ALSA: 6fire - Add support of digital-thru mixer
Digital Thru mixer element added (device can act as converter optical<->coax)
Signed-off-by: Torsten Schenk <torsten.schenk@zoho.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/6fire/control.c b/sound/usb/6fire/control.c
index 2484635..ac828ef 100644
--- a/sound/usb/6fire/control.c
+++ b/sound/usb/6fire/control.c
@@ -65,6 +65,15 @@
{ 0 } /* TERMINATING ENTRY */
};
+static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 };
+/* values to write to soundcard register for all samplerates */
+static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01};
+static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00};
+
+enum {
+ DIGITAL_THRU_ONLY_SAMPLERATE = 3
+};
+
static void usb6fire_control_master_vol_update(struct control_runtime *rt)
{
struct comm_runtime *comm_rt = rt->chip->comm;
@@ -95,6 +104,67 @@
}
}
+static int usb6fire_control_set_rate(struct control_runtime *rt, int rate)
+{
+ int ret;
+ struct usb_device *device = rt->chip->dev;
+ struct comm_runtime *comm_rt = rt->chip->comm;
+
+ if (rate < 0 || rate >= CONTROL_N_RATES)
+ return -EINVAL;
+
+ ret = usb_set_interface(device, 1, rates_altsetting[rate]);
+ if (ret < 0)
+ return ret;
+
+ /* set soundcard clock */
+ ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rate],
+ rates_6fire_vh[rate]);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int usb6fire_control_set_channels(
+ struct control_runtime *rt, int n_analog_out,
+ int n_analog_in, bool spdif_out, bool spdif_in)
+{
+ int ret;
+ struct comm_runtime *comm_rt = rt->chip->comm;
+
+ /* enable analog inputs and outputs
+ * (one bit per stereo-channel) */
+ ret = comm_rt->write16(comm_rt, 0x02, 0x02,
+ (1 << (n_analog_out / 2)) - 1,
+ (1 << (n_analog_in / 2)) - 1);
+ if (ret < 0)
+ return ret;
+
+ /* disable digital inputs and outputs */
+ /* TODO: use spdif_x to enable/disable digital channels */
+ ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int usb6fire_control_streaming_update(struct control_runtime *rt)
+{
+ struct comm_runtime *comm_rt = rt->chip->comm;
+
+ if (comm_rt) {
+ if (!rt->usb_streaming && rt->digital_thru_switch)
+ usb6fire_control_set_rate(rt,
+ DIGITAL_THRU_ONLY_SAMPLERATE);
+ return comm_rt->write16(comm_rt, 0x02, 0x00, 0x00,
+ (rt->usb_streaming ? 0x01 : 0x00) |
+ (rt->digital_thru_switch ? 0x08 : 0x00));
+ }
+ return -EINVAL;
+}
+
static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
@@ -195,6 +265,28 @@
return 0;
}
+static int usb6fire_control_digital_thru_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ int changed = 0;
+
+ if (rt->digital_thru_switch != ucontrol->value.integer.value[0]) {
+ rt->digital_thru_switch = ucontrol->value.integer.value[0];
+ usb6fire_control_streaming_update(rt);
+ changed = 1;
+ }
+ return changed;
+}
+
+static int usb6fire_control_digital_thru_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
+ ucontrol->value.integer.value[0] = rt->digital_thru_switch;
+ return 0;
+}
+
static struct __devinitdata snd_kcontrol_new elements[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
@@ -223,6 +315,15 @@
.get = usb6fire_control_opt_coax_get,
.put = usb6fire_control_opt_coax_put
},
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Digital Thru Playback Route",
+ .index = 0,
+ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
+ .info = snd_ctl_boolean_mono_info,
+ .get = usb6fire_control_digital_thru_get,
+ .put = usb6fire_control_digital_thru_put
+ },
{}
};
@@ -238,6 +339,9 @@
return -ENOMEM;
rt->chip = chip;
+ rt->update_streaming = usb6fire_control_streaming_update;
+ rt->set_rate = usb6fire_control_set_rate;
+ rt->set_channels = usb6fire_control_set_channels;
i = 0;
while (init_data[i].type) {
@@ -249,6 +353,7 @@
usb6fire_control_opt_coax_update(rt);
usb6fire_control_line_phono_update(rt);
usb6fire_control_master_vol_update(rt);
+ usb6fire_control_streaming_update(rt);
i = 0;
while (elements[i].name) {