1 /*
2  *   This program is free software; you can redistribute it and/or modify
3  *   it under the terms of the GNU General Public License as published by
4  *   the Free Software Foundation; either version 2 of the License, or
5  *   (at your option) any later version.
6  *
7  *   This program is distributed in the hope that it will be useful,
8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10  *   GNU General Public License for more details.
11  *
12  *   You should have received a copy of the GNU General Public License
13  *   along with this program; if not, write to the Free Software
14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
15  *
16  */
17 
18 #include <linux/init.h>
19 #include <linux/usb.h>
20 
21 #include <sound/core.h>
22 #include <sound/info.h>
23 #include <sound/pcm.h>
24 
25 #include "usbaudio.h"
26 #include "helper.h"
27 #include "card.h"
28 #include "proc.h"
29 
30 /* convert our full speed USB rate into sampling rate in Hz */
get_full_speed_hz(unsigned int usb_rate)31 static inline unsigned get_full_speed_hz(unsigned int usb_rate)
32 {
33 	return (usb_rate * 125 + (1 << 12)) >> 13;
34 }
35 
36 /* convert our high speed USB rate into sampling rate in Hz */
get_high_speed_hz(unsigned int usb_rate)37 static inline unsigned get_high_speed_hz(unsigned int usb_rate)
38 {
39 	return (usb_rate * 125 + (1 << 9)) >> 10;
40 }
41 
42 /*
43  * common proc files to show the usb device info
44  */
proc_audio_usbbus_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)45 static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
46 {
47 	struct snd_usb_audio *chip = entry->private_data;
48 	if (!chip->shutdown)
49 		snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
50 }
51 
proc_audio_usbid_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)52 static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
53 {
54 	struct snd_usb_audio *chip = entry->private_data;
55 	if (!chip->shutdown)
56 		snd_iprintf(buffer, "%04x:%04x\n",
57 			    USB_ID_VENDOR(chip->usb_id),
58 			    USB_ID_PRODUCT(chip->usb_id));
59 }
60 
snd_usb_audio_create_proc(struct snd_usb_audio * chip)61 void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
62 {
63 	struct snd_info_entry *entry;
64 	if (!snd_card_proc_new(chip->card, "usbbus", &entry))
65 		snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read);
66 	if (!snd_card_proc_new(chip->card, "usbid", &entry))
67 		snd_info_set_text_ops(entry, chip, proc_audio_usbid_read);
68 }
69 
70 /*
71  * proc interface for list the supported pcm formats
72  */
proc_dump_substream_formats(struct snd_usb_substream * subs,struct snd_info_buffer * buffer)73 static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
74 {
75 	struct list_head *p;
76 	static char *sync_types[4] = {
77 		"NONE", "ASYNC", "ADAPTIVE", "SYNC"
78 	};
79 
80 	list_for_each(p, &subs->fmt_list) {
81 		struct audioformat *fp;
82 		snd_pcm_format_t fmt;
83 		fp = list_entry(p, struct audioformat, list);
84 		snd_iprintf(buffer, "  Interface %d\n", fp->iface);
85 		snd_iprintf(buffer, "    Altset %d\n", fp->altsetting);
86 		snd_iprintf(buffer, "    Format:");
87 		for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
88 			if (fp->formats & (1uLL << fmt))
89 				snd_iprintf(buffer, " %s",
90 					    snd_pcm_format_name(fmt));
91 		snd_iprintf(buffer, "\n");
92 		snd_iprintf(buffer, "    Channels: %d\n", fp->channels);
93 		snd_iprintf(buffer, "    Endpoint: %d %s (%s)\n",
94 			    fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
95 			    fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
96 			    sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
97 		if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
98 			snd_iprintf(buffer, "    Rates: %d - %d (continuous)\n",
99 				    fp->rate_min, fp->rate_max);
100 		} else {
101 			unsigned int i;
102 			snd_iprintf(buffer, "    Rates: ");
103 			for (i = 0; i < fp->nr_rates; i++) {
104 				if (i > 0)
105 					snd_iprintf(buffer, ", ");
106 				snd_iprintf(buffer, "%d", fp->rate_table[i]);
107 			}
108 			snd_iprintf(buffer, "\n");
109 		}
110 		if (subs->speed != USB_SPEED_FULL)
111 			snd_iprintf(buffer, "    Data packet interval: %d us\n",
112 				    125 * (1 << fp->datainterval));
113 		// snd_iprintf(buffer, "    Max Packet Size = %d\n", fp->maxpacksize);
114 		// snd_iprintf(buffer, "    EP Attribute = %#x\n", fp->attributes);
115 	}
116 }
117 
proc_dump_substream_status(struct snd_usb_substream * subs,struct snd_info_buffer * buffer)118 static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
119 {
120 	if (subs->running) {
121 		unsigned int i;
122 		snd_iprintf(buffer, "  Status: Running\n");
123 		snd_iprintf(buffer, "    Interface = %d\n", subs->interface);
124 		snd_iprintf(buffer, "    Altset = %d\n", subs->altset_idx);
125 		snd_iprintf(buffer, "    URBs = %d [ ", subs->nurbs);
126 		for (i = 0; i < subs->nurbs; i++)
127 			snd_iprintf(buffer, "%d ", subs->dataurb[i].packets);
128 		snd_iprintf(buffer, "]\n");
129 		snd_iprintf(buffer, "    Packet Size = %d\n", subs->curpacksize);
130 		snd_iprintf(buffer, "    Momentary freq = %u Hz (%#x.%04x)\n",
131 			    subs->speed == USB_SPEED_FULL
132 			    ? get_full_speed_hz(subs->freqm)
133 			    : get_high_speed_hz(subs->freqm),
134 			    subs->freqm >> 16, subs->freqm & 0xffff);
135 		if (subs->freqshift != INT_MIN)
136 			snd_iprintf(buffer, "    Feedback Format = %d.%d\n",
137 				    (subs->syncmaxsize > 3 ? 32 : 24)
138 						- (16 - subs->freqshift),
139 				    16 - subs->freqshift);
140 	} else {
141 		snd_iprintf(buffer, "  Status: Stop\n");
142 	}
143 }
144 
proc_pcm_format_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)145 static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
146 {
147 	struct snd_usb_stream *stream = entry->private_data;
148 
149 	snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
150 
151 	if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
152 		snd_iprintf(buffer, "\nPlayback:\n");
153 		proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
154 		proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
155 	}
156 	if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
157 		snd_iprintf(buffer, "\nCapture:\n");
158 		proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
159 		proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
160 	}
161 }
162 
snd_usb_proc_pcm_format_add(struct snd_usb_stream * stream)163 void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
164 {
165 	struct snd_info_entry *entry;
166 	char name[32];
167 	struct snd_card *card = stream->chip->card;
168 
169 	sprintf(name, "stream%d", stream->pcm_index);
170 	if (!snd_card_proc_new(card, name, &entry))
171 		snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
172 }
173 
174