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    Subject[PATCH 12/23] intel_sst: Headphone Automute support
    Date
    From: xingchao <xingchao.wang@intel.com>

    When detected a Jack event, Audio sound routes between internal speaker
    and headphone/headset automatically.

    Signed-off-by: xingchao <xingchao.wang@intel.com>
    Signed-off-by: Alan Cox <alan@linux.intel.com>
    ---

    drivers/staging/intel_sst/intelmid_v2_control.c | 15 +++++++++++++++
    1 files changed, 15 insertions(+), 0 deletions(-)


    diff --git a/drivers/staging/intel_sst/intelmid_v2_control.c b/drivers/staging/intel_sst/intelmid_v2_control.c
    index 3d90f45..7cae970 100644
    --- a/drivers/staging/intel_sst/intelmid_v2_control.c
    +++ b/drivers/staging/intel_sst/intelmid_v2_control.c
    @@ -996,6 +996,19 @@ static int nc_get_vol(int dev_id, int *value)
    return retval;
    }

    +static void hp_automute(enum snd_jack_types type, int present)
    +{
    + u8 in = DMIC;
    + u8 out = INTERNAL_SPKR;
    + if (present) {
    + if (type == SND_JACK_HEADSET)
    + in = HS_MIC;
    + out = STEREO_HEADPHONE;
    + }
    + nc_set_selected_input_dev(in);
    + nc_set_selected_output_dev(out);
    +}
    +
    static void nc_pmic_irq_cb(void *cb_data, u8 intsts)
    {
    u8 value = 0;
    @@ -1016,6 +1029,7 @@ static void nc_pmic_irq_cb(void *cb_data, u8 intsts)
    present = (value == 0x1) ? 1 : 0;
    jack_event_flag = 1;
    mjack->jack.type = SND_JACK_HEADSET;
    + hp_automute(SND_JACK_HEADSET, present);
    }

    if (intsts & 0x2) {
    @@ -1024,6 +1038,7 @@ static void nc_pmic_irq_cb(void *cb_data, u8 intsts)
    present = (value == 0x2) ? 1 : 0;
    jack_event_flag = 1;
    mjack->jack.type = SND_JACK_HEADPHONE;
    + hp_automute(SND_JACK_HEADPHONE, present);
    }

    if (intsts & 0x4) {


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