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drivers/i2c/target/eeprom_target: Add buffer mode callback function

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Add the callback functions of buf_write_received and buf_read_requested
to support buffer mode.

Signed-off-by: Tim Lin <tim2.lin@ite.corp-partner.google.com>
This commit is contained in:
Tim Lin 2023-05-31 18:39:02 +08:00 committed by Carles Cufí
parent 27e2ec8a95
commit 42e9dd8fe9
1 changed files with 30 additions and 0 deletions
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30
drivers/i2c/target/eeprom_target.c
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@ -167,6 +167,32 @@ static int eeprom_target_stop(struct i2c_target_config *config)
return 0;
}
#ifdef CONFIG_I2C_TARGET_BUFFER_MODE
static void eeprom_target_buf_write_received(struct i2c_target_config *config,
uint8_t *ptr, uint32_t len)
{
struct i2c_eeprom_target_data *data = CONTAINER_OF(config,
struct i2c_eeprom_target_data,
config);
/* The first byte is offset */
data->buffer_idx = *ptr;
memcpy(&data->buffer[data->buffer_idx], ptr + 1, len - 1);
}
static int eeprom_target_buf_read_requested(struct i2c_target_config *config,
uint8_t **ptr, uint32_t *len)
{
struct i2c_eeprom_target_data *data = CONTAINER_OF(config,
struct i2c_eeprom_target_data,
config);
*ptr = &data->buffer[data->buffer_idx];
*len = data->buffer_size;
return 0;
}
#endif
static int eeprom_target_register(const struct device *dev)
{
const struct i2c_eeprom_target_config *cfg = dev->config;
@ -193,6 +219,10 @@ static const struct i2c_target_callbacks eeprom_callbacks = {
.read_requested = eeprom_target_read_requested,
.write_received = eeprom_target_write_received,
.read_processed = eeprom_target_read_processed,
#ifdef CONFIG_I2C_TARGET_BUFFER_MODE
.buf_write_received = eeprom_target_buf_write_received,
.buf_read_requested = eeprom_target_buf_read_requested,
#endif
.stop = eeprom_target_stop,
};