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gpio: stellaris: implement gpio_pin_get_config

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Implement `gpio_pin_get_config` for the stellaris platform, and by
extension `qemu_cortex_m3`.

Signed-off-by: Jordan Yates <jordan.yates@data61.csiro.au>
This commit is contained in:
Jordan Yates 2023-07-15 18:07:12 +10:00 • committed by Fabio Baltieri
commit 86050556c0
1 changed files with 31 additions and 0 deletions
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31
drivers/gpio/gpio_stellaris.c
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@ -107,6 +107,34 @@ static int gpio_stellaris_configure(const struct device *dev,
return 0;
}
#ifdef CONFIG_GPIO_GET_CONFIG
static int gpio_stellaris_get_config(const struct device *dev,
gpio_pin_t pin,
gpio_flags_t *out_flags)
{
const struct gpio_stellaris_config *cfg = dev->config;
uint32_t base = cfg->base;
gpio_flags_t flags = 0;
mm_reg_t mask_addr;
if (sys_test_bit(GPIO_REG_ADDR(base, GPIO_DEN_OFFSET), pin) == 0) {
flags = GPIO_DISCONNECTED;
} else if (sys_test_bit(GPIO_REG_ADDR(base, GPIO_DIR_OFFSET), pin)) {
mask_addr = GPIO_RW_MASK_ADDR(base, GPIO_DATA_OFFSET, BIT(pin));
if (sys_test_bit(mask_addr, pin)) {
flags |= GPIO_OUTPUT_HIGH;
} else {
flags |= GPIO_OUTPUT_LOW;
}
} else {
flags = GPIO_INPUT;
}
*out_flags = flags;
return 0;
}
#endif
static int gpio_stellaris_port_get_raw(const struct device *dev,
uint32_t *value)
{
@ -221,6 +249,9 @@ static int gpio_stellaris_manage_callback(const struct device *dev,
static const struct gpio_driver_api gpio_stellaris_driver_api = {
.pin_configure = gpio_stellaris_configure,
#ifdef CONFIG_GPIO_GET_CONFIG
.pin_get_config = gpio_stellaris_get_config,
#endif
.port_get_raw = gpio_stellaris_port_get_raw,
.port_set_masked_raw = gpio_stellaris_port_set_masked_raw,
.port_set_bits_raw = gpio_stellaris_port_set_bits_raw,