pcxhr_mixer.c

linux2.6.16版本

static struct snd_kcontrol_new snd_pcxhr_pcm_vol =
{
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	/* name will be filled later */
	/* count will be filled later */
	.info =		pcxhr_digital_vol_info,		/* shared */
	.get =		pcxhr_pcm_vol_get,
	.put =		pcxhr_pcm_vol_put,
};


static int pcxhr_pcm_sw_get(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); /* index */

	down(&chip->mgr->mixer_mutex);
	ucontrol->value.integer.value[0] = chip->digital_playback_active[idx][0];
	ucontrol->value.integer.value[1] = chip->digital_playback_active[idx][1];
	up(&chip->mgr->mixer_mutex);
	return 0;
}

static int pcxhr_pcm_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	int changed = 0;
	int idx = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id); /* index */
	int i, j;

	down(&chip->mgr->mixer_mutex);
	j = idx;
	for (i = 0; i < 2; i++) {
		if (chip->digital_playback_active[j][i] != ucontrol->value.integer.value[i]) {
			chip->digital_playback_active[j][i] = ucontrol->value.integer.value[i];
			changed = 1;
		}
	}
	if (changed)
		pcxhr_update_playback_stream_level(chip, idx);
	up(&chip->mgr->mixer_mutex);
	return changed;
}

static struct snd_kcontrol_new pcxhr_control_pcm_switch = {
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =		"PCM Playback Switch",
	.count =	PCXHR_PLAYBACK_STREAMS,
	.info =		pcxhr_sw_info,		/* shared */
	.get =		pcxhr_pcm_sw_get,
	.put =		pcxhr_pcm_sw_put
};


/*
 * monitoring level control
 */

static int pcxhr_monitor_vol_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	down(&chip->mgr->mixer_mutex);
	ucontrol->value.integer.value[0] = chip->monitoring_volume[0];
	ucontrol->value.integer.value[1] = chip->monitoring_volume[1];
	up(&chip->mgr->mixer_mutex);
	return 0;
}

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

	down(&chip->mgr->mixer_mutex);
	for (i = 0; i < 2; i++) {
		if (chip->monitoring_volume[i] != ucontrol->value.integer.value[i]) {
			chip->monitoring_volume[i] = ucontrol->value.integer.value[i];
			if(chip->monitoring_active[i])	/* do only when monitoring is unmuted */
				/* update monitoring volume and mute */
				pcxhr_update_audio_pipe_level(chip, 0, i);
			changed = 1;
		}
	}
	up(&chip->mgr->mixer_mutex);
	return changed;
}

static struct snd_kcontrol_new pcxhr_control_monitor_vol = {
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =         "Monitoring Volume",
	.info =		pcxhr_digital_vol_info,		/* shared */
	.get =		pcxhr_monitor_vol_get,
	.put =		pcxhr_monitor_vol_put,
};

/*
 * monitoring switch control
 */

static int pcxhr_monitor_sw_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	down(&chip->mgr->mixer_mutex);
	ucontrol->value.integer.value[0] = chip->monitoring_active[0];
	ucontrol->value.integer.value[1] = chip->monitoring_active[1];
	up(&chip->mgr->mixer_mutex);
	return 0;
}

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

	down(&chip->mgr->mixer_mutex);
	for (i = 0; i < 2; i++) {
		if (chip->monitoring_active[i] != ucontrol->value.integer.value[i]) {
			chip->monitoring_active[i] = ucontrol->value.integer.value[i];
			changed |= (1<<i); /* mask 0x01 and 0x02 */
		}
	}
	if(changed & 0x01)
		/* update left monitoring volume and mute */
		pcxhr_update_audio_pipe_level(chip, 0, 0);
	if(changed & 0x02)
		/* update right monitoring volume and mute */
		pcxhr_update_audio_pipe_level(chip, 0, 1);

	up(&chip->mgr->mixer_mutex);
	return (changed != 0);
}

static struct snd_kcontrol_new pcxhr_control_monitor_sw = {
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =         "Monitoring Switch",
	.info =         pcxhr_sw_info,		/* shared */
	.get =          pcxhr_monitor_sw_get,
	.put =          pcxhr_monitor_sw_put
};



/*
 * audio source select
 */
#define PCXHR_SOURCE_AUDIO01_UER	0x000100
#define PCXHR_SOURCE_AUDIO01_SYNC	0x000200
#define PCXHR_SOURCE_AUDIO23_UER	0x000400
#define PCXHR_SOURCE_AUDIO45_UER	0x001000
#define PCXHR_SOURCE_AUDIO67_UER	0x040000

static int pcxhr_set_audio_source(struct snd_pcxhr* chip)
{
	struct pcxhr_rmh rmh;
	unsigned int mask, reg;
	unsigned int codec;
	int err, use_src, changed;

	switch (chip->chip_idx) {
	case 0 : mask = PCXHR_SOURCE_AUDIO01_UER; codec = CS8420_01_CS; break;
	case 1 : mask = PCXHR_SOURCE_AUDIO23_UER; codec = CS8420_23_CS; break;
	case 2 : mask = PCXHR_SOURCE_AUDIO45_UER; codec = CS8420_45_CS; break;
	case 3 : mask = PCXHR_SOURCE_AUDIO67_UER; codec = CS8420_67_CS; break;
	default: return -EINVAL;
	}
	reg = 0;	/* audio source from analog plug */
	use_src = 0;	/* do not activate codec SRC */

