[linux-2.6-block.git] / sound / pcmcia / pdaudiocf / pdaudiocf_pcm.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Driver for Sound Core PDAudioCF soundcards
 *
 * PCM part
 *
 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
 */

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


/*
 * 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;
	}
	mutex_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:
	mutex_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_lib_alloc_vmalloc_32_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_lib_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 const 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 const 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_lib_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;
	pcm->nonatomic = true;
	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
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* Driver for Sound Core PDAudioCF soundcards
	4	*
	5	* PCM part
	6	*
c1017a4c	7	* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	8	*/
1da177e4 LT	9
1da177e4 LT	10	#include <linux/delay.h>
	11	#include <sound/core.h>
	12	#include <sound/asoundef.h>
	13	#include "pdaudiocf.h"
	14
	15
1da177e4 LT	16	/*
	17	* clear the SRAM contents
	18	*/
db131548	19	static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
1da177e4 LT	20	{
	21	int max_loop = 64 * 1024;
	22
	23	while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
	24	if (max_loop-- < 0)
	25	return -EIO;
	26	inw(chip->port + PDAUDIOCF_REG_MD);
	27	}
	28	return 0;
	29	}
	30
	31	/*
	32	* pdacf_pcm_trigger - trigger callback for capture
	33	*/
db131548	34	static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
1da177e4	35	{
db131548 TI	36	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	37	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	38	int inc, ret = 0, rate;
	39	unsigned short mask, val, tmp;
	40
	41	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	42	return -EBUSY;
	43
	44	switch (cmd) {
	45	case SNDRV_PCM_TRIGGER_START:
	46	chip->pcm_hwptr = 0;
	47	chip->pcm_tdone = 0;
	48	/* fall thru */
	49	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
	50	case SNDRV_PCM_TRIGGER_RESUME:
	51	mask = 0;
	52	val = PDAUDIOCF_RECORD;
	53	inc = 1;
	54	rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT\|AK4117_CHECK_NO_RATE);
	55	break;
	56	case SNDRV_PCM_TRIGGER_STOP:
	57	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
	58	case SNDRV_PCM_TRIGGER_SUSPEND:
	59	mask = PDAUDIOCF_RECORD;
	60	val = 0;
	61	inc = -1;
	62	rate = 0;
	63	break;
	64	default:
	65	return -EINVAL;
	66	}
3b73cfe5	67	mutex_lock(&chip->reg_lock);
1da177e4 LT	68	chip->pcm_running += inc;
	69	tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	70	if (chip->pcm_running) {
	71	if ((chip->ak4117->rcs0 & AK4117_UNLCK) \|\| runtime->rate != rate) {
	72	chip->pcm_running -= inc;
	73	ret = -EIO;
	74	goto __end;
	75	}
	76	}
	77	tmp &= ~mask;
	78	tmp \|= val;
	79	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
	80	__end:
3b73cfe5	81	mutex_unlock(&chip->reg_lock);
1da177e4 LT	82	snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
	83	return ret;
	84	}
	85
	86	/*
	87	* pdacf_pcm_hw_params - hw_params callback for playback and capture
	88	*/
db131548 TI	89	static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
db131548 TI	90	struct snd_pcm_hw_params *hw_params)
1da177e4	91	{
d20fb5dc CL	92	return snd_pcm_lib_alloc_vmalloc_32_buffer
d20fb5dc CL	93	(subs, params_buffer_bytes(hw_params));
1da177e4 LT	94	}
	95
	96	/*
	97	* pdacf_pcm_hw_free - hw_free callback for playback and capture
	98	*/
db131548	99	static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
1da177e4	100	{
d20fb5dc	101	return snd_pcm_lib_free_vmalloc_buffer(subs);
1da177e4 LT	102	}
	103
	104	/*
	105	* pdacf_pcm_prepare - prepare callback for playback and capture
	106	*/
db131548	107	static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
1da177e4	108	{
db131548 TI	109	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
db131548 TI	110	struct snd_pcm_runtime *runtime = subs->runtime;
1da177e4 LT	111	u16 val, nval, aval;
	112
	113	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	114	return -EBUSY;
	115
	116	chip->pcm_channels = runtime->channels;
	117
	118	chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
	119	#ifdef SNDRV_LITTLE_ENDIAN
	120	chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
	121	#else
	122	chip->pcm_swab = chip->pcm_little;
	123	#endif
	124
	125	if (snd_pcm_format_unsigned(runtime->format))
	126	chip->pcm_xor = 0x80008000;
	127
	128	if (pdacf_pcm_clear_sram(chip) < 0)
	129	return -EIO;
	130
	131	val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
	132	nval &= ~(PDAUDIOCF_DATAFMT0\|PDAUDIOCF_DATAFMT1);
