[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 <http://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 int snd_solo_hw_params(struct snd_pcm_substream *ss,
			      struct snd_pcm_hw_params *hw_params)
{
	return snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params));
}

static int snd_solo_hw_free(struct snd_pcm_substream *ss)
{
	return snd_pcm_lib_free_pages(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 = pci_alloc_consistent(solo_dev->pdev,
						  G723_PERIOD_BYTES,
						  &solo_pcm->g723_dma);
	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;
	pci_free_consistent(solo_pcm->solo_dev->pdev, 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_user(struct snd_pcm_substream *ss, int channel,
				  unsigned long pos, void __user *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_user(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES))
			return -EFAULT;
		dst += G723_PERIOD_BYTES;
	}

	return 0;
}

static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
				    unsigned long pos, void *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;

		memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
		dst += G723_PERIOD_BYTES;
	}

	return 0;
}

static const struct snd_pcm_ops snd_solo_pcm_ops = {
	.open = snd_solo_pcm_open,
	.close = snd_solo_pcm_close,
	.ioctl = snd_pcm_lib_ioctl,
	.hw_params = snd_solo_hw_params,
	.hw_free = snd_solo_hw_free,
	.prepare = snd_solo_pcm_prepare,
	.trigger = snd_solo_pcm_trigger,
	.pointer = snd_solo_pcm_pointer,
	.copy_user = snd_solo_pcm_copy_user,
	.copy_kernel = snd_solo_pcm_copy_kernel,
};

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_lib_preallocate_pages_for_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)
		return ret;

