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I2S: Enable Power Management locks

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Acquires PM_APB_FREQ_MAX lock when carrying any transaction on I2S if
Power Management Framework is enabled.

Signed-off-by: Sachin Parekh <sachin.parekh@espressif.com>
This commit is contained in:
Sachin Parekh 2019-02-22 17:47:42 +05:30
parent c56f147d48
commit 4cdf488de8
1 changed files with 36 additions and 3 deletions
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39
components/driver/i2s.c
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@ -36,8 +36,10 @@
#include "esp_intr.h"
#include "esp_err.h"
#include "esp_log.h"
#include "esp_pm.h"
static const char* I2S_TAG = "I2S";
#define I2S_CHECK(a, str, ret) if (!(a)) { \
ESP_LOGE(I2S_TAG,"%s:%d (%s):%s", __FILE__, __LINE__, __FUNCTION__, str); \
return (ret); \
@ -88,6 +90,9 @@ typedef struct {
bool use_apll; /*!< I2S use APLL clock */
bool tx_desc_auto_clear; /*!< I2S auto clear tx descriptor on underflow */
int fixed_mclk; /*!< I2S fixed MLCK clock */
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_handle_t pm_lock;
#endif
} i2s_obj_t;
static i2s_obj_t *p_i2s_obj[I2S_NUM_MAX] = {0};
@ -528,7 +533,6 @@ static void IRAM_ATTR i2s_intr_handler_default(void *arg)
}
xQueueSendFromISR(p_i2s->i2s_queue, (void * )&i2s_event, &high_priority_task_awoken);
}
}
if (i2s_reg->int_st.in_suc_eof && p_i2s->rx) {
@ -1060,6 +1064,14 @@ esp_err_t i2s_driver_install(i2s_port_t i2s_num, const i2s_config_t *i2s_config,
p_i2s_obj[i2s_num]->bytes_per_sample = 0; // Not initialized yet
p_i2s_obj[i2s_num]->channel_num = i2s_config->channel_format < I2S_CHANNEL_FMT_ONLY_RIGHT ? 2 : 1;
#ifdef CONFIG_PM_ENABLE
err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "i2s_driver",
&p_i2s_obj[i2s_num]->pm_lock);
if (err != ESP_OK) {
return err;
}
#endif //CONFIG_PM_ENABLE
//To make sure hardware is enabled before any hardware register operations.
if (i2s_num == I2S_NUM_1) {
periph_module_enable(PERIPH_I2S1_MODULE);
@ -1070,6 +1082,11 @@ esp_err_t i2s_driver_install(i2s_port_t i2s_num, const i2s_config_t *i2s_config,
//initial interrupt
err = i2s_isr_register(i2s_num, i2s_config->intr_alloc_flags, i2s_intr_handler_default, p_i2s_obj[i2s_num], &p_i2s_obj[i2s_num]->i2s_isr_handle);
if (err != ESP_OK) {
#ifdef CONFIG_PM_ENABLE
if (p_i2s_obj[i2s_num]->pm_lock) {
esp_pm_lock_delete(p_i2s_obj[i2s_num]->pm_lock);
}
#endif
free(p_i2s_obj[i2s_num]);
p_i2s_obj[i2s_num] = NULL;
ESP_LOGE(I2S_TAG, "Register I2S Interrupt error");
@ -1125,6 +1142,11 @@ esp_err_t i2s_driver_uninstall(i2s_port_t i2s_num)
if(p_i2s_obj[i2s_num]->use_apll) {
rtc_clk_apll_enable(0, 0, 0, 0, 0);
}
#ifdef CONFIG_PM_ENABLE
if (p_i2s_obj[i2s_num]->pm_lock) {
esp_pm_lock_delete(p_i2s_obj[i2s_num]->pm_lock);
}
#endif
free(p_i2s_obj[i2s_num]);
p_i2s_obj[i2s_num] = NULL;
@ -1158,6 +1180,9 @@ esp_err_t i2s_write(i2s_port_t i2s_num, const void *src, size_t size, size_t *by
I2S_CHECK((size < I2S_MAX_BUFFER_SIZE), "size is too large", ESP_ERR_INVALID_ARG);
I2S_CHECK((p_i2s_obj[i2s_num]->tx), "tx NULL", ESP_ERR_INVALID_ARG);
xSemaphoreTake(p_i2s_obj[i2s_num]->tx->mux, (portTickType)portMAX_DELAY);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_acquire(p_i2s_obj[i2s_num]->pm_lock);
#endif
src_byte = (char *)src;
while (size > 0) {
if (p_i2s_obj[i2s_num]->tx->rw_pos == p_i2s_obj[i2s_num]->tx->buf_size || p_i2s_obj[i2s_num]->tx->curr_ptr == NULL) {
@ -1179,6 +1204,10 @@ esp_err_t i2s_write(i2s_port_t i2s_num, const void *src, size_t size, size_t *by
p_i2s_obj[i2s_num]->tx->rw_pos += bytes_can_write;
(*bytes_written) += bytes_can_write;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_release(p_i2s_obj[i2s_num]->pm_lock);
#endif
xSemaphoreGive(p_i2s_obj[i2s_num]->tx->mux);
return ESP_OK;
}
@ -1289,6 +1318,9 @@ esp_err_t i2s_read(i2s_port_t i2s_num, void *dest, size_t size, size_t *bytes_re
I2S_CHECK((size < I2S_MAX_BUFFER_SIZE), "size is too large", ESP_ERR_INVALID_ARG);
I2S_CHECK((p_i2s_obj[i2s_num]->rx), "rx NULL", ESP_ERR_INVALID_ARG);
xSemaphoreTake(p_i2s_obj[i2s_num]->rx->mux, (portTickType)portMAX_DELAY);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_acquire(p_i2s_obj[i2s_num]->pm_lock);
#endif
while (size > 0) {
if (p_i2s_obj[i2s_num]->rx->rw_pos == p_i2s_obj[i2s_num]->rx->buf_size || p_i2s_obj[i2s_num]->rx->curr_ptr == NULL) {
if (xQueueReceive(p_i2s_obj[i2s_num]->rx->queue, &p_i2s_obj[i2s_num]->rx->curr_ptr, ticks_to_wait) == pdFALSE) {
@ -1308,6 +1340,9 @@ esp_err_t i2s_read(i2s_port_t i2s_num, void *dest, size_t size, size_t *bytes_re
p_i2s_obj[i2s_num]->rx->rw_pos += bytes_can_read;
(*bytes_read) += bytes_can_read;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_release(p_i2s_obj[i2s_num]->pm_lock);
#endif
xSemaphoreGive(p_i2s_obj[i2s_num]->rx->mux);
return ESP_OK;
}
@ -1337,5 +1372,3 @@ int i2s_pop_sample(i2s_port_t i2s_num, void *sample, TickType_t ticks_to_wait)
return bytes_pop;
}
}