[deliverable/linux.git] / sound / pci / ctxfi / ctpcm.c

/**
 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
 *
 * This source file is released under GPL v2 license (no other versions).
 * See the COPYING file included in the main directory of this source
 * distribution for the license terms and conditions.
 *
 * @File	ctpcm.c
 *
 * @Brief
 * This file contains the definition of the pcm device functions.
 *
 * @Author	Liu Chun
 * @Date 	Apr 2 2008
 *
 */

#include "ctpcm.h"
#include "cttimer.h"
#include <linux/slab.h>
#include <sound/pcm.h>

/* Hardware descriptions for playback */
static struct snd_pcm_hardware ct_pcm_playback_hw = {
	.info			= (SNDRV_PCM_INFO_MMAP |
				   SNDRV_PCM_INFO_INTERLEAVED |
				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
				   SNDRV_PCM_INFO_MMAP_VALID |
				   SNDRV_PCM_INFO_PAUSE),
	.formats		= (SNDRV_PCM_FMTBIT_U8 |
				   SNDRV_PCM_FMTBIT_S16_LE |
				   SNDRV_PCM_FMTBIT_S24_3LE |
				   SNDRV_PCM_FMTBIT_S32_LE |
				   SNDRV_PCM_FMTBIT_FLOAT_LE),
	.rates			= (SNDRV_PCM_RATE_CONTINUOUS |
				   SNDRV_PCM_RATE_8000_192000),
	.rate_min		= 8000,
	.rate_max		= 192000,
	.channels_min		= 1,
	.channels_max		= 2,
	.buffer_bytes_max	= (128*1024),
	.period_bytes_min	= (64),
	.period_bytes_max	= (128*1024),
	.periods_min		= 2,
	.periods_max		= 1024,
	.fifo_size		= 0,
};

static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
	.info			= (SNDRV_PCM_INFO_MMAP |
				   SNDRV_PCM_INFO_INTERLEAVED |
				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
				   SNDRV_PCM_INFO_MMAP_VALID |
				   SNDRV_PCM_INFO_PAUSE),
	.formats		= SNDRV_PCM_FMTBIT_S16_LE,
	.rates			= (SNDRV_PCM_RATE_48000 |
				   SNDRV_PCM_RATE_44100 |
				   SNDRV_PCM_RATE_32000),
	.rate_min		= 32000,
	.rate_max		= 48000,
	.channels_min		= 2,
	.channels_max		= 2,
	.buffer_bytes_max	= (128*1024),
	.period_bytes_min	= (64),
	.period_bytes_max	= (128*1024),
	.periods_min		= 2,
	.periods_max		= 1024,
	.fifo_size		= 0,
};

/* Hardware descriptions for capture */
static struct snd_pcm_hardware ct_pcm_capture_hw = {
	.info			= (SNDRV_PCM_INFO_MMAP |
				   SNDRV_PCM_INFO_INTERLEAVED |
				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
				   SNDRV_PCM_INFO_PAUSE |
				   SNDRV_PCM_INFO_MMAP_VALID),
	.formats		= (SNDRV_PCM_FMTBIT_U8 |
				   SNDRV_PCM_FMTBIT_S16_LE |
				   SNDRV_PCM_FMTBIT_S24_3LE |
				   SNDRV_PCM_FMTBIT_S32_LE |
				   SNDRV_PCM_FMTBIT_FLOAT_LE),
	.rates			= (SNDRV_PCM_RATE_CONTINUOUS |
				   SNDRV_PCM_RATE_8000_96000),
	.rate_min		= 8000,
	.rate_max		= 96000,
	.channels_min		= 1,
	.channels_max		= 2,
	.buffer_bytes_max	= (128*1024),
	.period_bytes_min	= (384),
	.period_bytes_max	= (64*1024),
	.periods_min		= 2,
	.periods_max		= 1024,
	.fifo_size		= 0,
};

static void ct_atc_pcm_interrupt(struct ct_atc_pcm *atc_pcm)
{
	struct ct_atc_pcm *apcm = atc_pcm;

	if (!apcm->substream)
		return;

	snd_pcm_period_elapsed(apcm->substream);
}

static void ct_atc_pcm_free_substream(struct snd_pcm_runtime *runtime)
{
	struct ct_atc_pcm *apcm = runtime->private_data;
	struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream);

	atc->pcm_release_resources(atc, apcm);
	ct_timer_instance_free(apcm->timer);
	kfree(apcm);
	runtime->private_data = NULL;
}

