1/*
2 * digi00x-proc.c - a part of driver for Digidesign Digi 002/003 family
3 *
4 * Copyright (c) 2014-2015 Takashi Sakamoto
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8
9#include "digi00x.h"
10
11static int get_optical_iface_mode(struct snd_dg00x *dg00x,
12				  enum snd_dg00x_optical_mode *mode)
13{
14	__be32 data;
15	int err;
16
17	err = snd_fw_transaction(dg00x->unit, TCODE_READ_QUADLET_REQUEST,
18				 DG00X_ADDR_BASE + DG00X_OFFSET_OPT_IFACE_MODE,
19				 &data, sizeof(data), 0);
20	if (err >= 0)
21		*mode = be32_to_cpu(data) & 0x01;
22
23	return err;
24}
25
26static void proc_read_clock(struct snd_info_entry *entry,
27			    struct snd_info_buffer *buf)
28{
29	static const char *const source_name[] = {
30		[SND_DG00X_CLOCK_INTERNAL] = "internal",
31		[SND_DG00X_CLOCK_SPDIF] = "s/pdif",
32		[SND_DG00X_CLOCK_ADAT] = "adat",
33		[SND_DG00X_CLOCK_WORD] = "word clock",
34	};
35	static const char *const optical_name[] = {
36		[SND_DG00X_OPT_IFACE_MODE_ADAT] = "adat",
37		[SND_DG00X_OPT_IFACE_MODE_SPDIF] = "s/pdif",
38	};
39	struct snd_dg00x *dg00x = entry->private_data;
40	enum snd_dg00x_optical_mode mode;
41	unsigned int rate;
42	enum snd_dg00x_clock clock;
43	bool detect;
44
45	if (get_optical_iface_mode(dg00x, &mode) < 0)
46		return;
47	if (snd_dg00x_stream_get_local_rate(dg00x, &rate) < 0)
48		return;
49	if (snd_dg00x_stream_get_clock(dg00x, &clock) < 0)
50		return;
51
52	snd_iprintf(buf, "Optical mode: %s\n", optical_name[mode]);
53	snd_iprintf(buf, "Sampling Rate: %d\n", rate);
54	snd_iprintf(buf, "Clock Source: %s\n", source_name[clock]);
55
56	if (clock == SND_DG00X_CLOCK_INTERNAL)
57		return;
58
59	if (snd_dg00x_stream_check_external_clock(dg00x, &detect) < 0)
60		return;
61	snd_iprintf(buf, "External source: %s\n", detect ? "detected" : "not");
62	if (!detect)
63		return;
64
65	if (snd_dg00x_stream_get_external_rate(dg00x, &rate) >= 0)
66		snd_iprintf(buf, "External sampling rate: %d\n", rate);
67}
68
69void snd_dg00x_proc_init(struct snd_dg00x *dg00x)
70{
71	struct snd_info_entry *root, *entry;
72
73	/*
74	 * All nodes are automatically removed at snd_card_disconnect(),
75	 * by following to link list.
76	 */
77	root = snd_info_create_card_entry(dg00x->card, "firewire",
78					  dg00x->card->proc_root);
79	if (root == NULL)
80		return;
81
82	root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
83	if (snd_info_register(root) < 0) {
84		snd_info_free_entry(root);
85		return;
86	}
87
88	entry = snd_info_create_card_entry(dg00x->card, "clock", root);
89	if (entry == NULL) {
90		snd_info_free_entry(root);
91		return;
92	}
93
94	snd_info_set_text_ops(entry, dg00x, proc_read_clock);
95	if (snd_info_register(entry) < 0) {
96		snd_info_free_entry(entry);
97		snd_info_free_entry(root);
98	}
99}
100