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drivers: flash: Read/write arbitary commands via ex_op API #98619

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drivers: flash: Read/write arbitary commands via ex_op API #98619

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48 changes: 48 additions & 0 deletions include/zephyr/drivers/flash.h
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Original file line number Diff line number Diff line change
Expand Up @@ -697,6 +697,54 @@ enum flash_ex_op_types {
* Reset flash device.
*/
FLASH_EX_OP_RESET = 0,
/*
* Issue a command to read from flash device.
*/
FLASH_EX_OP_CMD_READ = 1,
/*
* Issue a command to write to flash device.
*/
FLASH_EX_OP_CMD_WRITE = 2,
};

/**
* @brief Input for FLASH_EX_OP_CMD_READ extra flash operations
*/
struct flash_ex_op_cmd_read_in {
/* register or command to read */
uint8_t cmd;
/* buffer to write the read data to */
uint8_t *read_buffer;
/* length of above buffer */
size_t buffer_len;
};

/**
* @brief Output from FLASH_EX_OP_CMD_READ extra flash operations
*/
struct flash_ex_op_cmd_read_out {
/* bytes actually read and stored in the input buffer */
size_t read_len;
};

/**
* @brief Input for FLASH_EX_OP_CMD_WRITE extra flash operations
*/
struct flash_ex_op_cmd_write_in {
/* register or command to write */
uint8_t cmd;
/* buffer with the data to write */
uint8_t *write_buffer;
/* length of above buffer */
size_t buffer_len;
};

/**
* @brief Output from FLASH_EX_OP_CMD_WRITE extra flash operations
*/
struct flash_ex_op_cmd_write_out {
/* bytes actually written from input buffer */
size_t write_len;
};

static inline int z_impl_flash_ex_op(const struct device *dev, uint16_t code,
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