[ALSA] Fixes audiophile usb analog capture with the new device_setup parameter
Modules: Documentation,USB generic driver
The patch adds the 'device_setup' module parameter and a specific
quirk to correctly initialize the audiophile usb device: this fixes
the distorted sound bug on the Analog capture port. Backward
compatibility is achieved by simply omitting the new parameter.
Signed-off-by: Thibault LE MEUR <Thibault.LeMeur@supelec.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt
index 1065bee..f947c4b 100644
--- a/Documentation/sound/alsa/ALSA-Configuration.txt
+++ b/Documentation/sound/alsa/ALSA-Configuration.txt
@@ -1411,6 +1411,9 @@
vid - Vendor ID for the device (optional)
pid - Product ID for the device (optional)
+ device_setup - Device specific magic number (optional)
+ - Influence depends on the device
+ - Default: 0x0000
This module supports multiple devices, autoprobe and hotplugging.