Commit 153abaa4 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
Browse files

[ALSA] ymfpci: fix swapped channels in SPDIF output 



Modules: YMFPCI driver

The routing of the effect 2/3 channels to the digital output is the
opposite of the rear analog output (left/right swapped).

We make the order correct for the digital output (which will make the
analog rear have the channels swapped) to make AC3 output work.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
parent 27346166

sound/pci/ymfpci/ymfpci_main.c

+8 −4
Original line number Diff line number Diff line
@@ -536,13 +536,17 @@ static void snd_ymfpci_pcm_init_voice(struct snd_ymfpci_pcm *ypcm, unsigned int 
			}

		}

		if (ypcm->output_rear) {

			/* The SPDIF out channels seem to be swapped, so we have

			 * to swap them here, too.  The rear analog out channels

			 * will be wrong, but otherwise AC3 would not work.

			 */

			if (use_left) {

				bank->eff2_gain =

				bank->eff2_gain_end = vol_left;

				bank->eff3_gain =

				bank->eff3_gain_end = vol_left;

			}

			if (use_right) {

				bank->eff3_gain =

				bank->eff3_gain_end = vol_right;

				bank->eff2_gain =

				bank->eff2_gain_end = vol_right;

			}

		}

	}