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[ALSA] Current driver does not utilize 44.1kHz high quality sampling rate converter.

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Following patch will make the driver to use the 44.1kHz SRC automatically
if the pcm source is 44.1kHz signed 16bit stereo.
The SRC is available in YMF754 only.

Signed-off-by: Teru KAMOGASHIRA <teru@sodan.ecc.u-tokyo.ac.jp>
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Teru KAMOGASHIRA 2006-12-04 18:03:53 +01:00 committed by Jaroslav Kysela
parent c577b8a16f
commit 9ed1261e3e
2 changed files with 43 additions and 5 deletions
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4
include/sound/ymfpci.h
View File

@ -270,6 +270,7 @@ struct snd_ymfpci_pcm {
struct snd_pcm_substream *substream;
struct snd_ymfpci_voice *voices[2]; /* playback only */
unsigned int running: 1,
use_441_slot: 1,
output_front: 1,
output_rear: 1,
swap_rear: 1;
@ -324,6 +325,7 @@ struct snd_ymfpci {
u32 active_bank;
struct snd_ymfpci_voice voices[64];
int src441_used;
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97;
@ -346,7 +348,7 @@ struct snd_ymfpci {
int mode_dup4ch;
int rear_opened;
int spdif_opened;
struct {
struct snd_ymfpci_pcm_mixer {
u16 left;
u16 right;
struct snd_kcontrol *ctl;

44
sound/pci/ymfpci/ymfpci_main.c
View File

@ -171,6 +171,17 @@ static u32 snd_ymfpci_calc_lpfQ(u32 rate)
return val[0];
}
static void snd_ymfpci_pcm_441_volume_set(struct snd_ymfpci_pcm *ypcm)
{
unsigned int value;
struct snd_ymfpci_pcm_mixer *mixer;
mixer = &ypcm->chip->pcm_mixer[ypcm->substream->number];
value = min_t(unsigned int, mixer->left, 0x7fff) >> 1;
value |= (min_t(unsigned int, mixer->right, 0x7fff) >> 1) << 16;
snd_ymfpci_writel(ypcm->chip, YDSXGR_BUF441OUTVOL, value);
}
/*
* Hardware start management
*/
@ -282,6 +293,10 @@ static int snd_ymfpci_voice_free(struct snd_ymfpci *chip, struct snd_ymfpci_voic
snd_assert(pvoice != NULL, return -EINVAL);
snd_ymfpci_hw_stop(chip);
spin_lock_irqsave(&chip->voice_lock, flags);
if (pvoice->number == chip->src441_used) {
chip->src441_used = -1;
pvoice->ypcm->use_441_slot = 0;
}
pvoice->use = pvoice->pcm = pvoice->synth = pvoice->midi = 0;
pvoice->ypcm = NULL;
pvoice->interrupt = NULL;
@ -386,7 +401,7 @@ static int snd_ymfpci_playback_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
chip->ctrl_playback[ypcm->voices[0]->number + 1] = cpu_to_le32(ypcm->voices[0]->bank_addr);
if (ypcm->voices[1] != NULL)
if (ypcm->voices[1] != NULL && !ypcm->use_441_slot)
chip->ctrl_playback[ypcm->voices[1]->number + 1] = cpu_to_le32(ypcm->voices[1]->bank_addr);
ypcm->running = 1;
break;
@ -394,7 +409,7 @@ static int snd_ymfpci_playback_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
chip->ctrl_playback[ypcm->voices[0]->number + 1] = 0;
if (ypcm->voices[1] != NULL)
if (ypcm->voices[1] != NULL && !ypcm->use_441_slot)
chip->ctrl_playback[ypcm->voices[1]->number + 1] = 0;
ypcm->running = 0;
break;
@ -481,6 +496,7 @@ static void snd_ymfpci_pcm_init_voice(struct snd_ymfpci_pcm *ypcm, unsigned int
unsigned int nbank;
u32 vol_left, vol_right;
u8 use_left, use_right;
unsigned long flags;
snd_assert(voice != NULL, return);
if (runtime->channels == 1) {
@ -499,11 +515,27 @@ static void snd_ymfpci_pcm_init_voice(struct snd_ymfpci_pcm *ypcm, unsigned int
vol_left = cpu_to_le32(0x40000000);
vol_right = cpu_to_le32(0x40000000);
}
spin_lock_irqsave(&ypcm->chip->voice_lock, flags);
format = runtime->channels == 2 ? 0x00010000 : 0;
if (snd_pcm_format_width(runtime->format) == 8)
format |= 0x80000000;
else if (ypcm->chip->device_id == PCI_DEVICE_ID_YAMAHA_754 &&
runtime->rate == 44100 && runtime->channels == 2 &&
voiceidx == 0 && (ypcm->chip->src441_used == -1 ||
ypcm->chip->src441_used == voice->number)) {
ypcm->chip->src441_used = voice->number;
ypcm->use_441_slot = 1;
format |= 0x10000000;
snd_ymfpci_pcm_441_volume_set(ypcm);
}
if (ypcm->chip->src441_used == voice->number &&
(format & 0x10000000) == 0) {
ypcm->chip->src441_used = -1;
ypcm->use_441_slot = 0;
}
if (runtime->channels == 2 && (voiceidx & 1) != 0)
format |= 1;
spin_unlock_irqrestore(&ypcm->chip->voice_lock, flags);
for (nbank = 0; nbank < 2; nbank++) {
bank = &voice->bank[nbank];
memset(bank, 0, sizeof(*bank));
@ -1714,7 +1746,10 @@ static int snd_ymfpci_pcm_vol_put(struct snd_kcontrol *kcontrol,
spin_lock_irqsave(&chip->voice_lock, flags);
if (substream->runtime && substream->runtime->private_data) {
struct snd_ymfpci_pcm *ypcm = substream->runtime->private_data;
ypcm->update_pcm_vol = 2;
if (!ypcm->use_441_slot)
ypcm->update_pcm_vol = 2;
else
snd_ymfpci_pcm_441_volume_set(ypcm);
}
spin_unlock_irqrestore(&chip->voice_lock, flags);
return 1;
@ -2253,7 +2288,7 @@ static int saved_regs_index[] = {
YDSXGR_PRIADCLOOPVOL,
YDSXGR_NATIVEDACINVOL,
YDSXGR_NATIVEDACOUTVOL,
// YDSXGR_BUF441OUTVOL,
YDSXGR_BUF441OUTVOL,
YDSXGR_NATIVEADCINVOL,
YDSXGR_SPDIFLOOPVOL,
YDSXGR_SPDIFOUTVOL,
@ -2368,6 +2403,7 @@ int __devinit snd_ymfpci_create(struct snd_card *card,
chip->reg_area_phys = pci_resource_start(pci, 0);
chip->reg_area_virt = ioremap_nocache(chip->reg_area_phys, 0x8000);
pci_set_master(pci);
chip->src441_used = -1;
if ((chip->res_reg_area = request_mem_region(chip->reg_area_phys, 0x8000, "YMFPCI")) == NULL) {
snd_printk(KERN_ERR "unable to grab memory region 0x%lx-0x%lx\n", chip->reg_area_phys, chip->reg_area_phys + 0x8000 - 1);