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[ALSA] hdsp - Add 'Sample Clock Source Locking' control 

RME HDSP driver
Added 'Sample Clock Source Locking' control.  If this switch is on,
the clock source can't be changed via PCM hw_params API (as sample rate).
This will fix the problem of OSS-emulation, for example.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2005-07-04 18:12:39 +02:00 committed by Jaroslav Kysela
parent 4e55096e27
commit e3ea4d8961
1 changed files with 53 additions and 9 deletions
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62
sound/pci/rme9652/hdsp.c
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@ -445,6 +445,7 @@ struct _hdsp {
u32 control2_register; /* cached value */
u32 creg_spdif;
u32 creg_spdif_stream;
int clock_source_locked;
char *card_name; /* digiface/multiface */
HDSP_IO_Type io_type; /* ditto, but for code use */
unsigned short firmware_rev;
@ -2095,6 +2096,34 @@ static int snd_hdsp_put_clock_source(snd_kcontrol_t * kcontrol, snd_ctl_elem_val
return change;
}
static int snd_hdsp_info_clock_source_lock(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int snd_hdsp_get_clock_source_lock(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = hdsp->clock_source_locked;
return 0;
}
static int snd_hdsp_put_clock_source_lock(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
{
hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
int change;
change = (int)ucontrol->value.integer.value[0] != hdsp->clock_source_locked;
if (change)
hdsp->clock_source_locked = ucontrol->value.integer.value[0];
return change;
}
#define HDSP_DA_GAIN(xname, xindex) \
{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
.name = xname, \
@ -3117,6 +3146,15 @@ HDSP_SPDIF_EMPHASIS("IEC958 Emphasis Bit", 0),
HDSP_SPDIF_NON_AUDIO("IEC958 Non-audio Bit", 0),
/* 'Sample Clock Source' complies with the alsa control naming scheme */
HDSP_CLOCK_SOURCE("Sample Clock Source", 0),
{
/* FIXME: should be PCM or MIXER? */
/* .iface = SNDRV_CTL_ELEM_IFACE_PCM, */
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Sample Clock Source Locking",
.info = snd_hdsp_info_clock_source_lock,
.get = snd_hdsp_get_clock_source_lock,
.put = snd_hdsp_put_clock_source_lock,
},
HDSP_SYSTEM_CLOCK_MODE("System Clock Mode", 0),
HDSP_PREF_SYNC_REF("Preferred Sync Reference", 0),
HDSP_AUTOSYNC_REF("AutoSync Reference", 0),
@ -3349,6 +3387,7 @@ snd_hdsp_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
snd_iprintf (buffer, "System Clock Mode: %s\n", system_clock_mode);
snd_iprintf (buffer, "System Clock Frequency: %d\n", hdsp->system_sample_rate);
snd_iprintf (buffer, "System Clock Locked: %s\n", hdsp->clock_source_locked ? "Yes" : "No");
snd_iprintf(buffer, "\n");
@ -3853,13 +3892,14 @@ static int snd_hdsp_hw_params(snd_pcm_substream_t *substream,
*/
spin_lock_irq(&hdsp->lock);
if ((err = hdsp_set_rate(hdsp, params_rate(params), 0)) < 0) {
spin_unlock_irq(&hdsp->lock);
_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
return err;
} else {
spin_unlock_irq(&hdsp->lock);
if (! hdsp->clock_source_locked) {
if ((err = hdsp_set_rate(hdsp, params_rate(params), 0)) < 0) {
spin_unlock_irq(&hdsp->lock);
_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
return err;
}
}
spin_unlock_irq(&hdsp->lock);
if ((err = hdsp_set_interrupt_interval(hdsp, params_period_size(params))) < 0) {
_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
@ -4284,13 +4324,17 @@ static int snd_hdsp_playback_open(snd_pcm_substream_t *substream)
snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hdsp_hw_constraints_period_sizes);
if (hdsp->io_type == H9632) {
runtime->hw.channels_min = hdsp->qs_out_channels;
runtime->hw.channels_max = hdsp->ss_out_channels;
if (hdsp->clock_source_locked) {
runtime->hw.rate_min = runtime->hw.rate_max = hdsp->system_sample_rate;
} else if (hdsp->io_type == H9632) {
runtime->hw.rate_max = 192000;
runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hdsp_hw_constraints_9632_sample_rates);
}
if (hdsp->io_type == H9632) {
runtime->hw.channels_min = hdsp->qs_out_channels;
runtime->hw.channels_max = hdsp->ss_out_channels;
}
snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
snd_hdsp_hw_rule_out_channels, hdsp,