1 files changed, 16 insertions, 0 deletions
diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index d21964994168..88ae27431cb2 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -1217,6 +1217,22 @@ static int hdspm_external_sample_rate(struct hdspm *hdspm)
 				rate = 0;
 				break;
 			}
+
+			/* QS and DS rates normally can not be detected
+			 * automatically by the card. Only exception is MADI
+			 * in 96k frame mode.
+			 *
+			 * So if we read SS values (32 .. 48k), check for
+			 * user-provided DS/QS bits in the control register
+			 * and multiply the base frequency accordingly.
+			 */
+			if (rate <= 48000) {
+				if (hdspm->control_register & HDSPM_QuadSpeed)
+					rate *= 4;
+				else if (hdspm->control_register &
+						HDSPM_DoubleSpeed)
+					rate *= 2;
+			}
 		}
 		break;
 	}