1 files changed, 718 insertions, 0 deletions

diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
new file mode 100644
index 00000000000..dfad3db35c8
--- /dev/null
+++ b/sound/pci/oxygen/oxygen_pcm.c
@@ -0,0 +1,718 @@
+/*
+ * C-Media CMI8788 driver - PCM code
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ *
+ *
+ *  This driver is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License, version 2.
+ *
+ *  This driver is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this driver; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <linux/pci.h>
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include "oxygen.h"
+
+static const struct snd_pcm_hardware oxygen_stereo_hardware = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats = SNDRV_PCM_FMTBIT_S16_LE |
+		   SNDRV_PCM_FMTBIT_S32_LE,
+	.rates = SNDRV_PCM_RATE_32000 |
+		 SNDRV_PCM_RATE_44100 |
+		 SNDRV_PCM_RATE_48000 |
+		 SNDRV_PCM_RATE_64000 |
+		 SNDRV_PCM_RATE_88200 |
+		 SNDRV_PCM_RATE_96000 |
+		 SNDRV_PCM_RATE_176400 |
+		 SNDRV_PCM_RATE_192000,
+	.rate_min = 32000,
+	.rate_max = 192000,
+	.channels_min = 2,
+	.channels_max = 2,
+	.buffer_bytes_max = 256 * 1024,
+	.period_bytes_min = 128,
+	.period_bytes_max = 128 * 1024,
+	.periods_min = 2,
+	.periods_max = 2048,
+};
+static const struct snd_pcm_hardware oxygen_multichannel_hardware = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats = SNDRV_PCM_FMTBIT_S16_LE |
+		   SNDRV_PCM_FMTBIT_S32_LE,
+	.rates = SNDRV_PCM_RATE_32000 |
+		 SNDRV_PCM_RATE_44100 |
+		 SNDRV_PCM_RATE_48000 |
+		 SNDRV_PCM_RATE_64000 |
+		 SNDRV_PCM_RATE_88200 |
+		 SNDRV_PCM_RATE_96000 |
+		 SNDRV_PCM_RATE_176400 |
+		 SNDRV_PCM_RATE_192000,
+	.rate_min = 32000,
+	.rate_max = 192000,
+	.channels_min = 2,
+	.channels_max = 8,
+	.buffer_bytes_max = 2048 * 1024,
+	.period_bytes_min = 128,
+	.period_bytes_max = 256 * 1024,
+	.periods_min = 2,
+	.periods_max = 16384,
+};
+static const struct snd_pcm_hardware oxygen_ac97_hardware = {
+	.info = SNDRV_PCM_INFO_MMAP |
+		SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_INTERLEAVED |
+		SNDRV_PCM_INFO_PAUSE |
+		SNDRV_PCM_INFO_SYNC_START,
+	.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	.rates = SNDRV_PCM_RATE_48000,
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+	.buffer_bytes_max = 256 * 1024,
+	.period_bytes_min = 128,
+	.period_bytes_max = 128 * 1024,
+	.periods_min = 2,
+	.periods_max = 2048,
+};
+
+static const struct snd_pcm_hardware *const oxygen_hardware[PCM_COUNT] = {
+	[PCM_A] = &oxygen_stereo_hardware,
+	[PCM_B] = &oxygen_stereo_hardware,
+	[PCM_C] = &oxygen_stereo_hardware,
+	[PCM_SPDIF] = &oxygen_stereo_hardware,
+	[PCM_MULTICH] = &oxygen_multichannel_hardware,
+	[PCM_AC97] = &oxygen_ac97_hardware,
+};
+
+static inline unsigned int
+oxygen_substream_channel(struct snd_pcm_substream *substream)
+{
+	return (unsigned int)(uintptr_t)substream->runtime->private_data;
+}
+
+static int oxygen_open(struct snd_pcm_substream *substream,
+		       unsigned int channel)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	int err;
+
+	runtime->private_data = (void *)(uintptr_t)channel;
+	if (channel == PCM_B && chip->has_ac97_1 &&
+	    (chip->model->used_channels & OXYGEN_CHANNEL_AC97))
+		runtime->hw = oxygen_ac97_hardware;
+	else
