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
spl_flash_get_sw_write_prot(struct udevice * dev)31 int spl_flash_get_sw_write_prot(struct udevice *dev)
32 {
33 struct dm_spi_flash_ops *ops = sf_get_ops(dev);
34
35 if (!ops->get_sw_write_prot)
36 return -ENOSYS;
37 return log_ret(ops->get_sw_write_prot(dev));
38 }
39
40 /*
41 * TODO(sjg@chromium.org): This is an old-style function. We should remove
42 * it when all SPI flash drivers use dm
43 */
spi_flash_probe(unsigned int bus,unsigned int cs,unsigned int max_hz,unsigned int spi_mode)44 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
45 unsigned int max_hz, unsigned int spi_mode)
46 {
47 struct udevice *dev;
48
49 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
50 return NULL;
51
52 return dev_get_uclass_priv(dev);
53 }
54
spi_flash_free(struct spi_flash * flash)55 void spi_flash_free(struct spi_flash *flash)
56 {
57 device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
58 }
59
spi_flash_probe_bus_cs(unsigned int busnum,unsigned int cs,unsigned int max_hz,unsigned int spi_mode,struct udevice ** devp)60 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
61 unsigned int max_hz, unsigned int spi_mode,
62 struct udevice **devp)
63 {
64 struct spi_slave *slave;
65 struct udevice *bus;
66 char *str;
67 int ret;
68
69 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF)
70 str = "spi_flash";
71 #else
72 char name[30];
73
74 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
75 str = strdup(name);
76 #endif
77 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
78 "spi_flash_std", str, &bus, &slave);
79 if (ret)
80 return ret;
81
82 *devp = slave->dev;
83 return 0;
84 }
85
spi_flash_post_bind(struct udevice * dev)86 static int spi_flash_post_bind(struct udevice *dev)
87 {
88 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
89 struct dm_spi_flash_ops *ops = sf_get_ops(dev);
90 static int reloc_done;
91
92 if (!reloc_done) {
93 if (ops->read)
94 ops->read += gd->reloc_off;
95 if (ops->write)
96 ops->write += gd->reloc_off;
97 if (ops->erase)
98 ops->erase += gd->reloc_off;
99
100 reloc_done++;
101 }
102 #endif
103 return 0;
104 }
105
106 UCLASS_DRIVER(spi_flash) = {
107 .id = UCLASS_SPI_FLASH,
108 .name = "spi_flash",
109 .post_bind = spi_flash_post_bind,
110 .per_device_auto_alloc_size = sizeof(struct spi_flash),
111 };
112