1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | */ |
4 | |
5 | #include <linux/init.h> |
6 | #include <linux/usb.h> |
7 | |
8 | #include <sound/core.h> |
9 | #include <sound/info.h> |
10 | #include <sound/pcm.h> |
11 | |
12 | #include "usbaudio.h" |
13 | #include "helper.h" |
14 | #include "card.h" |
15 | #include "endpoint.h" |
16 | #include "proc.h" |
17 | |
18 | /* convert our full speed USB rate into sampling rate in Hz */ |
19 | static inline unsigned get_full_speed_hz(unsigned int usb_rate) |
20 | { |
21 | return (usb_rate * 125 + (1 << 12)) >> 13; |
22 | } |
23 | |
24 | /* convert our high speed USB rate into sampling rate in Hz */ |
25 | static inline unsigned get_high_speed_hz(unsigned int usb_rate) |
26 | { |
27 | return (usb_rate * 125 + (1 << 9)) >> 10; |
28 | } |
29 | |
30 | /* |
31 | * common proc files to show the usb device info |
32 | */ |
33 | static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
34 | { |
35 | struct snd_usb_audio *chip = entry->private_data; |
36 | if (!atomic_read(v: &chip->shutdown)) |
37 | snd_iprintf(buffer, "%03d/%03d\n" , chip->dev->bus->busnum, chip->dev->devnum); |
38 | } |
39 | |
40 | static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
41 | { |
42 | struct snd_usb_audio *chip = entry->private_data; |
43 | if (!atomic_read(v: &chip->shutdown)) |
44 | snd_iprintf(buffer, "%04x:%04x\n" , |
45 | USB_ID_VENDOR(chip->usb_id), |
46 | USB_ID_PRODUCT(chip->usb_id)); |
47 | } |
48 | |
49 | void snd_usb_audio_create_proc(struct snd_usb_audio *chip) |
50 | { |
51 | snd_card_ro_proc_new(card: chip->card, name: "usbbus" , private_data: chip, |
52 | read: proc_audio_usbbus_read); |
53 | snd_card_ro_proc_new(card: chip->card, name: "usbid" , private_data: chip, |
54 | read: proc_audio_usbid_read); |
55 | } |
56 | |
57 | static const char * const channel_labels[] = { |
58 | [SNDRV_CHMAP_NA] = "N/A" , |
59 | [SNDRV_CHMAP_MONO] = "MONO" , |
60 | [SNDRV_CHMAP_FL] = "FL" , |
61 | [SNDRV_CHMAP_FR] = "FR" , |
62 | [SNDRV_CHMAP_FC] = "FC" , |
63 | [SNDRV_CHMAP_LFE] = "LFE" , |
64 | [SNDRV_CHMAP_RL] = "RL" , |
65 | [SNDRV_CHMAP_RR] = "RR" , |
66 | [SNDRV_CHMAP_FLC] = "FLC" , |
67 | [SNDRV_CHMAP_FRC] = "FRC" , |
68 | [SNDRV_CHMAP_RC] = "RC" , |
69 | [SNDRV_CHMAP_SL] = "SL" , |
70 | [SNDRV_CHMAP_SR] = "SR" , |
71 | [SNDRV_CHMAP_TC] = "TC" , |
72 | [SNDRV_CHMAP_TFL] = "TFL" , |
73 | [SNDRV_CHMAP_TFC] = "TFC" , |
74 | [SNDRV_CHMAP_TFR] = "TFR" , |
75 | [SNDRV_CHMAP_TRL] = "TRL" , |
76 | [SNDRV_CHMAP_TRC] = "TRC" , |
77 | [SNDRV_CHMAP_TRR] = "TRR" , |
78 | [SNDRV_CHMAP_TFLC] = "TFLC" , |
79 | [SNDRV_CHMAP_TFRC] = "TFRC" , |
80 | [SNDRV_CHMAP_LLFE] = "LLFE" , |
81 | [SNDRV_CHMAP_RLFE] = "RLFE" , |
82 | [SNDRV_CHMAP_TSL] = "TSL" , |
83 | [SNDRV_CHMAP_TSR] = "TSR" , |
84 | [SNDRV_CHMAP_BC] = "BC" , |
85 | [SNDRV_CHMAP_RLC] = "RLC" , |
86 | [SNDRV_CHMAP_RRC] = "RRC" , |
87 | }; |
88 | |
89 | /* |
90 | * proc interface for list the supported pcm formats |
