ASoC: rsnd: add DeviceTree support

Support for loading the Renesas R-Car sound driver via DeviceTree.

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

1 files changed, 56 insertions, 0 deletions

diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 633b23d209b9..4b7e20603dd7 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -588,7 +588,61 @@ static void rsnd_ssi_parent_clk_setup(struct rsnd_priv *priv, struct rsnd_ssi *s
         }
 }
 
+
+static void rsnd_of_parse_ssi(struct platform_device *pdev,
+                              const struct rsnd_of_data *of_data,
+                              struct rsnd_priv *priv)
+{
+        struct device_node *node;
+        struct device_node *np;
+        struct rsnd_ssi_platform_info *ssi_info;
+        struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+        struct device *dev = &pdev->dev;
+        int nr, i;
+
+        if (!of_data)
+                return;
+
+        node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi");
+        if (!node)
+                return;
+
+        nr = of_get_child_count(node);
+        if (!nr)
+                return;
+
+        ssi_info = devm_kzalloc(dev,
+                                sizeof(struct rsnd_ssi_platform_info) * nr,
+                                GFP_KERNEL);
+        if (!ssi_info) {
+                dev_err(dev, "ssi info allocation error\n");
+                return;
+        }
+
+        info->ssi_info          = ssi_info;
+        info->ssi_info_nr       = nr;
+
+        i = -1;
+        for_each_child_of_node(node, np) {
+                i++;
+
+                ssi_info = info->ssi_info + i;
+
+                /*
+                 * pin settings
+                 */
+                if (of_get_property(np, "shared-pin", NULL))
+                        ssi_info->flags |= RSND_SSI_CLK_PIN_SHARE;
+
+                /*
+                 * irq
+                 */
+                ssi_info->pio_irq = irq_of_parse_and_map(np, 0);
+        }
+}
+
 int rsnd_ssi_probe(struct platform_device *pdev,
+                   const struct rsnd_of_data *of_data,
                    struct rsnd_priv *priv)
 {
         struct rcar_snd_info *info = rsnd_priv_to_info(priv);
@@ -600,6 +654,8 @@ int rsnd_ssi_probe(struct platform_device *pdev,
         char name[RSND_SSI_NAME_SIZE];
         int i, nr;
 
+        rsnd_of_parse_ssi(pdev, of_data, priv);
+
         /*
          *      init SSI
          */