The patch
ASoC: da7213: Add DAI DAPM event to control DAI clocks
has been applied to the asoc tree at
git://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 a0d5caeaebfd00853efa0080afc850e10be7b39a Mon Sep 17 00:00:00 2001
From: Adam Thomson Adam.Thomson.Opensource@diasemi.com Date: Tue, 10 May 2016 16:11:04 +0100 Subject: [PATCH] ASoC: da7213: Add DAI DAPM event to control DAI clocks
Currently, when Codec is I2S master DAI clocks are continuously generated even if all audio streams have stopped. To improve efficiency, control of the DAI clocks for master mode have been moved to a DAPM widget event so they're only enabled as required.
Signed-off-by: Adam Thomson Adam.Thomson.Opensource@diasemi.com Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/da7213.c | 35 ++++++++++++++++++++++++++++++++--- sound/soc/codecs/da7213.h | 2 -- 2 files changed, 32 insertions(+), 5 deletions(-)
diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index 7278f93460c1..701bd6204747 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -726,6 +726,36 @@ static const struct snd_kcontrol_new da7213_dapm_mixoutr_controls[] = {
/* + * DAPM Events + */ + +static int da7213_dai_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct da7213_priv *da7213 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + /* Enable DAI clks for master mode */ + if (da7213->master) + snd_soc_update_bits(codec, DA7213_DAI_CLK_MODE, + DA7213_DAI_CLK_EN_MASK, + DA7213_DAI_CLK_EN_MASK); + return 0; + case SND_SOC_DAPM_POST_PMD: + /* Disable DAI clks if in master mode */ + if (da7213->master) + snd_soc_update_bits(codec, DA7213_DAI_CLK_MODE, + DA7213_DAI_CLK_EN_MASK, 0); + return 0; + default: + return -EINVAL; + } +} + + +/* * DAPM widgets */
@@ -736,7 +766,8 @@ static const struct snd_soc_dapm_widget da7213_dapm_widgets[] = {
/* Use a supply here as this controls both input & output DAIs */ SND_SOC_DAPM_SUPPLY("DAI", DA7213_DAI_CTRL, DA7213_DAI_EN_SHIFT, - DA7213_NO_INVERT, NULL, 0), + DA7213_NO_INVERT, da7213_dai_event, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
/* * Input @@ -1143,11 +1174,9 @@ static int da7213_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) /* Set master/slave mode */ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: - dai_clk_mode |= DA7213_DAI_CLK_EN_MASTER_MODE; da7213->master = true; break; case SND_SOC_DAIFMT_CBS_CFS: - dai_clk_mode |= DA7213_DAI_CLK_EN_SLAVE_MODE; da7213->master = false; break; default: diff --git a/sound/soc/codecs/da7213.h b/sound/soc/codecs/da7213.h index 030fd691b076..5de5c2997e0c 100644 --- a/sound/soc/codecs/da7213.h +++ b/sound/soc/codecs/da7213.h @@ -178,8 +178,6 @@ #define DA7213_DAI_BCLKS_PER_WCLK_MASK (0x3 << 0) #define DA7213_DAI_CLK_POL_INV (0x1 << 2) #define DA7213_DAI_WCLK_POL_INV (0x1 << 3) -#define DA7213_DAI_CLK_EN_SLAVE_MODE (0x0 << 7) -#define DA7213_DAI_CLK_EN_MASTER_MODE (0x1 << 7) #define DA7213_DAI_CLK_EN_MASK (0x1 << 7)
/* DA7213_DAI_CTRL = 0x29 */