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 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 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 sf_get_ops(dev)->erase(dev, offset, len);
29 }
30
31 /*
32 * TODO(sjg@chromium.org): This is an old-style function. We should remove
33 * it when all SPI flash drivers use dm
34 */
spi_flash_probe(unsigned int bus,unsigned int cs,unsigned int max_hz,unsigned int spi_mode)35 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
36 unsigned int max_hz, unsigned int spi_mode)
37 {
38 struct udevice *dev;
39
40 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
41 return NULL;
42
43 return dev_get_uclass_priv(dev);
44 }
45
spi_flash_free(struct spi_flash * flash)46 void spi_flash_free(struct spi_flash *flash)
47 {
48 device_remove(flash->spi->dev, DM_REMOVE_NORMAL);
49 }
50
spi_flash_probe_bus_cs(unsigned int busnum,unsigned int cs,unsigned int max_hz,unsigned int spi_mode,struct udevice ** devp)51 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
52 unsigned int max_hz, unsigned int spi_mode,
53 struct udevice **devp)
54 {
55 struct spi_slave *slave;
56 struct udevice *bus;
57 char *str;
58 int ret;
59
60 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF)
61 str = "spi_flash";
62 #else
63 char name[30];
64
65 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
66 str = strdup(name);
67 #endif
68 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
69 "spi_flash_std", str, &bus, &slave);
70 if (ret)
71 return ret;
72
73 *devp = slave->dev;
74 return 0;
75 }
76
spi_flash_post_bind(struct udevice * dev)77 static int spi_flash_post_bind(struct udevice *dev)
78 {
79 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
80 struct dm_spi_flash_ops *ops = sf_get_ops(dev);
81 static int reloc_done;
82
83 if (!reloc_done) {
84 if (ops->read)
85 ops->read += gd->reloc_off;
86 if (ops->write)
87 ops->write += gd->reloc_off;
88 if (ops->erase)
89 ops->erase += gd->reloc_off;
90
91 reloc_done++;
92 }
93 #endif
94 return 0;
95 }
96
97 UCLASS_DRIVER(spi_flash) = {
98 .id = UCLASS_SPI_FLASH,
99 .name = "spi_flash",
100 .post_bind = spi_flash_post_bind,
101 .per_device_auto_alloc_size = sizeof(struct spi_flash),
102 };
103