1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * digi00x-proc.c - a part of driver for Digidesign Digi 002/003 family
4 *
5 * Copyright (c) 2014-2015 Takashi Sakamoto
6 */
7
8 #include "digi00x.h"
9
10 static int get_optical_iface_mode(struct snd_dg00x *dg00x,
11 enum snd_dg00x_optical_mode *mode)
12 {
13 __be32 data;
14 int err;
15
16 err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,
17 DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE,
18 &data, sizeof(data), 0);
19 if (err >= 0)
20 *mode = be32_to_cpu(data) & 0x01;
21
22 return err;
23 }
24
25 static void proc_read_clock(struct snd_info_entry *entry,
26 struct snd_info_buffer *buf)
27 {
28 static const char *const source_name[] = {
29 [SND_DG00X_CLOCK_INTERNAL] = "internal",
30 [SND_DG00X_CLOCK_SPDIF] = "s/pdif",
31 [SND_DG00X_CLOCK_ADAT] = "adat",
32 [SND_DG00X_CLOCK_WORD] = "word clock",
33 };
34 static const char *const optical_name[] = {
35 [SND_DG00X_OPT_IFACE_MODE_ADAT] = "adat",
36 [SND_DG00X_OPT_IFACE_MODE_SPDIF] = "s/pdif",
37 };
38 struct snd_dg00x *dg00x = entry->private_data;
39 enum snd_dg00x_optical_mode mode;
40 unsigned int rate;
41 enum snd_dg00x_clock clock;
42 bool detect;
43
44 if (get_optical_iface_mode(dg00x, &mode) < 0)
45 return;
46 if (snd_dg00x_stream_get_local_rate(dg00x, &rate) < 0)
47 return;
48 if (snd_dg00x_stream_get_clock(dg00x, &clock) < 0)
49 return;
50
51 snd_iprintf(buf, "Optical mode: %s\n", optical_name[mode]);
52 snd_iprintf(buf, "Sampling Rate: %d\n", rate);
53 snd_iprintf(buf, "Clock Source: %s\n", source_name[clock]);
54
55 if (clock == SND_DG00X_CLOCK_INTERNAL)
56 return;
57
58 if (snd_dg00x_stream_check_external_clock(dg00x, &detect) < 0)
59 return;
60 snd_iprintf(buf, "External source: %s\n", detect ? "detected" : "not");
61 if (!detect)
62 return;
63
64 if (snd_dg00x_stream_get_external_rate(dg00x, &rate) >= 0)
65 snd_iprintf(buf, "External sampling rate: %d\n", rate);
66 }
67
68 void snd_dg00x_proc_init(struct snd_dg00x *dg00x)
69 {
70 struct snd_info_entry *root, *entry;
71
72 /*
73 * All nodes are automatically removed at snd_card_disconnect(),
74 * by following to link list.
75 */
76 root = snd_info_create_card_entry(dg00x->card, "firewire",
77 dg00x->card->proc_root);
78 if (root == NULL)
79 return;
80
81 root->mode = S_IFDIR | 0555;
82
83 entry = snd_info_create_card_entry(dg00x->card, "clock", root);
84 if (entry)
85 snd_info_set_text_ops(entry, dg00x, proc_read_clock);
86 }
87
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