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Message-ID: <lsq.1439201551.707197962@decadent.org.uk>
Date: Mon, 10 Aug 2015 12:12:31 +0200
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org, "Yao-Wen Mao" <yaowen@...gle.com>,
"Takashi Iwai" <tiwai@...e.de>
Subject: [PATCH 3.2 107/110] ALSA: usb-audio: add dB range mapping for
some devices
3.2.71-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Yao-Wen Mao <yaowen@...gle.com>
commit 2d1cb7f658fb9c3ba8f9dab8aca297d4dfdec835 upstream.
Add the correct dB ranges of Bose Companion 5 and Drangonfly DAC 1.2.
Signed-off-by: Yao-Wen Mao <yaowen@...gle.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
sound/usb/mixer_maps.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -312,6 +312,20 @@ static const struct usbmix_name_map scms
{ 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_
.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 */
};
--
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