	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	/*
dcae5dac HV	3	* Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
	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
	100	static int snd_solo_hw_params(struct snd_pcm_substream *ss,
	101	struct snd_pcm_hw_params *hw_params)
	102	{
	103	return snd_pcm_lib_malloc_pages(ss, params_buffer_bytes(hw_params));
	104	}
	105
	106	static int snd_solo_hw_free(struct snd_pcm_substream *ss)
	107	{
	108	return snd_pcm_lib_free_pages(ss);
	109	}
	110
dcae5dac	111	static const struct snd_pcm_hardware snd_solo_pcm_hw = {
faa4fd2a BC	112	.info = (SNDRV_PCM_INFO_MMAP \|
	113	SNDRV_PCM_INFO_INTERLEAVED \|
	114	SNDRV_PCM_INFO_BLOCK_TRANSFER \|
	115	SNDRV_PCM_INFO_MMAP_VALID),
	116	.formats = SNDRV_PCM_FMTBIT_U8,
	117	.rates = SNDRV_PCM_RATE_8000,
dcae5dac HV	118	.rate_min = SAMPLERATE,
dcae5dac HV	119	.rate_max = SAMPLERATE,
faa4fd2a BC	120	.channels_min = 1,
faa4fd2a BC	121	.channels_max = 1,
9d1b1f61	122	.buffer_bytes_max = G723_PERIOD_BYTES * PERIODS,
faa4fd2a BC	123	.period_bytes_min = G723_PERIOD_BYTES,
faa4fd2a BC	124	.period_bytes_max = G723_PERIOD_BYTES,
9d1b1f61 KH	125	.periods_min = PERIODS,
9d1b1f61 KH	126	.periods_max = PERIODS,
faa4fd2a BC	127	};
	128
	129	static int snd_solo_pcm_open(struct snd_pcm_substream *ss)
	130	{
decebabf	131	struct solo_dev *solo_dev = snd_pcm_substream_chip(ss);
faa4fd2a BC	132	struct solo_snd_pcm *solo_pcm;
	133
	134	solo_pcm = kzalloc(sizeof(*solo_pcm), GFP_KERNEL);
	135	if (solo_pcm == NULL)
dcae5dac HV	136	goto oom;
	137
	138	solo_pcm->g723_buf = pci_alloc_consistent(solo_dev->pdev,
	139	G723_PERIOD_BYTES,
	140	&solo_pcm->g723_dma);
	141	if (solo_pcm->g723_buf == NULL)
	142	goto oom;
faa4fd2a BC	143
	144	spin_lock_init(&solo_pcm->lock);
	145	solo_pcm->solo_dev = solo_dev;
	146	ss->runtime->hw = snd_solo_pcm_hw;
	147
	148	snd_pcm_substream_chip(ss) = solo_pcm;
	149
	150	return 0;
dcae5dac HV	151
	152	oom:
	153	kfree(solo_pcm);
	154	return -ENOMEM;
faa4fd2a BC	155	}
	156
	157	static int snd_solo_pcm_close(struct snd_pcm_substream *ss)
	158	{
	159	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	160
	161	snd_pcm_substream_chip(ss) = solo_pcm->solo_dev;
dcae5dac HV	162	pci_free_consistent(solo_pcm->solo_dev->pdev, G723_PERIOD_BYTES,
dcae5dac HV	163	solo_pcm->g723_buf, solo_pcm->g723_dma);
faa4fd2a BC	164	kfree(solo_pcm);
faa4fd2a BC	165
98e2d5a8	166	return 0;
faa4fd2a BC	167	}
	168
	169	static int snd_solo_pcm_trigger(struct snd_pcm_substream *ss, int cmd)
	170	{
	171	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	172	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	173	int ret = 0;
	174
	175	spin_lock(&solo_pcm->lock);
	176
	177	switch (cmd) {
	178	case SNDRV_PCM_TRIGGER_START:
	179	if (solo_pcm->on == 0) {
	180	/* If this is the first user, switch on interrupts */
	181	if (atomic_inc_return(&solo_dev->snd_users) == 1)
decebabf	182	solo_irq_on(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	183	solo_pcm->on = 1;
	184	}
	185	break;
	186	case SNDRV_PCM_TRIGGER_STOP:
	187	if (solo_pcm->on) {
	188	/* If this was our last user, switch them off */
	189	if (atomic_dec_return(&solo_dev->snd_users) == 0)
decebabf	190	solo_irq_off(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	191	solo_pcm->on = 0;
	192	}
	193	break;
	194	default:
	195	ret = -EINVAL;
	196	}
	197
	198	spin_unlock(&solo_pcm->lock);
	199
	200	return ret;
	201	}
	202
	203	static int snd_solo_pcm_prepare(struct snd_pcm_substream *ss)
	204	{
98e2d5a8	205	return 0;
faa4fd2a BC	206	}
	207
	208	static snd_pcm_uframes_t snd_solo_pcm_pointer(struct snd_pcm_substream *ss)
	209	{
