From 37c633defd5e4a9665b324c70ecdea30072fb803 Mon Sep 17 00:00:00 2001
From: laokaiyao <laokaiyao@espressif.com>
Date: Thu, 6 Nov 2025 11:34:32 +0800
Subject: [PATCH] fix(touch): make the gpio init symmetric

Closes https://github.com/espressif/esp-idf/issues/17806
---
 .../esp_driver_touch_sens/common/touch_sens_common.c     | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/components/esp_driver_touch_sens/common/touch_sens_common.c b/components/esp_driver_touch_sens/common/touch_sens_common.c
index 1b0d726f72d..e9feeb46d0d 100644
--- a/components/esp_driver_touch_sens/common/touch_sens_common.c
+++ b/components/esp_driver_touch_sens/common/touch_sens_common.c
@@ -49,6 +49,14 @@ static void touch_channel_pin_init(int id)
     gpio_config_as_analog(pin);
 }
 
+static void touch_channel_pin_deinit(int id)
+{
+    gpio_num_t pin = touch_sensor_channel_io_map[id];
+    assert(pin >= 0);
+    esp_gpio_revoke(BIT64(pin));
+    gpio_reset_pin(pin);
+}
+
 static void s_touch_free_resource(touch_sensor_handle_t sens_handle)
 {
     if (!sens_handle) {
@@ -211,6 +219,7 @@ esp_err_t touch_sensor_del_channel(touch_channel_handle_t chan_handle)
     TOUCH_ENTER_CRITICAL(TOUCH_PERIPH_LOCK);
     sens_handle->chan_mask &= ~(1UL << chan_handle->id);
     TOUCH_EXIT_CRITICAL(TOUCH_PERIPH_LOCK);
+    touch_channel_pin_deinit(chan_handle->id);
 
     free(g_touch->ch[ch_offset]);
     g_touch->ch[ch_offset] = NULL;