path: root/sound/pci/emu10k1/emumixer.c

/*
 *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>,
 *                   Takashi Iwai <tiwai@suse.de>
 *                   Creative Labs, Inc.
 *  Routines for control of EMU10K1 chips / mixer routines
 *  Multichannel PCM support Copyright (c) Lee Revell <rlrevell@joe-job.com>
 *
 *  BUGS:
 *    --
 *
 *  TODO:
 *    --
 *
 *   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/init.h>
#include <sound/core.h>
#include <sound/emu10k1.h>

#define AC97_ID_STAC9758	0x83847658

static int snd_emu10k1_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	uinfo->count = 1;
	return 0;
}

static int snd_emu10k1_spdif_get(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	unsigned long flags;

	spin_lock_irqsave(&emu->reg_lock, flags);
	ucontrol->value.iec958.status[0] = (emu->spdif_bits[idx] >> 0) & 0xff;
	ucontrol->value.iec958.status[1] = (emu->spdif_bits[idx] >> 8) & 0xff;
	ucontrol->value.iec958.status[2] = (emu->spdif_bits[idx] >> 16) & 0xff;
	ucontrol->value.iec958.status[3] = (emu->spdif_bits[idx] >> 24) & 0xff;
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return 0;
}

static int snd_emu10k1_spdif_get_mask(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.iec958.status[0] = 0xff;
	ucontrol->value.iec958.status[1] = 0xff;
	ucontrol->value.iec958.status[2] = 0xff;
	ucontrol->value.iec958.status[3] = 0xff;
	return 0;
}

#if 0
static int snd_audigy_spdif_output_rate_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static char *texts[] = {"44100", "48000", "96000"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_audigy_spdif_output_rate_get(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	unsigned int tmp;
	unsigned long flags;
	

	spin_lock_irqsave(&emu->reg_lock, flags);
	tmp = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, 0);
	switch (tmp & A_SPDIF_RATE_MASK) {
	case A_SPDIF_44100:
		ucontrol->value.enumerated.item[0] = 0;
		break;
	case A_SPDIF_48000:
		ucontrol->value.enumerated.item[0] = 1;
		break;
	case A_SPDIF_96000:
		ucontrol->value.enumerated.item[0] = 2;
		break;
	default:
		ucontrol->value.enumerated.item[0] = 1;
	}
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return 0;
}

static int snd_audigy_spdif_output_rate_put(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int reg, val, tmp;
	unsigned long flags;

	switch(ucontrol->value.enumerated.item[0]) {
	case 0:
		val = A_SPDIF_44100;
		break;
	case 1:
		val = A_SPDIF_48000;
		break;
	case 2:
		val = A_SPDIF_96000;
		break;
	default:
		val = A_SPDIF_48000;
		break;
	}

	
	spin_lock_irqsave(&emu->reg_lock, flags);
	reg = snd_emu10k1_ptr_read(emu, A_SPDIF_SAMPLERATE, 0);
	tmp = reg & ~A_SPDIF_RATE_MASK;
	tmp |= val;
	if ((change = (tmp != reg)))
		snd_emu10k1_ptr_write(emu, A_SPDIF_SAMPLERATE, 0, tmp);
	spin_unlock_irqrestore(&emu->reg_lock, flags);
	return change;
}

static struct snd_kcontrol_new snd_audigy_spdif_output_rate =
{
	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =         "Audigy SPDIF Output Sample Rate",
	.count =	1,
	.info =         snd_audigy_spdif_output_rate_info,
	.get =          snd_audigy_spdif_output_rate_get,
	.put =          snd_audigy_spdif_output_rate_put
};
#endif

static int snd_emu10k1_spdif_put(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_emu10k1 *emu = snd_kcontrol_chip(kcontrol);
	unsigned int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
	int change;
	unsigned int val;
	unsigned long flags;

	val = (ucontrol->value.iec958.status[0] << 0) |
	      (ucontrol->value.iec958.status[1] << 8) |
	      (ucontrol->value.iec958.status[2] << 16) |
	      (ucontrol->value.iec958.status[3] << 24);
	spin_lock_irqsave(&emu->reg_lock, flags);
	change = val != emu->spdif_bits[idx];
	if (change) {
		snd_emu10k1_ptr_write(emu, SPCS0 + idx, 0, val);
		emu->spdif_bits[idx] = val;
	}