/* pcm playback operations */
static int ct_pcm_playback_open(struct snd_pcm_substream *substream)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm;
	int err;

	apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
	if (!apcm)
		return -ENOMEM;

	apcm->substream = substream;
	apcm->interrupt = ct_atc_pcm_interrupt;
	if (IEC958 == substream->pcm->device) {
		runtime->hw = ct_spdif_passthru_playback_hw;
		atc->spdif_out_passthru(atc, 1);
	} else {
		runtime->hw = ct_pcm_playback_hw;
		if (FRONT == substream->pcm->device)
			runtime->hw.channels_max = 8;
	}

	err = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);
	if (err < 0) {
		kfree(apcm);
		return err;
	}
	err = snd_pcm_hw_constraint_minmax(runtime,
					   SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
					   1024, UINT_MAX);
	if (err < 0) {
		kfree(apcm);
		return err;
	}

	apcm->timer = ct_timer_instance_new(atc->timer, apcm);
	if (!apcm->timer) {
		kfree(apcm);
		return -ENOMEM;
	}
	runtime->private_data = apcm;
	runtime->private_free = ct_atc_pcm_free_substream;

	return 0;
}

static int ct_pcm_playback_close(struct snd_pcm_substream *substream)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);

	/* TODO: Notify mixer inactive. */
	if (IEC958 == substream->pcm->device)
		atc->spdif_out_passthru(atc, 0);

	/* The ct_atc_pcm object will be freed by runtime->private_free */

	return 0;
}

static int ct_pcm_hw_params(struct snd_pcm_substream *substream,
				     struct snd_pcm_hw_params *hw_params)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct ct_atc_pcm *apcm = substream->runtime->private_data;
	int err;

	err = snd_pcm_lib_malloc_pages(substream,
					params_buffer_bytes(hw_params));
	if (err < 0)
		return err;
	/* clear previous resources */
	atc->pcm_release_resources(atc, apcm);
	return err;
}

static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct ct_atc_pcm *apcm = substream->runtime->private_data;

	/* clear previous resources */
	atc->pcm_release_resources(atc, apcm);
	/* Free snd-allocated pages */
	return snd_pcm_lib_free_pages(substream);
}


static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream)
{
	int err;
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	if (IEC958 == substream->pcm->device)
		err = atc->spdif_passthru_playback_prepare(atc, apcm);
	else
		err = atc->pcm_playback_prepare(atc, apcm);

	if (err < 0) {
		printk(KERN_ERR "ctxfi: Preparing pcm playback failed!!!\n");
		return err;
	}

	return 0;
}

static int
ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
	case SNDRV_PCM_TRIGGER_RESUME:
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
		atc->pcm_playback_start(atc, apcm);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_SUSPEND:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
		atc->pcm_playback_stop(atc, apcm);
		break;
	default:
		break;
	}

	return 0;
}

static snd_pcm_uframes_t
ct_pcm_playback_pointer(struct snd_pcm_substream *substream)
{
	unsigned long position;
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	/* Read out playback position */
	position = atc->pcm_playback_position(atc, apcm);
	position = bytes_to_frames(runtime, position);
	if (position >= runtime->buffer_size)
		position = 0;
	return position;
}

/* pcm capture operations */
static int ct_pcm_capture_open(struct snd_pcm_substream *substream)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm;
	int err;

	apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
	if (!apcm)
		return -ENOMEM;

	apcm->started = 0;
	apcm->substream = substream;
	apcm->interrupt = ct_atc_pcm_interrupt;
	runtime->hw = ct_pcm_capture_hw;
	runtime->hw.rate_max = atc->rsr * atc->msr;

	err = snd_pcm_hw_constraint_integer(runtime,
					    SNDRV_PCM_HW_PARAM_PERIODS);
	if (err < 0) {
		kfree(apcm);
		return err;
	}
	err = snd_pcm_hw_constraint_minmax(runtime,
					   SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
					   1024, UINT_MAX);
	if (err < 0) {
		kfree(apcm);
		return err;
	}

