ALSA: jazz16: Add support for Media Vision Jazz16 chipset

This is one of Sound Blaster Pro compatible chipsets which is supported
by Linux OSS driver and was missing native supoort for ALSA.

The Jazz16 audio codec is Crystal CS4216 which is capable
of playback and recording up to 48 kHz stereo.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 101 insertions, 16 deletions

diff --git a/sound/isa/sb/sb8_main.c b/sound/isa/sb/sb8_main.c
index 658d55769c9..3222aed5fac 100644
--- a/sound/isa/sb/sb8_main.c
+++ b/sound/isa/sb/sb8_main.c
@@ -106,9 +106,21 @@ static int snd_sb8_playback_prepare(struct snd_pcm_substream *substream)
 	struct snd_sb *chip = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	unsigned int mixreg, rate, size, count;
+	unsigned char format;
+	unsigned char stereo = runtime->channels > 1;
+	int dma;
 
 	rate = runtime->rate;
 	switch (chip->hardware) {
+	case SB_HW_JAZZ16:
+		if (runtime->format == SNDRV_PCM_FORMAT_S16_LE) {
+			if (chip->mode & SB_MODE_CAPTURE_16)
+				return -EBUSY;
+			else
+				chip->mode |= SB_MODE_PLAYBACK_16;
+		}
+		chip->playback_format = SB_DSP_LO_OUTPUT_AUTO;
+		break;
 	case SB_HW_PRO:
 		if (runtime->channels > 1) {
 			if (snd_BUG_ON(rate != SB8_RATE(11025) &&
@@ -133,11 +145,21 @@ static int snd_sb8_playback_prepare(struct snd_pcm_substream *substream)
 	default:
 		return -EINVAL;
 	}
+	if (chip->mode & SB_MODE_PLAYBACK_16) {
+		format = stereo ? SB_DSP_STEREO_16BIT : SB_DSP_MONO_16BIT;
+		dma = chip->dma16;
+	} else {
+		format = stereo ? SB_DSP_STEREO_8BIT : SB_DSP_MONO_8BIT;
+		chip->mode |= SB_MODE_PLAYBACK_8;
+		dma = chip->dma8;
+	}
 	size = chip->p_dma_size = snd_pcm_lib_buffer_bytes(substream);
 	count = chip->p_period_size = snd_pcm_lib_period_bytes(substream);
 	spin_lock_irqsave(&chip->reg_lock, flags);
 	snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON);
-	if (runtime->channels > 1) {
+	if (chip->hardware == SB_HW_JAZZ16)
+		snd_sbdsp_command(chip, format);
+	else if (stereo) {
 		/* set playback stereo mode */
 		spin_lock(&chip->mixer_lock);
 		mixreg = snd_sbmixer_read(chip, SB_DSP_STEREO_SW);
@@ -147,15 +169,14 @@ static int snd_sb8_playback_prepare(struct snd_pcm_substream *substream)
 		/* Soundblaster hardware programming reference guide, 3-23 */
 		snd_sbdsp_command(chip, SB_DSP_DMA8_EXIT);
 		runtime->dma_area[0] = 0x80;
-		snd_dma_program(chip->dma8, runtime->dma_addr, 1, DMA_MODE_WRITE);
+		snd_dma_program(dma, runtime->dma_addr, 1, DMA_MODE_WRITE);
 		/* force interrupt */
-		chip->mode = SB_MODE_HALT;
 		snd_sbdsp_command(chip, SB_DSP_OUTPUT);
 		snd_sbdsp_command(chip, 0);
 		snd_sbdsp_command(chip, 0);
 	}
 	snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE);
-	if (runtime->channels > 1) {
+	if (stereo) {
 		snd_sbdsp_command(chip, 256 - runtime->rate_den / 2);
 		spin_lock(&chip->mixer_lock);
 		/* save output filter status and turn it off */
@@ -168,13 +189,15 @@ static int snd_sb8_playback_prepare(struct snd_pcm_substream *substream)
 		snd_sbdsp_command(chip, 256 - runtime->rate_den);
 	}
 	if (chip->playback_format != SB_DSP_OUTPUT) {
+		if (chip->mode & SB_MODE_PLAYBACK_16)
+			count /= 2;
 		count--;
 		snd_sbdsp_command(chip, SB_DSP_BLOCK_SIZE);
 		snd_sbdsp_command(chip, count & 0xff);
 		snd_sbdsp_command(chip, count >> 8);
 	}
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_dma_program(chip->dma8, runtime->dma_addr,
+	snd_dma_program(dma, runtime->dma_addr,
 			size, DMA_MODE_WRITE | DMA_AUTOINIT);
 	return 0;
 }
@@ -212,7 +235,6 @@ static int snd_sb8_playback_trigger(struct snd_pcm_substream *substream,
 		snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
 	}
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	chip->mode = (cmd == SNDRV_PCM_TRIGGER_START) ? SB_MODE_PLAYBACK_8 : SB_MODE_HALT;
 	return 0;
 }
 
