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commit d471609267172c8e6327739622d5bc52e502a8e0
Author: Eren Terzioglu <eren.terzio...@espressif.com>
AuthorDate: Wed Apr 9 12:23:03 2025 +0200
boards/xtensa: Add dedicated GPIO board level support for esp32[-s2|-s3]
Add board level dedicated GPIO support for Xtensa based Espressif devices
Signed-off-by: Eren Terzioglu <eren.terzio...@espressif.com>
---
.../esp32s2/esp32s2-saola-1/src/esp32s2_gpio.c | 45 ++++++++++++++++++++++
.../esp32s3/esp32s3-devkit/src/esp32s3_gpio.c | 45 ++++++++++++++++++++++
2 files changed, 90 insertions(+)
diff --git a/boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_gpio.c
b/boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_gpio.c
index 5278cd0cbf..a641931404 100644
--- a/boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_gpio.c
+++ b/boards/xtensa/esp32s2/esp32s2-saola-1/src/esp32s2_gpio.c
@@ -42,6 +42,10 @@
#include "esp32s2_gpio.h"
#include "hardware/esp32s2_gpio_sigmap.h"
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+#include "espressif/esp_dedic_gpio.h"
+#endif
+
#if defined(CONFIG_DEV_GPIO) && !defined(CONFIG_GPIO_LOWER_HALF)
/****************************************************************************
@@ -64,6 +68,14 @@
#define GPIO_IRQPIN 9
+/* Dedicated GPIO pins. GPIO4 and GPIO5 is used as an example, any other
+ * GPIOs could be used.
+ */
+
+#define GPIO_DEDIC1 6
+#define GPIO_DEDIC2 5
+#define GPIO_DEDIC_COUNT 2
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -161,6 +173,33 @@ static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
static struct esp32s2gpint_dev_s g_gpint[BOARD_NGPIOINT];
#endif
+/* This array maps the GPIO pins used as Dedicated GPIO */
+
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+static const int g_gpioidedic[GPIO_DEDIC_COUNT] =
+{
+ GPIO_DEDIC1, GPIO_DEDIC2
+};
+
+static struct esp_dedic_gpio_flags_s dedic_gpio_flags =
+{
+ .input_enable = 1,
+ .invert_input_enable = 0,
+ .output_enable = 1,
+ .invert_output_enable = 0
+};
+
+struct esp_dedic_gpio_config_s dedic_gpio_conf =
+{
+ .gpio_array = g_gpioidedic,
+ .array_size = GPIO_DEDIC_COUNT,
+ .flags = &dedic_gpio_flags,
+ .path = "/dev/dedic_gpio0"
+};
+
+struct file *dedicated_gpio = NULL;
+#endif
+
/****************************************************************************
* Private Functions
****************************************************************************/
@@ -465,6 +504,12 @@ int esp32s2_gpio_init(void)
}
#endif
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+ dedicated_gpio = esp_dedic_gpio_new_bundle(&dedic_gpio_conf);
+
+ pincount++;
+#endif
+
return OK;
}
#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */
diff --git a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_gpio.c
b/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_gpio.c
index a95f7f3e0f..702f381f77 100644
--- a/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_gpio.c
+++ b/boards/xtensa/esp32s3/esp32s3-devkit/src/esp32s3_gpio.c
@@ -40,6 +40,10 @@
#include "esp32s3_gpio.h"
#include "hardware/esp32s3_gpio_sigmap.h"
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+#include "espressif/esp_dedic_gpio.h"
+#endif
+
#if defined(CONFIG_DEV_GPIO) && !defined(CONFIG_GPIO_LOWER_HALF)
/****************************************************************************
@@ -68,6 +72,14 @@
#define GPIO_IRQPIN1 21
+/* Dedicated GPIO pins. GPIO4 and GPIO5 is used as an example, any other
+ * GPIOs could be used.
+ */
+
+#define GPIO_DEDIC1 4
+#define GPIO_DEDIC2 5
+#define GPIO_DEDIC_COUNT 2
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -165,6 +177,33 @@ static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
static struct esp32s3gpint_dev_s g_gpint[BOARD_NGPIOINT];
#endif
+/* This array maps the GPIO pins used as Dedicated GPIO */
+
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+static const int g_gpioidedic[GPIO_DEDIC_COUNT] =
+{
+ GPIO_DEDIC1, GPIO_DEDIC2
+};
+
+static struct esp_dedic_gpio_flags_s dedic_gpio_flags =
+{
+ .input_enable = 1,
+ .invert_input_enable = 0,
+ .output_enable = 1,
+ .invert_output_enable = 0
+};
+
+struct esp_dedic_gpio_config_s dedic_gpio_conf =
+{
+ .gpio_array = g_gpioidedic,
+ .array_size = GPIO_DEDIC_COUNT,
+ .flags = &dedic_gpio_flags,
+ .path = "/dev/dedic_gpio0"
+};
+
+struct file *dedicated_gpio = NULL;
+#endif
+
/****************************************************************************
* Private Functions
****************************************************************************/
@@ -385,6 +424,12 @@ int esp32s3_gpio_init(void)
}
#endif
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+ dedicated_gpio = esp_dedic_gpio_new_bundle(&dedic_gpio_conf);
+
+ pincount++;
+#endif
+
return OK;
}
#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */
