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drivers: led: lp3943: use i2c_dt_spec

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Simplify driver implementation by using i2c_dt_spec.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
This commit is contained in:
Gerard Marull-Paretas 2022-01-28 22:28:08 +01:00 • committed by Anas Nashif
commit a5b68f51ea
1 changed files with 31 additions and 29 deletions
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54
drivers/led/lp3943.c
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@ -51,8 +51,11 @@ enum lp3943_modes {
LP3943_DIM1,
};
struct lp3943_config {
struct i2c_dt_spec bus;
};
struct lp3943_data {
const struct device *i2c;
struct led_data dev_data;
};
@ -98,7 +101,8 @@ static int lp3943_get_led_reg(uint32_t *led, uint8_t *reg)
return 0;
}
static int lp3943_set_dim_states(struct lp3943_data *data, uint32_t led, uint8_t mode)
static int lp3943_set_dim_states(const struct lp3943_config *config,
uint32_t led, uint8_t mode)
{
int ret;
uint8_t reg;
@ -109,9 +113,7 @@ static int lp3943_set_dim_states(struct lp3943_data *data, uint32_t led, uint8_t
}
/* Set DIMx states for the LEDs */
if (i2c_reg_update_byte(data->i2c, DT_INST_REG_ADDR(0),
reg,
LP3943_MASK << (led << 1),
if (i2c_reg_update_byte_dt(&config->bus, reg, LP3943_MASK << (led << 1),
mode << (led << 1))) {
LOG_ERR("LED reg update failed");
return -EIO;
@ -123,6 +125,7 @@ static int lp3943_set_dim_states(struct lp3943_data *data, uint32_t led, uint8_t
static int lp3943_led_blink(const struct device *dev, uint32_t led,
uint32_t delay_on, uint32_t delay_off)
{
const struct lp3943_config *config = dev->config;
struct lp3943_data *data = dev->data;
struct led_data *dev_data = &data->dev_data;
int ret;
@ -149,13 +152,12 @@ static int lp3943_led_blink(const struct device *dev, uint32_t led,
}
val = (period * 255U) / dev_data->max_period;
if (i2c_reg_write_byte(data->i2c, DT_INST_REG_ADDR(0),
reg, val)) {
if (i2c_reg_write_byte_dt(&config->bus, reg, val)) {
LOG_ERR("LED write failed");
return -EIO;
}
ret = lp3943_set_dim_states(data, led, mode);
ret = lp3943_set_dim_states(config, led, mode);
if (ret) {
return ret;
}
@ -166,6 +168,7 @@ static int lp3943_led_blink(const struct device *dev, uint32_t led,
static int lp3943_led_set_brightness(const struct device *dev, uint32_t led,
uint8_t value)
{
const struct lp3943_config *config = dev->config;
struct lp3943_data *data = dev->data;
struct led_data *dev_data = &data->dev_data;
int ret;
@ -190,13 +193,12 @@ static int lp3943_led_set_brightness(const struct device *dev, uint32_t led,
}
val = (value * 255U) / dev_data->max_brightness;
if (i2c_reg_write_byte(data->i2c, DT_INST_REG_ADDR(0),
reg, val)) {
if (i2c_reg_write_byte_dt(&config->bus, reg, val)) {
LOG_ERR("LED write failed");
return -EIO;
}
ret = lp3943_set_dim_states(data, led, mode);
ret = lp3943_set_dim_states(config, led, mode);
if (ret) {
return ret;
}
@ -206,7 +208,7 @@ static int lp3943_led_set_brightness(const struct device *dev, uint32_t led,
static inline int lp3943_led_on(const struct device *dev, uint32_t led)
{
struct lp3943_data *data = dev->data;
const struct lp3943_config *config = dev->config;
int ret;
uint8_t reg, mode;
@ -217,9 +219,7 @@ static inline int lp3943_led_on(const struct device *dev, uint32_t led)
/* Set LED state to ON */
mode = LP3943_ON;
if (i2c_reg_update_byte(data->i2c, DT_INST_REG_ADDR(0),
reg,
LP3943_MASK << (led << 1),
if (i2c_reg_update_byte_dt(&config->bus, reg, LP3943_MASK << (led << 1),
mode << (led << 1))) {
LOG_ERR("LED reg update failed");
return -EIO;
@ -230,7 +230,7 @@ static inline int lp3943_led_on(const struct device *dev, uint32_t led)
static inline int lp3943_led_off(const struct device *dev, uint32_t led)
{
struct lp3943_data *data = dev->data;
const struct lp3943_config *config = dev->config;
int ret;
uint8_t reg;
@ -240,9 +240,8 @@ static inline int lp3943_led_off(const struct device *dev, uint32_t led)
}
/* Set LED state to OFF */
if (i2c_reg_update_byte(data->i2c, DT_INST_REG_ADDR(0),
reg,
LP3943_MASK << (led << 1), 0)) {
if (i2c_reg_update_byte_dt(&config->bus, reg, LP3943_MASK << (led << 1),
0)) {
LOG_ERR("LED reg update failed");
return -EIO;
}
@ -252,13 +251,13 @@ static inline int lp3943_led_off(const struct device *dev, uint32_t led)
static int lp3943_led_init(const struct device *dev)
{
const struct lp3943_config *config = dev->config;
struct lp3943_data *data = dev->data;
struct led_data *dev_data = &data->dev_data;
data->i2c = device_get_binding(DT_INST_BUS_LABEL(0));
if (data->i2c == NULL) {
LOG_DBG("Failed to get I2C device");
return -EINVAL;
if (!device_is_ready(config->bus.bus)) {
LOG_ERR("I2C device not ready");
return -ENODEV;
}
/* Hardware specific limits */
@ -272,6 +271,10 @@ static int lp3943_led_init(const struct device *dev)
static struct lp3943_data lp3943_led_data;
static const struct lp3943_config lp3943_led_config = {
.bus = I2C_DT_SPEC_INST_GET(0),
};
static const struct led_driver_api lp3943_led_api = {
.blink = lp3943_led_blink,
.set_brightness = lp3943_led_set_brightness,
@ -279,7 +282,6 @@ static const struct led_driver_api lp3943_led_api = {
.off = lp3943_led_off,
};
DEVICE_DT_INST_DEFINE(0, &lp3943_led_init, NULL,
&lp3943_led_data,
NULL, POST_KERNEL, CONFIG_LED_INIT_PRIORITY,
DEVICE_DT_INST_DEFINE(0, &lp3943_led_init, NULL, &lp3943_led_data,
&lp3943_led_config, POST_KERNEL, CONFIG_LED_INIT_PRIORITY,
&lp3943_led_api);