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drivers: gpio: AXP192 GPIO driver

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AXP192 is a small power management IC, that also
features 5 GPIOS.
Besides GPIO driver this commit also includes needed modifications
in axp192 regulator and mfd driver as LDOIO0 functioanlity
is multiplexed with GPIO0 pin.

Signed-off-by: Martin Kiepfer <mrmarteng@teleschirm.org>
This commit is contained in:
Martin Kiepfer 2023-07-19 21:53:55 +02:00 • committed by Carles Cufí
commit 74db02bad1
11 changed files with 1055 additions and 6 deletions
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41
drivers/regulator/regulator_axp192.c
View file

@ -16,6 +16,7 @@
#include <zephyr/dt-bindings/regulator/axp192.h>
#include <zephyr/logging/log.h>
#include <zephyr/logging/log_instance.h>
#include <zephyr/drivers/mfd/axp192.h>
LOG_MODULE_REGISTER(regulator_axp192, CONFIG_REGULATOR_LOG_LEVEL);
@ -28,6 +29,8 @@ LOG_MODULE_REGISTER(regulator_axp192, CONFIG_REGULATOR_LOG_LEVEL);
#define AXP192_REG_DCDC3_VOLTAGE 0x27U
#define AXP192_REG_LDO23_VOLTAGE 0x28U
#define AXP192_REG_DCDC123_WORKMODE 0x80U
#define AXP192_REG_GPIO0_CONTROL 0x90U
#define AXP192_REG_LDOIO0_VOLTAGE 0x91U
struct regulator_axp192_desc {
const uint8_t enable_reg;
@ -114,6 +117,24 @@ static const struct regulator_axp192_desc dcdc3_desc = {
.num_ranges = ARRAY_SIZE(dcdc3_ranges),
};
static const struct linear_range ldoio0_ranges[] = {
LINEAR_RANGE_INIT(1800000u, 100000u, 0x00u, 0x0Fu),
};
static const struct regulator_axp192_desc ldoio0_desc = {
.enable_reg = AXP192_REG_GPIO0_CONTROL,
.enable_mask = 0x07u,
.enable_val = 0x03u,
.vsel_reg = AXP192_REG_LDOIO0_VOLTAGE,
.vsel_mask = 0xF0u,
.vsel_bitpos = 4u,
.max_ua = 50000u,
.workmode_reg = 0u,
.workmode_mask = 0u,
.ranges = ldoio0_ranges,
.num_ranges = ARRAY_SIZE(ldoio0_ranges),
};
static const struct linear_range ldo2_ranges[] = {
LINEAR_RANGE_INIT(1800000U, 100000U, 0x00U, 0x0FU),
};
@ -159,8 +180,14 @@ static int axp192_enable(const struct device *dev)
LOG_INST_DBG(config->log, "[0x%02x]=0x%02x mask=0x%02x", config->desc->enable_reg,
config->desc->enable_val, config->desc->enable_mask);
ret = i2c_reg_update_byte_dt(&config->i2c, config->desc->enable_reg,
config->desc->enable_mask, config->desc->enable_val);
/* special case for LDOIO0, which is multiplexed with GPIO0 */
if (config->desc->enable_reg == AXP192_REG_GPIO0_CONTROL) {
ret = mfd_axp192_gpio_func_ctrl(config->mfd, dev, 0, AXP192_GPIO_FUNC_LDO);
} else {
ret = i2c_reg_update_byte_dt(&config->i2c, config->desc->enable_reg,
config->desc->enable_mask, config->desc->enable_val);
}
if (ret != 0) {
LOG_INST_ERR(config->log, "Failed to enable regulator");
}
@ -177,8 +204,13 @@ static int axp192_disable(const struct device *dev)
LOG_INST_DBG(config->log, "[0x%02x]=0 mask=0x%x", config->desc->enable_reg,
config->desc->enable_mask);
ret = i2c_reg_update_byte_dt(&config->i2c, config->desc->enable_reg,
config->desc->enable_mask, 0u);
/* special case for LDOIO0, which is multiplexed with GPIO0 */
if (config->desc->enable_reg == AXP192_REG_GPIO0_CONTROL) {
ret = mfd_axp192_gpio_func_ctrl(config->mfd, dev, 0, AXP192_GPIO_FUNC_OUTPUT_LOW);
} else {
ret = i2c_reg_update_byte_dt(&config->i2c, config->desc->enable_reg,
config->desc->enable_mask, 0u);
}
if (ret != 0) {
LOG_INST_ERR(config->log, "Failed to disable regulator");
}
@ -354,6 +386,7 @@ static int regulator_axp192_init(const struct device *dev)
REGULATOR_AXP192_DEFINE_COND(inst, dcdc1) \
REGULATOR_AXP192_DEFINE_COND(inst, dcdc2) \
REGULATOR_AXP192_DEFINE_COND(inst, dcdc3) \
REGULATOR_AXP192_DEFINE_COND(inst, ldoio0) \
REGULATOR_AXP192_DEFINE_COND(inst, ldo2) \
REGULATOR_AXP192_DEFINE_COND(inst, ldo3)