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Subject[PATCH 03/12] ASoC: dapm: Introduce DAPM_DOUBLE dual channel control type
Date
A DAPM_DOUBLE control type can be used for dual channel mixer input
selectors / mute controls in one register, possibly toggling both
channels together.

The control is meant to be shared by 2 widgets, 1 for each channel,
such that the mixer control exposed to userspace remains a combined
stereo control.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
include/sound/soc-dapm.h | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index d5f4677776ce..f74ec19687f8 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -272,6 +272,11 @@ struct device;


/* dapm kcontrol types */
+#define SOC_DAPM_DOUBLE(xname, reg, lshift, rshift, max, invert) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_volsw, \
+ .get = snd_soc_dapm_get_volsw, .put = snd_soc_dapm_put_volsw, \
+ .private_value = SOC_DOUBLE_VALUE(reg, lshift, rshift, max, invert, 0) }
#define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_soc_info_volsw, \
--
2.9.3
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