ALSA: usb-audio: add dB range mapping for some devices
Add the correct dB ranges of Bose Companion 5 and Drangonfly DAC 1.2. Signed-off-by: Yao-Wen Mao <yaowen@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -341,6 +341,20 @@ static const struct usbmix_name_map scms_usb3318_map[] = {
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{ 0 }
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};
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/* Bose companion 5, the dB conversion factor is 16 instead of 256 */
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static struct usbmix_dB_map bose_companion5_dB = {-5006, -6};
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static struct usbmix_name_map bose_companion5_map[] = {
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{ 3, NULL, .dB = &bose_companion5_dB },
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{ 0 } /* terminator */
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};
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/* Dragonfly DAC 1.2, the dB conversion factor is 1 instead of 256 */
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static struct usbmix_dB_map dragonfly_1_2_dB = {0, 5000};
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static struct usbmix_name_map dragonfly_1_2_map[] = {
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{ 7, NULL, .dB = &dragonfly_1_2_dB },
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{ 0 } /* terminator */
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};
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/*
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* Control map entries
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*/
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@ -451,6 +465,16 @@ static struct usbmix_ctl_map usbmix_ctl_maps[] = {
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.id = USB_ID(0x25c4, 0x0003),
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.map = scms_usb3318_map,
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},
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{
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/* Bose Companion 5 */
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.id = USB_ID(0x05a7, 0x1020),
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.map = bose_companion5_map,
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},
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{
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/* Dragonfly DAC 1.2 */
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.id = USB_ID(0x21b4, 0x0081),
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.map = dragonfly_1_2_map,
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},
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{ 0 } /* terminator */
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};
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