	apcm->timer = ct_timer_instance_new(atc->timer, apcm);
	if (!apcm->timer) {
		kfree(apcm);
		return -ENOMEM;
	}
	runtime->private_data = apcm;
	runtime->private_free = ct_atc_pcm_free_substream;

	return 0;
}

static int ct_pcm_capture_close(struct snd_pcm_substream *substream)
{
	/* The ct_atc_pcm object will be freed by runtime->private_free */
	/* TODO: Notify mixer inactive. */
	return 0;
}

static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream)
{
	int err;
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	err = atc->pcm_capture_prepare(atc, apcm);
	if (err < 0) {
		printk(KERN_ERR "ctxfi: Preparing pcm capture failed!!!\n");
		return err;
	}

	return 0;
}

static int
ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
{
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		atc->pcm_capture_start(atc, apcm);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		atc->pcm_capture_stop(atc, apcm);
		break;
	default:
		atc->pcm_capture_stop(atc, apcm);
		break;
	}

	return 0;
}

static snd_pcm_uframes_t
ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
{
	unsigned long position;
	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct ct_atc_pcm *apcm = runtime->private_data;

	/* Read out playback position */
	position = atc->pcm_capture_position(atc, apcm);
	position = bytes_to_frames(runtime, position);
	if (position >= runtime->buffer_size)
		position = 0;
	return position;
}

/* PCM operators for playback */
static struct snd_pcm_ops ct_pcm_playback_ops = {
	.open	 	= ct_pcm_playback_open,
	.close		= ct_pcm_playback_close,
	.ioctl		= snd_pcm_lib_ioctl,
	.hw_params	= ct_pcm_hw_params,
	.hw_free	= ct_pcm_hw_free,
	.prepare	= ct_pcm_playback_prepare,
	.trigger	= ct_pcm_playback_trigger,
	.pointer	= ct_pcm_playback_pointer,
	.page		= snd_pcm_sgbuf_ops_page,
};

/* PCM operators for capture */
static struct snd_pcm_ops ct_pcm_capture_ops = {
	.open	 	= ct_pcm_capture_open,
	.close		= ct_pcm_capture_close,
	.ioctl		= snd_pcm_lib_ioctl,
	.hw_params	= ct_pcm_hw_params,
	.hw_free	= ct_pcm_hw_free,
	.prepare	= ct_pcm_capture_prepare,
	.trigger	= ct_pcm_capture_trigger,
	.pointer	= ct_pcm_capture_pointer,
	.page		= snd_pcm_sgbuf_ops_page,
};

static const struct snd_pcm_chmap_elem surround_map[] = {
	{ .channels = 1,
	  .map = { SNDRV_CHMAP_UNKNOWN } },
	{ .channels = 2,
	  .map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
	{ }
};

static const struct snd_pcm_chmap_elem clfe_map[] = {
	{ .channels = 1,
	  .map = { SNDRV_CHMAP_UNKNOWN } },
	{ .channels = 2,
	  .map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
	{ }
};

static const struct snd_pcm_chmap_elem side_map[] = {
	{ .channels = 1,
	  .map = { SNDRV_CHMAP_UNKNOWN } },
	{ .channels = 2,
	  .map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
	{ }
};

/* Create ALSA pcm device */
int ct_alsa_pcm_create(struct ct_atc *atc,
		       enum CTALSADEVS device,
		       const char *device_name)
{
	struct snd_pcm *pcm;
	const struct snd_pcm_chmap_elem *map;
	int chs;
	int err;
	int playback_count, capture_count;

	playback_count = (IEC958 == device) ? 1 : 256;
	capture_count = (FRONT == device) ? 1 : 0;
	err = snd_pcm_new(atc->card, "ctxfi", device,
			  playback_count, capture_count, &pcm);
	if (err < 0) {
		printk(KERN_ERR "ctxfi: snd_pcm_new failed!! Err=%d\n", err);
		return err;
	}

	pcm->private_data = atc;
	pcm->info_flags = 0;
	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
	strlcpy(pcm->name, device_name, sizeof(pcm->name));

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops);

	if (FRONT == device)
		snd_pcm_set_ops(pcm,
				SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops);

