[linux-2.6-block.git] / drivers / media / pci / solo6x10 / solo6x10-g723.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>
 *
 * Original author:
 * Ben Collins <bcollins@ubuntu.com>
 *
 * Additional work by:
 * John Brooks <john.brooks@bluecherry.net>
 */

#include <linux/kernel.h>
#include <linux/mempool.h>
#include <linux/poll.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/module.h>
#include <linux/slab.h>

#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/control.h>

#include "solo6x10.h"
#include "solo6x10-tw28.h"

#define G723_FDMA_PAGES		32
#define G723_PERIOD_BYTES	48
#define G723_PERIOD_BLOCK	1024
#define G723_FRAMES_PER_PAGE	48

/* Sets up channels 16-19 for decoding and 0-15 for encoding */
#define OUTMODE_MASK		0x300

#define SAMPLERATE		8000
#define BITRATE			25

/* The solo writes to 1k byte pages, 32 pages, in the dma. Each 1k page
 * is broken down to 20 * 48 byte regions (one for each channel possible)
 * with the rest of the page being dummy data. */
#define PERIODS			G723_FDMA_PAGES
#define G723_INTR_ORDER		4 /* 0 - 4 */

struct solo_snd_pcm {
	int				on;
	spinlock_t			lock;
	struct solo_dev			*solo_dev;
	u8				*g723_buf;
	dma_addr_t			g723_dma;
};

static void solo_g723_config(struct solo_dev *solo_dev)
{
	int clk_div;

	clk_div = (solo_dev->clock_mhz * 1000000)
		/ (SAMPLERATE * (BITRATE * 2) * 2);

	solo_reg_write(solo_dev, SOLO_AUDIO_SAMPLE,
		       SOLO_AUDIO_BITRATE(BITRATE)
		       | SOLO_AUDIO_CLK_DIV(clk_div));

	solo_reg_write(solo_dev, SOLO_AUDIO_FDMA_INTR,
		       SOLO_AUDIO_FDMA_INTERVAL(1)
		       | SOLO_AUDIO_INTR_ORDER(G723_INTR_ORDER)
		       | SOLO_AUDIO_FDMA_BASE(SOLO_G723_EXT_ADDR(solo_dev) >> 16));

	solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL,
		       SOLO_AUDIO_ENABLE
		       | SOLO_AUDIO_I2S_MODE
		       | SOLO_AUDIO_I2S_MULTI(3)
		       | SOLO_AUDIO_MODE(OUTMODE_MASK));
}

void solo_g723_isr(struct solo_dev *solo_dev)
{
	struct snd_pcm_str *pstr =
		&solo_dev->snd_pcm->streams[SNDRV_PCM_STREAM_CAPTURE];
	struct snd_pcm_substream *ss;
	struct solo_snd_pcm *solo_pcm;

	for (ss = pstr->substream; ss != NULL; ss = ss->next) {
		if (snd_pcm_substream_chip(ss) == NULL)
			continue;

		/* This means open() hasn't been called on this one */
		if (snd_pcm_substream_chip(ss) == solo_dev)
			continue;

		/* Haven't triggered a start yet */
		solo_pcm = snd_pcm_substream_chip(ss);
		if (!solo_pcm->on)
			continue;

		snd_pcm_period_elapsed(ss);
	}
}

static const struct snd_pcm_hardware snd_solo_pcm_hw = {
	.info			= (SNDRV_PCM_INFO_MMAP |
				   SNDRV_PCM_INFO_INTERLEAVED |
				   SNDRV_PCM_INFO_BLOCK_TRANSFER |
				   SNDRV_PCM_INFO_MMAP_VALID),
	.formats		= SNDRV_PCM_FMTBIT_U8,
	.rates			= SNDRV_PCM_RATE_8000,
	.rate_min		= SAMPLERATE,
	.rate_max		= SAMPLERATE,
	.channels_min		= 1,
	.channels_max		= 1,
	.buffer_bytes_max	= G723_PERIOD_BYTES * PERIODS,
	.period_bytes_min	= G723_PERIOD_BYTES,
	.period_bytes_max	= G723_PERIOD_BYTES,
	.periods_min		= PERIODS,
	.periods_max		= PERIODS,
};

