[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@suse.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 <sound/driver.h>
#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(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;
	if (runtime->dma_area) {
		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 trough */
	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),
	.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	*
	6	* Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz>
	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
	23	#include <sound/driver.h>
	24	#include <linux/slab.h>
	25	#include <linux/vmalloc.h>
	26	#include <linux/delay.h>
	27	#include <sound/core.h>
	28	#include <sound/asoundef.h>
	29	#include "pdaudiocf.h"
	30
	31
	32	/*
	33	* we use a vmalloc'ed (sg-)buffer
	34	*/
	35
	36	/* get the physical page pointer on the given offset */
db131548	37	static struct page snd_pcm_get_vmalloc_page(struct snd_pcm_substream subs, unsigned long offset)
1da177e4 LT	38	{
	39	void *pageptr = subs->runtime->dma_area + offset;
	40	return vmalloc_to_page(pageptr);
	41	}
	42
	43	/*
	44	* hw_params callback
	45	* NOTE: this may be called not only once per pcm open!
	46	*/
db131548	47	static int snd_pcm_alloc_vmalloc_buffer(struct snd_pcm_substream *subs, size_t size)
1da177e4	48	{
db131548	49	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	50	if (runtime->dma_area) {
	51	if (runtime->dma_bytes >= size)
	52	return 0; /* already enough large */
b1d5776d	53	vfree(runtime->dma_area);
1da177e4	54	}
b1d5776d	55	runtime->dma_area = vmalloc_32(size);
1da177e4 LT	56	if (! runtime->dma_area)
	57	return -ENOMEM;
	58	runtime->dma_bytes = size;
	59	return 0;
	60	}
	61
	62	/*
	63	* hw_free callback
	64	* NOTE: this may be called not only once per pcm open!
	65	*/
db131548	66	static int snd_pcm_free_vmalloc_buffer(struct snd_pcm_substream *subs)
1da177e4	67	{
db131548	68	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4	69	if (runtime->dma_area) {
b1d5776d	70	vfree(runtime->dma_area);
1da177e4 LT	71	runtime->dma_area = NULL;
	72	}
	73	return 0;
	74	}
	75
	76	/*
	77	* clear the SRAM contents
	78	*/
db131548	79	static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
1da177e4 LT	80	{
	81	int max_loop = 64 * 1024;
	82
	83	while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
	84	if (max_loop-- < 0)
	85	return -EIO;
	86	inw(chip->port + PDAUDIOCF_REG_MD);
	87	}
	88	return 0;
	89	}
	90
	91	/*
	92	* pdacf_pcm_trigger - trigger callback for capture
	93	*/
db131548	94	static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
1da177e4	95	{
db131548 TI	96	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	97	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	98	int inc, ret = 0, rate;
	99	unsigned short mask, val, tmp;
	100
	101	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	102	return -EBUSY;
	103
	104	switch (cmd) {
	105	case SNDRV_PCM_TRIGGER_START:
	106	chip->pcm_hwptr = 0;
	107	chip->pcm_tdone = 0;
	108	/* fall thru */
	109	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	110	case SNDRV_PCM_TRIGGER_RESUME:
	111	mask = 0;
	112	val = PDAUDIOCF_RECORD;
	113	inc = 1;
	114	rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT\|AK4117_CHECK_NO_RATE);
	115	break;
	116	case SNDRV_PCM_TRIGGER_STOP:
	117	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	118	case SNDRV_PCM_TRIGGER_SUSPEND:
	119	mask = PDAUDIOCF_RECORD;
	120	val = 0;
	121	inc = -1;
	122	rate = 0;
	123	break;
	124	default:
	125	return -EINVAL;
	126	}
	127	spin_lock(&chip->reg_lock);
	128	chip->pcm_running += inc;
	129	tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	130	if (chip->pcm_running) {
	131	if ((chip->ak4117->rcs0 & AK4117_UNLCK) \|\| runtime->rate != rate) {
	132	chip->pcm_running -= inc;
	133	ret = -EIO;
	134	goto __end;
	135	}
	136	}
	137	tmp &= ~mask;
	138	tmp \|= val;
	139	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
	140	__end:
	141	spin_unlock(&chip->reg_lock);
	142	snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
	143	return ret;
	144	}
	145
	146	/*
	147	* pdacf_pcm_hw_params - hw_params callback for playback and capture
	148	*/
db131548 TI	149	static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
db131548 TI	150	struct snd_pcm_hw_params *hw_params)
1da177e4 LT	151	{
	152	return snd_pcm_alloc_vmalloc_buffer(subs, params_buffer_bytes(hw_params));
	153	}
	154
	155	/*
	156	* pdacf_pcm_hw_free - hw_free callback for playback and capture
	157	*/
db131548	158	static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
1da177e4 LT	159	{
	160	return snd_pcm_free_vmalloc_buffer(subs);
	161	}
	162
	163	/*
	164	* pdacf_pcm_prepare - prepare callback for playback and capture
	165	*/
db131548	166	static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
1da177e4	167	{
db131548 TI	168	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	169	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	170	u16 val, nval, aval;
	171
	172	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	173	return -EBUSY;
	174