	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
			snd_dma_pci_data(atc->pci), 128*1024, 128*1024);

	chs = 2;
	switch (device) {
	case FRONT:
		chs = 8;
		map = snd_pcm_std_chmaps;
		break;
	case SURROUND:
		map = surround_map;
		break;
	case CLFE:
		map = clfe_map;
		break;
	case SIDE:
		map = side_map;
		break;
	default:
		map = snd_pcm_std_chmaps;
		break;
	}
	err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs,
				     0, NULL);
	if (err < 0)
		return err;

#ifdef CONFIG_PM_SLEEP
	atc->pcms[device] = pcm;
#endif

	return 0;
}
Commit	Line	Data
8cc72361 WYC	1	/**
	2	* Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
	3	*
	4	* This source file is released under GPL v2 license (no other versions).
	5	* See the COPYING file included in the main directory of this source
	6	* distribution for the license terms and conditions.
	7	*
	8	* @File ctpcm.c
	9	*
	10	* @Brief
	11	* This file contains the definition of the pcm device functions.
	12	*
	13	* @Author Liu Chun
	14	* @Date Apr 2 2008
	15	*
	16	*/
	17
	18	#include "ctpcm.h"
b7bbf876	19	#include "cttimer.h"
5a0e3ad6	20	#include <linux/slab.h>
8cc72361 WYC	21	#include <sound/pcm.h>
	22
	23	/* Hardware descriptions for playback */
	24	static struct snd_pcm_hardware ct_pcm_playback_hw = {
	25	.info = (SNDRV_PCM_INFO_MMAP \|
	26	SNDRV_PCM_INFO_INTERLEAVED \|
	27	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	28	SNDRV_PCM_INFO_MMAP_VALID \|
	29	SNDRV_PCM_INFO_PAUSE),
	30	.formats = (SNDRV_PCM_FMTBIT_U8 \|
8cc72361	31	SNDRV_PCM_FMTBIT_S16_LE \|
8cc72361	32	SNDRV_PCM_FMTBIT_S24_3LE \|
d2b9b96c TI	33	SNDRV_PCM_FMTBIT_S32_LE \|
d2b9b96c TI	34	SNDRV_PCM_FMTBIT_FLOAT_LE),
8cc72361 WYC	35	.rates = (SNDRV_PCM_RATE_CONTINUOUS \|
	36	SNDRV_PCM_RATE_8000_192000),
	37	.rate_min = 8000,
	38	.rate_max = 192000,
	39	.channels_min = 1,
	40	.channels_max = 2,
	41	.buffer_bytes_max = (128*1024),
	42	.period_bytes_min = (64),
	43	.period_bytes_max = (128*1024),
775ffa1d	44	.periods_min = 2,
8cc72361 WYC	45	.periods_max = 1024,
	46	.fifo_size = 0,
	47	};
	48
	49	static struct snd_pcm_hardware ct_spdif_passthru_playback_hw = {
	50	.info = (SNDRV_PCM_INFO_MMAP \|
	51	SNDRV_PCM_INFO_INTERLEAVED \|
	52	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	53	SNDRV_PCM_INFO_MMAP_VALID \|
	54	SNDRV_PCM_INFO_PAUSE),
d2b9b96c	55	.formats = SNDRV_PCM_FMTBIT_S16_LE,
8cc72361 WYC	56	.rates = (SNDRV_PCM_RATE_48000 \|
	57	SNDRV_PCM_RATE_44100 \|
	58	SNDRV_PCM_RATE_32000),
	59	.rate_min = 32000,
	60	.rate_max = 48000,
	61	.channels_min = 2,
	62	.channels_max = 2,
	63	.buffer_bytes_max = (128*1024),
	64	.period_bytes_min = (64),
	65	.period_bytes_max = (128*1024),
775ffa1d	66	.periods_min = 2,
8cc72361 WYC	67	.periods_max = 1024,
	68	.fifo_size = 0,
	69	};
	70
	71	/* Hardware descriptions for capture */
	72	static struct snd_pcm_hardware ct_pcm_capture_hw = {
	73	.info = (SNDRV_PCM_INFO_MMAP \|
	74	SNDRV_PCM_INFO_INTERLEAVED \|
	75	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	76	SNDRV_PCM_INFO_PAUSE \|
	77	SNDRV_PCM_INFO_MMAP_VALID),
	78	.formats = (SNDRV_PCM_FMTBIT_U8 \|
8cc72361	79	SNDRV_PCM_FMTBIT_S16_LE \|
8cc72361	80	SNDRV_PCM_FMTBIT_S24_3LE \|