	if (chip->audio_capture_source != 0) {
		reg = mask;	/* audio source from digital plug */
		if (chip->audio_capture_source == 2)
			use_src = 1;
	}
	/* set the input source */
	pcxhr_write_io_num_reg_cont(chip->mgr, mask, reg, &changed);
	/* resync them (otherwise channel inversion possible) */
	if (changed) {
		pcxhr_init_rmh(&rmh, CMD_RESYNC_AUDIO_INPUTS);
		rmh.cmd[0] |= (1 << chip->chip_idx);
		err = pcxhr_send_msg(chip->mgr, &rmh);
		if (err)
			return err;
	}
	pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);	/* set codec SRC on off */
	rmh.cmd_len = 3;
	rmh.cmd[0] |= IO_NUM_UER_CHIP_REG;
	rmh.cmd[1] = codec;
	rmh.cmd[2] = (CS8420_DATA_FLOW_CTL & CHIP_SIG_AND_MAP_SPI) | (use_src ? 0x41 : 0x54);
	err = pcxhr_send_msg(chip->mgr, &rmh);
	if(err)
		return err;
	rmh.cmd[2] = (CS8420_CLOCK_SRC_CTL & CHIP_SIG_AND_MAP_SPI) | (use_src ? 0x41 : 0x49);
	err = pcxhr_send_msg(chip->mgr, &rmh);
	return err;
}

static int pcxhr_audio_src_info(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_info *uinfo)
{
	static char *texts[3] = {"Analog", "Digital", "Digi+SRC"};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	if (uinfo->value.enumerated.item > 2)
		uinfo->value.enumerated.item = 2;
	strcpy(uinfo->value.enumerated.name,
		texts[uinfo->value.enumerated.item]);
	return 0;
}

static int pcxhr_audio_src_get(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	ucontrol->value.enumerated.item[0] = chip->audio_capture_source;
	return 0;
}

static int pcxhr_audio_src_put(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
	int ret = 0;

	down(&chip->mgr->mixer_mutex);
	if (chip->audio_capture_source != ucontrol->value.enumerated.item[0]) {
		chip->audio_capture_source = ucontrol->value.enumerated.item[0];
		pcxhr_set_audio_source(chip);
		ret = 1;
	}
	up(&chip->mgr->mixer_mutex);
	return ret;
}

static struct snd_kcontrol_new pcxhr_control_audio_src = {
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =		"Capture Source",
	.info =		pcxhr_audio_src_info,
	.get =		pcxhr_audio_src_get,
	.put =		pcxhr_audio_src_put,
};


/*
 * clock type selection
 * enum pcxhr_clock_type {
 *		PCXHR_CLOCK_TYPE_INTERNAL = 0,
 *		PCXHR_CLOCK_TYPE_WORD_CLOCK,
 *		PCXHR_CLOCK_TYPE_AES_SYNC,
 *		PCXHR_CLOCK_TYPE_AES_1,
 *		PCXHR_CLOCK_TYPE_AES_2,
 *		PCXHR_CLOCK_TYPE_AES_3,
 *		PCXHR_CLOCK_TYPE_AES_4,
 *	};
 */

static int pcxhr_clock_type_info(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_info *uinfo)
{
	static char *texts[7] = {
		"Internal", "WordClock", "AES Sync", "AES 1", "AES 2", "AES 3", "AES 4"
	};
	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
	int clock_items = 3 + mgr->capture_chips;

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

static int pcxhr_clock_type_get(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
	ucontrol->value.enumerated.item[0] = mgr->use_clock_type;
	return 0;
}

static int pcxhr_clock_type_put(struct snd_kcontrol *kcontrol,
				struct snd_ctl_elem_value *ucontrol)
{
	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
	int rate, ret = 0;

	down(&mgr->mixer_mutex);
	if (mgr->use_clock_type != ucontrol->value.enumerated.item[0]) {
		down(&mgr->setup_mutex);
		mgr->use_clock_type = ucontrol->value.enumerated.item[0];
		if (mgr->use_clock_type)
			pcxhr_get_external_clock(mgr, mgr->use_clock_type, &rate);
		else
			rate = mgr->sample_rate;
		if (rate) {
			pcxhr_set_clock(mgr, rate);
			if (mgr->sample_rate)
				mgr->sample_rate = rate;
		}
		up(&mgr->setup_mutex);
		ret = 1;	/* return 1 even if the set was not done. ok ? */
	}
	up(&mgr->mixer_mutex);
	return ret;
}

static struct snd_kcontrol_new pcxhr_control_clock_type = {
	.iface =	SNDRV_CTL_ELEM_IFACE_MIXER,
	.name =		"Clock Mode",
	.info =		pcxhr_clock_type_info,
	.get =		pcxhr_clock_type_get,
	.put =		pcxhr_clock_type_put,
};

/*
 * clock rate control
 * specific control that scans the sample rates on the external plugs
 */
static int pcxhr_clock_rate_info(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_info *uinfo)
{
	struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 3 + mgr->capture_chips;
	uinfo->value.integer.min = 0;		/* clock not present */
	uinfo->value.integer.max = 192000;	/* max sample rate 192 kHz */
	return 0;
}

static int pcxhr_clock_rate_get(struct snd_kcontrol *kcontrol,