1 /* Driver for Realtek PCI-Express card reader
3 * Copyright(c) 2009 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 * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
23 #include <linux/module.h>
24 #include <linux/delay.h>
25 #include <linux/mfd/rtsx_pci.h>
29 static u8 rts5209_get_ic_version(struct rtsx_pcr *pcr)
33 val = rtsx_pci_readb(pcr, 0x1C);
37 static void rts5209_init_vendor_cfg(struct rtsx_pcr *pcr)
41 rtsx_pci_read_config_dword(pcr, 0x724, &val);
42 dev_dbg(&(pcr->pci->dev), "Cfg 0x724: 0x%x\n", val);
52 static int rts5209_extra_init_hw(struct rtsx_pcr *pcr)
54 rtsx_pci_init_cmd(pcr);
57 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_GPIO, 0xFF, 0x03);
58 /* Configure GPIO as output */
59 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_GPIO_DIR, 0xFF, 0x03);
61 return rtsx_pci_send_cmd(pcr, 100);
64 static int rts5209_optimize_phy(struct rtsx_pcr *pcr)
66 return rtsx_pci_write_phy_register(pcr, 0x00, 0xB966);
69 static int rts5209_turn_on_led(struct rtsx_pcr *pcr)
71 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00);
74 static int rts5209_turn_off_led(struct rtsx_pcr *pcr)
76 return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01);
79 static int rts5209_enable_auto_blink(struct rtsx_pcr *pcr)
81 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D);
84 static int rts5209_disable_auto_blink(struct rtsx_pcr *pcr)
86 return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00);
89 static int rts5209_card_power_on(struct rtsx_pcr *pcr, int card)
92 u8 pwr_mask, partial_pwr_on, pwr_on;
94 pwr_mask = SD_POWER_MASK;
95 partial_pwr_on = SD_PARTIAL_POWER_ON;
98 if (pcr->ms_pmos && (card == RTSX_MS_CARD)) {
99 pwr_mask = MS_POWER_MASK;
100 partial_pwr_on = MS_PARTIAL_POWER_ON;
101 pwr_on = MS_POWER_ON;
104 rtsx_pci_init_cmd(pcr);
105 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
106 pwr_mask, partial_pwr_on);
107 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
108 LDO3318_PWR_MASK, 0x04);
109 err = rtsx_pci_send_cmd(pcr, 100);
113 /* To avoid too large in-rush current */
116 rtsx_pci_init_cmd(pcr);
117 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL, pwr_mask, pwr_on);
118 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
119 LDO3318_PWR_MASK, 0x00);
120 err = rtsx_pci_send_cmd(pcr, 100);
127 static int rts5209_card_power_off(struct rtsx_pcr *pcr, int card)
129 u8 pwr_mask, pwr_off;
131 pwr_mask = SD_POWER_MASK;
132 pwr_off = SD_POWER_OFF;
134 if (pcr->ms_pmos && (card == RTSX_MS_CARD)) {
135 pwr_mask = MS_POWER_MASK;
136 pwr_off = MS_POWER_OFF;
139 rtsx_pci_init_cmd(pcr);
140 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_PWR_CTL,
141 pwr_mask | PMOS_STRG_MASK, pwr_off | PMOS_STRG_400mA);
142 rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, PWR_GATE_CTRL,
143 LDO3318_PWR_MASK, 0X06);
144 return rtsx_pci_send_cmd(pcr, 100);
147 static int rts5209_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
151 if (voltage == OUTPUT_3V3) {
152 err = rtsx_pci_write_register(pcr,
153 SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D);
156 err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
159 } else if (voltage == OUTPUT_1V8) {
160 err = rtsx_pci_write_register(pcr,
161 SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B);
164 err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24);
174 static const struct pcr_ops rts5209_pcr_ops = {
175 .extra_init_hw = rts5209_extra_init_hw,
176 .optimize_phy = rts5209_optimize_phy,
177 .turn_on_led = rts5209_turn_on_led,
178 .turn_off_led = rts5209_turn_off_led,
179 .enable_auto_blink = rts5209_enable_auto_blink,
180 .disable_auto_blink = rts5209_disable_auto_blink,
181 .card_power_on = rts5209_card_power_on,
182 .card_power_off = rts5209_card_power_off,
183 .switch_output_voltage = rts5209_switch_output_voltage,
185 .conv_clk_and_div_n = NULL,
188 /* SD Pull Control Enable:
189 * SD_DAT[3:0] ==> pull up
193 * SD_CLK ==> pull down
195 static const u32 rts5209_sd_pull_ctl_enable_tbl[] = {
196 RTSX_REG_PAIR(CARD_PULL_CTL1, 0xAA),
197 RTSX_REG_PAIR(CARD_PULL_CTL2, 0xAA),
198 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xE9),
202 /* SD Pull Control Disable:
203 * SD_DAT[3:0] ==> pull down
205 * SD_WP ==> pull down
206 * SD_CMD ==> pull down
207 * SD_CLK ==> pull down
209 static const u32 rts5209_sd_pull_ctl_disable_tbl[] = {
210 RTSX_REG_PAIR(CARD_PULL_CTL1, 0x55),
211 RTSX_REG_PAIR(CARD_PULL_CTL2, 0x55),
212 RTSX_REG_PAIR(CARD_PULL_CTL3, 0xD5),
216 /* MS Pull Control Enable:
218 * others ==> pull down
220 static const u32 rts5209_ms_pull_ctl_enable_tbl[] = {
221 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
222 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
223 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
227 /* MS Pull Control Disable:
229 * others ==> pull down
231 static const u32 rts5209_ms_pull_ctl_disable_tbl[] = {
232 RTSX_REG_PAIR(CARD_PULL_CTL4, 0x55),
233 RTSX_REG_PAIR(CARD_PULL_CTL5, 0x55),
234 RTSX_REG_PAIR(CARD_PULL_CTL6, 0x15),
238 void rts5209_init_params(struct rtsx_pcr *pcr)
240 pcr->extra_caps = EXTRA_CAPS_SD_SDR50 |
241 EXTRA_CAPS_SD_SDR104 | EXTRA_CAPS_MMC_8BIT;
243 pcr->ops = &rts5209_pcr_ops;
245 rts5209_init_vendor_cfg(pcr);
247 pcr->ic_version = rts5209_get_ic_version(pcr);
248 pcr->sd_pull_ctl_enable_tbl = rts5209_sd_pull_ctl_enable_tbl;
249 pcr->sd_pull_ctl_disable_tbl = rts5209_sd_pull_ctl_disable_tbl;
250 pcr->ms_pull_ctl_enable_tbl = rts5209_ms_pull_ctl_enable_tbl;
251 pcr->ms_pull_ctl_disable_tbl = rts5209_ms_pull_ctl_disable_tbl;