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 "endpoint.h" 29 #include "proc.h" 30 31 /* convert our full speed USB rate into sampling rate in Hz */ 32 static inline unsigned get_full_speed_hz(unsigned int usb_rate) 33 { 34 return (usb_rate * 125 + (1 << 12)) >> 13; 35 } 36 37 /* convert our high speed USB rate into sampling rate in Hz */ 38 static inline unsigned get_high_speed_hz(unsigned int usb_rate) 39 { 40 return (usb_rate * 125 + (1 << 9)) >> 10; 41 } 42 43 /* 44 * common proc files to show the usb device info 45 */ 46 static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 47 { 48 struct snd_usb_audio *chip = entry->private_data; 49 if (!atomic_read(&chip->shutdown)) 50 snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); 51 } 52 53 static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 54 { 55 struct snd_usb_audio *chip = entry->private_data; 56 if (!atomic_read(&chip->shutdown)) 57 snd_iprintf(buffer, "%04x:%04x\n", 58 USB_ID_VENDOR(chip->usb_id), 59 USB_ID_PRODUCT(chip->usb_id)); 60 } 61 62 void snd_usb_audio_create_proc(struct snd_usb_audio *chip) 63 { 64 snd_card_ro_proc_new(chip->card, "usbbus", chip, 65 proc_audio_usbbus_read); 66 snd_card_ro_proc_new(chip->card, "usbid", chip, 67 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 audioformat *fp; 76 static char *sync_types[4] = { 77 "NONE", "ASYNC", "ADAPTIVE", "SYNC" 78 }; 79 80 list_for_each_entry(fp, &subs->fmt_list, list) { 81 snd_pcm_format_t fmt; 82 83 snd_iprintf(buffer, " Interface %d\n", fp->iface); 84 snd_iprintf(buffer, " Altset %d\n", fp->altsetting); 85 snd_iprintf(buffer, " Format:"); 86 for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt) 87 if (fp->formats & pcm_format_to_bits(fmt)) 88 snd_iprintf(buffer, " %s", 89 snd_pcm_format_name(fmt)); 90 snd_iprintf(buffer, "\n"); 91 snd_iprintf(buffer, " Channels: %d\n", fp->channels); 92 snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", 93 fp->endpoint & USB_ENDPOINT_NUMBER_MASK, 94 fp->endpoint & USB_DIR_IN ? "IN" : "OUT", 95 sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); 96 if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { 97 snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", 98 fp->rate_min, fp->rate_max); 99 } else { 100 unsigned int i; 101 snd_iprintf(buffer, " Rates: "); 102 for (i = 0; i < fp->nr_rates; i++) { 103 if (i > 0) 104 snd_iprintf(buffer, ", "); 105 snd_iprintf(buffer, "%d", fp->rate_table[i]); 106 } 107 snd_iprintf(buffer, "\n"); 108 } 109 if (subs->speed != USB_SPEED_FULL) 110 snd_iprintf(buffer, " Data packet interval: %d us\n", 111 125 * (1 << fp->datainterval)); 112 snd_iprintf(buffer, " Bits: %d\n", fp->fmt_bits); 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_ep_status(struct snd_usb_substream *subs, 119 struct snd_usb_endpoint *data_ep, 120 struct snd_usb_endpoint *sync_ep, 121 struct snd_info_buffer *buffer) 122 { 123 if (!data_ep) 124 return; 125 snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize); 126 snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", 127 subs->speed == USB_SPEED_FULL 128 ? get_full_speed_hz(data_ep->freqm) 129 : get_high_speed_hz(data_ep->freqm), 130 data_ep->freqm >> 16, data_ep->freqm & 0xffff); 131 if (sync_ep && data_ep->freqshift != INT_MIN) { 132 int res = 16 - data_ep->freqshift; 133 snd_iprintf(buffer, " Feedback Format = %d.%d\n", 134 (sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res); 135 } 136 } 137 138 static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) 139 { 140 if (subs->running) { 141 snd_iprintf(buffer, " Status: Running\n"); 142 snd_iprintf(buffer, " Interface = %d\n", subs->interface); 143 snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx); 144 proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer); 145 } else { 146 snd_iprintf(buffer, " Status: Stop\n"); 147 } 148 } 149 150 static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) 151 { 152 struct snd_usb_stream *stream = entry->private_data; 153 154 snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); 155 156 if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { 157 snd_iprintf(buffer, "\nPlayback:\n"); 158 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); 159 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); 160 } 161 if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { 162 snd_iprintf(buffer, "\nCapture:\n"); 163 proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); 164 proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); 165 } 166 } 167 168 void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream) 169 { 170 char name[32]; 171 struct snd_card *card = stream->chip->card; 172 173 sprintf(name, "stream%d", stream->pcm_index); 174 snd_card_ro_proc_new(card, name, stream, proc_pcm_format_read); 175 } 176 177