ARM: ux500: Purge UIB framework when booting with ATAGs
[linux-2.6/btrfs-unstable.git] / drivers / mfd / rtl8411.c
blob52801351864d684e094ec59b60ec797cf4ffcc27
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
8 * later version.
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/>.
18 * Author:
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>
28 #include "rtsx_pcr.h"
30 static u8 rtl8411_get_ic_version(struct rtsx_pcr *pcr)
32 u8 val;
34 rtsx_pci_read_register(pcr, SYS_VER, &val);
35 return val & 0x0F;
38 static int rtl8411b_is_qfn48(struct rtsx_pcr *pcr)
40 u8 val = 0;
42 rtsx_pci_read_register(pcr, RTL8411B_PACKAGE_MODE, &val);
44 if (val & 0x2)
45 return 1;
46 else
47 return 0;
50 static void rtl8411_fetch_vendor_settings(struct rtsx_pcr *pcr)
52 u32 reg1;
53 u8 reg3;
55 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg1);
56 dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg1);
58 if (!rtsx_vendor_setting_valid(reg1))
59 return;
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, &reg3);
68 dev_dbg(&(pcr->pci->dev), "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)
74 u32 reg;
76 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg);
77 dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
79 if (!rtsx_vendor_setting_valid(reg))
80 return;
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,
118 0x06, 0x00);
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)
145 int err;
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);
153 if (err < 0)
154 return err;
156 /* To avoid too large in-rush current */
157 udelay(150);
159 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
160 BPP_POWER_MASK, BPP_POWER_10_PERCENT_ON);
161 if (err < 0)
162 return err;
164 udelay(150);
166 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
167 BPP_POWER_MASK, BPP_POWER_15_PERCENT_ON);
168 if (err < 0)
169 return err;
171 udelay(150);
173 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
174 BPP_POWER_MASK, BPP_POWER_ON);
175 if (err < 0)
176 return err;
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)
183 int err;
185 err = rtsx_pci_write_register(pcr, CARD_PWR_CTL,
186 BPP_POWER_MASK, BPP_POWER_OFF);
187 if (err < 0)
188 return err;
190 return rtsx_pci_write_register(pcr, LDO_CTL,
191 BPP_LDO_POWB, BPP_LDO_SUSPEND);
194 static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
196 u8 mask, val;
197 int err;
199 mask = (BPP_REG_TUNED18 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_MASK;
200 if (voltage == OUTPUT_3V3) {
201 err = rtsx_pci_write_register(pcr,
202 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_3v3);
203 if (err < 0)
204 return err;
205 val = (BPP_ASIC_3V3 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_3V3;
206 } else if (voltage == OUTPUT_1V8) {
207 err = rtsx_pci_write_register(pcr,
208 SD30_DRIVE_SEL, 0x07, pcr->sd30_drive_sel_1v8);
209 if (err < 0)
210 return err;
211 val = (BPP_ASIC_1V8 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_1V8;
212 } else {
213 return -EINVAL;
216 return rtsx_pci_write_register(pcr, LDO_CTL, mask, val);
219 static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr *pcr)
221 unsigned int card_exist;
223 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
224 card_exist &= CARD_EXIST;
225 if (!card_exist) {
226 /* Enable card CD */
227 rtsx_pci_write_register(pcr, CD_PAD_CTL,
228 CD_DISABLE_MASK, CD_ENABLE);
229 /* Enable card interrupt */
230 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x00);
231 return 0;
234 if (hweight32(card_exist) > 1) {
235 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
236 BPP_POWER_MASK, BPP_POWER_5_PERCENT_ON);
237 msleep(100);
239 card_exist = rtsx_pci_readl(pcr, RTSX_BIPR);
240 if (card_exist & MS_EXIST)
241 card_exist = MS_EXIST;
242 else if (card_exist & SD_EXIST)
243 card_exist = SD_EXIST;
244 else
245 card_exist = 0;
247 rtsx_pci_write_register(pcr, CARD_PWR_CTL,
248 BPP_POWER_MASK, BPP_POWER_OFF);
250 dev_dbg(&(pcr->pci->dev),
251 "After CD deglitch, card_exist = 0x%x\n",
252 card_exist);
255 if (card_exist & MS_EXIST) {
256 /* Disable SD interrupt */
257 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x40);
258 rtsx_pci_write_register(pcr, CD_PAD_CTL,
