mfd: rtsx: Update phy register
[linux-2.6-block.git] / drivers / mfd / rts5249.c
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1/* Driver for Realtek PCI-Express card reader
2 *
3 * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved.
4 *
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.
9 *
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.
14 *
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/>.
17 *
18 * Author:
19 * Wei WANG <wei_wang@realsil.com.cn>
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20 */
21
22#include <linux/module.h>
23#include <linux/delay.h>
24#include <linux/mfd/rtsx_pci.h>
25
26#include "rtsx_pcr.h"
27
28static u8 rts5249_get_ic_version(struct rtsx_pcr *pcr)
29{
30 u8 val;
31
32 rtsx_pci_read_register(pcr, DUMMY_REG_RESET_0, &val);
33 return val & 0x0F;
34}
35
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36static void rts5249_fill_driving(struct rtsx_pcr *pcr, u8 voltage)
37{
38 u8 driving_3v3[4][3] = {
e89f2318 39 {0x11, 0x11, 0x18},
773ccdfd 40 {0x55, 0x55, 0x5C},
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41 {0xFF, 0xFF, 0xFF},
42 {0x96, 0x96, 0x96},
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43 };
44 u8 driving_1v8[4][3] = {
e89f2318 45 {0xC4, 0xC4, 0xC4},
773ccdfd 46 {0x3C, 0x3C, 0x3C},
773ccdfd 47 {0xFE, 0xFE, 0xFE},
e89f2318 48 {0xB3, 0xB3, 0xB3},
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49 };
50 u8 (*driving)[3], drive_sel;
51
52 if (voltage == OUTPUT_3V3) {
53 driving = driving_3v3;
54 drive_sel = pcr->sd30_drive_sel_3v3;
55 } else {
56 driving = driving_1v8;
57 drive_sel = pcr->sd30_drive_sel_1v8;
58 }
59
60 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CLK_DRIVE_SEL,
61 0xFF, driving[drive_sel][0]);
62 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_CMD_DRIVE_SEL,
63 0xFF, driving[drive_sel][1]);
64 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, SD30_DAT_DRIVE_SEL,
65 0xFF, driving[drive_sel][2]);
66}
67
68static void rts5249_fetch_vendor_settings(struct rtsx_pcr *pcr)
69{
70 u32 reg;
71
72 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG1, &reg);
73 dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG1, reg);
74
75 if (!rtsx_vendor_setting_valid(reg))
76 return;
77
78 pcr->aspm_en = rtsx_reg_to_aspm(reg);
79 pcr->sd30_drive_sel_1v8 = rtsx_reg_to_sd30_drive_sel_1v8(reg);
80 pcr->card_drive_sel &= 0x3F;
81 pcr->card_drive_sel |= rtsx_reg_to_card_drive_sel(reg);
82
83 rtsx_pci_read_config_dword(pcr, PCR_SETTING_REG2, &reg);
84 dev_dbg(&(pcr->pci->dev), "Cfg 0x%x: 0x%x\n", PCR_SETTING_REG2, reg);
85 pcr->sd30_drive_sel_3v3 = rtsx_reg_to_sd30_drive_sel_3v3(reg);
86 if (rtsx_reg_check_reverse_socket(reg))
87 pcr->flags |= PCR_REVERSE_SOCKET;
88}
89
eb891c65 90static void rts5249_force_power_down(struct rtsx_pcr *pcr, u8 pm_state)
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91{
92 /* Set relink_time to 0 */
93 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 1, 0xFF, 0);
94 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 2, 0xFF, 0);
95 rtsx_pci_write_register(pcr, AUTOLOAD_CFG_BASE + 3, 0x01, 0);
96
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97 if (pm_state == HOST_ENTER_S3)
98 rtsx_pci_write_register(pcr, PM_CTRL3, 0x10, 0x10);
99
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100 rtsx_pci_write_register(pcr, FPDCTL, 0x03, 0x03);
101}
102
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103static int rts5249_extra_init_hw(struct rtsx_pcr *pcr)
104{
105 rtsx_pci_init_cmd(pcr);
106
107 /* Configure GPIO as output */
108 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, GPIO_CTL, 0x02, 0x02);
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109 /* Reset ASPM state to default value */
110 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, ASPM_FORCE_CTL, 0x3F, 0);
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111 /* Switch LDO3318 source from DV33 to card_3v3 */
112 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x00);
113 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, LDO_PWR_SEL, 0x03, 0x01);
114 /* LED shine disabled, set initial shine cycle period */
115 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, OLT_LED_CTL, 0x0F, 0x02);
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116 /* Configure driving */
117 rts5249_fill_driving(pcr, OUTPUT_3V3);
118 if (pcr->flags & PCR_REVERSE_SOCKET)
9e33ce79 119 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0xB0);
773ccdfd 120 else