d2b9b96c TI	81	SNDRV_PCM_FMTBIT_S32_LE \|
d2b9b96c TI	82	SNDRV_PCM_FMTBIT_FLOAT_LE),
8cc72361 WYC	83	.rates = (SNDRV_PCM_RATE_CONTINUOUS \|
	84	SNDRV_PCM_RATE_8000_96000),
	85	.rate_min = 8000,
	86	.rate_max = 96000,
	87	.channels_min = 1,
	88	.channels_max = 2,
	89	.buffer_bytes_max = (128*1024),
	90	.period_bytes_min = (384),
	91	.period_bytes_max = (64*1024),
	92	.periods_min = 2,
	93	.periods_max = 1024,
	94	.fifo_size = 0,
	95	};
	96
	97	static void ct_atc_pcm_interrupt(struct ct_atc_pcm *atc_pcm)
	98	{
	99	struct ct_atc_pcm *apcm = atc_pcm;
	100
35ebf6e7	101	if (!apcm->substream)
8cc72361 WYC	102	return;
	103
	104	snd_pcm_period_elapsed(apcm->substream);
	105	}
	106
	107	static void ct_atc_pcm_free_substream(struct snd_pcm_runtime *runtime)
	108	{
	109	struct ct_atc_pcm *apcm = runtime->private_data;
	110	struct ct_atc *atc = snd_pcm_substream_chip(apcm->substream);
	111
	112	atc->pcm_release_resources(atc, apcm);
b7bbf876	113	ct_timer_instance_free(apcm->timer);
8cc72361 WYC	114	kfree(apcm);
	115	runtime->private_data = NULL;
	116	}
	117
	118	/* pcm playback operations */
	119	static int ct_pcm_playback_open(struct snd_pcm_substream *substream)
	120	{
	121	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	122	struct snd_pcm_runtime *runtime = substream->runtime;
	123	struct ct_atc_pcm *apcm;
	124	int err;
	125
	126	apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
35ebf6e7	127	if (!apcm)
8cc72361 WYC	128	return -ENOMEM;
8cc72361 WYC	129
8cc72361 WYC	130	apcm->substream = substream;
8cc72361 WYC	131	apcm->interrupt = ct_atc_pcm_interrupt;
8cc72361 WYC	132	if (IEC958 == substream->pcm->device) {
	133	runtime->hw = ct_spdif_passthru_playback_hw;
	134	atc->spdif_out_passthru(atc, 1);
	135	} else {
	136	runtime->hw = ct_pcm_playback_hw;
	137	if (FRONT == substream->pcm->device)
	138	runtime->hw.channels_max = 8;
	139	}
	140
	141	err = snd_pcm_hw_constraint_integer(runtime,
	142	SNDRV_PCM_HW_PARAM_PERIODS);
	143	if (err < 0) {
	144	kfree(apcm);
	145	return err;
	146	}
	147	err = snd_pcm_hw_constraint_minmax(runtime,
	148	SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
	149	1024, UINT_MAX);
	150	if (err < 0) {
	151	kfree(apcm);
	152	return err;
	153	}
	154
b7bbf876	155	apcm->timer = ct_timer_instance_new(atc->timer, apcm);
fa2b30af JL	156	if (!apcm->timer) {
fa2b30af JL	157	kfree(apcm);
b7bbf876	158	return -ENOMEM;
fa2b30af JL	159	}
	160	runtime->private_data = apcm;
	161	runtime->private_free = ct_atc_pcm_free_substream;
b7bbf876	162
8cc72361 WYC	163	return 0;
	164	}
	165
	166	static int ct_pcm_playback_close(struct snd_pcm_substream *substream)
	167	{
	168	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	169
	170	/* TODO: Notify mixer inactive. */
	171	if (IEC958 == substream->pcm->device)
	172	atc->spdif_out_passthru(atc, 0);
	173
	174	/* The ct_atc_pcm object will be freed by runtime->private_free */
	175
	176	return 0;
	177	}
	178
	179	static int ct_pcm_hw_params(struct snd_pcm_substream *substream,
	180	struct snd_pcm_hw_params *hw_params)
	181	{
a5990dc5 TI	182	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	183	struct ct_atc_pcm *apcm = substream->runtime->private_data;
