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drivers: mfd: mfd_npm1300: Added timer configuration function

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Timer configuration function added

Signed-off-by: Andy Sinclair <andy.sinclair@nordicsemi.no>
This commit is contained in:
Andy Sinclair 2023-06-19 11:37:07 +01:00 committed by Carles Cufí
parent 81c584e3e7
commit c793764549
2 changed files with 43 additions and 2 deletions
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30
drivers/mfd/mfd_npm1300.c
View file

@ -9,8 +9,17 @@
#include <zephyr/drivers/i2c.h>
#include <zephyr/sys/util.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/drivers/mfd/npm1300.h>
#define TIME_BASE 0x07U
#define TIME_OFFSET_LOAD 0x03U
#define TIME_OFFSET_TIMER 0x08U
#define TIMER_PRESCALER_MS 16U
#define TIMER_MAX 0xFFFFFFU
struct mfd_npm1300_config {
struct i2c_dt_spec i2c;
};
@ -85,6 +94,27 @@ int mfd_npm1300_reg_update(const struct device *dev, uint8_t base, uint8_t offse
return ret;
}
int mfd_npm1300_set_timer(const struct device *dev, uint32_t time_ms)
{
const struct mfd_npm1300_config *config = dev->config;
uint8_t buff[5] = {TIME_BASE, TIME_OFFSET_TIMER};
uint32_t ticks = time_ms / TIMER_PRESCALER_MS;
if (ticks > TIMER_MAX) {
return -EINVAL;
}
sys_put_be24(ticks, &buff[2]);
int ret = i2c_write_dt(&config->i2c, buff, sizeof(buff));
if (ret != 0) {
return ret;
}
return mfd_npm1300_reg_write(dev, TIME_BASE, TIME_OFFSET_LOAD, 1U);
}
#define MFD_NPM1300_DEFINE(inst) \
static struct mfd_npm1300_data data_##inst; \
\

15
include/zephyr/drivers/mfd/npm1300.h
View file

@ -32,8 +32,8 @@ extern "C" {
* @retval 0 If successful
* @retval -errno In case of any bus error (see i2c_write_read_dt())
*/
int mfd_npm1300_reg_read_burst(const struct device *dev, uint8_t base, uint8_t offset,
void *data, size_t len);
int mfd_npm1300_reg_read_burst(const struct device *dev, uint8_t base, uint8_t offset, void *data,
size_t len);
/**
* @brief Read single register from npm1300
@ -87,6 +87,17 @@ int mfd_npm1300_reg_write2(const struct device *dev, uint8_t base, uint8_t offse
int mfd_npm1300_reg_update(const struct device *dev, uint8_t base, uint8_t offset, uint8_t data,
uint8_t mask);
/**
* @brief Write npm1300 timer register
*
* @param dev npm1300 mfd device
* @param time_ms timer value in ms
* @retval 0 If successful
* @retval -EINVAL if time value is too large
* @retval -errno In case of any bus error (see i2c_write_dt())
*/
int mfd_npm1300_set_timer(const struct device *dev, uint32_t time_ms);
/** @} */
#ifdef __cplusplus