diff options
author | Alexey Fisher <bug-track@fisher-privat.net> | 2009-07-22 08:57:54 -0400 |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2009-07-22 09:52:15 -0400 |
commit | 2cf313ee75ddf6220b5d623b749b1bb79458307f (patch) | |
tree | 6002a61a2c5b3d4c331fc6df80f96a389df669c6 /sound | |
parent | 8886f33f25083a47d5fa24ad7b57bb708c5c5403 (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.c | 25 |
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", |