ASoC: dapm: Introduce DAPM_DOUBLE_R dual channel dual register control type

A DAPM_DOUBLE_R control type can be used for dual channel mixer input
selectors / mute controls across 2 registers, 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>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index f74ec19..a466f4b 100644 (file)
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -277,6 +277,11 @@ struct device;
        .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_DOUBLE_R(xname, lreg, rreg, shift, 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_R_VALUE(lreg, rreg, shift, max, invert) }
 #define SOC_DAPM_SINGLE(xname, reg, shift, max, invert) \
 {      .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
        .info = snd_soc_info_volsw, \