cs46xx_lib.c

来自「优龙2410linux2.6.8内核源代码」· C语言 代码 · 共 2,248 行 · 第 1/5 页

	pcm->private_data = chip;
	pcm->private_free = snd_cs46xx_pcm_iec958_free;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs46xx_playback_iec958_ops);

	/* global setup */
	pcm->info_flags = 0;
	strcpy(pcm->name, "CS46xx - IEC958");
	chip->pcm_rear = pcm;

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
					      snd_dma_pci_data(chip->pci), 64*1024, 256*1024);

	if (rpcm)
		*rpcm = pcm;

	return 0;
}
#endif

/*
 *  Mixer routines
 */
static void snd_cs46xx_mixer_free_ac97_bus(ac97_bus_t *bus)
{
	cs46xx_t *chip = snd_magic_cast(cs46xx_t, bus->private_data, return);

	chip->ac97_bus = NULL;
}

static void snd_cs46xx_mixer_free_ac97(ac97_t *ac97)
{
	cs46xx_t *chip = snd_magic_cast(cs46xx_t, ac97->private_data, return);

	snd_assert ((ac97 == chip->ac97[CS46XX_PRIMARY_CODEC_INDEX]) ||
		    (ac97 == chip->ac97[CS46XX_SECONDARY_CODEC_INDEX]),
		    return);

	if (ac97 == chip->ac97[CS46XX_PRIMARY_CODEC_INDEX]) {
		chip->ac97[CS46XX_PRIMARY_CODEC_INDEX] = NULL;
		chip->eapd_switch = NULL;
	}
	else
		chip->ac97[CS46XX_SECONDARY_CODEC_INDEX] = NULL;
}

static int snd_cs46xx_vol_info(snd_kcontrol_t *kcontrol, 
			       snd_ctl_elem_info_t *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 0x7fff;
	return 0;
}

static int snd_cs46xx_vol_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value;
	unsigned int val = snd_cs46xx_peek(chip, reg);
	ucontrol->value.integer.value[0] = 0xffff - (val >> 16);
	ucontrol->value.integer.value[1] = 0xffff - (val & 0xffff);
	return 0;
}

static int snd_cs46xx_vol_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value;
	unsigned int val = ((0xffff - ucontrol->value.integer.value[0]) << 16 | 
			    (0xffff - ucontrol->value.integer.value[1]));
	unsigned int old = snd_cs46xx_peek(chip, reg);
	int change = (old != val);

	if (change) {
		snd_cs46xx_poke(chip, reg, val);
	}

	return change;
}

#ifdef CONFIG_SND_CS46XX_NEW_DSP

static int snd_cs46xx_vol_dac_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = chip->dsp_spos_instance->dac_volume_left;
	ucontrol->value.integer.value[1] = chip->dsp_spos_instance->dac_volume_right;

	return 0;
}

static int snd_cs46xx_vol_dac_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int change = 0;

	if (chip->dsp_spos_instance->dac_volume_right != ucontrol->value.integer.value[0] ||
	    chip->dsp_spos_instance->dac_volume_left != ucontrol->value.integer.value[1]) {
		cs46xx_dsp_set_dac_volume(chip,
					  ucontrol->value.integer.value[0],
					  ucontrol->value.integer.value[1]);
		change = 1;
	}

	return change;
}

#if 0
static int snd_cs46xx_vol_iec958_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);

	ucontrol->value.integer.value[0] = chip->dsp_spos_instance->spdif_input_volume_left;
	ucontrol->value.integer.value[1] = chip->dsp_spos_instance->spdif_input_volume_right;
	return 0;
}

static int snd_cs46xx_vol_iec958_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int change = 0;

	if (chip->dsp_spos_instance->spdif_input_volume_left  != ucontrol->value.integer.value[0] ||
	    chip->dsp_spos_instance->spdif_input_volume_right!= ucontrol->value.integer.value[1]) {
		cs46xx_dsp_set_iec958_volume (chip,
					      ucontrol->value.integer.value[0],
					      ucontrol->value.integer.value[1]);
		change = 1;
	}

	return change;
}
#endif

static int snd_mixer_boolean_info(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_cs46xx_iec958_get(snd_kcontrol_t *kcontrol, 
                                 snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_value;

	if (reg == CS46XX_MIXER_SPDIF_OUTPUT_ELEMENT)
		ucontrol->value.integer.value[0] = (chip->dsp_spos_instance->spdif_status_out & DSP_SPDIF_STATUS_OUTPUT_ENABLED);
	else
		ucontrol->value.integer.value[0] = chip->dsp_spos_instance->spdif_status_in;

