sdmmc: lock APB frequency while in transaction
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c2fff997ea
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330b6bd668
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@ -15,6 +15,7 @@
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#include <string.h>
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#include "esp_err.h"
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#include "esp_log.h"
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#include "esp_pm.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/queue.h"
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#include "freertos/semphr.h"
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@ -67,6 +68,9 @@ static sdmmc_desc_t s_dma_desc[SDMMC_DMA_DESC_CNT];
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static sdmmc_transfer_state_t s_cur_transfer = { 0 };
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static QueueHandle_t s_request_mutex;
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static bool s_is_app_cmd; // This flag is set if the next command is an APP command
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#ifdef CONFIG_PM_ENABLE
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static esp_pm_lock_handle_t s_pm_lock;
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#endif
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static esp_err_t handle_idle_state_events();
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static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd);
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@ -83,12 +87,24 @@ esp_err_t sdmmc_host_transaction_handler_init()
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return ESP_ERR_NO_MEM;
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}
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s_is_app_cmd = false;
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#ifdef CONFIG_PM_ENABLE
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esp_err_t err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "sdmmc", &s_pm_lock);
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if (err != ESP_OK) {
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vSemaphoreDelete(s_request_mutex);
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s_request_mutex = NULL;
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return err;
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}
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#endif
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return ESP_OK;
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}
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void sdmmc_host_transaction_handler_deinit()
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{
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assert(s_request_mutex);
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#ifdef CONFIG_PM_ENABLE
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esp_pm_lock_delete(s_pm_lock);
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s_pm_lock = NULL;
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#endif
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vSemaphoreDelete(s_request_mutex);
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s_request_mutex = NULL;
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}
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@ -96,6 +112,9 @@ void sdmmc_host_transaction_handler_deinit()
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esp_err_t sdmmc_host_do_transaction(int slot, sdmmc_command_t* cmdinfo)
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{
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xSemaphoreTake(s_request_mutex, portMAX_DELAY);
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#ifdef CONFIG_PM_ENABLE
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esp_pm_lock_acquire(s_pm_lock);
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#endif
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// dispose of any events which happened asynchronously
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handle_idle_state_events();
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// convert cmdinfo to hardware register value
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@ -141,6 +160,9 @@ esp_err_t sdmmc_host_do_transaction(int slot, sdmmc_command_t* cmdinfo)
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}
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}
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s_is_app_cmd = (ret == ESP_OK && cmdinfo->opcode == MMC_APP_CMD);
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#ifdef CONFIG_PM_ENABLE
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esp_pm_lock_release(s_pm_lock);
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#endif
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xSemaphoreGive(s_request_mutex);
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return ret;
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}
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