Commit | Line | Data |
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523f1dce DM |
1 | /* |
2 | * Copyright (c) 2006,2007 Daniel Mack | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | ||
523f1dce | 19 | #include <linux/usb.h> |
5a0e3ad6 | 20 | #include <linux/gfp.h> |
523f1dce | 21 | #include <sound/rawmidi.h> |
e431cf45 | 22 | #include <sound/core.h> |
523f1dce DM |
23 | #include <sound/pcm.h> |
24 | ||
936e7d03 DM |
25 | #include "device.h" |
26 | #include "midi.h" | |
523f1dce | 27 | |
523f1dce DM |
28 | static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream) |
29 | { | |
30 | return 0; | |
31 | } | |
32 | ||
33 | static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream) | |
34 | { | |
35 | return 0; | |
36 | } | |
37 | ||
38 | static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) | |
39 | { | |
40 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; | |
41 | ||
42 | if (!dev) | |
43 | return; | |
9318dce5 | 44 | |
523f1dce DM |
45 | dev->midi_receive_substream = up ? substream : NULL; |
46 | } | |
47 | ||
48 | ||
49 | static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream) | |
50 | { | |
51 | return 0; | |
52 | } | |
53 | ||
54 | static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream) | |
55 | { | |
f3f80a92 TI |
56 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; |
57 | if (dev->midi_out_active) { | |
58 | usb_kill_urb(&dev->midi_out_urb); | |
59 | dev->midi_out_active = 0; | |
60 | } | |
523f1dce DM |
61 | return 0; |
62 | } | |
63 | ||
64 | static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev, | |
65 | struct snd_rawmidi_substream *substream) | |
66 | { | |
67 | int len, ret; | |
9318dce5 | 68 | |
523f1dce DM |
69 | dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE; |
70 | dev->midi_out_buf[1] = 0; /* port */ | |
f3f80a92 TI |
71 | len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3, |
72 | EP1_BUFSIZE - 3); | |
9318dce5 | 73 | |
523f1dce DM |
74 | if (len <= 0) |
75 | return; | |
9318dce5 | 76 | |
523f1dce DM |
77 | dev->midi_out_buf[2] = len; |
78 | dev->midi_out_urb.transfer_buffer_length = len+3; | |
9318dce5 | 79 | |
523f1dce DM |
80 | ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC); |
81 | if (ret < 0) | |
f3f80a92 TI |
82 | log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed," |
83 | "ret=%d, len=%d\n", | |
84 | substream, ret, len); | |
85 | else | |
86 | dev->midi_out_active = 1; | |
523f1dce DM |
87 | } |
88 | ||
89 | static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) | |
90 | { | |
91 | struct snd_usb_caiaqdev *dev = substream->rmidi->private_data; | |
9318dce5 | 92 | |
f3f80a92 TI |
93 | if (up) { |
94 | dev->midi_out_substream = substream; | |
95 | if (!dev->midi_out_active) | |
96 | snd_usb_caiaq_midi_send(dev, substream); | |
97 | } else { | |
523f1dce | 98 | dev->midi_out_substream = NULL; |
523f1dce | 99 | } |
523f1dce DM |
100 | } |
101 | ||
102 | ||
103 | static struct snd_rawmidi_ops snd_usb_caiaq_midi_output = | |
104 | { | |
105 | .open = snd_usb_caiaq_midi_output_open, | |
106 | .close = snd_usb_caiaq_midi_output_close, | |
107 | .trigger = snd_usb_caiaq_midi_output_trigger, | |
108 | }; | |
109 | ||
110 | static struct snd_rawmidi_ops snd_usb_caiaq_midi_input = | |
111 | { | |
112 | .open = snd_usb_caiaq_midi_input_open, | |
113 | .close = snd_usb_caiaq_midi_input_close, | |
114 | .trigger = snd_usb_caiaq_midi_input_trigger, | |
115 | }; | |
116 | ||
9318dce5 | 117 | void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev, |
523f1dce DM |
118 | int port, const char *buf, int len) |
119 | { | |
120 | if (!dev->midi_receive_substream) | |
121 | return; | |
9318dce5 | 122 | |
523f1dce DM |
123 | snd_rawmidi_receive(dev->midi_receive_substream, buf, len); |
124 | } | |
125 | ||
599c3e76 | 126 | int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device) |
523f1dce DM |
127 | { |
128 | int ret; | |
129 | struct snd_rawmidi *rmidi; | |
130 | ||
131 | ret = snd_rawmidi_new(device->chip.card, device->product_name, 0, | |
132 | device->spec.num_midi_out, | |
133 | device->spec.num_midi_in, | |
134 | &rmidi); | |
135 | ||
136 | if (ret < 0) | |
137 | return ret; | |
138 | ||
139 | strcpy(rmidi->name, device->product_name); | |
140 | ||
141 | rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX; | |
142 | rmidi->private_data = device; | |
143 | ||
144 | if (device->spec.num_midi_out > 0) { | |
145 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT; | |
9318dce5 | 146 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, |
523f1dce DM |
147 | &snd_usb_caiaq_midi_output); |
148 | } | |
149 | ||
150 | if (device->spec.num_midi_in > 0) { | |
151 | rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT; | |
9318dce5 | 152 | snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, |
523f1dce DM |
153 | &snd_usb_caiaq_midi_input); |
154 | } | |
9318dce5 | 155 | |
523f1dce DM |
156 | device->rmidi = rmidi; |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
161 | void snd_usb_caiaq_midi_output_done(struct urb* urb) | |
162 | { | |
163 | struct snd_usb_caiaqdev *dev = urb->context; | |
9318dce5 | 164 | |
f3f80a92 | 165 | dev->midi_out_active = 0; |
523f1dce DM |
166 | if (urb->status != 0) |
167 | return; | |
168 | ||
169 | if (!dev->midi_out_substream) | |
170 | return; | |
171 | ||
523f1dce DM |
172 | snd_usb_caiaq_midi_send(dev, dev->midi_out_substream); |
173 | } | |
174 |