tumbler.c

linux 内核源代码

		vol = info->max - 1;
	vol = info->table[vol];
	for (i = 0; i < info->bytes; i++)
		block[i] = (vol >> ((info->bytes - i - 1) * 8)) & 0xff;
	if (i2c_smbus_write_i2c_block_data(mix->i2c.client, info->reg,
					   info->bytes, block) < 0) {
		snd_printk("failed to set mono volume %d\n", info->index);
		return -EINVAL;
	}
	return 0;
}

static int tumbler_info_mono(struct snd_kcontrol *kcontrol,
			     struct snd_ctl_elem_info *uinfo)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;

	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = info->max - 1;
	return 0;
}

static int tumbler_get_mono(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->mono_vol[info->index];
	return 0;
}

static int tumbler_put_mono(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_value *ucontrol)
{
	struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->mono_vol[info->index] != ucontrol->value.integer.value[0];
	if (change) {
		mix->mono_vol[info->index] = ucontrol->value.integer.value[0];
		tumbler_set_mono_volume(mix, info);
	}
	return change;
}

/* TAS3001c mono volumes */
static struct tumbler_mono_vol tumbler_pcm_vol_info = {
	.index = VOL_IDX_PCM_MONO,
	.reg = TAS_REG_PCM,
	.bytes = 3,
	.max = ARRAY_SIZE(mixer_volume_table),
	.table = mixer_volume_table,
};

static struct tumbler_mono_vol tumbler_bass_vol_info = {
	.index = VOL_IDX_BASS,
	.reg = TAS_REG_BASS,
	.bytes = 1,
	.max = ARRAY_SIZE(bass_volume_table),
	.table = bass_volume_table,
};

static struct tumbler_mono_vol tumbler_treble_vol_info = {
	.index = VOL_IDX_TREBLE,
	.reg = TAS_REG_TREBLE,
	.bytes = 1,
	.max = ARRAY_SIZE(treble_volume_table),
	.table = treble_volume_table,
};

/* TAS3004 mono volumes */
static struct tumbler_mono_vol snapper_bass_vol_info = {
	.index = VOL_IDX_BASS,
	.reg = TAS_REG_BASS,
	.bytes = 1,
	.max = ARRAY_SIZE(snapper_bass_volume_table),
	.table = snapper_bass_volume_table,
};

static struct tumbler_mono_vol snapper_treble_vol_info = {
	.index = VOL_IDX_TREBLE,
	.reg = TAS_REG_TREBLE,
	.bytes = 1,
	.max = ARRAY_SIZE(snapper_treble_volume_table),
	.table = snapper_treble_volume_table,
};


#define DEFINE_MONO(xname,type) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = tumbler_info_mono, \
	.get = tumbler_get_mono, \
	.put = tumbler_put_mono, \
	.private_value = (unsigned long)(&tumbler_##type##_vol_info), \
}

#define DEFINE_SNAPPER_MONO(xname,type) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = tumbler_info_mono, \
	.get = tumbler_get_mono, \
	.put = tumbler_put_mono, \
	.private_value = (unsigned long)(&snapper_##type##_vol_info), \
}


/*
 * snapper mixer volumes
 */

static int snapper_set_mix_vol1(struct pmac_tumbler *mix, int idx, int ch, int reg)
{
	int i, j, vol;
	unsigned char block[9];

	vol = mix->mix_vol[idx][ch];
	if (vol >= ARRAY_SIZE(mixer_volume_table)) {
		vol = ARRAY_SIZE(mixer_volume_table) - 1;
		mix->mix_vol[idx][ch] = vol;
	}

	for (i = 0; i < 3; i++) {
		vol = mix->mix_vol[i][ch];
		vol = mixer_volume_table[vol];
		for (j = 0; j < 3; j++)
			block[i * 3 + j] = (vol >> ((2 - j) * 8)) & 0xff;
	}
	if (i2c_smbus_write_i2c_block_data(mix->i2c.client, reg,
					   9, block) < 0) {
		snd_printk("failed to set mono volume %d\n", reg);
		return -EINVAL;
	}
	return 0;
}

static int snapper_set_mix_vol(struct pmac_tumbler *mix, int idx)
{
	if (! mix->i2c.client)
		return -ENODEV;
	if (snapper_set_mix_vol1(mix, idx, 0, TAS_REG_LMIX) < 0 ||
	    snapper_set_mix_vol1(mix, idx, 1, TAS_REG_RMIX) < 0)
		return -EINVAL;
	return 0;
}

