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51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "freertos/FreeRTOS.h"
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#include "hal/clk_gate_ll.h"
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#include "driver/periph_ctrl.h"
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static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
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static uint8_t ref_counts[PERIPH_MODULE_MAX] = {0};
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void periph_module_enable(periph_module_t periph)
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{
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assert(periph < PERIPH_MODULE_MAX);
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portENTER_CRITICAL_SAFE(&periph_spinlock);
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if (ref_counts[periph] == 0) {
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periph_ll_enable_clk_clear_rst(periph);
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}
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ref_counts[periph]++;
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portEXIT_CRITICAL_SAFE(&periph_spinlock);
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}
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void periph_module_disable(periph_module_t periph)
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{
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assert(periph < PERIPH_MODULE_MAX);
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portENTER_CRITICAL_SAFE(&periph_spinlock);
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ref_counts[periph]--;
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if (ref_counts[periph] == 0) {
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periph_ll_disable_clk_set_rst(periph);
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}
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portEXIT_CRITICAL_SAFE(&periph_spinlock);
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}
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void periph_module_reset(periph_module_t periph)
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{
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assert(periph < PERIPH_MODULE_MAX);
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portENTER_CRITICAL_SAFE(&periph_spinlock);
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periph_ll_reset(periph);
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portEXIT_CRITICAL_SAFE(&periph_spinlock);
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}
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