fix(gpio): fix ESP32 GPIO sleep mode handling

The previous workaround does not work, the backup/restore should apply to RTC IO registers.

components/hal/esp32/gpio_hal_workaround.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -9,12 +9,13 @@
 #include "esp_attr.h"
 #include "soc/soc.h"
 #include "hal/gpio_hal.h"
+#include "hal/rtc_io_ll.h"
 #include "soc/soc_caps.h"
 
 #if CONFIG_GPIO_ESP32_SUPPORT_SWITCH_SLP_PULL
 typedef struct gpio_slp_mode_cfg {
-    volatile uint16_t fun_pu[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1];
+    volatile uint32_t fun_pu;
-    volatile uint16_t fun_pd[((SOC_GPIO_PIN_COUNT-1) >> 4) + 1];
+    volatile uint32_t fun_pd;
 } gpio_slp_mode_cfg_t;
 
 static void gpio_hal_sleep_mode_setup_wrapper(
@@ -37,35 +38,35 @@ static void gpio_hal_sleep_mode_setup_wrapper(
  */
 static void gpio_hal_fun_pupd_backup(gpio_hal_context_t *hal, uint32_t gpio_num, void *args)
 {
-    /* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status
+    /* On ESP32, setting SLP_PU, SLP_PD couldn't change GPIO status
      * from FUN_PU, FUN_PD to SLP_PU, SLP_PD at sleep.
      * On the ESP32S2, it does.
      * The following code emulates ESP32S2`s behavior:
      */
     gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args;
 
-    if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
+    int rtcio_num = rtc_io_num_map[gpio_num];
-        /* Record fun_pu and fun_pd state in bitmap */
+    if (rtcio_num >= 0 && gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
-        if (gpio_ll_pullup_is_enabled(hal->dev, gpio_num)) {
+        if (rtcio_ll_is_pullup_enabled(rtcio_num)) {
-            pcfg->fun_pu[gpio_num >> 4] |= BIT(gpio_num & 0xf);
+            pcfg->fun_pu |= BIT(rtcio_num);
         } else {
-            pcfg->fun_pu[gpio_num >> 4] &= ~BIT(gpio_num & 0xf);
+            pcfg->fun_pu &= ~BIT(rtcio_num);
         }
-        if (gpio_ll_pulldown_is_enabled(hal->dev, gpio_num)) {
+        if (rtcio_ll_is_pulldown_enabled(rtcio_num)) {
-            pcfg->fun_pd[gpio_num >> 4] |= BIT(gpio_num & 0xf);
+            pcfg->fun_pd |= BIT(rtcio_num);
         } else {
-            pcfg->fun_pd[gpio_num >> 4] &= ~BIT(gpio_num & 0xf);
+            pcfg->fun_pd &= ~BIT(rtcio_num);
         }
 
         if (gpio_ll_sleep_pullup_is_enabled(hal->dev, gpio_num)) {
-            gpio_ll_pullup_en(hal->dev, gpio_num);
+            rtcio_ll_pullup_enable(rtcio_num);
         } else {
-            gpio_ll_pullup_dis(hal->dev, gpio_num);
+            rtcio_ll_pullup_disable(rtcio_num);
         }
         if (gpio_ll_sleep_pulldown_is_enabled(hal->dev, gpio_num)) {
-            gpio_ll_pulldown_en(hal->dev, gpio_num);
+            rtcio_ll_pulldown_enable(rtcio_num);
         } else {
-            gpio_ll_pulldown_dis(hal->dev, gpio_num);
+            rtcio_ll_pulldown_disable(rtcio_num);
         }
     }
 }
@@ -78,23 +79,24 @@ static void gpio_hal_fun_pupd_backup(gpio_hal_context_t *hal, uint32_t gpio_num,
  */
 static void gpio_hal_fun_pupd_restore(gpio_hal_context_t *hal, uint32_t gpio_num, void *args)
 {
-    /* On ESP32, setting SLP_PU, SLP_PD couldn`t change GPIO status
+    /* On ESP32, setting SLP_PU, SLP_PD couldn't change GPIO status
      * from SLP_PU, SLP_PD to FUN_PU, FUN_PD when it wakes up.
      * On the ESP32S2, it does.
      * The following code emulates ESP32S2`s behavior:
      */
     gpio_slp_mode_cfg_t *pcfg = (gpio_slp_mode_cfg_t *)args;
 
