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Commit 06bb4e74 authored by Torsten Schenk's avatar Torsten Schenk Committed by Takashi Iwai
Browse files

ALSA: snd-usb-6fire: add analog input volume control 



Add a stereo volume control for analog input channel pair 1/2.

Signed-off-by: default avatarTorsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent d97c735a

sound/usb/6fire/control.c

+71 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01}; 
static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00};



static DECLARE_TLV_DB_MINMAX(tlv_output, -9000, 0);

static DECLARE_TLV_DB_MINMAX(tlv_input, -1500, 1500);



enum {

	DIGITAL_THRU_ONLY_SAMPLERATE = 3
@@ -82,6 +83,20 @@ static void usb6fire_control_output_mute_update(struct control_runtime *rt) 
		comm_rt->write8(comm_rt, 0x12, 0x0e, ~rt->output_mute);

}



static void usb6fire_control_input_vol_update(struct control_runtime *rt)

{

	struct comm_runtime *comm_rt = rt->chip->comm;

	int i;



	if (comm_rt)

		for (i = 0; i < 2; i++)

			if (!(rt->ivol_updated & (1 << i))) {

				comm_rt->write8(comm_rt, 0x12, 0x1c + i,

					rt->input_vol[i] & 0x3f);

				rt->ivol_updated |= 1 << i;

			}

}



static void usb6fire_control_line_phono_update(struct control_runtime *rt)

{

	struct comm_runtime *comm_rt = rt->chip->comm;
@@ -261,6 +276,50 @@ static int usb6fire_control_output_mute_get(struct snd_kcontrol *kcontrol, 
	return 0;

}



static int usb6fire_control_input_vol_info(struct snd_kcontrol *kcontrol,

		struct snd_ctl_elem_info *uinfo)

{

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;

	uinfo->count = 2;

	uinfo->value.integer.min = 0;

	uinfo->value.integer.max = 30;

	return 0;

}



static int usb6fire_control_input_vol_put(struct snd_kcontrol *kcontrol,

		struct snd_ctl_elem_value *ucontrol)

{

	struct control_runtime *rt = snd_kcontrol_chip(kcontrol);

	int changed = 0;



	if (rt->input_vol[0] != ucontrol->value.integer.value[0]) {

		rt->input_vol[0] = ucontrol->value.integer.value[0] - 15;

		rt->ivol_updated &= ~(1 << 0);

		changed = 1;

	}

	if (rt->input_vol[1] != ucontrol->value.integer.value[1]) {

		rt->input_vol[1] = ucontrol->value.integer.value[1] - 15;

		rt->ivol_updated &= ~(1 << 1);

		changed = 1;

	}



	if (changed)

		usb6fire_control_input_vol_update(rt);



	return changed;

}



static int usb6fire_control_input_vol_get(struct snd_kcontrol *kcontrol,

		struct snd_ctl_elem_value *ucontrol)

{

	struct control_runtime *rt = snd_kcontrol_chip(kcontrol);



	ucontrol->value.integer.value[0] = rt->input_vol[0] + 15;

	ucontrol->value.integer.value[1] = rt->input_vol[1] + 15;



	return 0;

}



static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,

		struct snd_ctl_elem_info *uinfo)

{
@@ -454,6 +513,17 @@ static struct __devinitdata snd_kcontrol_new elements[] = { 
		.get = usb6fire_control_digital_thru_get,

		.put = usb6fire_control_digital_thru_put

	},

	{

		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,

		.name = "Analog Capture Volume",

		.index = 0,

		.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |

			SNDRV_CTL_ELEM_ACCESS_TLV_READ,

		.info = usb6fire_control_input_vol_info,

		.get = usb6fire_control_input_vol_get,

		.put = usb6fire_control_input_vol_put,

		.tlv = { .p = tlv_input }

	},

	{}

};
@@ -518,6 +588,7 @@ int __devinit usb6fire_control_init(struct sfire_chip *chip) 
	usb6fire_control_line_phono_update(rt);

	usb6fire_control_output_vol_update(rt);

	usb6fire_control_output_mute_update(rt);

	usb6fire_control_input_vol_update(rt);

	usb6fire_control_streaming_update(rt);



	ret = usb6fire_control_add_virtual(rt, chip->card,

sound/usb/6fire/control.h

+2 −0
Original line number Diff line number Diff line
@@ -46,6 +46,8 @@ struct control_runtime { 
	u8 output_vol[6];

	u8 ovol_updated;

	u8 output_mute;

	s8 input_vol[2];

	u8 ivol_updated;

};



int __devinit usb6fire_control_init(struct sfire_chip *chip);