| /* |
| * 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 (!atomic_read(&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 (!atomic_read(&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 audioformat *fp; |
| static const char * const sync_types[4] = { |
| "NONE", "ASYNC", "ADAPTIVE", "SYNC" |
| }; |
| |
| list_for_each_entry(fp, &subs->fmt_list, list) { |
| snd_pcm_format_t fmt; |
| |
| 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 & pcm_format_to_bits(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 *data_ep, |
| struct snd_usb_endpoint *sync_ep, |
| struct snd_info_buffer *buffer) |
| { |
| if (!data_ep) |
| return; |
| snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize); |
| snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", |
| subs->speed == USB_SPEED_FULL |
| ? get_full_speed_hz(data_ep->freqm) |
| : get_high_speed_hz(data_ep->freqm), |
| data_ep->freqm >> 16, data_ep->freqm & 0xffff); |
| if (sync_ep && data_ep->freqshift != INT_MIN) { |
| int res = 16 - data_ep->freqshift; |
| snd_iprintf(buffer, " Feedback Format = %d.%d\n", |
| (sync_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, 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); |
| } |
| |