The patch
ASoC: sun4i-codec: fix first delay on Speaker
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2
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.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 1f2675f6655838aaf910f911fd0abc821e3ff3df Mon Sep 17 00:00:00 2001
From: Georgii Staroselskii georgii.staroselskii@emlid.com Date: Tue, 28 May 2019 13:47:39 +0300 Subject: [PATCH] ASoC: sun4i-codec: fix first delay on Speaker
Allwinner DAC seems to have a delay in the Speaker audio routing. When playing a sound for the first time, the sound gets chopped. On a second play the sound is played correctly. After some time (~5s) the issue gets back.
This commit seems to be fixing the same issue as bf14da7 but for another codepath.
This is the DTS that was used to debug the problem.
&codec { allwinner,pa-gpios = <&r_pio 0 11 GPIO_ACTIVE_HIGH>; /* PL11 */ allwinner,audio-routing = "Speaker", "LINEOUT";
status = "okay"; }
Signed-off-by: Georgii Staroselskii georgii.staroselskii@emlid.com Reviewed-by: Chen-Yu Tsai wens@csie.org Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/sunxi/sun4i-codec.c | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c index 15d08e343b47..28d2f7713f8d 100644 --- a/sound/soc/sunxi/sun4i-codec.c +++ b/sound/soc/sunxi/sun4i-codec.c @@ -1329,6 +1329,15 @@ static int sun4i_codec_spk_event(struct snd_soc_dapm_widget *w, gpiod_set_value_cansleep(scodec->gpio_pa, !!SND_SOC_DAPM_EVENT_ON(event));
+ if (SND_SOC_DAPM_EVENT_ON(event)) { + /* + * Need a delay to wait for DAC to push the data. 700ms seems + * to be the best compromise not to feel this delay while + * playing a sound. + */ + msleep(700); + } + return 0; }