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authorSergiy Kovalchuk <cnb_zerg@yahoo.com>2009-12-27 09:13:41 -0800
committerTakashi Iwai <tiwai@suse.de>2009-12-28 12:29:39 +0100
commit7d2b451e65d255427c108e990507964ac39c13ee (patch)
tree86e977405ae88b08fa74dff3202c9f88207dfacb /sound/usb/usbaudio.c
parent44eba3e82b35ae796826a65d8040001582adc10a (diff)
ALSA: usb-audio - Added functionality for E-mu 0404USB/0202USB/TrackerPre
Added functionality: 1) Extension Units support (all XU settings now available at alsamixer, kmix, etc): - "AnalogueIn soft limiter" switch; - "Sample rate" selector (values 0,1,2,3,4,5 corresponds to 44.1 48 ... 192 kHz); - "DigitalIn CLK source" selector (internal/external) (**); - "DigitalOut format SPDIF/AC3" switch (**); (**)E-mu-0404usb only. 2) Automatic device sample rate adjustment depending on substream samplerate for both capture and playback substream. [minor coding-style fixes by tiwai] Signed-off-by: Sergiy Kovalchuk <cnb_zerg@yahoo.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.c')
-rw-r--r--sound/usb/usbaudio.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 31b63ea098b7..286fa14e48bd 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1271,6 +1271,47 @@ static int init_usb_sample_rate(struct usb_device *dev, int iface,
}
/*
+ * For E-Mu 0404USB/0202USB/TrackerPre sample rate should be set for device,
+ * not for interface.
+ */
+static void set_format_emu_quirk(struct snd_usb_substream *subs,
+ struct audioformat *fmt)
+{
+ unsigned char emu_samplerate_id = 0;
+
+ /* When capture is active
+ * sample rate shouldn't be changed
+ * by playback substream
+ */
+ if (subs->direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (subs->stream->substream[SNDRV_PCM_STREAM_CAPTURE].interface != -1)
+ return;
+ }
+
+ switch (fmt->rate_min) {
+ case 48000:
+ emu_samplerate_id = EMU_QUIRK_SR_48000HZ;
+ break;
+ case 88200:
+ emu_samplerate_id = EMU_QUIRK_SR_88200HZ;
+ break;
+ case 96000:
+ emu_samplerate_id = EMU_QUIRK_SR_96000HZ;
+ break;
+ case 176400:
+ emu_samplerate_id = EMU_QUIRK_SR_176400HZ;
+ break;
+ case 192000:
+ emu_samplerate_id = EMU_QUIRK_SR_192000HZ;
+ break;
+ default:
+ emu_samplerate_id = EMU_QUIRK_SR_44100HZ;
+ break;
+ }
+ snd_emuusb_set_samplerate(subs->stream->chip, emu_samplerate_id);
+}
+
+/*
* find a matching format and set up the interface
*/
static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
@@ -1383,6 +1424,14 @@ static int set_format(struct snd_usb_substream *subs, struct audioformat *fmt)
subs->cur_audiofmt = fmt;
+ switch (subs->stream->chip->usb_id) {
+ case USB_ID(0x041e, 0x3f02): /* E-Mu 0202 USB */
+ case USB_ID(0x041e, 0x3f04): /* E-Mu 0404 USB */
+ case USB_ID(0x041e, 0x3f0a): /* E-Mu Tracker Pre */
+ set_format_emu_quirk(subs, fmt);
+ break;
+ }
+
#if 0
printk(KERN_DEBUG
"setting done: format = %d, rate = %d..%d, channels = %d\n",