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1 | /* |
2 | * This program is free software; you can redistribute it and/or modify |
3 | * it under the terms of the GNU General Public License as published by |
4 | * the Free Software Foundation; either version 2 of the License, or |
5 | * (at your option) any later version. |
6 | * |
7 | * This program is distributed in the hope that it will be useful, |
8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
10 | * GNU General Public License for more details. |
11 | * |
12 | * You should have received a copy of the GNU General Public License |
13 | * along with this program; if not, write to the Free Software |
14 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
15 | * |
16 | */ |
17 | |
18 | #include <linux/init.h> |
19 | #include <linux/usb.h> |
20 | |
21 | #include <sound/core.h> |
22 | #include <sound/info.h> |
23 | #include <sound/pcm.h> |
24 | |
25 | #include "usbaudio.h" |
26 | #include "helper.h" |
27 | #include "card.h" |
28 | #include "endpoint.h" |
29 | #include "proc.h" |
30 | |
31 | /* convert our full speed USB rate into sampling rate in Hz */ |
32 | static inline unsigned get_full_speed_hz(unsigned int usb_rate) |
33 | { |
34 | return (usb_rate * 125 + (1 << 12)) >> 13; |
35 | } |
36 | |
37 | /* convert our high speed USB rate into sampling rate in Hz */ |
38 | static inline unsigned get_high_speed_hz(unsigned int usb_rate) |
39 | { |
40 | return (usb_rate * 125 + (1 << 9)) >> 10; |
41 | } |
42 | |
43 | /* |
44 | * common proc files to show the usb device info |
45 | */ |
46 | static void proc_audio_usbbus_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
47 | { |
48 | struct snd_usb_audio *chip = entry->private_data; |
49 | if (!chip->shutdown) |
50 | snd_iprintf(buffer, "%03d/%03d\n", chip->dev->bus->busnum, chip->dev->devnum); |
51 | } |
52 | |
53 | static void proc_audio_usbid_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
54 | { |
55 | struct snd_usb_audio *chip = entry->private_data; |
56 | if (!chip->shutdown) |
57 | snd_iprintf(buffer, "%04x:%04x\n", |
58 | USB_ID_VENDOR(chip->usb_id), |
59 | USB_ID_PRODUCT(chip->usb_id)); |
60 | } |
61 | |
62 | void snd_usb_audio_create_proc(struct snd_usb_audio *chip) |
63 | { |
64 | struct snd_info_entry *entry; |
65 | if (!snd_card_proc_new(chip->card, "usbbus", &entry)) |
66 | snd_info_set_text_ops(entry, chip, proc_audio_usbbus_read); |
67 | if (!snd_card_proc_new(chip->card, "usbid", &entry)) |
68 | snd_info_set_text_ops(entry, chip, proc_audio_usbid_read); |
69 | } |
70 | |
71 | /* |
72 | * proc interface for list the supported pcm formats |
73 | */ |
74 | static void proc_dump_substream_formats(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
75 | { |
76 | struct audioformat *fp; |
77 | static char *sync_types[4] = { |
78 | "NONE", "ASYNC", "ADAPTIVE", "SYNC" |
79 | }; |
80 | |
81 | list_for_each_entry(fp, &subs->fmt_list, list) { |
82 | snd_pcm_format_t fmt; |
83 | |
84 | snd_iprintf(buffer, " Interface %d\n", fp->iface); |
85 | snd_iprintf(buffer, " Altset %d\n", fp->altsetting); |
86 | snd_iprintf(buffer, " Format:"); |
87 | for (fmt = 0; fmt <= SNDRV_PCM_FORMAT_LAST; ++fmt) |
88 | if (fp->formats & pcm_format_to_bits(fmt)) |
89 | snd_iprintf(buffer, " %s", |
90 | snd_pcm_format_name(fmt)); |
91 | snd_iprintf(buffer, "\n"); |
92 | snd_iprintf(buffer, " Channels: %d\n", fp->channels); |
93 | snd_iprintf(buffer, " Endpoint: %d %s (%s)\n", |
94 | fp->endpoint & USB_ENDPOINT_NUMBER_MASK, |
