ALSA: sb16: Use snd_ctl_enum_info()

... and reduce the open codes.  Also add missing const to text arrays.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/isa/sb/sb16_main.c

@@ -702,17 +702,11 @@ static int snd_sb16_get_dma_mode(struct snd_sb *chip)
 
 static int snd_sb16_dma_control_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 {
-	static char *texts[3] = {
+	static const char * const texts[3] = {
 		"Auto", "Playback", "Capture"
 	};
 
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 3;
-	if (uinfo->value.enumerated.item > 2)
-		uinfo->value.enumerated.item = 2;
-	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 3, texts);
 }
 
 static int snd_sb16_dma_control_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)

sound/isa/sb/sb_mixer.c

@@ -182,17 +182,11 @@ static int snd_sbmixer_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_
 
 static int snd_dt019x_input_sw_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 {
-	static const char *texts[5] = {
+	static const char * const texts[5] = {
 		"CD", "Mic", "Line", "Synth", "Master"
 	};
 
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 5;
-	if (uinfo->value.enumerated.item > 4)
-		uinfo->value.enumerated.item = 4;
-	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 5, texts);
 }
 
 static int snd_dt019x_input_sw_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
@@ -275,18 +269,11 @@ static int snd_dt019x_input_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl
 static int snd_als4k_mono_capture_route_info(struct snd_kcontrol *kcontrol,
 					     struct snd_ctl_elem_info *uinfo)
 {
-	static const char *texts[3] = {
+	static const char * const texts[3] = {
 		"L chan only", "R chan only", "L ch/2 + R ch/2"
 	};
 
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 3;
-	if (uinfo->value.enumerated.item > 2)
-		uinfo->value.enumerated.item = 2;
-	strcpy(uinfo->value.enumerated.name,
-	       texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 3, texts);
 }
 
 static int snd_als4k_mono_capture_route_get(struct snd_kcontrol *kcontrol,
@@ -335,17 +322,11 @@ static int snd_als4k_mono_capture_route_put(struct snd_kcontrol *kcontrol,
 
 static int snd_sb8mixer_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 {
-	static const char *texts[3] = {
+	static const char * const texts[3] = {
 		"Mic", "CD", "Line"
 	};
 
-	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
-	uinfo->count = 1;
-	uinfo->value.enumerated.items = 3;
-	if (uinfo->value.enumerated.item > 2)
-		uinfo->value.enumerated.item = 2;
-	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
-	return 0;
+	return snd_ctl_enum_info(uinfo, 1, 3, texts);
 }