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feat(hw_support): add atomic code block for peripheral bus clock and reset

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This commit is contained in:
morris
2023-08-16 18:53:14 +08:00
parent 7f85830a3b
commit a9c813ca3e
2 changed files with 94 additions and 1 deletions
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36
components/esp_hw_support/periph_ctrl.c
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@@ -13,10 +13,46 @@
#include "esp_private/esp_modem_clock.h"
#endif
/// @brief For simplicity and backward compatible, we are using the same spin lock for both bus clock on/off and reset
/// @note We may want to split them into two spin locks in the future
static portMUX_TYPE periph_spinlock = portMUX_INITIALIZER_UNLOCKED;
static uint8_t ref_counts[PERIPH_MODULE_MAX] = {0};
void periph_rcc_enter(void)
{
portENTER_CRITICAL_SAFE(&periph_spinlock);
}
void periph_rcc_exit(void)
{
portEXIT_CRITICAL_SAFE(&periph_spinlock);
}
uint8_t periph_rcc_acquire_enter(periph_module_t periph)
{
periph_rcc_enter();
return ref_counts[periph];
}
void periph_rcc_acquire_exit(periph_module_t periph, uint8_t ref_count)
{
ref_counts[periph] = ++ref_count;
periph_rcc_exit();
}
uint8_t periph_rcc_release_enter(periph_module_t periph)
{
periph_rcc_enter();
return ref_counts[periph] - 1;
}
void periph_rcc_release_exit(periph_module_t periph, uint8_t ref_count)
{
ref_counts[periph] = ref_count;
periph_rcc_exit();
}
void periph_module_enable(periph_module_t periph)
{
assert(periph < PERIPH_MODULE_MAX);