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
10static 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
25static 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
68void 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