[net-next-2.6.git] / sound / pcmcia / pdaudiocf / pdaudiocf_pcm.c

/*
 * Driver for Sound Core PDAudioCF soundcards
 *
 * PCM part
 *
 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/asoundef.h>
#include "pdaudiocf.h"


/*
 * we use a vmalloc'ed (sg-)buffer
 */

/* get the physical page pointer on the given offset */
static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs, unsigned long offset)
{
	void *pageptr = subs->runtime->dma_area + offset;
	return vmalloc_to_page(pageptr);
}

/*
 * hw_params callback
 * NOTE: this may be called not only once per pcm open!
 */
static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
{
	struct snd_pcm_runtime *runtime = subs->runtime;
	if (runtime->dma_area) {
		if (runtime->dma_bytes >= size)
			return 0; /* already enough large */
		vfree(runtime->dma_area);
	}
	runtime->dma_area = vmalloc_32_user(size);
	if (! runtime->dma_area)
		return -ENOMEM;
	runtime->dma_bytes = size;
	return 0;
}

/*
 * hw_free callback
 * NOTE: this may be called not only once per pcm open!
 */
static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
{
	struct snd_pcm_runtime *runtime = subs->runtime;

	vfree(runtime->dma_area);
	runtime->dma_area = NULL;
	return 0;
}

/*
 * clear the SRAM contents
 */
static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
{
	int max_loop = 64 * 1024;

	while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
		if (max_loop-- < 0)
			return -EIO;
		inw(chip->port + PDAUDIOCF_REG_MD);
	}
	return 0;
}

/*
 * pdacf_pcm_trigger - trigger callback for capture
 */
static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
{
	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
	struct snd_pcm_runtime *runtime = subs->runtime;
	int inc, ret = 0, rate;
	unsigned short mask, val, tmp;

	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
		return -EBUSY;

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		chip->pcm_hwptr = 0;
		chip->pcm_tdone = 0;
		/* fall thru */
	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	case SNDRV_PCM_TRIGGER_RESUME:
		mask = 0;
		val = PDAUDIOCF_RECORD;
		inc = 1;
		rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
		break;
	case SNDRV_PCM_TRIGGER_STOP:
	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	case SNDRV_PCM_TRIGGER_SUSPEND:
		mask = PDAUDIOCF_RECORD;
		val = 0;
		inc = -1;
		rate = 0;
		break;
	default:
		return -EINVAL;
	}
	spin_lock(&chip->reg_lock);
	chip->pcm_running += inc;
	tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	if (chip->pcm_running) {
		if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
			chip->pcm_running -= inc;
			ret = -EIO;
			goto __end;
		}
	}
	tmp &= ~mask;
	tmp |= val;
	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
      __end:
	spin_unlock(&chip->reg_lock);
	snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
	return ret;
}

/*
 * pdacf_pcm_hw_params - hw_params callback for playback and capture
 */
static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
				     struct snd_pcm_hw_params *hw_params)
{
	return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
}

/*
 * pdacf_pcm_hw_free - hw_free callback for playback and capture
 */
static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
{
	return snd_pcm_free_vmalloc_buffer(subs);
}

/*
 * pdacf_pcm_prepare - prepare callback for playback and capture
 */
static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
{
	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
	struct snd_pcm_runtime *runtime = subs->runtime;
	u16 val, nval, aval;

	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
		return -EBUSY;

	chip->pcm_channels = runtime->channels;

	chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
#ifdef SNDRV_LITTLE_ENDIAN
	chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
#else
	chip->pcm_swab = chip->pcm_little;
#endif

	if (snd_pcm_format_unsigned(runtime->format))
		chip->pcm_xor = 0x80008000;

	if (pdacf_pcm_clear_sram(chip) < 0)
		return -EIO;
	
	val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
	switch (runtime->format) {
	case SNDRV_PCM_FORMAT_S16_LE:
	case SNDRV_PCM_FORMAT_S16_BE:
		break;
	default: /* 24-bit */
		nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
		break;
	}
	aval = 0;
	chip->pcm_sample = 4;
	switch (runtime->format) {
	case SNDRV_PCM_FORMAT_S16_LE:
	case SNDRV_PCM_FORMAT_S16_BE:
		aval = AK4117_DIF_16R;
		chip->pcm_frame = 2;
		chip->pcm_sample = 2;
		break;
	case SNDRV_PCM_FORMAT_S24_3LE:
	case SNDRV_PCM_FORMAT_S24_3BE:
		chip->pcm_sample = 3;
		/* fall through */
	default: /* 24-bit */
		aval = AK4117_DIF_24R;
		chip->pcm_frame = 3;
		chip->pcm_xor &= 0xffff0000;
		break;
	}

	if (val != nval) {
		snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
		pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
	}