-    if (gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
+    int rtcio_num = rtc_io_num_map[gpio_num];
-        if (pcfg->fun_pu[gpio_num >> 4] & BIT(gpio_num & 0xf)) {
+    if (rtcio_num >= 0 && gpio_ll_sleep_sel_is_enabled(hal->dev, gpio_num)) {
-            gpio_ll_pullup_en(hal->dev, gpio_num);
+        if (pcfg->fun_pu & BIT(rtcio_num)) {
+            rtcio_ll_pullup_enable(rtcio_num);
         } else {
-            gpio_ll_pullup_dis(hal->dev, gpio_num);
+            rtcio_ll_pullup_disable(rtcio_num);
         }
-        if (pcfg->fun_pd[gpio_num >> 4] & BIT(gpio_num & 0xf)) {
+        if (pcfg->fun_pd & BIT(rtcio_num)) {
-            gpio_ll_pulldown_en(hal->dev, gpio_num);
+            rtcio_ll_pulldown_enable(rtcio_num);
         } else {
-            gpio_ll_pulldown_dis(hal->dev, gpio_num);
+            rtcio_ll_pulldown_disable(rtcio_num);
         }
     }
 }

components/hal/esp32/include/hal/gpio_ll.h

@@ -173,7 +173,7 @@ static inline void gpio_ll_sleep_sel_dis(gpio_dev_t *hw, uint32_t gpio_num)
   */
 static inline bool gpio_ll_sleep_sel_is_enabled(gpio_dev_t *hw, uint32_t gpio_num)
 {
-    return REG_GET_BIT(GPIO_PIN_MUX_REG[gpio_num], SLP_SEL) ? true : false;
+    return REG_GET_BIT(DR_REG_IO_MUX_BASE + GPIO_PIN_MUX_REG_OFFSET[gpio_num], SLP_SEL) ? true : false;
 }
 
 /**
@@ -207,7 +207,7 @@ static inline void gpio_ll_sleep_pullup_en(gpio_dev_t *hw, uint32_t gpio_num)
   */
 static inline bool gpio_ll_sleep_pullup_is_enabled(gpio_dev_t *hw, uint32_t gpio_num)
 {
-    return REG_GET_BIT(GPIO_PIN_MUX_REG[gpio_num], SLP_PU) ? true : false;
+    return REG_GET_BIT(DR_REG_IO_MUX_BASE + GPIO_PIN_MUX_REG_OFFSET[gpio_num], SLP_PU) ? true : false;
 }
 
 /**
@@ -241,7 +241,7 @@ static inline void gpio_ll_sleep_pulldown_dis(gpio_dev_t *hw, uint32_t gpio_num)
   */
 static inline bool gpio_ll_sleep_pulldown_is_enabled(gpio_dev_t *hw, uint32_t gpio_num)
 {
-    return REG_GET_BIT(GPIO_PIN_MUX_REG[gpio_num], SLP_PD) ? true : false;
+    return REG_GET_BIT(DR_REG_IO_MUX_BASE + GPIO_PIN_MUX_REG_OFFSET[gpio_num], SLP_PD) ? true : false;
 }
 
 /**

components/hal/esp32/include/hal/rtc_io_ll.h

@@ -172,10 +172,11 @@ static inline void rtcio_ll_output_mode_set(int rtcio_num, rtcio_ll_out_mode_t m
 }
 
 /**
- * RTC GPIO pullup enable.
+ * @brief RTC GPIO pullup enable.
  *
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  */
+__attribute__((always_inline))
 static inline void rtcio_ll_pullup_enable(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pullup) {
@@ -184,10 +185,11 @@ static inline void rtcio_ll_pullup_enable(int rtcio_num)
 }
 
