1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
|
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Hanumath Prasad <hanumath.prasad@stericsson.com>
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/kernel.h>
#include <linux/gpio.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
#include <linux/mmc/host.h>
#include <linux/platform_device.h>
#include <asm/mach-types.h>
#include <plat/ste_dma40.h>
#include <mach/devices.h>
#include <mach/hardware.h>
#include "devices-db8500.h"
#include "board-mop500.h"
#include "ste-dma40-db8500.h"
/*
* v2 has a new version of this block that need to be forced, the number found
* in hardware is incorrect
*/
#define U8500_SDI_V2_PERIPHID 0x10480180
/*
* SDI 0 (MicroSD slot)
*/
/* GPIO pins used by the sdi0 level shifter */
static int sdi0_en = -1;
static int sdi0_vsel = -1;
static int mop500_sdi0_ios_handler(struct device *dev, struct mmc_ios *ios)
{
switch (ios->power_mode) {
case MMC_POWER_UP:
case MMC_POWER_ON:
/*
* Level shifter voltage should depend on vdd to when deciding
* on either 1.8V or 2.9V. Once the decision has been made the
* level shifter must be disabled and re-enabled with a changed
* select signal in order to switch the voltage. Since there is
* no framework support yet for indicating 1.8V in vdd, use the
* default 2.9V.
*/
gpio_direction_output(sdi0_vsel, 0);
gpio_direction_output(sdi0_en, 1);
break;
case MMC_POWER_OFF:
gpio_direction_output(sdi0_vsel, 0);
gpio_direction_output(sdi0_en, 0);
break;
}
return 0;
}
#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi0_dma_cfg_rx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_PERIPH_TO_MEM,
.src_dev_type = DB8500_DMA_DEV29_SD_MM0_RX,
.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
static struct stedma40_chan_cfg mop500_sdi0_dma_cfg_tx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_MEM_TO_PERIPH,
.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
.dst_dev_type = DB8500_DMA_DEV29_SD_MM0_TX,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
#endif
static struct mmci_platform_data mop500_sdi0_data = {
.ios_handler = mop500_sdi0_ios_handler,
.ocr_mask = MMC_VDD_29_30,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA |
MMC_CAP_SD_HIGHSPEED |
MMC_CAP_MMC_HIGHSPEED,
.gpio_wp = -1,
.sigdir = MCI_ST_FBCLKEN |
MCI_ST_CMDDIREN |
MCI_ST_DATA0DIREN |
MCI_ST_DATA2DIREN,
#ifdef CONFIG_STE_DMA40
.dma_filter = stedma40_filter,
.dma_rx_param = &mop500_sdi0_dma_cfg_rx,
.dma_tx_param = &mop500_sdi0_dma_cfg_tx,
#endif
};
static void sdi0_configure(void)
{
int ret;
ret = gpio_request(sdi0_en, "level shifter enable");
if (!ret)
ret = gpio_request(sdi0_vsel,
"level shifter 1v8-3v select");
if (ret) {
pr_warning("unable to config sdi0 gpios for level shifter.\n");
return;
}
/* Select the default 2.9V and enable level shifter */
gpio_direction_output(sdi0_vsel, 0);
gpio_direction_output(sdi0_en, 1);
/* Add the device, force v2 to subrevision 1 */
db8500_add_sdi0(&mop500_sdi0_data, U8500_SDI_V2_PERIPHID);
}
void mop500_sdi_tc35892_init(void)
{
mop500_sdi0_data.gpio_cd = GPIO_SDMMC_CD;
sdi0_en = GPIO_SDMMC_EN;
sdi0_vsel = GPIO_SDMMC_1V8_3V_SEL;
sdi0_configure();
}
/*
* SDI1 (SDIO WLAN)
*/
#ifdef CONFIG_STE_DMA40
static struct stedma40_chan_cfg sdi1_dma_cfg_rx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_PERIPH_TO_MEM,
.src_dev_type = DB8500_DMA_DEV32_SD_MM1_RX,
.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
static struct stedma40_chan_cfg sdi1_dma_cfg_tx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_MEM_TO_PERIPH,
.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