static int snd_solo_pcm_open(struct snd_pcm_substream *ss)
{
	struct solo_dev *solo_dev = snd_pcm_substream_chip(ss);
	struct solo_snd_pcm *solo_pcm;

	solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL);
	if (solo_pcm == NULL)
		goto oom;

	solo_pcm->g723_buf = dma_alloc_coherent(&solo_dev->pdev->dev,
						G723_PERIOD_BYTES,
						&solo_pcm->g723_dma,
						GFP_KERNEL);
	if (solo_pcm->g723_buf == NULL)
		goto oom;

	spin_lock_init(&solo_pcm->lock);
	solo_pcm->solo_dev = solo_dev;
	ss->runtime->hw = snd_solo_pcm_hw;

	snd_pcm_substream_chip(ss) = solo_pcm;

	return 0;

oom:
	kfree(solo_pcm);
	return -ENOMEM;
}

static int snd_solo_pcm_close(struct snd_pcm_substream *ss)
{
	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);

	snd_pcm_substream_chip(ss) = solo_pcm->solo_dev;
	dma_free_coherent(&solo_pcm->solo_dev->pdev->dev, G723_PERIOD_BYTES,
			  solo_pcm->g723_buf, solo_pcm->g723_dma);
	kfree(solo_pcm);

	return 0;
}

static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
{
	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	struct solo_dev *solo_dev = solo_pcm->solo_dev;
	int ret = 0;

	spin_lock(&solo_pcm->lock);

	switch (cmd) {
	case SNDRV_PCM_TRIGGER_START:
		if (solo_pcm->on == 0) {
			/* If this is the first user, switch on interrupts */
			if (atomic_inc_return(&solo_dev->snd_users) == 1)
				solo_irq_on(solo_dev, SOLO_IRQ_G723);
			solo_pcm->on = 1;
		}
		break;
	case SNDRV_PCM_TRIGGER_STOP:
		if (solo_pcm->on) {
			/* If this was our last user, switch them off */
			if (atomic_dec_return(&solo_dev->snd_users) == 0)
				solo_irq_off(solo_dev, SOLO_IRQ_G723);
			solo_pcm->on = 0;
		}
		break;
	default:
		ret = -EINVAL;
	}

	spin_unlock(&solo_pcm->lock);

	return ret;
}

static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss)
{
	return 0;
}

static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
{
	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	struct solo_dev *solo_dev = solo_pcm->solo_dev;
	snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f;

	return idx * G723_FRAMES_PER_PAGE;
}

static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
			     unsigned long pos, struct iov_iter *dst,
			     unsigned long count)
{
	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	struct solo_dev *solo_dev = solo_pcm->solo_dev;
	int err, i;

	for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
		int page = (pos / G723_FRAMES_PER_PAGE) + i;

		err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
				     SOLO_G723_EXT_ADDR(solo_dev) +
				     (page * G723_PERIOD_BLOCK) +
				     (ss->number * G723_PERIOD_BYTES),
				     G723_PERIOD_BYTES, 0, 0);
		if (err)
			return err;

		if (copy_to_iter(solo_pcm->g723_buf, G723_PERIOD_BYTES, dst) !=
		    G723_PERIOD_BYTES)
			return -EFAULT;
	}

	return 0;
}

static const struct snd_pcm_ops snd_solo_pcm_ops = {
	.open = snd_solo_pcm_open,
	.close = snd_solo_pcm_close,
	.prepare = snd_solo_pcm_prepare,
	.trigger = snd_solo_pcm_trigger,
	.pointer = snd_solo_pcm_pointer,
	.copy = snd_solo_pcm_copy,
};

static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_info *info)
{
	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	info->count = 1;
	info->value.integer.min = 0;
	info->value.integer.max = 15;
	info->value.integer.step = 1;

	return 0;
}

static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *value)
{
	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
	u8 ch = value->id.numid - 1;