91 | */ |
92 | static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
93 | { |
94 | struct audioformat *fp; |
95 | static const char * const sync_types[4] = { |
96 | "NONE" , "ASYNC" , "ADAPTIVE" , "SYNC" |
97 | }; |
98 | |
99 | list_for_each_entry(fp, &subs->fmt_list, list) { |
100 | snd_pcm_format_t fmt; |
101 | |
102 | snd_iprintf(buffer, " Interface %d\n" , fp->iface); |
103 | snd_iprintf(buffer, " Altset %d\n" , fp->altsetting); |
104 | snd_iprintf(buffer, " Format:" ); |
105 | pcm_for_each_format(fmt) |
106 | if (fp->formats & pcm_format_to_bits(pcm_format: fmt)) |
107 | snd_iprintf(buffer, " %s" , |
108 | snd_pcm_format_name(fmt)); |
109 | snd_iprintf(buffer, "\n" ); |
110 | snd_iprintf(buffer, " Channels: %d\n" , fp->channels); |
111 | snd_iprintf(buffer, " Endpoint: 0x%02x (%d %s) (%s)\n" , |
112 | fp->endpoint, |
113 | fp->endpoint & USB_ENDPOINT_NUMBER_MASK, |
114 | fp->endpoint & USB_DIR_IN ? "IN" : "OUT" , |
115 | sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); |
116 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { |
117 | snd_iprintf(buffer, " Rates: %d - %d (continuous)\n" , |
118 | fp->rate_min, fp->rate_max); |
119 | } else { |
120 | unsigned int i; |
121 | snd_iprintf(buffer, " Rates: " ); |
122 | for (i = 0; i < fp->nr_rates; i++) { |
123 | if (i > 0) |
124 | snd_iprintf(buffer, ", " ); |
125 | snd_iprintf(buffer, "%d" , fp->rate_table[i]); |
126 | } |
127 | snd_iprintf(buffer, "\n" ); |
128 | } |
129 | if (subs->speed != USB_SPEED_FULL) |
130 | snd_iprintf(buffer, " Data packet interval: %d us\n" , |
131 | 125 * (1 << fp->datainterval)); |
132 | snd_iprintf(buffer, " Bits: %d\n" , fp->fmt_bits); |
133 | |
134 | if (fp->dsd_raw) |
135 | snd_iprintf(buffer, " DSD raw: DOP=%d, bitrev=%d\n" , |
136 | fp->dsd_dop, fp->dsd_bitrev); |
137 | |
138 | if (fp->chmap) { |
139 | const struct snd_pcm_chmap_elem *map = fp->chmap; |
140 | int c; |
141 | |
142 | snd_iprintf(buffer, " Channel map:" ); |
143 | for (c = 0; c < map->channels; c++) { |
144 | if (map->map[c] >= ARRAY_SIZE(channel_labels) || |
145 | !channel_labels[map->map[c]]) |
146 | snd_iprintf(buffer, " --" ); |
147 | else |
148 | snd_iprintf(buffer, " %s" , |
149 | channel_labels[map->map[c]]); |
150 | } |
151 | snd_iprintf(buffer, "\n" ); |
152 | } |
153 | |
154 | if (fp->sync_ep) { |
155 | snd_iprintf(buffer, " Sync Endpoint: 0x%02x (%d %s)\n" , |
156 | fp->sync_ep, |
157 | fp->sync_ep & USB_ENDPOINT_NUMBER_MASK, |
158 | fp->sync_ep & USB_DIR_IN ? "IN" : "OUT" ); |
159 | snd_iprintf(buffer, " Sync EP Interface: %d\n" , |
160 | fp->sync_iface); |
161 | snd_iprintf(buffer, " Sync EP Altset: %d\n" , |
162 | fp->sync_altsetting); |
163 | snd_iprintf(buffer, " Implicit Feedback Mode: %s\n" , |
164 | fp->implicit_fb ? "Yes" : "No" ); |
165 | } |
166 | |
167 | // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); |
168 | // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes); |
