esp-idf/components/esp_hw_support/lp_periph_ctrl.c

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1.4 KiB
C
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/*
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "freertos/FreeRTOS.h"
#include "esp_private/lp_periph_ctrl.h"
#include "hal/lp_periph_clk_ctrl_ll.h"
static portMUX_TYPE lp_periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
static uint8_t ref_counts[LP_PERIPH_MODULE_MAX] = {0};
void lp_periph_module_enable(lp_periph_module_t lp_periph)
{
portENTER_CRITICAL(&lp_periph_spinlock);
if (ref_counts[lp_periph] == 0) {
// Enable clock and clear reset
lp_periph_ll_enable_clk_clear_rst(lp_periph);
}
ref_counts[lp_periph]++;
portEXIT_CRITICAL(&lp_periph_spinlock);
}
void lp_periph_module_disable(lp_periph_module_t lp_periph)
{
portENTER_CRITICAL(&lp_periph_spinlock);
ref_counts[lp_periph]--;
if (ref_counts[lp_periph] == 0) {
// Disable clock and set reset
lp_periph_ll_disable_clk_set_rst(lp_periph);
}
portEXIT_CRITICAL(&lp_periph_spinlock);
}
void lp_periph_module_reset(lp_periph_module_t lp_periph)
{
portENTER_CRITICAL(&lp_periph_spinlock);
lp_periph_ll_reset(lp_periph);
portEXIT_CRITICAL(&lp_periph_spinlock);
}
void lp_periph_set_clk_src(lp_periph_module_t lp_periph, soc_module_clk_t clk_src)
{
portENTER_CRITICAL(&lp_periph_spinlock);
lp_periph_ll_set_clk_src(lp_periph, clk_src);
portEXIT_CRITICAL(&lp_periph_spinlock);
}