	210	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	211	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	212	snd_pcm_uframes_t idx = solo_reg_read(solo_dev, SOLO_AUDIO_STA) & 0x1f;
	213
	214	return idx * G723_FRAMES_PER_PAGE;
	215	}
	216
43e69758 MCC	217	static int snd_solo_pcm_copy_user(struct snd_pcm_substream *ss, int channel,
	218	unsigned long pos, void __user *dst,
	219	unsigned long count)
faa4fd2a BC	220	{
faa4fd2a BC	221	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
decebabf	222	struct solo_dev *solo_dev = solo_pcm->solo_dev;
faa4fd2a BC	223	int err, i;
	224
	225	for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
	226	int page = (pos / G723_FRAMES_PER_PAGE) + i;
	227
dcae5dac HV	228	err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
	229	SOLO_G723_EXT_ADDR(solo_dev) +
	230	(page * G723_PERIOD_BLOCK) +
	231	(ss->number * G723_PERIOD_BYTES),
	232	G723_PERIOD_BYTES, 0, 0);
faa4fd2a BC	233	if (err)
	234	return err;
	235
43e69758	236	if (copy_to_user(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES))
6a4ca039	237	return -EFAULT;
1facf21e	238	dst += G723_PERIOD_BYTES;
faa4fd2a BC	239	}
	240
	241	return 0;
	242	}
	243
1facf21e TI	244	static int snd_solo_pcm_copy_kernel(struct snd_pcm_substream *ss, int channel,
	245	unsigned long pos, void *dst,
	246	unsigned long count)
	247	{
43e69758 MCC	248	struct solo_snd_pcm *solo_pcm = snd_pcm_substream_chip(ss);
	249	struct solo_dev *solo_dev = solo_pcm->solo_dev;
	250	int err, i;
	251
	252	for (i = 0; i < (count / G723_FRAMES_PER_PAGE); i++) {
	253	int page = (pos / G723_FRAMES_PER_PAGE) + i;
	254
	255	err = solo_p2m_dma_t(solo_dev, 0, solo_pcm->g723_dma,
	256	SOLO_G723_EXT_ADDR(solo_dev) +
	257	(page * G723_PERIOD_BLOCK) +
	258	(ss->number * G723_PERIOD_BYTES),
	259	G723_PERIOD_BYTES, 0, 0);
	260	if (err)
	261	return err;
	262
	263	memcpy(dst, solo_pcm->g723_buf, G723_PERIOD_BYTES);
	264	dst += G723_PERIOD_BYTES;
	265	}
	266
	267	return 0;
1facf21e TI	268	}
1facf21e TI	269
5c8d8c01	270	static const struct snd_pcm_ops snd_solo_pcm_ops = {
faa4fd2a BC	271	.open = snd_solo_pcm_open,
	272	.close = snd_solo_pcm_close,
	273	.ioctl = snd_pcm_lib_ioctl,
	274	.hw_params = snd_solo_hw_params,
	275	.hw_free = snd_solo_hw_free,
	276	.prepare = snd_solo_pcm_prepare,
	277	.trigger = snd_solo_pcm_trigger,
	278	.pointer = snd_solo_pcm_pointer,
1facf21e TI	279	.copy_user = snd_solo_pcm_copy_user,
1facf21e TI	280	.copy_kernel = snd_solo_pcm_copy_kernel,
faa4fd2a BC	281	};
	282
	283	static int snd_solo_capture_volume_info(struct snd_kcontrol *kcontrol,
	284	struct snd_ctl_elem_info *info)
	285	{
	286	info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	287	info->count = 1;
	288	info->value.integer.min = 0;
	289	info->value.integer.max = 15;
	290	info->value.integer.step = 1;
	291
	292	return 0;
	293	}
	294
	295	static int snd_solo_capture_volume_get(struct snd_kcontrol *kcontrol,
	296	struct snd_ctl_elem_value *value)
	297	{
decebabf	298	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
faa4fd2a BC	299	u8 ch = value->id.numid - 1;
	300
	301	value->value.integer.value[0] = tw28_get_audio_gain(solo_dev, ch);
	302
98e2d5a8	303	return 0;
faa4fd2a BC	304	}
	305
	306	static int snd_solo_capture_volume_put(struct snd_kcontrol *kcontrol,
	307	struct snd_ctl_elem_value *value)
	308	{
decebabf	309	struct solo_dev *solo_dev = snd_kcontrol_chip(kcontrol);
faa4fd2a	310	u8 ch = value->id.numid - 1;
98e2d5a8	311	u8 old_val;
faa4fd2a	312
98e2d5a8	313	old_val = tw28_get_audio_gain(solo_dev, ch);
faa4fd2a BC	314	if (old_val == value->value.integer.value[0])
	315	return 0;
	316
	317	tw28_set_audio_gain(solo_dev, ch, value->value.integer.value[0]);
