]> Git Repo - u-boot.git/blame - drivers/mtd/spi/sf_probe.c
sf: sf_probe: Remove spi_slave pointer argument
[u-boot.git] / drivers / mtd / spi / sf_probe.c
CommitLineData
4d5e29a6
JT
1/*
2 * SPI flash probing
3 *
4 * Copyright (C) 2008 Atmel Corporation
5 * Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
6 * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
7 *
0c88a84a 8 * SPDX-License-Identifier: GPL-2.0+
4d5e29a6
JT
9 */
10
11#include <common.h>
fbb09918 12#include <dm.h>
ae242cbf 13#include <errno.h>
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JT
14#include <malloc.h>
15#include <spi.h>
16#include <spi_flash.h>
17
898e76c9 18#include "sf_internal.h"
4d5e29a6 19
ae242cbf
SG
20/**
21 * spi_flash_probe_slave() - Probe for a SPI flash device on a bus
22 *
ae242cbf
SG
23 * @flashp: Pointer to place to put flash info, which may be NULL if the
24 * space should be allocated
25 */
bfdb07eb 26int spi_flash_probe_slave(struct spi_flash *flash)
4d5e29a6 27{
bfdb07eb 28 struct spi_slave *spi = flash->spi;
4d4ec992 29 int ret;
4d5e29a6 30
4d4ec992 31 /* Setup spi_slave */
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JT
32 if (!spi) {
33 printf("SF: Failed to set up slave\n");
ae242cbf 34 return -ENODEV;
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JT
35 }
36
4d4ec992 37 /* Claim spi bus */
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JT
38 ret = spi_claim_bus(spi);
39 if (ret) {
40 debug("SF: Failed to claim SPI bus: %d\n", ret);
ae242cbf 41 return ret;
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JT
42 }
43
bfdb07eb 44 ret = spi_flash_scan(flash);
3a1adb62 45 if (ret) {
ae242cbf 46 ret = -EINVAL;
4d4ec992 47 goto err_read_id;
ae242cbf 48 }
4d5e29a6 49
9fe6d871
DS
50#ifdef CONFIG_SPI_FLASH_MTD
51 ret = spi_flash_mtd_register(flash);
52#endif
4d5e29a6 53
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JT
54err_read_id:
55 spi_release_bus(spi);
ae242cbf
SG
56 return ret;
57}
58
fbb09918
SG
59#ifndef CONFIG_DM_SPI_FLASH
60struct spi_flash *spi_flash_probe_tail(struct spi_slave *bus)
ae242cbf
SG
61{
62 struct spi_flash *flash;
63
64 /* Allocate space if needed (not used by sf-uclass */
65 flash = calloc(1, sizeof(*flash));
66 if (!flash) {
67 debug("SF: Failed to allocate spi_flash\n");
68 return NULL;
69 }
70
bfdb07eb
JT
71 flash->spi = bus;
72 if (spi_flash_probe_slave(flash)) {
ae242cbf
SG
73 spi_free_slave(bus);
74 free(flash);
75 return NULL;
76 }
77
78 return flash;
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JT
79}
80
ae242cbf 81struct spi_flash *spi_flash_probe(unsigned int busnum, unsigned int cs,
0efc0249
SG
82 unsigned int max_hz, unsigned int spi_mode)
83{
ae242cbf 84 struct spi_slave *bus;
0efc0249 85
ae242cbf 86 bus = spi_setup_slave(busnum, cs, max_hz, spi_mode);
4fbad92e
PF
87 if (!bus)
88 return NULL;
ae242cbf 89 return spi_flash_probe_tail(bus);
0efc0249
SG
90}
91
92#ifdef CONFIG_OF_SPI_FLASH
93struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node,
94 int spi_node)
95{
ae242cbf 96 struct spi_slave *bus;
0efc0249 97
ae242cbf 98 bus = spi_setup_slave_fdt(blob, slave_node, spi_node);
4fbad92e
PF
99 if (!bus)
100 return NULL;
ae242cbf 101 return spi_flash_probe_tail(bus);
0efc0249
SG
102}
103#endif
104
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JT
105void spi_flash_free(struct spi_flash *flash)
106{
9fe6d871
DS
107#ifdef CONFIG_SPI_FLASH_MTD
108 spi_flash_mtd_unregister();
109#endif
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JT
110 spi_free_slave(flash->spi);
111 free(flash);
112}
fbb09918
SG
113
114#else /* defined CONFIG_DM_SPI_FLASH */
115
116static int spi_flash_std_read(struct udevice *dev, u32 offset, size_t len,
117 void *buf)
118{
e564f054 119 struct spi_flash *flash = dev_get_uclass_priv(dev);
fbb09918
SG
120
121 return spi_flash_cmd_read_ops(flash, offset, len, buf);
122}
123
124int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
125 const void *buf)
126{
e564f054 127 struct spi_flash *flash = dev_get_uclass_priv(dev);
fbb09918 128
074eed51 129#if defined(CONFIG_SPI_FLASH_SST)
1fabefdd 130 if (flash->flags & SNOR_F_SST_WR) {
074eed51
BM
131 if (flash->spi->op_mode_tx & SPI_OPM_TX_BP)
132 return sst_write_bp(flash, offset, len, buf);
133 else
134 return sst_write_wp(flash, offset, len, buf);
135 }
136#endif
137
fbb09918
SG
138 return spi_flash_cmd_write_ops(flash, offset, len, buf);
139}
140
141int spi_flash_std_erase(struct udevice *dev, u32 offset, size_t len)
142{
e564f054 143 struct spi_flash *flash = dev_get_uclass_priv(dev);
fbb09918
SG
144
145 return spi_flash_cmd_erase_ops(flash, offset, len);
146}
147
148int spi_flash_std_probe(struct udevice *dev)
149{
bcbe3d15 150 struct spi_slave *slave = dev_get_parent_priv(dev);
d0cff03e 151 struct dm_spi_slave_platdata *plat = dev_get_parent_platdata(dev);
fbb09918
SG
152 struct spi_flash *flash;
153
e564f054 154 flash = dev_get_uclass_priv(dev);
fbb09918 155 flash->dev = dev;
bfdb07eb 156 flash->spi = slave;
d0cff03e 157 debug("%s: slave=%p, cs=%d\n", __func__, slave, plat->cs);
bfdb07eb 158 return spi_flash_probe_slave(flash);
fbb09918
SG
159}
160
161static const struct dm_spi_flash_ops spi_flash_std_ops = {
162 .read = spi_flash_std_read,
163 .write = spi_flash_std_write,
164 .erase = spi_flash_std_erase,
165};
166
167static const struct udevice_id spi_flash_std_ids[] = {
168 { .compatible = "spi-flash" },
169 { }
170};
171
172U_BOOT_DRIVER(spi_flash_std) = {
173 .name = "spi_flash_std",
174 .id = UCLASS_SPI_FLASH,
175 .of_match = spi_flash_std_ids,
176 .probe = spi_flash_std_probe,
177 .priv_auto_alloc_size = sizeof(struct spi_flash),
178 .ops = &spi_flash_std_ops,
179};
180
181#endif /* CONFIG_DM_SPI_FLASH */
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