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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
163 lines
5.2 KiB
C
163 lines
5.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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*/
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#include <linux/init.h>
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#include <linux/usb.h>
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#include <sound/core.h>
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#include <sound/info.h>
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#include <sound/pcm.h>
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#include "usbaudio.h"
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#include "helper.h"
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#include "card.h"
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#include "endpoint.h"
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#include "proc.h"
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/* convert our full speed USB rate into sampling rate in Hz */
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static inline unsigned get_full_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 12)) >> 13;
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}
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/* convert our high speed USB rate into sampling rate in Hz */
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static inline unsigned get_high_speed_hz(unsigned int usb_rate)
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{
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return (usb_rate * 125 + (1 << 9)) >> 10;
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}
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/*
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* common proc files to show the usb device info
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*/
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static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_audio *chip = entry->private_data;
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if (!atomic_read(&chip->shutdown))
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snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum);
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}
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static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_audio *chip = entry->private_data;
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if (!atomic_read(&chip->shutdown))
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snd_iprintf(buffer, "%04x:%04x\n",
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USB_ID_VENDOR(chip->usb_id),
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USB_ID_PRODUCT(chip->usb_id));
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}
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void snd_usb_audio_create_proc(struct snd_usb_audio *chip)
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{
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snd_card_ro_proc_new(chip->card, "usbbus", chip,
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proc_audio_usbbus_read);
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snd_card_ro_proc_new(chip->card, "usbid", chip,
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proc_audio_usbid_read);
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}
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/*
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* proc interface for list the supported pcm formats
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*/
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static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
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{
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struct audioformat *fp;
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static char *sync_types[4] = {
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"NONE", "ASYNC", "ADAPTIVE", "SYNC"
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};
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list_for_each_entry(fp, &subs->fmt_list, list) {
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snd_pcm_format_t fmt;
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snd_iprintf(buffer, " Interface %d\n", fp->iface);
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snd_iprintf(buffer, " Altset %d\n", fp->altsetting);
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snd_iprintf(buffer, " Format:");
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for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt)
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if (fp->formats & pcm_format_to_bits(fmt))
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snd_iprintf(buffer, " %s",
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snd_pcm_format_name(fmt));
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snd_iprintf(buffer, "\n");
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snd_iprintf(buffer, " Channels: %d\n", fp->channels);
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snd_iprintf(buffer, " Endpoint: %d %s (%s)\n",
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fp->endpoint & USB_ENDPOINT_NUMBER_MASK,
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fp->endpoint & USB_DIR_IN ? "IN" : "OUT",
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sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]);
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if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) {
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snd_iprintf(buffer, " Rates: %d - %d (continuous)\n",
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fp->rate_min, fp->rate_max);
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} else {
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unsigned int i;
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snd_iprintf(buffer, " Rates: ");
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for (i = 0; i < fp->nr_rates; i++) {
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if (i > 0)
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snd_iprintf(buffer, ", ");
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snd_iprintf(buffer, "%d", fp->rate_table[i]);
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}
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snd_iprintf(buffer, "\n");
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}
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if (subs->speed != USB_SPEED_FULL)
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snd_iprintf(buffer, " Data packet interval: %d us\n",
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125 * (1 << fp->datainterval));
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snd_iprintf(buffer, " Bits: %d\n", fp->fmt_bits);
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// snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize);
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// snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes);
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}
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}
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static void proc_dump_ep_status(struct snd_usb_substream *subs,
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struct snd_usb_endpoint *data_ep,
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struct snd_usb_endpoint *sync_ep,
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struct snd_info_buffer *buffer)
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{
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if (!data_ep)
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return;
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snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize);
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snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n",
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subs->speed == USB_SPEED_FULL
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? get_full_speed_hz(data_ep->freqm)
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: get_high_speed_hz(data_ep->freqm),
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data_ep->freqm >> 16, data_ep->freqm & 0xffff);
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if (sync_ep && data_ep->freqshift != INT_MIN) {
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int res = 16 - data_ep->freqshift;
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snd_iprintf(buffer, " Feedback Format = %d.%d\n",
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(sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res);
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}
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}
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static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer)
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{
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if (subs->running) {
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snd_iprintf(buffer, " Status: Running\n");
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snd_iprintf(buffer, " Interface = %d\n", subs->interface);
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snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx);
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proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer);
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} else {
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snd_iprintf(buffer, " Status: Stop\n");
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}
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}
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static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
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{
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struct snd_usb_stream *stream = entry->private_data;
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snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name);
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if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) {
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snd_iprintf(buffer, "\nPlayback:\n");
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proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
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proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer);
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}
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if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) {
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snd_iprintf(buffer, "\nCapture:\n");
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proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
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proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer);
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}
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}
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void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream)
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{
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char name[32];
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struct snd_card *card = stream->chip->card;
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sprintf(name, "stream%d", stream->pcm_index);
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snd_card_ro_proc_new(card, name, stream, proc_pcm_format_read);
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}
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