ASoC: rsnd: add DT support to DVC

Now, DVC can use DT

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

3 files changed, 57 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
index 41a120c2389d..aa697abf337e 100644
--- a/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
+++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.txt
@@ -13,6 +13,9 @@ Required properties:
 - rcar_sound,src                : Should contain SRC feature.
                                   The number of SRC subnode should be same as HW.
                                   see below for detail.
+- rcar_sound,dvc                : Should contain DVC feature.
+                                  The number of DVC subnode should be same as HW.
+                                  see below for detail.
 - rcar_sound,dai                : DAI contents.
                                   The number of DAI subnode should be same as HW.
                                   see below for detail.
@@ -40,6 +43,11 @@ rcar_sound: rcar_sound@0xffd90000 {
                 <0 0xec540000 0 0x1000>, /* SSIU */
                 <0 0xec541000 0 0x1280>; /* SSI */
 
+        rcar_sound,dvc {
+                dvc0: dvc@0 { };
+                dvc1: dvc@1 { };
+        };
+
         rcar_sound,src {
                 src0: src@0 { };
                 src1: src@1 { };
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 49d9b31b185c..907d4802fd5c 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -286,7 +286,13 @@ static void rsnd_dma_of_path(struct rsnd_dma *dma,
                         mod[i] = src;
                         src = NULL;
                 } else {
-                        mod[i] = dvc;
+                        if ((!is_play) && (this == src))
+                                this = dvc;
+
+                        mod[i] = (is_play) ? src : dvc;
+                        i++;
+                        mod[i] = (is_play) ? dvc : src;
+                        src = NULL;
                         dvc = NULL;
                 }
 
@@ -719,12 +725,13 @@ static void rsnd_of_parse_dai(struct platform_device *pdev,
         struct device_node *dai_node,   *dai_np;
         struct device_node *ssi_node,   *ssi_np;
         struct device_node *src_node,   *src_np;
+        struct device_node *dvc_node,   *dvc_np;
         struct device_node *playback, *capture;
         struct rsnd_dai_platform_info *dai_info;
         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
         struct device *dev = &pdev->dev;
         int nr, i;
-        int dai_i, ssi_i, src_i;
+        int dai_i, ssi_i, src_i, dvc_i;
 
         if (!of_data)
                 return;
@@ -750,6 +757,7 @@ static void rsnd_of_parse_dai(struct platform_device *pdev,
 
         ssi_node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
         src_node = of_get_child_by_name(dev->of_node, "rcar_sound,src");
+        dvc_node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
 
 #define mod_parse(name)                                                 \
 if (name##_node) {                                                      \
@@ -785,6 +793,7 @@ if (name##_node) {							\
 
                         mod_parse(ssi);
                         mod_parse(src);
+                        mod_parse(dvc);
 
                         if (playback)
                                 of_node_put(playback);
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c
index deef310c75dc..9096fb03d001 100644
--- a/sound/soc/sh/rcar/dvc.c
+++ b/sound/soc/sh/rcar/dvc.c
@@ -235,6 +235,42 @@ struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
         return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
 }
 
+static void rsnd_of_parse_dvc(struct platform_device *pdev,
+                              const struct rsnd_of_data *of_data,
+                              struct rsnd_priv *priv)
+{
+        struct device_node *node;
+        struct rsnd_dvc_platform_info *dvc_info;
+        struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+        struct device *dev = &pdev->dev;
+        int nr;
+
+        if (!of_data)
+                return;
+
+        node = of_get_child_by_name(dev->of_node, "rcar_sound,dvc");
+        if (!node)
+                return;
+
+        nr = of_get_child_count(node);
+        if (!nr)
+                goto rsnd_of_parse_dvc_end;
+
+        dvc_info = devm_kzalloc(dev,
+                                sizeof(struct rsnd_dvc_platform_info) * nr,
+                                GFP_KERNEL);
+        if (!dvc_info) {
+                dev_err(dev, "dvc info allocation error\n");
+                goto rsnd_of_parse_dvc_end;
+        }
+
+        info->dvc_info          = dvc_info;
+        info->dvc_info_nr       = nr;
+
+rsnd_of_parse_dvc_end:
+        of_node_put(node);
+}
+
 int rsnd_dvc_probe(struct platform_device *pdev,
                    const struct rsnd_of_data *of_data,
                    struct rsnd_priv *priv)
@@ -246,6 +282,8 @@ int rsnd_dvc_probe(struct platform_device *pdev,
         char name[RSND_DVC_NAME_SIZE];
         int i, nr;
 
+        rsnd_of_parse_dvc(pdev, of_data, priv);
+
         nr = info->dvc_info_nr;
         if (!nr)
                 return 0;