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 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 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 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 */ 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 45 void spi_flash_free(struct spi_flash *flash) 46 { 47 spi_flash_remove(flash->spi->dev); 48 } 49 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 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