mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
3f58f004bf
In MOTU FireWire series, devices have a mode to generate sampling clock from a sequence of source packet header (SPH) included in each data block of received packet. This mode is used for several purposes such as mode for SMPTE time code, sync to the other sound cards and so on. This commit adds support for the SPH mode. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20191030080644.1704-4-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* motu-proc.c - a part of driver for MOTU FireWire series
|
|
*
|
|
* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
|
|
*/
|
|
|
|
#include "./motu.h"
|
|
|
|
static const char *const clock_names[] = {
|
|
[SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
|
|
[SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
|
|
[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
|
|
[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
|
|
[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
|
|
[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
|
|
[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
|
|
[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
|
|
[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PCIF on coaxial interface",
|
|
[SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
|
|
[SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
|
|
[SND_MOTU_CLOCK_SOURCE_SPH] = "Source packet header",
|
|
[SND_MOTU_CLOCK_SOURCE_UNKNOWN] = "Unknown",
|
|
};
|
|
|
|
static void proc_read_clock(struct snd_info_entry *entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
|
|
struct snd_motu *motu = entry->private_data;
|
|
const struct snd_motu_protocol *const protocol = motu->spec->protocol;
|
|
unsigned int rate;
|
|
enum snd_motu_clock_source source;
|
|
|
|
if (protocol->get_clock_rate(motu, &rate) < 0)
|
|
return;
|
|
if (protocol->get_clock_source(motu, &source) < 0)
|
|
return;
|
|
|
|
snd_iprintf(buffer, "Rate:\t%d\n", rate);
|
|
snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
|
|
}
|
|
|
|
static void proc_read_format(struct snd_info_entry *entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
struct snd_motu *motu = entry->private_data;
|
|
const struct snd_motu_protocol *const protocol = motu->spec->protocol;
|
|
unsigned int mode;
|
|
struct snd_motu_packet_format *formats;
|
|
int i;
|
|
|
|
if (protocol->cache_packet_formats(motu) < 0)
|
|
return;
|
|
|
|
snd_iprintf(buffer, "tx:\tmsg\tfixed\tdiffered\n");
|
|
for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
|
|
mode = i >> 1;
|
|
|
|
formats = &motu->tx_packet_formats;
|
|
snd_iprintf(buffer,
|
|
"%u:\t%u\t%u\t%u\n",
|
|
snd_motu_clock_rates[i],
|
|
formats->msg_chunks,
|
|
formats->fixed_part_pcm_chunks[mode],
|
|
formats->differed_part_pcm_chunks[mode]);
|
|
}
|
|
|
|
snd_iprintf(buffer, "rx:\tmsg\tfixed\tdiffered\n");
|
|
for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
|
|
mode = i >> 1;
|
|
|
|
formats = &motu->rx_packet_formats;
|
|
snd_iprintf(buffer,
|
|
"%u:\t%u\t%u\t%u\n",
|
|
snd_motu_clock_rates[i],
|
|
formats->msg_chunks,
|
|
formats->fixed_part_pcm_chunks[mode],
|
|
formats->differed_part_pcm_chunks[mode]);
|
|
}
|
|
}
|
|
|
|
static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
|
|
const char *name,
|
|
void (*op)(struct snd_info_entry *e,
|
|
struct snd_info_buffer *b))
|
|
{
|
|
struct snd_info_entry *entry;
|
|
|
|
entry = snd_info_create_card_entry(motu->card, name, root);
|
|
if (entry)
|
|
snd_info_set_text_ops(entry, motu, op);
|
|
}
|
|
|
|
void snd_motu_proc_init(struct snd_motu *motu)
|
|
{
|
|
struct snd_info_entry *root;
|
|
|
|
/*
|
|
* All nodes are automatically removed at snd_card_disconnect(),
|
|
* by following to link list.
|
|
*/
|
|
root = snd_info_create_card_entry(motu->card, "firewire",
|
|
motu->card->proc_root);
|
|
if (root == NULL)
|
|
return;
|
|
root->mode = S_IFDIR | 0555;
|
|
|
|
add_node(motu, root, "clock", proc_read_clock);
|
|
add_node(motu, root, "format", proc_read_format);
|
|
}
|