[alsa-devel] [PATCH] ASoC: sun4i-codec: fix first delay on Speaker

[Georgii Staroselskii]

This commit fixes the same issue as bf14da7 but for another codepath.
The issue can be triggered by having Speaker in codec audio routing.

&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 at emlid.com>
---
 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 15d08e3..e0099519 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 have the amplifier up. 700ms seems the best
+		 * compromise between the time to let the amplifier up and the
+		 * time not to feel this delay while playing a sound.
+		 */
+		msleep(700);
+	}
+
 	return 0;
 }
 
-- 
2.7.4