259 CD_DISABLE_MASK, MS_CD_EN_ONLY);
260 } else if (card_exist & SD_EXIST) {
261 /* Disable MS interrupt */
262 rtsx_pci_write_register(pcr, EFUSE_CONTENT, 0xe0, 0x80);
263 rtsx_pci_write_register(pcr, CD_PAD_CTL,
264 CD_DISABLE_MASK, SD_CD_EN_ONLY);
267 return card_exist;
270 static int rtl8411_conv_clk_and_div_n(int input, int dir)
272 int output;
274 if (dir == CLK_TO_DIV_N)
275 output = input * 4 / 5 - 2;
276 else
277 output = (input + 2) * 5 / 4;
279 return output;
282 static const struct pcr_ops rtl8411_pcr_ops = {
283 .fetch_vendor_settings = rtl8411_fetch_vendor_settings,
284 .extra_init_hw = rtl8411_extra_init_hw,
285 .optimize_phy = NULL,
286 .turn_on_led = rtl8411_turn_on_led,
287 .turn_off_led = rtl8411_turn_off_led,
288 .enable_auto_blink = rtl8411_enable_auto_blink,
289 .disable_auto_blink = rtl8411_disable_auto_blink,
290 .card_power_on = rtl8411_card_power_on,
291 .card_power_off = rtl8411_card_power_off,
292 .switch_output_voltage = rtl8411_switch_output_voltage,
293 .cd_deglitch = rtl8411_cd_deglitch,
294 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
295 .force_power_down = rtl8411_force_power_down,
298 static const struct pcr_ops rtl8411b_pcr_ops = {
299 .fetch_vendor_settings = rtl8411b_fetch_vendor_settings,
300 .extra_init_hw = rtl8411b_extra_init_hw,
301 .optimize_phy = NULL,
302 .turn_on_led = rtl8411_turn_on_led,
303 .turn_off_led = rtl8411_turn_off_led,
304 .enable_auto_blink = rtl8411_enable_auto_blink,
305 .disable_auto_blink = rtl8411_disable_auto_blink,
306 .card_power_on = rtl8411_card_power_on,
307 .card_power_off = rtl8411_card_power_off,
308 .switch_output_voltage = rtl8411_switch_output_voltage,
309 .cd_deglitch = rtl8411_cd_deglitch,
310 .conv_clk_and_div_n = rtl8411_conv_clk_and_div_n,
311 .force_power_down = rtl8411_force_power_down,
314 /* SD Pull Control Enable:
315 * SD_DAT[3:0] ==> pull up
316 * SD_CD ==> pull up
317 * SD_WP ==> pull up
318 * SD_CMD ==> pull up
319 * SD_CLK ==> pull down
321 static const u32 rtl8411_sd_pull_ctl_enable_tbl[] = {
322 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
323 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
324 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xA9),
325 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
326 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x09),
327 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
331 /* SD Pull Control Disable:
332 * SD_DAT[3:0] ==> pull down
333 * SD_CD ==> pull up
334 * SD_WP ==> pull down
335 * SD_CMD ==> pull down
336 * SD_CLK ==> pull down
338 static const u32 rtl8411_sd_pull_ctl_disable_tbl[] = {
339 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
340 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
341 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
342 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09),
343 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
344 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
348 /* MS Pull Control Enable:
349 * MS CD ==> pull up
350 * others ==> pull down
352 static const u32 rtl8411_ms_pull_ctl_enable_tbl[] = {
353 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
354 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
355 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x95),
356 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05),
357 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05),
358 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04),
362 /* MS Pull Control Disable:
363 * MS CD ==> pull up
364 * others ==> pull down
366 static const u32 rtl8411_ms_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 static const u32 rtl8411b_qfn64_sd_pull_ctl_enable_tbl[] = {
377 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
378 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
379 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x09 | 0xD0),
380 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
381 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
382 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
386 static const u32 rtl8411b_qfn48_sd_pull_ctl_enable_tbl[] = {
387 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
