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boards/risc-v/esp32c6: Add RTC GPIO board support for esp32c6

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Add RTC GPIO board support for esp32c6

Signed-off-by: Eren Terzioglu <eren.terzioglu@espressif.com>
This commit is contained in:
Eren Terzioglu 2025-08-08 19:29:24 +02:00 • committed by simbit18
parent e148048ac2
commit 092d7eac73
1 changed files with 91 additions and 0 deletions
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91
boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
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@ -47,6 +47,7 @@
#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
#include "espressif/esp_dedic_gpio.h"
#endif
#include "espressif/esp_rtc_gpio.h"
/* Board */
@ -86,6 +87,9 @@
#define GPIO_DEDIC2 5
#define GPIO_DEDIC_COUNT 2
#define GPIO_RTC1 0
#define GPIO_RTC_COUNT 1
/****************************************************************************
* Private Types
****************************************************************************/
@ -121,6 +125,8 @@ static int gpint_enable(struct gpio_dev_s *dev, bool enable);
static int gpint_setpintype(struct gpio_dev_s *dev,
enum gpio_pintype_e pintype);
#endif
static int gprtc_read(struct gpio_dev_s *dev, bool *value);
static int gprtc_write(struct gpio_dev_s *dev, bool value);
/****************************************************************************
* Private Data
@ -193,10 +199,80 @@ struct esp_dedic_gpio_config_s dedic_gpio_conf =
struct file *dedicated_gpio = NULL;
#endif
static const struct gpio_operations_s gprtc_ops =
{
.go_read = gprtc_read,
.go_write = gprtc_write,
.go_attach = NULL,
.go_enable = NULL,
.go_setpintype = NULL,
};
/* This array maps the GPIO pins used as OUTPUT */
static const uint32_t g_gpiortc[GPIO_RTC_COUNT] =
{
GPIO_RTC1
};
static struct espgpio_dev_s g_gprtc[GPIO_RTC_COUNT];
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: gprtc_read
*
* Description:
* Read a RTC digital output pin.
*
* Parameters:
* dev - A pointer to the gpio driver struct.
* value - A pointer to store the state of the pin.
*
* Returned Value:
* Zero (OK).
*
****************************************************************************/
static int gprtc_read(struct gpio_dev_s *dev, bool *value)
{
struct espgpio_dev_s *espgpio = (struct espgpio_dev_s *)dev;
DEBUGASSERT(espgpio != NULL && value != NULL);
gpioinfo("Reading...\n");
*value = esp_rtcio_read(g_gpiortc[espgpio->id]);
return OK;
}
/****************************************************************************
* Name: gprtc_write
*
* Description:
* Write to a RTC digital output pin.
*
* Parameters:
* dev - A pointer to the gpio driver struct.
* value - The value to be written.
*
* Returned Value:
* Zero (OK).
*
****************************************************************************/
static int gprtc_write(struct gpio_dev_s *dev, bool value)
{
struct espgpio_dev_s *espgpio = (struct espgpio_dev_s *)dev;
DEBUGASSERT(espgpio != NULL);
gpioinfo("Writing %d\n", (int)value);
esp_rtcio_write(g_gpiortc[espgpio->id], value);
return OK;
}
/****************************************************************************
* Name: gpout_read
*
@ -553,6 +629,21 @@ int esp_gpio_init(void)
pincount++;
#endif
for (i = 0; i < GPIO_RTC_COUNT; i++)
{
/* Setup and register the GPIO pin */
g_gprtc[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
g_gprtc[i].gpio.gp_ops = &gprtc_ops;
g_gprtc[i].id = i;
gpio_pin_register(&g_gprtc[i].gpio, pincount);
/* Configure the pins that will be used as input/output */
esp_rtcio_config_gpio(g_gpiortc[i], ESP_RTC_GPIO_MODE_INPUT_OUTPUT);
pincount++;
}
return OK;
}
#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */