ymfpci_main.c

linux-2.6.15.6

		return 0;		/* already allocated */
	if (voices > 1) {
		if (ypcm->voices[0] != NULL && ypcm->voices[1] == NULL) {
			snd_ymfpci_voice_free(ypcm->chip, ypcm->voices[0]);
			ypcm->voices[0] = NULL;
		}		
	}
	err = snd_ymfpci_voice_alloc(ypcm->chip, YMFPCI_PCM, voices > 1, &ypcm->voices[0]);
	if (err < 0)
		return err;
	ypcm->voices[0]->ypcm = ypcm;
	ypcm->voices[0]->interrupt = snd_ymfpci_pcm_interrupt;
	if (voices > 1) {
		ypcm->voices[1] = &ypcm->chip->voices[ypcm->voices[0]->number + 1];
		ypcm->voices[1]->ypcm = ypcm;
	}
	return 0;
}

static void snd_ymfpci_pcm_init_voice(ymfpci_pcm_t *ypcm, unsigned int voiceidx,
				      snd_pcm_runtime_t *runtime,
				      int has_pcm_volume)
{
	ymfpci_voice_t *voice = ypcm->voices[voiceidx];
	u32 format;
	u32 delta = snd_ymfpci_calc_delta(runtime->rate);
	u32 lpfQ = snd_ymfpci_calc_lpfQ(runtime->rate);
	u32 lpfK = snd_ymfpci_calc_lpfK(runtime->rate);
	snd_ymfpci_playback_bank_t *bank;
	unsigned int nbank;
	u32 vol_left, vol_right;
	u8 use_left, use_right;

	snd_assert(voice != NULL, return);
	if (runtime->channels == 1) {
		use_left = 1;
		use_right = 1;
	} else {
		use_left = (voiceidx & 1) == 0;
		use_right = !use_left;
	}
	if (has_pcm_volume) {
		vol_left = cpu_to_le32(ypcm->chip->pcm_mixer
				       [ypcm->substream->number].left << 15);
		vol_right = cpu_to_le32(ypcm->chip->pcm_mixer
					[ypcm->substream->number].right << 15);
	} else {
		vol_left = cpu_to_le32(0x40000000);
		vol_right = cpu_to_le32(0x40000000);
	}
	format = runtime->channels == 2 ? 0x00010000 : 0;
	if (snd_pcm_format_width(runtime->format) == 8)
		format |= 0x80000000;
	if (runtime->channels == 2 && (voiceidx & 1) != 0)
		format |= 1;
	for (nbank = 0; nbank < 2; nbank++) {
		bank = &voice->bank[nbank];
		memset(bank, 0, sizeof(*bank));
		bank->format = cpu_to_le32(format);
		bank->base = cpu_to_le32(runtime->dma_addr);
		bank->loop_end = cpu_to_le32(ypcm->buffer_size);
		bank->lpfQ = cpu_to_le32(lpfQ);
		bank->delta =
		bank->delta_end = cpu_to_le32(delta);
		bank->lpfK =
		bank->lpfK_end = cpu_to_le32(lpfK);
		bank->eg_gain =
		bank->eg_gain_end = cpu_to_le32(0x40000000);

		if (ypcm->output_front) {
			if (use_left) {
				bank->left_gain =
				bank->left_gain_end = vol_left;
			}
			if (use_right) {
				bank->right_gain =
				bank->right_gain_end = vol_right;
			}
		}
		if (ypcm->output_rear) {
			if (use_left) {
				bank->eff2_gain =
				bank->eff2_gain_end = vol_left;
			}
			if (use_right) {
				bank->eff3_gain =
				bank->eff3_gain_end = vol_right;
			}
		}
	}
}

static int __devinit snd_ymfpci_ac3_init(ymfpci_t *chip)
{
	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
				4096, &chip->ac3_tmp_base) < 0)
		return -ENOMEM;

	chip->bank_effect[3][0]->base =
	chip->bank_effect[3][1]->base = cpu_to_le32(chip->ac3_tmp_base.addr);
	chip->bank_effect[3][0]->loop_end =
	chip->bank_effect[3][1]->loop_end = cpu_to_le32(1024);
	chip->bank_effect[4][0]->base =
	chip->bank_effect[4][1]->base = cpu_to_le32(chip->ac3_tmp_base.addr + 2048);
	chip->bank_effect[4][0]->loop_end =
	chip->bank_effect[4][1]->loop_end = cpu_to_le32(1024);

