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ALSA: firewire-motu: fix register handling for 828 

After further investigation, I find out some mistakes for 828 about its
register. This commit fixes it.

Fixes: d13d6b284d ("ALSA: firewire-motu: add support for MOTU 828")
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210623075941.72562-9-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2021-06-23 16:59:40 +09:00 committed by Takashi Iwai
parent 7203233ea7
commit e949e338d7
1 changed files with 35 additions and 18 deletions
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53
sound/firewire/motu/motu-protocol-v1.c
View File

@ -19,7 +19,7 @@
// 0x00004000: mode of optical output interface.
// 0x00004000: for S/PDIF signal.
// 0x00000000: disabled or for ADAT signal.
// 0x00003f40: monitor input mode.
// 0x00003f00: monitor input mode.
// 0x00000800: analog-1/2
// 0x00001a00: analog-3/4
// 0x00002c00: analog-5/6
@ -32,26 +32,32 @@
// 0x00002d00: analog-6
// 0x00003600: analog-7
// 0x00003f00: analog-8
// 0x00000040: disabled
// 0x00000080: enable stream input.
// 0x00000040: disable monitor input.
// 0x00000008: enable main out.
// 0x00000004: rate of sampling clock.
// 0x00000004: 48.0 kHz
// 0x00000000: 44.1 kHz
// 0x00000023: source of sampling clock.
// 0x00000003: source packet header (SPH)
// 0x00000002: S/PDIF on optical/coaxial interface.
// 0x00000021: ADAT on optical interface
// 0x00000001: ADAT on Dsub 9pin
// 0x00000000: internal or SMPTE
// 0x00000000: internal
#define CLK_828_STATUS_OFFSET 0x0b00
#define CLK_828_STATUS_MASK 0x0000ffff
#define CLK_828_STATUS_FLAG_OPT_IN_IFACE_IS_SPDIF 0x00008000
#define CLK_828_STATUS_FLAG_OPT_OUT_IFACE_IS_SPDIF 0x00004000
#define CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES 0x00000080
#define CLK_828_STATUS_FLAG_SRC_IS_NOT_FROM_ADAT_DSUB 0x00000020
#define CLK_828_STATUS_FLAG_OUTPUT_MUTE 0x00000008
#define CLK_828_STATUS_FLAG_ENABLE_OUTPUT 0x00000008
#define CLK_828_STATUS_FLAG_RATE_48000 0x00000004
#define CLK_828_STATUS_FLAG_SRC_SPDIF_ON_OPT_OR_COAX 0x00000002
#define CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT_OR_DSUB 0x00000001
#define CLK_828_STATUS_MASK_SRC 0x00000023
#define CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT 0x00000021
#define CLK_828_STATUS_FLAG_SRC_SPH 0x00000003
#define CLK_828_STATUS_FLAG_SRC_SPDIF 0x00000002
#define CLK_828_STATUS_FLAG_SRC_ADAT_ON_DSUB 0x00000001
#define CLK_828_STATUS_FLAG_SRC_INTERNAL 0x00000000
// Status register for MOTU 896 (0x'ffff'f000'0b14).
//
@ -249,18 +255,29 @@ static int get_clock_source_828(struct snd_motu *motu, enum snd_motu_clock_sourc
return err;
data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
if (data & CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT_OR_DSUB) {
if (data & CLK_828_STATUS_FLAG_SRC_IS_NOT_FROM_ADAT_DSUB)
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
else
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
} else if (data & CLK_828_STATUS_FLAG_SRC_SPDIF_ON_OPT_OR_COAX) {
switch (data & CLK_828_STATUS_MASK_SRC) {
case CLK_828_STATUS_FLAG_SRC_ADAT_ON_OPT:
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT;
break;
case CLK_828_STATUS_FLAG_SRC_SPH:
*src = SND_MOTU_CLOCK_SOURCE_SPH;
break;
case CLK_828_STATUS_FLAG_SRC_SPDIF:
{
if (data & CLK_828_STATUS_FLAG_OPT_IN_IFACE_IS_SPDIF)
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
else
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX;
} else {
else
*src = SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT;
break;
}
case CLK_828_STATUS_FLAG_SRC_ADAT_ON_DSUB:
*src = SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB;
break;
case CLK_828_STATUS_FLAG_SRC_INTERNAL:
*src = SND_MOTU_CLOCK_SOURCE_INTERNAL;
break;
default:
return -ENXIO;
}
return 0;
@ -321,13 +338,13 @@ static int switch_fetching_mode_828(struct snd_motu *motu, bool enable)
return err;
data = be32_to_cpu(reg) & CLK_828_STATUS_MASK;
data &= ~(CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_OUTPUT_MUTE);
data &= ~(CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_ENABLE_OUTPUT);
if (enable) {
// This transaction should be initiated after the device receives batch of packets
// since the device voluntarily mutes outputs. As a workaround, yield processor over
// 100 msec.
msleep(100);
data |= CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_OUTPUT_MUTE;
data |= CLK_828_STATUS_FLAG_FETCH_PCM_FRAMES | CLK_828_STATUS_FLAG_ENABLE_OUTPUT;
}
reg = cpu_to_be32(data);