Diff: targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_KL43Z/drivers/fsl_sai_dma.c

Revision:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/hal/TARGET_Freescale/TARGET_KSDK2_MCUS/TARGET_KL43Z/drivers/fsl_sai_dma.c	Fri Sep 02 15:07:44 2016 +0100
@@ -0,0 +1,431 @@
+/*
+ * Copyright (c) 2015, Freescale Semiconductor, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * o Redistributions of source code must retain the above copyright notice, this list
+ *   of conditions and the following disclaimer.
+ *
+ * o Redistributions in binary form must reproduce the above copyright notice, this
+ *   list of conditions and the following disclaimer in the documentation and/or
+ *   other materials provided with the distribution.
+ *
+ * o Neither the name of Freescale Semiconductor, Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from this
+ *   software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "fsl_sai_dma.h"
+
+/*******************************************************************************
+* Definitions
+******************************************************************************/
+/*<! Structure definition for sai_dma_private_handle_t. The structure is private. */
+typedef struct _sai_dma_private_handle
+{
+    I2S_Type *base;
+    sai_dma_handle_t *handle;
+} sai_dma_private_handle_t;
+
+enum _sai_dma_states
+{
+    kSAI_Idle = 0x0U,
+    kSAI_Busy = 0x1U,
+};
+
+/*<! Private handle only used for internally. */
+static sai_dma_private_handle_t s_dmaPrivateHandle[FSL_FEATURE_SOC_I2S_COUNT][2];
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+/*!
+ * @brief Get the instance number for SAI.
+ *
+ * @param base SAI base pointer.
+ */
+extern uint32_t SAI_GetInstance(I2S_Type *base);
+
+/*!
+ * @brief SAI EDMA callback for send.
+ *
+ * @param handle pointer to sai_dma_handle_t structure which stores the transfer state.
+ * @param userData Parameter for user callback.
+ */
+static void SAI_TxDMACallback(dma_handle_t *handle, void *userData);
+
+/*!
+ * @brief SAI EDMA callback for receive.
+ *
+ * @param handle pointer to sai_dma_handle_t structure which stores the transfer state.
+ * @param userData Parameter for user callback.
+ */
+static void SAI_RxDMACallback(dma_handle_t *handle, void *userData);
+
+/*******************************************************************************
+* Code
+******************************************************************************/
+static void SAI_TxDMACallback(dma_handle_t *handle, void *userData)
+{
+    sai_dma_private_handle_t *privHandle = (sai_dma_private_handle_t *)userData;
+    sai_dma_handle_t *saiHandle = privHandle->handle;
+
+    /* Update queue counter */
+    memset(&saiHandle->saiQueue[saiHandle->queueDriver], 0, sizeof(sai_transfer_t));
+    saiHandle->queueDriver = (saiHandle->queueDriver + 1) % SAI_XFER_QUEUE_SIZE;
+
+    /* Call callback function */
+    if (saiHandle->callback)
+    {
+        (saiHandle->callback)(privHandle->base, saiHandle, kStatus_SAI_TxIdle, saiHandle->userData);
+    }
+
+    /* If all data finished, just stop the transfer */
+    if (saiHandle->saiQueue[saiHandle->queueDriver].data == NULL)
+    {
+        SAI_TransferAbortSendDMA(privHandle->base, saiHandle);
+    }
+}
+
+static void SAI_RxDMACallback(dma_handle_t *handle, void *userData)
+{
+    sai_dma_private_handle_t *privHandle = (sai_dma_private_handle_t *)userData;
+    sai_dma_handle_t *saiHandle = privHandle->handle;
+