static int snapper_info_mix(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 = ARRAY_SIZE(mixer_volume_table) - 1;
	return 0;
}

static int snapper_get_mix(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	int idx = (int)kcontrol->private_value;
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->mix_vol[idx][0];
	ucontrol->value.integer.value[1] = mix->mix_vol[idx][1];
	return 0;
}

static int snapper_put_mix(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	int idx = (int)kcontrol->private_value;
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->mix_vol[idx][0] != ucontrol->value.integer.value[0] ||
		mix->mix_vol[idx][1] != ucontrol->value.integer.value[1];
	if (change) {
		mix->mix_vol[idx][0] = ucontrol->value.integer.value[0];
		mix->mix_vol[idx][1] = ucontrol->value.integer.value[1];
		snapper_set_mix_vol(mix, idx);
	}
	return change;
}


/*
 * mute switches. FIXME: Turn that into software mute when both outputs are muted
 * to avoid codec reset on ibook M7
 */

enum { TUMBLER_MUTE_HP, TUMBLER_MUTE_AMP, TUMBLER_MUTE_LINE };

static int tumbler_get_mute_switch(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	struct pmac_gpio *gp;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	switch(kcontrol->private_value) {
	case TUMBLER_MUTE_HP:
		gp = &mix->hp_mute;	break;
	case TUMBLER_MUTE_AMP:
		gp = &mix->amp_mute;	break;
	case TUMBLER_MUTE_LINE:
		gp = &mix->line_mute;	break;
	default:
		gp = NULL;
	}
	if (gp == NULL)
		return -EINVAL;
	ucontrol->value.integer.value[0] = !check_audio_gpio(gp);
	return 0;
}

static int tumbler_put_mute_switch(struct snd_kcontrol *kcontrol,
				   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix;
	struct pmac_gpio *gp;
	int val;
#ifdef PMAC_SUPPORT_AUTOMUTE
	if (chip->update_automute && chip->auto_mute)
		return 0; /* don't touch in the auto-mute mode */
#endif	
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	switch(kcontrol->private_value) {
	case TUMBLER_MUTE_HP:
		gp = &mix->hp_mute;	break;
	case TUMBLER_MUTE_AMP:
		gp = &mix->amp_mute;	break;
	case TUMBLER_MUTE_LINE:
		gp = &mix->line_mute;	break;
	default:
		gp = NULL;
	}
	if (gp == NULL)
		return -EINVAL;
	val = ! check_audio_gpio(gp);
	if (val != ucontrol->value.integer.value[0]) {
		write_audio_gpio(gp, ! ucontrol->value.integer.value[0]);
		return 1;
	}
	return 0;
}

static int snapper_set_capture_source(struct pmac_tumbler *mix)
{
	if (! mix->i2c.client)
		return -ENODEV;
	if (mix->capture_source)
		mix->acs = mix->acs |= 2;
	else
		mix->acs &= ~2;
	return i2c_smbus_write_byte_data(mix->i2c.client, TAS_REG_ACS, mix->acs);
}

static int snapper_info_capture_source(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = {
		"Line", "Mic"
	};
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snapper_get_capture_source(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix = chip->mixer_data;

	snd_assert(mix, return -ENODEV);
	ucontrol->value.integer.value[0] = mix->capture_source;
	return 0;
}

static int snapper_put_capture_source(struct snd_kcontrol *kcontrol,
				      struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_tumbler *mix = chip->mixer_data;
	int change;

	snd_assert(mix, return -ENODEV);
	change = ucontrol->value.integer.value[0] != mix->capture_source;
	if (change) {
		mix->capture_source = !!ucontrol->value.integer.value[0];
		snapper_set_capture_source(mix);
	}
	return change;
}

#define DEFINE_SNAPPER_MIX(xname,idx,ofs) { \
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,\
	.name = xname, \
	.info = snapper_info_mix, \
	.get = snapper_get_mix, \
	.put = snapper_put_mix, \
	.index = idx,\
	.private_value = ofs, \
}


