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