hdspm.c

底层驱动开发

	strcpy(uinfo->value.enumerated.name,
	       texts[uinfo->value.enumerated.item]);

	return 0;
}

static int snd_hdspm_get_clock_source(snd_kcontrol_t * kcontrol,
				      snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = hdspm_clock_source(hdspm);
	return 0;
}

static int snd_hdspm_put_clock_source(snd_kcontrol_t * kcontrol,
				      snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change;
	int val;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;
	val = ucontrol->value.enumerated.item[0];
	if (val < 0)
		val = 0;
	if (val > 6)
		val = 6;
	spin_lock_irq(&hdspm->lock);
	if (val != hdspm_clock_source(hdspm))
		change = (hdspm_set_clock_source(hdspm, val) == 0) ? 1 : 0;
	else
		change = 0;
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_PREF_SYNC_REF(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_pref_sync_ref, \
  .get = snd_hdspm_get_pref_sync_ref, \
  .put = snd_hdspm_put_pref_sync_ref \
}

static int hdspm_pref_sync_ref(hdspm_t * hdspm)
{
	/* Notice that this looks at the requested sync source,
	   not the one actually in use.
	 */
	switch (hdspm->control_register & HDSPM_SyncRefMask) {
	case HDSPM_SyncRef_Word:
		return HDSPM_SYNC_FROM_WORD;
	case HDSPM_SyncRef_MADI:
		return HDSPM_SYNC_FROM_MADI;
	}

	return HDSPM_SYNC_FROM_WORD;
}

static int hdspm_set_pref_sync_ref(hdspm_t * hdspm, int pref)
{
	hdspm->control_register &= ~HDSPM_SyncRefMask;

	switch (pref) {
	case HDSPM_SYNC_FROM_MADI:
		hdspm->control_register |= HDSPM_SyncRef_MADI;
		break;
	case HDSPM_SYNC_FROM_WORD:
		hdspm->control_register |= HDSPM_SyncRef_Word;
		break;
	default:
		return -1;
	}
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);
	return 0;
}

static int snd_hdspm_info_pref_sync_ref(snd_kcontrol_t * kcontrol,
					snd_ctl_elem_info_t * uinfo)
{
	static char *texts[] = { "Word", "MADI" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;

	uinfo->value.enumerated.items = 2;

	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_hdspm_get_pref_sync_ref(snd_kcontrol_t * kcontrol,
				       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = hdspm_pref_sync_ref(hdspm);
	return 0;
}

static int snd_hdspm_put_pref_sync_ref(snd_kcontrol_t * kcontrol,
				       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change, max;
	unsigned int val;

	max = 2;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;

	val = ucontrol->value.enumerated.item[0] % max;

	spin_lock_irq(&hdspm->lock);
	change = (int) val != hdspm_pref_sync_ref(hdspm);
	hdspm_set_pref_sync_ref(hdspm, val);
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_AUTOSYNC_REF(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
  .info = snd_hdspm_info_autosync_ref, \
  .get = snd_hdspm_get_autosync_ref, \
}

static int hdspm_autosync_ref(hdspm_t * hdspm)
{
	/* This looks at the autosync selected sync reference */
	unsigned int status2 = hdspm_read(hdspm, HDSPM_statusRegister2);

	switch (status2 & HDSPM_SelSyncRefMask) {

	case HDSPM_SelSyncRef_WORD:
		return HDSPM_AUTOSYNC_FROM_WORD;

	case HDSPM_SelSyncRef_MADI:
		return HDSPM_AUTOSYNC_FROM_MADI;

	case HDSPM_SelSyncRef_NVALID:
		return HDSPM_AUTOSYNC_FROM_NONE;

	default:
		return 0;
	}

	return 0;
}

static int snd_hdspm_info_autosync_ref(snd_kcontrol_t * kcontrol,
				       snd_ctl_elem_info_t * uinfo)
{
	static char *texts[] = { "WordClock", "MADI", "None" };

	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_hdspm_get_autosync_ref(snd_kcontrol_t * kcontrol,
				      snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = hdspm_pref_sync_ref(hdspm);
	return 0;
}

#define HDSPM_LINE_OUT(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_line_out, \
  .get = snd_hdspm_get_line_out, \
  .put = snd_hdspm_put_line_out \
}

static int hdspm_line_out(hdspm_t * hdspm)
{
	return (hdspm->control_register & HDSPM_LineOut) ? 1 : 0;
}


static int hdspm_set_line_output(hdspm_t * hdspm, int out)
{
	if (out)
		hdspm->control_register |= HDSPM_LineOut;
	else
		hdspm->control_register &= ~HDSPM_LineOut;
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);

	return 0;
}

static int snd_hdspm_info_line_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_hdspm_get_line_out(snd_kcontrol_t * kcontrol,
				  snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