	value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch);

	return 0;
}

static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *value)
{
	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
	u8 ch = value->id.numid - 1;
	u8 old_val;

	old_val = tw28_get_audio_gain(solo_dev, ch);
	if (old_val == value->value.integer.value[0])
		return 0;

	tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]);

	return 1;
}

static const struct snd_kcontrol_new snd_solo_capture_volume = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Capture Volume",
	.info = snd_solo_capture_volume_info,
	.get = snd_solo_capture_volume_get,
	.put = snd_solo_capture_volume_put,
};

static int solo_snd_pcm_init(struct solo_dev *solo_dev)
{
	struct snd_card *card = solo_dev->snd_card;
	struct snd_pcm *pcm;
	struct snd_pcm_substream *ss;
	int ret;
	int i;

	ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans,
			  &pcm);
	if (ret < 0)
		return ret;

	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
			&snd_solo_pcm_ops);

	snd_pcm_chip(pcm) = solo_dev;
	pcm->info_flags = 0;
	strscpy(pcm->name, card->shortname, sizeof(pcm->name));

	for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
	     ss; ss = ss->next, i++)
		sprintf(ss->name, "Camera #%d Audio", i);

	snd_pcm_set_managed_buffer_all(pcm,
				       SNDRV_DMA_TYPE_CONTINUOUS,
				       NULL,
				       G723_PERIOD_BYTES * PERIODS,
				       G723_PERIOD_BYTES * PERIODS);

	solo_dev->snd_pcm = pcm;

	return 0;
}

int solo_g723_init(struct solo_dev *solo_dev)
{
	static struct snd_device_ops ops = { };
	struct snd_card *card;
	struct snd_kcontrol_new kctl;
	char name[32];
	int ret;

	atomic_set(&solo_dev->snd_users, 0);

	/* Allows for easier mapping between video and audio */
	sprintf(name, "Softlogic%d", solo_dev->vfd->num);

	ret = snd_card_new(&solo_dev->pdev->dev,
			   SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0,
			   &solo_dev->snd_card);
	if (ret < 0)
		return ret;

	card = solo_dev->snd_card;

	strscpy(card->driver, SOLO6X10_NAME, sizeof(card->driver));
	strscpy(card->shortname, "SOLO-6x10 Audio", sizeof(card->shortname));
	sprintf(card->longname, "%s on %s IRQ %d", card->shortname,
		pci_name(solo_dev->pdev), solo_dev->pdev->irq);

	ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops);
	if (ret < 0)
		goto snd_error;

	/* Mixer controls */
	strscpy(card->mixername, "SOLO-6x10", sizeof(card->mixername));
	kctl = snd_solo_capture_volume;
	kctl.count = solo_dev->nr_chans;

	ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev));
	if (ret < 0)
		goto snd_error;

	ret = solo_snd_pcm_init(solo_dev);
	if (ret < 0)
		goto snd_error;

	ret = snd_card_register(card);
	if (ret < 0)
		goto snd_error;

	solo_g723_config(solo_dev);

	dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name);

	return 0;

snd_error:
	snd_card_free(card);
	return ret;
}

void solo_g723_exit(struct solo_dev *solo_dev)
{
	if (!solo_dev->snd_card)
		return;

	solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0);
	solo_irq_off(solo_dev, SOLO_IRQ_G723);

