path: root/sound/pci/pcxhr/pcxhr_mixer.c

#define __NO_VERSION__
/*
 * Driver for Digigram pcxhr compatible soundcards
 *
 * mixer callbacks
 *
 * Copyright (c) 2004 by Digigram <alsa@digigram.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <sound/driver.h>
#include <linux/time.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <sound/core.h>
#include "pcxhr.h"
#include "pcxhr_hwdep.h"
#include "pcxhr_core.h"
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/asoundef.h>
#include "pcxhr_mixer.h"


#define PCXHR_ANALOG_CAPTURE_LEVEL_MIN   0	/* -96.0 dB */
#define PCXHR_ANALOG_CAPTURE_LEVEL_MAX   255	/* +31.5 dB */
#define PCXHR_ANALOG_CAPTURE_ZERO_LEVEL  224	/* +16.0 dB ( +31.5 dB - fix level +15.5 dB ) */

#define PCXHR_ANALOG_PLAYBACK_LEVEL_MIN  0	/* -128.0 dB */
#define PCXHR_ANALOG_PLAYBACK_LEVEL_MAX  128	/*    0.0 dB */
#define PCXHR_ANALOG_PLAYBACK_ZERO_LEVEL 104	/*  -24.0 dB ( 0.0 dB - fix level +24.0 dB ) */

static const DECLARE_TLV_DB_SCALE(db_scale_analog_capture, -9600, 50, 3150);
static const DECLARE_TLV_DB_SCALE(db_scale_analog_playback, -10400, 100, 2400);

static int pcxhr_update_analog_audio_level(struct snd_pcxhr *chip, int is_capture, int channel)
{
	int err, vol;
	struct pcxhr_rmh rmh;

	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
	if (is_capture) {
		rmh.cmd[0] |= IO_NUM_REG_IN_ANA_LEVEL;
		rmh.cmd[2] = chip->analog_capture_volume[channel];
	} else {
		rmh.cmd[0] |= IO_NUM_REG_OUT_ANA_LEVEL;
		if (chip->analog_playback_active[channel])
			vol = chip->analog_playback_volume[channel];
		else
			vol = PCXHR_ANALOG_PLAYBACK_LEVEL_MIN;
		rmh.cmd[2] = PCXHR_ANALOG_PLAYBACK_LEVEL_MAX - vol;	/* playback analog levels are inversed */
	}
	rmh.cmd[1]  = 1 << ((2 * chip->chip_idx) + channel);	/* audio mask */
	rmh.cmd_len = 3;
	err = pcxhr_send_msg(chip->mgr, &rmh);
	if (err < 0) {
		snd_printk(KERN_DEBUG "error update_analog_audio_level card(%d) "
			   "is_capture(%d) err(%x)\n", chip->chip_idx, is_capture, err);
		return -EINVAL;
	}
	return 0;
}

/*
 * analog level control
 */
static int pcxhr_analog_vol_info(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	if (kcontrol->private_value == 0) {	/* playback */
		uinfo->value.integer.min = PCXHR_ANALOG_PLAYBACK_LEVEL_MIN;	/* -128 dB */
		uinfo->value.integer.max = PCXHR_ANALOG_PLAYBACK_LEVEL_MAX;	/* 0 dB */
	} else {				/* capture */
		uinfo->value.integer.min = PCXHR_ANALOG_CAPTURE_LEVEL_MIN;	/* -96 dB */
		uinfo->value.integer.max = PCXHR_ANALOG_CAPTURE_LEVEL_MAX;	/* 31.5 dB */
	}
	return 0;
}

static int pcxhr_analog_vol_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	mutex_lock(&chip->mgr->mixer_mutex);
	if (kcontrol->private_value == 0) {	/* playback */
		ucontrol->value.integer.value[0] = chip->analog_playback_volume[0];
		ucontrol->value.integer.value[1] = chip->analog_playback_volume[1];
	} else {				/* capture */
		ucontrol->value.integer.value[0] = chip->analog_capture_volume[0];
		ucontrol->value.integer.value[1] = chip->analog_capture_volume[1];
	}
	mutex_unlock(&chip->mgr->mixer_mutex);
	return 0;
}

static int pcxhr_analog_vol_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	int changed = 0;
	int is_capture,