9e33ce79 121 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PETXCFG, 0xB0, 0x80);
eb891c65 122 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PM_CTRL3, 0x10, 0x00);
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123
124 return rtsx_pci_send_cmd(pcr, 100);
125}
126
127static int rts5249_optimize_phy(struct rtsx_pcr *pcr)
128{
129 int err;
130
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131 err = rtsx_gops_pm_reset(pcr);
132 if (err < 0)
133 return err;
134
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135 err = rtsx_pci_write_phy_register(pcr, PHY_REV,
136 PHY_REV_RESV | PHY_REV_RXIDLE_LATCHED |
137 PHY_REV_P1_EN | PHY_REV_RXIDLE_EN |
138 PHY_REV_CLKREQ_TX_EN | PHY_REV_RX_PWST |
139 PHY_REV_CLKREQ_DT_1_0 | PHY_REV_STOP_CLKRD |
140 PHY_REV_STOP_CLKWR);
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141 if (err < 0)
142 return err;
143
144 msleep(1);
145
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146 err = rtsx_pci_write_phy_register(pcr, PHY_BPCR,
147 PHY_BPCR_IBRXSEL | PHY_BPCR_IBTXSEL |
148 PHY_BPCR_IB_FILTER | PHY_BPCR_CMIRROR_EN);
149 if (err < 0)
150 return err;
b0385381 151
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152 err = rtsx_pci_write_phy_register(pcr, PHY_PCR,
153 PHY_PCR_FORCE_CODE | PHY_PCR_OOBS_CALI_50 |
154 PHY_PCR_OOBS_VCM_08 | PHY_PCR_OOBS_SEN_90 |
b0385381 155 PHY_PCR_RSSI_EN | PHY_PCR_RX10K);
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156 if (err < 0)
157 return err;
b0385381 158
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159 err = rtsx_pci_write_phy_register(pcr, PHY_RCR2,
160 PHY_RCR2_EMPHASE_EN | PHY_RCR2_NADJR |
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161 PHY_RCR2_CDR_SR_2 | PHY_RCR2_FREQSEL_12 |
162 PHY_RCR2_CDR_SC_12P | PHY_RCR2_CALIB_LATE);
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163 if (err < 0)
164 return err;
b0385381 165
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166 err = rtsx_pci_write_phy_register(pcr, PHY_FLD4,
167 PHY_FLD4_FLDEN_SEL | PHY_FLD4_REQ_REF |
168 PHY_FLD4_RXAMP_OFF | PHY_FLD4_REQ_ADDA |
169 PHY_FLD4_BER_COUNT | PHY_FLD4_BER_TIMER |
170 PHY_FLD4_BER_CHK_EN);
171 if (err < 0)
172 return err;
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173 err = rtsx_pci_write_phy_register(pcr, PHY_RDR,
174 PHY_RDR_RXDSEL_1_9 | PHY_SSC_AUTO_PWD);
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175 if (err < 0)
176 return err;
177 err = rtsx_pci_write_phy_register(pcr, PHY_RCR1,
b0385381 178 PHY_RCR1_ADP_TIME_4 | PHY_RCR1_VCO_COARSE);
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179 if (err < 0)
180 return err;
181 err = rtsx_pci_write_phy_register(pcr, PHY_FLD3,
182 PHY_FLD3_TIMER_4 | PHY_FLD3_TIMER_6 |
183 PHY_FLD3_RXDELINK);
184 if (err < 0)
185 return err;
b0385381 186
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187 return rtsx_pci_write_phy_register(pcr, PHY_TUNE,
188 PHY_TUNE_TUNEREF_1_0 | PHY_TUNE_VBGSEL_1252 |
189 PHY_TUNE_SDBUS_33 | PHY_TUNE_TUNED18 |
b0385381 190 PHY_TUNE_TUNED12 | PHY_TUNE_TUNEA12);
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191}
192
193static int rts5249_turn_on_led(struct rtsx_pcr *pcr)
194{
195 return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x02);
196}
197
198static int rts5249_turn_off_led(struct rtsx_pcr *pcr)
199{
200 return rtsx_pci_write_register(pcr, GPIO_CTL, 0x02, 0x00);
201}
202
203static int rts5249_enable_auto_blink(struct rtsx_pcr *pcr)
204{
205 return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x08);
206}
207
208static int rts5249_disable_auto_blink(struct rtsx_pcr *pcr)
209{
210 return rtsx_pci_write_register(pcr, OLT_LED_CTL, 0x08, 0x00);
211}
212
213static int rts5249_card_power_on(struct rtsx_pcr *pcr, int card)
214{
215 int err;
216
217 rtsx_pci_init_cmd(pcr);
218 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
219 SD_POWER_MASK, SD_VCC_PARTIAL_POWER_ON);
220 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
221 LDO3318_PWR_MASK, 0x02);
222 err = rtsx_pci_send_cmd(pcr, 100);
223 if (err < 0)
224 return err;
225
226 msleep(5);
227
228 rtsx_pci_init_cmd(pcr);
229 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
230 SD_POWER_MASK, SD_VCC_POWER_ON);
231 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
232 LDO3318_PWR_MASK, 0x06);
233 err = rtsx_pci_send_cmd(pcr, 100);
234 if (err < 0)
235 return err;
236
237 return 0;
238}
239
240static int rts5249_card_power_off(struct rtsx_pcr *pcr, int card)
241{
242 rtsx_pci_init_cmd(pcr);
