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-rw-r--r--sound/usb/proc.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/sound/usb/proc.c b/sound/usb/proc.c
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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 */
31static 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 */
37static 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 */
45static 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
52static 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
61void 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 */
73static 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 (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH)
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
118static 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 snd_usb_get_speed(subs->dev) == 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 } else {
136 snd_iprintf(buffer, " Status: Stop\n");
137 }
138}
139
140static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
141{
142 struct snd_usb_stream *stream = entry->private_data;
143
144 snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
145
146 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
147 snd_iprintf(buffer, "\nPlayback:\n");
148 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
149 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
150 }
151 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
152 snd_iprintf(buffer, "\nCapture:\n");
153 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
154 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
155 }
156}
157
158void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
159{
160 struct snd_info_entry *entry;
161 char name[32];
162 struct snd_card *card = stream->chip->card;
163
164 sprintf(name, "stream%d", stream->pcm_index);
165 if (!snd_card_proc_new(card, name, &entry))
166 snd_info_set_text_ops(entry, stream, proc_pcm_format_read);
167}
168
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