From 87b57fe2d3fb1ce33671b944db9a4cbe0cd065ea Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 14 Apr 2008 15:27:30 +0200 Subject: [PATCH] [ALSA] wm9713: Don't control touch screen power on suspend Leave the power bit for the touch screen alone when suspending the WM9713 so that the touch screen driver can handle it. This allows the touch screen to be used as a wakeup source when the system is suspended. Signed-off-by: Mark Brown Signed-off-by: Takashi Iwai --- sound/soc/codecs/wm9713.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c index e3174c4d98..1f24116144 100644 --- a/sound/soc/codecs/wm9713.c +++ b/sound/soc/codecs/wm9713.c @@ -1132,8 +1132,17 @@ static int wm9713_soc_suspend(struct platform_device *pdev, { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = socdev->codec; + u16 reg; + + /* Disable everything except touchpanel - that will be handled + * by the touch driver and left disabled if touch is not in + * use. */ + reg = ac97_read(codec, AC97_EXTENDED_MID); + ac97_write(codec, AC97_EXTENDED_MID, reg | 0x7fff); + ac97_write(codec, AC97_EXTENDED_MSTATUS, 0xffff); + ac97_write(codec, AC97_POWERDOWN, 0x6f00); + ac97_write(codec, AC97_POWERDOWN, 0xffff); - wm9713_dapm_event(codec, SNDRV_CTL_POWER_D3cold); return 0; } -- 2.39.5