+		runtime->hw = *oxygen_hardware[channel];
+	switch (channel) {
+	case PCM_C:
+		runtime->hw.rates &= ~(SNDRV_PCM_RATE_32000 |
+				       SNDRV_PCM_RATE_64000);
+		runtime->hw.rate_min = 44100;
+		break;
+	case PCM_MULTICH:
+		runtime->hw.channels_max = chip->model->dac_channels;
+		break;
+	}
+	if (chip->model->pcm_hardware_filter)
+		chip->model->pcm_hardware_filter(channel, &runtime->hw);
+	err = snd_pcm_hw_constraint_step(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
+	if (err < 0)
+		return err;
+	err = snd_pcm_hw_constraint_step(runtime, 0,
+					 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
+	if (err < 0)
+		return err;
+	if (runtime->hw.formats & SNDRV_PCM_FMTBIT_S32_LE) {
+		err = snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+		if (err < 0)
+			return err;
+	}
+	if (runtime->hw.channels_max > 2) {
+		err = snd_pcm_hw_constraint_step(runtime, 0,
+						 SNDRV_PCM_HW_PARAM_CHANNELS,
+						 2);
+		if (err < 0)
+			return err;
+	}
+	snd_pcm_set_sync(substream);
+	chip->streams[channel] = substream;
+
+	mutex_lock(&chip->mutex);
+	chip->pcm_active |= 1 << channel;
+	if (channel == PCM_SPDIF) {
+		chip->spdif_pcm_bits = chip->spdif_bits;
+		chip->controls[CONTROL_SPDIF_PCM]->vd[0].access &=
+			~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
+			       SNDRV_CTL_EVENT_MASK_INFO,
+			       &chip->controls[CONTROL_SPDIF_PCM]->id);
+	}
+	mutex_unlock(&chip->mutex);
+
+	return 0;
+}
+
+static int oxygen_rec_a_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_A);
+}
+
+static int oxygen_rec_b_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_B);
+}
+
+static int oxygen_rec_c_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_C);
+}
+
+static int oxygen_spdif_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_SPDIF);
+}
+
+static int oxygen_multich_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_MULTICH);
+}
+
+static int oxygen_ac97_open(struct snd_pcm_substream *substream)
+{
+	return oxygen_open(substream, PCM_AC97);
+}
+
+static int oxygen_close(struct snd_pcm_substream *substream)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	unsigned int channel = oxygen_substream_channel(substream);
+
+	mutex_lock(&chip->mutex);
+	chip->pcm_active &= ~(1 << channel);
+	if (channel == PCM_SPDIF) {
+		chip->controls[CONTROL_SPDIF_PCM]->vd[0].access |=
+			SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+		snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE |
+			       SNDRV_CTL_EVENT_MASK_INFO,
+			       &chip->controls[CONTROL_SPDIF_PCM]->id);
+	}
+	if (channel == PCM_SPDIF || channel == PCM_MULTICH)
+		oxygen_update_spdif_source(chip);
+	mutex_unlock(&chip->mutex);
+
+	chip->streams[channel] = NULL;
+	return 0;
+}
+
+static unsigned int oxygen_format(struct snd_pcm_hw_params *hw_params)
+{
+	if (params_format(hw_params) == SNDRV_PCM_FORMAT_S32_LE)
+		return OXYGEN_FORMAT_24;
+	else
+		return OXYGEN_FORMAT_16;
+}
+
+static unsigned int oxygen_rate(struct snd_pcm_hw_params *hw_params)
+{
+	switch (params_rate(hw_params)) {
+	case 32000:
+		return OXYGEN_RATE_32000;
+	case 44100:
+		return OXYGEN_RATE_44100;
+	default: /* 48000 */
+		return OXYGEN_RATE_48000;
+	case 64000:
+		return OXYGEN_RATE_64000;
+	case 88200:
+		return OXYGEN_RATE_88200;
