ASoC: fsl: refine the asrc driver for imx8qm

The clock source of ASRC in imx8qm is changed.

Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>

4 files changed, 89 insertions, 23 deletions

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 0e8bf263ed1a..9d85c2ee9fc3 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -54,23 +54,55 @@ static struct snd_pcm_hw_constraint_list fsl_asrc_rate_constraints = {
  */
 static unsigned char input_clk_map_imx35[] = {
 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 };
 
 static unsigned char output_clk_map_imx35[] = {
 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
 };
 
 /* i.MX53 uses the same map for input and output */
 static unsigned char input_clk_map_imx53[] = {
 /*	0x0  0x1  0x2  0x3  0x4  0x5  0x6  0x7  0x8  0x9  0xa  0xb  0xc  0xd  0xe  0xf */
 	0x0, 0x1, 0x2, 0x7, 0x4, 0x5, 0x6, 0x3, 0x8, 0x9, 0xa, 0xb, 0xc, 0xf, 0xe, 0xd,
+	0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7,
+	0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7,
 };
 
 static unsigned char output_clk_map_imx53[] = {
 /*	0x0  0x1  0x2  0x3  0x4  0x5  0x6  0x7  0x8  0x9  0xa  0xb  0xc  0xd  0xe  0xf */
 	0x8, 0x9, 0xa, 0x7, 0xc, 0x5, 0x6, 0xb, 0x0, 0x1, 0x2, 0x3, 0x4, 0xf, 0xe, 0xd,
+	0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7,
+	0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7, 0x7,
 };
 
+/* i.MX8 uses the same map for input and output */
+static unsigned char input_clk_map_imx8_0[] = {
+	0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0,
+	0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+	0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+};
+
+static unsigned char output_clk_map_imx8_0[] = {
+	0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0,
+	0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf,
+	0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+};
+
+static unsigned char input_clk_map_imx8_1[] = {
+	0xf, 0xf, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0,
+	0x0, 0x1, 0x2, 0x3, 0xb, 0xc, 0xf, 0xf, 0xd, 0xe, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+	0x4, 0x5, 0x6, 0xf, 0x8, 0x9, 0xa, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+};
+
+static unsigned char output_clk_map_imx8_1[] = {
+	0xf, 0xf, 0xf, 0xf, 0xf, 0x7, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0x0,
+	0x0, 0x1, 0x2, 0x3, 0xb, 0xc, 0xf, 0xf, 0xd, 0xe, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+	0x4, 0x5, 0x6, 0xf, 0x8, 0x9, 0xa, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf, 0xf,
+};
 static unsigned char *clk_map[2];
 
 /**
@@ -1037,10 +1069,18 @@ static int fsl_asrc_probe(struct platform_device *pdev)
 		asrc_priv->channel_bits = 3;
 		clk_map[IN] = input_clk_map_imx35;
 		clk_map[OUT] = output_clk_map_imx35;
-	} else {
+	} else if (of_device_is_compatible(np, "fsl,imx53-asrc")) {
 		asrc_priv->channel_bits = 4;
 		clk_map[IN] = input_clk_map_imx53;
 		clk_map[OUT] = output_clk_map_imx53;
+	} else if (of_device_is_compatible(np, "fsl,imx8qm-asrc0")) {
+		asrc_priv->channel_bits = 4;
+		clk_map[IN] = input_clk_map_imx8_0;
+		clk_map[OUT] = output_clk_map_imx8_0;
+	} else if (of_device_is_compatible(np, "fsl,imx8qm-asrc1")) {
+		asrc_priv->channel_bits = 4;
+		clk_map[IN] = input_clk_map_imx8_1;
+		clk_map[OUT] = output_clk_map_imx8_1;
 	}
 
 	ret = fsl_asrc_init(asrc_priv);
@@ -1204,6 +1244,8 @@ static const struct dev_pm_ops fsl_asrc_pm = {
 static const struct of_device_id fsl_asrc_ids[] = {
 	{ .compatible = "fsl,imx35-asrc", },
 	{ .compatible = "fsl,imx53-asrc", },
+	{ .compatible = "fsl,imx8qm-asrc0", },
+	{ .compatible = "fsl,imx8qm-asrc1", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, fsl_asrc_ids);
diff --git a/sound/soc/fsl/fsl_asrc.h b/sound/soc/fsl/fsl_asrc.h
index df332fc9afcb..f4d7faf20262 100644
--- a/sound/soc/fsl/fsl_asrc.h
+++ b/sound/soc/fsl/fsl_asrc.h
@@ -293,7 +293,6 @@
 
 
 struct dma_block {
-	dma_addr_t dma_paddr;
 	void *dma_vaddr;
 	unsigned int length;
 };
diff --git a/sound/soc/fsl/fsl_asrc_dma.c b/sound/soc/fsl/fsl_asrc_dma.c
index cdbba974c5e9..4c35a37a3110 100644
--- a/sound/soc/fsl/fsl_asrc_dma.c
+++ b/sound/soc/fsl/fsl_asrc_dma.c
@@ -211,25 +211,43 @@ static int fsl_asrc_dma_hw_params(struct snd_pcm_substream *substream,
 