.dst_dev_type = DB8500_DMA_DEV32_SD_MM1_TX,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
#endif
static struct mmci_platform_data mop500_sdi1_data = {
.ocr_mask = MMC_VDD_29_30,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA,
.gpio_cd = -1,
.gpio_wp = -1,
#ifdef CONFIG_STE_DMA40
.dma_filter = stedma40_filter,
.dma_rx_param = &sdi1_dma_cfg_rx,
.dma_tx_param = &sdi1_dma_cfg_tx,
#endif
};
/*
* SDI 2 (POP eMMC, not on DB8500ed)
*/
#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi2_dma_cfg_rx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_PERIPH_TO_MEM,
.src_dev_type = DB8500_DMA_DEV28_SD_MM2_RX,
.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
static struct stedma40_chan_cfg mop500_sdi2_dma_cfg_tx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_MEM_TO_PERIPH,
.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
.dst_dev_type = DB8500_DMA_DEV28_SD_MM2_TX,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
#endif
static struct mmci_platform_data mop500_sdi2_data = {
.ocr_mask = MMC_VDD_165_195,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
MMC_CAP_MMC_HIGHSPEED,
.gpio_cd = -1,
.gpio_wp = -1,
#ifdef CONFIG_STE_DMA40
.dma_filter = stedma40_filter,
.dma_rx_param = &mop500_sdi2_dma_cfg_rx,
.dma_tx_param = &mop500_sdi2_dma_cfg_tx,
#endif
};
/*
* SDI 4 (on-board eMMC)
*/
#ifdef CONFIG_STE_DMA40
struct stedma40_chan_cfg mop500_sdi4_dma_cfg_rx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_PERIPH_TO_MEM,
.src_dev_type = DB8500_DMA_DEV42_SD_MM4_RX,
.dst_dev_type = STEDMA40_DEV_DST_MEMORY,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
static struct stedma40_chan_cfg mop500_sdi4_dma_cfg_tx = {
.mode = STEDMA40_MODE_LOGICAL,
.dir = STEDMA40_MEM_TO_PERIPH,
.src_dev_type = STEDMA40_DEV_SRC_MEMORY,
.dst_dev_type = DB8500_DMA_DEV42_SD_MM4_TX,
.src_info.data_width = STEDMA40_WORD_WIDTH,
.dst_info.data_width = STEDMA40_WORD_WIDTH,
};
#endif
static struct mmci_platform_data mop500_sdi4_data = {
.ocr_mask = MMC_VDD_29_30,
.f_max = 50000000,
.capabilities = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA |
MMC_CAP_MMC_HIGHSPEED,
.gpio_cd = -1,
.gpio_wp = -1,
#ifdef CONFIG_STE_DMA40
.dma_filter = stedma40_filter,
.dma_rx_param = &mop500_sdi4_dma_cfg_rx,
.dma_tx_param = &mop500_sdi4_dma_cfg_tx,
#endif
};
void __init mop500_sdi_init(void)
{
/* PoP:ed eMMC */
db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
/* On-board eMMC */
db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
/*
* On boards with the TC35892 GPIO expander, sdi0 will finally
* be added when the TC35892 initializes and calls
* mop500_sdi_tc35892_init() above.
*/
}
void __init snowball_sdi_init(void)
{
/* On Snowball MMC_CAP_SD_HIGHSPEED isn't supported (Hardware issue?) */
mop500_sdi0_data.capabilities &= ~MMC_CAP_SD_HIGHSPEED;
/* On-board eMMC */
db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
/* External Micro SD slot */
mop500_sdi0_data.gpio_cd = SNOWBALL_SDMMC_CD_GPIO;
mop500_sdi0_data.cd_invert = true;
sdi0_en = SNOWBALL_SDMMC_EN_GPIO;
sdi0_vsel = SNOWBALL_SDMMC_1V8_3V_GPIO;
sdi0_configure();
}
void __init hrefv60_sdi_init(void)
{
/* PoP:ed eMMC */
db8500_add_sdi2(&mop500_sdi2_data, U8500_SDI_V2_PERIPHID);
/* On-board eMMC */
db8500_add_sdi4(&mop500_sdi4_data, U8500_SDI_V2_PERIPHID);
/* External Micro SD slot */
mop500_sdi0_data.gpio_cd = HREFV60_SDMMC_CD_GPIO;
sdi0_en = HREFV60_SDMMC_EN_GPIO;
sdi0_vsel = HREFV60_SDMMC_1V8_3V_GPIO;
sdi0_configure();
/* WLAN SDIO channel */
db8500_add_sdi1(&mop500_sdi1_data, U8500_SDI_V2_PERIPHID);
}
|
