1 /*
2  * bebob_proc.c - a part of driver for BeBoB based devices
3  *
4  * Copyright (c) 2013-2014 Takashi Sakamoto
5  *
6  * Licensed under the terms of the GNU General Public License, version 2.
7  */
8 
9 #include "./bebob.h"
10 
11 /* contents of information register */
12 struct hw_info {
13 	u64 manufacturer;
14 	u32 protocol_ver;
15 	u32 bld_ver;
16 	u32 guid[2];
17 	u32 model_id;
18 	u32 model_rev;
19 	u64 fw_date;
20 	u64 fw_time;
21 	u32 fw_id;
22 	u32 fw_ver;
23 	u32 base_addr;
24 	u32 max_size;
25 	u64 bld_date;
26 	u64 bld_time;
27 /* may not used in product
28 	u64 dbg_date;
29 	u64 dbg_time;
30 	u32 dbg_id;
31 	u32 dbg_version;
32 */
33 } __packed;
34 
35 static void
36 proc_read_hw_info(struct snd_info_entry *entry,
37 		  struct snd_info_buffer *buffer)
38 {
39 	struct snd_bebob *bebob = entry->private_data;
40 	struct hw_info *info;
41 
42 	info = kzalloc(sizeof(struct hw_info), GFP_KERNEL);
43 	if (info == NULL)
44 		return;
45 
46 	if (snd_bebob_read_block(bebob->unit, 0,
47 				   info, sizeof(struct hw_info)) < 0)
48 		goto end;
49 
50 	snd_iprintf(buffer, "Manufacturer:\t%.8s\n",
51 		    (char *)&info->manufacturer);
52 	snd_iprintf(buffer, "Protocol Ver:\t%d\n", info->protocol_ver);
53 	snd_iprintf(buffer, "Build Ver:\t%d\n", info->bld_ver);
54 	snd_iprintf(buffer, "GUID:\t\t0x%.8X%.8X\n",
55 		    info->guid[0], info->guid[1]);
56 	snd_iprintf(buffer, "Model ID:\t0x%02X\n", info->model_id);
57 	snd_iprintf(buffer, "Model Rev:\t%d\n", info->model_rev);
58 	snd_iprintf(buffer, "Firmware Date:\t%.8s\n", (char *)&info->fw_date);
59 	snd_iprintf(buffer, "Firmware Time:\t%.8s\n", (char *)&info->fw_time);
60 	snd_iprintf(buffer, "Firmware ID:\t0x%X\n", info->fw_id);
61 	snd_iprintf(buffer, "Firmware Ver:\t%d\n", info->fw_ver);
62 	snd_iprintf(buffer, "Base Addr:\t0x%X\n", info->base_addr);
63 	snd_iprintf(buffer, "Max Size:\t%d\n", info->max_size);
64 	snd_iprintf(buffer, "Loader Date:\t%.8s\n", (char *)&info->bld_date);
65 	snd_iprintf(buffer, "Loader Time:\t%.8s\n", (char *)&info->bld_time);
66 
67 end:
68 	kfree(info);
69 }
70 
71 static void
72 proc_read_meters(struct snd_info_entry *entry,
73 		 struct snd_info_buffer *buffer)
74 {
75 	struct snd_bebob *bebob = entry->private_data;
76 	struct snd_bebob_meter_spec *spec = bebob->spec->meter;
77 	u32 *buf;
78 	unsigned int i, c, channels, size;
79 
80 	if (spec == NULL)
81 		return;
82 
83 	channels = spec->num * 2;
84 	size = channels * sizeof(u32);
85 	buf = kmalloc(size, GFP_KERNEL);
86 	if (buf == NULL)
87 		return;
88 
89 	if (spec->get(bebob, buf, size) < 0)
90 		goto end;
91 
92 	for (i = 0, c = 1; i < channels; i++) {
93 		snd_iprintf(buffer, "%s %d:\t%d\n",
94 			    spec->labels[i / 2], c++, buf[i]);
95 		if ((i + 1 < channels - 1) &&
96 		    (strcmp(spec->labels[i / 2],
97 			    spec->labels[(i + 1) / 2]) != 0))
98 			c = 1;
99 	}
100 end:
101 	kfree(buf);
102 }
103 
104 static void
105 proc_read_formation(struct snd_info_entry *entry,
106 		struct snd_info_buffer *buffer)