	184	int err;
	185
	186	err = snd_pcm_lib_malloc_pages(substream,
8cc72361	187	params_buffer_bytes(hw_params));
a5990dc5 TI	188	if (err < 0)
	189	return err;
	190	/* clear previous resources */
	191	atc->pcm_release_resources(atc, apcm);
	192	return err;
8cc72361 WYC	193	}
	194
	195	static int ct_pcm_hw_free(struct snd_pcm_substream *substream)
	196	{
a5990dc5 TI	197	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	198	struct ct_atc_pcm *apcm = substream->runtime->private_data;
	199
	200	/* clear previous resources */
	201	atc->pcm_release_resources(atc, apcm);
8cc72361 WYC	202	/* Free snd-allocated pages */
	203	return snd_pcm_lib_free_pages(substream);
	204	}
	205
8cc72361 WYC	206
	207	static int ct_pcm_playback_prepare(struct snd_pcm_substream *substream)
	208	{
	209	int err;
	210	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	211	struct snd_pcm_runtime *runtime = substream->runtime;
	212	struct ct_atc_pcm *apcm = runtime->private_data;
	213
	214	if (IEC958 == substream->pcm->device)
	215	err = atc->spdif_passthru_playback_prepare(atc, apcm);
	216	else
	217	err = atc->pcm_playback_prepare(atc, apcm);
	218
	219	if (err < 0) {
b3e0afe6	220	printk(KERN_ERR "ctxfi: Preparing pcm playback failed!!!\n");
8cc72361 WYC	221	return err;
	222	}
	223
8cc72361 WYC	224	return 0;
	225	}
	226
	227	static int
	228	ct_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
	229	{
	230	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	231	struct snd_pcm_runtime *runtime = substream->runtime;
	232	struct ct_atc_pcm *apcm = runtime->private_data;
	233
	234	switch (cmd) {
	235	case SNDRV_PCM_TRIGGER_START:
	236	case SNDRV_PCM_TRIGGER_RESUME:
	237	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	238	atc->pcm_playback_start(atc, apcm);
8cc72361 WYC	239	break;
	240	case SNDRV_PCM_TRIGGER_STOP:
	241	case SNDRV_PCM_TRIGGER_SUSPEND:
	242	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
8cc72361 WYC	243	atc->pcm_playback_stop(atc, apcm);
	244	break;
	245	default:
	246	break;
	247	}
	248
	249	return 0;
	250	}
	251
	252	static snd_pcm_uframes_t
	253	ct_pcm_playback_pointer(struct snd_pcm_substream *substream)
	254	{
	255	unsigned long position;
	256	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	257	struct snd_pcm_runtime *runtime = substream->runtime;
	258	struct ct_atc_pcm *apcm = runtime->private_data;
	259
	260	/* Read out playback position */
	261	position = atc->pcm_playback_position(atc, apcm);
	262	position = bytes_to_frames(runtime, position);
af8500bb TI	263	if (position >= runtime->buffer_size)
af8500bb TI	264	position = 0;
8cc72361 WYC	265	return position;
	266	}
	267
	268	/* pcm capture operations */
	269	static int ct_pcm_capture_open(struct snd_pcm_substream *substream)
	270	{
	271	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	272	struct snd_pcm_runtime *runtime = substream->runtime;
	273	struct ct_atc_pcm *apcm;
	274	int err;
	275
	276	apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
35ebf6e7	277	if (!apcm)
8cc72361 WYC	278	return -ENOMEM;
8cc72361 WYC	279
8cc72361	280	apcm->started = 0;
8cc72361 WYC	281	apcm->substream = substream;
