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 DECLARE_GLOBAL_DATA_PTR; 15 16 int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf) 17 { 18 return sf_get_ops(dev)->read(dev, offset, len, buf); 19 } 20 21 int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len, 22 const void *buf) 23 { 24 return sf_get_ops(dev)->write(dev, offset, len, buf); 25 } 26 27 int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len) 28 { 29 return sf_get_ops(dev)->erase(dev, offset, len); 30 } 31 32 /* 33 * TODO(sjg@chromium.org): This is an old-style function. We should remove 34 * it when all SPI flash drivers use dm 35 */ 36 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, 37 unsigned int max_hz, unsigned int spi_mode) 38 { 39 struct udevice *dev; 40 41 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev)) 42 return NULL; 43 44 return dev_get_uclass_priv(dev); 45 } 46 47 void spi_flash_free(struct spi_flash *flash) 48 { 49 device_remove(flash->spi->dev, DM_REMOVE_NORMAL); 50 } 51 52 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, 53 unsigned int max_hz, unsigned int spi_mode, 54 struct udevice **devp) 55 { 56 struct spi_slave *slave; 57 struct udevice *bus; 58 char *str; 59 int ret; 60 61 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF) 62 str = "spi_flash"; 63 #else 64 char name[30]; 65 66 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs); 67 str = strdup(name); 68 #endif 69 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode, 70 "spi_flash_std", str, &bus, &slave); 71 if (ret) 72 return ret; 73 74 *devp = slave->dev; 75 return 0; 76 } 77 78 static int spi_flash_post_bind(struct udevice *dev) 79 { 80 #if defined(CONFIG_NEEDS_MANUAL_RELOC) 81 struct dm_spi_flash_ops *ops = sf_get_ops(dev); 82 static int reloc_done; 83 84 if (!reloc_done) { 85 if (ops->read) 86 ops->read += gd->reloc_off; 87 if (ops->write) 88 ops->write += gd->reloc_off; 89 if (ops->erase) 90 ops->erase += gd->reloc_off; 91 92 reloc_done++; 93 } 94 #endif 95 return 0; 96 } 97 98 UCLASS_DRIVER(spi_flash) = { 99 .id = UCLASS_SPI_FLASH, 100 .name = "spi_flash", 101 .post_bind = spi_flash_post_bind, 102 .per_device_auto_alloc_size = sizeof(struct spi_flash), 103 }; 104