1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (c) 2014 Google, Inc
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <spi.h>
9 #include <spi_flash.h>
10 #include <dm/device-internal.h>
11 #include "sf_internal.h"
12
13 DECLARE_GLOBAL_DATA_PTR;
14
spi_flash_read_dm(struct udevice * dev,u32 offset,size_t len,void * buf)15 int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
16 {
17 return log_ret(sf_get_ops(dev)->read(dev, offset, len, buf));
18 }
19
spi_flash_write_dm(struct udevice * dev,u32 offset,size_t len,const void * buf)20 int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
21 const void *buf)
22 {
23 return log_ret(sf_get_ops(dev)->write(dev, offset, len, buf));
24 }
25
spi_flash_erase_dm(struct udevice * dev,u32 offset,size_t len)26 int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
27 {
28 return log_ret(sf_get_ops(dev)->erase(dev, offset, len));
29 }
30
spi_flash_ctrl_wlock_dm(struct udevice * dev,u32 offset,size_t len)31 int spi_flash_ctrl_wlock_dm(struct udevice *dev, u32 offset, size_t len)
32 {
33 return log_ret(sf_get_ops(dev)->flash_ctrl_wlock(dev, offset, len));
34 }
35
spi_flash_ctrl_wunlock_dm(struct udevice * dev,u32 offset,size_t len)36 int spi_flash_ctrl_wunlock_dm(struct udevice *dev, u32 offset, size_t len)
37 {
38 return log_ret(sf_get_ops(dev)->flash_ctrl_wunlock(dev, offset, len));
39 }
40
spl_flash_get_sw_write_prot(struct udevice * dev)41 int spl_flash_get_sw_write_prot(struct udevice *dev)
42 {
43 struct dm_spi_flash_ops *ops = sf_get_ops(dev);
44
45 if (!ops->get_sw_write_prot)
46 return -ENOSYS;
47 return log_ret(ops->get_sw_write_prot(dev));
48 }
49
50 /*
51 * TODO(sjg@chromium.org): This is an old-style function. We should remove
52 * it when all SPI flash drivers use dm
53 */
spi_flash_probe(unsigned int bus,unsigned int cs,unsigned int max_hz,unsigned int spi_mode)54 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
55 unsigned int max_hz, unsigned int spi_mode)
56 {
57 struct udevice *dev;
58
59 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
60 return NULL;
61
62 return dev_get_uclass_priv(dev);
63 }
64
spi_flash_free(struct spi_flash * flash)65 void spi_flash_free(struct spi_flash *flash)
66 {
67 device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
68 }
69
spi_flash_probe_bus_cs(unsigned int busnum,unsigned int cs,unsigned int max_hz,unsigned int spi_mode,struct udevice ** devp)70 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
71 unsigned int max_hz, unsigned int spi_mode,
72 struct udevice **devp)
73 {
74 struct spi_slave *slave;
75 struct udevice *bus;
76 char *str;
77 int ret;
78
79 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF)
80 str = "spi_flash";
81 #else
82 char name[30];
83
84 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
85 str = strdup(name);
86 #endif
87 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
88 "spi_flash_std", str, &bus, &slave);
89 if (ret)
90 return ret;
91
92 *devp = slave->dev;
93 return 0;
94 }
95
spi_flash_post_bind(struct udevice * dev)96 static int spi_flash_post_bind(struct udevice *dev)
97 {
98 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
99 struct dm_spi_flash_ops *ops = sf_get_ops(dev);
100 static int reloc_done;
101
102 if (!reloc_done) {
103 if (ops->read)
104 ops->read += gd->reloc_off;
105 if (ops->write)
106 ops->write += gd->reloc_off;
107 if (ops->erase)
108 ops->erase += gd->reloc_off;
109
110 reloc_done++;
111 }
112 #endif
113 return 0;
114 }
115
116 UCLASS_DRIVER(spi_flash) = {
117 .id = UCLASS_SPI_FLASH,
118 .name = "spi_flash",
119 .post_bind = spi_flash_post_bind,
120 .per_device_auto_alloc_size = sizeof(struct spi_flash),
121 };
122