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TOMOYO Linux Cross Reference
Linux/sound/usb/proc.c

Version: ~ [ linux-5.6-rc7 ] ~ [ linux-5.5.11 ] ~ [ linux-5.4.27 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.112 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.174 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.217 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.217 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.82 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 */
 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 */
 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  */
 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 
 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 
 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  */
 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 
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 
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 
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 

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