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
spi_flash_read_dm(struct udevice * dev,u32 offset,size_t len,void * buf)14 int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf)
15 {
16 return sf_get_ops(dev)->read(dev, offset, len, buf);
17 }
18
spi_flash_write_dm(struct udevice * dev,u32 offset,size_t len,const void * buf)19 int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
20 const void *buf)
21 {
22 return sf_get_ops(dev)->write(dev, offset, len, buf);
23 }
24
spi_flash_erase_dm(struct udevice * dev,u32 offset,size_t len)25 int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
26 {
27 return sf_get_ops(dev)->erase(dev, offset, len);
28 }
29
30 /*
31 * TODO(sjg@chromium.org): This is an old-style function. We should remove
32 * it when all SPI flash drivers use dm
33 */
spi_flash_probe(unsigned int bus,unsigned int cs,unsigned int max_hz,unsigned int spi_mode)34 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs,
35 unsigned int max_hz, unsigned int spi_mode)
36 {
37 struct udevice *dev;
38
39 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev))
40 return NULL;
41
42 return dev_get_uclass_priv(dev);
43 }
44
spi_flash_free(struct spi_flash * flash)45 void spi_flash_free(struct spi_flash *flash)
46 {
47 spi_flash_remove(flash->spi->dev);
48 }
49
spi_flash_probe_bus_cs(unsigned int busnum,unsigned int cs,unsigned int max_hz,unsigned int spi_mode,struct udevice ** devp)50 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs,
51 unsigned int max_hz, unsigned int spi_mode,
52 struct udevice **devp)
53 {
54 struct spi_slave *slave;
55 struct udevice *bus;
56 char name[30], *str;
57 int ret;
58
59 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs);
60 str = strdup(name);
61 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode,
62 "spi_flash_std", str, &bus, &slave);
63 if (ret)
64 return ret;
65
66 *devp = slave->dev;
67 return 0;
68 }
69
spi_flash_remove(struct udevice * dev)70 int spi_flash_remove(struct udevice *dev)
71 {
72 return device_remove(dev);
73 }
74
75 UCLASS_DRIVER(spi_flash) = {
76 .id = UCLASS_SPI_FLASH,
77 .name = "spi_flash",
78 .per_device_auto_alloc_size = sizeof(struct spi_flash),
79 };
80