[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>
diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index a673cc4..0db558a 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -445,6 +445,7 @@
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 @@
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_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_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 @@
*/
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 @@
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,