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mtd: spi: Drop sf.c

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spi_write_then_read, will manage to do the respective
spi_xfer based on the tx_buf, rx_buf so drop the
legacy spi_flash_read/write/cm code.

Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Jagan Teki 2019-07-22 17:22:58 +05:30
parent 43084a56b0
commit 210d8ad0fa
3 changed files with 1 additions and 72 deletions
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2
drivers/mtd/spi/Makefile
View File

@ -18,6 +18,6 @@ spi-nor-y += spi-nor-core.o
endif
obj-$(CONFIG_SPI_FLASH) += spi-nor.o
obj-$(CONFIG_SPI_FLASH_DATAFLASH) += sf_dataflash.o sf.o
obj-$(CONFIG_SPI_FLASH_DATAFLASH) += sf_dataflash.o
obj-$(CONFIG_SPI_FLASH_MTD) += sf_mtd.o
obj-$(CONFIG_SPI_FLASH_SANDBOX) += sandbox.o

53
drivers/mtd/spi/sf.c
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@ -1,53 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* SPI flash interface
*
* Copyright (C) 2008 Atmel Corporation
* Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
*/
#include <common.h>
#include <spi.h>
static int spi_flash_read_write(struct spi_slave *spi,
const u8 *cmd, size_t cmd_len,
const u8 *data_out, u8 *data_in,
size_t data_len)
{
unsigned long flags = SPI_XFER_BEGIN;
int ret;
if (data_len == 0)
flags |= SPI_XFER_END;
ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags);
if (ret) {
debug("SF: Failed to send command (%zu bytes): %d\n",
cmd_len, ret);
} else if (data_len != 0) {
ret = spi_xfer(spi, data_len * 8, data_out, data_in,
SPI_XFER_END);
if (ret)
debug("SF: Failed to transfer %zu bytes of data: %d\n",
data_len, ret);
}
return ret;
}
int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
size_t cmd_len, void *data, size_t data_len)
{
return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len);
}
int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len)
{
return spi_flash_cmd_read(spi, &cmd, 1, response, len);
}
int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
const void *data, size_t data_len)
{
return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
}

18
drivers/mtd/spi/sf_internal.h
View File

@ -72,24 +72,6 @@ extern const struct flash_info spi_nor_ids[];
#define JEDEC_MFR(info) ((info)->id[0])
#define JEDEC_ID(info) (((info)->id[1]) << 8 | ((info)->id[2]))
/* Send a single-byte command to the device and read the response */
int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len);
/*
* Send a multi-byte command to the device and read the response. Used
* for flash array reads, etc.
*/
int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
size_t cmd_len, void *data, size_t data_len);
/*
* Send a multi-byte command to the device followed by (optional)
* data. Used for programming the flash array, etc.
*/
int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
const void *data, size_t data_len);
/* Get software write-protect value (BP bits) */
int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash);