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237 lines
7.3 KiB
237 lines
7.3 KiB
// 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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static const char * const channel_labels[] = { |
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[SNDRV_CHMAP_NA] = "N/A", |
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[SNDRV_CHMAP_MONO] = "MONO", |
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[SNDRV_CHMAP_FL] = "FL", |
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[SNDRV_CHMAP_FR] = "FR", |
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[SNDRV_CHMAP_FC] = "FC", |
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[SNDRV_CHMAP_LFE] = "LFE", |
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[SNDRV_CHMAP_RL] = "RL", |
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[SNDRV_CHMAP_RR] = "RR", |
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[SNDRV_CHMAP_FLC] = "FLC", |
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[SNDRV_CHMAP_FRC] = "FRC", |
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[SNDRV_CHMAP_RC] = "RC", |
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[SNDRV_CHMAP_SL] = "SL", |
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[SNDRV_CHMAP_SR] = "SR", |
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[SNDRV_CHMAP_TC] = "TC", |
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[SNDRV_CHMAP_TFL] = "TFL", |
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[SNDRV_CHMAP_TFC] = "TFC", |
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[SNDRV_CHMAP_TFR] = "TFR", |
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[SNDRV_CHMAP_TRL] = "TRL", |
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[SNDRV_CHMAP_TRC] = "TRC", |
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[SNDRV_CHMAP_TRR] = "TRR", |
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[SNDRV_CHMAP_TFLC] = "TFLC", |
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[SNDRV_CHMAP_TFRC] = "TFRC", |
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[SNDRV_CHMAP_LLFE] = "LLFE", |
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[SNDRV_CHMAP_RLFE] = "RLFE", |
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[SNDRV_CHMAP_TSL] = "TSL", |
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[SNDRV_CHMAP_TSR] = "TSR", |
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[SNDRV_CHMAP_BC] = "BC", |
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[SNDRV_CHMAP_RLC] = "RLC", |
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[SNDRV_CHMAP_RRC] = "RRC", |
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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 const char * const 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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pcm_for_each_format(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: 0x%02x (%d %s) (%s)\n", |
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fp->endpoint, |
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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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if (fp->dsd_raw) |
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snd_iprintf(buffer, " DSD raw: DOP=%d, bitrev=%d\n", |
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fp->dsd_dop, fp->dsd_bitrev); |
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if (fp->chmap) { |
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const struct snd_pcm_chmap_elem *map = fp->chmap; |
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int c; |
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snd_iprintf(buffer, " Channel map:"); |
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for (c = 0; c < map->channels; c++) { |
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if (map->map[c] >= ARRAY_SIZE(channel_labels) || |
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!channel_labels[map->map[c]]) |
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snd_iprintf(buffer, " --"); |
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else |
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snd_iprintf(buffer, " %s", |
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channel_labels[map->map[c]]); |
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} |
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snd_iprintf(buffer, "\n"); |
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} |
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if (fp->sync_ep) { |
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snd_iprintf(buffer, " Sync Endpoint: 0x%02x (%d %s)\n", |
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fp->sync_ep, |
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fp->sync_ep & USB_ENDPOINT_NUMBER_MASK, |
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fp->sync_ep & USB_DIR_IN ? "IN" : "OUT"); |
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snd_iprintf(buffer, " Sync EP Interface: %d\n", |
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fp->sync_iface); |
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snd_iprintf(buffer, " Sync EP Altset: %d\n", |
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fp->sync_altsetting); |
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snd_iprintf(buffer, " Implicit Feedback Mode: %s\n", |
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fp->implicit_fb ? "Yes" : "No"); |
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} |
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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_audio *chip, |
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struct snd_usb_substream *subs, |
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struct snd_info_buffer *buffer) |
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{ |
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mutex_lock(&chip->mutex); |
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if (subs->running) { |
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snd_iprintf(buffer, " Status: Running\n"); |
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if (subs->cur_audiofmt) { |
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snd_iprintf(buffer, " Interface = %d\n", subs->cur_audiofmt->iface); |
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snd_iprintf(buffer, " Altset = %d\n", subs->cur_audiofmt->altsetting); |
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} |
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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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mutex_unlock(&chip->mutex); |
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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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struct snd_usb_audio *chip = stream->chip; |
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snd_iprintf(buffer, "%s : %s\n", 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(chip, &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(chip, &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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