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Commit 58e8a474 authored by Russell King's avatar Russell King
Browse files

ALSA: AACI: fix channel mask selection 



When double-rate mode was selected, we weren't setting the additional
two channel mask bits to allow double-rate to work.  Rearrange the
hw_params code to allow the correct channel mask to be selected.

Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent e831d80b

sound/arm/aaci.c

+20 −50
Original line number Diff line number Diff line
@@ -490,12 +490,21 @@ static int aaci_pcm_hw_free(struct snd_pcm_substream *substream) 
	return 0;

}



/* Channel to slot mask */

static const u32 channels_to_slotmask[] = {

	[2] = CR_SL3 | CR_SL4,

	[4] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8,

	[6] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8 | CR_SL6 | CR_SL9,

};



static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,

			      struct aaci_runtime *aacirun,

			      struct snd_pcm_hw_params *params)

{

	struct aaci_runtime *aacirun = substream->runtime->private_data;

	unsigned int channels = params_channels(params);

	unsigned int rate = params_rate(params);

	int dbl = rate > 48000;

	int err;

	struct aaci *aaci = substream->private_data;



	aaci_pcm_hw_free(substream);

	if (aacirun->pcm_open) {
@@ -503,18 +512,21 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream, 
		aacirun->pcm_open = 0;

	}



	/* channels is already limited to 2, 4, or 6 by aaci_rule_channels */

	if (dbl && channels != 2)

		return -EINVAL;



	err = snd_pcm_lib_malloc_pages(substream,

				       params_buffer_bytes(params));

	if (err >= 0) {

		unsigned int rate = params_rate(params);

		int dbl = rate > 48000;

		struct aaci *aaci = substream->private_data;



		err = snd_ac97_pcm_open(aacirun->pcm, rate,

					params_channels(params),

		err = snd_ac97_pcm_open(aacirun->pcm, rate, channels,

					aacirun->pcm->r[dbl].slots);



		aacirun->pcm_open = err == 0;

		aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;

		aacirun->cr |= channels_to_slotmask[channels + dbl * 2];

		aacirun->fifosz = aaci->fifosize * 4;



		if (aacirun->cr & CR_COMPACT)
@@ -551,34 +563,6 @@ static snd_pcm_uframes_t aaci_pcm_pointer(struct snd_pcm_substream *substream) 
/*

 * Playback specific ALSA stuff

 */

static const u32 channels_to_txmask[] = {

	[2] = CR_SL3 | CR_SL4,

	[4] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8,

	[6] = CR_SL3 | CR_SL4 | CR_SL7 | CR_SL8 | CR_SL6 | CR_SL9,

};



static int aaci_pcm_playback_hw_params(struct snd_pcm_substream *substream,

				       struct snd_pcm_hw_params *params)

{

	struct aaci_runtime *aacirun = substream->runtime->private_data;

	unsigned int channels = params_channels(params);

	int ret;



	WARN_ON(channels >= ARRAY_SIZE(channels_to_txmask) ||

		!channels_to_txmask[channels]);



	ret = aaci_pcm_hw_params(substream, aacirun, params);



	/*

	 * Enable FIFO, compact mode, 16 bits per sample.

	 * FIXME: double rate slots?

	 */

	if (ret >= 0)

		aacirun->cr |= channels_to_txmask[channels];



	return ret;

}



static void aaci_pcm_playback_stop(struct aaci_runtime *aacirun)

{

	u32 ie;
@@ -648,27 +632,13 @@ static struct snd_pcm_ops aaci_playback_ops = { 
	.open		= aaci_pcm_open,

	.close		= aaci_pcm_close,

	.ioctl		= snd_pcm_lib_ioctl,

	.hw_params	= aaci_pcm_playback_hw_params,

	.hw_params	= aaci_pcm_hw_params,

	.hw_free	= aaci_pcm_hw_free,

	.prepare	= aaci_pcm_prepare,

	.trigger	= aaci_pcm_playback_trigger,

	.pointer	= aaci_pcm_pointer,

};



static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,

				      struct snd_pcm_hw_params *params)

{

	struct aaci_runtime *aacirun = substream->runtime->private_data;

	int ret;



	ret = aaci_pcm_hw_params(substream, aacirun, params);

	if (ret >= 0)

		/* Line in record: slot 3 and 4 */

		aacirun->cr |= CR_SL3 | CR_SL4;



	return ret;

}



static void aaci_pcm_capture_stop(struct aaci_runtime *aacirun)

{

	u32 ie;
@@ -765,7 +735,7 @@ static struct snd_pcm_ops aaci_capture_ops = { 
	.open		= aaci_pcm_open,

	.close		= aaci_pcm_close,

	.ioctl		= snd_pcm_lib_ioctl,

	.hw_params	= aaci_pcm_capture_hw_params,

	.hw_params	= aaci_pcm_hw_params,

	.hw_free	= aaci_pcm_hw_free,

	.prepare	= aaci_pcm_capture_prepare,

	.trigger	= aaci_pcm_capture_trigger,