esp-idf/components/driver/periph_ctrl.c

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2021-05-23 20:09:38 -04:00
/*
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "freertos/FreeRTOS.h"
#include "hal/clk_gate_ll.h"
#include "esp_attr.h"
#include "esp_private/periph_ctrl.h"
static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
static uint8_t ref_counts[PERIPH_MODULE_MAX] = {0};
void periph_module_enable(periph_module_t periph)
{
assert(periph < PERIPH_MODULE_MAX);
portENTER_CRITICAL_SAFE(&periph_spinlock);
if (ref_counts[periph] == 0) {
periph_ll_enable_clk_clear_rst(periph);
}
ref_counts[periph]++;
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
void periph_module_disable(periph_module_t periph)
{
assert(periph < PERIPH_MODULE_MAX);
portENTER_CRITICAL_SAFE(&periph_spinlock);
ref_counts[periph]--;
if (ref_counts[periph] == 0) {
periph_ll_disable_clk_set_rst(periph);
}
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
void periph_module_reset(periph_module_t periph)
{
assert(periph < PERIPH_MODULE_MAX);
portENTER_CRITICAL_SAFE(&periph_spinlock);
periph_ll_reset(periph);
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
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#if CONFIG_ESP32_WIFI_ENABLED
IRAM_ATTR void wifi_bt_common_module_enable(void)
{
portENTER_CRITICAL_SAFE(&periph_spinlock);
if (ref_counts[PERIPH_WIFI_BT_COMMON_MODULE] == 0) {
periph_ll_wifi_bt_module_enable_clk_clear_rst();
}
ref_counts[PERIPH_WIFI_BT_COMMON_MODULE]++;
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
IRAM_ATTR void wifi_bt_common_module_disable(void)
{
portENTER_CRITICAL_SAFE(&periph_spinlock);
ref_counts[PERIPH_WIFI_BT_COMMON_MODULE]--;
if (ref_counts[PERIPH_WIFI_BT_COMMON_MODULE] == 0) {
periph_ll_wifi_bt_module_disable_clk_set_rst();
}
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
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void wifi_module_enable(void)
{
periph_ll_wifi_module_enable_clk_clear_rst();
}
void wifi_module_disable(void)
{
periph_ll_wifi_module_disable_clk_set_rst();
}
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#endif // CONFIG_ESP32_WIFI_ENABLED