arch/risc-v/espressif: Add touch sensor support for esp32[-p4]

Documentation/platforms/risc-v/esp32p4/index.rst

@@ -379,7 +379,7 @@ LP GPIO            No
 LP Timers          No
 LP ADC             Yes
 Temperature        Yes     Internal temperature sensor
-Touch Sensor       No
+Touch Sensor       Yes
 eFuse              Yes     Virtual eFuses supported
 ================= ======= ==================================
 

arch/risc-v/src/common/espressif/CMakeLists.txt

@@ -213,7 +213,7 @@ if(DEFINED ENV{ESP_HAL_3RDPARTY_VERSION})
       CACHE STRING "ESP HAL 3rdparty version")
 else()
   set(ESP_HAL_3RDPARTY_VERSION
-      627f38f94c1084b6b2d90ce09c0ce5517e8eaed7
+      9e9626fe059689a24e8d12f4b72d5ab2791de194
       CACHE STRING "ESP HAL 3rdparty version")
 endif()
 

arch/risc-v/src/common/espressif/Kconfig

@@ -1553,6 +1553,14 @@ config PM_UART_WAKEUP_CHAR_SEQ
 
 endmenu # PM UART Wakeup Sources
 
+config PM_TOUCH_WAKEUP
+	bool "PM Touch Wakeup"
+	depends on ESPRESSIF_TOUCH
+	default n
+	---help---
+		Enable touch sensor wakeup functionality.
+		This allows the system to wake up from PM_STANDBY or PM_SLEEP
+
 config PM_ALARM_SEC
 	int "PM_STANDBY delay (seconds)"
 	default 15
@@ -1685,6 +1693,13 @@ config ESPRESSIF_AES_ACCELERATOR
 	---help---
 		Enable AES accelerator support.
 
+config ESPRESSIF_TOUCH
+	bool "Touch sensor"
+	default n
+	depends on ARCH_CHIP_ESP32P4
+	---help---
+		Enable touch sensor support.
+
 config ESPRESSIF_ADC
 	bool "Analog-to-digital converter (ADC)"
 	default n
@@ -3795,6 +3810,136 @@ endif # PWM_MULTICHAN && PWM_NCHANNELS > 1
 
 endmenu # LEDC configuration
 
+menu "Touch Sensor Configuration"
+	depends on ESPRESSIF_TOUCH
+
+config ESP_TOUCH_CHANNEL1
+	bool "Touch Sensor Channel 1(IO2)"
+	default n
+	---help---
+		Enable touch sensor channel 1 (IO2).
+
+config ESP_TOUCH_CHANNEL2
+	bool "Touch Sensor Channel 2(IO3)"
+	default n
+	---help---
+		Enable touch sensor channel 2 (IO3).
+
+config ESP_TOUCH_CHANNEL3
+	bool "Touch Sensor Channel 3(IO4)"
+	default n
+	---help---
+		Enable touch sensor channel 3 (IO4).
+
+config ESP_TOUCH_CHANNEL4
+	bool "Touch Sensor Channel 4(IO5)"
+	default n
+	---help---
+		Enable touch sensor channel 4 (IO5).
+
+config ESP_TOUCH_CHANNEL5
+	bool "Touch Sensor Channel 5(IO6)"
+	default n
+	---help---
+		Enable touch sensor channel 5 (IO6).
+
+config ESP_TOUCH_CHANNEL6
+	bool "Touch Sensor Channel 6(IO7)"
+	default n
+	---help---
+		Enable touch sensor channel 6 (IO7).
+
+config ESP_TOUCH_CHANNEL7
+	bool "Touch Sensor Channel 7(IO8)"
+	default n
+	---help---
+		Enable touch sensor channel 7 (IO8).
+
+config ESP_TOUCH_CHANNEL8
+	bool "Touch Sensor Channel 8(IO9)"
+	default n
+	---help---
+		Enable touch sensor channel 8 (IO9).
+
+config ESP_TOUCH_CHANNEL9
+	bool "Touch Sensor Channel 9(IO10)"
+	default n
+	---help---
+		Enable touch sensor channel 9 (IO10).
+
+config ESP_TOUCH_CHANNEL10
+	bool "Touch Sensor Channel 10(IO11)"
+	default n
+	---help---
+		Enable touch sensor channel 10 (IO11).
+
+config ESP_TOUCH_CHANNEL11
+	bool "Touch Sensor Channel 11(IO12)"
+	default n
+	---help---
+		Enable touch sensor channel 11 (IO12).
+
+config ESP_TOUCH_CHANNEL12
+	bool "Touch Sensor Channel 12(IO13)"
+	default n
+	---help---
+		Enable touch sensor channel 12 (IO13).
+
+config ESP_TOUCH_CHANNEL13
+	bool "Touch Sensor Channel 13(IO14)"
+	default n
+	---help---
+		Enable touch sensor channel 13 (IO14).
+
+config ESP_TOUCH_CHANNEL14
+	bool "Touch Sensor Channel 14(IO15)"
+	default n
+	---help---
+		Enable touch sensor channel 14 (IO15).
+
+choice ESP_TOUCH_MODE
+	prompt "Touch Sensor Mode"
+	default ESP_TOUCH_MODE_CONTINUOUS
+	---help---
+		Select operating mode for touch sensor.
+
+config ESP_TOUCH_MODE_ONE_SHOT
+	bool "One-Shot Mode"
+
+config ESP_TOUCH_MODE_CONTINUOUS
+	bool "Continuous Mode"
+
+endchoice  # ESP_TOUCH_MODE
+
+config ESP_TOUCH_IRQ
+	bool "Enable touch pad interrupts"
+	depends on ARCH_IRQBUTTONS
+	default n
+	---help---
+		Enable interrupt support for the touch pads.
+
+config ESP_TOUCH_INVERTED
+	bool "Touch pad inverted threshold detection"
+	default n
+	---help---
+		Detect touch activity when read value is lower than threshold.
+
+config ESP_TOUCH_FILTER
+	bool "Touch pad filter"
+	default y
+	---help---
+		Enable internal filter for the touch pads.
+
+config ESP_TOUCH_DENOISE_LVL
+	int "Touch pad denoise level"
+	depends on ESP_TOUCH_FILTER
+	default 1
+	range 0 4
+	---help---
+		Internal denoise level for the touch pads.
+
+endmenu # Touch Sensor Configuration
+
 menu "I2S Configuration"
 	depends on ESPRESSIF_I2S
 

arch/risc-v/src/common/espressif/Make.defs

@@ -193,6 +193,10 @@ ifeq ($(CONFIG_CRYPTO_CRYPTODEV_HARDWARE),y)
 	CHIP_CSRCS += esp_crypto.c
 endif
 
+ifeq ($(CONFIG_ESPRESSIF_TOUCH),y)
+	CHIP_CSRCS += esp_touch.c
+endif
+
 ifeq ($(CONFIG_ESPRESSIF_USE_LP_CORE),y)
 	CHIP_CSRCS += esp_ulp.c
 endif
@@ -221,7 +225,7 @@ endif
 
 ESP_HAL_3RDPARTY_REPO   = esp-hal-3rdparty
 ifndef ESP_HAL_3RDPARTY_VERSION
-	ESP_HAL_3RDPARTY_VERSION = 627f38f94c1084b6b2d90ce09c0ce5517e8eaed7
+	ESP_HAL_3RDPARTY_VERSION = 9e9626fe059689a24e8d12f4b72d5ab2791de194
 endif
 
 ifndef ESP_HAL_3RDPARTY_URL