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[ALSA] cmipci at 96kHz
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This patch adds support for 88.2k, 96k, and 128k samplerates
on cmi8738-55 chip.
Analog playback works fine on all channels.
Analog capture works well too, though the extra samples seems
interpolated by hardware.
spdif playback and capture works fine.

Signed-off-by: Timofei Bondarenko <tim@ipi.ac.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Timofei Bondarenko authored and Jaroslav Kysela committed Jan 31, 2008
1 parent f889fa9 commit 755c48a
Showing 1 changed file with 64 additions and 19 deletions.
83 changes: 64 additions & 19 deletions sound/pci/cmipci.c
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Original file line number Diff line number Diff line change
Expand Up @@ -150,6 +150,8 @@ MODULE_PARM_DESC(joystick_port, "Joystick port address.");
#define CM_CH0_SRATE_176K 0x00000200
#define CM_CH0_SRATE_96K 0x00000200 /* model 055? */
#define CM_CH0_SRATE_88K 0x00000100
#define CM_CH0_SRATE_128K 0x00000300
#define CM_CH0_SRATE_MASK 0x00000300

#define CM_SPDIF_INVERSE2 0x00000080 /* model 055? */
#define CM_DBLSPDS 0x00000040 /* double SPDIF sample rate 88.2/96 */
Expand Down Expand Up @@ -473,6 +475,7 @@ struct cmipci {
unsigned int can_ac3_sw: 1;
unsigned int can_ac3_hw: 1;
unsigned int can_multi_ch: 1;
unsigned int can_96k: 1; /* samplerate above 48k */
unsigned int do_soft_ac3: 1;

unsigned int spdif_playback_avail: 1; /* spdif ready? */
Expand Down Expand Up @@ -603,8 +606,6 @@ static unsigned int snd_cmipci_rate_freq(unsigned int rate)
{
unsigned int i;

if (rate > 48000)
rate /= 2;
for (i = 0; i < ARRAY_SIZE(rates); i++) {
if (rates[i] == rate)
return i;
Expand Down Expand Up @@ -782,7 +783,7 @@ static int set_dac_channels(struct cmipci *cm, struct cmipci_pcm *rec, int chann
static int snd_cmipci_pcm_prepare(struct cmipci *cm, struct cmipci_pcm *rec,
struct snd_pcm_substream *substream)
{
unsigned int reg, freq, val;
unsigned int reg, freq, freq_ext, val;
unsigned int period_size;
struct snd_pcm_runtime *runtime = substream->runtime;

Expand Down Expand Up @@ -830,7 +831,17 @@ static int snd_cmipci_pcm_prepare(struct cmipci *cm, struct cmipci_pcm *rec,
//snd_printd("cmipci: functrl0 = %08x\n", cm->ctrl);

/* set sample rate */
freq = snd_cmipci_rate_freq(runtime->rate);
freq = 0;
freq_ext = 0;
if (runtime->rate > 48000)
switch (runtime->rate) {
case 88200: freq_ext = CM_CH0_SRATE_88K; break;
case 96000: freq_ext = CM_CH0_SRATE_96K; break;
case 128000: freq_ext = CM_CH0_SRATE_128K; break;
default: snd_BUG(); break;
}
else
freq = snd_cmipci_rate_freq(runtime->rate);
val = snd_cmipci_read(cm, CM_REG_FUNCTRL1);
if (rec->ch) {
val &= ~CM_DSFC_MASK;
Expand All @@ -851,15 +862,9 @@ static int snd_cmipci_pcm_prepare(struct cmipci *cm, struct cmipci_pcm *rec,
val &= ~CM_CH0FMT_MASK;
val |= rec->fmt << CM_CH0FMT_SHIFT;
}
if (cm->chip_version == 68) {
if (runtime->rate == 88200)
val |= CM_CH0_SRATE_88K << (rec->ch * 2);
else
val &= ~(CM_CH0_SRATE_88K << (rec->ch * 2));
if (runtime->rate == 96000)
val |= CM_CH0_SRATE_96K << (rec->ch * 2);
else
val &= ~(CM_CH0_SRATE_96K << (rec->ch * 2));
if (cm->can_96k) {
val &= ~(CM_CH0_SRATE_MASK << (rec->ch * 2));
val |= freq_ext << (rec->ch * 2);
}
snd_cmipci_write(cm, CM_REG_CHFORMAT, val);
//snd_printd("cmipci: chformat = %08x\n", val);
Expand Down Expand Up @@ -1280,7 +1285,7 @@ static int snd_cmipci_playback_prepare(struct snd_pcm_substream *substream)
int rate = substream->runtime->rate;
int err, do_spdif, do_ac3 = 0;

