Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / pci / au88x0 / au88x0_mixer.c

diff --git a/kernel/sound/pci/au88x0/au88x0_mixer.c b/kernel/sound/pci/au88x0/au88x0_mixer.c
new file mode 100644 (file)
index 0000000..a58298c
--- /dev/null
+++ b/kernel/sound/pci/au88x0/au88x0_mixer.c
@@ -0,0 +1,43 @@
+/*
+ * Vortex Mixer support.
+ *
+ * There is much more than just the AC97 mixer...
+ *
+ */
+
+#include <linux/time.h>
+#include <linux/init.h>
+#include <sound/core.h>
+#include "au88x0.h"
+
+static int remove_ctl(struct snd_card *card, const char *name)
+{
+       struct snd_ctl_elem_id id;
+       memset(&id, 0, sizeof(id));
+       strcpy(id.name, name);
+       id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+       return snd_ctl_remove_id(card, &id);
+}
+
+static int snd_vortex_mixer(vortex_t *vortex)
+{
+       struct snd_ac97_bus *pbus;
+       struct snd_ac97_template ac97;
+       int err;
+       static struct snd_ac97_bus_ops ops = {
+               .write = vortex_codec_write,
+               .read = vortex_codec_read,
+       };
+
+       if ((err = snd_ac97_bus(vortex->card, 0, &ops, NULL, &pbus)) < 0)
+               return err;
+       memset(&ac97, 0, sizeof(ac97));
+       // Initialize AC97 codec stuff.
+       ac97.private_data = vortex;
+       ac97.scaps = AC97_SCAP_NO_SPDIF;
+       err = snd_ac97_mixer(pbus, &ac97, &vortex->codec);
+       vortex->isquad = ((vortex->codec == NULL) ?  0 : (vortex->codec->ext_id&0x80));
+       remove_ctl(vortex->card, "Master Mono Playback Volume");
+       remove_ctl(vortex->card, "Master Mono Playback Switch");
+       return err;
+}