	val = pdacf_reg_read(chip,  PDAUDIOCF_REG_IER);
	val &= ~(PDAUDIOCF_IRQLVLEN1);
	val |= PDAUDIOCF_IRQLVLEN0;
	pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);

	chip->pcm_size = runtime->buffer_size;
	chip->pcm_period = runtime->period_size;
	chip->pcm_area = runtime->dma_area;

	return 0;
}


/*
 * capture hw information
 */

static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
				 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
				 SNDRV_PCM_INFO_MMAP_VALID |
				 SNDRV_PCM_INFO_BATCH),
	.formats =		SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
				SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
				SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
	.rates =		SNDRV_PCM_RATE_32000 |
				SNDRV_PCM_RATE_44100 |
				SNDRV_PCM_RATE_48000 |
				SNDRV_PCM_RATE_88200 |
				SNDRV_PCM_RATE_96000 |
				SNDRV_PCM_RATE_176400 |
				SNDRV_PCM_RATE_192000,
	.rate_min =		32000,
	.rate_max =		192000,
	.channels_min =		1,
	.channels_max =		2,
	.buffer_bytes_max =	(512*1024),
	.period_bytes_min =	8*1024,
	.period_bytes_max =	(64*1024),
	.periods_min =		2,
	.periods_max =		128,
	.fifo_size =		0,
};


/*
 * pdacf_pcm_capture_open - open callback for capture
 */
static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
{
	struct snd_pcm_runtime *runtime = subs->runtime;
	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);

	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
		return -EBUSY;

	runtime->hw = pdacf_pcm_capture_hw;
	runtime->private_data = chip;
	chip->pcm_substream = subs;

	return 0;
}

/*
 * pdacf_pcm_capture_close - close callback for capture
 */
static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
{
	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);

	if (!chip)
		return -EINVAL;
	pdacf_reinit(chip, 0);
	chip->pcm_substream = NULL;
	return 0;
}


/*
 * pdacf_pcm_capture_pointer - pointer callback for capture
 */
static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
{
	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
	return chip->pcm_hwptr;
}

/*
 * operators for PCM capture
 */
static struct snd_pcm_ops pdacf_pcm_capture_ops = {
	.open =		pdacf_pcm_capture_open,
	.close =	pdacf_pcm_capture_close,
	.ioctl =	snd_pcm_lib_ioctl,
	.hw_params =	pdacf_pcm_hw_params,
	.hw_free =	pdacf_pcm_hw_free,
	.prepare =	pdacf_pcm_prepare,
	.trigger =	pdacf_pcm_trigger,
	.pointer =	pdacf_pcm_capture_pointer,
	.page =		snd_pcm_get_vmalloc_page,
};


/*
 * snd_pdacf_pcm_new - create and initialize a pcm
 */
int snd_pdacf_pcm_new(struct snd_pdacf *chip)
{
	struct snd_pcm *pcm;
	int err;

	err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
	if (err < 0)
		return err;
		
	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);

	pcm->private_data = chip;
	pcm->info_flags = 0;
	strcpy(pcm->name, chip->card->shortname);
	chip->pcm = pcm;
	
	err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
	if (err < 0)
		return err;