169 | } |
170 | } |
171 | |
172 | static void proc_dump_ep_status(struct snd_usb_substream *subs, |
173 | struct snd_usb_endpoint *data_ep, |
174 | struct snd_usb_endpoint *sync_ep, |
175 | struct snd_info_buffer *buffer) |
176 | { |
177 | if (!data_ep) |
178 | return; |
179 | snd_iprintf(buffer, " Packet Size = %d\n" , data_ep->curpacksize); |
180 | snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n" , |
181 | subs->speed == USB_SPEED_FULL |
182 | ? get_full_speed_hz(data_ep->freqm) |
183 | : get_high_speed_hz(data_ep->freqm), |
184 | data_ep->freqm >> 16, data_ep->freqm & 0xffff); |
185 | if (sync_ep && data_ep->freqshift != INT_MIN) { |
186 | int res = 16 - data_ep->freqshift; |
187 | snd_iprintf(buffer, " Feedback Format = %d.%d\n" , |
188 | (sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res); |
189 | } |
190 | } |
191 | |
192 | static void proc_dump_substream_status(struct snd_usb_audio *chip, |
193 | struct snd_usb_substream *subs, |
194 | struct snd_info_buffer *buffer) |
195 | { |
196 | mutex_lock(&chip->mutex); |
197 | if (subs->running) { |
198 | snd_iprintf(buffer, " Status: Running\n" ); |
199 | if (subs->cur_audiofmt) { |
200 | snd_iprintf(buffer, " Interface = %d\n" , subs->cur_audiofmt->iface); |
201 | snd_iprintf(buffer, " Altset = %d\n" , subs->cur_audiofmt->altsetting); |
202 | } |
203 | proc_dump_ep_status(subs, data_ep: subs->data_endpoint, sync_ep: subs->sync_endpoint, buffer); |
204 | } else { |
205 | snd_iprintf(buffer, " Status: Stop\n" ); |
206 | } |
207 | mutex_unlock(lock: &chip->mutex); |
208 | } |
209 | |
210 | static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
211 | { |
212 | struct snd_usb_stream *stream = entry->private_data; |
213 | struct snd_usb_audio *chip = stream->chip; |
214 | |
215 | snd_iprintf(buffer, "%s : %s\n" , chip->card->longname, stream->pcm->name); |
216 | |
217 | if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { |
218 | snd_iprintf(buffer, "\nPlayback:\n" ); |
219 | proc_dump_substream_status(chip, subs: &stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); |
220 | proc_dump_substream_formats(subs: &stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); |
221 | } |
222 | if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { |
223 | snd_iprintf(buffer, "\nCapture:\n" ); |
224 | proc_dump_substream_status(chip, subs: &stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); |
225 | proc_dump_substream_formats(subs: &stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); |
226 | } |
227 | } |
228 | |
229 | void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream) |
230 | { |
231 | char name[32]; |
232 | struct snd_card *card = stream->chip->card; |
233 | |
234 | sprintf(buf: name, fmt: "stream%d" , stream->pcm_index); |
235 | snd_card_ro_proc_new(card, name, private_data: stream, read: proc_pcm_format_read); |
236 | } |
237 | |
238 | |