm(reg);
83 pcr->sd30_drive_sel_1v8 =
84 map_sd_drive(rtsx_reg_to_sd30_drive_sel_1v8(reg));
85 pcr->sd30_drive_sel_3v3 =
86 map_sd_drive(rtl8411b_reg_to_sd30_drive_sel_3v3(reg));
89 static void rtl8411_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
91 rtsx_pci_write_register(pcr, FPDCTL, 0x07, 0x07);
94 static int rtl8411_extra_init_hw(struct rtsx_pcr *pcr)
96 rtsx_pci_init_cmd(pcr);
98 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL,
99 0xFF, pcr->sd30_drive_sel_3v3);
100 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
101 CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
103 return rtsx_pci_send_cmd(pcr, 100);
106 static int rtl8411b_extra_init_hw(struct rtsx_pcr *pcr)
108 rtsx_pci_init_cmd(pcr);
110 if (rtl8411b_is_qfn48(pcr))
111 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD,
112 CARD_PULL_CTL3, 0xFF, 0xF5);
113 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DRIVE_SEL,
114 0xFF, pcr->sd30_drive_sel_3v3);
115 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CD_PAD_CTL,
116 CD_DISABLE_MASK | CD_AUTO_DISABLE, CD_ENABLE);
117 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, FUNC_FORCE_CTL,
120 return rtsx_pci_send_cmd(pcr, 100);
123 static int rtl8411_turn_on_led(struct rtsx_pcr *pcr)
125 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00);
128 static int rtl8411_turn_off_led(struct rtsx_pcr *pcr)
130 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01);
133 static int rtl8411_enable_auto_blink(struct rtsx_pcr *pcr)
135 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
138 static int rtl8411_disable_auto_blink(struct rtsx_pcr *pcr)
140 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
143 static int rtl8411_card_power_on(struct rtsx_pcr *pcr, int card)
147 rtsx_pci_init_cmd(pcr);
148 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
149 BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
150 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_CTL,
151 BPP_LDO_POWB, BPP_LDO_SUSPEND);
152 err = rtsx_pci_send_cmd(pcr, 100);
156 /* To avoid too large in-rush current */
159 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
160 BPP_POWER_MASK, BPP_POWER_10_PERCENT_ON);
166 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
167 BPP_POWER_MASK, BPP_POWER_15_PERCENT_ON);
173 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
174 BPP_POWER_MASK, BPP_POWER_ON);
178 return rtsx_pci_write_register(pcr, LDO_CTL, BPP_LDO_POWB, BPP_LDO_ON);
181 static int rtl8411_card_power_off(struct rtsx_pcr *pcr, int card)
185 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
186 BPP_POWER_MASK, BPP_POWER_OFF);
190 return rtsx_pci_write_register(pcr, LDO_CTL,
191 BPP_LDO_POWB, BPP_LDO_SUSPEND);
194 static int rtl8411_do_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage,
195 int bpp_tuned18_shift, int bpp_asic_1v8)
200 mask = (BPP_REG_TUNED18 << bpp_tuned18_shift) | BPP_PAD_MASK;
201 if (voltage == OUTPUT_3V3) {
202 err = rtsx_pci_write_register(pcr,
203 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3);
206 val = (BPP_ASIC_3V3 << bpp_tuned18_shift) | BPP_PAD_3V3;
207 } else if (voltage == OUTPUT_1V8) {
208 err = rtsx_pci_write_register(pcr,
209 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8);
212 val = (bpp_asic_1v8 << bpp_tuned18_shift) | BPP_PAD_1V8;
217 return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
220 static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
222 return rtl8411_do_switch_output_voltage(pcr, voltage,
223 BPP_TUNED18_SHIFT_8411, BPP_ASIC_1V8);
226 static int rtl8402_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
228 return rtl8411_do_switch_output_voltage(pcr, voltage,
229 BPP_TUNED18_SHIFT_8402, BPP_ASIC_2V0);
232 static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr *pcr)
234 unsigned int card_exist;
236 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
237 card_exist &= CARD_EXIST;
240 rtsx_pci_write_register(pcr, CD_PAD_CTL,
241 CD_DISABLE_MASK, CD_ENABLE);
242 /* Enable card interrupt */
243 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x00);
247 if (hweight32(card_exist) > 1) {
248 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
249 BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
252 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
253 if (card_exist & MS_EXIST)
254 card_exist = MS_EXIST;
255 else if (card_exist & SD_EXIST)
256 card_exist = SD_EXIST;
260 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
261 BPP_POWER_MASK, BPP_POWER_OFF);
263 pcr_dbg(pcr, "After CD deglitch, card_exist = 0x%x\n",
267 if (card_exist & MS_EXIST) {
268 /* Disable SD interrupt */
269 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x40);
270 rtsx_pci_write_register(pcr, CD_PAD_CTL,
271 CD_DISABLE_MASK, MS_CD_EN_ONLY);
272 } else if (card_exist & SD_EXIST) {
273 /* Disable MS interrupt */
274 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x80);
275 rtsx_pci_write_register(pcr, CD_PAD_CTL,
276 CD_DISABLE_MASK, SD_CD_EN_ONLY);
282 static int rtl8411_conv_clk_and_div_n(int input, int dir)
286 if (dir == CLK_TO_DIV_N)
287 output = input * 4 / 5 - 2;
289 output = (input + 2) * 5 / 4;
294 static const struct pcr_ops rtl8411_pcr_ops = {
295 .fetch_vendor_settings = rtl8411_fetch_vendor_settings,
296 .extra_init_hw = rtl8411_extra_init_hw,
297 .optimize_phy = NULL,
298 .turn_on_led = rtl8411_turn_on_led,
299 .turn_off_led = rtl8411_turn_off_led,
300 .enable_auto_blink = rtl8411_enable_auto_blink,
301 .disable_auto_blink = rtl8411_disable_auto_blink,
302 .card_power_on = rtl8411_card_power_on,
303 .card_power_off = rtl8411_card_power_off,
304 .switch_output_voltage = rtl8411_switch_output_voltage,
305 .cd_deglitch = rtl8411_cd_deglitch,
306 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
307 .force_power_down = rtl8411_force_power_down,
310 static const struct pcr_ops rtl8402_pcr_ops = {
311 .fetch_vendor_settings = rtl8411_fetch_vendor_settings,
312 .extra_init_hw = rtl8411_extra_init_hw,
313 .optimize_phy = NULL,
314 .turn_on_led = rtl8411_turn_on_led,
315 .turn_off_led = rtl8411_turn_off_led,
316 .enable_auto_blink = rtl8411_enable_auto_blink,
317 .disable_auto_blink = rtl8411_disable_auto_blink,
318 .card_power_on = rtl8411_card_power_on,
319 .card_power_off = rtl8411_card_power_off,
320 .switch_output_voltage = rtl8402_switch_output_voltage,
321 .cd_deglitch = rtl8411_cd_deglitch,
322 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
