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ALSA: emu10k1: skip needless setting of some voice registers 

Many registers are meaningless for stereo slaves and the extra voices.
This patch cleans up these unnecessary register writes.

snd_emu10k1_playback_{trigger,stop}_voice() is not called for stereo
slaves any more.

snd_emu10k1_playback_prepare_voice() is renamed to
snd_emu10k1_playback_unmute_voice(), as this better reflects its
remaining function. It's not called for the extra voices any more.

Accordingly, snd_emu10k1_playback_mute_voice() is factored out from
snd_emu10k1_playback_stop_voice(), and is called selectively as well.

This doesn't add conditionals which would avoid initializing
sub-registers, as that wouldn't pull its weight.

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230516093612.3536451-6-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Oswald Buddenhagen 2023-05-16 11:36:11 +02:00 коммит произвёл Takashi Iwai
Родитель 35a60d1edf
Коммит 77e067d0fa
2 изменённых файлов: 56 добавлений и 41 удалений
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8
include/sound/emu10k1.h
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@ -404,6 +404,14 @@ SUB_REG(HCFG, LOCKTANKCACHE, 0x00000004) /* 1 = Cancel bustmaster accesses to ta
// distortion), the modulation engine sets the target registers, towards
// which the current registers "swerve" gradually.
// For the odd channel in a stereo pair, these registers are meaningless:
// CPF_STEREO, CPF_CURRENTPITCH, PTRX_PITCHTARGET, CCR_CACHEINVALIDSIZE,
// PSST_LOOPSTARTADDR, DSL_LOOPENDADDR, CCCA_CURRADDR
// The somewhat non-obviously still meaningful ones are:
// CPF_STOP, CPF_FRACADDRESS, CCR_READADDRESS (!),
// CCCA_INTERPROM, CCCA_8BITSELECT (!)
// (The envelope engine is ignored here, as stereo matters only for verbatim playback.)
#define CPF 0x00 /* Current pitch and fraction register */
SUB_REG(CPF, CURRENTPITCH, 0xffff0000) /* Current pitch (linear, 0x4000 == unity pitch shift) */
#define CPF_STEREO_MASK 0x00008000 /* 1 = Even channel interleave, odd channel locked */