	175	chip->pcm_channels = runtime->channels;
	176
	177	chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
	178	#ifdef SNDRV_LITTLE_ENDIAN
	179	chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
	180	#else
	181	chip->pcm_swab = chip->pcm_little;
	182	#endif
	183
	184	if (snd_pcm_format_unsigned(runtime->format))
	185	chip->pcm_xor = 0x80008000;
	186
	187	if (pdacf_pcm_clear_sram(chip) < 0)
	188	return -EIO;
	189
	190	val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	191	nval &= ~(PDAUDIOCF_DATAFMT0\|PDAUDIOCF_DATAFMT1);
	192	switch (runtime->format) {
	193	case SNDRV_PCM_FORMAT_S16_LE:
	194	case SNDRV_PCM_FORMAT_S16_BE:
	195	break;
	196	default: /* 24-bit */
	197	nval \|= PDAUDIOCF_DATAFMT0 \| PDAUDIOCF_DATAFMT1;
	198	break;
	199	}
	200	aval = 0;
	201	chip->pcm_sample = 4;
	202	switch (runtime->format) {
	203	case SNDRV_PCM_FORMAT_S16_LE:
	204	case SNDRV_PCM_FORMAT_S16_BE:
	205	aval = AK4117_DIF_16R;
	206	chip->pcm_frame = 2;
	207	chip->pcm_sample = 2;
	208	break;
	209	case SNDRV_PCM_FORMAT_S24_3LE:
	210	case SNDRV_PCM_FORMAT_S24_3BE:
	211	chip->pcm_sample = 3;
	212	/* fall trough */
	213	default: /* 24-bit */
	214	aval = AK4117_DIF_24R;
	215	chip->pcm_frame = 3;
	216	chip->pcm_xor &= 0xffff0000;
	217	break;
	218	}
	219
	220	if (val != nval) {
	221	snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2\|AK4117_DIF1\|AK4117_DIF0, aval);
	222	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
	223	}
	224
	225	val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
	226	val &= ~(PDAUDIOCF_IRQLVLEN1);
	227	val \|= PDAUDIOCF_IRQLVLEN0;
	228	pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
	229
	230	chip->pcm_size = runtime->buffer_size;
	231	chip->pcm_period = runtime->period_size;
	232	chip->pcm_area = runtime->dma_area;
	233
234	return 0;
235	}
236
237
238	/*
239	* capture hw information
240	*/
241
db131548	242	static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
1da177e4 LT	243	.info = (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
	244	SNDRV_PCM_INFO_PAUSE \| SNDRV_PCM_INFO_RESUME \|
	245	SNDRV_PCM_INFO_MMAP_VALID),
	246	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \|
	247	SNDRV_PCM_FMTBIT_S24_3LE \| SNDRV_PCM_FMTBIT_S24_3BE \|
	248	SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S32_BE,
	249	.rates = SNDRV_PCM_RATE_32000 \|
	250	SNDRV_PCM_RATE_44100 \|
	251	SNDRV_PCM_RATE_48000 \|
	252	SNDRV_PCM_RATE_88200 \|
	253	SNDRV_PCM_RATE_96000 \|
	254	SNDRV_PCM_RATE_176400 \|
	255	SNDRV_PCM_RATE_192000,
	256	.rate_min = 32000,
	257	.rate_max = 192000,
	258	.channels_min = 1,
	259	.channels_max = 2,
	260	.buffer_bytes_max = (512*1024),
	261	.period_bytes_min = 8*1024,
	262	.period_bytes_max = (64*1024),
	263	.periods_min = 2,
	264	.periods_max = 128,
	265	.fifo_size = 0,
	266	};
	267
	268
	269	/*
	270	* pdacf_pcm_capture_open - open callback for capture
	271	*/
db131548	272	static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
1da177e4	273	{
db131548 TI	274	struct snd_pcm_runtime *runtime = subs->runtime;
db131548 TI	275	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	276
	277	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	278	return -EBUSY;
	279
	280	runtime->hw = pdacf_pcm_capture_hw;
	281	runtime->private_data = chip;
	282	chip->pcm_substream = subs;
	283
	284	return 0;
	285	}
	286
	287	/*
	288	* pdacf_pcm_capture_close - close callback for capture
	289	*/
db131548	290	static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
1da177e4	291	{
db131548	292	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	293
	294	if (!chip)
	295	return -EINVAL;
	296	pdacf_reinit(chip, 0);
	297	chip->pcm_substream = NULL;
	298	return 0;
	299	}
	300
	301
	302	/*
	303	* pdacf_pcm_capture_pointer - pointer callback for capture
	304	*/
db131548	305	static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
1da177e4	306	{
db131548	307	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	308	return chip->pcm_hwptr;
	309	}
	310
	311	/*
	312	* operators for PCM capture
	313	*/
db131548	314	static struct snd_pcm_ops pdacf_pcm_capture_ops = {
1da177e4 LT	315	.open = pdacf_pcm_capture_open,
	316	.close = pdacf_pcm_capture_close,
	317	.ioctl = snd_pcm_lib_ioctl,
	318	.hw_params = pdacf_pcm_hw_params,
	319	.hw_free = pdacf_pcm_hw_free,
	320	.prepare = pdacf_pcm_prepare,
	321	.trigger = pdacf_pcm_trigger,
	322	.pointer = pdacf_pcm_capture_pointer,
	323	.page = snd_pcm_get_vmalloc_page,
	324	};
	325
	326
1da177e4 LT	327	/*
	328	* snd_pdacf_pcm_new - create and initialize a pcm
	329	*/
db131548	330	int snd_pdacf_pcm_new(struct snd_pdacf *chip)
1da177e4	331	{
db131548	332	struct snd_pcm *pcm;
1da177e4 LT	333	int err;
	334
	335	err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
	336	if (err < 0)
	337	return err;
	338
	339	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
	340
	341	pcm->private_data = chip;
1da177e4 LT	342	pcm->info_flags = 0;
	343	strcpy(pcm->name, chip->card->shortname);
	344	chip->pcm = pcm;
	345
	346	err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
	347	if (err < 0)
	348	return err;
	349
	350	return 0;
	351	}