ASoc: msm: Add support for multiple inputs to kcontrol
Adds the macro SOC_SINGLE_MULTI_EXT which allows the user
to pass the number of integer inputs accepted by the control.
Change-Id: I75009672568d1e0979ecd577031e72bd87f310d2
Signed-off-by: Ben Romberger <bromberg@codeaurora.org>
diff --git a/include/sound/soc.h b/include/sound/soc.h
index e5f2bf0..2fcde6f 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -138,6 +138,14 @@
.private_value = (unsigned long)&(struct soc_mixer_control) \
{.reg = xreg, .shift = shift_left, .rshift = shift_right, \
.max = xmax, .platform_max = xmax, .invert = xinvert} }
+#define SOC_SINGLE_MULTI_EXT(xname, xreg, xshift, xmax, xinvert, xcount,\
+ xhandler_get, xhandler_put) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_multi_ext, \
+ .get = xhandler_get, .put = xhandler_put, \
+ .private_value = (unsigned long)&(struct soc_multi_mixer_control) \
+ {.reg = xreg, .shift = xshift, .rshift = xshift, .max = xmax, \
+ .count = xcount, .platform_max = xmax, .invert = xinvert} }
#define SOC_SINGLE_EXT_TLV(xname, xreg, xshift, xmax, xinvert,\
xhandler_get, xhandler_put, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
@@ -432,6 +440,8 @@
struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_volsw_s8(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_multi_ext(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
int snd_soc_limit_volume(struct snd_soc_codec *codec,
const char *name, int max);
int snd_soc_info_volsw_2r_sx(struct snd_kcontrol *kcontrol,
@@ -927,6 +937,12 @@
unsigned int reg, rreg, shift, rshift, invert;
};
+/* mixer multiple input control */
+struct soc_multi_mixer_control {
+ int min, max, platform_max, count;
+ unsigned int reg, rreg, shift, rshift, invert;
+};
+
/* enumerated kcontrol */
struct soc_enum {
unsigned short reg;
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index ee66479..219ae10 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3053,6 +3053,39 @@
EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
/**
+ * snd_soc_info_multi_ext - external single mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a single external mixer control.
+ * that accepts multiple input.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_multi_ext(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct soc_multi_mixer_control *mc =
+ (struct soc_multi_mixer_control *)kcontrol->private_value;
+ int platform_max;
+
+ if (!mc->platform_max)
+ mc->platform_max = mc->max;
+ platform_max = mc->platform_max;
+
+ if (platform_max == 1 && !strnstr(kcontrol->id.name, " Volume", 30))
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+ else
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+
+ uinfo->count = mc->count;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = platform_max;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_multi_ext);
+
+/**
* snd_soc_get_volsw - single mixer get callback
* @kcontrol: mixer control
* @ucontrol: control element information