lkml.org 
[lkml]   [2019]   [Dec]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH 3.16 02/72] ASoC: sgtl5000: fix VAG power up timing
    3.16.79-rc1 review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Jean-Michel Hautbois <jhautbois@gmail.com>

    commit c803cc2dcd722e08020c1ba63bb5ceece4a19fdb upstream.

    When power up, a "pop" is heard on line-in and mic-in.
    An analysis of the PCM shows it lasts ~400ms
    and looks like a filter response.
    VAG power up should be delayed by 400ms as VAG power down is.

    Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@veo-labs.com>
    Signed-off-by: Mark Brown <broonie@kernel.org>
    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    ---
    sound/soc/codecs/sgtl5000.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/sound/soc/codecs/sgtl5000.c
    +++ b/sound/soc/codecs/sgtl5000.c
    @@ -175,6 +175,7 @@ static int power_vag_event(struct snd_so
    case SND_SOC_DAPM_POST_PMU:
    snd_soc_update_bits(w->codec, SGTL5000_CHIP_ANA_POWER,
    SGTL5000_VAG_POWERUP, SGTL5000_VAG_POWERUP);
    + msleep(400);
    break;

    case SND_SOC_DAPM_PRE_PMD:
    \
     
     \ /
      Last update: 2019-12-08 14:55    [W:4.088 / U:0.704 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site