/* * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include <linux/init.h> #include <linux/usb.h> #include <sound/core.h> #include <sound/info.h> #include <sound/pcm.h> #include "usbaudio.h" #include "helper.h" #include "card.h" #include "endpoint.h" #include "proc.h" /* convert our full speed USB rate into sampling rate in Hz */ static inline unsigned get_full_speed_hz(unsigned int usb_rate) { return (usb_rate * 125 + (1 << 12)) >> 13; } /* convert our high speed USB rate into sampling rate in Hz */ static inline unsigned get_high_speed_hz(unsigned int usb_rate) { return (usb_rate * 125 + (1 << 9)) >> 10; } /* * common proc files to show the usb device info */ static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_usb_audio *chip = entry->private_data; if (!chip->shutdown) snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); } static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_usb_audio *chip = entry->private_data; if (!chip->shutdown) snd_iprintf(buffer, "%04x:%04x\n", USB_ID_VENDOR(chip->usb_id), USB_ID_PRODUCT(chip->usb_id)); } void snd_usb_audio_create_proc(struct snd_usb_audio *chip) { struct snd_info_entry *entry; if (!snd_card_proc_new(chip->card, "usbbus", &entry)) snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); if (!snd_card_proc_new(chip->card, "usbid", &entry)) snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); } /* * proc interface for list the supported pcm formats */ static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) { struct list_head *p; static char *sync_types[4] = { "NONE", "ASYNC", "ADAPTIVE", "SYNC" }; list_for_each(p, &subs->fmt_list) { struct audioformat *fp; snd_pcm_format_t fmt; fp = list_entry(p, struct audioformat, list); snd_iprintf(buffer, " Interface %d\n", fp->iface); snd_iprintf(buffer, " Altset %d\n", fp->altsetting); snd_iprintf(buffer, " Format:"); for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt) if (fp->formats & (1uLL << fmt)) snd_iprintf(buffer, " %s", snd_pcm_format_name(fmt)); snd_iprintf(buffer, "\n"); snd_iprintf(buffer, " Channels: %d\n", fp->channels); snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", fp->endpoint & USB_ENDPOINT_NUMBER_MASK, fp->endpoint & USB_DIR_IN ? "IN" : "OUT", sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", fp->rate_min, fp->rate_max); } else { unsigned int i; snd_iprintf(buffer, " Rates: "); for (i = 0; i < fp->nr_rates; i++) { if (i > 0) snd_iprintf(buffer, ", "); snd_iprintf(buffer, "%d", fp->rate_table[i]); } snd_iprintf(buffer, "\n"); } if (subs->speed != USB_SPEED_FULL) snd_iprintf(buffer, " Data packet interval: %d us\n", 125 * (1 << fp->datainterval)); // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes); } } static void proc_dump_ep_status(struct snd_usb_substream *subs, struct snd_usb_endpoint *ep, struct snd_info_buffer *buffer) { if (!ep) return; snd_iprintf(buffer, " Packet Size = %d\n", ep->curpacksize); snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", subs->speed == USB_SPEED_FULL ? get_full_speed_hz(ep->freqm) : get_high_speed_hz(ep->freqm), ep->freqm >> 16, ep->freqm & 0xffff); if (ep->freqshift != INT_MIN) { int res = 16 - ep->freqshift; snd_iprintf(buffer, " Feedback Format = %d.%d\n", (ep->syncmaxsize > 3 ? 32 : 24) - res, res); } } static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) { if (subs->running) { snd_iprintf(buffer, " Status: Running\n"); snd_iprintf(buffer, " Interface = %d\n", subs->interface); snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx); proc_dump_ep_status(subs, subs->data_endpoint, buffer); proc_dump_ep_status(subs, subs->sync_endpoint, buffer); } else { snd_iprintf(buffer, " Status: Stop\n"); } } static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { struct snd_usb_stream *stream = entry->private_data; snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { snd_iprintf(buffer, "\nPlayback:\n"); proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); } if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { snd_iprintf(buffer, "\nCapture:\n"); proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); } } void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream) { struct snd_info_entry *entry; char name[32]; struct snd_card *card = stream->chip->card; sprintf(name, "stream%d", stream->pcm_index); if (!snd_card_proc_new(card, name, &entry)) snd_info_set_text_ops(entry, stream, proc_pcm_format_read); }