	133	switch (runtime->format) {
	134	case SNDRV_PCM_FORMAT_S16_LE:
	135	case SNDRV_PCM_FORMAT_S16_BE:
	136	break;
	137	default: /* 24-bit */
	138	nval \|= PDAUDIOCF_DATAFMT0 \| PDAUDIOCF_DATAFMT1;
	139	break;
	140	}
	141	aval = 0;
	142	chip->pcm_sample = 4;
	143	switch (runtime->format) {
	144	case SNDRV_PCM_FORMAT_S16_LE:
	145	case SNDRV_PCM_FORMAT_S16_BE:
	146	aval = AK4117_DIF_16R;
	147	chip->pcm_frame = 2;
	148	chip->pcm_sample = 2;
	149	break;
	150	case SNDRV_PCM_FORMAT_S24_3LE:
	151	case SNDRV_PCM_FORMAT_S24_3BE:
	152	chip->pcm_sample = 3;
93b1fae4	153	/* fall through */
1da177e4 LT	154	default: /* 24-bit */
	155	aval = AK4117_DIF_24R;
	156	chip->pcm_frame = 3;
	157	chip->pcm_xor &= 0xffff0000;
	158	break;
	159	}
	160
	161	if (val != nval) {
	162	snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2\|AK4117_DIF1\|AK4117_DIF0, aval);
	163	pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
	164	}
	165
	166	val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
	167	val &= ~(PDAUDIOCF_IRQLVLEN1);
	168	val \|= PDAUDIOCF_IRQLVLEN0;
	169	pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
	170
	171	chip->pcm_size = runtime->buffer_size;
	172	chip->pcm_period = runtime->period_size;
	173	chip->pcm_area = runtime->dma_area;
	174
	175	return 0;
	176	}
	177
	178
	179	/*
	180	* capture hw information
	181	*/
	182
d9b1b34f	183	static const struct snd_pcm_hardware pdacf_pcm_capture_hw = {
1da177e4 LT	184	.info = (SNDRV_PCM_INFO_MMAP \| SNDRV_PCM_INFO_INTERLEAVED \|
1da177e4 LT	185	SNDRV_PCM_INFO_PAUSE \| SNDRV_PCM_INFO_RESUME \|
2008f137 TI	186	SNDRV_PCM_INFO_MMAP_VALID \|
2008f137 TI	187	SNDRV_PCM_INFO_BATCH),
1da177e4 LT	188	.formats = SNDRV_PCM_FMTBIT_S16_LE \| SNDRV_PCM_FMTBIT_S16_BE \|
	189	SNDRV_PCM_FMTBIT_S24_3LE \| SNDRV_PCM_FMTBIT_S24_3BE \|
	190	SNDRV_PCM_FMTBIT_S32_LE \| SNDRV_PCM_FMTBIT_S32_BE,
	191	.rates = SNDRV_PCM_RATE_32000 \|
	192	SNDRV_PCM_RATE_44100 \|
	193	SNDRV_PCM_RATE_48000 \|
	194	SNDRV_PCM_RATE_88200 \|
	195	SNDRV_PCM_RATE_96000 \|
	196	SNDRV_PCM_RATE_176400 \|
	197	SNDRV_PCM_RATE_192000,
	198	.rate_min = 32000,
	199	.rate_max = 192000,
	200	.channels_min = 1,
	201	.channels_max = 2,
	202	.buffer_bytes_max = (512*1024),
	203	.period_bytes_min = 8*1024,
	204	.period_bytes_max = (64*1024),
	205	.periods_min = 2,
	206	.periods_max = 128,
	207	.fifo_size = 0,
	208	};
	209
	210
	211	/*
	212	* pdacf_pcm_capture_open - open callback for capture
	213	*/
db131548	214	static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
1da177e4	215	{
db131548 TI	216	struct snd_pcm_runtime *runtime = subs->runtime;
db131548 TI	217	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	218
	219	if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
	220	return -EBUSY;
	221
	222	runtime->hw = pdacf_pcm_capture_hw;
	223	runtime->private_data = chip;
	224	chip->pcm_substream = subs;
	225
	226	return 0;
	227	}
	228
	229	/*
	230	* pdacf_pcm_capture_close - close callback for capture
	231	*/
db131548	232	static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
1da177e4	233	{
db131548	234	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	235
	236	if (!chip)
	237	return -EINVAL;
	238	pdacf_reinit(chip, 0);
	239	chip->pcm_substream = NULL;
	240	return 0;
	241	}
	242
	243
	244	/*
	245	* pdacf_pcm_capture_pointer - pointer callback for capture
	246	*/
db131548	247	static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
1da177e4	248	{
db131548	249	struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
1da177e4 LT	250	return chip->pcm_hwptr;
	251	}
	252
	253	/*
	254	* operators for PCM capture
	255	*/
e0c24d8b	256	static const struct snd_pcm_ops pdacf_pcm_capture_ops = {
1da177e4 LT	257	.open = pdacf_pcm_capture_open,
	258	.close = pdacf_pcm_capture_close,
	259	.ioctl = snd_pcm_lib_ioctl,
	260	.hw_params = pdacf_pcm_hw_params,
	261	.hw_free = pdacf_pcm_hw_free,
	262	.prepare = pdacf_pcm_prepare,
	263	.trigger = pdacf_pcm_trigger,
	264	.pointer = pdacf_pcm_capture_pointer,
d20fb5dc	265	.page = snd_pcm_lib_get_vmalloc_page,
1da177e4 LT	266	};
	267
	268
1da177e4 LT	269	/*
	270	* snd_pdacf_pcm_new - create and initialize a pcm
	271	*/
db131548	272	int snd_pdacf_pcm_new(struct snd_pdacf *chip)
1da177e4	273	{
db131548	274	struct snd_pcm *pcm;
1da177e4 LT	275	int err;
	276
	277	err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
	278	if (err < 0)
	279	return err;
	280
	281	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
	282
	283	pcm->private_data = chip;
1da177e4	284	pcm->info_flags = 0;
3b73cfe5	285	pcm->nonatomic = true;
1da177e4 LT	286	strcpy(pcm->name, chip->card->shortname);
	287	chip->pcm = pcm;
	288
	289	err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
	290	if (err < 0)
	291	return err;
	292
	293	return 0;
	294	}