ASoC: simple-card: add slot information parsing supports

For some CPU/CODEC DAI devices the slot information maybe needed. This
patch adds the slot information parsing for simple-card driver.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt
index 0527358..b30c222 100644 (file)
--- a/Documentation/devicetree/bindings/sound/simple-card.txt
+++ b/Documentation/devicetree/bindings/sound/simple-card.txt
@@ -18,6 +18,8 @@ Optional properties:
                                          Each entry is a pair of strings, the first being the
                                          connection's sink, the second being the connection's
                                          source.
+- dai-tdm-slot-num                     : Please refer to tdm-slot.txt.
+- dai-tdm-slot-width                   : Please refer to tdm-slot.txt.
 
 Required subnodes:
 
@@ -56,6 +58,9 @@ sound {
                "Headphone Jack", "HP_OUT",
                "External Speaker", "LINE_OUT";
 
+       dai-tdm-slot-num = <2>;
+       dai-tdm-slot-width = <8>;
+
        simple-audio-card,cpu {
                sound-dai = <&sh_fsi2 0>;
        };

diff --git a/include/sound/simple_card.h b/include/sound/simple_card.h
index e1ac996..9b0ac77 100644 (file)
--- a/include/sound/simple_card.h
+++ b/include/sound/simple_card.h
@@ -18,6 +18,8 @@ struct asoc_simple_dai {
        const char *name;
        unsigned int fmt;
        unsigned int sysclk;
+       int slots;
+       int slot_width;
 };
 
 struct asoc_simple_card_info {

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index 4fe8abc..bdd176d 100644 (file)
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -9,11 +9,14 @@
  * published by the Free Software Foundation.
  */
 #include <linux/clk.h>
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/string.h>
 #include <sound/simple_card.h>
+#include <sound/soc-dai.h>
+#include <sound/soc.h>
 
 struct simple_card_data {
        struct snd_soc_card snd_card;
@@ -44,6 +47,16 @@ static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
                }
        }
 
+       if (set->slots) {
+               ret = snd_soc_dai_set_tdm_slot(dai, 0, 0,
+                                               set->slots,
+                                               set->slot_width);
+               if (ret && ret != -ENOTSUPP) {
+                       dev_err(dai->dev, "simple-card: set_tdm_slot error\n");
+                       goto err;
+               }
+       }
+
        ret = 0;
 
 err:
@@ -94,6 +107,11 @@ asoc_simple_card_sub_parse_of(struct device_node *np,
        if (ret < 0)
                goto parse_error;
 
+       /* parse TDM slot */
+       ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
+       if (ret)
+               goto parse_error;
+
        /*
         * bitclock-inversion, frame-inversion
         * bitclock-master,    frame-master