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drivers: ad559x: fix mfd_ad559x_i2c_read_reg

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Reading a register requires 0x70 to be ORed with the register address.

Signed-off-by: Jeppe Odgaard <jeppe.odgaard@prevas.dk>
This commit is contained in:
Jeppe Odgaard 2024-08-13 09:22:37 +02:00 committed by Benjamin Cabé
parent b7badee6aa
commit 8933e6cefa
2 changed files with 6 additions and 1 deletions
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6
drivers/mfd/mfd_ad559x_i2c.c
View file

@ -12,6 +12,8 @@
#include "mfd_ad559x.h"
#define AD559X_REG_RD_POINTER 0x70
static int mfd_ad559x_i2c_read_raw(const struct device *dev, uint8_t *val, size_t len)
{
const struct mfd_ad559x_config *config = dev->config;
@ -35,7 +37,9 @@ static int mfd_ad559x_i2c_read_reg(const struct device *dev, uint8_t reg, uint8_
ARG_UNUSED(reg_data);
__ASSERT((reg & 0xf0) == 0, "reg bits [7:4] should be 0: 0x%x", reg);
if (reg >= AD559X_REG_SEQ_ADC || reg <= AD559X_REG_IO_TS_CONFIG) {
reg |= AD559X_REG_RD_POINTER;
}
ret = i2c_write_read_dt(&config->i2c, &reg, sizeof(reg), buf, sizeof(buf));
if (ret < 0) {

1
include/zephyr/drivers/mfd/ad559x.h
View file

@ -21,6 +21,7 @@ extern "C" {
#define AD559X_REG_GPIO_SET 0x09U
#define AD559X_REG_GPIO_INPUT_EN 0x0AU
#define AD559X_REG_PD_REF_CTRL 0x0BU
#define AD559X_REG_IO_TS_CONFIG 0x0DU
#define AD559X_EN_REF BIT(9)