gdma: dynamic alloc DMA channels

components/soc/esp32c3/include/soc/gdma_channel.h

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+// Copyright 2020 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+
+// The following macros have a format SOC_[periph][instance_id] to make it work with `GDMA_MAKE_TRIGGER`
+#define SOC_GDMA_TRIG_PERIPH_M2M0    (-1)
+#define SOC_GDMA_TRIG_PERIPH_SPI2    (0)
+#define SOC_GDMA_TRIG_PERIPH_UART0   (2)
+#define SOC_GDMA_TRIG_PERIPH_I2S0    (3)
+#define SOC_GDMA_TRIG_PERIPH_AES0    (6)
+#define SOC_GDMA_TRIG_PERIPH_SHA0    (7)
+#define SOC_GDMA_TRIG_PERIPH_ADC0    (8)