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feat(drivers): Support init high/low in 595 driver 

Add support for initializing a pin to a given high/low value during
configuration. Needed for proper initialization by systems like
GPIO hogs or gpio-leds Zephyr drivers.
This commit is contained in:
Peter Johanson 2024-11-15 10:36:19 -07:00 committed by Pete Johanson
parent 58de2eb5e9
commit 888c0d966c
1 changed files with 26 additions and 20 deletions
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46
app/module/drivers/gpio/gpio_595.c
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@ -89,26 +89,6 @@ static int setup_pin_dir(const struct device *dev, uint32_t pin, int flags) {
return 0;
}
static int reg_595_pin_config(const struct device *dev, gpio_pin_t pin, gpio_flags_t flags) {
int ret;
/* Can't do SPI bus operations from an ISR */
if (k_is_in_isr()) {
return -EWOULDBLOCK;
}
if ((flags & GPIO_OPEN_DRAIN) != 0U) {
return -ENOTSUP;
};
ret = setup_pin_dir(dev, pin, flags);
if (ret) {
LOG_ERR("595: error setting pin direction (%d)", ret);
}
return ret;
}
static int reg_595_port_get_raw(const struct device *dev, uint32_t *value) { return -ENOTSUP; }
static int reg_595_port_set_masked_raw(const struct device *dev, uint32_t mask, uint32_t value) {
@ -161,6 +141,32 @@ static int reg_595_port_toggle_bits(const struct device *dev, uint32_t mask) {
return ret;
}
static int reg_595_pin_config(const struct device *dev, gpio_pin_t pin, gpio_flags_t flags) {
int ret;
/* Can't do SPI bus operations from an ISR */
if (k_is_in_isr()) {
return -EWOULDBLOCK;
}
if ((flags & GPIO_OPEN_DRAIN) != 0U) {
return -ENOTSUP;
};
ret = setup_pin_dir(dev, pin, flags);
if (ret) {
LOG_ERR("595: error setting pin direction (%d)", ret);
}
if ((flags & GPIO_OUTPUT_INIT_LOW) != 0) {
return reg_595_port_clear_bits_raw(dev, BIT(pin));
} else if ((flags & GPIO_OUTPUT_INIT_HIGH) != 0) {
return reg_595_port_set_bits_raw(dev, BIT(pin));
}
return ret;
}
static const struct gpio_driver_api api_table = {
.pin_configure = reg_595_pin_config,
.port_get_raw = reg_595_port_get_raw,