243 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
244 SD_POWER_MASK, SD_POWER_OFF);
245 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
246 LDO3318_PWR_MASK, 0x00);
247 return rtsx_pci_send_cmd(pcr, 100);
248}
249
250static int rts5249_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
251{
252 int err;
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253
254 if (voltage == OUTPUT_3V3) {
255 err = rtsx_pci_write_phy_register(pcr, PHY_TUNE, 0x4FC0 | 0x24);
256 if (err < 0)
257 return err;
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258 } else if (voltage == OUTPUT_1V8) {
259 err = rtsx_pci_write_phy_register(pcr, PHY_BACR, 0x3C02);
260 if (err < 0)
261 return err;
262 err = rtsx_pci_write_phy_register(pcr, PHY_TUNE, 0x4C40 | 0x24);
263 if (err < 0)
264 return err;
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265 } else {
266 return -EINVAL;
267 }
268
269 /* set pad drive */
270 rtsx_pci_init_cmd(pcr);
773ccdfd 271 rts5249_fill_driving(pcr, voltage);
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272 return rtsx_pci_send_cmd(pcr, 100);
273}
274
275static const struct pcr_ops rts5249_pcr_ops = {
773ccdfd 276 .fetch_vendor_settings = rts5249_fetch_vendor_settings,
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277 .extra_init_hw = rts5249_extra_init_hw,
278 .optimize_phy = rts5249_optimize_phy,
279 .turn_on_led = rts5249_turn_on_led,
280 .turn_off_led = rts5249_turn_off_led,
281 .enable_auto_blink = rts5249_enable_auto_blink,
282 .disable_auto_blink = rts5249_disable_auto_blink,
283 .card_power_on = rts5249_card_power_on,
284 .card_power_off = rts5249_card_power_off,
285 .switch_output_voltage = rts5249_switch_output_voltage,
5947c167 286 .force_power_down = rts5249_force_power_down,
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287};
288
289/* SD Pull Control Enable:
290 * SD_DAT[3:0] ==> pull up
291 * SD_CD ==> pull up
292 * SD_WP ==> pull up
293 * SD_CMD ==> pull up
294 * SD_CLK ==> pull down
295 */
296static const u32 rts5249_sd_pull_ctl_enable_tbl[] = {
297 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66),
298 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
299 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
300 RTSX_REG_PAIR(CARD_PULL_CTL4, 0xAA),
301 0,
302};
303
304/* SD Pull Control Disable:
305 * SD_DAT[3:0] ==> pull down
306 * SD_CD ==> pull up
307 * SD_WP ==> pull down
308 * SD_CMD ==> pull down
309 * SD_CLK ==> pull down
310 */
311static const u32 rts5249_sd_pull_ctl_disable_tbl[] = {
312 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x66),
313 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
314 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
315 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
316 0,
317};
318
319/* MS Pull Control Enable:
320 * MS CD ==> pull up
321 * others ==> pull down
322 */
323static const u32 rts5249_ms_pull_ctl_enable_tbl[] = {
324 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
325 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
326 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
327 0,
328};
329
330/* MS Pull Control Disable:
331 * MS CD ==> pull up
332 * others ==> pull down
333 */
334static const u32 rts5249_ms_pull_ctl_disable_tbl[] = {
335 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
336 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
337 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
338 0,
339};
340
341void rts5249_init_params(struct rtsx_pcr *pcr)
342{
343 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | EXTRA_CAPS_SD_SDR104;
344 pcr->num_slots = 2;
345 pcr->ops = &rts5249_pcr_ops;
346
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347 pcr->flags = 0;
348 pcr->card_drive_sel = RTSX_CARD_DRIVE_DEFAULT;
e89f2318 349 pcr->sd30_drive_sel_1v8 = CFG_DRIVER_TYPE_B;
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350 pcr->sd30_drive_sel_3v3 = CFG_DRIVER_TYPE_B;
351 pcr->aspm_en = ASPM_L1_EN;
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352 pcr->tx_initial_phase = SET_CLOCK_PHASE(1, 29, 16);
353 pcr->rx_initial_phase = SET_CLOCK_PHASE(24, 6, 5);
773ccdfd 354
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355 pcr->ic_version = rts5249_get_ic_version(pcr);
356 pcr->sd_pull_ctl_enable_tbl = rts5249_sd_pull_ctl_enable_tbl;
357 pcr->sd_pull_ctl_disable_tbl = rts5249_sd_pull_ctl_disable_tbl;
358 pcr->ms_pull_ctl_enable_tbl = rts5249_ms_pull_ctl_enable_tbl;
359 pcr->ms_pull_ctl_disable_tbl = rts5249_ms_pull_ctl_disable_tbl;
360}