+    /* Update queue counter */
+    memset(&saiHandle->saiQueue[saiHandle->queueDriver], 0, sizeof(sai_transfer_t));
+    saiHandle->queueDriver = (saiHandle->queueDriver + 1) % SAI_XFER_QUEUE_SIZE;
+
+    /* Call callback function */
+    if (saiHandle->callback)
+    {
+        (saiHandle->callback)(privHandle->base, saiHandle, kStatus_SAI_RxIdle, saiHandle->userData);
+    }
+
+    /* If all data finished, just stop the transfer */
+    if (saiHandle->saiQueue[saiHandle->queueDriver].data == NULL)
+    {
+        SAI_TransferAbortReceiveDMA(privHandle->base, saiHandle);
+    }
+}
+
+void SAI_TransferTxCreateHandleDMA(
+    I2S_Type *base, sai_dma_handle_t *handle, sai_dma_callback_t callback, void *userData, dma_handle_t *dmaHandle)
+{
+    assert(handle && dmaHandle);
+
+    uint32_t instance = SAI_GetInstance(base);
+
+    /* Set sai base to handle */
+    handle->dmaHandle = dmaHandle;
+    handle->callback = callback;
+    handle->userData = userData;
+
+    /* Set SAI state to idle */
+    handle->state = kSAI_Idle;
+
+    s_dmaPrivateHandle[instance][0].base = base;
+    s_dmaPrivateHandle[instance][0].handle = handle;
+
+/* Use FIFO error continue nstead of using interrupt to handle error */
+#if defined(FSL_FEATURE_SAI_HAS_FIFO_FUNCTION_AFTER_ERROR) && (FSL_FEATURE_SAI_HAS_FIFO_FUNCTION_AFTER_ERROR)
+    base->TCR4 |= I2S_TCR4_FCONT_MASK;
+#endif
+
+    /* Install callback for Tx dma channel */
+    DMA_SetCallback(dmaHandle, SAI_TxDMACallback, &s_dmaPrivateHandle[instance][0]);
+}
+
+void SAI_TransferRxCreateHandleDMA(
+    I2S_Type *base, sai_dma_handle_t *handle, sai_dma_callback_t callback, void *userData, dma_handle_t *dmaHandle)
+{
+    assert(handle && dmaHandle);
+
+    uint32_t instance = SAI_GetInstance(base);
+
+    /* Set sai base to handle */
+    handle->dmaHandle = dmaHandle;
+    handle->callback = callback;
+    handle->userData = userData;
+
+    /* Set SAI state to idle */
+    handle->state = kSAI_Idle;
+
+    s_dmaPrivateHandle[instance][1].base = base;
+    s_dmaPrivateHandle[instance][1].handle = handle;
+
+/* Use FIFO error continue nstead of using interrupt to handle error */
+#if defined(FSL_FEATURE_SAI_HAS_FIFO_FUNCTION_AFTER_ERROR) && (FSL_FEATURE_SAI_HAS_FIFO_FUNCTION_AFTER_ERROR)
+    base->RCR4 |= I2S_RCR4_FCONT_MASK;
+#endif
+
+    /* Install callback for Tx dma channel */
+    DMA_SetCallback(dmaHandle, SAI_RxDMACallback, &s_dmaPrivateHandle[instance][1]);
+}
+
+void SAI_TransferTxSetFormatDMA(I2S_Type *base,
+                                sai_dma_handle_t *handle,
+                                sai_transfer_format_t *format,
+                                uint32_t mclkSourceClockHz,
+                                uint32_t bclkSourceClockHz)
+{
+    assert(handle && format);
+
+    dma_transfer_config_t config = {0};
+
+    /* Configure the audio format to SAI registers */
+    SAI_TxSetFormat(base, format, mclkSourceClockHz, bclkSourceClockHz);
+
+    /* Update the information in handle */
+    handle->channel = format->channel;
+
+    /* Configure the data format into DMA register */
+    config.destAddr = SAI_TxGetDataRegisterAddress(base, format->channel);
+    config.enableDestIncrement = false;
+    config.enableSrcIncrement = true;
+    switch (format->bitWidth)
+    {
+        case 8:
+            config.srcSize = kDMA_Transfersize8bits;
+            config.destSize = kDMA_Transfersize8bits;
+            handle->bytesPerFrame = 1U;
+            break;
