From 6d12fdd6e705b8d4531849c77643e120327c0b2b Mon Sep 17 00:00:00 2001
From: Li Shuai <lishuai@espressif.com>
Date: Fri, 4 Dec 2020 11:33:15 +0800
Subject: [PATCH] light sleep: add gpio configure workaround at slept status
 for esp32c3

---
 components/driver/include/driver/gpio.h       |   9 +-
 components/hal/esp32c3/include/hal/gpio_ll.h  | 111 ++++++++++++++++++
 .../soc/esp32c3/include/soc/gpio_caps.h       |   3 +
 3 files changed, 116 insertions(+), 7 deletions(-)

diff --git a/components/driver/include/driver/gpio.h b/components/driver/include/driver/gpio.h
index d9fe4289f0..cac61ac99d 100644
--- a/components/driver/include/driver/gpio.h
+++ b/components/driver/include/driver/gpio.h
@@ -462,7 +462,6 @@ esp_err_t gpio_sleep_sel_en(gpio_num_t gpio_num);
   *
   * @return
   *     - ESP_OK Success
-  *
   */
 esp_err_t gpio_sleep_sel_dis(gpio_num_t gpio_num);
 
@@ -477,7 +476,6 @@ esp_err_t gpio_sleep_sel_dis(gpio_num_t gpio_num);
  * @return
  *     - ESP_OK Success
  *     - ESP_ERR_INVALID_ARG GPIO error
- *
  */
 esp_err_t gpio_sleep_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
 
@@ -492,7 +490,6 @@ esp_err_t gpio_sleep_set_direction(gpio_num_t gpio_num, gpio_mode_t mode);
  * @return
  *     - ESP_OK Success
  *     - ESP_ERR_INVALID_ARG : Parameter error
- *
  */
 esp_err_t gpio_sleep_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull);
 
@@ -504,8 +501,7 @@ esp_err_t gpio_sleep_set_pull_mode(gpio_num_t gpio_num, gpio_pull_mode_t pull);
   *
   * @return
   *      - ESP_OK Success
-  *
-  * */
+  */
 esp_err_t gpio_sleep_pupd_config_apply(gpio_num_t gpio_num);
 
 /**
@@ -515,8 +511,7 @@ esp_err_t gpio_sleep_pupd_config_apply(gpio_num_t gpio_num);
   *
   * @return
   *      - ESP_OK Success
-  *
-  * */
+  */
 esp_err_t gpio_sleep_pupd_config_unapply(gpio_num_t gpio_num);
 #endif
 #endif
diff --git a/components/hal/esp32c3/include/hal/gpio_ll.h b/components/hal/esp32c3/include/hal/gpio_ll.h
index 4fd25d7c27..7f37281358 100644
--- a/components/hal/esp32c3/include/hal/gpio_ll.h
+++ b/components/hal/esp32c3/include/hal/gpio_ll.h
@@ -399,6 +399,117 @@ static inline void gpio_ll_force_unhold_all(gpio_dev_t *hw)
     SET_PERI_REG_MASK(RTC_CNTL_DIG_ISO_REG, RTC_CNTL_CLR_DG_PAD_AUTOHOLD);
 }
 
+/**
+  * @brief Enable GPIO pin used for wakeup from sleep.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_sel_en(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_SEL_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Disable GPIO pin used for wakeup from sleep.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_sel_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_SEL_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Disable GPIO pull-up in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_pullup_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_PULLUP_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Enable GPIO pull-up in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_pullup_en(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_PULLUP_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Enable GPIO pull-down in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_pulldown_en(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_PULLDOWN_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Disable GPIO pull-down in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_pulldown_dis(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_PULLDOWN_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Disable GPIO input in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_input_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_INPUT_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Enable GPIO input in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_input_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_INPUT_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Disable GPIO output in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_output_disable(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_OUTPUT_DISABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+/**
+  * @brief Enable GPIO output in sleep mode.
+  *
+  * @param hw Peripheral GPIO hardware instance address.
+  * @param gpio_num GPIO number
+  */
+static inline void gpio_ll_sleep_output_enable(gpio_dev_t *hw, gpio_num_t gpio_num)
+{
+    PIN_SLP_OUTPUT_ENABLE(GPIO_PIN_MUX_REG[gpio_num]);
+}
+
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/soc/esp32c3/include/soc/gpio_caps.h b/components/soc/esp32c3/include/soc/gpio_caps.h
index ebbc15d885..9b6924ed64 100644
--- a/components/soc/esp32c3/include/soc/gpio_caps.h
+++ b/components/soc/esp32c3/include/soc/gpio_caps.h
@@ -36,6 +36,9 @@ extern "C" {
 #define SOC_GPIO_VALID_GPIO_MASK        ((1U<<SOC_GPIO_PIN_COUNT) - 1)
 #define SOC_GPIO_VALID_OUTPUT_GPIO_MASK SOC_GPIO_VALID_GPIO_MASK
 
+// Support to configure slept status
+#define SOC_GPIO_SUPPORT_SLP_SWITCH  (1)
+
 #ifdef __cplusplus
 }
 #endif