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

static int snd_hdspm_put_line_out(snd_kcontrol_t * kcontrol,
				  snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&hdspm->lock);
	change = (int) val != hdspm_line_out(hdspm);
	hdspm_set_line_output(hdspm, val);
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_TX_64(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_tx_64, \
  .get = snd_hdspm_get_tx_64, \
  .put = snd_hdspm_put_tx_64 \
}

static int hdspm_tx_64(hdspm_t * hdspm)
{
	return (hdspm->control_register & HDSPM_TX_64ch) ? 1 : 0;
}

static int hdspm_set_tx_64(hdspm_t * hdspm, int out)
{
	if (out)
		hdspm->control_register |= HDSPM_TX_64ch;
	else
		hdspm->control_register &= ~HDSPM_TX_64ch;
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);

	return 0;
}

static int snd_hdspm_info_tx_64(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_hdspm_get_tx_64(snd_kcontrol_t * kcontrol,
			       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

	spin_lock_irq(&hdspm->lock);
	ucontrol->value.integer.value[0] = hdspm_tx_64(hdspm);
	spin_unlock_irq(&hdspm->lock);
	return 0;
}

static int snd_hdspm_put_tx_64(snd_kcontrol_t * kcontrol,
			       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&hdspm->lock);
	change = (int) val != hdspm_tx_64(hdspm);
	hdspm_set_tx_64(hdspm, val);
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_C_TMS(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_c_tms, \
  .get = snd_hdspm_get_c_tms, \
  .put = snd_hdspm_put_c_tms \
}

static int hdspm_c_tms(hdspm_t * hdspm)
{
	return (hdspm->control_register & HDSPM_clr_tms) ? 1 : 0;
}

static int hdspm_set_c_tms(hdspm_t * hdspm, int out)
{
	if (out)
		hdspm->control_register |= HDSPM_clr_tms;
	else
		hdspm->control_register &= ~HDSPM_clr_tms;
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);

	return 0;
}

static int snd_hdspm_info_c_tms(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_hdspm_get_c_tms(snd_kcontrol_t * kcontrol,
			       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

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

static int snd_hdspm_put_c_tms(snd_kcontrol_t * kcontrol,
			       snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&hdspm->lock);
	change = (int) val != hdspm_c_tms(hdspm);
	hdspm_set_c_tms(hdspm, val);
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_SAFE_MODE(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_safe_mode, \
  .get = snd_hdspm_get_safe_mode, \
  .put = snd_hdspm_put_safe_mode \
}

static int hdspm_safe_mode(hdspm_t * hdspm)
{
	return (hdspm->control_register & HDSPM_AutoInp) ? 1 : 0;
}

static int hdspm_set_safe_mode(hdspm_t * hdspm, int out)
{
	if (out)
		hdspm->control_register |= HDSPM_AutoInp;
	else
		hdspm->control_register &= ~HDSPM_AutoInp;
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);

	return 0;
}

static int snd_hdspm_info_safe_mode(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_hdspm_get_safe_mode(snd_kcontrol_t * kcontrol,
				   snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);

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

static int snd_hdspm_put_safe_mode(snd_kcontrol_t * kcontrol,
				   snd_ctl_elem_value_t * ucontrol)
{
	hdspm_t *hdspm = snd_kcontrol_chip(kcontrol);
	int change;
	unsigned int val;

	if (!snd_hdspm_use_is_exclusive(hdspm))
		return -EBUSY;
	val = ucontrol->value.integer.value[0] & 1;
	spin_lock_irq(&hdspm->lock);
	change = (int) val != hdspm_safe_mode(hdspm);
	hdspm_set_safe_mode(hdspm, val);
	spin_unlock_irq(&hdspm->lock);
	return change;
}

#define HDSPM_INPUT_SELECT(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
  .name = xname, \
  .index = xindex, \
  .info = snd_hdspm_info_input_select, \
  .get = snd_hdspm_get_input_select, \
  .put = snd_hdspm_put_input_select \
}

static int hdspm_input_select(hdspm_t * hdspm)
{
	return (hdspm->control_register & HDSPM_InputSelect0) ? 1 : 0;
}

static int hdspm_set_input_select(hdspm_t * hdspm, int out)
{
	if (out)
		hdspm->control_register |= HDSPM_InputSelect0;
	else
		hdspm->control_register &= ~HDSPM_InputSelect0;
	hdspm_write(hdspm, HDSPM_controlRegister, hdspm->control_register);

	return 0;
}

static int snd_hdspm_info_input_select(snd_kcontrol_t * kcontrol,
				       snd_ctl_elem_info_t * uinfo)
{
	static char *texts[] = { "optical", "coaxial" };