388 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x69 | 0x90),
389 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x08 | 0x11),
393 static const u32 rtl8411b_qfn64_sd_pull_ctl_disable_tbl[] = {
394 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
395 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
396 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
397 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
398 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
399 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
403 static const u32 rtl8411b_qfn48_sd_pull_ctl_disable_tbl[] = {
404 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
405 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
406 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
410 static const u32 rtl8411b_qfn64_ms_pull_ctl_enable_tbl[] = {
411 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
412 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
413 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
414 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x05 | 0x50),
415 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
416 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
420 static const u32 rtl8411b_qfn48_ms_pull_ctl_enable_tbl[] = {
421 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
422 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
423 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
427 static const u32 rtl8411b_qfn64_ms_pull_ctl_disable_tbl[] = {
428 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x65),
429 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
430 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x05 | 0xD0),
431 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x09 | 0x50),
432 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x05 | 0x50),
433 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
437 static const u32 rtl8411b_qfn48_ms_pull_ctl_disable_tbl[] = {
438 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
439 RTSX_REG_PAIR(CARD_PULL_CTL3, 0x65 | 0x90),
440 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x04 | 0x11),
444 void rtl8411_init_params(struct rtsx_pcr *pcr)
446 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
447 pcr->num_slots = 2;
448 pcr->ops = &rtl8411_pcr_ops;
450 pcr->flags = 0;
451 pcr->card_drive_sel = RTL8411_CARD_DRIVE_DEFAULT;
452 pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
453 pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
454 pcr->aspm_en = ASPM_L1_EN;
455 pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
456 pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
458 pcr->ic_version = rtl8411_get_ic_version(pcr);
459 pcr->sd_pull_ctl_enable_tbl = rtl8411_sd_pull_ctl_enable_tbl;
460 pcr->sd_pull_ctl_disable_tbl = rtl8411_sd_pull_ctl_disable_tbl;
461 pcr->ms_pull_ctl_enable_tbl = rtl8411_ms_pull_ctl_enable_tbl;
462 pcr->ms_pull_ctl_disable_tbl = rtl8411_ms_pull_ctl_disable_tbl;
465 void rtl8411b_init_params(struct rtsx_pcr *pcr)
467 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
468 pcr->num_slots = 2;
469 pcr->ops = &rtl8411b_pcr_ops;
471 pcr->flags = 0;
472 pcr->card_drive_sel = RTL8411_CARD_DRIVE_DEFAULT;
473 pcr->sd30_drive_sel_1v8 = DRIVER_TYPE_B;
474 pcr->sd30_drive_sel_3v3 = DRIVER_TYPE_D;
475 pcr->aspm_en = ASPM_L1_EN;
476 pcr->tx_initial_phase = SET_CLOCK_PHASE(23, 7, 14);
477 pcr->rx_initial_phase = SET_CLOCK_PHASE(4, 3, 10);
479 pcr->ic_version = rtl8411_get_ic_version(pcr);
481 if (rtl8411b_is_qfn48(pcr)) {
482 pcr->sd_pull_ctl_enable_tbl =
483 rtl8411b_qfn48_sd_pull_ctl_enable_tbl;
484 pcr->sd_pull_ctl_disable_tbl =
485 rtl8411b_qfn48_sd_pull_ctl_disable_tbl;
486 pcr->ms_pull_ctl_enable_tbl =
487 rtl8411b_qfn48_ms_pull_ctl_enable_tbl;
488 pcr->ms_pull_ctl_disable_tbl =
489 rtl8411b_qfn48_ms_pull_ctl_disable_tbl;
490 } else {
491 pcr->sd_pull_ctl_enable_tbl =
492 rtl8411b_qfn64_sd_pull_ctl_enable_tbl;
493 pcr->sd_pull_ctl_disable_tbl =
494 rtl8411b_qfn64_sd_pull_ctl_disable_tbl;
495 pcr->ms_pull_ctl_enable_tbl =
496 rtl8411b_qfn64_ms_pull_ctl_enable_tbl;
497 pcr->ms_pull_ctl_disable_tbl =
498 rtl8411b_qfn64_ms_pull_ctl_disable_tbl;