	spin_lock_irq(&chip->reg_lock);
	snd_ymfpci_writel(chip, YDSXGR_MAPOFEFFECT,
			  snd_ymfpci_readl(chip, YDSXGR_MAPOFEFFECT) | 3 << 3);
	spin_unlock_irq(&chip->reg_lock);
	return 0;
}

static int snd_ymfpci_ac3_done(ymfpci_t *chip)
{
	spin_lock_irq(&chip->reg_lock);
	snd_ymfpci_writel(chip, YDSXGR_MAPOFEFFECT,
			  snd_ymfpci_readl(chip, YDSXGR_MAPOFEFFECT) & ~(3 << 3));
	spin_unlock_irq(&chip->reg_lock);
	// snd_ymfpci_irq_wait(chip);
	if (chip->ac3_tmp_base.area) {
		snd_dma_free_pages(&chip->ac3_tmp_base);
		chip->ac3_tmp_base.area = NULL;
	}
	return 0;
}

static int snd_ymfpci_playback_hw_params(snd_pcm_substream_t * substream,
					 snd_pcm_hw_params_t * hw_params)
{
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm = runtime->private_data;
	int err;

	if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
		return err;
	if ((err = snd_ymfpci_pcm_voice_alloc(ypcm, params_channels(hw_params))) < 0)
		return err;
	return 0;
}

static int snd_ymfpci_playback_hw_free(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm;
	
	if (runtime->private_data == NULL)
		return 0;
	ypcm = runtime->private_data;

	/* wait, until the PCI operations are not finished */
	snd_ymfpci_irq_wait(chip);
	snd_pcm_lib_free_pages(substream);
	if (ypcm->voices[1]) {
		snd_ymfpci_voice_free(chip, ypcm->voices[1]);
		ypcm->voices[1] = NULL;
	}
	if (ypcm->voices[0]) {
		snd_ymfpci_voice_free(chip, ypcm->voices[0]);
		ypcm->voices[0] = NULL;
	}
	return 0;
}

static int snd_ymfpci_playback_prepare(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm = runtime->private_data;
	unsigned int nvoice;

	ypcm->period_size = runtime->period_size;
	ypcm->buffer_size = runtime->buffer_size;
	ypcm->period_pos = 0;
	ypcm->last_pos = 0;
	for (nvoice = 0; nvoice < runtime->channels; nvoice++)
		snd_ymfpci_pcm_init_voice(ypcm, nvoice, runtime,
					  substream->pcm == chip->pcm);
	return 0;
}

static int snd_ymfpci_capture_hw_params(snd_pcm_substream_t * substream,
					snd_pcm_hw_params_t * hw_params)
{
	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
}

static int snd_ymfpci_capture_hw_free(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);

	/* wait, until the PCI operations are not finished */
	snd_ymfpci_irq_wait(chip);
	return snd_pcm_lib_free_pages(substream);
}

static int snd_ymfpci_capture_prepare(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm = runtime->private_data;
	snd_ymfpci_capture_bank_t * bank;
	int nbank;
	u32 rate, format;

	ypcm->period_size = runtime->period_size;
	ypcm->buffer_size = runtime->buffer_size;
	ypcm->period_pos = 0;
	ypcm->last_pos = 0;
	ypcm->shift = 0;
	rate = ((48000 * 4096) / runtime->rate) - 1;
	format = 0;
	if (runtime->channels == 2) {
		format |= 2;
		ypcm->shift++;
	}
	if (snd_pcm_format_width(runtime->format) == 8)
		format |= 1;
	else
		ypcm->shift++;
	switch (ypcm->capture_bank_number) {
	case 0:
		snd_ymfpci_writel(chip, YDSXGR_RECFORMAT, format);
		snd_ymfpci_writel(chip, YDSXGR_RECSLOTSR, rate);
		break;
	case 1:
		snd_ymfpci_writel(chip, YDSXGR_ADCFORMAT, format);
		snd_ymfpci_writel(chip, YDSXGR_ADCSLOTSR, rate);
		break;
	}
	for (nbank = 0; nbank < 2; nbank++) {
		bank = chip->bank_capture[ypcm->capture_bank_number][nbank];
		bank->base = cpu_to_le32(runtime->dma_addr);
		bank->loop_end = cpu_to_le32(ypcm->buffer_size << ypcm->shift);
		bank->start = 0;
		bank->num_of_loops = 0;
	}
	return 0;
}

