From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- drivers/brcm/spi_sf.c | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 drivers/brcm/spi_sf.c (limited to 'drivers/brcm/spi_sf.c') diff --git a/drivers/brcm/spi_sf.c b/drivers/brcm/spi_sf.c new file mode 100644 index 0000000..8bbb09f --- /dev/null +++ b/drivers/brcm/spi_sf.c @@ -0,0 +1,60 @@ +/* + * Copyright (c) 2019-2020, Broadcom + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include + +#include + +#define BITS_PER_BYTE 8 +#define CMD_LEN1 1 + +static int spi_flash_read_write(const uint8_t *cmd, + size_t cmd_len, + const uint8_t *data_out, + uint8_t *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(cmd_len * BITS_PER_BYTE, cmd, NULL, flags); + if (ret) { + ERROR("SF: Failed to send command (%zu bytes): %d\n", + cmd_len, ret); + } else if (data_len != 0) { + ret = spi_xfer(data_len * BITS_PER_BYTE, data_out, + data_in, SPI_XFER_END); + if (ret) + ERROR("SF: Failed to transfer %zu bytes of data: %d\n", + data_len, ret); + } + + return ret; +} + +int spi_flash_cmd_read(const uint8_t *cmd, + size_t cmd_len, + void *data, + size_t data_len) +{ + return spi_flash_read_write(cmd, cmd_len, NULL, data, data_len); +} + +int spi_flash_cmd(uint8_t cmd, void *response, size_t len) +{ + return spi_flash_cmd_read(&cmd, CMD_LEN1, response, len); +} + +int spi_flash_cmd_write(const uint8_t *cmd, + size_t cmd_len, + const void *data, + size_t data_len) +{ + return spi_flash_read_write(cmd, cmd_len, data, NULL, data_len); +} -- cgit v1.2.3