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 (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 } 117 118 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 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 } 139 140 static 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 } 157 158 void 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 } 168 169