89
sound/pci/emu10k1/emupcm.c
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@ -301,12 +301,12 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu,
start_addr += ccis;
end_addr += ccis + emu->delay_pcm_irq;
}
if (stereo && !extra) {
snd_emu10k1_ptr_write(emu, CPF, voice, CPF_STEREO_MASK);
snd_emu10k1_ptr_write(emu, CPF, (voice + 1), CPF_STEREO_MASK);
} else {
snd_emu10k1_ptr_write(emu, CPF, voice, 0);
}
}
if (stereo && !extra) {
// Not really necessary for the slave, but it doesn't hurt
snd_emu10k1_ptr_write(emu, CPF, voice, CPF_STEREO_MASK);
} else {
snd_emu10k1_ptr_write(emu, CPF, voice, 0);
}
/* setup routing */
@ -325,6 +325,7 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu,
snd_emu10k1_compose_send_routing(send_routing));
/* Assumption that PT is already 0 so no harm overwriting */
snd_emu10k1_ptr_write(emu, PTRX, voice, (send_amount[0] << 8) | send_amount[1]);
// Stereo slaves don't need to have the addresses set, but it doesn't hurt
snd_emu10k1_ptr_write(emu, DSL, voice, end_addr | (send_amount[3] << 24));
snd_emu10k1_ptr_write(emu, PSST, voice,
(start_addr + (extra ? emu->delay_pcm_irq : 0)) |
@ -554,8 +555,6 @@ static void snd_emu10k1_playback_invalidate_cache(struct snd_emu10k1 *emu, int e
struct snd_pcm_runtime *runtime;
unsigned int voice, stereo, i, ccis, cra = 64, cs, sample;
if (evoice == NULL)
return;
runtime = evoice->epcm->substream->runtime;
voice = evoice->number;
stereo = (!extra && runtime->channels == 2);
@ -575,6 +574,7 @@ static void snd_emu10k1_playback_invalidate_cache(struct snd_emu10k1 *emu, int e
snd_emu10k1_ptr_write(emu, CCR_READADDRESS, voice, cra);
if (stereo) {
snd_emu10k1_ptr_write(emu, CCR_CACHEINVALIDSIZE, voice + 1, 0);
// The engine goes haywire if this one is out of sync
snd_emu10k1_ptr_write(emu, CCR_READADDRESS, voice + 1, cra);
}
/* fill cache */
@ -584,37 +584,49 @@ static void snd_emu10k1_playback_invalidate_cache(struct snd_emu10k1 *emu, int e
}
}
static void snd_emu10k1_playback_prepare_voice(struct snd_emu10k1 *emu, struct snd_emu10k1_voice *evoice,
int master,
struct snd_emu10k1_pcm_mixer *mix)
static void snd_emu10k1_playback_commit_volume(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice,
unsigned int vattn)
{
snd_emu10k1_ptr_write(emu, VTFT, evoice->number, vattn | VTFT_FILTERTARGET_MASK);
snd_emu10k1_ptr_write(emu, CVCF, evoice->number, vattn | CVCF_CURRENTFILTER_MASK);
}
static void snd_emu10k1_playback_unmute_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice,
bool master,
struct snd_emu10k1_pcm_mixer *mix)
{
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
unsigned int vattn;
unsigned int voice, tmp;
unsigned int tmp;
if (evoice == NULL) /* skip second voice for mono */
return;
substream = evoice->epcm->substream;
runtime = substream->runtime;
voice = evoice->number;
tmp = runtime->channels == 2 ? (master ? 1 : 2) : 0;
vattn = mix != NULL ? (mix->attn[tmp] << 16) : 0;
snd_emu10k1_ptr_write(emu, VTFT, voice, vattn | VTFT_FILTERTARGET_MASK);
snd_emu10k1_ptr_write(emu, CVCF, voice, vattn | CVCF_CURRENTFILTER_MASK);
vattn = mix->attn[tmp] << 16;
snd_emu10k1_playback_commit_volume(emu, evoice, vattn);
}
static void snd_emu10k1_playback_mute_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice)
{
if (evoice == NULL)
return;
snd_emu10k1_playback_commit_volume(emu, evoice, 0);
}
static void snd_emu10k1_playback_trigger_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice,
int master)
struct snd_emu10k1_voice *evoice)
{
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
unsigned int voice, pitch_target;
if (evoice == NULL) /* skip second voice for mono */
return;
substream = evoice->epcm->substream;