	snd_card_free(solo_dev->snd_card);
	solo_dev->snd_card = NULL;
}
Commit	Line	Data
c942fddf	1	// SPDX-License-Identifier: GPL-2.0-or-later
faa4fd2a	2	/*
cf293a4f	3	* Copyright (C) 2010-2013 Bluecherry, LLC <https://www.bluecherrydvr.com>
dcae5dac HV	4	*
	5	* Original author:
	6	* Ben Collins <bcollins@ubuntu.com>
	7	*
	8	* Additional work by:
	9	* John Brooks <john.brooks@bluecherry.net>
faa4fd2a BC	10	*/
	11
	12	#include <linux/kernel.h>
	13	#include <linux/mempool.h>
	14	#include <linux/poll.h>
	15	#include <linux/kthread.h>
	16	#include <linux/freezer.h>
dcae5dac HV	17	#include <linux/module.h>
	18	#include <linux/slab.h>
	19
faa4fd2a BC	20	#include <sound/core.h>
	21	#include <sound/initval.h>
	22	#include <sound/pcm.h>
	23	#include <sound/control.h>
dcae5dac	24
ae69b22c	25	#include "solo6x10.h"
dad7fab9	26	#include "solo6x10-tw28.h"
faa4fd2a	27
faa4fd2a BC	28	#define G723_FDMA_PAGES 32
	29	#define G723_PERIOD_BYTES 48
	30	#define G723_PERIOD_BLOCK 1024
	31	#define G723_FRAMES_PER_PAGE 48
	32
	33	/* Sets up channels 16-19 for decoding and 0-15 for encoding */
	34	#define OUTMODE_MASK 0x300
	35
	36	#define SAMPLERATE 8000
	37	#define BITRATE 25
	38
	39	/* The solo writes to 1k byte pages, 32 pages, in the dma. Each 1k page
	40	* is broken down to 20 * 48 byte regions (one for each channel possible)
	41	* with the rest of the page being dummy data. */
9d1b1f61	42	#define PERIODS G723_FDMA_PAGES
dcae5dac	43	#define G723_INTR_ORDER 4 /* 0 - 4 */
faa4fd2a BC	44
faa4fd2a BC	45	struct solo_snd_pcm {
dcae5dac HV	46	int on;
dcae5dac HV	47	spinlock_t lock;
8a4d9a9c IL	48	struct solo_dev *solo_dev;
8a4d9a9c IL	49	u8 *g723_buf;
dcae5dac	50	dma_addr_t g723_dma;
faa4fd2a BC	51	};
faa4fd2a BC	52
decebabf	53	static void solo_g723_config(struct solo_dev *solo_dev)
faa4fd2a BC	54	{
	55	int clk_div;
	56
dcae5dac HV	57	clk_div = (solo_dev->clock_mhz * 1000000)
dcae5dac HV	58	/ (SAMPLERATE * (BITRATE * 2) * 2);
faa4fd2a BC	59
faa4fd2a BC	60	solo_reg_write(solo_dev, SOLO_AUDIO_SAMPLE,
dcae5dac HV	61	SOLO_AUDIO_BITRATE(BITRATE)
dcae5dac HV	62	\| SOLO_AUDIO_CLK_DIV(clk_div));
faa4fd2a BC	63
faa4fd2a BC	64	solo_reg_write(solo_dev, SOLO_AUDIO_FDMA_INTR,
dcae5dac HV	65	SOLO_AUDIO_FDMA_INTERVAL(1)
	66	\| SOLO_AUDIO_INTR_ORDER(G723_INTR_ORDER)
	67	\| SOLO_AUDIO_FDMA_BASE(SOLO_G723_EXT_ADDR(solo_dev) >> 16));
faa4fd2a BC	68
faa4fd2a BC	69	solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL,
dcae5dac HV	70	SOLO_AUDIO_ENABLE
	71	\| SOLO_AUDIO_I2S_MODE
	72	\| SOLO_AUDIO_I2S_MULTI(3)
	73	\| SOLO_AUDIO_MODE(OUTMODE_MASK));
faa4fd2a BC	74	}
faa4fd2a BC	75
decebabf	76	void solo_g723_isr(struct solo_dev *solo_dev)
faa4fd2a BC	77	{
	78	struct snd_pcm_str *pstr =
	79	&solo_dev->snd_pcm->streams[SNDRV_PCM_STREAM_CAPTURE];
	80	struct snd_pcm_substream *ss;
	81	struct solo_snd_pcm *solo_pcm;
	82
faa4fd2a BC	83	for (ss = pstr->substream; ss != NULL; ss = ss->next) {
	84	if (snd_pcm_substream_chip(ss) == NULL)
	85	continue;
	86
	87	/* This means open() hasn't been called on this one */
	88	if (snd_pcm_substream_chip(ss) == solo_dev)
	89	continue;
	90
	91	/* Haven't triggered a start yet */
	92	solo_pcm = snd_pcm_substream_chip(ss);
