1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * bebob_proc.c - a part of driver for BeBoB based devices
4  *
5  * Copyright (c) 2013-2014 Takashi Sakamoto
6  */
7 
8 #include "./bebob.h"
9 
10 /* contents of information register */
11 struct hw_info {
12 	u64 manufacturer;
13 	u32 protocol_ver;
14 	u32 bld_ver;
15 	u32 guid[2];
16 	u32 model_id;
17 	u32 model_rev;
18 	u64 fw_date;
19 	u64 fw_time;
20 	u32 fw_id;
21 	u32 fw_ver;
22 	u32 base_addr;
23 	u32 max_size;
24 	u64 bld_date;
25 	u64 bld_time;
26 /* may not used in product
27 	u64 dbg_date;
28 	u64 dbg_time;
29 	u32 dbg_id;
30 	u32 dbg_version;
31 */
32 } __packed;
33 
34 static void
35 proc_read_hw_info(struct snd_info_entry *entry,
36 		  struct snd_info_buffer *buffer)
37 {
38 	struct snd_bebob *bebob = entry->private_data;
39 	struct hw_info *info;
40 
41 	info = kzalloc(sizeof(struct hw_info), GFP_KERNEL);
42 	if (info == NULL)
43 		return;
44 
45 	if (snd_bebob_read_block(bebob->unit, 0,
46 				   info, sizeof(struct hw_info)) < 0)
47 		goto end;
48 
49 	snd_iprintf(buffer, "Manufacturer:\t%.8s\n",
50 		    (char *)&info->manufacturer);
51 	snd_iprintf(buffer, "Protocol Ver:\t%d\n", info->protocol_ver);
52 	snd_iprintf(buffer, "Build Ver:\t%d\n", info->bld_ver);
53 	snd_iprintf(buffer, "GUID:\t\t0x%.8X%.8X\n",
54 		    info->guid[0], info->guid[1]);
55 	snd_iprintf(buffer, "Model ID:\t0x%02X\n", info->model_id);
56 	snd_iprintf(buffer, "Model Rev:\t%d\n", info->model_rev);
57 	snd_iprintf(buffer, "Firmware Date:\t%.8s\n", (char *)&info->fw_date);
58 	snd_iprintf(buffer, "Firmware Time:\t%.8s\n", (char *)&info->fw_time);
59 	snd_iprintf(buffer, "Firmware ID:\t0x%X\n", info->fw_id);
60 	snd_iprintf(buffer, "Firmware Ver:\t%d\n", info->fw_ver);
61 	snd_iprintf(buffer, "Base Addr:\t0x%X\n", info->base_addr);
62 	snd_iprintf(buffer, "Max Size:\t%d\n", info->max_size);
63 	snd_iprintf(buffer, "Loader Date:\t%.8s\n", (char *)&info->bld_date);
64 	snd_iprintf(buffer, "Loader Time:\t%.8s\n", (char *)&info->bld_time);
65 
66 end:
67 	kfree(info);
68 }
69 
70 static void
71 proc_read_meters(struct snd_info_entry *entry,
72 		 struct snd_info_buffer *buffer)
73 {
74 	struct snd_bebob *bebob = entry->private_data;
75 	const struct snd_bebob_meter_spec *spec = bebob->spec->meter;
76 	u32 *buf;
77 	unsigned int i, c, channels, size;
78 
79 	if (spec == NULL)
80 		return;
81 
82 	channels = spec->num * 2;
83 	size = channels * sizeof(u32);
84 	buf = kmalloc(size, GFP_KERNEL);
85 	if (buf == NULL)
86 		return;
87 
88 	if (spec->get(bebob, buf, size) < 0)
89 		goto end;
90 
91 	for (i = 0, c = 1; i < channels; i++) {
92 		snd_iprintf(buffer, "%s %d:\t%d\n",
93 			    spec->labels[i / 2], c++, buf[i]);
94 		if ((i + 1 < channels - 1) &&
95 		    (strcmp(spec->labels[i / 2],
96 			    spec->labels[(i + 1) / 2]) != 0))
97 			c = 1;
98 	}
99 end:
100 	kfree(buf);
101 }
102 
103 static void
104 proc_read_formation(struct snd_info_entry *entry,
105 		struct snd_info_buffer *buffer)
106 {
107 	struct snd_bebob *bebob = entry->private_data;
108 	struct snd_bebob_stream_formation *formation;
109 	unsigned int i;
110 
111 	snd_iprintf(buffer, "Output Stream from device:\n");
112 	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
113 	formation = bebob->tx_stream_formations;
114 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
115 		snd_iprintf(buffer,
116 			    "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
117 			    formation[i].pcm, formation[i].midi);
118 	}
119 
120 	snd_iprintf(buffer, "Input Stream to device:\n");
121 	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
122 	formation = bebob->rx_stream_formations;
123 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
124 		snd_iprintf(buffer,
125 			    "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
126 			    formation[i].pcm, formation[i].midi);
127 	}
128 }
129 
130 static void
131 proc_read_clock(struct snd_info_entry *entry,
132 		struct snd_info_buffer *buffer)
133 {
134 	static const char *const clk_labels[] = {
135 		"Internal",
136 		"External",
137 		"SYT-Match",
138 	};
139 	struct snd_bebob *bebob = entry->private_data;
140 	const struct snd_bebob_rate_spec *rate_spec = bebob->spec->rate;
141 	const struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock;
142 	enum snd_bebob_clock_type src;
143 	unsigned int rate;
144 
145 	if (rate_spec->get(bebob, &rate) >= 0)
146 		snd_iprintf(buffer, "Sampling rate: %d\n", rate);
147 
148 	if (snd_bebob_stream_get_clock_src(bebob, &src) >= 0) {
149 		if (clk_spec)
150 			snd_iprintf(buffer, "Clock Source: %s\n",
151 				    clk_labels[src]);
152 		else
153 			snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)\n",
154 				    clk_labels[src], bebob->sync_input_plug);
155 	}
156 }
157 
158 static void
159 add_node(struct snd_bebob *bebob, struct snd_info_entry *root, const char *name,
160 	 void (*op)(struct snd_info_entry *e, struct snd_info_buffer *b))
161 {
162 	struct snd_info_entry *entry;
163 
164 	entry = snd_info_create_card_entry(bebob->card, name, root);
165 	if (entry)
166 		snd_info_set_text_ops(entry, bebob, op);
167 }
168 
169 void snd_bebob_proc_init(struct snd_bebob *bebob)
170 {
171 	struct snd_info_entry *root;
172 
173 	/*
174 	 * All nodes are automatically removed at snd_card_disconnect(),
175 	 * by following to link list.
176 	 */
177 	root = snd_info_create_card_entry(bebob->card, "firewire",
178 					  bebob->card->proc_root);
179 	if (root == NULL)
180 		return;
181 	root->mode = S_IFDIR | 0555;
182 
183 	add_node(bebob, root, "clock", proc_read_clock);
184 	add_node(bebob, root, "firmware", proc_read_hw_info);
185 	add_node(bebob, root, "formation", proc_read_formation);
186 
187 	if (bebob->spec->meter != NULL)
188 		add_node(bebob, root, "meter", proc_read_meters);
189 }
190