runtime = substream->runtime;
voice = evoice->number;
@ -624,8 +636,7 @@ static void snd_emu10k1_playback_trigger_voice(struct snd_emu10k1 *emu,
else
pitch_target = emu10k1_calc_pitch_target(runtime->rate);
snd_emu10k1_ptr_write(emu, PTRX_PITCHTARGET, voice, pitch_target);
if (master || evoice->epcm->type == PLAYBACK_EFX)
snd_emu10k1_ptr_write(emu, CPF_CURRENTPITCH, voice, pitch_target);
snd_emu10k1_ptr_write(emu, CPF_CURRENTPITCH, voice, pitch_target);
}
static void snd_emu10k1_playback_stop_voice(struct snd_emu10k1 *emu,
@ -633,13 +644,9 @@ static void snd_emu10k1_playback_stop_voice(struct snd_emu10k1 *emu,
{
unsigned int voice;
if (evoice == NULL)
return;
voice = evoice->number;
snd_emu10k1_ptr_write(emu, PTRX_PITCHTARGET, voice, 0);
snd_emu10k1_ptr_write(emu, CPF_CURRENTPITCH, voice, 0);
snd_emu10k1_ptr_write(emu, VTFT, voice, VTFT_FILTERTARGET_MASK);
snd_emu10k1_ptr_write(emu, CVCF, voice, CVCF_CURRENTFILTER_MASK);
}
static void snd_emu10k1_playback_set_running(struct snd_emu10k1 *emu,
@ -698,21 +705,20 @@ static int snd_emu10k1_playback_trigger(struct snd_pcm_substream *substream,
if (cmd == SNDRV_PCM_TRIGGER_PAUSE_RELEASE)
snd_emu10k1_playback_mangle_extra(emu, epcm, substream, runtime);
mix = &emu->pcm_mixer[substream->number];
snd_emu10k1_playback_prepare_voice(emu, epcm->voices[0], 1, mix);
snd_emu10k1_playback_prepare_voice(emu, epcm->voices[1], 0, mix);
snd_emu10k1_playback_prepare_voice(emu, epcm->extra, 1, NULL);
snd_emu10k1_playback_unmute_voice(emu, epcm->voices[0], true, mix);
snd_emu10k1_playback_unmute_voice(emu, epcm->voices[1], false, mix);
snd_emu10k1_playback_set_running(emu, epcm);
snd_emu10k1_playback_trigger_voice(emu, epcm->voices[0], 1);
snd_emu10k1_playback_trigger_voice(emu, epcm->voices[1], 0);
snd_emu10k1_playback_trigger_voice(emu, epcm->extra, 1);
snd_emu10k1_playback_trigger_voice(emu, epcm->voices[0]);
snd_emu10k1_playback_trigger_voice(emu, epcm->extra);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
case SNDRV_PCM_TRIGGER_SUSPEND:
snd_emu10k1_playback_stop_voice(emu, epcm->voices[0]);
snd_emu10k1_playback_stop_voice(emu, epcm->voices[1]);
snd_emu10k1_playback_stop_voice(emu, epcm->extra);
snd_emu10k1_playback_set_stopped(emu, epcm);
snd_emu10k1_playback_mute_voice(emu, epcm->voices[0]);
snd_emu10k1_playback_mute_voice(emu, epcm->voices[1]);
break;
default:
result = -EINVAL;
@ -844,16 +850,14 @@ static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream,
fallthrough;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
case SNDRV_PCM_TRIGGER_RESUME:
snd_emu10k1_playback_prepare_voice(emu, epcm->extra, 1, NULL);
snd_emu10k1_playback_prepare_voice(emu, epcm->voices[0], 0,
&emu->efx_pcm_mixer[0]);
for (i = 1; i < NUM_EFX_PLAYBACK; i++)
snd_emu10k1_playback_prepare_voice(emu, epcm->voices[i], 0,
&emu->efx_pcm_mixer[i]);
for (i = 0; i < NUM_EFX_PLAYBACK; i++)
snd_emu10k1_playback_unmute_voice(emu, epcm->voices[i], false,
&emu->efx_pcm_mixer[i]);
snd_emu10k1_playback_set_running(emu, epcm);
for (i = 0; i < NUM_EFX_PLAYBACK; i++)
snd_emu10k1_playback_trigger_voice(emu, epcm->voices[i], 0);
snd_emu10k1_playback_trigger_voice(emu, epcm->extra, 1);
snd_emu10k1_playback_trigger_voice(emu, epcm->voices[i]);
snd_emu10k1_playback_trigger_voice(emu, epcm->extra);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
@ -863,6 +867,9 @@ static int snd_emu10k1_efx_playback_trigger(struct snd_pcm_substream *substream,
}
snd_emu10k1_playback_stop_voice(emu, epcm->extra);
snd_emu10k1_playback_set_stopped(emu, epcm);
for (i = 0; i < NUM_EFX_PLAYBACK; i++)
snd_emu10k1_playback_mute_voice(emu, epcm->voices[i]);
break;
default:
result = -EINVAL;