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
10 static 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
26 static 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
43 static 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
81 static 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
93 void 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
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