+	case 96000:
+		return OXYGEN_RATE_96000;
+	case 176400:
+		return OXYGEN_RATE_176400;
+	case 192000:
+		return OXYGEN_RATE_192000;
+	}
+}
+
+static unsigned int oxygen_i2s_mclk(struct snd_pcm_hw_params *hw_params)
+{
+	if (params_rate(hw_params) <= 96000)
+		return OXYGEN_I2S_MCLK_256;
+	else
+		return OXYGEN_I2S_MCLK_128;
+}
+
+static unsigned int oxygen_i2s_bits(struct snd_pcm_hw_params *hw_params)
+{
+	if (params_format(hw_params) == SNDRV_PCM_FORMAT_S32_LE)
+		return OXYGEN_I2S_BITS_24;
+	else
+		return OXYGEN_I2S_BITS_16;
+}
+
+static unsigned int oxygen_play_channels(struct snd_pcm_hw_params *hw_params)
+{
+	switch (params_channels(hw_params)) {
+	default: /* 2 */
+		return OXYGEN_PLAY_CHANNELS_2;
+	case 4:
+		return OXYGEN_PLAY_CHANNELS_4;
+	case 6:
+		return OXYGEN_PLAY_CHANNELS_6;
+	case 8:
+		return OXYGEN_PLAY_CHANNELS_8;
+	}
+}
+
+static const unsigned int channel_base_registers[PCM_COUNT] = {
+	[PCM_A] = OXYGEN_DMA_A_ADDRESS,
+	[PCM_B] = OXYGEN_DMA_B_ADDRESS,
+	[PCM_C] = OXYGEN_DMA_C_ADDRESS,
+	[PCM_SPDIF] = OXYGEN_DMA_SPDIF_ADDRESS,
+	[PCM_MULTICH] = OXYGEN_DMA_MULTICH_ADDRESS,
+	[PCM_AC97] = OXYGEN_DMA_AC97_ADDRESS,
+};
+
+static int oxygen_hw_params(struct snd_pcm_substream *substream,
+			    struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	unsigned int channel = oxygen_substream_channel(substream);
+	int err;
+
+	err = snd_pcm_lib_malloc_pages(substream,
+				       params_buffer_bytes(hw_params));
+	if (err < 0)
+		return err;
+
+	oxygen_write32(chip, channel_base_registers[channel],
+		       (u32)substream->runtime->dma_addr);
+	if (channel == PCM_MULTICH) {
+		oxygen_write32(chip, OXYGEN_DMA_MULTICH_COUNT,
+			       params_buffer_bytes(hw_params) / 4 - 1);
+		oxygen_write32(chip, OXYGEN_DMA_MULTICH_TCOUNT,
+			       params_period_bytes(hw_params) / 4 - 1);
+	} else {
+		oxygen_write16(chip, channel_base_registers[channel] + 4,
+			       params_buffer_bytes(hw_params) / 4 - 1);
+		oxygen_write16(chip, channel_base_registers[channel] + 6,
+			       params_period_bytes(hw_params) / 4 - 1);
+	}
+	return 0;
+}
+
+static int oxygen_rec_a_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	int err;
+
+	err = oxygen_hw_params(substream, hw_params);
+	if (err < 0)
+		return err;
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
+			     oxygen_format(hw_params) << OXYGEN_REC_FORMAT_A_SHIFT,
+			     OXYGEN_REC_FORMAT_A_MASK);
+	oxygen_write16_masked(chip, OXYGEN_I2S_A_FORMAT,
+			      oxygen_rate(hw_params) |
+			      oxygen_i2s_mclk(hw_params) |
+			      chip->model->adc_i2s_format |
+			      oxygen_i2s_bits(hw_params),
+			      OXYGEN_I2S_RATE_MASK |
+			      OXYGEN_I2S_FORMAT_MASK |
+			      OXYGEN_I2S_MCLK_MASK |
+			      OXYGEN_I2S_BITS_MASK);
+	spin_unlock_irq(&chip->reg_lock);
+
+	mutex_lock(&chip->mutex);
+	chip->model->set_adc_params(chip, hw_params);
+	mutex_unlock(&chip->mutex);
+	return 0;
+}
+
+static int oxygen_rec_b_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	int is_ac97;
+	int err;
+
+	err = oxygen_hw_params(substream, hw_params);
+	if (err < 0)
+		return err;
+
+	is_ac97 = chip->has_ac97_1 &&
+		(chip->model->used_channels & OXYGEN_CHANNEL_AC97);
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
+			     oxygen_format(hw_params) << OXYGEN_REC_FORMAT_B_SHIFT,
