feat(hal): graudate the RMT hal driver into a new component

components/esp_hal_rmt/include/hal/rmt_hal.h

@@ -0,0 +1,62 @@
+/*
+ * SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/*******************************************************************************
+ * NOTICE
+ * The hal is not public api, don't use in application code.
+ * See readme.md in hal/include/hal/readme.md
+ ******************************************************************************/
+
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct rmt_dev_t *rmt_soc_handle_t; // RMT SOC layer handle
+
+/**
+ * @brief HAL context type of RMT driver
+ */
+typedef struct {
+    rmt_soc_handle_t regs; /*!< RMT Register base address */
+} rmt_hal_context_t;
+
+/**
+ * @brief Initialize the RMT HAL driver
+ *
+ * @param hal: RMT HAL context
+ */
+void rmt_hal_init(rmt_hal_context_t *hal);
+
+/**
+ * @brief Deinitialize the RMT HAL driver
+ *
+ * @param hal: RMT HAL context
+ */
+void rmt_hal_deinit(rmt_hal_context_t *hal);
+
+/**
+ * @brief Reset RMT TX Channel
+ *
+ * @param hal: RMT HAL context
+ * @param channel: RMT channel number
+ */
+void rmt_hal_tx_channel_reset(rmt_hal_context_t *hal, uint32_t channel);
+
+/**
+ * @brief Reset RMT TX Channel
+ *
+ * @param hal: RMT HAL context
+ * @param channel: RMT channel number
+ */
+void rmt_hal_rx_channel_reset(rmt_hal_context_t *hal, uint32_t channel);
+
+#ifdef __cplusplus
+}
+#endif

components/esp_hal_rmt/include/hal/rmt_periph.h

@@ -0,0 +1,55 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include "soc/soc_caps.h"
+#include "soc/periph_defs.h"
+#include "soc/regdma.h"
+#if SOC_HAS(RMT)
+#include "hal/rmt_ll.h"
+#endif
+
+#if SOC_RMT_SUPPORT_SLEEP_RETENTION
+#include "soc/retention_periph_defs.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if SOC_HAS(RMT)
+
+typedef struct {
+    const int irq;
+    struct {
+        struct {
+            const int tx_sig;
+            const int rx_sig;
+        };
+    } channels[RMT_LL_GET(CHANS_PER_INST)];
+} soc_rmt_signal_desc_t;
+
+extern const soc_rmt_signal_desc_t soc_rmt_signals[RMT_LL_GET(INST_NUM)];
+
+#if SOC_RMT_SUPPORT_SLEEP_RETENTION
+typedef struct {
+    periph_retention_module_t module;
+    const regdma_entries_config_t *regdma_entry_array;
+    uint32_t array_size;
+} rmt_reg_retention_info_t;
+
+// TODO: implement the retention link on the channel level, this can:
+// - save memory when not all RMT channels are used
+// - specify different retention dependency, e.g. only RMT channel x is capable to use DMA, we only want to add the DMA dependency for that channel
+extern const rmt_reg_retention_info_t rmt_reg_retention_info[RMT_LL_GET(INST_NUM)];
+#endif // SOC_RMT_SUPPORT_SLEEP_RETENTION
+
+#endif // SOC_HAS(RMT)
+
+#ifdef __cplusplus
+}
+#endif

components/esp_hal_rmt/include/hal/rmt_types.h

@@ -0,0 +1,42 @@
+/*
+ * SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#pragma once
+
+#include <stdint.h>
+#include "soc/clk_tree_defs.h"
+#include "soc/soc_caps.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief RMT group clock source
+ * @note User should select the clock source based on the power and resolution requirement
+ */
+#if SOC_HAS(RMT)
+typedef soc_periph_rmt_clk_src_t rmt_clock_source_t;
+#else
+typedef int rmt_clock_source_t;
+#endif
+
+/**
+ * @brief The layout of RMT symbol stored in memory, which is decided by the hardware design
+ */
+typedef union {
+    struct {
+        uint16_t duration0 : 15; /*!< Duration of level0 */
+        uint16_t level0 : 1;     /*!< Level of the first part */
+        uint16_t duration1 : 15; /*!< Duration of level1 */
+        uint16_t level1 : 1;     /*!< Level of the second part */
+    };
+    uint32_t val; /*!< Equivalent unsigned value for the RMT symbol */
+} rmt_symbol_word_t;
+
+#ifdef __cplusplus
+}
+#endif