At Wed, 17 Feb 2010 12:26:15 -0600, Chris J Arges wrote:
This minimal patch has been tested on my laptop and currently output only works. This patch is based off of code that Clemens Ladisch posted on the alsa-devel mailing list way back in 2004.
Applied now. Thanks.
Takashi
--chris j arges [2 0001-ALSA-usbaudio-Mbox-support-output-only.patch <text/x-patch; UTF-8 (7bit)>]
From d079f1d7298d06597fa7d4c3c4aa8979864342ac Mon Sep 17 00:00:00 2001
From: Chris J Arges christopherarges@gmail.com Date: Wed, 17 Feb 2010 12:12:52 -0600 Subject: [PATCH] ALSA: usbaudio Mbox support, output only
Signed-off-by: Chris J Arges christopherarges@gmail.com
sound/usb/usbquirks.h | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 45 insertions(+), 0 deletions(-)
diff --git a/sound/usb/usbquirks.h b/sound/usb/usbquirks.h index e691eba..14552d2 100644 --- a/sound/usb/usbquirks.h +++ b/sound/usb/usbquirks.h @@ -2215,6 +2215,51 @@ YAMAHA_DEVICE(0x7010, "UB99"), } },
+/* Digidesign Mbox */ +{
- /* Thanks to Clemens Ladisch clemens@ladisch.de */
- USB_DEVICE(0x0dba, 0x1000),
- .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) {
.vendor_name = "Digidesign",.product_name = "MBox",.ifnum = QUIRK_ANY_INTERFACE,.type = QUIRK_COMPOSITE,.data = (const struct snd_usb_audio_quirk[]){{.ifnum = 0,.type = QUIRK_IGNORE_INTERFACE,},{.ifnum = 1,.type = QUIRK_AUDIO_FIXED_ENDPOINT,.data = &(const struct audioformat) {.format = SNDRV_PCM_FORMAT_S24_3BE,.channels = 2,.iface = 1,.altsetting = 1,.altset_idx = 1,.attributes = EP_CS_ATTR_SAMPLE_RATE,.endpoint = 0x02,.ep_attr = 0x01,.maxpacksize = 0x130,.rates = SNDRV_PCM_RATE_44100 |SNDRV_PCM_RATE_48000,.rate_min = 44100,.rate_max = 48000,.nr_rates = 2,.rate_table = (unsigned int[]) {44100, 48000}}},{.ifnum = -1}}- }
+},
{ /* * Some USB MIDI devices don't have an audio control interface, -- 1.6.3.3