	93	if (!solo_pcm->on)
	94	continue;
	95
	96	snd_pcm_period_elapsed(ss);
	97	}
	98	}
	99
dcae5dac	100	static const struct snd_pcm_hardware snd_solo_pcm_hw = {
faa4fd2a BC	101	.info = (SNDRV_PCM_INFO_MMAP \|
	102	SNDRV_PCM_INFO_INTERLEAVED \|
	103	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	104	SNDRV_PCM_INFO_MMAP_VALID),
	105	.formats = SNDRV_PCM_FMTBIT_U8,
	106	.rates = SNDRV_PCM_RATE_8000,
dcae5dac HV	107	.rate_min = SAMPLERATE,
dcae5dac HV	108	.rate_max = SAMPLERATE,
faa4fd2a BC	109	.channels_min = 1,
faa4fd2a BC	110	.channels_max = 1,
9d1b1f61	111	.buffer_bytes_max = G723_PERIOD_BYTES * PERIODS,
faa4fd2a BC	112	.period_bytes_min = G723_PERIOD_BYTES,
faa4fd2a BC	113	.period_bytes_max = G723_PERIOD_BYTES,
9d1b1f61 KH	114	.periods_min = PERIODS,
9d1b1f61 KH	115	.periods_max = PERIODS,
faa4fd2a BC	116	};
	117
	118	static int snd_solo_pcm_open(struct snd_pcm_substream *ss)
	119	{
decebabf	120	struct solo_dev *solo_dev = snd_pcm_substream_chip(ss);
faa4fd2a BC	121	struct solo_snd_pcm *solo_pcm;
	122
	123	solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL);
	124	if (solo_pcm == NULL)
dcae5dac HV	125	goto oom;
dcae5dac HV	126
0c5a71dc CJ	127	solo_pcm->g723_buf = dma_alloc_coherent(&solo_dev->pdev->dev,
	128	G723_PERIOD_BYTES,
	129	&solo_pcm->g723_dma,
	130	GFP_KERNEL);
dcae5dac HV	131	if (solo_pcm->g723_buf == NULL)
dcae5dac HV	132	goto oom;
faa4fd2a BC	133
	134	spin_lock_init(&solo_pcm->lock);
	135	solo_pcm->solo_dev = solo_dev;
	136	ss->runtime->hw = snd_solo_pcm_hw;
	137
	138	snd_pcm_substream_chip(ss) = solo_pcm;
	139
	140	return 0;
dcae5dac HV	141
	142	oom:
	143	kfree(solo_pcm);
	144	return -ENOMEM;
faa4fd2a BC	145	}
	146
	147	static int snd_solo_pcm_close(struct snd_pcm_substream *ss)
	148	{
	149	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	150
	151	snd_pcm_substream_chip(ss) = solo_pcm->solo_dev;
0c5a71dc CJ	152	dma_free_coherent(&solo_pcm->solo_dev->pdev->dev, G723_PERIOD_BYTES,
0c5a71dc CJ	153	solo_pcm->g723_buf, solo_pcm->g723_dma);
faa4fd2a BC	154	kfree(solo_pcm);
faa4fd2a BC	155
98e2d5a8	156	return 0;
faa4fd2a BC	157	}
	158
	159	static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
	160	{
	161	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	162	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	163	int ret = 0;
	164
	165	spin_lock(&solo_pcm->lock);
	166
	167	switch (cmd) {
	168	case SNDRV_PCM_TRIGGER_START:
	169	if (solo_pcm->on == 0) {
	170	/* If this is the first user, switch on interrupts */
	171	if (atomic_inc_return(&solo_dev->snd_users) == 1)
decebabf	172	solo_irq_on(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	173	solo_pcm->on = 1;
	174	}
	175	break;
	176	case SNDRV_PCM_TRIGGER_STOP:
	177	if (solo_pcm->on) {
	178	/* If this was our last user, switch them off */
	179	if (atomic_dec_return(&solo_dev->snd_users) == 0)
decebabf	180	solo_irq_off(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	181	solo_pcm->on = 0;
	182	}
	183	break;
	184	default:
	185	ret = -EINVAL;
	186	}
	187
	188	spin_unlock(&solo_pcm->lock);
	189
	190	return ret;
	191	}
	192
	193	static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss)
	194	{
98e2d5a8	195	return 0;
