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}
110