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Driver for Sound Core PDAudioCF soundcards
	3	*
	4	* PCM part
	5	*
c1017a4c	6	* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	21	*/
	22
1da177e4 LT	23	#include <linux/slab.h>
	24	#include <linux/vmalloc.h>
	25	#include <linux/delay.h>
	26	#include <sound/core.h>
	27	#include <sound/asoundef.h>
	28	#include "pdaudiocf.h"
	29
	30
	31	/*
	32	* we use a vmalloc'ed (sg-)buffer
	33	*/
	34
	35	/* get the physical page pointer on the given offset */
db131548	36	static struct page snd_pcm_get_vmalloc_page(struct snd_pcm_substream subs, unsigned long offset)
1da177e4 LT	37	{
	38	void *pageptr = subs->runtime->dma_area + offset;
	39	return vmalloc_to_page(pageptr);
	40	}
	41
	42	/*
	43	* hw_params callback
	44	* NOTE: this may be called not only once per pcm open!
	45	*/
db131548	46	static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
1da177e4	47	{
db131548	48	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	49	if (runtime->dma_area) {
	50	if (runtime->dma_bytes >= size)
	51	return 0; /* already enough large */
b1d5776d	52	vfree(runtime->dma_area);
1da177e4	53	}
3e85fd61	54	runtime->dma_area = vmalloc_32_user(size);
1da177e4 LT	55	if (! runtime->dma_area)
	56	return -ENOMEM;
	57	runtime->dma_bytes = size;
	58	return 0;
	59	}
	60
	61	/*
	62	* hw_free callback
	63	* NOTE: this may be called not only once per pcm open!
	64	*/
db131548	65	static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
1da177e4	66	{
db131548	67	struct snd_pcm_runtime *runtime = subs->runtime;
2a578f3b JJ	68
	69	vfree(runtime->dma_area);
	70	runtime->dma_area = NULL;
1da177e4 LT	71	return 0;
	72	}
	73
	74	/*
	75	* clear the SRAM contents
	76	*/
db131548	77	static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
1da177e4 LT	78	{
	79	int max_loop = 64 * 1024;
	80
	81	while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
	82	if (max_loop-- < 0)
	83	return -EIO;
	84	inw(chip->port + PDAUDIOCF_REG_MD);
	85	}
	86	return 0;
	87	}
	88
	89	/*
	90	* pdacf_pcm_trigger - trigger callback for capture
	91	*/
db131548	92	static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
1da177e4	93	{
db131548 TI	94	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	95	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	96	int inc, ret = 0, rate;
	97	unsigned short mask, val, tmp;
	98
	99	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	100	return -EBUSY;
	101
	102	switch (cmd) {
	103	case SNDRV_PCM_TRIGGER_START:
	104	chip->pcm_hwptr = 0;
	105	chip->pcm_tdone = 0;
	106	/* fall thru */
	107	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	108	case SNDRV_PCM_TRIGGER_RESUME:
	109	mask = 0;
	110	val = PDAUDIOCF_RECORD;
	111	inc = 1;
	112	rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT\|AK4117_CHECK_NO_RATE);
	113	break;
	114	case SNDRV_PCM_TRIGGER_STOP:
	115	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	116	case SNDRV_PCM_TRIGGER_SUSPEND:
	117	mask = PDAUDIOCF_RECORD;
	118	val = 0;
	119	inc = -1;
	120	rate = 0;
	121	break;
	122	default:
	123	return -EINVAL;
	124	}
	125	spin_lock(&chip->reg_lock);
	126	chip->pcm_running += inc;
	127	tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	128	if (chip->pcm_running) {
	129	if ((chip->ak4117->rcs0 & AK4117_UNLCK) \|\| runtime->rate != rate) {
	130	chip->pcm_running -= inc;
	131	ret = -EIO;
	132	goto __end;
	133	}
	134	}
	135	tmp &= ~mask;
	136	tmp \|= val;
	137	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
	138	__end:
	139	spin_unlock(&chip->reg_lock);
	140	snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
	141	return ret;
	142	}
	143
	144	/*
	145	* pdacf_pcm_hw_params - hw_params callback for playback and capture
	146	*/
db131548 TI	147	static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
db131548 TI	148	struct snd_pcm_hw_params *hw_params)
1da177e4 LT	149	{
	150	return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
	151	}
	152
	153	/*
	154	* pdacf_pcm_hw_free - hw_free callback for playback and capture
	155	*/
db131548	156	static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
1da177e4 LT	157	{
	158	return snd_pcm_free_vmalloc_buffer(subs);
	159	}
	160
	161	/*
	162	* pdacf_pcm_prepare - prepare callback for playback and capture
	163	*/
db131548	164	static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
1da177e4	165	{
db131548 TI	166	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	167	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	168	u16 val, nval, aval;
	169
	170	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	171	return -EBUSY;
	172
	173	chip->pcm_channels = runtime->channels;
	174
	175	chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
	176	#ifdef SNDRV_LITTLE_ENDIAN
	177	chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
	178	#else
	179	chip->pcm_swab = chip->pcm_little;
	180	#endif
	181
	182	if (snd_pcm_format_unsigned(runtime->format))
