1/*
2 * oxfw_proc.c - a part of driver for OXFW970/971 based devices
3 *
4 * Copyright (c) 2014 Takashi Sakamoto
5 *
6 * Licensed under the terms of the GNU General Public License, version 2.
7 */
8
9#include "./oxfw.h"
10
11static void proc_read_formation(struct snd_info_entry *entry,
12				struct snd_info_buffer *buffer)
13{
14	struct snd_oxfw *oxfw = entry->private_data;
15	struct snd_oxfw_stream_formation formation, curr;
16	u8 *format;
17	char flag;
18	int i, err;
19
20	/* Show input. */
21	err = snd_oxfw_stream_get_current_formation(oxfw,
22						    AVC_GENERAL_PLUG_DIR_IN,
23						    &curr);
24	if (err < 0)
25		return;
26
27	snd_iprintf(buffer, "Input Stream to device:\n");
28	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
29	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
30		format = oxfw->rx_stream_formats[i];
31		if (format == NULL)
32			continue;
33
34		err = snd_oxfw_stream_parse_format(format, &formation);
35		if (err < 0)
36			continue;
37
38		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
39			flag = '*';
40		else
41			flag = ' ';
42
43		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
44			    formation.rate, formation.pcm, formation.midi);
45	}
46
47	if (!oxfw->has_output)
48		return;
49
50	/* Show output. */
51	err = snd_oxfw_stream_get_current_formation(oxfw,
52						    AVC_GENERAL_PLUG_DIR_OUT,
53						    &curr);
54	if (err < 0)
55		return;
56
57	snd_iprintf(buffer, "Output Stream from device:\n");
58	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
59	for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) {
60		format = oxfw->tx_stream_formats[i];
61		if (format == NULL)
62			continue;
63
64		err = snd_oxfw_stream_parse_format(format, &formation);
65		if (err < 0)
66			continue;
67
68		if (memcmp(&formation, &curr, sizeof(curr)) == 0)
69			flag = '*';
70		else
71			flag = ' ';
72
73		snd_iprintf(buffer, "%c\t%d\t%d\t%d\n", flag,
74			    formation.rate, formation.pcm, formation.midi);
75	}
76}
77
78static void add_node(struct snd_oxfw *oxfw, struct snd_info_entry *root,
79		     const char *name,
80		     void (*op)(struct snd_info_entry *e,
81				struct snd_info_buffer *b))
82{
83	struct snd_info_entry *entry;
84
85	entry = snd_info_create_card_entry(oxfw->card, name, root);
86	if (entry == NULL)
87		return;
88
89	snd_info_set_text_ops(entry, oxfw, op);
90	if (snd_info_register(entry) < 0)
91		snd_info_free_entry(entry);
92}
93
94void snd_oxfw_proc_init(struct snd_oxfw *oxfw)
95{
96	struct snd_info_entry *root;
97
98	/*
99	 * All nodes are automatically removed at snd_card_disconnect(),
100	 * by following to link list.
101	 */
102	root = snd_info_create_card_entry(oxfw->card, "firewire",
103					  oxfw->card->proc_root);
104	if (root == NULL)
105		return;
106	root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
107	if (snd_info_register(root) < 0) {
108		snd_info_free_entry(root);
109		return;
110	}
111
112	add_node(oxfw, root, "formation", proc_read_formation);
113}
114