ASoC: Provide microphone bias configuration for WM8962
Add the widget for MICBIAS power control and allow configuration of the
microphone bias setup via the platform data for the WM8962. When
microphone status signals are brought out to GPIO this should be
sufficient to enable microphone detection.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 4fa5de8..be34146 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -630,6 +630,8 @@
SND_SOC_DAPM_INPUT("IN4R"),
SND_SOC_DAPM_INPUT("Beep"),
+SND_SOC_DAPM_MICBIAS("MICBIAS", WM8962_PWR_MGMT_1, 1, 0),
+
SND_SOC_DAPM_SUPPLY("Class G", WM8962_CHARGE_PUMP_B, 0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("SYSCLK", WM8962_CLOCKING2, 5, 0, sysclk_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
@@ -1755,6 +1757,16 @@
if (pdata->spk_mono)
wm8962->reg_cache[WM8962_CLASS_D_CONTROL_2]
|= WM8962_SPK_MONO;
+
+ /* Micbias setup, detection enable and detection
+ * threasholds. */
+ if (pdata->mic_cfg)
+ snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
+ WM8962_MICDET_ENA |
+ WM8962_MICDET_THR_MASK |
+ WM8962_MICSHORT_THR_MASK |
+ WM8962_MICBIAS_LVL,
+ pdata->mic_cfg);
}
/* Latch volume update bits */