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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2014 Google, Inc
*/
#include <common.h>
#include <dm.h>
#include <spi.h>
#include <spi_flash.h>
#include <dm/device-internal.h>
#include "sf_internal.h"
DECLARE_GLOBAL_DATA_PTR;
int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
{
return log_ret(sf_get_ops(dev)->read(dev, offset, len, buf));
}
int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
const void *buf)
{
return log_ret(sf_get_ops(dev)->write(dev, offset, len, buf));
}
int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
{
return log_ret(sf_get_ops(dev)->erase(dev, offset, len));
}
int spl_flash_get_sw_write_prot(struct udevice *dev)
{
struct dm_spi_flash_ops *ops = sf_get_ops(dev);
if (!ops->get_sw_write_prot)
return -ENOSYS;
return log_ret(ops->get_sw_write_prot(dev));
}
/*
* TODO(sjg@chromium.org): This is an old-style function. We should remove
* it when all SPI flash drivers use dm
*/
struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode)
{
struct udevice *dev;
if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
return NULL;
return dev_get_uclass_priv(dev);
}
void spi_flash_free(struct spi_flash *flash)
{
device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
}
int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
unsigned int max_hz, unsigned int spi_mode,
struct udevice **devp)
{
struct spi_slave *slave;
struct udevice *bus;
char *str;
int ret;
#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF)
str = "spi_flash";
#else
char name[30];
snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
str = strdup(name);
#endif
ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
"spi_flash_std", str, &bus, &slave);
if (ret)
return ret;
*devp = slave->dev;
return 0;
}
static int spi_flash_post_bind(struct udevice *dev)
{
#if defined(CONFIG_NEEDS_MANUAL_RELOC)
struct dm_spi_flash_ops *ops = sf_get_ops(dev);
static int reloc_done;
if (!reloc_done) {
if (ops->read)
ops->read += gd->reloc_off;
if (ops->write)
ops->write += gd->reloc_off;
if (ops->erase)
ops->erase += gd->reloc_off;
reloc_done++;
}
#endif
return 0;
}
UCLASS_DRIVER(spi_flash) = {
.id = UCLASS_SPI_FLASH,
.name = "spi_flash",
.post_bind = spi_flash_post_bind,
.per_device_auto_alloc_size = sizeof(struct spi_flash),
};
|