+			     OXYGEN_REC_FORMAT_B_MASK);
+	if (!is_ac97)
+		oxygen_write16_masked(chip, OXYGEN_I2S_B_FORMAT,
+				      oxygen_rate(hw_params) |
+				      oxygen_i2s_mclk(hw_params) |
+				      chip->model->adc_i2s_format |
+				      oxygen_i2s_bits(hw_params),
+				      OXYGEN_I2S_RATE_MASK |
+				      OXYGEN_I2S_FORMAT_MASK |
+				      OXYGEN_I2S_MCLK_MASK |
+				      OXYGEN_I2S_BITS_MASK);
+	spin_unlock_irq(&chip->reg_lock);
+
+	if (!is_ac97) {
+		mutex_lock(&chip->mutex);
+		chip->model->set_adc_params(chip, hw_params);
+		mutex_unlock(&chip->mutex);
+	}
+	return 0;
+}
+
+static int oxygen_rec_c_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	int err;
+
+	err = oxygen_hw_params(substream, hw_params);
+	if (err < 0)
+		return err;
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_write8_masked(chip, OXYGEN_REC_FORMAT,
+			     oxygen_format(hw_params) << OXYGEN_REC_FORMAT_C_SHIFT,
+			     OXYGEN_REC_FORMAT_C_MASK);
+	spin_unlock_irq(&chip->reg_lock);
+	return 0;
+}
+
+static int oxygen_spdif_hw_params(struct snd_pcm_substream *substream,
+				  struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	int err;
+
+	err = oxygen_hw_params(substream, hw_params);
+	if (err < 0)
+		return err;
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
+			    OXYGEN_SPDIF_OUT_ENABLE);
+	oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
+			     oxygen_format(hw_params) << OXYGEN_SPDIF_FORMAT_SHIFT,
+			     OXYGEN_SPDIF_FORMAT_MASK);
+	oxygen_write32_masked(chip, OXYGEN_SPDIF_CONTROL,
+			      oxygen_rate(hw_params) << OXYGEN_SPDIF_OUT_RATE_SHIFT,
+			      OXYGEN_SPDIF_OUT_RATE_MASK);
+	oxygen_update_spdif_source(chip);
+	spin_unlock_irq(&chip->reg_lock);
+	return 0;
+}
+
+static int oxygen_multich_hw_params(struct snd_pcm_substream *substream,
+				    struct snd_pcm_hw_params *hw_params)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	int err;
+
+	err = oxygen_hw_params(substream, hw_params);
+	if (err < 0)
+		return err;
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_write8_masked(chip, OXYGEN_PLAY_CHANNELS,
+			     oxygen_play_channels(hw_params),
+			     OXYGEN_PLAY_CHANNELS_MASK);
+	oxygen_write8_masked(chip, OXYGEN_PLAY_FORMAT,
+			     oxygen_format(hw_params) << OXYGEN_MULTICH_FORMAT_SHIFT,
+			     OXYGEN_MULTICH_FORMAT_MASK);
+	oxygen_write16_masked(chip, OXYGEN_I2S_MULTICH_FORMAT,
+			      oxygen_rate(hw_params) |
+			      chip->model->dac_i2s_format |
+			      oxygen_i2s_bits(hw_params),
+			      OXYGEN_I2S_RATE_MASK |
+			      OXYGEN_I2S_FORMAT_MASK |
+			      OXYGEN_I2S_BITS_MASK);
+	oxygen_update_dac_routing(chip);
+	oxygen_update_spdif_source(chip);
+	spin_unlock_irq(&chip->reg_lock);
+
+	mutex_lock(&chip->mutex);
+	chip->model->set_dac_params(chip, hw_params);
+	mutex_unlock(&chip->mutex);
+	return 0;
+}
+
+static int oxygen_hw_free(struct snd_pcm_substream *substream)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	unsigned int channel = oxygen_substream_channel(substream);
+
+	spin_lock_irq(&chip->reg_lock);
+	chip->interrupt_mask &= ~(1 << channel);
+	oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
+	spin_unlock_irq(&chip->reg_lock);
+
