On 02/19/18 07:05, Kirill Marinushkin wrote:
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. The old behaviour is not broken, as by default the parameter value is 0.
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. bclk "master" # Platform is master of bit clock fsync "master" # platform is master of fsync pm_cont_clock "true" # clock is continuous, and can not 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 Cc: Liam Girdwood lgirdwood@gmail.com Cc: Mark Brown broonie@kernel.org Cc: Jaroslav Kysela perex@perex.cz Cc: Takashi Iwai tiwai@suse.com Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org
sound/soc/soc-topology.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index 01a50413c66f..21bd4f96348d 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -1981,6 +1981,12 @@ 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_cont)link->dai_fmt |= SND_SOC_DAIFMT_CONT;elselink->dai_fmt |= SND_SOC_DAIFMT_GATED;- /* clock signal polarity */ invert_bclk = hw_config->invert_bclk; invert_fsync = hw_config->invert_fsync;
This patch is outdated. Patch v2 is sent in a different thread to replace it.
Best Regards, Kirill