	return 0;
}

static int snd_cs46xx_iec958_put(snd_kcontrol_t *kcontrol, 
                                  snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int change, res;

	switch (kcontrol->private_value) {
	case CS46XX_MIXER_SPDIF_OUTPUT_ELEMENT:
		down (&chip->spos_mutex);
		change = (chip->dsp_spos_instance->spdif_status_out & DSP_SPDIF_STATUS_OUTPUT_ENABLED);
		if (ucontrol->value.integer.value[0] && !change) 
			cs46xx_dsp_enable_spdif_out(chip);
		else if (change && !ucontrol->value.integer.value[0])
			cs46xx_dsp_disable_spdif_out(chip);

		res = (change != (chip->dsp_spos_instance->spdif_status_out & DSP_SPDIF_STATUS_OUTPUT_ENABLED));
		up (&chip->spos_mutex);
		break;
	case CS46XX_MIXER_SPDIF_INPUT_ELEMENT:
		change = chip->dsp_spos_instance->spdif_status_in;
		if (ucontrol->value.integer.value[0] && !change) {
			cs46xx_dsp_enable_spdif_in(chip);
			/* restore volume */
		}
		else if (change && !ucontrol->value.integer.value[0])
			cs46xx_dsp_disable_spdif_in(chip);
		
		res = (change != chip->dsp_spos_instance->spdif_status_in);
		break;
	default:
		res = -EINVAL;
		snd_assert(0, (void)0);
	}

	return res;
}

static int snd_cs46xx_adc_capture_get(snd_kcontrol_t *kcontrol, 
                                      snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;

	if (ins->adc_input != NULL) 
		ucontrol->value.integer.value[0] = 1;
	else 
		ucontrol->value.integer.value[0] = 0;
	
	return 0;
}

static int snd_cs46xx_adc_capture_put(snd_kcontrol_t *kcontrol, 
                                      snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;
	int change = 0;

	if (ucontrol->value.integer.value[0] && !ins->adc_input) {
		cs46xx_dsp_enable_adc_capture(chip);
		change = 1;
	} else  if (!ucontrol->value.integer.value[0] && ins->adc_input) {
		cs46xx_dsp_disable_adc_capture(chip);
		change = 1;
	}
	return change;
}

static int snd_cs46xx_pcm_capture_get(snd_kcontrol_t *kcontrol, 
                                      snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;

	if (ins->pcm_input != NULL) 
		ucontrol->value.integer.value[0] = 1;
	else 
		ucontrol->value.integer.value[0] = 0;

	return 0;
}


static int snd_cs46xx_pcm_capture_put(snd_kcontrol_t *kcontrol, 
                                      snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;
	int change = 0;

	if (ucontrol->value.integer.value[0] && !ins->pcm_input) {
		cs46xx_dsp_enable_pcm_capture(chip);
		change = 1;
	} else  if (!ucontrol->value.integer.value[0] && ins->pcm_input) {
		cs46xx_dsp_disable_pcm_capture(chip);
		change = 1;
	}

	return change;
}

static int snd_herc_spdif_select_get(snd_kcontrol_t *kcontrol, 
                                     snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);

	int val1 = snd_cs46xx_peekBA0(chip, BA0_EGPIODR);

	if (val1 & EGPIODR_GPOE0)
		ucontrol->value.integer.value[0] = 1;
	else
		ucontrol->value.integer.value[0] = 0;

	return 0;
}

/*
 *	Game Theatre XP card - EGPIO[0] is used to select SPDIF input optical or coaxial.
 */ 
static int snd_herc_spdif_select_put(snd_kcontrol_t *kcontrol, 
                                       snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int val1 = snd_cs46xx_peekBA0(chip, BA0_EGPIODR);
	int val2 = snd_cs46xx_peekBA0(chip, BA0_EGPIOPTR);

	if (ucontrol->value.integer.value[0]) {
		/* optical is default */
		snd_cs46xx_pokeBA0(chip, BA0_EGPIODR, 
				   EGPIODR_GPOE0 | val1);  /* enable EGPIO0 output */
		snd_cs46xx_pokeBA0(chip, BA0_EGPIOPTR, 
				   EGPIOPTR_GPPT0 | val2); /* open-drain on output */
	} else {
		/* coaxial */
		snd_cs46xx_pokeBA0(chip, BA0_EGPIODR,  val1 & ~EGPIODR_GPOE0); /* disable */
		snd_cs46xx_pokeBA0(chip, BA0_EGPIOPTR, val2 & ~EGPIOPTR_GPPT0); /* disable */
	}