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static int oxygen_spdif_hw_free(struct snd_pcm_substream *substream)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_clear_bits32(chip, OXYGEN_SPDIF_CONTROL,
+			    OXYGEN_SPDIF_OUT_ENABLE);
+	spin_unlock_irq(&chip->reg_lock);
+	return oxygen_hw_free(substream);
+}
+
+static int oxygen_prepare(struct snd_pcm_substream *substream)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	unsigned int channel = oxygen_substream_channel(substream);
+	unsigned int channel_mask = 1 << channel;
+
+	spin_lock_irq(&chip->reg_lock);
+	oxygen_set_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
+	oxygen_clear_bits8(chip, OXYGEN_DMA_FLUSH, channel_mask);
+
+	chip->interrupt_mask |= channel_mask;
+	oxygen_write16(chip, OXYGEN_INTERRUPT_MASK, chip->interrupt_mask);
+	spin_unlock_irq(&chip->reg_lock);
+	return 0;
+}
+
+static int oxygen_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_substream *s;
+	unsigned int mask = 0;
+	int pausing;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_START:
+		pausing = 0;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		pausing = 1;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	snd_pcm_group_for_each_entry(s, substream) {
+		if (snd_pcm_substream_chip(s) == chip) {
+			mask |= 1 << oxygen_substream_channel(s);
+			snd_pcm_trigger_done(s, substream);
+		}
+	}
+
+	spin_lock(&chip->reg_lock);
+	if (!pausing) {
+		if (cmd == SNDRV_PCM_TRIGGER_START)
+			chip->pcm_running |= mask;
+		else
+			chip->pcm_running &= ~mask;
+		oxygen_write8(chip, OXYGEN_DMA_STATUS, chip->pcm_running);
+	} else {
+		if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
+			oxygen_set_bits8(chip, OXYGEN_DMA_PAUSE, mask);
+		else
+			oxygen_clear_bits8(chip, OXYGEN_DMA_PAUSE, mask);
+	}
+	spin_unlock(&chip->reg_lock);
+	return 0;
+}
+
+static snd_pcm_uframes_t oxygen_pointer(struct snd_pcm_substream *substream)
+{
+	struct oxygen *chip = snd_pcm_substream_chip(substream);
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	unsigned int channel = oxygen_substream_channel(substream);
+	u32 curr_addr;
+
+	/* no spinlock, this read should be atomic */
+	curr_addr = oxygen_read32(chip, channel_base_registers[channel]);
+	return bytes_to_frames(runtime, curr_addr - (u32)runtime->dma_addr);
+}
+
+static struct snd_pcm_ops oxygen_rec_a_ops = {
+	.open      = oxygen_rec_a_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_rec_a_hw_params,
+	.hw_free   = oxygen_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static struct snd_pcm_ops oxygen_rec_b_ops = {
+	.open      = oxygen_rec_b_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_rec_b_hw_params,
+	.hw_free   = oxygen_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static struct snd_pcm_ops oxygen_rec_c_ops = {
+	.open      = oxygen_rec_c_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_rec_c_hw_params,
+	.hw_free   = oxygen_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static struct snd_pcm_ops oxygen_spdif_ops = {
+	.open      = oxygen_spdif_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_spdif_hw_params,
+	.hw_free   = oxygen_spdif_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static struct snd_pcm_ops oxygen_multich_ops = {
+	.open      = oxygen_multich_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_multich_hw_params,
