| /* |
| * Copyright (c) 2014 Google, Inc |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <spi.h> |
| #include <spi_flash.h> |
| #include <dm/device-internal.h> |
| #include "sf_internal.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf) |
| { |
| return sf_get_ops(dev)->read(dev, offset, len, buf); |
| } |
| |
| int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len, |
| const void *buf) |
| { |
| return sf_get_ops(dev)->write(dev, offset, len, buf); |
| } |
| |
| int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len) |
| { |
| return sf_get_ops(dev)->erase(dev, offset, len); |
| } |
| |
| /* |
| * TODO(sjg@chromium.org): This is an old-style function. We should remove |
| * it when all SPI flash drivers use dm |
| */ |
| struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, |
| unsigned int max_hz, unsigned int spi_mode) |
| { |
| struct udevice *dev; |
| |
| if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev)) |
| return NULL; |
| |
| return dev_get_uclass_priv(dev); |
| } |
| |
| void spi_flash_free(struct spi_flash *flash) |
| { |
| device_remove(flash->spi->dev); |
| } |
| |
| int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, |
| unsigned int max_hz, unsigned int spi_mode, |
| struct udevice **devp) |
| { |
| struct spi_slave *slave; |
| struct udevice *bus; |
| char *str; |
| int ret; |
| |
| #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF) |
| str = "spi_flash"; |
| #else |
| char name[30]; |
| |
| snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs); |
| str = strdup(name); |
| #endif |
| ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode, |
| "spi_flash_std", str, &bus, &slave); |
| if (ret) |
| return ret; |
| |
| *devp = slave->dev; |
| return 0; |
| } |
| |
| static int spi_flash_post_bind(struct udevice *dev) |
| { |
| #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
| struct dm_spi_flash_ops *ops = sf_get_ops(dev); |
| static int reloc_done; |
| |
| if (!reloc_done) { |
| if (ops->read) |
| ops->read += gd->reloc_off; |
| if (ops->write) |
| ops->write += gd->reloc_off; |
| if (ops->erase) |
| ops->erase += gd->reloc_off; |
| |
| reloc_done++; |
| } |
| #endif |
| return 0; |
| } |
| |
| UCLASS_DRIVER(spi_flash) = { |
| .id = UCLASS_SPI_FLASH, |
| .name = "spi_flash", |
| .post_bind = spi_flash_post_bind, |
| .per_device_auto_alloc_size = sizeof(struct spi_flash), |
| }; |