static snd_pcm_uframes_t snd_ymfpci_playback_pointer(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm = runtime->private_data;
	ymfpci_voice_t *voice = ypcm->voices[0];

	if (!(ypcm->running && voice))
		return 0;
	return le32_to_cpu(voice->bank[chip->active_bank].start);
}

static snd_pcm_uframes_t snd_ymfpci_capture_pointer(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm = runtime->private_data;

	if (!ypcm->running)
		return 0;
	return le32_to_cpu(chip->bank_capture[ypcm->capture_bank_number][chip->active_bank]->start) >> ypcm->shift;
}

static void snd_ymfpci_irq_wait(ymfpci_t *chip)
{
	wait_queue_t wait;
	int loops = 4;

	while (loops-- > 0) {
		if ((snd_ymfpci_readl(chip, YDSXGR_MODE) & 3) == 0)
		 	continue;
		init_waitqueue_entry(&wait, current);
		add_wait_queue(&chip->interrupt_sleep, &wait);
		atomic_inc(&chip->interrupt_sleep_count);
		schedule_timeout_uninterruptible(msecs_to_jiffies(50));
		remove_wait_queue(&chip->interrupt_sleep, &wait);
	}
}

static irqreturn_t snd_ymfpci_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
	ymfpci_t *chip = dev_id;
	u32 status, nvoice, mode;
	ymfpci_voice_t *voice;

	status = snd_ymfpci_readl(chip, YDSXGR_STATUS);
	if (status & 0x80000000) {
		chip->active_bank = snd_ymfpci_readl(chip, YDSXGR_CTRLSELECT) & 1;
		spin_lock(&chip->voice_lock);
		for (nvoice = 0; nvoice < YDSXG_PLAYBACK_VOICES; nvoice++) {
			voice = &chip->voices[nvoice];
			if (voice->interrupt)
				voice->interrupt(chip, voice);
		}
		for (nvoice = 0; nvoice < YDSXG_CAPTURE_VOICES; nvoice++) {
			if (chip->capture_substream[nvoice])
				snd_ymfpci_pcm_capture_interrupt(chip->capture_substream[nvoice]);
		}
#if 0
		for (nvoice = 0; nvoice < YDSXG_EFFECT_VOICES; nvoice++) {
			if (chip->effect_substream[nvoice])
				snd_ymfpci_pcm_effect_interrupt(chip->effect_substream[nvoice]);
		}
#endif
		spin_unlock(&chip->voice_lock);
		spin_lock(&chip->reg_lock);
		snd_ymfpci_writel(chip, YDSXGR_STATUS, 0x80000000);
		mode = snd_ymfpci_readl(chip, YDSXGR_MODE) | 2;
		snd_ymfpci_writel(chip, YDSXGR_MODE, mode);
		spin_unlock(&chip->reg_lock);

		if (atomic_read(&chip->interrupt_sleep_count)) {
			atomic_set(&chip->interrupt_sleep_count, 0);
			wake_up(&chip->interrupt_sleep);
		}
	}

	status = snd_ymfpci_readw(chip, YDSXGR_INTFLAG);
	if (status & 1) {
		if (chip->timer)
			snd_timer_interrupt(chip->timer, chip->timer->sticks);
	}
	snd_ymfpci_writew(chip, YDSXGR_INTFLAG, status);

	if (chip->rawmidi)
		snd_mpu401_uart_interrupt(irq, chip->rawmidi->private_data, regs);
	return IRQ_HANDLED;
}