	318
98e2d5a8	319	return 1;
faa4fd2a BC	320	}
faa4fd2a BC	321
24a571d1	322	static const struct snd_kcontrol_new snd_solo_capture_volume = {
faa4fd2a BC	323	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	324	.name = "Capture Volume",
	325	.info = snd_solo_capture_volume_info,
	326	.get = snd_solo_capture_volume_get,
	327	.put = snd_solo_capture_volume_put,
	328	};
	329
decebabf	330	static int solo_snd_pcm_init(struct solo_dev *solo_dev)
faa4fd2a BC	331	{
	332	struct snd_card *card = solo_dev->snd_card;
	333	struct snd_pcm *pcm;
	334	struct snd_pcm_substream *ss;
	335	int ret;
	336	int i;
	337
	338	ret = snd_pcm_new(card, card->driver, 0, 0, solo_dev->nr_chans,
	339	&pcm);
	340	if (ret < 0)
	341	return ret;
	342
	343	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
	344	&snd_solo_pcm_ops);
	345
	346	snd_pcm_chip(pcm) = solo_dev;
	347	pcm->info_flags = 0;
cc1e6315	348	strscpy(pcm->name, card->shortname, sizeof(pcm->name));
faa4fd2a BC	349
	350	for (i = 0, ss = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
	351	ss; ss = ss->next, i++)
	352	sprintf(ss->name, "Camera #%d Audio", i);
	353
62e94da3	354	snd_pcm_lib_preallocate_pages_for_all(pcm,
faa4fd2a	355	SNDRV_DMA_TYPE_CONTINUOUS,
ef99d99b	356	NULL,
9d1b1f61 KH	357	G723_PERIOD_BYTES * PERIODS,
9d1b1f61 KH	358	G723_PERIOD_BYTES * PERIODS);
faa4fd2a BC	359
	360	solo_dev->snd_pcm = pcm;
	361
	362	return 0;
	363	}
	364
decebabf	365	int solo_g723_init(struct solo_dev *solo_dev)
faa4fd2a	366	{
c4d27f4b	367	static struct snd_device_ops ops = { };
faa4fd2a BC	368	struct snd_card *card;
	369	struct snd_kcontrol_new kctl;
	370	char name[32];
	371	int ret;
	372
	373	atomic_set(&solo_dev->snd_users, 0);
	374
	375	/* Allows for easier mapping between video and audio */
	376	sprintf(name, "Softlogic%d", solo_dev->vfd->num);
	377
3a3d2afd TI	378	ret = snd_card_new(&solo_dev->pdev->dev,
	379	SNDRV_DEFAULT_IDX1, name, THIS_MODULE, 0,
	380	&solo_dev->snd_card);
faa4fd2a BC	381	if (ret < 0)
	382	return ret;
	383
	384	card = solo_dev->snd_card;
	385
cc1e6315 MCC	386	strscpy(card->driver, SOLO6X10_NAME, sizeof(card->driver));
cc1e6315 MCC	387	strscpy(card->shortname, "SOLO-6x10 Audio", sizeof(card->shortname));
faa4fd2a BC	388	sprintf(card->longname, "%s on %s IRQ %d", card->shortname,
faa4fd2a BC	389	pci_name(solo_dev->pdev), solo_dev->pdev->irq);
faa4fd2a BC	390
	391	ret = snd_device_new(card, SNDRV_DEV_LOWLEVEL, solo_dev, &ops);
	392	if (ret < 0)
	393	goto snd_error;
	394
	395	/* Mixer controls */
cc1e6315	396	strscpy(card->mixername, "SOLO-6x10", sizeof(card->mixername));
faa4fd2a BC	397	kctl = snd_solo_capture_volume;
faa4fd2a BC	398	kctl.count = solo_dev->nr_chans;
dcae5dac	399
98e2d5a8	400	ret = snd_ctl_add(card, snd_ctl_new1(&kctl, solo_dev));
faa4fd2a BC	401	if (ret < 0)
	402	return ret;
	403
afabbe6d	404	ret = solo_snd_pcm_init(solo_dev);
afabbe6d	405	if (ret < 0)
faa4fd2a BC	406	goto snd_error;
faa4fd2a BC	407
afabbe6d	408	ret = snd_card_register(card);
afabbe6d	409	if (ret < 0)
faa4fd2a BC	410	goto snd_error;
	411
	412	solo_g723_config(solo_dev);
	413
	414	dev_info(&solo_dev->pdev->dev, "Alsa sound card as %s\n", name);
	415
	416	return 0;
	417
	418	snd_error:
	419	snd_card_free(card);
	420	return ret;
	421	}
	422
decebabf	423	void solo_g723_exit(struct solo_dev *solo_dev)
faa4fd2a	424	{
dcae5dac HV	425	if (!solo_dev->snd_card)
	426	return;
	427
faa4fd2a	428	solo_reg_write(solo_dev, SOLO_AUDIO_CONTROL, 0);
decebabf	429	solo_irq_off(solo_dev, SOLO_IRQ_G723);
faa4fd2a BC	430
faa4fd2a BC	431	snd_card_free(solo_dev->snd_card);
dcae5dac	432	solo_dev->snd_card = NULL;
faa4fd2a	433	}