@@ -61,13 +61,21 @@
// Status register for MOTU 896 (0x'ffff'f000'0b14).
//
-// 0x20000000: fetch PCM frames from communication IC to DAC.
+// 0xf0000000: enable physical and stream input to DAC.
+// 0x80000000: disable
+// 0x40000000: disable
+// 0x20000000: enable (prior to the other bits)
+// 0x10000000: disable
+// 0x00000000: disable
// 0x08000000: speed of word clock signal output on BNC interface.
-// 0x00000000: follow to system clock.
-// 0x08000000: half of system clock.
-// 0x01000000: Route main output to headphone output.
-// 0x00ffff00: input to monitor.
-// 0x00000000: none
+// 0x00000000: force to low rate (44.1/48.0 kHz).
+// 0x08000000: follow to system clock.
+// 0x04000000: something relevant to clock.
+// 0x03000000: enable output.
+// 0x02000000: enabled irreversibly once standing unless the device voluntarily disables it.
+// 0x01000000: enabled irreversibly once standing unless the device voluntarily disables it.
+// 0x00ffff00: monitor input mode.
+// 0x00000000: disabled
// 0x00004800: analog-1/2
// 0x00005a00: analog-3/4
// 0x00006c00: analog-5/6
@@ -83,7 +91,7 @@
// 0x00007f00: analog-8
// 0x00104000: AES/EBU-1
// 0x00104900: AES/EBU-2
-// 0x00000060: sample rate conversin for AES/EBU input/output.
+// 0x00000060: sample rate conversion for AES/EBU input/output.
// 0x00000000: None
// 0x00000020: input signal is converted to system rate
// 0x00000040: output is slave to input, ignoring system rate
@@ -97,16 +105,18 @@
// 0x00000000: internal
// 0x00000001: ADAT on optical interface
// 0x00000002: AES/EBU on XLR
+// 0x00000003: source packet header (SPH)
// 0x00000004: word clock on BNC
// 0x00000005: ADAT on Dsub 9pin
#define CLK_896_STATUS_OFFSET 0x0b14
#define CLK_896_STATUS_FLAG_FETCH_ENABLE 0x20000000
-#define CLK_896_STATUS_FLAG_MAIN_TO_HP 0x01000000
+#define CLK_896_STATUS_FLAG_OUTPUT_ON 0x03000000
#define CLK_896_STATUS_MASK_SRC 0x00000007
#define CLK_896_STATUS_FLAG_SRC_INTERNAL 0x00000000
#define CLK_896_STATUS_FLAG_SRC_ADAT_ON_OPT 0x00000001
#define CLK_896_STATUS_FLAG_SRC_AESEBU 0x00000002
+#define CLK_896_STATUS_FLAG_SRC_SPH 0x00000003
#define CLK_896_STATUS_FLAG_SRC_WORD 0x00000004
#define CLK_896_STATUS_FLAG_SRC_ADAT_ON_DSUB 0x00000005
#define CLK_896_STATUS_MASK_RATE 0x00000018
@@ -304,6 +314,9 @@ static int get_clock_source_896(struct snd_motu *motu, enum snd_motu_clock_sourc
case CLK_896_STATUS_FLAG_SRC_AESEBU:
*src = SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR;
break;
+ case CLK_896_STATUS_FLAG_SRC_SPH:
+ *src = SND_MOTU_CLOCK_SOURCE_SPH;
+ break;
case CLK_896_STATUS_FLAG_SRC_WORD:
*src = SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC;
break;
@@ -362,9 +375,9 @@ static int switch_fetching_mode_896(struct snd_motu *motu, bool enable)
return err;
data = be32_to_cpu(reg);
- data &= ~(CLK_896_STATUS_FLAG_FETCH_ENABLE | CLK_896_STATUS_FLAG_MAIN_TO_HP);
+ data &= ~CLK_896_STATUS_FLAG_FETCH_ENABLE;
if (enable)
- data |= (CLK_896_STATUS_FLAG_FETCH_ENABLE | CLK_896_STATUS_FLAG_MAIN_TO_HP);
+ data |= CLK_896_STATUS_FLAG_FETCH_ENABLE | CLK_896_STATUS_FLAG_OUTPUT_ON;
reg = cpu_to_be32(data);
return snd_motu_transaction_write(motu, CLK_896_STATUS_OFFSET, ®, sizeof(reg));
After further investigation, I find out some mistakes for 896 about its register. This commit fixes it. Fixes: b431f16f1685 ("ALSA: firewire-motu: add support for MOTU 896") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> --- sound/firewire/motu/motu-protocol-v1.c | 33 ++++++++++++++++++-------- 1 file changed, 23 insertions(+), 10 deletions(-)