ALSA: usb-audio - Added functionality for E-mu 0404USB/0202USB/TrackerPre

[pandora-kernel.git] / sound / usb / usbmixer.c

diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index c998220..f5596cf 100644 (file)
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -186,6 +186,21 @@ enum {
        USB_PROC_DCR_RELEASE = 6,
 };
 
+/*E-mu 0202(0404) eXtension Unit(XU) control*/
+enum {
+       USB_XU_CLOCK_RATE               = 0xe301,
+       USB_XU_CLOCK_SOURCE             = 0xe302,
+       USB_XU_DIGITAL_IO_STATUS        = 0xe303,
+       USB_XU_DEVICE_OPTIONS           = 0xe304,
+       USB_XU_DIRECT_MONITORING        = 0xe305,
+       USB_XU_METERING                 = 0xe306
+};
+enum {
+       USB_XU_CLOCK_SOURCE_SELECTOR = 0x02,    /* clock source*/
+       USB_XU_CLOCK_RATE_SELECTOR = 0x03,      /* clock rate */
+       USB_XU_DIGITAL_FORMAT_SELECTOR = 0x01,  /* the spdif format */
+       USB_XU_SOFT_LIMIT_SELECTOR = 0x03       /* soft limiter */
+};
 
 /*
  * manual mapping of mixer names
@@ -1330,7 +1345,32 @@ static struct procunit_info procunits[] = {
        { USB_PROC_DCR, "DCR", dcr_proc_info },
        { 0 },
 };
-
+/*
+ * predefined data for extension units
+ */
+static struct procunit_value_info clock_rate_xu_info[] = {
+       { USB_XU_CLOCK_RATE_SELECTOR, "Selector", USB_MIXER_U8, 0 },
+       { 0 }
+};
+static struct procunit_value_info clock_source_xu_info[] = {
+       { USB_XU_CLOCK_SOURCE_SELECTOR, "External", USB_MIXER_BOOLEAN },
+       { 0 }
+};
+static struct procunit_value_info spdif_format_xu_info[] = {
+       { USB_XU_DIGITAL_FORMAT_SELECTOR, "SPDIF/AC3", USB_MIXER_BOOLEAN },
+       { 0 }
+};
+static struct procunit_value_info soft_limit_xu_info[] = {
+       { USB_XU_SOFT_LIMIT_SELECTOR, " ", USB_MIXER_BOOLEAN },
+       { 0 }
+};
+static struct procunit_info extunits[] = {
+       { USB_XU_CLOCK_RATE, "Clock rate", clock_rate_xu_info },
+       { USB_XU_CLOCK_SOURCE, "DigitalIn CLK source", clock_source_xu_info },
+       { USB_XU_DIGITAL_IO_STATUS, "DigitalOut format:", spdif_format_xu_info },
+       { USB_XU_DEVICE_OPTIONS, "AnalogueIn Soft Limit", soft_limit_xu_info },
+       { 0 }
+};
 /*
  * build a processing/extension unit
  */
@@ -1391,8 +1431,18 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, unsigned
                        cval->max = dsc[15];
                        cval->res = 1;
                        cval->initialized = 1;
-               } else
-                       get_min_max(cval, valinfo->min_value);
+               } else {
+                       if (type == USB_XU_CLOCK_RATE) {
+                               /* E-Mu USB 0404/0202/TrackerPre
+                                * samplerate control quirk
+                                */
+                               cval->min = 0;
+                               cval->max = 5;
+                               cval->res = 1;
+                               cval->initialized = 1;
+                       } else
+                               get_min_max(cval, valinfo->min_value);
+               }
 
                kctl = snd_ctl_new1(&mixer_procunit_ctl, cval);
                if (! kctl) {
@@ -1433,7 +1483,7 @@ static int parse_audio_processing_unit(struct mixer_build *state, int unitid, un
 
 static int parse_audio_extension_unit(struct mixer_build *state, int unitid, unsigned char *desc)
 {
-       return build_audio_procunit(state, unitid, desc, NULL, "Extension Unit");
+       return build_audio_procunit(state, unitid, desc, extunits, "Extension Unit");
 }
 
 
@@ -2109,6 +2159,23 @@ static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer)
        return 0;
 }
 
+void snd_emuusb_set_samplerate(struct snd_usb_audio *chip,
+               unsigned char samplerate_id)
+{
+        struct usb_mixer_interface *mixer;
+        struct usb_mixer_elem_info *cval;
+        int unitid = 12; /* SamleRate ExtensionUnit ID */
+
+        list_for_each_entry(mixer, &chip->mixer_list, list) {
+                cval = mixer->id_elems[unitid];
+                if (cval) {
+                       set_cur_ctl_value(cval, cval->control << 8, samplerate_id);
+                       snd_usb_mixer_notify_id(mixer, unitid);
+                }
+                break;
+        }
+}
+
 int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif,
                         int ignore_error)
 {