ALSA: pcxhr - add support for gpio ports and minor bug fix

- add support for gpio ports (2 GPI, 2 GPO) of pcxhr stereo cards
- minor bugfixes : allow setting clock to internal by the mixer
                   even if there is no stream (but monitoring)

Signed-off-by: Markus Bollinger <bollinger@digigram.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 6 insertions, 2 deletions

diff --git a/sound/pci/pcxhr/pcxhr_mixer.c b/sound/pci/pcxhr/pcxhr_mixer.c
index 2436e374586f..fec049344621 100644
--- a/sound/pci/pcxhr/pcxhr_mixer.c
+++ b/sound/pci/pcxhr/pcxhr_mixer.c
@@ -789,11 +789,15 @@ static int pcxhr_clock_type_put(struct snd_kcontrol *kcontrol,
         if (mgr->use_clock_type != ucontrol->value.enumerated.item[0]) {
                 mutex_lock(&mgr->setup_mutex);
                 mgr->use_clock_type = ucontrol->value.enumerated.item[0];
-                if (mgr->use_clock_type)
+                rate = 0;
+                if (mgr->use_clock_type != PCXHR_CLOCK_TYPE_INTERNAL) {
                         pcxhr_get_external_clock(mgr, mgr->use_clock_type,
                                                  &rate);
-                else
+                } else {
                         rate = mgr->sample_rate;
+                        if (!rate)
+                                rate = 48000;
+                }
                 if (rate) {
                         pcxhr_set_clock(mgr, rate);
                         if (mgr->sample_rate)