faa4fd2a BC	196	}
	197
	198	static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
	199	{
	200	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	201	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	202	snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f;
	203
	204	return idx * G723_FRAMES_PER_PAGE;
	205	}
	206
44f08b67 TI	207	static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
	208	unsigned long pos, struct iov_iter *dst,
	209	unsigned long count)
faa4fd2a BC	210	{
faa4fd2a BC	211	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	212	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	213	int err, i;
	214
	215	for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
	216	int page = (pos / G723_FRAMES_PER_PAGE) + i;
	217
dcae5dac HV	218	err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
	219	SOLO_G723_EXT_ADDR(solo_dev) +
	220	(page * G723_PERIOD_BLOCK) +
	221	(ss->number * G723_PERIOD_BYTES),
	222	G723_PERIOD_BYTES, 0, 0);
faa4fd2a BC	223	if (err)
	224	return err;
	225
44f08b67 TI	226	if (copy_to_iter(solo_pcm->g723_buf, G723_PERIOD_BYTES, dst) !=
44f08b67 TI	227	G723_PERIOD_BYTES)
6a4ca039	228	return -EFAULT;
43e69758 MCC	229	}
	230
	231	return 0;
1facf21e TI	232	}
1facf21e TI	233
5c8d8c01	234	static const struct snd_pcm_ops snd_solo_pcm_ops = {
faa4fd2a BC	235	.open = snd_solo_pcm_open,
faa4fd2a BC	236	.close = snd_solo_pcm_close,
faa4fd2a BC	237	.prepare = snd_solo_pcm_prepare,
	238	.trigger = snd_solo_pcm_trigger,
	239	.pointer = snd_solo_pcm_pointer,
44f08b67	240	.copy = snd_solo_pcm_copy,
faa4fd2a BC	241	};
	242
	243	static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
	244	struct snd_ctl_elem_info *info)
	245	{
	246	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	247	info->count = 1;
	248	info->value.integer.min = 0;
	249	info->value.integer.max = 15;
	250	info->value.integer.step = 1;
	251
	252	return 0;
	253	}
	254
	255	static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol,
	256	struct snd_ctl_elem_value *value)
	257	{
decebabf	258	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
faa4fd2a BC	259	u8 ch = value->id.numid - 1;
	260
	261	value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch);
	262
98e2d5a8	263	return 0;
faa4fd2a BC	264	}
	265
	266	static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol,
	267	struct snd_ctl_elem_value *value)
	268	{
decebabf	269	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
faa4fd2a	270	u8 ch = value->id.numid - 1;
98e2d5a8	271	u8 old_val;
faa4fd2a	272
98e2d5a8	273	old_val = tw28_get_audio_gain(solo_dev, ch);
faa4fd2a BC	274	if (old_val == value->value.integer.value[0])
	275	return 0;
	276
	277	tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]);
	278
98e2d5a8	279	return 1;
faa4fd2a BC	280	}
faa4fd2a BC	281
24a571d1	282	static const struct snd_kcontrol_new snd_solo_capture_volume = {
faa4fd2a BC	283	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	284	.name = "Capture Volume",
	285	.info = snd_solo_capture_volume_info,
	286	.get = snd_solo_capture_volume_get,
	287	.put = snd_solo_capture_volume_put,
	288	};
	289
decebabf	290	static int solo_snd_pcm_init(struct solo_dev *solo_dev)
