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authorYao-Wen Mao <yaowen@google.com>2015-07-29 15:13:54 +0800
committerBen Hutchings <ben@decadent.org.uk>2015-08-12 16:33:24 +0200
commit2df4c8a9db171a0676aae3d6f3c965f74ca37255 (patch)
tree58bec06af2041681f8f3052c5dc1d643cdc1a4b2 /sound
parent403652a78799f25e3c0d07326805cc1ffcce0f87 (diff)
ALSA: usb-audio: add dB range mapping for some devices
commit 2d1cb7f658fb9c3ba8f9dab8aca297d4dfdec835 upstream. Add the correct dB ranges of Bose Companion 5 and Drangonfly DAC 1.2. Signed-off-by: Yao-Wen Mao <yaowen@google.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'sound')
-rw-r--r--sound/usb/mixer_maps.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index 851786ffa639..893b750b2d18 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -312,6 +312,20 @@ static const struct usbmix_name_map scms_usb3318_map[] = {
{ 0 }
};
+/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
+static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
+static struct usbmix_name_map bose_companion5_map[] = {
+ { 3, NULL, .dB = &bose_companion5_dB },
+ { 0 } /* terminator */
+};
+
+/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
+static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
+static struct usbmix_name_map dragonfly_1_2_map[] = {
+ { 7, NULL, .dB = &dragonfly_1_2_dB },
+ { 0 } /* terminator */
+};
+
/*
* Control map entries
*/
@@ -394,6 +408,16 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
.id = USB_ID(0x25c4, 0x0003),
.map = scms_usb3318_map,
},
+ {
+ /* Bose Companion 5 */
+ .id = USB_ID(0x05a7, 0x1020),
+ .map = bose_companion5_map,
+ },
+ {
+ /* Dragonfly DAC 1.2 */
+ .id = USB_ID(0x21b4, 0x0081),
+ .map = dragonfly_1_2_map,
+ },
{ 0 } /* terminator */
};