1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * motu-proc.c - a part of driver for MOTU FireWire series
  4 *
  5 * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
  6 */
  7
  8#include "./motu.h"
  9
 10static const char *const clock_names[] = {
 11	[SND_MOTU_CLOCK_SOURCE_INTERNAL] = "Internal",
 12	[SND_MOTU_CLOCK_SOURCE_ADAT_ON_DSUB] = "ADAT on Dsub-9pin interface",
 13	[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT] = "ADAT on optical interface",
 14	[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_A] = "ADAT on optical interface A",
 15	[SND_MOTU_CLOCK_SOURCE_ADAT_ON_OPT_B] = "ADAT on optical interface B",
 16	[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT] = "S/PDIF on optical interface",
 17	[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_A] = "S/PDIF on optical interface A",
 18	[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_OPT_B] = "S/PDIF on optical interface B",
 19	[SND_MOTU_CLOCK_SOURCE_SPDIF_ON_COAX] = "S/PDIF on coaxial interface",
 20	[SND_MOTU_CLOCK_SOURCE_AESEBU_ON_XLR] = "AESEBU on XLR interface",
 21	[SND_MOTU_CLOCK_SOURCE_WORD_ON_BNC] = "Word clock on BNC interface",
 22	[SND_MOTU_CLOCK_SOURCE_SPH] = "Source packet header",
 23	[SND_MOTU_CLOCK_SOURCE_UNKNOWN] = "Unknown",
 24};
 25
 26static void proc_read_clock(struct snd_info_entry *entry,
 27			    struct snd_info_buffer *buffer)
 28{
 29
 30	struct snd_motu *motu = entry->private_data;
 31	unsigned int rate;
 32	enum snd_motu_clock_source source;
 33
 34	if (snd_motu_protocol_get_clock_rate(motu, &rate) < 0)
 35		return;
 36	if (snd_motu_protocol_get_clock_source(motu, &source) < 0)
 37		return;
 38
 39	snd_iprintf(buffer, "Rate:\t%d\n", rate);
 40	snd_iprintf(buffer, "Source:\t%s\n", clock_names[source]);
 41}
 42
 43static void proc_read_format(struct snd_info_entry *entry,
 44			     struct snd_info_buffer *buffer)
 45{
 46	struct snd_motu *motu = entry->private_data;
 47	unsigned int mode;
 48	struct snd_motu_packet_format *formats;
 49	int i;
 50
 51	if (snd_motu_protocol_cache_packet_formats(motu) < 0)
 52		return;
 53
 54	snd_iprintf(buffer, "tx:\tmsg\tfixed\ttotal\n");
 55	for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
 56		mode = i >> 1;
 57
 58		formats = &motu->tx_packet_formats;
 59		snd_iprintf(buffer,
 60			    "%u:\t%u\t%u\t%u\n",
 61			    snd_motu_clock_rates[i],
 62			    formats->msg_chunks,
 63			    motu->spec->tx_fixed_pcm_chunks[mode],
 64			    formats->pcm_chunks[mode]);
 65	}
 66
 67	snd_iprintf(buffer, "rx:\tmsg\tfixed\ttotal\n");
 68	for (i = 0; i < SND_MOTU_CLOCK_RATE_COUNT; ++i) {
 69		mode = i >> 1;
 70
 71		formats = &motu->rx_packet_formats;
 72		snd_iprintf(buffer,
 73			    "%u:\t%u\t%u\t%u\n",
 74			    snd_motu_clock_rates[i],
 75			    formats->msg_chunks,
 76			    motu->spec->rx_fixed_pcm_chunks[mode],
 77			    formats->pcm_chunks[mode]);
 78	}
 79}
 80
 81static void add_node(struct snd_motu *motu, struct snd_info_entry *root,
 82		     const char *name,
 83		     void (*op)(struct snd_info_entry *e,
 84				struct snd_info_buffer *b))
 85{
 86	struct snd_info_entry *entry;
 87
 88	entry = snd_info_create_card_entry(motu->card, name, root);
 89	if (entry)
 90		snd_info_set_text_ops(entry, motu, op);
 91}
 92
 93void snd_motu_proc_init(struct snd_motu *motu)
 94{
 95	struct snd_info_entry *root;
 96
 97	/*
 98	 * All nodes are automatically removed at snd_card_disconnect(),
 99	 * by following to link list.
100	 */
101	root = snd_info_create_card_entry(motu->card, "firewire",
102					  motu->card->proc_root);
103	if (root == NULL)
104		return;
105	root->mode = S_IFDIR | 0555;
106
107	add_node(motu, root, "clock", proc_read_clock);
108	add_node(motu, root, "format", proc_read_format);
109}