	/* checking diff from the EGPIO direction register 
	   should be enough */
	return (val1 != (int)snd_cs46xx_peekBA0(chip, BA0_EGPIODR));
}


static int snd_cs46xx_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
	uinfo->count = 1;
	return 0;
}

static int snd_cs46xx_spdif_default_get(snd_kcontrol_t * kcontrol,
					snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;

	down (&chip->spos_mutex);
	ucontrol->value.iec958.status[0] = _wrap_all_bits((ins->spdif_csuv_default >> 24) & 0xff);
	ucontrol->value.iec958.status[1] = _wrap_all_bits((ins->spdif_csuv_default >> 16) & 0xff);
	ucontrol->value.iec958.status[2] = 0;
	ucontrol->value.iec958.status[3] = _wrap_all_bits((ins->spdif_csuv_default) & 0xff);
	up (&chip->spos_mutex);

	return 0;
}

static int snd_cs46xx_spdif_default_put(snd_kcontrol_t * kcontrol,
					snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t * chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;
	unsigned int val;
	int change;

	down (&chip->spos_mutex);
	val = ((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[0]) << 24) |
		((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[2]) << 16) |
		((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[3]))  |
		/* left and right validity bit */
		(1 << 13) | (1 << 12);


	change = (unsigned int)ins->spdif_csuv_default != val;
	ins->spdif_csuv_default = val;

	if ( !(ins->spdif_status_out & DSP_SPDIF_STATUS_PLAYBACK_OPEN) )
		cs46xx_poke_via_dsp (chip,SP_SPDOUT_CSUV,val);

	up (&chip->spos_mutex);

	return change;
}

static int snd_cs46xx_spdif_mask_get(snd_kcontrol_t * kcontrol,
				     snd_ctl_elem_value_t * ucontrol)
{
	ucontrol->value.iec958.status[0] = 0xff;
	ucontrol->value.iec958.status[1] = 0xff;
	ucontrol->value.iec958.status[2] = 0x00;
	ucontrol->value.iec958.status[3] = 0xff;
	return 0;
}

static int snd_cs46xx_spdif_stream_get(snd_kcontrol_t * kcontrol,
                                         snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;

	down (&chip->spos_mutex);
	ucontrol->value.iec958.status[0] = _wrap_all_bits((ins->spdif_csuv_stream >> 24) & 0xff);
	ucontrol->value.iec958.status[1] = _wrap_all_bits((ins->spdif_csuv_stream >> 16) & 0xff);
	ucontrol->value.iec958.status[2] = 0;
	ucontrol->value.iec958.status[3] = _wrap_all_bits((ins->spdif_csuv_stream) & 0xff);
	up (&chip->spos_mutex);

	return 0;
}

static int snd_cs46xx_spdif_stream_put(snd_kcontrol_t * kcontrol,
                                        snd_ctl_elem_value_t * ucontrol)
{
	cs46xx_t * chip = snd_kcontrol_chip(kcontrol);
	dsp_spos_instance_t * ins = chip->dsp_spos_instance;
	unsigned int val;
	int change;

	down (&chip->spos_mutex);
	val = ((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[0]) << 24) |
		((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[1]) << 16) |
		((unsigned int)_wrap_all_bits(ucontrol->value.iec958.status[3])) |
		/* left and right validity bit */
		(1 << 13) | (1 << 12);


	change = ins->spdif_csuv_stream != val;
	ins->spdif_csuv_stream = val;

	if ( ins->spdif_status_out & DSP_SPDIF_STATUS_PLAYBACK_OPEN )
		cs46xx_poke_via_dsp (chip,SP_SPDOUT_CSUV,val);

	up (&chip->spos_mutex);

	return change;
}

#endif /* CONFIG_SND_CS46XX_NEW_DSP */


#ifdef CONFIG_SND_CS46XX_DEBUG_GPIO
static int snd_cs46xx_egpio_select_info(snd_kcontrol_t *kcontrol, 
                                        snd_ctl_elem_info_t *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 8;
	return 0;
}

static int snd_cs46xx_egpio_select_get(snd_kcontrol_t *kcontrol, 
                                       snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	ucontrol->value.integer.value[0] = chip->current_gpio;

	return 0;
}

static int snd_cs46xx_egpio_select_put(snd_kcontrol_t *kcontrol, 
                                       snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int change = (chip->current_gpio != ucontrol->value.integer.value[0]);
	chip->current_gpio = ucontrol->value.integer.value[0];

	return change;
}


static int snd_cs46xx_egpio_get(snd_kcontrol_t *kcontrol, 
                                       snd_ctl_elem_value_t *ucontrol)
{
	cs46xx_t *chip = snd_kcontrol_chip(kcontrol);
	int reg = kcontrol->private_