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commit 21e580b9c43ac714a598c6b2e59eeb10dd9afc58
Author: Eren Terzioglu <eren.terzio...@espressif.com>
AuthorDate: Tue Apr 8 15:17:47 2025 +0200
boards/risc-v: Add dedicated GPIO board level support for esp32[-c3|-c6|-h2]
Add board level dedicated GPIO support for risc-v based Espressif devices
Signed-off-by: Eren Terzioglu <eren.terzio...@espressif.com>
---
.../esp32c3/esp32c3-generic/src/esp32c3_gpio.c | 44 ++++++++++++++++++++++
.../esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c | 44 ++++++++++++++++++++++
.../esp32h2/esp32h2-devkit/src/esp32h2_gpio.c | 44 ++++++++++++++++++++++
3 files changed, 132 insertions(+)
diff --git a/boards/risc-v/esp32c3/esp32c3-generic/src/esp32c3_gpio.c
b/boards/risc-v/esp32c3/esp32c3-generic/src/esp32c3_gpio.c
index c751699193..0d9417d37e 100644
--- a/boards/risc-v/esp32c3/esp32c3-generic/src/esp32c3_gpio.c
+++ b/boards/risc-v/esp32c3/esp32c3-generic/src/esp32c3_gpio.c
@@ -44,6 +44,9 @@
/* Arch */
#include "espressif/esp_gpio.h"
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+#include "espressif/esp_dedic_gpio.h"
+#endif
/* Board */
@@ -75,6 +78,14 @@
#define GPIO_IRQPIN 9
+/* Dedicated GPIO pins. GPIO4 and GPIO5 is used as an example, any other
+ * GPIOs could be used.
+ */
+
+#define GPIO_DEDIC1 4
+#define GPIO_DEDIC2 5
+#define GPIO_DEDIC_COUNT 2
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -155,6 +166,33 @@ static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
static struct espgpint_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
****************************************************************************/
@@ -509,6 +547,12 @@ int esp_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/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
index c88a2217b5..3d869c79ba 100644
--- a/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
+++ b/boards/risc-v/esp32c6/esp32c6-devkitc/src/esp32c6_gpio.c
@@ -44,6 +44,9 @@
/* Arch */
#include "espressif/esp_gpio.h"
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+#include "espressif/esp_dedic_gpio.h"
+#endif
/* Board */
@@ -75,6 +78,14 @@
#define GPIO_IRQPIN 9
+/* Dedicated GPIO pins. GPIO4 and GPIO5 is used as an example, any other
+ * GPIOs could be used.
+ */
+
+#define GPIO_DEDIC1 4
+#define GPIO_DEDIC2 5
+#define GPIO_DEDIC_COUNT 2
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -155,6 +166,33 @@ static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
static struct espgpint_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
****************************************************************************/
@@ -509,6 +547,12 @@ int esp_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/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_gpio.c
b/boards/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_gpio.c
index bd1ae75d01..95eaa5ef3f 100644
--- a/boards/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_gpio.c
+++ b/boards/risc-v/esp32h2/esp32h2-devkit/src/esp32h2_gpio.c
@@ -44,6 +44,9 @@
/* Arch */
#include "espressif/esp_gpio.h"
+#ifdef CONFIG_ESPRESSIF_DEDICATED_GPIO
+#include "espressif/esp_dedic_gpio.h"
+#endif
/* Board */
@@ -75,6 +78,14 @@
#define GPIO_IRQPIN 9
+/* Dedicated GPIO pins. GPIO4 and GPIO5 is used as an example, any other
+ * GPIOs could be used.
+ */
+
+#define GPIO_DEDIC1 4
+#define GPIO_DEDIC2 5
+#define GPIO_DEDIC_COUNT 2
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -155,6 +166,33 @@ static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
static struct espgpint_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
****************************************************************************/
@@ -509,6 +547,12 @@ int esp_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 */
