ASoC: core: Combine snd_soc_get_volsw/get_volsw_2r functions

Handle the get_volsw/get_volsw_2r in one function.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

include/sound/soc.h

@@ -64,7 +64,7 @@
 #define SOC_DOUBLE_R(xname, reg_left, reg_right, xshift, xmax, xinvert) \
 {	.iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
 	.info = snd_soc_info_volsw, \
-	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
+	.get = snd_soc_get_volsw, .put = snd_soc_put_volsw_2r, \
 	.private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 					    xmax, xinvert) }
 #define SOC_DOUBLE_TLV(xname, reg, shift_left, shift_right, max, invert, tlv_array) \
@@ -82,7 +82,7 @@
 		 SNDRV_CTL_ELEM_ACCESS_READWRITE,\
 	.tlv.p = (tlv_array), \
 	.info = snd_soc_info_volsw, \
-	.get = snd_soc_get_volsw_2r, .put = snd_soc_put_volsw_2r, \
+	.get = snd_soc_get_volsw, .put = snd_soc_put_volsw_2r, \
 	.private_value = SOC_DOUBLE_R_VALUE(reg_left, reg_right, xshift, \
 					    xmax, xinvert) }
 #define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
@@ -393,8 +393,6 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
 int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 	struct snd_ctl_elem_value *ucontrol);
-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,

sound/soc/soc-core.c

@@ -2281,7 +2281,8 @@ EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
  * @kcontrol: mixer control
  * @ucontrol: control element information
  *
- * Callback to get the value of a single mixer control.
+ * Callback to get the value of a single mixer control, or a double mixer
+ * control that spans 2 registers.
  *
  * Returns 0 for success.
  */
@@ -2292,6 +2293,7 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 		(struct soc_mixer_control *)kcontrol->private_value;
 	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
 	unsigned int reg = mc->reg;
+	unsigned int reg2 = mc->rreg;
 	unsigned int shift = mc->shift;
 	unsigned int rshift = mc->rshift;
 	int max = mc->max;
@@ -2300,13 +2302,18 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
 
 	ucontrol->value.integer.value[0] =
 		(snd_soc_read(codec, reg) >> shift) & mask;
-	if (shift != rshift)
-		ucontrol->value.integer.value[1] =
-			(snd_soc_read(codec, reg) >> rshift) & mask;
-	if (invert) {
+	if (invert)
 		ucontrol->value.integer.value[0] =
 			max - ucontrol->value.integer.value[0];
-		if (shift != rshift)
+
+	if (snd_soc_volsw_is_stereo(mc)) {
+		if (reg == reg2)
+			ucontrol->value.integer.value[1] =
+				(snd_soc_read(codec, reg) >> rshift) & mask;
+		else
+			ucontrol->value.integer.value[1] =
+				(snd_soc_read(codec, reg2) >> shift) & mask;
+		if (invert)
 			ucontrol->value.integer.value[1] =
 				max - ucontrol->value.integer.value[1];
 	}
@@ -2354,43 +2361,6 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
 }
 EXPORT_SYMBOL_GPL(snd_soc_put_volsw);
 
-/**
- * snd_soc_get_volsw_2r - double mixer get callback
- * @kcontrol: mixer control
- * @ucontrol: control element information
- *
- * Callback to get the value of a double mixer control that spans 2 registers.
- *
- * Returns 0 for success.
- */
-int snd_soc_get_volsw_2r(struct snd_kcontrol *kcontrol,
-	struct snd_ctl_elem_value *ucontrol)
-{
-	struct soc_mixer_control *mc =
-		(struct soc_mixer_control *)kcontrol->private_value;
-	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
-	unsigned int reg = mc->reg;
-	unsigned int reg2 = mc->rreg;
-	unsigned int shift = mc->shift;
-	int max = mc->max;
-	unsigned int mask = (1 << fls(max)) - 1;
-	unsigned int invert = mc->invert;
-
-	ucontrol->value.integer.value[0] =
-		(snd_soc_read(codec, reg) >> shift) & mask;
-	ucontrol->value.integer.value[1] =
-		(snd_soc_read(codec, reg2) >> shift) & mask;
-	if (invert) {
-		ucontrol->value.integer.value[0] =
-			max - ucontrol->value.integer.value[0];
-		ucontrol->value.integer.value[1] =
-			max - ucontrol->value.integer.value[1];
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL_GPL(snd_soc_get_volsw_2r);
-
 /**
  * snd_soc_put_volsw_2r - double mixer set callback
  * @kcontrol: mixer control