faa4fd2a BC	291	{
	292	struct snd_card *card = solo_dev->snd_card;
	293	struct snd_pcm *pcm;
	294	struct snd_pcm_substream *ss;
	295	int ret;
	296	int i;
	297
	298	ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans,
	299	&pcm);
	300	if (ret < 0)
	301	return ret;
	302
	303	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
	304	&snd_solo_pcm_ops);
	305
	306	snd_pcm_chip(pcm) = solo_dev;
	307	pcm->info_flags = 0;
cc1e6315	308	strscpy(pcm->name, card->shortname, sizeof(pcm->name));
faa4fd2a BC	309
	310	for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
	311	ss; ss = ss->next, i++)
	312	sprintf(ss->name, "Camera #%d Audio", i);
	313
a98e2e22 TI	314	snd_pcm_set_managed_buffer_all(pcm,
	315	SNDRV_DMA_TYPE_CONTINUOUS,
	316	NULL,
	317	G723_PERIOD_BYTES * PERIODS,
	318	G723_PERIOD_BYTES * PERIODS);
faa4fd2a BC	319
	320	solo_dev->snd_pcm = pcm;
	321
	322	return 0;
	323	}
	324
decebabf	325	int solo_g723_init(struct solo_dev *solo_dev)
faa4fd2a	326	{
c4d27f4b	327	static struct snd_device_ops ops = { };
faa4fd2a BC	328	struct snd_card *card;
	329	struct snd_kcontrol_new kctl;
	330	char name[32];
	331	int ret;
	332
	333	atomic_set(&solo_dev->snd_users, 0);
	334
	335	/* Allows for easier mapping between video and audio */
	336	sprintf(name, "Softlogic%d", solo_dev->vfd->num);
	337
3a3d2afd TI	338	ret = snd_card_new(&solo_dev->pdev->dev,
	339	SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0,
	340	&solo_dev->snd_card);
faa4fd2a BC	341	if (ret < 0)
	342	return ret;
	343
	344	card = solo_dev->snd_card;
	345
cc1e6315 MCC	346	strscpy(card->driver, SOLO6X10_NAME, sizeof(card->driver));
cc1e6315 MCC	347	strscpy(card->shortname, "SOLO-6x10 Audio", sizeof(card->shortname));
faa4fd2a BC	348	sprintf(card->longname, "%s on %s IRQ %d", card->shortname,
faa4fd2a BC	349	pci_name(solo_dev->pdev), solo_dev->pdev->irq);
faa4fd2a BC	350
	351	ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops);
	352	if (ret < 0)
	353	goto snd_error;
	354
	355	/* Mixer controls */
cc1e6315	356	strscpy(card->mixername, "SOLO-6x10", sizeof(card->mixername));
faa4fd2a BC	357	kctl = snd_solo_capture_volume;
faa4fd2a BC	358	kctl.count = solo_dev->nr_chans;
dcae5dac	359
98e2d5a8	360	ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev));
faa4fd2a	361	if (ret < 0)
dcdff74f	362	goto snd_error;
faa4fd2a	363
afabbe6d	364	ret = solo_snd_pcm_init(solo_dev);
afabbe6d	365	if (ret < 0)
faa4fd2a BC	366	goto snd_error;
faa4fd2a BC	367
afabbe6d	368	ret = snd_card_register(card);
afabbe6d	369	if (ret < 0)
faa4fd2a BC	370	goto snd_error;
	371
	372	solo_g723_config(solo_dev);
	373
	374	dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name);
	375
	376	return 0;
	377
	378	snd_error:
	379	snd_card_free(card);
	380	return ret;
	381	}
	382
decebabf	383	void solo_g723_exit(struct solo_dev *solo_dev)
faa4fd2a	384	{
dcae5dac HV	385	if (!solo_dev->snd_card)
	386	return;
	387
faa4fd2a	388	solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0);
decebabf	389	solo_irq_off(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	390
faa4fd2a BC	391	snd_card_free(solo_dev->snd_card);
dcae5dac	392	solo_dev->snd_card = NULL;
faa4fd2a	393	}