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authorAlexey Fisher <bug-track@fisher-privat.net>2009-07-22 08:57:54 -0400
committerTakashi Iwai <tiwai@suse.de>2009-07-22 09:52:15 -0400
commit2cf313ee75ddf6220b5d623b749b1bb79458307f (patch)
tree6002a61a2c5b3d4c331fc6df80f96a389df669c6 /sound
parent8886f33f25083a47d5fa24ad7b57bb708c5c5403 (diff)
ALSA: usb-audio - Volume control quirk for QuickCam E 3500
- E3500 report cval->max more than it actually can handel, so if you set 95% capture level it will be silently muted. - Betwen cval->min and cval-max(real) is 2940 control units, but real are only 7 with cval->res = 384. - Alsa can't handel less than 10 controls, so make it more and set cval->res = 192. Signed-off-by: Alexey Fisher <bug-track@fisher-privat.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/usb/usbmixer.c25
1 files changed, 20 insertions, 5 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 4bd3a7a0edc1..ec9cdf986928 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -990,20 +990,35 @@ static void build_feature_ctl(struct mixer_build *state, unsigned char *desc,
990 break; 990 break;
991 } 991 }
992 992
993 /* quirk for UDA1321/N101 */ 993 /* volume control quirks */
994 /* note that detection between firmware 2.1.1.7 (N101) and later 2.1.1.21 */
995 /* is not very clear from datasheets */
996 /* I hope that the min value is -15360 for newer firmware --jk */
997 switch (state->chip->usb_id) { 994 switch (state->chip->usb_id) {
998 case USB_ID(0x0471, 0x0101): 995 case USB_ID(0x0471, 0x0101):
999 case USB_ID(0x0471, 0x0104): 996 case USB_ID(0x0471, 0x0104):
1000 case USB_ID(0x0471, 0x0105): 997 case USB_ID(0x0471, 0x0105):
1001 case USB_ID(0x0672, 0x1041): 998 case USB_ID(0x0672, 0x1041):
999 /* quirk for UDA1321/N101.
1000 * note that detection between firmware 2.1.1.7 (N101)
1001 * and later 2.1.1.21 is not very clear from datasheets.
1002 * I hope that the min value is -15360 for newer firmware --jk
1003 */
1002 if (!strcmp(kctl->id.name, "PCM Playback Volume") && 1004 if (!strcmp(kctl->id.name, "PCM Playback Volume") &&
1003 cval->min == -15616) { 1005 cval->min == -15616) {
1004 snd_printk(KERN_INFO "using volume control quirk for the UDA1321/N101 chip\n"); 1006 snd_printk(KERN_INFO
1007 "set volume quirk for UDA1321/N101 chip\n");
1005 cval->max = -256; 1008 cval->max = -256;
1006 } 1009 }
1010 break;
1011
1012 case USB_ID(0x046d, 0x09a4):
1013 if (!strcmp(kctl->id.name, "Mic Capture Volume")) {
1014 snd_printk(KERN_INFO
1015 "set volume quirk for QuickCam E3500\n");
1016 cval->min = 6080;
1017 cval->max = 8768;
1018 cval->res = 192;
1019 }
1020 break;
1021
1007 } 1022 }
1008 1023
1009 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n", 1024 snd_printdd(KERN_INFO "[%d] FU [%s] ch = %d, val = %d/%d/%d\n",