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ALSA: firewire-motu: add alternative functions to detect packet format for protocol v2 

This commit adds alternative functions to detect packet format so that
each function corresponds to each model.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20200519111641.123211-8-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2020-05-19 20:16:34 +09:00 committed by Takashi Iwai
parent dfbaa4dc11
commit 28c8d3c91a
2 changed files with 67 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

72
sound/firewire/motu/motu-protocol-v2.c
View File

@ -164,7 +164,7 @@ int snd_motu_protocol_v2_switch_fetching_mode(struct snd_motu *motu,
if (enable)
data |= V2_CLOCK_FETCH_ENABLE;
if (motu->spec->flags & SND_MOTU_SPEC_SUPPORT_CLOCK_X4) {
if (motu->spec == &snd_motu_spec_traveler) {
// Expected for Traveler and 896HD, which implements Altera
// Cyclone EP1C3.
data |= V2_CLOCK_MODEL_SPECIFIC;
@ -193,8 +193,6 @@ static void calculate_fixed_part(struct snd_motu_packet_format *formats,
{
unsigned char pcm_chunks[3] = {0, 0, 0};
formats->msg_chunks = 2;
pcm_chunks[0] = analog_ports;
pcm_chunks[1] = analog_ports;
if (flags & SND_MOTU_SPEC_SUPPORT_CLOCK_X4)
@ -268,12 +266,69 @@ static void calculate_differed_part(struct snd_motu_packet_format *formats,
formats->differed_part_pcm_chunks[1] = pcm_chunks[1];
}
static int detect_packet_formats_828mk2(struct snd_motu *motu, u32 data)
{
if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->tx_packet_formats.pcm_chunks[0] += 8;
motu->tx_packet_formats.pcm_chunks[1] += 4;
}
if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->rx_packet_formats.pcm_chunks[0] += 8;
motu->rx_packet_formats.pcm_chunks[1] += 4;
}
return 0;
}
static int detect_packet_formats_traveler(struct snd_motu *motu, u32 data)
{
if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->tx_packet_formats.pcm_chunks[0] += 8;
motu->tx_packet_formats.pcm_chunks[1] += 4;
}
if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->rx_packet_formats.pcm_chunks[0] += 8;
motu->rx_packet_formats.pcm_chunks[1] += 4;
}
return 0;
}
static int detect_packet_formats_8pre(struct snd_motu *motu, u32 data)
{
if (((data & V2_OPT_IN_IFACE_MASK) >> V2_OPT_IN_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->tx_packet_formats.pcm_chunks[0] += 8;
motu->tx_packet_formats.pcm_chunks[1] += 8;
}
if (((data & V2_OPT_OUT_IFACE_MASK) >> V2_OPT_OUT_IFACE_SHIFT) ==
V2_OPT_IFACE_MODE_ADAT) {
motu->rx_packet_formats.pcm_chunks[0] += 8;
motu->rx_packet_formats.pcm_chunks[1] += 8;
}
return 0;
}
int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu)
{
__be32 reg;
u32 data;
int err;
motu->tx_packet_formats.pcm_byte_offset = 10;
motu->rx_packet_formats.pcm_byte_offset = 10;
motu->tx_packet_formats.msg_chunks = 2;
motu->rx_packet_formats.msg_chunks = 2;
err = snd_motu_transaction_read(motu, V2_IN_OUT_CONF_OFFSET, &reg,
sizeof(reg));
if (err < 0)
@ -290,10 +345,15 @@ int snd_motu_protocol_v2_cache_packet_formats(struct snd_motu *motu)
calculate_differed_part(&motu->rx_packet_formats, motu->spec->flags,
data, V2_OPT_OUT_IFACE_MASK, V2_OPT_OUT_IFACE_SHIFT);
motu->tx_packet_formats.pcm_byte_offset = 10;
motu->rx_packet_formats.pcm_byte_offset = 10;
return 0;
if (motu->spec == &snd_motu_spec_828mk2)
return detect_packet_formats_828mk2(motu, data);
else if (motu->spec == &snd_motu_spec_traveler)
return detect_packet_formats_traveler(motu, data);
else if (motu->spec == &snd_motu_spec_8pre)
return detect_packet_formats_8pre(motu, data);
else
return 0;
}
const struct snd_motu_spec snd_motu_spec_828mk2 = {

1
sound/firewire/motu/motu.h
View File

@ -36,6 +36,7 @@ struct snd_motu_packet_format {
unsigned char pcm_byte_offset;
unsigned char msg_chunks;
unsigned char pcm_chunks[3];
unsigned char fixed_part_pcm_chunks[3];
unsigned char differed_part_pcm_chunks[3];
};