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ALSA: snd-usb-6fire: add tlv to controls 

Remove the soft log-conversion and add a dB scale according to
the DAC documentation instead.

Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Torsten Schenk 2012-02-22 15:20:54 +01:00 committed by Takashi Iwai
parent c596758f57
commit 8e247a9c90
1 changed files with 9 additions and 25 deletions
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34
sound/usb/6fire/control.c
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@ -15,6 +15,7 @@
#include <linux/interrupt.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "control.h"
#include "comm.h"
@ -23,26 +24,6 @@
static char *opt_coax_texts[2] = { "Optical", "Coax" };
static char *line_phono_texts[2] = { "Line", "Phono" };
/*
* calculated with $value\[i\] = 128 \cdot sqrt[3]{\frac{i}{128}}$
* this is done because the linear values cause rapid degredation
* of volume in the uppermost region.
*/
static const u8 log_volume_table[128] = {
0x00, 0x19, 0x20, 0x24, 0x28, 0x2b, 0x2e, 0x30, 0x32, 0x34,
0x36, 0x38, 0x3a, 0x3b, 0x3d, 0x3e, 0x40, 0x41, 0x42, 0x43,
0x44, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x53, 0x54, 0x55, 0x56,
0x56, 0x57, 0x58, 0x58, 0x59, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c,
0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62,
0x63, 0x63, 0x64, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x68,
0x68, 0x69, 0x69, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c,
0x6d, 0x6d, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71,
0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75,
0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79,
0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c,
0x7d, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f };
/*
* data that needs to be sent to device. sets up card internal stuff.
* values dumped from windows driver and filtered by trial'n'error.
@ -69,6 +50,8 @@ static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 };
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);
enum {
DIGITAL_THRU_ONLY_SAMPLERATE = 3
};
@ -78,8 +61,7 @@ static void usb6fire_control_master_vol_update(struct control_runtime *rt)
struct comm_runtime *comm_rt = rt->chip->comm;
if (comm_rt) {
/* set volume */
comm_rt->write8(comm_rt, 0x12, 0x0f, 0x7f -
log_volume_table[rt->master_vol]);
comm_rt->write8(comm_rt, 0x12, 0x0f, 180 - rt->master_vol);
/* unmute */
comm_rt->write8(comm_rt, 0x12, 0x0e, 0x00);
}
@ -170,7 +152,7 @@ static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 127;
uinfo->value.integer.max = 180;
return 0;
}
@ -291,10 +273,12 @@ static struct __devinitdata snd_kcontrol_new elements[] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Master Playback Volume",
.index = 0,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ,
.info = usb6fire_control_master_vol_info,
.get = usb6fire_control_master_vol_get,
.put = usb6fire_control_master_vol_put
.put = usb6fire_control_master_vol_put,
.tlv = { .p = tlv_output }
},
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,