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.xi...@freescale.com>
Cc: Lars-Peter Clausen <l...@metafoo.de>
Cc: Mark Brown <broo...@linaro.org>
---
.../devicetree/bindings/sound/simple-card.txt | 5 +++++
include/sound/simple_card.h | 2 ++
sound/soc/generic/simple-card.c | 18 ++++++++++++++++++
3 files changed, 25 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt
b/Documentation/devicetree/bindings/sound/simple-card.txt
index 0527358..b30c222 100644
--- 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
--- 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
--- 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
--
1.8.4
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