8cc72361 WYC	282	apcm->interrupt = ct_atc_pcm_interrupt;
8cc72361 WYC	283	runtime->hw = ct_pcm_capture_hw;
	284	runtime->hw.rate_max = atc->rsr * atc->msr;
	285
	286	err = snd_pcm_hw_constraint_integer(runtime,
	287	SNDRV_PCM_HW_PARAM_PERIODS);
	288	if (err < 0) {
	289	kfree(apcm);
	290	return err;
	291	}
	292	err = snd_pcm_hw_constraint_minmax(runtime,
	293	SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
	294	1024, UINT_MAX);
	295	if (err < 0) {
	296	kfree(apcm);
	297	return err;
	298	}
	299
b7bbf876	300	apcm->timer = ct_timer_instance_new(atc->timer, apcm);
fa2b30af JL	301	if (!apcm->timer) {
fa2b30af JL	302	kfree(apcm);
b7bbf876	303	return -ENOMEM;
fa2b30af JL	304	}
	305	runtime->private_data = apcm;
	306	runtime->private_free = ct_atc_pcm_free_substream;
b7bbf876	307
8cc72361 WYC	308	return 0;
	309	}
	310
	311	static int ct_pcm_capture_close(struct snd_pcm_substream *substream)
	312	{
	313	/* The ct_atc_pcm object will be freed by runtime->private_free */
	314	/* TODO: Notify mixer inactive. */
	315	return 0;
	316	}
	317
	318	static int ct_pcm_capture_prepare(struct snd_pcm_substream *substream)
	319	{
	320	int err;
	321	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	322	struct snd_pcm_runtime *runtime = substream->runtime;
	323	struct ct_atc_pcm *apcm = runtime->private_data;
	324
	325	err = atc->pcm_capture_prepare(atc, apcm);
	326	if (err < 0) {
b3e0afe6	327	printk(KERN_ERR "ctxfi: Preparing pcm capture failed!!!\n");
8cc72361 WYC	328	return err;
	329	}
	330
8cc72361 WYC	331	return 0;
	332	}
	333
	334	static int
	335	ct_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
	336	{
	337	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	338	struct snd_pcm_runtime *runtime = substream->runtime;
	339	struct ct_atc_pcm *apcm = runtime->private_data;
	340
	341	switch (cmd) {
	342	case SNDRV_PCM_TRIGGER_START:
	343	atc->pcm_capture_start(atc, apcm);
8cc72361 WYC	344	break;
8cc72361 WYC	345	case SNDRV_PCM_TRIGGER_STOP:
8cc72361 WYC	346	atc->pcm_capture_stop(atc, apcm);
	347	break;
	348	default:
8cc72361 WYC	349	atc->pcm_capture_stop(atc, apcm);
	350	break;
	351	}
	352
	353	return 0;
	354	}
	355
	356	static snd_pcm_uframes_t
	357	ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
	358	{
	359	unsigned long position;
	360	struct ct_atc *atc = snd_pcm_substream_chip(substream);
	361	struct snd_pcm_runtime *runtime = substream->runtime;
	362	struct ct_atc_pcm *apcm = runtime->private_data;
	363
	364	/* Read out playback position */
	365	position = atc->pcm_capture_position(atc, apcm);
	366	position = bytes_to_frames(runtime, position);
af8500bb TI	367	if (position >= runtime->buffer_size)
af8500bb TI	368	position = 0;
8cc72361 WYC	369	return position;
	370	}
	371
	372	/* PCM operators for playback */
	373	static struct snd_pcm_ops ct_pcm_playback_ops = {
	374	.open = ct_pcm_playback_open,
	375	.close = ct_pcm_playback_close,
	376	.ioctl = snd_pcm_lib_ioctl,
	377	.hw_params = ct_pcm_hw_params,
	378	.hw_free = ct_pcm_hw_free,
	379	.prepare = ct_pcm_playback_prepare,
	380	.trigger = ct_pcm_playback_trigger,
	381	.pointer = ct_pcm_playback_pointer,
