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* [PATCH] ASoC: da7219: software reset codec at probe
@ 2016-09-14 14:06 Xing Zheng
  2016-09-14 17:15   ` Mark Brown
  0 siblings, 1 reply; 4+ messages in thread
From: Xing Zheng @ 2016-09-14 14:06 UTC (permalink / raw)
  To: linux-rockchip, Adam.Thomson.Opensource
  Cc: cychiang, heiko, smbarber, hychao, dianders, Hsin-Yu Chao,
	Xing Zheng, Support Opensource, Liam Girdwood, Mark Brown,
	Jaroslav Kysela, Takashi Iwai, alsa-devel, linux-kernel

From: Hsin-Yu Chao <hychao@chromium.org>

On some platform da7219 codec has persistent power across reboot
so it doesn't reset and cause abnormal jack detection.
Workaround this issue by doing software reset at probe.

Signed-off-by: Hsin-Yu Chao <hychao@chromium.org>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
---

 sound/soc/codecs/da7219.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c
index 737e914..9d08c11 100644
--- a/sound/soc/codecs/da7219.c
+++ b/sound/soc/codecs/da7219.c
@@ -1941,6 +1941,14 @@ static int da7219_i2c_probe(struct i2c_client *i2c,
 		return ret;
 	}
 
+	/* Software reset codec. */
+	regmap_write_bits(da7219->regmap, DA7219_ACCDET_CONFIG_1,
+			  DA7219_ACCDET_EN_MASK, 0);
+	regmap_write_bits(da7219->regmap, DA7219_CIF_CTRL,
+			  DA7219_CIF_REG_SOFT_RESET_MASK, 0);
+	regmap_write_bits(da7219->regmap, DA7219_SYSTEM_ACTIVE,
+			  DA7219_SYSTEM_ACTIVE_MASK, 0);
+
 	ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_da7219,
 				     &da7219_dai, 1);
 	if (ret < 0) {
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2016-09-14 17:16 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-09-14 14:06 [PATCH] ASoC: da7219: software reset codec at probe Xing Zheng
2016-09-14 17:15 ` Applied "ASoC: da7219: software reset codec at probe" to the asoc tree Mark Brown
2016-09-14 17:15   ` Mark Brown
2016-09-14 17:15   ` Mark Brown

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