mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-05 10:46:15 +09:00
20343ff3ad
Dual flash code in spi are usually take the spi controller to work with dual connected flash devices. Usually these dual connection operation's are referred to flash controller protocol rather with spi controller protocol, these are still present in flash side for the usage of spi-nor controllers. So, this patch remove the dual_flash options or flags in sf which are triggered from spi controller side. Cc: Bin Meng <bmeng.cn@gmail.com> Cc: York Sun <york.sun@nxp.com> Cc: Vignesh R <vigneshr@ti.com> Cc: Mugunthan V N <mugunthanvnm@ti.com> Cc: Michal Simek <michal.simek@xilinx.com> Cc: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Jagan Teki <jagan@openedev.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagan Teki <jagan@openedev.com>
55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* SPI flash interface
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*
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* Copyright (C) 2008 Atmel Corporation
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* Copyright (C) 2010 Reinhard Meyer, EMK Elektronik
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <spi.h>
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static int spi_flash_read_write(struct spi_slave *spi,
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const u8 *cmd, size_t cmd_len,
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const u8 *data_out, u8 *data_in,
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size_t data_len)
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{
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unsigned long flags = SPI_XFER_BEGIN;
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int ret;
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if (data_len == 0)
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flags |= SPI_XFER_END;
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ret = spi_xfer(spi, cmd_len * 8, cmd, NULL, flags);
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if (ret) {
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debug("SF: Failed to send command (%zu bytes): %d\n",
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cmd_len, ret);
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} else if (data_len != 0) {
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ret = spi_xfer(spi, data_len * 8, data_out, data_in,
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SPI_XFER_END);
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if (ret)
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debug("SF: Failed to transfer %zu bytes of data: %d\n",
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data_len, ret);
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}
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return ret;
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}
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int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd,
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size_t cmd_len, void *data, size_t data_len)
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{
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return spi_flash_read_write(spi, cmd, cmd_len, NULL, data, data_len);
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}
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int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len)
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{
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return spi_flash_cmd_read(spi, &cmd, 1, response, len);
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}
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int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len,
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const void *data, size_t data_len)
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{
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return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len);
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}
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