1 // SPDX-License-Identifier: GPL-2.0-or-later 1
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 sampli
19 static inline unsigned get_full_speed_hz(unsig
20 {
21 return (usb_rate * 125 + (1 << 12)) >>
22 }
23
24 /* convert our high speed USB rate into sampli
25 static inline unsigned get_high_speed_hz(unsig
26 {
27 return (usb_rate * 125 + (1 << 9)) >>
28 }
29
30 /*
31 * common proc files to show the usb device in
32 */
33 static void proc_audio_usbbus_read(struct snd_
34 {
35 struct snd_usb_audio *chip = entry->pr
36 if (!atomic_read(&chip->shutdown))
37 snd_iprintf(buffer, "%03d/%03d
38 }
39
40 static void proc_audio_usbid_read(struct snd_i
41 {
42 struct snd_usb_audio *chip = entry->pr
43 if (!atomic_read(&chip->shutdown))
44 snd_iprintf(buffer, "%04x:%04x
45 USB_ID_VENDOR(chip
46 USB_ID_PRODUCT(chi
47 }
48
49 void snd_usb_audio_create_proc(struct snd_usb_
50 {
51 snd_card_ro_proc_new(chip->card, "usbb
52 proc_audio_usbbus
53 snd_card_ro_proc_new(chip->card, "usbi
54 proc_audio_usbid_
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 f
91 */
92 static void proc_dump_substream_formats(struct
93 {
94 struct audioformat *fp;
95 static const char * const sync_types[4
96 "NONE", "ASYNC", "ADAPTIVE", "
97 };
98
99 list_for_each_entry(fp, &subs->fmt_lis
100 snd_pcm_format_t fmt;
101
102 snd_iprintf(buffer, " Interfa
103 snd_iprintf(buffer, " Altse
104 snd_iprintf(buffer, " Forma
105 pcm_for_each_format(fmt)
106 if (fp->formats & pcm_
107 snd_iprintf(bu
108 sn
109 snd_iprintf(buffer, "\n");
110 snd_iprintf(buffer, " Chann
111 snd_iprintf(buffer, " Endpo
112 fp->endpoint,
113 fp->endpoint & USB
114 fp->endpoint & USB
115 sync_types[(fp->ep
116 if (fp->rates & SNDRV_PCM_RATE
117 snd_iprintf(buffer, "
118 fp->rate_m
119 } else {
120 unsigned int i;
121 snd_iprintf(buffer, "
122 for (i = 0; i < fp->nr
123 if (i > 0)
124 snd_ip
125 snd_iprintf(bu
126 }
127 snd_iprintf(buffer, "\
128 }
129 if (subs->speed != USB_SPEED_F
130 snd_iprintf(buffer, "
131 125 * (1 <
132 snd_iprintf(buffer, " Bits:
133
134 if (fp->dsd_raw)
135 snd_iprintf(buffer, "
136 fp->dsd_do
137
138 if (fp->chmap) {
139 const struct snd_pcm_c
140 int c;
141
142 snd_iprintf(buffer, "
143 for (c = 0; c < map->c
144 if (map->map[c
145 !channel_l
146 snd_ip
147 else
148 snd_ip
149
150 }
151 snd_iprintf(buffer, "\
152 }
153
154 if (fp->sync_ep) {
155 snd_iprintf(buffer, "
156 fp->sync_e
157 fp->sync_e
158 fp->sync_e
159 snd_iprintf(buffer, "
160 fp->sync_i
161 snd_iprintf(buffer, "
162 fp->sync_a
163 snd_iprintf(buffer, "
164 fp->implic
165 }
166
167 // snd_iprintf(buffer, " Ma
168 // snd_iprintf(buffer, " EP
169 }
170 }
171
172 static void proc_dump_ep_status(struct snd_usb
173 struct snd_usb
174 struct snd_usb
175 struct snd_inf
176 {
177 if (!data_ep)
178 return;
179 snd_iprintf(buffer, " Packet Size =
180 snd_iprintf(buffer, " Momentary fre
181 subs->speed == USB_SPEED_F
182 ? get_full_speed_hz(data_e
183 : get_high_speed_hz(data_e
184 data_ep->freqm >> 16, data
185 if (sync_ep && data_ep->freqshift != I
186 int res = 16 - data_ep->freqsh
187 snd_iprintf(buffer, " Feedb
188 (sync_ep->syncmaxs
189 }
190 }
191
192 static void proc_dump_substream_status(struct
193 struct
194 struct
195 {
196 mutex_lock(&chip->mutex);
197 if (subs->running) {
198 snd_iprintf(buffer, " Status:
199 if (subs->cur_audiofmt) {
200 snd_iprintf(buffer, "
201 snd_iprintf(buffer, "
202 }
203 proc_dump_ep_status(subs, subs
204 } else {
205 snd_iprintf(buffer, " Status:
206 }
207 mutex_unlock(&chip->mutex);
208 }
209
210 static void proc_pcm_format_read(struct snd_in
211 {
212 struct snd_usb_stream *stream = entry-
213 struct snd_usb_audio *chip = stream->c
214
215 snd_iprintf(buffer, "%s : %s\n", chip-
216
217 if (stream->substream[SNDRV_PCM_STREAM
218 snd_iprintf(buffer, "\nPlaybac
219 proc_dump_substream_status(chi
220 proc_dump_substream_formats(&s
221 }
222 if (stream->substream[SNDRV_PCM_STREAM
223 snd_iprintf(buffer, "\nCapture
224 proc_dump_substream_status(chi
225 proc_dump_substream_formats(&s
226 }
227 }
228
229 void snd_usb_proc_pcm_format_add(struct snd_us
230 {
231 char name[32];
232 struct snd_card *card = stream->chip->
233
234 sprintf(name, "stream%d", stream->pcm_
235 snd_card_ro_proc_new(card, name, strea
236 }
237
238
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