323 .force_power_down = rtl8411_force_power_down,
326 static const struct pcr_ops rtl8411b_pcr_ops = {
327 .fetch_vendor_settings = rtl8411b_fetch_vendor_settings,
328 .extra_init_hw = rtl8411b_extra_init_hw,
329 .optimize_phy = NULL,
330 .turn_on_led = rtl8411_turn_on_led,
331 .turn_off_led = rtl8411_turn_off_led,
332 .enable_auto_blink = rtl8411_enable_auto_blink,
333 .disable_auto_blink = rtl8411_disable_auto_blink,
334 .card_power_on = rtl8411_card_power_on,
335 .card_power_off = rtl8411_card_power_off,
336 .switch_output_voltage = rtl8411_switch_output_voltage,
337 .cd_deglitch = rtl8411_cd_deglitch,
338 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
339 .force_power_down = rtl8411_force_power_down,
342 /* SD Pull Control Enable:
343 * SD_DAT[3:0] ==> pull up
347 * SD_CLK ==> pull down
349 static const u32 rtl8411_sd_pull_ctl_enable_tbl[] = {
350 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
351 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
352 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xA9),
353 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
354 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x09),
355 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
359 /* SD Pull Control Disable:
360 * SD_DAT[3:0] ==> pull down
362 * SD_WP ==> pull down
363 * SD_CMD ==> pull down
364 * SD_CLK ==> pull down
366 static const u32 rtl8411_sd_pull_ctl_disable_tbl[] = {
367 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
368 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
369 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
370 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
371 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
372 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
376 /* MS Pull Control Enable:
378 * others ==> pull down
380 static const u32 rtl8411_ms_pull_ctl_enable_tbl[] = {
381 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
382 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
383 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
384 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05),
385 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
386 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
390 /* MS Pull Control Disable:
392 * others ==> pull down
394 static const u32 rtl8411_ms_pull_ctl_disable_tbl[] = {
395 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
396 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
397 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
398 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
399 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
400 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
404 static const u32 rtl8411b_qfn64_sd_pull_ctl_enable_tbl[] = {
405 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
406 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
407 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x09 | 0xD0),
408 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
409 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
410 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
414 static const u32 rtl8411b_qfn48_sd_pull_ctl_enable_tbl[] = {
415 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
416 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x69 | 0x90),
417 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x08 | 0x11),
421 static const u32 rtl8411b_qfn64_sd_pull_ctl_disable_tbl[] = {
422 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
423 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
424 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
425 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
426 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
427 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
431 static const u32 rtl8411b_qfn48_sd_pull_ctl_disable_tbl[] = {
432 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
433 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
434 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
438 static const u32 rtl8411b_qfn64_ms_pull_ctl_enable_tbl[] = {
439 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
440 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
441 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
442 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05 | 0x50),
443 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
444 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
448 static const u32 rtl8411b_qfn48_ms_pull_ctl_enable_tbl[] = {
449 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
450 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
451 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
455 static const u32 rtl8411b_qfn64_ms_pull_ctl_disable_tbl[] = {
456 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
457 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
458 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
459 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
460 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
461 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
465 static const u32 rtl8411b_qfn48_ms_pull_ctl_disable_tbl[] = {
466 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
467 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
468 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
472 static void rtl8411_init_common_params(struct rtsx_pcr *pcr)
474 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
477 pcr->card_drive_sel = RTL8411_CARD_DRIVE_DEFAULT;
478 pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
479 pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
480 pcr->aspm_en = ASPM_L1_EN;
481 pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
482 pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
483 pcr->ic_version = rtl8411_get_ic_version(pcr);
486 void rtl8411_init_params(struct rtsx_pcr *pcr)
488 rtl8411_init_common_params(pcr);
489 pcr->ops = &rtl8411_pcr_ops;
490 set_pull_ctrl_tables(pcr, rtl8411);
493 void rtl8411b_init_params(struct rtsx_pcr *pcr)
495 rtl8411_init_common_params(pcr);
496 pcr->ops = &rtl8411b_pcr_ops;
497 if (rtl8411b_is_qfn48(pcr))
498 set_pull_ctrl_tables(pcr, rtl8411b_qfn48);
500 set_pull_ctrl_tables(pcr, rtl8411b_qfn64);
503 void rtl8402_init_params(struct rtsx_pcr *pcr)
505 rtl8411_init_common_params(pcr);
506 pcr->ops = &rtl8402_pcr_ops;
507 set_pull_ctrl_tables(pcr, rtl8411);