[PORT FROM R2]audio: add codec control for high perf mode

BZ: 21177

This patch add a new kcontrol for configuring the high perfomance mode for
codec. This control should be set for high_prof mode to get bettr audio quality
and in low_power mode for getting better battery life.
Setting hp mode for simultanoesu routing (in codec) to both headset and speaker
doesnot work. It will work only in lp mode.

Change-Id: I7026c572a0a330c5a324a6ad3700bdf34ac88a3c
Old-Change-Id: I7a46ad9a57662216ee49decef1b0eccb74e86fa1
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Reviewed-on: http://android.intel.com:8080/37816
Reviewed-by: M, Arulselvan <arulselvan.m@intel.com>
Tested-by: M, Arulselvan <arulselvan.m@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>

diff --git a/sound/soc/codecs/sn95031.c b/sound/soc/codecs/sn95031.c
index d688eab..474f048 100644 (file)
--- a/sound/soc/codecs/sn95031.c
+++ b/sound/soc/codecs/sn95031.c
@@ -543,6 +543,42 @@ static const  char *sn95031_jack_debounce_text[] = {"61us", "122us", "244us",
 static const struct soc_enum sn95031_jack_debounce_enum =
        SOC_ENUM_SINGLE(SN95031_BTNCTRL1, 4, 12, sn95031_jack_debounce_text);
 
+static const  char *sn95031_dac_mode_text[] = {"Low Power", "High Performance"};
+static const struct soc_enum sn95031_dac_mode_enum =
+       SOC_ENUM_SINGLE_EXT(2, sn95031_dac_mode_text);
+static unsigned int sn95031_dac_mode;
+static int sn95031_set_dac_mode(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_value *ucontrol)
+{
+       u8 mode = ucontrol->value.integer.value[0];
+       struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);
+
+       if (ucontrol->value.integer.value[0] == sn95031_dac_mode)
+               return 0;
+       if (mode) {
+               pr_debug("setting hp mode\n");
+               /* aprt from the lp bit we also need to disbale the SSR2
+                * PWRMODE bit.
+                */
+               snd_soc_update_bits(codec, SN95031_SSR2, 0x10, 0);
+               snd_soc_update_bits(codec, SN95031_DACCONFIG, 0x10, 0x10);
+       } else {
+               pr_debug("setting lp mode\n");
+               snd_soc_update_bits(codec, SN95031_SSR2, 0x10, 0x10);
+               snd_soc_update_bits(codec, SN95031_DACCONFIG, 0x10, 0);
+       }
+       snd_soc_dapm_sync(&codec->dapm);
+       sn95031_dac_mode = ucontrol->value.integer.value[0];
+       return 0;
+
+}
+static int sn95031_get_dac_mode(struct snd_kcontrol *kcontrol,
+                                       struct snd_ctl_elem_value *ucontrol)
+{
+       ucontrol->value.integer.value[0] = sn95031_dac_mode;
+       return 0;
+}
+
 static const struct snd_kcontrol_new sn95031_snd_controls[] = {
        SOC_ENUM("Mic1Mode Capture Route", sn95031_micmode1_enum),
        SOC_ENUM("Mic2Mode Capture Route", sn95031_micmode2_enum),
@@ -585,6 +621,8 @@ static const struct snd_kcontrol_new sn95031_snd_controls[] = {
        SOC_ENUM("Vibra2 Start", sn95031_vibra2_start_enum),
        SOC_ENUM("Vibra2 Brake", sn95031_vibra2_brake_enum),
        SOC_ENUM("Jack Debounce Time", sn95031_jack_debounce_enum),
+       SOC_ENUM_EXT("DAC Mode", sn95031_dac_mode_enum,
+                       sn95031_get_dac_mode, sn95031_set_dac_mode),
 };
 
 /* DAPM widgets */
@@ -1471,6 +1509,7 @@ static int sn95031_codec_probe(struct snd_soc_codec *codec)
        /* dac mode and lineout workaround */
        snd_soc_write(codec, SN95031_SSR2, 0x10);
        snd_soc_write(codec, SN95031_SSR3, 0x40);
+       sn95031_dac_mode = 0;
 
        /* turn off all rails, will be enabled when required */
        snd_soc_write(codec, SN95031_VAUD, 0x24);