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