1 files changed, 70 insertions, 33 deletions

diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index 30b94d4f9c5d..de3b155a5011 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -364,6 +364,20 @@ static irqreturn_t davinci_mcasp_rx_irq_handler(int irq, void *data)
         return IRQ_RETVAL(handled_mask);
 }
 
+static irqreturn_t davinci_mcasp_common_irq_handler(int irq, void *data)
+{
+        struct davinci_mcasp *mcasp = (struct davinci_mcasp *)data;
+        irqreturn_t ret = IRQ_NONE;
+
+        if (mcasp->substreams[SNDRV_PCM_STREAM_PLAYBACK])
+                ret = davinci_mcasp_tx_irq_handler(irq, data);
+
+        if (mcasp->substreams[SNDRV_PCM_STREAM_CAPTURE])
+                ret |= davinci_mcasp_rx_irq_handler(irq, data);
+
+        return ret;
+}
+
 static int davinci_mcasp_set_dai_fmt(struct snd_soc_dai *cpu_dai,
                                          unsigned int fmt)
 {
@@ -1313,16 +1327,19 @@ static struct davinci_mcasp_pdata *davinci_mcasp_set_pdata_from_of(
 
         pdata->tx_dma_channel = dma_spec.args[0];
 
-        ret = of_property_match_string(np, "dma-names", "rx");
-        if (ret < 0)
-                goto nodata;
+        /* RX is not valid in DIT mode */
+        if (pdata->op_mode != DAVINCI_MCASP_DIT_MODE) {
+                ret = of_property_match_string(np, "dma-names", "rx");
+                if (ret < 0)
+                        goto nodata;
 
-        ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret,
-                                         &dma_spec);
-        if (ret < 0)
-                goto nodata;
+                ret = of_parse_phandle_with_args(np, "dmas", "#dma-cells", ret,
+                                                 &dma_spec);
+                if (ret < 0)
+                        goto nodata;
 
-        pdata->rx_dma_channel = dma_spec.args[0];
+                pdata->rx_dma_channel = dma_spec.args[0];
+        }
 
         ret = of_property_read_u32(np, "tx-num-evt", &val);
         if (ret >= 0)
@@ -1441,6 +1458,23 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
 
         mcasp->dev = &pdev->dev;
 
+        irq = platform_get_irq_byname(pdev, "common");
+        if (irq >= 0) {
+                irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_common\n",
+                                          dev_name(&pdev->dev));
+                ret = devm_request_threaded_irq(&pdev->dev, irq, NULL,
+                                                davinci_mcasp_common_irq_handler,
+                                                IRQF_ONESHOT | IRQF_SHARED,
+                                                irq_name, mcasp);
+                if (ret) {
+                        dev_err(&pdev->dev, "common IRQ request failed\n");
+                        goto err;
+                }
+
+                mcasp->irq_request[SNDRV_PCM_STREAM_PLAYBACK] = XUNDRN;
+                mcasp->irq_request[SNDRV_PCM_STREAM_CAPTURE] = ROVRN;
+        }
+
         irq = platform_get_irq_byname(pdev, "rx");
         if (irq >= 0) {
                 irq_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_rx\n",
@@ -1501,19 +1535,34 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
         else
                 dma_data->filter_data = &dma_params->channel;
 
-        dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE];
-        dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE];
-        dma_params->asp_chan_q = pdata->asp_chan_q;
-        dma_params->ram_chan_q = pdata->ram_chan_q;
-        dma_params->sram_pool = pdata->sram_pool;
-        dma_params->sram_size = pdata->sram_size_capture;
-        if (dat)
-                dma_params->dma_addr = dat->start;
-        else
-                dma_params->dma_addr = mem->start + pdata->rx_dma_offset;
-
-        /* Unconditional dmaengine stuff */
-        dma_data->addr = dma_params->dma_addr;
+        /* RX is not valid in DIT mode */
+        if (mcasp->op_mode != DAVINCI_MCASP_DIT_MODE) {
+                dma_params = &mcasp->dma_params[SNDRV_PCM_STREAM_CAPTURE];
+                dma_data = &mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE];
+                dma_params->asp_chan_q = pdata->asp_chan_q;
+                dma_params->ram_chan_q = pdata->ram_chan_q;
+                dma_params->sram_pool = pdata->sram_pool;
+                dma_params->sram_size = pdata->sram_size_capture;
+                if (dat)
+                        dma_params->dma_addr = dat->start;
+                else
+                        dma_params->dma_addr = mem->start + pdata->rx_dma_offset;
+
+                /* Unconditional dmaengine stuff */
+                dma_data->addr = dma_params->dma_addr;
+
+                res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+                if (res)
+                        dma_params->channel = res->start;
+                else
+                        dma_params->channel = pdata->rx_dma_channel;
+
+                /* dmaengine filter data for DT and non-DT boot */
+                if (pdev->dev.of_node)
+                        dma_data->filter_data = "rx";
+                else
+                        dma_data->filter_data = &dma_params->channel;
+        }
 
         if (mcasp->version < MCASP_VERSION_3) {
                 mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE;
@@ -1523,18 +1572,6 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
                 mcasp->fifo_base = DAVINCI_MCASP_V3_AFIFO_BASE;
         }
 
-        res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-        if (res)
-                dma_params->channel = res->start;
-        else
-                dma_params->channel = pdata->rx_dma_channel;
-
-        /* dmaengine filter data for DT and non-DT boot */
-        if (pdev->dev.of_node)
-                dma_data->filter_data = "rx";
-        else
-                dma_data->filter_data = &dma_params->channel;
-
         dev_set_drvdata(&pdev->dev, mcasp);
 
         mcasp_reparent_fck(pdev);