@@ -234,9 +256,21 @@ static int snd_sb8_capture_prepare(struct snd_pcm_substream *substream)
 	struct snd_sb *chip = snd_pcm_substream_chip(substream);
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	unsigned int mixreg, rate, size, count;
+	unsigned char format;
+	unsigned char stereo = runtime->channels > 1;
+	int dma;
 
 	rate = runtime->rate;
 	switch (chip->hardware) {
+	case SB_HW_JAZZ16:
+		if (runtime->format == SNDRV_PCM_FORMAT_S16_LE) {
+			if (chip->mode & SB_MODE_PLAYBACK_16)
+				return -EBUSY;
+			else
+				chip->mode |= SB_MODE_CAPTURE_16;
+		}
+		chip->capture_format = SB_DSP_LO_INPUT_AUTO;
+		break;
 	case SB_HW_PRO:
 		if (runtime->channels > 1) {
 			if (snd_BUG_ON(rate != SB8_RATE(11025) &&
@@ -262,14 +296,24 @@ static int snd_sb8_capture_prepare(struct snd_pcm_substream *substream)
 	default:
 		return -EINVAL;
 	}
+	if (chip->mode & SB_MODE_CAPTURE_16) {
+		format = stereo ? SB_DSP_STEREO_16BIT : SB_DSP_MONO_16BIT;
+		dma = chip->dma16;
+	} else {
+		format = stereo ? SB_DSP_STEREO_8BIT : SB_DSP_MONO_8BIT;
+		chip->mode |= SB_MODE_CAPTURE_8;
+		dma = chip->dma8;
+	}
 	size = chip->c_dma_size = snd_pcm_lib_buffer_bytes(substream);
 	count = chip->c_period_size = snd_pcm_lib_period_bytes(substream);
 	spin_lock_irqsave(&chip->reg_lock, flags);
 	snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
-	if (runtime->channels > 1)
+	if (chip->hardware == SB_HW_JAZZ16)
+		snd_sbdsp_command(chip, format);
+	else if (stereo)
 		snd_sbdsp_command(chip, SB_DSP_STEREO_8BIT);
 	snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE);
-	if (runtime->channels > 1) {
+	if (stereo) {
 		snd_sbdsp_command(chip, 256 - runtime->rate_den / 2);
 		spin_lock(&chip->mixer_lock);
 		/* save input filter status and turn it off */
@@ -282,13 +326,15 @@ static int snd_sb8_capture_prepare(struct snd_pcm_substream *substream)
 		snd_sbdsp_command(chip, 256 - runtime->rate_den);
 	}
 	if (chip->capture_format != SB_DSP_INPUT) {
+		if (chip->mode & SB_MODE_PLAYBACK_16)
+			count /= 2;
 		count--;
 		snd_sbdsp_command(chip, SB_DSP_BLOCK_SIZE);
 		snd_sbdsp_command(chip, count & 0xff);
 		snd_sbdsp_command(chip, count >> 8);
 	}
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	snd_dma_program(chip->dma8, runtime->dma_addr,
+	snd_dma_program(dma, runtime->dma_addr,
 			size, DMA_MODE_READ | DMA_AUTOINIT);
 	return 0;
 }
@@ -328,7 +374,6 @@ static int snd_sb8_capture_trigger(struct snd_pcm_substream *substream,
 		snd_sbdsp_command(chip, SB_DSP_SPEAKER_OFF);
 	}
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
-	chip->mode = (cmd == SNDRV_PCM_TRIGGER_START) ? SB_MODE_CAPTURE_8 : SB_MODE_HALT;
 	return 0;
 }
 
@@ -339,13 +384,21 @@ irqreturn_t snd_sb8dsp_interrupt(struct snd_sb *chip)
 
 	snd_sb_ack_8bit(chip);
 	switch (chip->mode) {
-	case SB_MODE_PLAYBACK_8:	/* ok.. playback is active */
+	case SB_MODE_PLAYBACK_16:	/* ok.. playback is active */
+		if (chip->hardware != SB_HW_JAZZ16)
+			break;
+		/* fallthru */
+	case SB_MODE_PLAYBACK_8:
 		substream = chip->playback_substream;
 		runtime = substream->runtime;
 		if (chip->playback_format == SB_DSP_OUTPUT)
 		    	snd_sb8_playback_trigger(substream, SNDRV_PCM_TRIGGER_START);
 		snd_pcm_period_elapsed(substream);
 		break;
+	case SB_MODE_CAPTURE_16:
+		if (chip->hardware != SB_HW_JAZZ16)
+			break;
+		/* fallthru */
 	case SB_MODE_CAPTURE_8:
 		substream = chip->capture_substream;
 		runtime = substream->runtime;
@@ -361,10 +414,15 @@ static snd_pcm_uframes_t snd_sb8_playback_pointer(struct snd_pcm_substream *subs
 {
 	struct snd_sb *chip = snd_pcm_substream_chip(substream);
 	size_t ptr;
+	int dma;
 
