ALSA: wss_lib: Fix resume on Yamaha OPL3-SAx

Yamaha OPL3-SAx chips don't resume properly when playback is running - garbage is played after resume. Restoring the CS4231_PLAYBK_FORMAT register last fixes the problem. Signed-off-by: Ondrej Zary <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
Baughn · Jul 16, 2012 · b4e2a16 · b4e2a16
1 parent ca3273f
commit b4e2a16
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/sound/isa/wss/wss_lib.c b/sound/isa/wss/wss_lib.c
@@ -1656,6 +1656,10 @@ static void snd_wss_resume(struct snd_wss *chip)
 			break;
 		}
 	}
+	/* Yamaha needs this to resume properly */
+	if (chip->hardware == WSS_HW_OPL3SA2)
+		snd_wss_out(chip, CS4231_PLAYBK_FORMAT,
+			    chip->image[CS4231_PLAYBK_FORMAT]);
 	spin_unlock_irqrestore(&chip->reg_lock, flags);
 #if 1
 	snd_wss_mce_down(chip);