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/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 rtl8411_extra_init_hw(struct rtsx_pcr
*pcr
)
40 return rtsx_pci_write_register(pcr
, CD_PAD_CTL
,
41 CD_DISABLE_MASK
| CD_AUTO_DISABLE
, CD_ENABLE
);
44 static int rtl8411_turn_on_led(struct rtsx_pcr
*pcr
)
46 return rtsx_pci_write_register(pcr
, CARD_GPIO
, 0x01, 0x00);
49 static int rtl8411_turn_off_led(struct rtsx_pcr
*pcr
)
51 return rtsx_pci_write_register(pcr
, CARD_GPIO
, 0x01, 0x01);
54 static int rtl8411_enable_auto_blink(struct rtsx_pcr
*pcr
)
56 return rtsx_pci_write_register(pcr
, CARD_AUTO_BLINK
, 0xFF, 0x0D);
59 static int rtl8411_disable_auto_blink(struct rtsx_pcr
*pcr
)
61 return rtsx_pci_write_register(pcr
, CARD_AUTO_BLINK
, 0x08, 0x00);
64 static int rtl8411_card_power_on(struct rtsx_pcr
*pcr
, int card
)
68 rtsx_pci_init_cmd(pcr
);
69 rtsx_pci_add_cmd(pcr
, WRITE_REG_CMD
, CARD_PWR_CTL
,
70 BPP_POWER_MASK
, BPP_POWER_5_PERCENT_ON
);
71 rtsx_pci_add_cmd(pcr
, WRITE_REG_CMD
, LDO_CTL
,
72 BPP_LDO_POWB
, BPP_LDO_SUSPEND
);
73 err
= rtsx_pci_send_cmd(pcr
, 100);
77 /* To avoid too large in-rush current */
80 err
= rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
81 BPP_POWER_MASK
, BPP_POWER_10_PERCENT_ON
);
87 err
= rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
88 BPP_POWER_MASK
, BPP_POWER_15_PERCENT_ON
);
94 err
= rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
95 BPP_POWER_MASK
, BPP_POWER_ON
);
99 return rtsx_pci_write_register(pcr
, LDO_CTL
, BPP_LDO_POWB
, BPP_LDO_ON
);
102 static int rtl8411_card_power_off(struct rtsx_pcr
*pcr
, int card
)
106 err
= rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
107 BPP_POWER_MASK
, BPP_POWER_OFF
);
111 return rtsx_pci_write_register(pcr
, LDO_CTL
,
112 BPP_LDO_POWB
, BPP_LDO_SUSPEND
);
115 static unsigned int rtl8411_cd_deglitch(struct rtsx_pcr
*pcr
)
117 unsigned int card_exist
;
119 card_exist
= rtsx_pci_readl(pcr
, RTSX_BIPR
);
120 card_exist
&= CARD_EXIST
;
123 rtsx_pci_write_register(pcr
, CD_PAD_CTL
,
124 CD_DISABLE_MASK
, CD_ENABLE
);
125 /* Enable card interrupt */
126 rtsx_pci_write_register(pcr
, EFUSE_CONTENT
, 0xe0, 0x00);
130 if (hweight32(card_exist
) > 1) {
131 rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
132 BPP_POWER_MASK
, BPP_POWER_5_PERCENT_ON
);
135 card_exist
= rtsx_pci_readl(pcr
, RTSX_BIPR
);
136 if (card_exist
& MS_EXIST
)
137 card_exist
= MS_EXIST
;
138 else if (card_exist
& SD_EXIST
)
139 card_exist
= SD_EXIST
;
143 rtsx_pci_write_register(pcr
, CARD_PWR_CTL
,
144 BPP_POWER_MASK
, BPP_POWER_OFF
);
146 dev_dbg(&(pcr
->pci
->dev
),
147 "After CD deglitch, card_exist = 0x%x\n",
151 if (card_exist
& MS_EXIST
) {
152 /* Disable SD interrupt */
153 rtsx_pci_write_register(pcr
, EFUSE_CONTENT
, 0xe0, 0x40);
154 rtsx_pci_write_register(pcr
