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ALSA: emu10k1: fix sample rates for E-MU cards at 44.1 kHz word clock 

Now that we know the actual word clock, we can:
- Put the resulting rate into the hardware info
- At 44.1 kHz word clock shift the rate for the pitch calculations,
  which presume a 48 kHz word clock

Signed-off-by: Oswald Buddenhagen <oswald.buddenhagen@gmx.de>
Link: https://lore.kernel.org/r/20230612191325.1315854-5-oswald.buddenhagen@gmx.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Oswald Buddenhagen 2023-06-12 21:13:20 +02:00 committed by Takashi Iwai
parent e73b597e63
commit 19b89d15fa
2 changed files with 56 additions and 57 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/sound/emu10k1.h
View File

@ -1495,6 +1495,7 @@ struct snd_emu10k1_pcm {
unsigned short first_ptr;
snd_pcm_uframes_t resume_pos;
struct snd_util_memblk *memblk;
unsigned int pitch_target;
unsigned int start_addr;
unsigned int ccca_start_addr;
unsigned int capture_ipr; /* interrupt acknowledge mask */

112
sound/pci/emu10k1/emupcm.c
View File

@ -195,6 +195,33 @@ static unsigned int snd_emu10k1_audigy_capture_rate_reg(unsigned int rate)
}
}
static void snd_emu10k1_constrain_capture_rates(struct snd_emu10k1 *emu,
struct snd_pcm_runtime *runtime)
{
if (emu->card_capabilities->emu_model &&
emu->emu1010.word_clock == 44100) {
// This also sets the rate constraint by deleting SNDRV_PCM_RATE_KNOT
runtime->hw.rates = SNDRV_PCM_RATE_11025 | \
SNDRV_PCM_RATE_22050 | \
SNDRV_PCM_RATE_44100;
runtime->hw.rate_min = 11025;
runtime->hw.rate_max = 44100;
return;
}
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_capture_rates);
}
static void snd_emu1010_constrain_efx_rate(struct snd_emu10k1 *emu,
struct snd_pcm_runtime *runtime)
{
int rate;
rate = emu->emu1010.word_clock;
runtime->hw.rate_min = runtime->hw.rate_max = rate;
runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
}
static unsigned int emu10k1_calc_pitch_target(unsigned int rate)
{
unsigned int pitch_target;
@ -251,18 +278,11 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu,
const unsigned char *send_routing,
const unsigned char *send_amount)
{
struct snd_pcm_substream *substream = evoice->epcm->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int silent_page;
int voice;
unsigned int pitch_target;
voice = evoice->number;
if (emu->card_capabilities->emu_model)
pitch_target = PITCH_48000; /* Disable interpolators on emu1010 card */
else
pitch_target = emu10k1_calc_pitch_target(runtime->rate);
silent_page = ((unsigned int)emu->silent_page.addr << emu->address_mode) |
(emu->address_mode ? MAP_PTI_MASK1 : MAP_PTI_MASK0);
snd_emu10k1_ptr_write_multiple(emu, voice,
@ -273,7 +293,7 @@ static void snd_emu10k1_pcm_init_voice(struct snd_emu10k1 *emu,
// Stereo slaves don't need to have the addresses set, but it doesn't hurt
DSL, end_addr | (send_amount[3] << 24),
PSST, start_addr | (send_amount[2] << 24),
CCCA, emu10k1_select_interprom(pitch_target) |
CCCA, emu10k1_select_interprom(evoice->epcm->pitch_target) |
(w_16 ? 0 : CCCA_8BITSELECT),
// Clear filter delay memory
Z1, 0,
@ -419,6 +439,13 @@ static int snd_emu10k1_playback_prepare(struct snd_pcm_substream *substream)
bool w_16 = snd_pcm_format_width(runtime->format) == 16;
bool stereo = runtime->channels == 2;
unsigned int start_addr, end_addr;
unsigned int rate;
rate = runtime->rate;
if (emu->card_capabilities->emu_model &&
emu->emu1010.word_clock == 44100)
rate = rate * 480 / 441;
epcm->pitch_target = emu10k1_calc_pitch_target(rate);
start_addr = epcm->start_addr >> w_16;
end_addr = start_addr + runtime->period_size;
@ -443,6 +470,8 @@ static int snd_emu10k1_efx_playback_prepare(struct snd_pcm_substream *substream)
unsigned int extra_size, channel_size;
unsigned int i;
epcm->pitch_target = PITCH_48000;
start_addr = epcm->start_addr >> 1; // 16-bit voices
extra_size = runtime->period_size;
@ -526,12 +555,16 @@ static int snd_emu10k1_capture_prepare(struct snd_pcm_substream *substream)
epcm->capture_bs_val++;
}
if (epcm->type == CAPTURE_AC97ADC) {
unsigned rate = runtime->rate;
if (!(runtime->hw.rates & SNDRV_PCM_RATE_48000))
rate = rate * 480 / 441;
epcm->capture_cr_val = emu->audigy ? A_ADCCR_LCHANENABLE : ADCCR_LCHANENABLE;
if (runtime->channels > 1)
epcm->capture_cr_val |= emu->audigy ? A_ADCCR_RCHANENABLE : ADCCR_RCHANENABLE;
epcm->capture_cr_val |= emu->audigy ?
snd_emu10k1_audigy_capture_rate_reg(runtime->rate) :
