ASoC: dapm: deprecate MICBIAS widget type

Commit 086d7f804e26 ("ASoC: Convert WM8962 MICBIAS to a supply widget",
2011-09-23) says:

	A supply widget is generally clearer than a MICBIAS widget and a
	mic bias is just a type of supply so use a supply widget for the
	MICBIAS. This also avoids confusion with the routing when
	connected to multiple inputs.

but this has never been documented as a policy.  Add some comments to
make it clear.

Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index 97069466c38dd90ffb518fc8b367073c787697be..3101d53468aad5e1e86f7d65a90fdc37ffbafd8f 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -100,6 +100,7 @@ struct device;
 {       .id = snd_soc_dapm_mixer_named_ctl, .name = wname, \
        SND_SOC_DAPM_INIT_REG_VAL(wreg, wshift, winvert), \
        .kcontrol_news = wcontrols, .num_kcontrols = wncontrols}
+/* DEPRECATED: use SND_SOC_DAPM_SUPPLY */
 #define SND_SOC_DAPM_MICBIAS(wname, wreg, wshift, winvert) \
 {      .id = snd_soc_dapm_micbias, .name = wname, \
        SND_SOC_DAPM_INIT_REG_VAL(wreg, wshift, winvert), \
@@ -473,7 +474,7 @@ enum snd_soc_dapm_type {
        snd_soc_dapm_out_drv,                   /* output driver */
        snd_soc_dapm_adc,                       /* analog to digital converter */
        snd_soc_dapm_dac,                       /* digital to analog converter */
-       snd_soc_dapm_micbias,           /* microphone bias (power) */
+       snd_soc_dapm_micbias,           /* microphone bias (power) - DEPRECATED: use snd_soc_dapm_supply */
        snd_soc_dapm_mic,                       /* microphone */
        snd_soc_dapm_hp,                        /* headphones */
        snd_soc_dapm_spk,                       /* speaker */