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