95 | fp->endpoint & USB_DIR_IN ? "IN" : "OUT", |
96 | sync_types[(fp->ep_attr & USB_ENDPOINT_SYNCTYPE) >> 2]); |
97 | if (fp->rates & SNDRV_PCM_RATE_CONTINUOUS) { |
98 | snd_iprintf(buffer, " Rates: %d - %d (continuous)\n", |
99 | fp->rate_min, fp->rate_max); |
100 | } else { |
101 | unsigned int i; |
102 | snd_iprintf(buffer, " Rates: "); |
103 | for (i = 0; i < fp->nr_rates; i++) { |
104 | if (i > 0) |
105 | snd_iprintf(buffer, ", "); |
106 | snd_iprintf(buffer, "%d", fp->rate_table[i]); |
107 | } |
108 | snd_iprintf(buffer, "\n"); |
109 | } |
110 | if (subs->speed != USB_SPEED_FULL) |
111 | snd_iprintf(buffer, " Data packet interval: %d us\n", |
112 | 125 * (1 << fp->datainterval)); |
113 | // snd_iprintf(buffer, " Max Packet Size = %d\n", fp->maxpacksize); |
114 | // snd_iprintf(buffer, " EP Attribute = %#x\n", fp->attributes); |
115 | } |
116 | } |
117 | |
118 | static void proc_dump_ep_status(struct snd_usb_substream *subs, |
119 | struct snd_usb_endpoint *data_ep, |
120 | struct snd_usb_endpoint *sync_ep, |
121 | struct snd_info_buffer *buffer) |
122 | { |
123 | if (!data_ep) |
124 | return; |
125 | snd_iprintf(buffer, " Packet Size = %d\n", data_ep->curpacksize); |
126 | snd_iprintf(buffer, " Momentary freq = %u Hz (%#x.%04x)\n", |
127 | subs->speed == USB_SPEED_FULL |
128 | ? get_full_speed_hz(data_ep->freqm) |
129 | : get_high_speed_hz(data_ep->freqm), |
130 | data_ep->freqm >> 16, data_ep->freqm & 0xffff); |
131 | if (sync_ep && data_ep->freqshift != INT_MIN) { |
132 | int res = 16 - data_ep->freqshift; |
133 | snd_iprintf(buffer, " Feedback Format = %d.%d\n", |
134 | (sync_ep->syncmaxsize > 3 ? 32 : 24) - res, res); |
135 | } |
136 | } |
137 | |
138 | static void proc_dump_substream_status(struct snd_usb_substream *subs, struct snd_info_buffer *buffer) |
139 | { |
140 | if (subs->running) { |
141 | snd_iprintf(buffer, " Status: Running\n"); |
142 | snd_iprintf(buffer, " Interface = %d\n", subs->interface); |
143 | snd_iprintf(buffer, " Altset = %d\n", subs->altset_idx); |
144 | proc_dump_ep_status(subs, subs->data_endpoint, subs->sync_endpoint, buffer); |
145 | } else { |
146 | snd_iprintf(buffer, " Status: Stop\n"); |
147 | } |
148 | } |
149 | |
150 | static void proc_pcm_format_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
151 | { |
152 | struct snd_usb_stream *stream = entry->private_data; |
153 | |
154 | snd_iprintf(buffer, "%s : %s\n", stream->chip->card->longname, stream->pcm->name); |
155 | |
156 | if (stream->substream[SNDRV_PCM_STREAM_PLAYBACK].num_formats) { |
157 | snd_iprintf(buffer, "\nPlayback:\n"); |
158 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); |
159 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_PLAYBACK], buffer); |
160 | } |
161 | if (stream->substream[SNDRV_PCM_STREAM_CAPTURE].num_formats) { |
162 | snd_iprintf(buffer, "\nCapture:\n"); |
163 | proc_dump_substream_status(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); |
164 | proc_dump_substream_formats(&stream->substream[SNDRV_PCM_STREAM_CAPTURE], buffer); |
165 | } |
166 | } |
167 | |
168 | void snd_usb_proc_pcm_format_add(struct snd_usb_stream *stream) |
169 | { |
170 | struct snd_info_entry *entry; |
171 | char name[32]; |
172 | struct snd_card *card = stream->chip->card; |
173 | |
174 | sprintf(name, "stream%d", stream->pcm_index); |
175 | if (!snd_card_proc_new(card, name, &entry)) |
176 | snd_info_set_text_ops(entry, stream, proc_pcm_format_read); |
177 | } |
178 | |
179 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9