+        case 16:
+            config.srcSize = kDMA_Transfersize16bits;
+            config.destSize = kDMA_Transfersize16bits;
+            handle->bytesPerFrame = 2U;
+            break;
+        default:
+            config.srcSize = kDMA_Transfersize32bits;
+            config.destSize = kDMA_Transfersize32bits;
+            handle->bytesPerFrame = 4U;
+            break;
+    }
+
+    /* Configure DMA channel */
+    DMA_SubmitTransfer(handle->dmaHandle, &config, true);
+}
+
+void SAI_TransferRxSetFormatDMA(I2S_Type *base,
+                                sai_dma_handle_t *handle,
+                                sai_transfer_format_t *format,
+                                uint32_t mclkSourceClockHz,
+                                uint32_t bclkSourceClockHz)
+{
+    assert(handle && format);
+
+    dma_transfer_config_t config = {0};
+
+    /* Configure the audio format to SAI registers */
+    SAI_RxSetFormat(base, format, mclkSourceClockHz, bclkSourceClockHz);
+    handle->channel = format->channel;
+
+    /* Configure the data format into DMA register */
+    config.srcAddr = SAI_RxGetDataRegisterAddress(base, format->channel);
+    config.enableDestIncrement = true;
+    config.enableSrcIncrement = false;
+    switch (format->bitWidth)
+    {
+        case 8:
+            config.srcSize = kDMA_Transfersize8bits;
+            config.destSize = kDMA_Transfersize8bits;
+            handle->bytesPerFrame = 1U;
+            break;
+        case 16:
+            config.srcSize = kDMA_Transfersize16bits;
+            config.destSize = kDMA_Transfersize16bits;
+            handle->bytesPerFrame = 2U;
+            break;
+        default:
+            config.srcSize = kDMA_Transfersize32bits;
+            config.destSize = kDMA_Transfersize32bits;
+            handle->bytesPerFrame = 4U;
+            break;
+    }
+
+    /* Configure DMA channel */
+    DMA_SubmitTransfer(handle->dmaHandle, &config, true);
+}
+
+status_t SAI_TransferSendDMA(I2S_Type *base, sai_dma_handle_t *handle, sai_transfer_t *xfer)
+{
+    assert(handle && xfer);
+
+    /* Check if input parameter invalid */
+    if ((xfer->data == NULL) || (xfer->dataSize == 0U))
+    {
+        return kStatus_InvalidArgument;
+    }
+
+    if (handle->saiQueue[handle->queueUser].data)
+    {
+        return kStatus_SAI_QueueFull;
+    }
+
+    handle->transferSize[handle->queueUser] = xfer->dataSize;
+    handle->saiQueue[handle->queueUser].data = xfer->data;
+    handle->saiQueue[handle->queueUser].dataSize = xfer->dataSize;
+    handle->queueUser = (handle->queueUser + 1) % SAI_XFER_QUEUE_SIZE;
+
+    /* Set the source address */
+    DMA_SetSourceAddress(handle->dmaHandle->base, handle->dmaHandle->channel, (uint32_t)(xfer->data));
+
+    /* Set the transfer size */
+    DMA_SetTransferSize(handle->dmaHandle->base, handle->dmaHandle->channel, xfer->dataSize);
+
+    /* Change the state of handle */
+    handle->state = kSAI_Busy;
+
+    /* Start DMA transfer */
+    DMA_StartTransfer(handle->dmaHandle);
+
+/* Enable DMA request and start SAI */
+#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
+    SAI_TxEnableDMA(base, kSAI_FIFORequestDMAEnable, true);
+#else
+    SAI_TxEnableDMA(base, kSAI_FIFOWarningDMAEnable, true);
+#endif
+    SAI_TxEnable(base, true);
+
+    return kStatus_Success;
+}
+
+status_t SAI_TransferReceiveDMA(I2S_Type *base, sai_dma_handle_t *handle, sai_transfer_t *xfer)
+{
+    assert(handle && xfer);
+