/*
 */
static struct snd_kcontrol_new tumbler_mixers[] __initdata = {
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Volume",
	  .info = tumbler_info_master_volume,
	  .get = tumbler_get_master_volume,
	  .put = tumbler_put_master_volume
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Switch",
	  .info = snd_pmac_boolean_stereo_info,
	  .get = tumbler_get_master_switch,
	  .put = tumbler_put_master_switch
	},
	DEFINE_MONO("Tone Control - Bass", bass),
	DEFINE_MONO("Tone Control - Treble", treble),
	DEFINE_MONO("PCM Playback Volume", pcm),
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "DRC Range",
	  .info = tumbler_info_drc_value,
	  .get = tumbler_get_drc_value,
	  .put = tumbler_put_drc_value
	},
};

static struct snd_kcontrol_new snapper_mixers[] __initdata = {
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Volume",
	  .info = tumbler_info_master_volume,
	  .get = tumbler_get_master_volume,
	  .put = tumbler_put_master_volume
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Switch",
	  .info = snd_pmac_boolean_stereo_info,
	  .get = tumbler_get_master_switch,
	  .put = tumbler_put_master_switch
	},
	DEFINE_SNAPPER_MIX("PCM Playback Volume", 0, VOL_IDX_PCM),
	DEFINE_SNAPPER_MIX("PCM Playback Volume", 1, VOL_IDX_PCM2),
	DEFINE_SNAPPER_MIX("Monitor Mix Volume", 0, VOL_IDX_ADC),
	DEFINE_SNAPPER_MONO("Tone Control - Bass", bass),
	DEFINE_SNAPPER_MONO("Tone Control - Treble", treble),
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "DRC Range",
	  .info = tumbler_info_drc_value,
	  .get = tumbler_get_drc_value,
	  .put = tumbler_put_drc_value
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Input Source", /* FIXME: "Capture Source" doesn't work properly */
	  .info = snapper_info_capture_source,
	  .get = snapper_get_capture_source,
	  .put = snapper_put_capture_source
	},
};

static struct snd_kcontrol_new tumbler_hp_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Headphone Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_HP,
};
static struct snd_kcontrol_new tumbler_speaker_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "PC Speaker Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_AMP,
};
static struct snd_kcontrol_new tumbler_lineout_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Line Out Playback Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_mute_switch,
	.put = tumbler_put_mute_switch,
	.private_value = TUMBLER_MUTE_LINE,
};
static struct snd_kcontrol_new tumbler_drc_sw __initdata = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DRC Switch",
	.info = snd_pmac_boolean_mono_info,
	.get = tumbler_get_drc_switch,
	.put = tumbler_put_drc_switch
};


#ifdef PMAC_SUPPORT_AUTOMUTE
/*
 * auto-mute stuffs
 */
static int tumbler_detect_headphone(struct snd_pmac *chip)
{
	struct pmac_tumbler *mix = chip->mixer_data;
	int detect = 0;

	if (mix->hp_detect.addr)
		detect |= read_audio_gpio(&mix->hp_detect);
	return detect;
}

static int tumbler_detect_lineout(struct snd_pmac *chip)
{
	struct pmac_tumbler *mix = chip->mixer_data;
	int detect = 0;

	if (mix->line_detect.addr)
		detect |= read_audio_gpio(&mix->line_detect);
	return detect;
}

static void check_mute(struct snd_pmac *chip, struct pmac_gpio *gp, int val, int do_notify,
		       struct snd_kcontrol *sw)
{
	if (check_audio_gpio(gp) != val) {
		write_audio_gpio(gp, val);
		if (do_notify)
			snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
				       &sw->id);
	}
}

static struct work_struct device_change;
static struct snd_pmac *device_change_chip;

static void device_change_handler(struct work_struct *work)
{
	struct snd_pmac *chip = device_change_chip;
	struct pmac_tumbler *mix;
	int headphone, lineout;

	if (!chip)
		return;

	mix = chip->mixer_data;
	snd_assert(mix, return);

	headphone = tumbler_detect_headphone(chip);
	lineout = tumbler_detect_lineout(chip);

	DBG("headphone: %d, lineout: %d\n", headphone, lineout);

	if (headphone || lineout) {
		/* unmute headphone/lineout & mute speaker */
		if (headphone)
			check_mute(chip, &mix->hp_mute, 0, mix->auto_mute_notify,
				   chip->master_sw_ctl);
		if (lineout && mix->line_mute.addr != 0)
			check_mute(chip, &mix->line_mute, 0, mix->auto_mute_notify,
				   chip->lineout_sw_ctl);
		if (mix->anded_reset)
			msleep(10);
		check_mute(chip, &mix->amp_mute, 1, mix->auto_mute_notify,
			   chip->speaker_sw_ctl);
	} else {
		/* unmute speaker, mute others */
		check_mute(chip, &mix->amp_mute, 0, mix->auto_mute_notify,
			   chip->speaker_sw_ctl);
		if (mix->anded_reset)