rme9652.c

底层驱动开发

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_adat1_in(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[2] = {"ADAT1", "Internal"};

	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 snd_rme9652_get_adat1_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_adat1_in(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_adat1_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.enumerated.item[0] % 2;
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652_adat1_in(rme9652);
	if (change)
		rme9652_set_adat1_input(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SPDIF_IN(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_spdif_in, \
  .get = snd_rme9652_get_spdif_in, .put = snd_rme9652_put_spdif_in }

static unsigned int rme9652_spdif_in(rme9652_t *rme9652)
{
	return rme9652_decode_spdif_in(rme9652->control_register &
				       RME9652_inp);
}

static int rme9652_set_spdif_input(rme9652_t *rme9652, int in)
{
	int restart = 0;

	rme9652->control_register &= ~RME9652_inp;
	rme9652->control_register |= rme9652_encode_spdif_in(in);

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_spdif_in(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[3] = {"ADAT1", "Coaxial", "Internal"};

	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 snd_rme9652_get_spdif_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_spdif_in(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_spdif_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.enumerated.item[0] % 3;
	spin_lock_irq(&rme9652->lock);
	change = val != rme9652_spdif_in(rme9652);
	if (change)
		rme9652_set_spdif_input(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SPDIF_OUT(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_spdif_out, \
  .get = snd_rme9652_get_spdif_out, .put = snd_rme9652_put_spdif_out }

static int rme9652_spdif_out(rme9652_t *rme9652)
{
	return (rme9652->control_register & RME9652_opt_out) ? 1 : 0;
}

static int rme9652_set_spdif_output(rme9652_t *rme9652, int out)
{
	int restart = 0;

	if (out) {
		rme9652->control_register |= RME9652_opt_out;
	} else {
		rme9652->control_register &= ~RME9652_opt_out;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_spdif_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_rme9652_get_spdif_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.integer.value[0] = rme9652_spdif_out(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_spdif_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_spdif_out(rme9652);
	rme9652_set_spdif_output(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SYNC_MODE(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_sync_mode, \
  .get = snd_rme9652_get_sync_mode, .put = snd_rme9652_put_sync_mode }

static int rme9652_sync_mode(rme9652_t *rme9652)
{
	if (rme9652->control_register & RME9652_wsel) {
		return 2;
	} else if (rme9652->control_register & RME9652_Master) {
		return 1;
	} else {
		return 0;
	}
}

static int rme9652_set_sync_mode(rme9652_t *rme9652, int mode)
{
	int restart = 0;

	switch (mode) {
	case 0:
		rme9652->control_register &=
		    ~(RME9652_Master | RME9652_wsel);
		break;
	case 1:
		rme9652->control_register =
		    (rme9652->control_register & ~RME9652_wsel) | RME9652_Master;
		break;
	case 2:
		rme9652->control_register |=
		    (RME9652_Master | RME9652_wsel);
		break;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_sync_mode(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[3] = {"AutoSync", "Master", "Word Clock"};

	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 snd_rme9652_get_sync_mode(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_sync_mode(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_sync_mode(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	
	val = ucontrol->value.enumerated.item[0] % 3;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_sync_mode(rme9652);
	rme9652_set_sync_mode(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

#define RME9652_SYNC_PREF(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_sync_pref, \
  .get = snd_rme9652_get_sync_pref, .put = snd_rme9652_put_sync_pref }

static int rme9652_sync_pref(rme9652_t *rme9652)
{
	switch (rme9652->control_register & RME9652_SyncPref_Mask) {
	case RME9652_SyncPref_ADAT1:
		return RME9652_SYNC_FROM_ADAT1;
	case RME9652_SyncPref_ADAT2:
		return RME9652_SYNC_FROM_ADAT2;
	case RME9652_SyncPref_ADAT3:
		return RME9652_SYNC_FROM_ADAT3;
	case RME9652_SyncPref_SPDIF:
		return RME9652_SYNC_FROM_SPDIF;
	}
	/* Not reachable */
	return 0;
}

static int rme9652_set_sync_pref(rme9652_t *rme9652, int pref)
{
	int restart;

	rme9652->control_register &= ~RME9652_SyncPref_Mask;
	switch (pref) {
	case RME9652_SYNC_FROM_ADAT1:
		rme9652->control_register |= RME9652_SyncPref_ADAT1;
		break;
	case RME9652_SYNC_FROM_ADAT2:
		rme9652->control_register |= RME9652_SyncPref_ADAT2;
		break;
	case RME9652_SYNC_FROM_ADAT3:
		rme9652->control_register |= RME9652_SyncPref_ADAT3;
		break;
	case RME9652_SYNC_FROM_SPDIF:
		rme9652->control_register |= RME9652_SyncPref_SPDIF;
		break;
	}

	if ((restart = rme9652->running)) {
		rme9652_stop(rme9652);
	}

	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);

	if (restart) {
		rme9652_start(rme9652);
	}

	return 0;
}

static int snd_rme9652_info_sync_pref(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	static char *texts[4] = {"IEC958 In", "ADAT1 In", "ADAT2 In", "ADAT3 In"};
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 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_rme9652_get_sync_pref(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	
	spin_lock_irq(&rme9652->lock);
	ucontrol->value.enumerated.item[0] = rme9652_sync_pref(rme9652);
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_sync_pref(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change, max;
	unsigned int val;
	
	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;
	max = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
	val = ucontrol->value.enumerated.item[0] % max;
	spin_lock_irq(&rme9652->lock);
	change = (int)val != rme9652_sync_pref(rme9652);
	rme9652_set_sync_pref(rme9652, val);
	spin_unlock_irq(&rme9652->lock);
	return change;
}

static int snd_rme9652_info_thru(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = rme9652->ss_channels;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_rme9652_get_thru(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	unsigned int k;
	u32 thru_bits = rme9652->thru_bits;

	for (k = 0; k < rme9652->ss_channels; ++k) {
		ucontrol->value.integer.value[k] = !!(thru_bits & (1 << k));
	}
	return 0;
}

static int snd_rme9652_put_thru(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int chn;
	u32 thru_bits = 0;

	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;

	for (chn = 0; chn < rme9652->ss_channels; ++chn) {
		if (ucontrol->value.integer.value[chn])
			thru_bits |= 1 << chn;
	}
	
	spin_lock_irq(&rme9652->lock);
	change = thru_bits ^ rme9652->thru_bits;
	if (change) {
		for (chn = 0; chn < rme9652->ss_channels; ++chn) {
			if (!(change & (1 << chn)))
				continue;
			rme9652_set_thru(rme9652,chn,thru_bits&(1<<chn));
		}
	}
	spin_unlock_irq(&rme9652->lock);
	return !!change;
}

#define RME9652_PASSTHRU(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
  .info = snd_rme9652_info_passthru, \
  .put = snd_rme9652_put_passthru, \
  .get = snd_rme9652_get_passthru }

static int snd_rme9652_info_passthru(snd_kcontrol_t * kcontrol, snd_ctl_elem_info_t * uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int snd_rme9652_get_passthru(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);

	spin_lock_irq(&rme9652->lock);
	ucontrol->value.integer.value[0] = rme9652->passthru;
	spin_unlock_irq(&rme9652->lock);
	return 0;
}

static int snd_rme9652_put_passthru(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	rme9652_t *rme9652 = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;
	int err = 0;

	if (!snd_rme9652_use_is_exclusive(rme9652))
		return -EBUSY;

	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&rme9652->lock);
	change = (ucontrol->value.integer.value[0] != rme9652->passthru);
	if (change)
		err = rme9652_set_passthru(rme9652, val);