do_spdif = (rate >= 44100 &&
do_spdif = (rate >= 44100 && rate <= 96000 &&
substream->runtime->format == SNDRV_PCM_FORMAT_S16_LE &&
substream->runtime->channels == 2);
if (do_spdif && cm->can_ac3_hw)
Expand Down Expand Up @@ -1336,10 +1341,8 @@ static void snd_cmipci_silence_hack(struct cmipci *cm, struct cmipci_pcm *rec)
val = snd_cmipci_read(cm, CM_REG_CHFORMAT);
val &= ~(CM_CH0FMT_MASK << (rec->ch * 2));
val |= (3 << CM_CH0FMT_SHIFT) << (rec->ch * 2);
if (cm->chip_version == 68) {
val &= ~(CM_CH0_SRATE_88K << (rec->ch * 2));
val &= ~(CM_CH0_SRATE_96K << (rec->ch * 2));
}
if (cm->can_96k)
val &= ~(CM_CH0_SRATE_MASK << (rec->ch * 2));
snd_cmipci_write(cm, CM_REG_CHFORMAT, val);

/* start stream (we don't need interrupts) */
Expand Down Expand Up @@ -1391,6 +1394,12 @@ static int snd_cmipci_capture_spdif_prepare(struct snd_pcm_substream *substream)

spin_lock_irq(&cm->reg_lock);
snd_cmipci_set_bit(cm, CM_REG_FUNCTRL1, CM_CAPTURE_SPDF);
if (cm->can_96k) {
if (substream->runtime->rate > 48000)
snd_cmipci_set_bit(cm, CM_REG_CHFORMAT, CM_DBLSPDS);
else
snd_cmipci_clear_bit(cm, CM_REG_CHFORMAT, CM_DBLSPDS);
}
spin_unlock_irq(&cm->reg_lock);

return snd_cmipci_pcm_prepare(cm, &cm->channel[CM_CH_CAPT], substream);
Expand Down Expand Up @@ -1567,6 +1576,14 @@ static struct snd_pcm_hardware snd_cmipci_capture_spdif =
.fifo_size = 0,
};

static unsigned int rate_constraints[] = { 5512, 8000, 11025, 16000, 22050,
32000, 44100, 48000, 88200, 96000, 128000 };
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = ARRAY_SIZE(rate_constraints),
.list = rate_constraints,
.mask = 0,
};

/*
* check device open/close
*/
Expand Down Expand Up @@ -1636,6 +1653,13 @@ static int snd_cmipci_playback_open(struct snd_pcm_substream *substream)
runtime->hw.rates |= SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000;
runtime->hw.rate_max = 96000;
} else if (cm->chip_version == 55) {
err = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
if (err < 0)
return err;
runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
runtime->hw.rate_max = 128000;
}
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 0x10000);
cm->dig_pcm_status = cm->dig_status;
Expand All @@ -1654,6 +1678,13 @@ static int snd_cmipci_capture_open(struct snd_pcm_substream *substream)
if (cm->chip_version == 68) { // 8768 only supports 44k/48k recording
runtime->hw.rate_min = 41000;
runtime->hw.rates = SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000;
} else if (cm->chip_version == 55) {
err = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
if (err < 0)
return err;
runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
runtime->hw.rate_max = 128000;
}
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 0x10000);
return 0;
Expand Down Expand Up @@ -1685,6 +1716,13 @@ static int snd_cmipci_playback2_open(struct snd_pcm_substream *substream)
runtime->hw.rates |= SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000;
runtime->hw.rate_max = 96000;
} else if (cm->chip_version == 55) {
err = snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
if (err < 0)
return err;
runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
runtime->hw.rate_max = 128000;
}
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 0x10000);
return 0;
Expand All @@ -1704,7 +1742,7 @@ static int snd_cmipci_playback_spdif_open(struct snd_pcm_substream *substream)
runtime->hw.formats |= SNDRV_PCM_FMTBIT_S32_LE;
snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
}
if (cm->chip_version == 68) {
if (cm->can_96k) {
runtime->hw.rates |= SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000;
runtime->hw.rate_max = 96000;
Expand All @@ -1726,6 +1764,11 @@ static int snd_cmipci_capture_spdif_open(struct snd_pcm_substream *substream)
if ((err = open_device_check(cm, CM_OPEN_SPDIF_CAPTURE, substream)) < 0) /* use channel B */
return err;
runtime->hw = snd_cmipci_capture_spdif;
if (cm->can_96k && !(cm->chip_version == 68)) {
runtime->hw.rates |= SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000;
runtime->hw.rate_max = 96000;
}
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 0, 0x40000);
return 0;
}
Expand Down Expand Up @@ -2785,9 +2828,11 @@ static void __devinit query_chip(struct cmipci *cm)
} else if (detect & CM_CHIP_8768) {
cm->chip_version = 68;
cm->max_channels = 8;
cm->can_96k = 1;
} else {
cm->chip_version = 55;
cm->max_channels = 6;
cm->can_96k = 1;
}
cm->can_ac3_hw = 1;
cm->can_multi_ch = 1;
Expand Down

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