[ALSA] oxygen: generalize handling of DAC volume limits

Add fields for the DAC volume limits to the module structure so that
model drivers do not need to install their own control info handlers.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

6 files changed, 17 insertions, 28 deletions

diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index b67888f..bf39c72 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -153,6 +153,8 @@ static const struct oxygen_model model_hifier = {
 		       PLAYBACK_1_TO_SPDIF |
 		       CAPTURE_0_FROM_I2S_1,
 	.dac_channels = 2,
+	.dac_volume_min = 0,
+	.dac_volume_max = 255,
 	.function_flags = OXYGEN_FUNCTION_SPI,
 	.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 	.adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci/oxygen/oxygen.c
index b3b7771..7181697 100644
--- a/sound/pci/oxygen/oxygen.c
+++ b/sound/pci/oxygen/oxygen.c
@@ -278,6 +278,8 @@ static const struct oxygen_model model_generic = {
 		       CAPTURE_1_FROM_SPDIF |
 		       CAPTURE_2_FROM_AC97_1,
 	.dac_channels = 8,
+	.dac_volume_min = 0,
+	.dac_volume_max = 255,
 	.function_flags = OXYGEN_FUNCTION_SPI |
 			  OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 	.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
@@ -303,6 +305,8 @@ static const struct oxygen_model model_meridian = {
 		       CAPTURE_1_FROM_SPDIF |
 		       CAPTURE_2_FROM_AC97_1,
 	.dac_channels = 8,
+	.dac_volume_min = 0,
+	.dac_volume_max = 255,
 	.misc_flags = OXYGEN_MISC_MIDI,
 	.function_flags = OXYGEN_FUNCTION_SPI |
 			  OXYGEN_FUNCTION_ENABLE_SPI_4_5,
diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
index 7efbf54..36f2f81 100644
--- a/sound/pci/oxygen/oxygen.h
+++ b/sound/pci/oxygen/oxygen.h
@@ -103,6 +103,8 @@ struct oxygen_model {
 	size_t model_data_size;
 	unsigned int pcm_dev_cfg;
 	u8 dac_channels;
+	u8 dac_volume_min;
+	u8 dac_volume_max;
 	u8 misc_flags;
 	u8 function_flags;
 	u16 dac_i2s_format;
diff --git a/sound/pci/oxygen/oxygen_lib.c b/sound/pci/oxygen/oxygen_lib.c
index 39e4b7a..b7aa9fc 100644
--- a/sound/pci/oxygen/oxygen_lib.c
+++ b/sound/pci/oxygen/oxygen_lib.c
@@ -221,7 +221,7 @@ static void oxygen_init(struct oxygen *chip)
 
 	chip->dac_routing = 1;
 	for (i = 0; i < 8; ++i)
-		chip->dac_volume[i] = 0xff;
+		chip->dac_volume[i] = chip->model->dac_volume_max;
 	chip->spdif_playback_enable = 1;
 	chip->spdif_bits = OXYGEN_SPDIF_C | OXYGEN_SPDIF_ORIGINAL |
 		(IEC958_AES1_CON_PCM_CODER << OXYGEN_SPDIF_CATEGORY_SHIFT);
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index 2cb9144..056581e 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -32,8 +32,8 @@ static int dac_volume_info(struct snd_kcontrol *ctl,
 
 	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 	info->count = chip->model->dac_channels;
-	info->value.integer.min = 0;
-	info->value.integer.max = 0xff;
+	info->value.integer.min = chip->model->dac_volume_min;
+	info->value.integer.max = chip->model->dac_volume_max;
 	return 0;
 }
 
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index 6f5c253..37f53a8 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -219,10 +219,7 @@ static void xonar_d2x_init(struct oxygen *chip)
 static void xonar_dx_init(struct oxygen *chip)
 {
 	struct xonar_data *data = chip->model_data;
-	unsigned int i;
 
-	for (i = 0; i < 8; ++i)
-		chip->dac_volume[i] = 127;
 	data->anti_pop_delay = 800;
 	data->output_enable_bit = GPIO_DX_OUTPUT_ENABLE;
 	data->ext_power_reg = OXYGEN_GPI_DATA;
@@ -414,26 +411,6 @@ static void xonar_gpio_changed(struct oxygen *chip)
 	}
 }
 
-static int pcm1796_volume_info(struct snd_kcontrol *ctl,
-			       struct snd_ctl_elem_info *info)
-{
-	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	info->count = 8;
-	info->value.integer.min = 0x0f;
-	info->value.integer.max = 0xff;
-	return 0;
-}
-
-static int cs4362a_volume_info(struct snd_kcontrol *ctl,
-			       struct snd_ctl_elem_info *info)
-{
-	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
-	info->count = 8;
-	info->value.integer.min = 0;
-	info->value.integer.max = 127;
-	return 0;
-}
-
 static int alt_switch_get(struct snd_kcontrol *ctl,
 			  struct snd_ctl_elem_value *value)
 {
@@ -526,7 +503,6 @@ static int xonar_d2_control_filter(struct snd_kcontrol_new *template)
 {
 	if (!strcmp(template->name, "Master Playback Volume")) {
 		template->access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
-		template->info = pcm1796_volume_info;
 		template->tlv.p = pcm1796_db_scale;
 	} else if (!strncmp(template->name, "CD Capture ", 11)) {
 		/* CD in is actually connected to the video in pin */
@@ -539,7 +515,6 @@ static int xonar_dx_control_filter(struct snd_kcontrol_new *template)
 {
 	if (!strcmp(template->name, "Master Playback Volume")) {
 		template->access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
-		template->info = cs4362a_volume_info;
 		template->tlv.p = cs4362a_db_scale;
 	} else if (!strncmp(template->name, "CD Capture ", 11)) {
 		return 1; /* no CD input */
@@ -577,6 +552,8 @@ static const struct oxygen_model xonar_models[] = {
 			       CAPTURE_0_FROM_I2S_2 |
 			       CAPTURE_1_FROM_SPDIF,
 		.dac_channels = 8,
+		.dac_volume_min = 0x0f,
+		.dac_volume_max = 0xff,
 		.misc_flags = OXYGEN_MISC_MIDI,
 		.function_flags = OXYGEN_FUNCTION_SPI |
 				  OXYGEN_FUNCTION_ENABLE_SPI_4_5,
@@ -603,6 +580,8 @@ static const struct oxygen_model xonar_models[] = {
 			       CAPTURE_0_FROM_I2S_2 |
 			       CAPTURE_1_FROM_SPDIF,
 		.dac_channels = 8,
+		.dac_volume_min = 0x0f,
+		.dac_volume_max = 0xff,
 		.misc_flags = OXYGEN_MISC_MIDI,
 		.function_flags = OXYGEN_FUNCTION_SPI |
 				  OXYGEN_FUNCTION_ENABLE_SPI_4_5,
@@ -629,6 +608,8 @@ static const struct oxygen_model xonar_models[] = {
 			       PLAYBACK_1_TO_SPDIF |
 			       CAPTURE_0_FROM_I2S_2,
 		.dac_channels = 8,
+		.dac_volume_min = 0,
+		.dac_volume_max = 127,
 		.function_flags = OXYGEN_FUNCTION_2WIRE,
 		.dac_i2s_format = OXYGEN_I2S_FORMAT_LJUST,
 		.adc_i2s_format = OXYGEN_I2S_FORMAT_LJUST,