[alsa-devel] [PATCH v2 1/2] ASoC: topology: Add defines for snd_soc_tplg_hw_config.clock_gated

[Kirill Marinushkin]

In kernel `soc-dai.h`, DAI clock gating is defined as following:

~~~~
\#define SND_SOC_DAIFMT_CONT		(1 << 4) /* continuous clock */
\#define SND_SOC_DAIFMT_GATED		(0 << 4) /* clock is gated */
~~~~

The corresponding field of struct snd_soc_tplg_hw_config cannot be used as
bool values due to the inverted logic. Therefore this commit adds the
defines for this field.

snd_soc_tplg_hw_config.clock_gated = 0 => no effect
snd_soc_tplg_hw_config.clock_gated = 1 => SND_SOC_DAIFMT_GATED
snd_soc_tplg_hw_config.clock_gated = 2 => SND_SOC_DAIFMT_CONT

Signed-off-by: Kirill Marinushkin <k.marinushkin at gmail.com>
Cc: Takashi Sakamoto <o-takashi at sakamocchi.jp>
Cc: Jaroslav Kysela <perex at perex.cz>
Cc: Takashi Iwai <tiwai at suse.com>
Cc: alsa-devel at alsa-project.org
Cc: linux-kernel at vger.kernel.org
---
 include/uapi/sound/asoc.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h
index 69c37ecbff7e..86d0599a6f13 100644
--- a/include/uapi/sound/asoc.h
+++ b/include/uapi/sound/asoc.h
@@ -139,6 +139,11 @@
 #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_CHANNELS      (1 << 1)
 #define SND_SOC_TPLG_DAI_FLGBIT_SYMMETRIC_SAMPLEBITS    (1 << 2)
 
+/* DAI clock gating */
+#define SND_SOC_TPLG_DAI_CLK_GATE_UNDEFINED	0
+#define SND_SOC_TPLG_DAI_CLK_GATE_GATED	1
+#define SND_SOC_TPLG_DAI_CLK_GATE_CONT		2
+
 /* DAI physical PCM data formats.
  * Add new formats to the end of the list.
  */
@@ -312,7 +317,7 @@ struct snd_soc_tplg_hw_config {
 	__le32 size;            /* in bytes of this structure */
 	__le32 id;		/* unique ID - - used to match */
 	__le32 fmt;		/* SND_SOC_DAI_FORMAT_ format value */
-	__u8 clock_gated;	/* 1 if clock can be gated to save power */
+	__u8 clock_gated;	/* SND_SOC_TPLG_DAI_CLK_GATE_ value */
 	__u8 invert_bclk;	/* 1 for inverted BCLK, 0 for normal */
 	__u8 invert_fsync;	/* 1 for inverted frame clock, 0 for normal */
 	__u8 bclk_master;	/* 1 for master of BCLK, 0 for slave */
-- 
2.13.6