 /**
- * RTC GPIO pullup disable.
+ * @brief RTC GPIO pullup disable.
  *
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  */
+__attribute__((always_inline))
 static inline void rtcio_ll_pullup_disable(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pullup) {
@@ -201,6 +203,7 @@ static inline void rtcio_ll_pullup_disable(int rtcio_num)
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  * @return Whether the pullup of the pad is enabled or not.
  */
+__attribute__((always_inline))
 static inline bool rtcio_ll_is_pullup_enabled(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pullup) {
@@ -211,10 +214,11 @@ static inline bool rtcio_ll_is_pullup_enabled(int rtcio_num)
 }
 
 /**
- * RTC GPIO pulldown enable.
+ * @brief RTC GPIO pulldown enable.
  *
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  */
+__attribute__((always_inline))
 static inline void rtcio_ll_pulldown_enable(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pulldown) {
@@ -223,10 +227,11 @@ static inline void rtcio_ll_pulldown_enable(int rtcio_num)
 }
 
 /**
- * RTC GPIO pulldown disable.
+ * @brief RTC GPIO pulldown disable.
  *
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  */
+__attribute__((always_inline))
 static inline void rtcio_ll_pulldown_disable(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pulldown) {
@@ -240,6 +245,7 @@ static inline void rtcio_ll_pulldown_disable(int rtcio_num)
  * @param rtcio_num The index of rtcio. 0 ~ MAX(rtcio).
  * @return Whether the pulldown of the pad is enabled or not.
  */
+__attribute__((always_inline))
 static inline bool rtcio_ll_is_pulldown_enabled(int rtcio_num)
 {
     if (rtc_io_desc[rtcio_num].pulldown) {

components/soc/esp32/rtc_io_periph.c

@@ -7,7 +7,7 @@
 #include "soc/rtc_periph.h"
 #include "soc/rtc_io_reg.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     RTCIO_GPIO0_CHANNEL,    //GPIO0
     -1,//GPIO1
     RTCIO_GPIO2_CHANNEL,    //GPIO2

components/soc/esp32c6/rtc_io_periph.c

@@ -6,7 +6,7 @@
 
 #include "soc/rtc_io_periph.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     RTCIO_GPIO0_CHANNEL,    //GPIO0
     RTCIO_GPIO1_CHANNEL,    //GPIO1
     RTCIO_GPIO2_CHANNEL,    //GPIO2

components/soc/esp32h2/rtc_io_periph.c

@@ -5,7 +5,7 @@
  */
 #include "soc/rtc_io_periph.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     -1,//GPIO0
     -1,//GPIO1
     -1,//GPIO2

components/soc/esp32p4/rtc_io_periph.c

@@ -6,7 +6,7 @@
 
 #include "soc/rtc_periph.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     RTCIO_GPIO0_CHANNEL,    //GPIO0
     RTCIO_GPIO1_CHANNEL,    //GPIO1
     RTCIO_GPIO2_CHANNEL,    //GPIO2

components/soc/esp32s2/rtc_io_periph.c

@@ -7,7 +7,7 @@
 #include "soc/rtc_periph.h"
 #include "soc/rtc_io_reg.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     RTCIO_GPIO0_CHANNEL,    //GPIO0
     RTCIO_GPIO1_CHANNEL,    //GPIO1
     RTCIO_GPIO2_CHANNEL,    //GPIO2

components/soc/esp32s3/rtc_io_periph.c

@@ -7,7 +7,7 @@
 #include "soc/rtc_periph.h"
 #include "soc/rtc_io_reg.h"
 
-const int rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
+const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT] = {
     RTCIO_GPIO0_CHANNEL,    //GPIO0
     RTCIO_GPIO1_CHANNEL,    //GPIO1
     RTCIO_GPIO2_CHANNEL,    //GPIO2

components/soc/include/soc/rtc_io_periph.h

@@ -66,7 +66,7 @@ extern const rtc_io_desc_t rtc_io_desc[SOC_RTCIO_PIN_COUNT];
  * This is an internal function of the driver, and is not usually useful
  * for external use.
  */
-extern const int rtc_io_num_map[SOC_GPIO_PIN_COUNT];
+extern const int8_t rtc_io_num_map[SOC_GPIO_PIN_COUNT];
 #endif //SOC_RTCIO_PIN_COUNT > 0
 
 #ifdef __cplusplus