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
|
/*
* Copyright (C) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <mmc.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/root.h>
#include "mmc_private.h"
struct mmc *mmc_get_mmc_dev(struct udevice *dev)
{
struct mmc_uclass_priv *upriv;
if (!device_active(dev))
return NULL;
upriv = dev_get_uclass_priv(dev);
return upriv->mmc;
}
#ifdef CONFIG_BLK
struct mmc *find_mmc_device(int dev_num)
{
struct udevice *dev, *mmc_dev;
int ret;
ret = blk_get_device(IF_TYPE_MMC, dev_num, &dev);
if (ret) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
printf("MMC Device %d not found\n", dev_num);
#endif
return NULL;
}
mmc_dev = dev_get_parent(dev);
return mmc_get_mmc_dev(mmc_dev);
}
int get_mmc_num(void)
{
return max(blk_find_max_devnum(IF_TYPE_MMC), 0);
}
int mmc_get_next_devnum(void)
{
int ret;
ret = get_mmc_num();
if (ret < 0)
return ret;
return ret + 1;
}
struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
{
struct blk_desc *desc;
struct udevice *dev;
device_find_first_child(mmc->dev, &dev);
if (!dev)
return NULL;
desc = dev_get_uclass_platdata(dev);
return desc;
}
void mmc_do_preinit(void)
{
struct udevice *dev;
struct uclass *uc;
int ret;
ret = uclass_get(UCLASS_MMC, &uc);
if (ret)
return;
uclass_foreach_dev(dev, uc) {
struct mmc *m = mmc_get_mmc_dev(dev);
if (!m)
continue;
#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
mmc_set_preinit(m, 1);
#endif
if (m->preinit)
mmc_start_init(m);
}
}
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
void print_mmc_devices(char separator)
{
struct udevice *dev;
char *mmc_type;
bool first = true;
for (uclass_first_device(UCLASS_MMC, &dev);
dev;
uclass_next_device(&dev)) {
struct mmc *m = mmc_get_mmc_dev(dev);
if (!first) {
printf("%c", separator);
if (separator != '\n')
puts(" ");
}
if (m->has_init)
mmc_type = IS_SD(m) ? "SD" : "eMMC";
else
mmc_type = NULL;
printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
if (mmc_type)
printf(" (%s)", mmc_type);
}
printf("\n");
}
#else
void print_mmc_devices(char separator) { }
#endif
int mmc_bind(struct udevice *dev, struct mmc *mmc, const struct mmc_config *cfg)
{
struct blk_desc *bdesc;
struct udevice *bdev;
int ret;
ret = blk_create_devicef(dev, "mmc_blk", "blk", IF_TYPE_MMC, -1, 512,
0, &bdev);
if (ret) {
debug("Cannot create block device\n");
return ret;
}
bdesc = dev_get_uclass_platdata(bdev);
mmc->cfg = cfg;
mmc->priv = dev;
/* the following chunk was from mmc_register() */
/* Setup dsr related values */
mmc->dsr_imp = 0;
mmc->dsr = 0xffffffff;
/* Setup the universal parts of the block interface just once */
bdesc->removable = 1;
/* setup initial part type */
bdesc->part_type = cfg->part_type;
mmc->dev = dev;
return 0;
}
int mmc_unbind(struct udevice *dev)
{
struct udevice *bdev;
device_find_first_child(dev, &bdev);
if (bdev) {
device_remove(bdev);
device_unbind(bdev);
}
return 0;
}
static int mmc_select_hwpart(struct udevice *bdev, int hwpart)
{
struct udevice *mmc_dev = dev_get_parent(bdev);
struct mmc *mmc = mmc_get_mmc_dev(mmc_dev);
struct blk_desc *desc = dev_get_uclass_platdata(bdev);
int ret;
if (desc->hwpart == hwpart)
return 0;
if (mmc->part_config == MMCPART_NOAVAILABLE)
return -EMEDIUMTYPE;
ret = mmc_switch_part(mmc, hwpart);
if (ret)
return ret;
return 0;
}
static const struct blk_ops mmc_blk_ops = {
.read = mmc_bread,
#ifndef CONFIG_SPL_BUILD
.write = mmc_bwrite,
#endif
.select_hwpart = mmc_select_hwpart,
};
U_BOOT_DRIVER(mmc_blk) = {
.name = "mmc_blk",
.id = UCLASS_BLK,
.ops = &mmc_blk_ops,
};
#endif /* CONFIG_BLK */
U_BOOT_DRIVER(mmc) = {
.name = "mmc",
.id = UCLASS_MMC,
};
UCLASS_DRIVER(mmc) = {
.id = UCLASS_MMC,
.name = "mmc",
.flags = DM_UC_FLAG_SEQ_ALIAS,
.per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
};
|