, CD_PAD_CTL
,
155 CD_DISABLE_MASK
, MS_CD_EN_ONLY
);
156 } else if (card_exist
& SD_EXIST
) {
157 /* Disable MS interrupt */
158 rtsx_pci_write_register(pcr
, EFUSE_CONTENT
, 0xe0, 0x80);
159 rtsx_pci_write_register(pcr
, CD_PAD_CTL
,
160 CD_DISABLE_MASK
, SD_CD_EN_ONLY
);
166 static const struct pcr_ops rtl8411_pcr_ops
= {
167 .extra_init_hw
= rtl8411_extra_init_hw
,
168 .optimize_phy
= NULL
,
169 .turn_on_led
= rtl8411_turn_on_led
,
170 .turn_off_led
= rtl8411_turn_off_led
,
171 .enable_auto_blink
= rtl8411_enable_auto_blink
,
172 .disable_auto_blink
= rtl8411_disable_auto_blink
,
173 .card_power_on
= rtl8411_card_power_on
,
174 .card_power_off
= rtl8411_card_power_off
,
175 .cd_deglitch
= rtl8411_cd_deglitch
,
178 /* SD Pull Control Enable:
179 * SD_DAT[3:0] ==> pull up
183 * SD_CLK ==> pull down
185 static const u32 rtl8411_sd_pull_ctl_enable_tbl
[] = {
186 RTSX_REG_PAIR(CARD_PULL_CTL1
, 0xAA),
187 RTSX_REG_PAIR(CARD_PULL_CTL2
, 0xAA),
188 RTSX_REG_PAIR(CARD_PULL_CTL3
, 0xA9),
189 RTSX_REG_PAIR(CARD_PULL_CTL4
, 0x09),
190 RTSX_REG_PAIR(CARD_PULL_CTL5
, 0x09),
191 RTSX_REG_PAIR(CARD_PULL_CTL6
, 0x04),
195 /* SD Pull Control Disable:
196 * SD_DAT[3:0] ==> pull down
198 * SD_WP ==> pull down
199 * SD_CMD ==> pull down
200 * SD_CLK ==> pull down
202 static const u32 rtl8411_sd_pull_ctl_disable_tbl
[] = {
203 RTSX_REG_PAIR(CARD_PULL_CTL1
, 0x65),
204 RTSX_REG_PAIR(CARD_PULL_CTL2
, 0x55),
205 RTSX_REG_PAIR(CARD_PULL_CTL3
, 0x95),
206 RTSX_REG_PAIR(CARD_PULL_CTL4
, 0x09),
207 RTSX_REG_PAIR(CARD_PULL_CTL5
, 0x05),
208 RTSX_REG_PAIR(CARD_PULL_CTL6
, 0x04),
212 /* MS Pull Control Enable:
214 * others ==> pull down
216 static const u32 rtl8411_ms_pull_ctl_enable_tbl
[] = {
217 RTSX_REG_PAIR(CARD_PULL_CTL1
, 0x65),
218 RTSX_REG_PAIR(CARD_PULL_CTL2
, 0x55),
219 RTSX_REG_PAIR(CARD_PULL_CTL3
, 0x95),
220 RTSX_REG_PAIR(CARD_PULL_CTL4
, 0x05),
221 RTSX_REG_PAIR(CARD_PULL_CTL5
, 0x05),
222 RTSX_REG_PAIR(CARD_PULL_CTL6
, 0x04),
226 /* MS Pull Control Disable:
228 * others ==> pull down
230 static const u32 rtl8411_ms_pull_ctl_disable_tbl
[] = {
231 RTSX_REG_PAIR(CARD_PULL_CTL1
, 0x65),
232 RTSX_REG_PAIR(CARD_PULL_CTL2
, 0x55),
233 RTSX_REG_PAIR(CARD_PULL_CTL3
, 0x95),
234 RTSX_REG_PAIR(CARD_PULL_CTL4
, 0x09),
235 RTSX_REG_PAIR(CARD_PULL_CTL5
, 0x05),
236 RTSX_REG_PAIR(CARD_PULL_CTL6
, 0x04),
240 void rtl8411_init_params(struct rtsx_pcr
*pcr
)
242 pcr
->extra_caps
= EXTRA_CAPS_SD_SDR50
| EXTRA_CAPS_SD_SDR104
;
244 pcr
->ops
= &rtl8411_pcr_ops
;
246 pcr
->ic_version
= rtl8411_get_ic_version(pcr
);
247 pcr
->sd_pull_ctl_enable_tbl
= rtl8411_sd_pull_ctl_enable_tbl
;
248 pcr
->sd_pull_ctl_disable_tbl
= rtl8411_sd_pull_ctl_disable_tbl
;
249 pcr
->ms_pull_ctl_enable_tbl
= rtl8411_ms_pull_ctl_enable_tbl
;
250 pcr
->ms_pull_ctl_disable_tbl
= rtl8411_ms_pull_ctl_disable_tbl
;