3 files changed, 47 insertions, 7 deletions

diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
index 1eed972d4719..990fa71ce804 100644
--- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
+++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
@@ -5,6 +5,7 @@ Required properties:
         "ti,dm646x-mcasp-audio" : for DM646x platforms
         "ti,da830-mcasp-audio"  : for both DA830 & DA850 platforms
         "ti,am33xx-mcasp-audio" : for AM33xx platforms (AM33xx, AM43xx, TI81xx)
+        "ti,dra7-mcasp-audio"   : for DRA7xx platforms
 
 - reg : Should contain reg specifiers for the entries in the reg-names property.
 - reg-names : Should contain:
diff --git a/include/linux/platform_data/davinci_asp.h b/include/linux/platform_data/davinci_asp.h
index 689a856b86f9..5245992b0367 100644
--- a/include/linux/platform_data/davinci_asp.h
+++ b/include/linux/platform_data/davinci_asp.h
@@ -92,6 +92,7 @@ enum {
         MCASP_VERSION_1 = 0,    /* DM646x */
         MCASP_VERSION_2,        /* DA8xx/OMAPL1x */
         MCASP_VERSION_3,        /* TI81xx/AM33xx */
+        MCASP_VERSION_4,        /* DRA7xxx */
 };
 
 enum mcbsp_clk_input_pin {
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index 93f2e294d649..fc8c13d2f31e 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -31,12 +31,14 @@
 #include <sound/pcm_params.h>
 #include <sound/initval.h>
 #include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
 
 #include "davinci-pcm.h"
 #include "davinci-mcasp.h"
 
 struct davinci_mcasp {
         struct davinci_pcm_dma_params dma_params[2];
+        struct snd_dmaengine_dai_dma_data dma_data[2];
         void __iomem *base;
         u32 fifo_base;
         struct device *dev;
@@ -458,7 +460,9 @@ static int davinci_hw_common_param(struct davinci_mcasp *mcasp, int stream,
         u8 max_active_serializers = (channels + slots - 1) / slots;
         u32 reg;
         /* Default configuration */
-        mcasp_set_bits(mcasp->base + DAVINCI_MCASP_PWREMUMGT_REG, MCASP_SOFT);
+        if (mcasp->version != MCASP_VERSION_4)
+                mcasp_set_bits(mcasp->base + DAVINCI_MCASP_PWREMUMGT_REG,
+                               MCASP_SOFT);
 
         /* All PINS as McASP */
         mcasp_set_reg(mcasp->base + DAVINCI_MCASP_PFUNC_REG, 0x00000000);
@@ -605,6 +609,8 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
         struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(cpu_dai);
         struct davinci_pcm_dma_params *dma_params =
                                         &mcasp->dma_params[substream->stream];
+        struct snd_dmaengine_dai_dma_data *dma_data =
+                                        &mcasp->dma_data[substream->stream];
         int word_length;
         u8 fifo_level;
         u8 slots = mcasp->tdm_slots;
@@ -666,6 +672,8 @@ static int davinci_mcasp_hw_params(struct snd_pcm_substream *substream,
                 dma_params->acnt = dma_params->data_type;
 
         dma_params->fifo_level = fifo_level;
+        dma_data->maxburst = fifo_level;
+
         davinci_config_channel_size(mcasp, word_length);
 
         return 0;
@@ -711,7 +719,12 @@ static int davinci_mcasp_startup(struct snd_pcm_substream *substream,
 {
         struct davinci_mcasp *mcasp = snd_soc_dai_get_drvdata(dai);
 
-        snd_soc_dai_set_dma_data(dai, substream, mcasp->dma_params);
+        if (mcasp->version == MCASP_VERSION_4)
+                snd_soc_dai_set_dma_data(dai, substream,
+                                        &mcasp->dma_data[substream->stream]);
+        else
+                snd_soc_dai_set_dma_data(dai, substream, mcasp->dma_params);
+
         return 0;
 }
 
@@ -794,6 +807,13 @@ static struct snd_platform_data omap2_mcasp_pdata = {
         .version = MCASP_VERSION_3,
 };
 
+static struct snd_platform_data dra7_mcasp_pdata = {
+        .tx_dma_offset = 0x200,
+        .rx_dma_offset = 0x284,
+        .asp_chan_q = EVENTQ_0,
+        .version = MCASP_VERSION_4,
+};
+
 static const struct of_device_id mcasp_dt_ids[] = {
         {
                 .compatible = "ti,dm646x-mcasp-audio",
@@ -807,6 +827,10 @@ static const struct of_device_id mcasp_dt_ids[] = {
                 .compatible = "ti,am33xx-mcasp-audio",
                 .data = &omap2_mcasp_pdata,
         },
+        {
+                .compatible = "ti,dra7-mcasp-audio",
+                .data = &dra7_mcasp_pdata,
+        },
         { /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mcasp_dt_ids);
@@ -999,6 +1023,9 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
         else
                 dma_data->dma_addr = mem->start + pdata->tx_dma_offset;
 
+        /* Unconditional dmaengine stuff */
+        mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].addr = dma_data->dma_addr;
+
         res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
         if (res)
                 dma_data->channel = res->start;
@@ -1015,6 +1042,9 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
         else
                 dma_data->dma_addr = mem->start + pdata->rx_dma_offset;
 
+        /* Unconditional dmaengine stuff */
+        mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE].addr = dma_data->dma_addr;
+
         if (mcasp->version < MCASP_VERSION_3) {
                 mcasp->fifo_base = DAVINCI_MCASP_V2_AFIFO_BASE;
                 /* dma_data->dma_addr is pointing to the data port address */
@@ -1029,6 +1059,10 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
         else
                 dma_data->channel = pdata->rx_dma_channel;
 
+        /* Unconditional dmaengine stuff */
+        mcasp->dma_data[SNDRV_PCM_STREAM_PLAYBACK].filter_data = "tx";
+        mcasp->dma_data[SNDRV_PCM_STREAM_CAPTURE].filter_data = "rx";
+
         dev_set_drvdata(&pdev->dev, mcasp);
         ret = snd_soc_register_component(&pdev->dev, &davinci_mcasp_component,
                                          &davinci_mcasp_dai[pdata->op_mode], 1);
@@ -1036,10 +1070,12 @@ static int davinci_mcasp_probe(struct platform_device *pdev)
         if (ret != 0)
                 goto err_release_clk;
 
-        ret = davinci_soc_platform_register(&pdev->dev);
-        if (ret) {
-                dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
-                goto err_unregister_component;
+        if (mcasp->version != MCASP_VERSION_4) {
+                ret = davinci_soc_platform_register(&pdev->dev);
+                if (ret) {
+                        dev_err(&pdev->dev, "register PCM failed: %d\n", ret);
+                        goto err_unregister_component;
+                }
         }
 
         return 0;
@@ -1054,9 +1090,11 @@ err_release_clk:
 
 static int davinci_mcasp_remove(struct platform_device *pdev)
 {
+        struct davinci_mcasp *mcasp = dev_get_drvdata(&pdev->dev);
 
         snd_soc_unregister_component(&pdev->dev);
-        davinci_soc_platform_unregister(&pdev->dev);
+        if (mcasp->version != MCASP_VERSION_4)
+                davinci_soc_platform_unregister(&pdev->dev);
 
         pm_runtime_put_sync(&pdev->dev);
         pm_runtime_disable(&pdev->dev);