c76157d9	382	.page = snd_pcm_sgbuf_ops_page,
8cc72361 WYC	383	};
	384
	385	/* PCM operators for capture */
	386	static struct snd_pcm_ops ct_pcm_capture_ops = {
	387	.open = ct_pcm_capture_open,
	388	.close = ct_pcm_capture_close,
	389	.ioctl = snd_pcm_lib_ioctl,
	390	.hw_params = ct_pcm_hw_params,
	391	.hw_free = ct_pcm_hw_free,
	392	.prepare = ct_pcm_capture_prepare,
	393	.trigger = ct_pcm_capture_trigger,
	394	.pointer = ct_pcm_capture_pointer,
c76157d9	395	.page = snd_pcm_sgbuf_ops_page,
8cc72361 WYC	396	};
8cc72361 WYC	397
8d50cdc1 TI	398	static const struct snd_pcm_chmap_elem surround_map[] = {
8d50cdc1 TI	399	{ .channels = 1,
7e8d613b	400	.map = { SNDRV_CHMAP_UNKNOWN } },
8d50cdc1 TI	401	{ .channels = 2,
	402	.map = { SNDRV_CHMAP_RL, SNDRV_CHMAP_RR } },
	403	{ }
	404	};
	405
	406	static const struct snd_pcm_chmap_elem clfe_map[] = {
	407	{ .channels = 1,
7e8d613b	408	.map = { SNDRV_CHMAP_UNKNOWN } },
8d50cdc1 TI	409	{ .channels = 2,
	410	.map = { SNDRV_CHMAP_FC, SNDRV_CHMAP_LFE } },
	411	{ }
	412	};
	413
	414	static const struct snd_pcm_chmap_elem side_map[] = {
	415	{ .channels = 1,
7e8d613b	416	.map = { SNDRV_CHMAP_UNKNOWN } },
8d50cdc1 TI	417	{ .channels = 2,
	418	.map = { SNDRV_CHMAP_SL, SNDRV_CHMAP_SR } },
	419	{ }
	420	};
	421
8cc72361 WYC	422	/* Create ALSA pcm device */
	423	int ct_alsa_pcm_create(struct ct_atc *atc,
	424	enum CTALSADEVS device,
	425	const char *device_name)
	426	{
	427	struct snd_pcm *pcm;
8d50cdc1 TI	428	const struct snd_pcm_chmap_elem *map;
8d50cdc1 TI	429	int chs;
8cc72361 WYC	430	int err;
8cc72361 WYC	431	int playback_count, capture_count;
8cc72361	432
391e6914	433	playback_count = (IEC958 == device) ? 1 : 256;
8cc72361	434	capture_count = (FRONT == device) ? 1 : 0;
8372d498	435	err = snd_pcm_new(atc->card, "ctxfi", device,
8cc72361 WYC	436	playback_count, capture_count, &pcm);
8cc72361 WYC	437	if (err < 0) {
b3e0afe6	438	printk(KERN_ERR "ctxfi: snd_pcm_new failed!! Err=%d\n", err);
8cc72361 WYC	439	return err;
	440	}
	441
	442	pcm->private_data = atc;
	443	pcm->info_flags = 0;
	444	pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
8372d498	445	strlcpy(pcm->name, device_name, sizeof(pcm->name));
8cc72361 WYC	446
	447	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &ct_pcm_playback_ops);
	448
	449	if (FRONT == device)
	450	snd_pcm_set_ops(pcm,
	451	SNDRV_PCM_STREAM_CAPTURE, &ct_pcm_capture_ops);
	452
c76157d9	453	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
8cc72361 WYC	454	snd_dma_pci_data(atc->pci), 1281024, 1281024);
8cc72361 WYC	455
8d50cdc1 TI	456	chs = 2;
	457	switch (device) {
	458	case FRONT:
	459	chs = 8;
	460	map = snd_pcm_std_chmaps;
	461	break;
	462	case SURROUND:
	463	map = surround_map;
	464	break;
	465	case CLFE:
	466	map = clfe_map;
	467	break;
	468	case SIDE:
	469	map = side_map;
	470	break;
	471	default:
	472	map = snd_pcm_std_chmaps;
	473	break;
	474	}
	475	err = snd_pcm_add_chmap_ctls(pcm, SNDRV_PCM_STREAM_PLAYBACK, map, chs,
	476	0, NULL);
	477	if (err < 0)
	478	return err;
	479
c7561cd8	480	#ifdef CONFIG_PM_SLEEP
29959a09 WYC	481	atc->pcms[device] = pcm;
	482	#endif
	483
8cc72361 WYC	484	return 0;
8cc72361 WYC	485	}