1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright (c) 2014 Google, Inc 4 */ 5 6 #include <common.h> 7 #include <dm.h> 8 #include <spi.h> 9 #include <spi_flash.h> 10 #include <dm/device-internal.h> 11 #include "sf_internal.h" 12 13 DECLARE_GLOBAL_DATA_PTR; 14 15 int spi_flash_read_dm(struct udevice *dev, u32 offset, size_t len, void *buf) 16 { 17 return sf_get_ops(dev)->read(dev, offset, len, buf); 18 } 19 20 int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len, 21 const void *buf) 22 { 23 return sf_get_ops(dev)->write(dev, offset, len, buf); 24 } 25 26 int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len) 27 { 28 return sf_get_ops(dev)->erase(dev, offset, len); 29 } 30 31 /* 32 * TODO(sjg@chromium.org): This is an old-style function. We should remove 33 * it when all SPI flash drivers use dm 34 */ 35 struct spi_flash *spi_flash_probe(unsigned int bus, unsigned int cs, 36 unsigned int max_hz, unsigned int spi_mode) 37 { 38 struct udevice *dev; 39 40 if (spi_flash_probe_bus_cs(bus, cs, max_hz, spi_mode, &dev)) 41 return NULL; 42 43 return dev_get_uclass_priv(dev); 44 } 45 46 void spi_flash_free(struct spi_flash *flash) 47 { 48 device_remove(flash->spi->dev, DM_REMOVE_NORMAL); 49 } 50 51 int spi_flash_probe_bus_cs(unsigned int busnum, unsigned int cs, 52 unsigned int max_hz, unsigned int spi_mode, 53 struct udevice **devp) 54 { 55 struct spi_slave *slave; 56 struct udevice *bus; 57 char *str; 58 int ret; 59 60 #if defined(CONFIG_SPL_BUILD) && defined(CONFIG_USE_TINY_PRINTF) 61 str = "spi_flash"; 62 #else 63 char name[30]; 64 65 snprintf(name, sizeof(name), "spi_flash@%d:%d", busnum, cs); 66 str = strdup(name); 67 #endif 68 ret = spi_get_bus_and_cs(busnum, cs, max_hz, spi_mode, 69 "spi_flash_std", str, &bus, &slave); 70 if (ret) 71 return ret; 72 73 *devp = slave->dev; 74 return 0; 75 } 76 77 static int spi_flash_post_bind(struct udevice *dev) 78 { 79 #if defined(CONFIG_NEEDS_MANUAL_RELOC) 80 struct dm_spi_flash_ops *ops = sf_get_ops(dev); 81 static int reloc_done; 82 83 if (!reloc_done) { 84 if (ops->read) 85 ops->read += gd->reloc_off; 86 if (ops->write) 87 ops->write += gd->reloc_off; 88 if (ops->erase) 89 ops->erase += gd->reloc_off; 90 91 reloc_done++; 92 } 93 #endif 94 return 0; 95 } 96 97 UCLASS_DRIVER(spi_flash) = { 98 .id = UCLASS_SPI_FLASH, 99 .name = "spi_flash", 100 .post_bind = spi_flash_post_bind, 101 .per_device_auto_alloc_size = sizeof(struct spi_flash), 102 }; 103