+	.hw_free   = oxygen_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static struct snd_pcm_ops oxygen_ac97_ops = {
+	.open      = oxygen_ac97_open,
+	.close     = oxygen_close,
+	.ioctl     = snd_pcm_lib_ioctl,
+	.hw_params = oxygen_hw_params,
+	.hw_free   = oxygen_hw_free,
+	.prepare   = oxygen_prepare,
+	.trigger   = oxygen_trigger,
+	.pointer   = oxygen_pointer,
+};
+
+static void oxygen_pcm_free(struct snd_pcm *pcm)
+{
+	snd_pcm_lib_preallocate_free_for_all(pcm);
+}
+
+int __devinit oxygen_pcm_init(struct oxygen *chip)
+{
+	struct snd_pcm *pcm;
+	int outs, ins;
+	int err;
+
+	outs = 1; /* OXYGEN_CHANNEL_MULTICH is always used */
+	ins = !!(chip->model->used_channels & (OXYGEN_CHANNEL_A |
+					       OXYGEN_CHANNEL_B));
+	err = snd_pcm_new(chip->card, "Analog", 0, outs, ins, &pcm);
+	if (err < 0)
+		return err;
+	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &oxygen_multich_ops);
+	if (chip->model->used_channels & OXYGEN_CHANNEL_A)
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+				&oxygen_rec_a_ops);
+	else if (chip->model->used_channels & OXYGEN_CHANNEL_B)
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+				&oxygen_rec_b_ops);
+	pcm->private_data = chip;
+	pcm->private_free = oxygen_pcm_free;
+	strcpy(pcm->name, "Analog");
+	snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream,
+				      SNDRV_DMA_TYPE_DEV,
+				      snd_dma_pci_data(chip->pci),
+				      512 * 1024, 2048 * 1024);
+	if (ins)
+		snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+					      SNDRV_DMA_TYPE_DEV,
+					      snd_dma_pci_data(chip->pci),
+					      128 * 1024, 256 * 1024);
+
+	outs = !!(chip->model->used_channels & OXYGEN_CHANNEL_SPDIF);
+	ins = !!(chip->model->used_channels & OXYGEN_CHANNEL_C);
+	if (outs | ins) {
+		err = snd_pcm_new(chip->card, "Digital", 1, outs, ins, &pcm);
+		if (err < 0)
+			return err;
+		if (outs)
+			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+					&oxygen_spdif_ops);
+		if (ins)
+			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+					&oxygen_rec_c_ops);
+		pcm->private_data = chip;
+		pcm->private_free = oxygen_pcm_free;
+		strcpy(pcm->name, "Digital");
+		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+						      snd_dma_pci_data(chip->pci),
+						      128 * 1024, 256 * 1024);
+	}
+
+	outs = chip->has_ac97_1 &&
+		(chip->model->used_channels & OXYGEN_CHANNEL_AC97);
+	ins = outs ||
+		(chip->model->used_channels & (OXYGEN_CHANNEL_A |
+					       OXYGEN_CHANNEL_B))
+		== (OXYGEN_CHANNEL_A | OXYGEN_CHANNEL_B);
+	if (outs | ins) {
+		err = snd_pcm_new(chip->card, outs ? "AC97" : "Analog2",
+				  2, outs, ins, &pcm);
+		if (err < 0)
+			return err;
+		if (outs) {
+			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+					&oxygen_ac97_ops);
+			oxygen_write8_masked(chip, OXYGEN_REC_ROUTING,
+					     OXYGEN_REC_B_ROUTE_AC97_1,
+					     OXYGEN_REC_B_ROUTE_MASK);
+		}
+		if (ins)
+			snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+					&oxygen_rec_b_ops);
+		pcm->private_data = chip;
+		pcm->private_free = oxygen_pcm_free;
+		strcpy(pcm->name, outs ? "Front Panel" : "Analog 2");
+		snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+						      snd_dma_pci_data(chip->pci),
+						      128 * 1024, 256 * 1024);
+	}
+	return 0;
+}