snd_emu10k1_capture_rate_reg(runtime->rate);
snd_emu10k1_audigy_capture_rate_reg(rate) :
snd_emu10k1_capture_rate_reg(rate);
}
return 0;
}
@ -670,19 +703,10 @@ static void snd_emu10k1_playback_commit_pitch(struct snd_emu10k1 *emu,
static void snd_emu10k1_playback_trigger_voice(struct snd_emu10k1 *emu,
struct snd_emu10k1_voice *evoice)
{
struct snd_pcm_substream *substream;
struct snd_pcm_runtime *runtime;
unsigned int voice, pitch_target;
unsigned int voice;
substream = evoice->epcm->substream;
runtime = substream->runtime;
voice = evoice->number;
if (emu->card_capabilities->emu_model)
pitch_target = PITCH_48000; /* Disable interpolators on emu1010 card */
else
pitch_target = emu10k1_calc_pitch_target(runtime->rate);
snd_emu10k1_playback_commit_pitch(emu, voice, pitch_target << 16);
snd_emu10k1_playback_commit_pitch(emu, voice, evoice->epcm->pitch_target << 16);
}
static void snd_emu10k1_playback_stop_voice(struct snd_emu10k1 *emu,
@ -1043,11 +1067,9 @@ static const struct snd_pcm_hardware snd_emu10k1_capture_efx =
SNDRV_PCM_INFO_RESUME |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = SNDRV_PCM_FMTBIT_S16_LE,
.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000,
.rate_min = 44100,
.rate_max = 192000,
.rates = SNDRV_PCM_RATE_48000,
.rate_min = 48000,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 16,
.buffer_bytes_max = (64*1024),
@ -1144,6 +1166,8 @@ static int snd_emu10k1_efx_playback_open(struct snd_pcm_substream *substream)
runtime->private_data = epcm;
runtime->private_free = snd_emu10k1_pcm_free_substream;
runtime->hw = snd_emu10k1_efx_playback;
if (emu->card_capabilities->emu_model)
snd_emu1010_constrain_efx_rate(emu, runtime);
err = snd_emu10k1_playback_set_constraints(runtime);
if (err < 0) {
kfree(epcm);
@ -1185,8 +1209,8 @@ static int snd_emu10k1_playback_open(struct snd_pcm_substream *substream)
kfree(epcm);
return err;
}
if (emu->card_capabilities->emu_model && emu->emu1010.clock_source == 0)
sample_rate = 44100;
if (emu->card_capabilities->emu_model)
sample_rate = emu->emu1010.word_clock;
else
sample_rate = 48000;
err = snd_pcm_hw_rule_noresample(runtime, sample_rate);
@ -1236,11 +1260,11 @@ static int snd_emu10k1_capture_open(struct snd_pcm_substream *substream)
runtime->private_data = epcm;
runtime->private_free = snd_emu10k1_pcm_free_substream;
runtime->hw = snd_emu10k1_capture;
snd_emu10k1_constrain_capture_rates(emu, runtime);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
&hw_constraints_capture_buffer_sizes);
emu->capture_interrupt = snd_emu10k1_pcm_ac97adc_interrupt;
emu->pcm_capture_substream = substream;
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_capture_rates);
return 0;
}
@ -1313,17 +1337,9 @@ static int snd_emu10k1_capture_efx_open(struct snd_pcm_substream *substream)
substream->runtime->private_data = epcm;
substream->runtime->private_free = snd_emu10k1_pcm_free_substream;
runtime->hw = snd_emu10k1_capture_efx;
runtime->hw.rates = SNDRV_PCM_RATE_48000;
runtime->hw.rate_min = runtime->hw.rate_max = 48000;
if (emu->card_capabilities->emu_model) {
/* TODO
* SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |
* SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000 |
* SNDRV_PCM_RATE_176400 | SNDRV_PCM_RATE_192000
* rate_min = 44100,
* rate_max = 192000,
* Need to add mixer control to fix sample rate
*
snd_emu1010_constrain_efx_rate(emu, runtime);
/*
* There are 32 mono channels of 16bits each.
* 24bit Audio uses 2x channels over 16bit,
* 96kHz uses 2x channels over 48kHz,
@ -1334,30 +1350,12 @@ static int snd_emu10k1_capture_efx_open(struct snd_pcm_substream *substream)
* 1010rev2 and 1616(m) cards have double that,
* but we don't exceed 16 channels anyway.
*/
#if 1
switch (emu->emu1010.clock_source) {
case 0:
/* For 44.1kHz */
runtime->hw.rates = SNDRV_PCM_RATE_44100;
runtime->hw.rate_min = runtime->hw.rate_max = 44100;
break;
case 1:
/* For 48kHz */
runtime->hw.rates = SNDRV_PCM_RATE_48000;
runtime->hw.rate_min = runtime->hw.rate_max = 48000;
break;
}
#endif
#if 0
/* For 96kHz */
runtime->hw.rates = SNDRV_PCM_RATE_96000;
runtime->hw.rate_min = runtime->hw.rate_max = 96000;
runtime->hw.channels_min = runtime->hw.channels_max = 4;
#endif
#if 0
/* For 192kHz */
runtime->hw.rates = SNDRV_PCM_RATE_192000;
runtime->hw.rate_min = runtime->hw.rate_max = 192000;
runtime->hw.channels_min = runtime->hw.channels_max = 2;
#endif
runtime->hw.formats = SNDRV_PCM_FMTBIT_S32_LE;