From 52a378272f91fed02a936edccdbeba15216c2ed5 Mon Sep 17 00:00:00 2001
From: Chen Chen <chenchen@espressif.com>
Date: Tue, 26 Aug 2025 17:02:37 +0800
Subject: [PATCH] fix(i2c/gpio): Add error checks to the i2c driver (Backport
 v5.5)

Add more checks to i2c driver, as well as fixed some GPIO issues
together with it.
---
 components/esp_driver_gpio/src/rtc_io.c | 15 ++++++++++++---
 components/esp_driver_i2c/i2c_common.c  |  4 ++--
 components/esp_driver_i2c/i2c_master.c  |  2 +-
 3 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/components/esp_driver_gpio/src/rtc_io.c b/components/esp_driver_gpio/src/rtc_io.c
index 7da59866bd..d605d72d98 100644
--- a/components/esp_driver_gpio/src/rtc_io.c
+++ b/components/esp_driver_gpio/src/rtc_io.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2019-2024 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2019-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -16,6 +16,9 @@
 #include "hal/rtc_io_hal.h"
 #include "soc/rtc_io_periph.h"
 #include "soc/soc_caps.h"
+#if SOC_LP_GPIO_MATRIX_SUPPORTED
+#include "soc/lp_gpio_pins.h"
+#endif
 
 static const char __attribute__((__unused__)) *RTCIO_TAG = "RTCIO";
 
@@ -181,8 +184,14 @@ esp_err_t rtc_gpio_iomux_func_sel(gpio_num_t gpio_num, int func)
 #if SOC_LP_GPIO_MATRIX_SUPPORTED
 esp_err_t lp_gpio_connect_in_signal(gpio_num_t gpio_num, uint32_t signal_idx, bool inv)
 {
-    ESP_RETURN_ON_FALSE(rtc_gpio_is_valid_gpio(gpio_num), ESP_ERR_INVALID_ARG, RTCIO_TAG, "LP_IO number error");
-    rtcio_hal_matrix_in(rtc_io_number_get(gpio_num), signal_idx, inv);
+    uint32_t io_num;
+    if (gpio_num == LP_GPIO_MATRIX_CONST_ZERO_INPUT || gpio_num == LP_GPIO_MATRIX_CONST_ONE_INPUT) {
+        io_num = gpio_num;
+    } else {
+        ESP_RETURN_ON_FALSE(rtc_gpio_is_valid_gpio(gpio_num), ESP_ERR_INVALID_ARG, RTCIO_TAG, "LP_IO number error");
+        io_num = rtc_io_number_get(gpio_num);
+    }
+    rtcio_hal_matrix_in(io_num, signal_idx, inv);
     return ESP_OK;
 }
 
diff --git a/components/esp_driver_i2c/i2c_common.c b/components/esp_driver_i2c/i2c_common.c
index ab418ccb16..dd53a4c0b2 100644
--- a/components/esp_driver_i2c/i2c_common.c
+++ b/components/esp_driver_i2c/i2c_common.c
@@ -431,8 +431,8 @@ esp_err_t i2c_common_deinit_pins(i2c_bus_handle_t handle)
         ESP_RETURN_ON_ERROR(rtc_gpio_deinit(handle->sda_num), TAG, "deinit rtc gpio failed");
         ESP_RETURN_ON_ERROR(rtc_gpio_deinit(handle->scl_num), TAG, "deinit rtc gpio failed");
 #if SOC_LP_GPIO_MATRIX_SUPPORTED
-        lp_gpio_connect_in_signal(LP_GPIO_MATRIX_CONST_ZERO_INPUT, i2c_periph_signal[port_id].scl_in_sig, 0);
-        lp_gpio_connect_in_signal(LP_GPIO_MATRIX_CONST_ZERO_INPUT, i2c_periph_signal[port_id].sda_in_sig, 0);
+        ESP_RETURN_ON_ERROR(lp_gpio_connect_in_signal(LP_GPIO_MATRIX_CONST_ZERO_INPUT, i2c_periph_signal[port_id].scl_in_sig, 0), TAG, "failed to connect lp gpio to zero");
+        ESP_RETURN_ON_ERROR(lp_gpio_connect_in_signal(LP_GPIO_MATRIX_CONST_ZERO_INPUT, i2c_periph_signal[port_id].sda_in_sig, 0), TAG, "failed to connect lp gpio to zero");
 #endif
     }
 #endif
diff --git a/components/esp_driver_i2c/i2c_master.c b/components/esp_driver_i2c/i2c_master.c
index 562e6788a3..fa454233f1 100644
--- a/components/esp_driver_i2c/i2c_master.c
+++ b/components/esp_driver_i2c/i2c_master.c
@@ -814,7 +814,7 @@ static esp_err_t i2c_master_bus_destroy(i2c_master_bus_handle_t bus_handle)
     i2c_master_bus_handle_t i2c_master = bus_handle;
     esp_err_t err = ESP_OK;
     if (i2c_master->base) {
-        i2c_common_deinit_pins(i2c_master->base);
+        ESP_RETURN_ON_ERROR(i2c_common_deinit_pins(i2c_master->base), TAG, "failed to deinit i2c pins");
         err = i2c_release_bus_handle(i2c_master->base);
     }
     if (err == ESP_OK) {