The patch
ASoC: topology: Add missing clock gating parameter when parsing hw_configs
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
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Thanks, Mark
From 933e1c4a667103c4d10ebdc9505a0a6abd8c3fbd Mon Sep 17 00:00:00 2001
From: Kirill Marinushkin k.marinushkin@gmail.com Date: Wed, 4 Apr 2018 06:19:38 +0200 Subject: [PATCH] ASoC: topology: Add missing clock gating parameter when parsing hw_configs
Clock gating parameter is a part of `dai_fmt`. It is supported by `alsa-lib` when creating a topology binary file, but ignored by kernel when loading this topology file.
After applying this commit, the clock gating parameter is not ignored any more. This solution is backwards compatible. The existing behaviour is not broken, because by default the parameter value is 0 and is ignored.
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
For example, the following config, based on alsa-lib/src/conf/topology/broadwell/broadwell.conf, is now supported:
~~~~ SectionHWConfig."CodecHWConfig" { id "1" format "I2S" # physical audio format. pm_gate_clocks "true" # clock can be gated }
SectionLink."Codec" {
# used for binding to the physical link id "0"
hw_configs [ "CodecHWConfig" ]
default_hw_conf_id "1" } ~~~~
Signed-off-by: Kirill Marinushkin k.marinushkin@gmail.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Cc: Jaroslav Kysela perex@perex.cz Cc: Takashi Iwai tiwai@suse.de Cc: Mark Brown broonie@kernel.org Cc: Pan Xiuli xiuli.pan@linux.intel.com Cc: Liam Girdwood liam.r.girdwood@linux.intel.com Cc: linux-kernel@vger.kernel.org Cc: alsa-devel@alsa-project.org Signed-off-by: Mark Brown broonie@kernel.org --- include/uapi/sound/asoc.h | 7 ++++++- sound/soc/soc-topology.c | 7 +++++++ 2 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index f0e5e21efa54..f3c4b46e39d8 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. */ @@ -324,7 +329,7 @@ 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; /* SND_SOC_TPLG_BCLK_ value */ diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 1c55252641f3..aab31144f683 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -2006,6 +2006,13 @@ static void set_link_hw_format(struct snd_soc_dai_link *link,
link->dai_fmt = hw_config->fmt & SND_SOC_DAIFMT_FORMAT_MASK;
+ /* clock gating */ + if (hw_config->clock_gated == SND_SOC_TPLG_DAI_CLK_GATE_GATED) + link->dai_fmt |= SND_SOC_DAIFMT_GATED; + else if (hw_config->clock_gated == + SND_SOC_TPLG_DAI_CLK_GATE_CONT) + link->dai_fmt |= SND_SOC_DAIFMT_CONT; + /* clock signal polarity */ invert_bclk = hw_config->invert_bclk; invert_fsync = hw_config->invert_fsync;