Root/
1 | /* Driver for Realtek PCI-Express card reader |
2 | * |
3 | * Copyright(c) 2009 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> |
20 | * No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China |
21 | */ |
22 | |
23 | #include <linux/module.h> |
24 | #include <linux/delay.h> |
25 | #include <linux/mfd/rtsx_pci.h> |
26 | |
27 | #include "rtsx_pcr.h" |
28 | |
29 | static u8 rts5209_get_ic_version(struct rtsx_pcr *pcr) |
30 | { |
31 | u8 val; |
32 | |
33 | val = rtsx_pci_readb(pcr, 0x1C); |
34 | return val & 0x0F; |
35 | } |
36 | |
37 | static void rts5209_init_vendor_cfg(struct rtsx_pcr *pcr) |
38 | { |
39 | u32 val; |
40 | |
41 | rtsx_pci_read_config_dword(pcr, 0x724, &val); |
42 | dev_dbg(&(pcr->pci->dev), "Cfg 0x724: 0x%x\n", val); |
43 | |
44 | if (!(val & 0x80)) { |
45 | if (val & 0x08) |
46 | pcr->ms_pmos = false; |
47 | else |
48 | pcr->ms_pmos = true; |
49 | } |
50 | } |
51 | |
52 | static int rts5209_extra_init_hw(struct rtsx_pcr *pcr) |
53 | { |
54 | rtsx_pci_init_cmd(pcr); |
55 | |
56 | /* Turn off LED */ |
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); |
60 | |
61 | return rtsx_pci_send_cmd(pcr, 100); |
62 | } |
63 | |
64 | static int rts5209_optimize_phy(struct rtsx_pcr *pcr) |
65 | { |
66 | return rtsx_pci_write_phy_register(pcr, 0x00, 0xB966); |
67 | } |
68 | |
69 | static int rts5209_turn_on_led(struct rtsx_pcr *pcr) |
70 | { |
71 | return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x00); |
72 | } |
73 | |
74 | static int rts5209_turn_off_led(struct rtsx_pcr *pcr) |
75 | { |
76 | return rtsx_pci_write_register(pcr, CARD_GPIO, 0x01, 0x01); |
77 | } |
78 | |
79 | static int rts5209_enable_auto_blink(struct rtsx_pcr *pcr) |
80 | { |
81 | return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0xFF, 0x0D); |
82 | } |
83 | |
84 | static int rts5209_disable_auto_blink(struct rtsx_pcr *pcr) |
85 | { |
86 | return rtsx_pci_write_register(pcr, CARD_AUTO_BLINK, 0x08, 0x00); |
87 | } |
88 | |
89 | static int rts5209_card_power_on(struct rtsx_pcr *pcr, int card) |
90 | { |
91 | int err; |
92 | u8 pwr_mask, partial_pwr_on, pwr_on; |
93 | |
94 | pwr_mask = SD_POWER_MASK; |
95 | partial_pwr_on = SD_PARTIAL_POWER_ON; |
96 | pwr_on = SD_POWER_ON; |
97 | |
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; |
102 | } |
103 | |
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); |
110 | if (err < 0) |
111 | return err; |
112 | |
113 | /* To avoid too large in-rush current */ |
114 | udelay(150); |
115 | |
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); |
121 | if (err < 0) |
122 | return err; |
123 | |
124 | return 0; |
125 | } |
126 | |
127 | static int rts5209_card_power_off(struct rtsx_pcr *pcr, int card) |
128 | { |
129 | u8 pwr_mask, pwr_off; |
130 | |
131 | pwr_mask = SD_POWER_MASK; |
132 | pwr_off = SD_POWER_OFF; |
133 | |
134 | if (pcr->ms_pmos && (card == RTSX_MS_CARD)) { |
135 | pwr_mask = MS_POWER_MASK; |
136 | pwr_off = MS_POWER_OFF; |
137 | } |
138 | |
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); |
145 | } |
146 | |
147 | static int rts5209_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) |
148 | { |
149 | int err; |
150 | |
151 | if (voltage == OUTPUT_3V3) { |
152 | err = rtsx_pci_write_register(pcr, |
153 | SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D); |
154 | if (err < 0) |
155 | return err; |
156 | err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24); |
157 | if (err < 0) |
158 | return err; |
159 | } else if (voltage == OUTPUT_1V8) { |
160 | err = rtsx_pci_write_register(pcr, |
161 | SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B); |
162 | if (err < 0) |
163 | return err; |
164 | err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24); |
165 | if (err < 0) |
166 | return err; |
167 | } else { |
168 | return -EINVAL; |
169 | } |
170 | |
171 | return 0; |
172 | } |
173 | |
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, |
184 | .cd_deglitch = NULL, |
185 | .conv_clk_and_div_n = NULL, |
186 | }; |
187 | |
188 | /* SD Pull Control Enable: |
189 | * SD_DAT[3:0] ==> pull up |
190 | * SD_CD ==> pull up |
191 | * SD_WP ==> pull up |
192 | * SD_CMD ==> pull up |
193 | * SD_CLK ==> pull down |
194 | */ |
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), |
199 | 0, |
200 | }; |
201 | |
202 | /* SD Pull Control Disable: |
203 | * SD_DAT[3:0] ==> pull down |
204 | * SD_CD ==> pull up |
205 | * SD_WP ==> pull down |
206 | * SD_CMD ==> pull down |
207 | * SD_CLK ==> pull down |
208 | */ |
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), |
213 | 0, |
214 | }; |
215 | |
216 | /* MS Pull Control Enable: |
217 | * MS CD ==> pull up |
218 | * others ==> pull down |
219 | */ |
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), |
224 | 0, |
225 | }; |
226 | |
227 | /* MS Pull Control Disable: |
228 | * MS CD ==> pull up |
229 | * others ==> pull down |
230 | */ |
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), |
235 | 0, |
236 | }; |
237 | |
238 | void rts5209_init_params(struct rtsx_pcr *pcr) |
239 | { |
240 | pcr->extra_caps = EXTRA_CAPS_SD_SDR50 | |
241 | EXTRA_CAPS_SD_SDR104 | EXTRA_CAPS_MMC_8BIT; |
242 | pcr->num_slots = 2; |
243 | pcr->ops = &rts5209_pcr_ops; |
244 | |
245 | rts5209_init_vendor_cfg(pcr); |
246 | |
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; |
252 | } |
253 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9