+    /* Check if input parameter invalid */
+    if ((xfer->data == NULL) || (xfer->dataSize == 0U))
+    {
+        return kStatus_InvalidArgument;
+    }
+
+    if (handle->saiQueue[handle->queueUser].data)
+    {
+        return kStatus_SAI_QueueFull;
+    }
+
+    /* Add into queue */
+    handle->transferSize[handle->queueUser] = xfer->dataSize;
+    handle->saiQueue[handle->queueUser].data = xfer->data;
+    handle->saiQueue[handle->queueUser].dataSize = xfer->dataSize;
+    handle->queueUser = (handle->queueUser + 1) % SAI_XFER_QUEUE_SIZE;
+
+    /* Set the source address */
+    DMA_SetDestinationAddress(handle->dmaHandle->base, handle->dmaHandle->channel, (uint32_t)(xfer->data));
+
+    /* Set the transfer size */
+    DMA_SetTransferSize(handle->dmaHandle->base, handle->dmaHandle->channel, xfer->dataSize);
+
+    /* Change the state of handle */
+    handle->state = kSAI_Busy;
+
+    /* Start DMA transfer */
+    DMA_StartTransfer(handle->dmaHandle);
+
+/* Enable DMA request and start SAI */
+#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
+    SAI_RxEnableDMA(base, kSAI_FIFORequestDMAEnable, true);
+#else
+    SAI_RxEnableDMA(base, kSAI_FIFOWarningDMAEnable, true);
+#endif
+    SAI_RxEnable(base, true);
+
+    return kStatus_Success;
+}
+
+void SAI_TransferAbortSendDMA(I2S_Type *base, sai_dma_handle_t *handle)
+{
+    assert(handle);
+
+    /* Disable dma */
+    DMA_AbortTransfer(handle->dmaHandle);
+
+/* Disable DMA enable bit */
+#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
+    SAI_TxEnableDMA(base, kSAI_FIFORequestDMAEnable, false);
+#else
+    SAI_TxEnableDMA(base, kSAI_FIFOWarningDMAEnable, false);
+#endif
+
+    /* Set the handle state */
+    handle->state = kSAI_Idle;
+
+    /* Clear the queue */
+    memset(handle->saiQueue, 0, sizeof(sai_transfer_t) * SAI_XFER_QUEUE_SIZE);
+    handle->queueDriver = 0;
+    handle->queueUser = 0;
+}
+
+void SAI_TransferAbortReceiveDMA(I2S_Type *base, sai_dma_handle_t *handle)
+{
+    assert(handle);
+
+    /* Disable dma */
+    DMA_AbortTransfer(handle->dmaHandle);
+
+/* Disable DMA enable bit */
+#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1)
+    SAI_RxEnableDMA(base, kSAI_FIFORequestDMAEnable, false);
+#else
+    SAI_RxEnableDMA(base, kSAI_FIFOWarningDMAEnable, false);
+#endif
+    /* Set the handle state */
+    handle->state = kSAI_Idle;
+
+    /* Clear the queue */
+    memset(handle->saiQueue, 0, sizeof(sai_transfer_t) * SAI_XFER_QUEUE_SIZE);
+    handle->queueDriver = 0;
+    handle->queueUser = 0;
+}
+
+status_t SAI_TransferGetSendCountDMA(I2S_Type *base, sai_dma_handle_t *handle, size_t *count)
+{
+    assert(handle);
+
+    status_t status = kStatus_Success;
+
+    if (handle->state != kSAI_Busy)
+    {
+        status = kStatus_NoTransferInProgress;
+    }
+    else
+    {
+        *count = handle->transferSize[handle->queueDriver] -
+                 DMA_GetRemainingBytes(handle->dmaHandle->base, handle->dmaHandle->channel);
+    }
+
+    return status;
+}
+
+status_t SAI_TransferGetReceiveCountDMA(I2S_Type *base, sai_dma_handle_t *handle, size_t *count)
+{
+    assert(handle);
+
+    status_t status = kStatus_Success;
+
+    if (handle->state != kSAI_Busy)
+    {
+        status = kStatus_NoTransferInProgress;
+    }
+    else
+    {
+        *count = handle->transferSize[handle->queueDriver] -
+                 DMA_GetRemainingBytes(handle->dmaHandle->base, handle->dmaHandle->channel);
+    }
+
+    return status;
+}