	183	chip->pcm_xor = 0x80008000;
	184
	185	if (pdacf_pcm_clear_sram(chip) < 0)
	186	return -EIO;
	187
	188	val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	189	nval &= ~(PDAUDIOCF_DATAFMT0\|PDAUDIOCF_DATAFMT1);
	190	switch (runtime->format) {
	191	case SNDRV_PCM_FORMAT_S16_LE:
	192	case SNDRV_PCM_FORMAT_S16_BE:
	193	break;
	194	default: /* 24-bit */
	195	nval \|= PDAUDIOCF_DATAFMT0 \| PDAUDIOCF_DATAFMT1;
	196	break;
	197	}
	198	aval = 0;
	199	chip->pcm_sample = 4;
	200	switch (runtime->format) {
	201	case SNDRV_PCM_FORMAT_S16_LE:
	202	case SNDRV_PCM_FORMAT_S16_BE:
	203	aval = AK4117_DIF_16R;
	204	chip->pcm_frame = 2;
	205	chip->pcm_sample = 2;
	206	break;
	207	case SNDRV_PCM_FORMAT_S24_3LE:
	208	case SNDRV_PCM_FORMAT_S24_3BE:
	209	chip->pcm_sample = 3;
93b1fae4	210	/* fall through */
1da177e4 LT	211	default: /* 24-bit */
	212	aval = AK4117_DIF_24R;
	213	chip->pcm_frame = 3;
	214	chip->pcm_xor &= 0xffff0000;
	215	break;
	216	}
	217
	218	if (val != nval) {
	219	snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2\|AK4117_DIF1\|AK4117_DIF0, aval);
	220	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
	221	}
	222
	223	val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
	224	val &= ~(PDAUDIOCF_IRQLVLEN1);
	225	val \|= PDAUDIOCF_IRQLVLEN0;
	226	pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
	227
	228	chip->pcm_size = runtime->buffer_size;
	229	chip->pcm_period = runtime->period_size;
	230	chip->pcm_area = runtime->dma_area;
	231
	232	return 0;
	233	}
	234
	235
	236	/*
	237	* capture hw information
	238	*/
	239
db131548	240	static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
1da177e4 LT	241	.info = (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
1da177e4 LT	242	SNDRV_PCM_INFO_PAUSE \| SNDRV_PCM_INFO_RESUME \|
2008f137 TI	243	SNDRV_PCM_INFO_MMAP_VALID \|
2008f137 TI	244	SNDRV_PCM_INFO_BATCH),
1da177e4 LT	245	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \|
	246	SNDRV_PCM_FMTBIT_S24_3LE \| SNDRV_PCM_FMTBIT_S24_3BE \|
	247	SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S32_BE,
	248	.rates = SNDRV_PCM_RATE_32000 \|
	249	SNDRV_PCM_RATE_44100 \|
	250	SNDRV_PCM_RATE_48000 \|
	251	SNDRV_PCM_RATE_88200 \|
	252	SNDRV_PCM_RATE_96000 \|
	253	SNDRV_PCM_RATE_176400 \|
	254	SNDRV_PCM_RATE_192000,
	255	.rate_min = 32000,
	256	.rate_max = 192000,
	257	.channels_min = 1,
	258	.channels_max = 2,
	259	.buffer_bytes_max = (512*1024),
	260	.period_bytes_min = 8*1024,
	261	.period_bytes_max = (64*1024),
	262	.periods_min = 2,
	263	.periods_max = 128,
	264	.fifo_size = 0,
	265	};
	266
	267
	268	/*
	269	* pdacf_pcm_capture_open - open callback for capture
	270	*/
db131548	271	static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
1da177e4	272	{
db131548 TI	273	struct snd_pcm_runtime *runtime = subs->runtime;
db131548 TI	274	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	275
	276	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	277	return -EBUSY;
	278
	279	runtime->hw = pdacf_pcm_capture_hw;
	280	runtime->private_data = chip;
	281	chip->pcm_substream = subs;
	282
	283	return 0;
	284	}
	285
	286	/*
	287	* pdacf_pcm_capture_close - close callback for capture
	288	*/
db131548	289	static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
1da177e4	290	{
db131548	291	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	292
	293	if (!chip)
	294	return -EINVAL;
	295	pdacf_reinit(chip, 0);
	296	chip->pcm_substream = NULL;
	297	return 0;
	298	}
	299
	300
	301	/*
	302	* pdacf_pcm_capture_pointer - pointer callback for capture
	303	*/
db131548	304	static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
1da177e4	305	{
db131548	306	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	307	return chip->pcm_hwptr;
	308	}
	309
	310	/*
	311	* operators for PCM capture
	312	*/
db131548	313	static struct snd_pcm_ops pdacf_pcm_capture_ops = {
1da177e4 LT	314	.open = pdacf_pcm_capture_open,
	315	.close = pdacf_pcm_capture_close,
	316	.ioctl = snd_pcm_lib_ioctl,
	317	.hw_params = pdacf_pcm_hw_params,
	318	.hw_free = pdacf_pcm_hw_free,
	319	.prepare = pdacf_pcm_prepare,
	320	.trigger = pdacf_pcm_trigger,
	321	.pointer = pdacf_pcm_capture_pointer,
	322	.page = snd_pcm_get_vmalloc_page,
	323	};
	324
	325
1da177e4 LT	326	/*
	327	* snd_pdacf_pcm_new - create and initialize a pcm
	328	*/
db131548	329	int snd_pdacf_pcm_new(struct snd_pdacf *chip)
1da177e4	330	{
db131548	331	struct snd_pcm *pcm;
1da177e4 LT	332	int err;
	333
	334	err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
	335	if (err < 0)
	336	return err;
	337
	338	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
	339
	340	pcm->private_data = chip;
1da177e4 LT	341	pcm->info_flags = 0;
	342	strcpy(pcm->name, chip->card->shortname);
	343	chip->pcm = pcm;
	344
	345	err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
	346	if (err < 0)
	347	return err;
	348
	349	return 0;
	350	}