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