Commit 21493316 authored May 09, 2018 by Federico Cuello Committed by Takashi Iwai May 13, 2018

ALSA: usb: mixer: volume quirk for CM102-A+/102S+



Currently it's not possible to set volume lower than 26% (it just mutes).

Also fixes this warning:

  Warning! Unlikely big volume range (=9472), cval->res is probably wrong.
  [13] FU [PCM Playback Volume] ch = 2, val = -9473/-1/1

, and volume works fine for full range.

Signed-off-by: Federico Cuello <fedux@fedux.com.ar>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent c8beccc1

sound/usb/mixer.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -967,6 +967,14 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
		}
		break;

		case USB_ID(0x0d8c, 0x0103):
		if (!strcmp(kctl->id.name, "PCM Playback Volume")) {
		usb_audio_info(chip,
		"set volume quirk for CM102-A+/102S+\n");
		cval->min = -256;
		}
		break;

		case USB_ID(0x0471, 0x0101):
		case USB_ID(0x0471, 0x0104):
		case USB_ID(0x0471, 0x0105):

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