static snd_pcm_hardware_t snd_ymfpci_playback =
{
	.info =			(SNDRV_PCM_INFO_MMAP |
				 SNDRV_PCM_INFO_MMAP_VALID | 
				 SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
				 SNDRV_PCM_INFO_PAUSE |
				 SNDRV_PCM_INFO_RESUME),
	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
	.rate_min =		8000,
	.rate_max =		48000,
	.channels_min =		1,
	.channels_max =		2,
	.buffer_bytes_max =	256 * 1024, /* FIXME: enough? */
	.period_bytes_min =	64,
	.period_bytes_max =	256 * 1024, /* FIXME: enough? */
	.periods_min =		3,
	.periods_max =		1024,
	.fifo_size =		0,
};

static snd_pcm_hardware_t snd_ymfpci_capture =
{
	.info =			(SNDRV_PCM_INFO_MMAP |
				 SNDRV_PCM_INFO_MMAP_VALID |
				 SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
				 SNDRV_PCM_INFO_PAUSE |
				 SNDRV_PCM_INFO_RESUME),
	.formats =		SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
	.rates =		SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
	.rate_min =		8000,
	.rate_max =		48000,
	.channels_min =		1,
	.channels_max =		2,
	.buffer_bytes_max =	256 * 1024, /* FIXME: enough? */
	.period_bytes_min =	64,
	.period_bytes_max =	256 * 1024, /* FIXME: enough? */
	.periods_min =		3,
	.periods_max =		1024,
	.fifo_size =		0,
};

static void snd_ymfpci_pcm_free_substream(snd_pcm_runtime_t *runtime)
{
	kfree(runtime->private_data);
}

static int snd_ymfpci_playback_open_1(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm;

	ypcm = kzalloc(sizeof(*ypcm), GFP_KERNEL);
	if (ypcm == NULL)
		return -ENOMEM;
	ypcm->chip = chip;
	ypcm->type = PLAYBACK_VOICE;
	ypcm->substream = substream;
	runtime->hw = snd_ymfpci_playback;
	runtime->private_data = ypcm;
	runtime->private_free = snd_ymfpci_pcm_free_substream;
	/* FIXME? True value is 256/48 = 5.33333 ms */
	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME, 5333, UINT_MAX);
	return 0;
}

/* call with spinlock held */
static void ymfpci_open_extension(ymfpci_t *chip)
{
	if (! chip->rear_opened) {
		if (! chip->spdif_opened) /* set AC3 */
			snd_ymfpci_writel(chip, YDSXGR_MODE,
					  snd_ymfpci_readl(chip, YDSXGR_MODE) | (1 << 30));
		/* enable second codec (4CHEN) */
		snd_ymfpci_writew(chip, YDSXGR_SECCONFIG,
				  (snd_ymfpci_readw(chip, YDSXGR_SECCONFIG) & ~0x0330) | 0x0010);
	}
}

/* call with spinlock held */
static void ymfpci_close_extension(ymfpci_t *chip)
{
	if (! chip->rear_opened) {
		if (! chip->spdif_opened)
			snd_ymfpci_writel(chip, YDSXGR_MODE,
					  snd_ymfpci_readl(chip, YDSXGR_MODE) & ~(1 << 30));
		snd_ymfpci_writew(chip, YDSXGR_SECCONFIG,
				  (snd_ymfpci_readw(chip, YDSXGR_SECCONFIG) & ~0x0330) & ~0x0010);
	}
}

static int snd_ymfpci_playback_open(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);
	snd_pcm_runtime_t *runtime = substream->runtime;
	ymfpci_pcm_t *ypcm;
	snd_kcontrol_t *kctl;
	int err;
	
	if ((err = snd_ymfpci_playback_open_1(substream)) < 0)
		return err;
	ypcm = runtime->private_data;
	ypcm->output_front = 1;
	ypcm->output_rear = chip->mode_dup4ch ? 1 : 0;
	spin_lock_irq(&chip->reg_lock);
	if (ypcm->output_rear) {
		ymfpci_open_extension(chip);
		chip->rear_opened++;
	}
	spin_unlock_irq(&chip->reg_lock);

	kctl = chip->pcm_mixer[substream->number].ctl;
	kctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
	snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_INFO, &kctl->id);
	return 0;
}

static int snd_ymfpci_playback_spdif_open(snd_pcm_substream_t * substream)
{
	ymfpci_t *chip = snd_pcm_substream_chip(substream);