 	/* Get DMA request of Back-End */
 	tmp_chan = dma_request_slave_channel(dev_be, tx ? "tx" : "rx");
-	tmp_data = tmp_chan->private;
-	pair->dma_data.dma_request = tmp_data->dma_request;
-	be_peripheral_type = tmp_data->peripheral_type;
-	dma_release_channel(tmp_chan);
+	if (tmp_chan) {
+		tmp_data = tmp_chan->private;
+		if (tmp_data) {
+			pair->dma_data.dma_request = tmp_data->dma_request;
+			be_peripheral_type = tmp_data->peripheral_type;
+			if (tx && be_peripheral_type == IMX_DMATYPE_SSI_DUAL)
+				pair->dma_data.dst_dualfifo = true;
+			if (!tx && be_peripheral_type == IMX_DMATYPE_SSI_DUAL)
+				pair->dma_data.src_dualfifo = true;
+		}
+		dma_release_channel(tmp_chan);
+	}
 
 	/* Get DMA request of Front-End */
 	tmp_chan = fsl_asrc_get_dma_channel(pair, dir);
-	tmp_data = tmp_chan->private;
-	pair->dma_data.dma_request2 = tmp_data->dma_request;
-	pair->dma_data.peripheral_type = tmp_data->peripheral_type;
-	pair->dma_data.priority = tmp_data->priority;
-	dma_release_channel(tmp_chan);
-
-	if (tx && be_peripheral_type == IMX_DMATYPE_SSI_DUAL)
-		pair->dma_data.dst_dualfifo = true;
-	if (!tx && be_peripheral_type == IMX_DMATYPE_SSI_DUAL)
-		pair->dma_data.src_dualfifo = true;
-
-	pair->dma_chan[dir] = dma_request_channel(mask, filter, &pair->dma_data);
+	if (tmp_chan) {
+		tmp_data = tmp_chan->private;
+		if (tmp_data) {
+			pair->dma_data.dma_request2 = tmp_data->dma_request;
+			pair->dma_data.peripheral_type =
+				 tmp_data->peripheral_type;
+			pair->dma_data.priority = tmp_data->priority;
+		}
+		dma_release_channel(tmp_chan);
+	}
+
+	/* For sdma DEV_TO_DEV, there is two dma request
+	 * But for emda DEV_TO_DEV, there is only one dma request, which is
+	 * from the BE.
+	 */
+	if (pair->dma_data.dma_request2 != pair->dma_data.dma_request)
+		pair->dma_chan[dir] =
+			dma_request_channel(mask, filter, &pair->dma_data);
+	else
+		pair->dma_chan[dir] =
+			dma_request_slave_channel(dev_be, tx ? "tx" : "rx");
+
 	if (!pair->dma_chan[dir]) {
 		dev_err(dev, "failed to request DMA channel for Back-End\n");
 		return -EINVAL;
diff --git a/sound/soc/fsl/fsl_asrc_m2m.c b/sound/soc/fsl/fsl_asrc_m2m.c
index 7363dc003aa6..f0b335697445 100644
--- a/sound/soc/fsl/fsl_asrc_m2m.c
+++ b/sound/soc/fsl/fsl_asrc_m2m.c
@@ -134,14 +134,12 @@ static int fsl_allocate_dma_buf(struct fsl_asrc_pair *pair)
 		pair_err("failed to allocate input DMA buffer\n");
 		return -ENOMEM;
 	}
-	input->dma_paddr = virt_to_dma(NULL, input->dma_vaddr);
 
 	output->dma_vaddr = kzalloc(output->length, GFP_KERNEL);
 	if (!output->dma_vaddr) {
 		pair_err("failed to allocate output DMA buffer\n");
 		goto exit;
 	}
-	output->dma_paddr = virt_to_dma(NULL, output->dma_vaddr);
 
 	return 0;
 
@@ -812,6 +810,7 @@ static int fsl_asrc_open(struct inode *inode, struct file *file)
 	struct fsl_asrc_pair *pair;
 	struct fsl_asrc_m2m *m2m;
 	int ret;
+	int i;
 
 	ret = signal_pending(current);
 	if (ret) {
@@ -839,7 +838,11 @@ static int fsl_asrc_open(struct inode *inode, struct file *file)
 
 	file->private_data = pair;
 
-	pm_runtime_get_sync(dev);
+	clk_prepare_enable(asrc_priv->mem_clk);
+	clk_prepare_enable(asrc_priv->ipg_clk);
+	clk_prepare_enable(asrc_priv->spba_clk);
+	for (i = 0; i < ASRC_CLK_MAX_NUM; i++)
+		clk_prepare_enable(asrc_priv->asrck_clk[i]);
 
 	return 0;
 out:
@@ -853,8 +856,8 @@ static int fsl_asrc_close(struct inode *inode, struct file *file)
 	struct fsl_asrc_pair *pair = file->private_data;
 	struct fsl_asrc_m2m *m2m = pair->private;
 	struct fsl_asrc *asrc_priv = pair->asrc_priv;
-	struct device *dev = &asrc_priv->pdev->dev;
 	unsigned long lock_flags;
+	int i;
 
 	if (m2m->asrc_active) {
 		m2m->asrc_active = 0;
@@ -890,7 +893,11 @@ static int fsl_asrc_close(struct inode *inode, struct file *file)
 	spin_unlock_irqrestore(&asrc_priv->lock, lock_flags);
 	file->private_data = NULL;
 
-	pm_runtime_put_sync(dev);
+	for (i = 0; i < ASRC_CLK_MAX_NUM; i++)
+		clk_disable_unprepare(asrc_priv->asrck_clk[i]);
+	clk_disable_unprepare(asrc_priv->spba_clk);
+	clk_disable_unprepare(asrc_priv->ipg_clk);
+	clk_disable_unprepare(asrc_priv->mem_clk);
 
 	return 0;
 }