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sdmmc: lock APB frequency while in transaction

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This commit is contained in:
Ivan Grokhotkov 2017-09-24 14:37:37 +08:00
parent c2fff997ea
commit 330b6bd668
1 changed files with 22 additions and 0 deletions
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22
components/driver/sdmmc_transaction.c
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@ -15,6 +15,7 @@
#include <string.h>
#include "esp_err.h"
#include "esp_log.h"
#include "esp_pm.h"
#include "freertos/FreeRTOS.h"
#include "freertos/queue.h"
#include "freertos/semphr.h"
@ -67,6 +68,9 @@ static sdmmc_desc_t s_dma_desc[SDMMC_DMA_DESC_CNT];
static sdmmc_transfer_state_t s_cur_transfer = { 0 };
static QueueHandle_t s_request_mutex;
static bool s_is_app_cmd; // This flag is set if the next command is an APP command
#ifdef CONFIG_PM_ENABLE
static esp_pm_lock_handle_t s_pm_lock;
#endif
static esp_err_t handle_idle_state_events();
static sdmmc_hw_cmd_t make_hw_cmd(sdmmc_command_t* cmd);
@ -83,12 +87,24 @@ esp_err_t sdmmc_host_transaction_handler_init()
return ESP_ERR_NO_MEM;
}
s_is_app_cmd = false;
#ifdef CONFIG_PM_ENABLE
esp_err_t err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "sdmmc", &s_pm_lock);
if (err != ESP_OK) {
vSemaphoreDelete(s_request_mutex);
s_request_mutex = NULL;
return err;
}
#endif
return ESP_OK;
}
void sdmmc_host_transaction_handler_deinit()
{
assert(s_request_mutex);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_delete(s_pm_lock);
s_pm_lock = NULL;
#endif
vSemaphoreDelete(s_request_mutex);
s_request_mutex = NULL;
}
@ -96,6 +112,9 @@ void sdmmc_host_transaction_handler_deinit()
esp_err_t sdmmc_host_do_transaction(int slot, sdmmc_command_t* cmdinfo)
{
xSemaphoreTake(s_request_mutex, portMAX_DELAY);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_acquire(s_pm_lock);
#endif
// dispose of any events which happened asynchronously
handle_idle_state_events();
// convert cmdinfo to hardware register value
@ -141,6 +160,9 @@ esp_err_t sdmmc_host_do_transaction(int slot, sdmmc_command_t* cmdinfo)
}
}
s_is_app_cmd = (ret == ESP_OK && cmdinfo->opcode == MMC_APP_CMD);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_release(s_pm_lock);
#endif
xSemaphoreGive(s_request_mutex);
return ret;
}