[ALSA] ASoC: Add SOC_DOUBLE_S8_TLV control type

The SOC_DOUBLE_S8_TLV control type was originally implemented in the
UDA1380 driver by Philipp Zabel and was moved into the core by me.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/sound/soc.h b/include/sound/soc.h
index bca9538d9e50..9fa2093e74eb 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -73,6 +73,15 @@
         .get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
         .private_value = (reg_left) | ((shift) << 8)  | \
                 ((max) << 12) | ((invert) << 20) | ((reg_right) << 24) }
+#define SOC_DOUBLE_S8_TLV(xname, reg, min, max, tlv_array) \
+{       .iface  = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
+        .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
+                  SNDRV_CTL_ELEM_ACCESS_READWRITE, \
+        .tlv.p  = (tlv_array), \
+        .info   = snd_soc_info_volsw_s8, .get = snd_soc_get_volsw_s8, \
+        .put    = snd_soc_put_volsw_s8, \
+        .private_value = (reg) | (((signed char)max) << 16) | \
+                         (((signed char)min) << 24) }
 #define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xtexts) \
 {       .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
         .mask = xmask, .texts = xtexts }
@@ -267,6 +276,12 @@ int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
         struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_volsw_2r(struct snd_kcontrol *kcontrol,
         struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_volsw_s8(struct snd_kcontrol *kcontrol,
+        struct snd_ctl_elem_info *uinfo);
+int snd_soc_get_volsw_s8(struct snd_kcontrol *kcontrol,
+        struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
+        struct snd_ctl_elem_value *ucontrol);
 
 /* SoC PCM stream information */
 struct snd_soc_pcm_stream {