-	if (chip->mode != SB_MODE_PLAYBACK_8)
+	if (chip->mode & SB_MODE_PLAYBACK_8)
+		dma = chip->dma8;
+	else if (chip->mode & SB_MODE_PLAYBACK_16)
+		dma = chip->dma16;
+	else
 		return 0;
-	ptr = snd_dma_pointer(chip->dma8, chip->p_dma_size);
+	ptr = snd_dma_pointer(dma, chip->p_dma_size);
 	return bytes_to_frames(substream->runtime, ptr);
 }
 
@@ -372,10 +430,15 @@ static snd_pcm_uframes_t snd_sb8_capture_pointer(struct snd_pcm_substream *subst
 {
 	struct snd_sb *chip = snd_pcm_substream_chip(substream);
 	size_t ptr;
+	int dma;
 
-	if (chip->mode != SB_MODE_CAPTURE_8)
+	if (chip->mode & SB_MODE_CAPTURE_8)
+		dma = chip->dma8;
+	else if (chip->mode & SB_MODE_CAPTURE_16)
+		dma = chip->dma16;
+	else
 		return 0;
-	ptr = snd_dma_pointer(chip->dma8, chip->c_dma_size);
+	ptr = snd_dma_pointer(dma, chip->c_dma_size);
 	return bytes_to_frames(substream->runtime, ptr);
 }
 
@@ -446,6 +509,13 @@ static int snd_sb8_open(struct snd_pcm_substream *substream)
 		runtime->hw = snd_sb8_capture;
 	}
 	switch (chip->hardware) {
+	case SB_HW_JAZZ16:
+		runtime->hw.formats |= SNDRV_PCM_FMTBIT_S16_LE;
+		runtime->hw.rates |= SNDRV_PCM_RATE_8000_48000;
+		runtime->hw.rate_min = 4000;
+		runtime->hw.rate_max = 50000;
+		runtime->hw.channels_max = 2;
+		break;
 	case SB_HW_PRO:
 		runtime->hw.rate_max = 44100;
 		runtime->hw.channels_max = 2;
@@ -468,6 +538,14 @@ static int snd_sb8_open(struct snd_pcm_substream *substream)
 	}
 	snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 				      &hw_constraints_clock);
+	if (chip->dma8 > 3 || chip->dma16 >= 0) {
+		snd_pcm_hw_constraint_step(runtime, 0,
+					   SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 2);
+		snd_pcm_hw_constraint_step(runtime, 0,
+					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 2);
+		runtime->hw.buffer_bytes_max = 128 * 1024 * 1024;
+		runtime->hw.period_bytes_max = 128 * 1024 * 1024;
+	}
 	return 0;	
 }
 
@@ -480,6 +558,10 @@ static int snd_sb8_close(struct snd_pcm_substream *substream)
 	chip->capture_substream = NULL;
 	spin_lock_irqsave(&chip->open_lock, flags);
 	chip->open &= ~SB_OPEN_PCM;
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+		chip->mode &= ~SB_MODE_PLAYBACK;
+	else
+		chip->mode &= ~SB_MODE_CAPTURE;
 	spin_unlock_irqrestore(&chip->open_lock, flags);
 	return 0;
 }
@@ -515,6 +597,7 @@ int snd_sb8dsp_pcm(struct snd_sb *chip, int device, struct snd_pcm ** rpcm)
 	struct snd_card *card = chip->card;
 	struct snd_pcm *pcm;
 	int err;
+	size_t max_prealloc = 64 * 1024;
 
 	if (rpcm)
 		*rpcm = NULL;
@@ -527,9 +610,11 @@ int snd_sb8dsp_pcm(struct snd_sb *chip, int device, struct snd_pcm ** rpcm)
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb8_playback_ops);
 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb8_capture_ops);
 
+	if (chip->dma8 > 3 || chip->dma16 >= 0)
+		max_prealloc = 128 * 1024;
 	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 					      snd_dma_isa_data(),
-					      64*1024, 64*1024);
+					      64*1024, max_prealloc);
 
 	if (rpcm)
 		*rpcm = pcm;