107 {
108 	struct snd_bebob *bebob = entry->private_data;
109 	struct snd_bebob_stream_formation *formation;
110 	unsigned int i;
111 
112 	snd_iprintf(buffer, "Output Stream from device:\n");
113 	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
114 	formation = bebob->tx_stream_formations;
115 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
116 		snd_iprintf(buffer,
117 			    "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
118 			    formation[i].pcm, formation[i].midi);
119 	}
120 
121 	snd_iprintf(buffer, "Input Stream to device:\n");
122 	snd_iprintf(buffer, "\tRate\tPCM\tMIDI\n");
123 	formation = bebob->rx_stream_formations;
124 	for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) {
125 		snd_iprintf(buffer,
126 			    "\t%d\t%d\t%d\n", snd_bebob_rate_table[i],
127 			    formation[i].pcm, formation[i].midi);
128 	}
129 }
130 
131 static void
132 proc_read_clock(struct snd_info_entry *entry,
133 		struct snd_info_buffer *buffer)
134 {
135 	struct snd_bebob *bebob = entry->private_data;
136 	struct snd_bebob_rate_spec *rate_spec = bebob->spec->rate;
137 	struct snd_bebob_clock_spec *clk_spec = bebob->spec->clock;
138 	unsigned int rate, id;
139 	bool internal;
140 
141 	if (rate_spec->get(bebob, &rate) >= 0)
142 		snd_iprintf(buffer, "Sampling rate: %d\n", rate);
143 
144 	if (clk_spec) {
145 		if (clk_spec->get(bebob, &id) >= 0)
146 			snd_iprintf(buffer, "Clock Source: %s\n",
147 				    clk_spec->labels[id]);
148 	} else {
149 		if (snd_bebob_stream_check_internal_clock(bebob,
150 							  &internal) >= 0)
151 			snd_iprintf(buffer, "Clock Source: %s (MSU-dest: %d)\n",
152 				    (internal) ? "Internal" : "External",
153 				    bebob->sync_input_plug);
154 	}
155 }
156 
157 static void
158 add_node(struct snd_bebob *bebob, struct snd_info_entry *root, const char *name,
159 	 void (*op)(struct snd_info_entry *e, struct snd_info_buffer *b))
160 {
161 	struct snd_info_entry *entry;
162 
163 	entry = snd_info_create_card_entry(bebob->card, name, root);
164 	if (entry == NULL)
165 		return;
166 
167 	snd_info_set_text_ops(entry, bebob, op);
168 	if (snd_info_register(entry) < 0)
169 		snd_info_free_entry(entry);
170 }
171 
172 void snd_bebob_proc_init(struct snd_bebob *bebob)
173 {
174 	struct snd_info_entry *root;
175 
176 	/*
177 	 * All nodes are automatically removed at snd_card_disconnect(),
178 	 * by following to link list.
179 	 */
180 	root = snd_info_create_card_entry(bebob->card, "firewire",
181 					  bebob->card->proc_root);
182 	if (root == NULL)
183 		return;
184 	root->mode = S_IFDIR | S_IRUGO | S_IXUGO;
185 	if (snd_info_register(root) < 0) {
186 		snd_info_free_entry(root);
187 		return;
188 	}
189 
190 	add_node(bebob, root, "clock", proc_read_clock);
191 	add_node(bebob, root, "firmware", proc_read_hw_info);
192 	add_node(bebob, root, "formation", proc_read_formation);
193 
194 	if (bebob->spec->meter != NULL)
195 		add_node(bebob, root, "meter", proc_read_meters);
196 }
197