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Daniel Mack523f1dc2007-03-26 19:11:24 +02001/*
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
Daniel Mack523f1dc2007-03-26 19:11:24 +020019#include <linux/usb.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/gfp.h>
Daniel Mack523f1dc2007-03-26 19:11:24 +020021#include <sound/rawmidi.h>
Daniel Macke431cf42009-03-28 21:19:49 +010022#include <sound/core.h>
Daniel Mack523f1dc2007-03-26 19:11:24 +020023#include <sound/pcm.h>
24
Daniel Mack936e7d02009-04-01 19:05:39 +020025#include "device.h"
26#include "midi.h"
Daniel Mack523f1dc2007-03-26 19:11:24 +020027
Daniel Mack523f1dc2007-03-26 19:11:24 +020028static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
29{
30 return 0;
31}
32
33static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
34{
35 return 0;
36}
37
38static 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;
Daniel Mack9318dce2009-06-01 21:36:23 +020044
Daniel Mack523f1dc2007-03-26 19:11:24 +020045 dev->midi_receive_substream = up ? substream : NULL;
46}
47
48
49static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
50{
51 return 0;
52}
53
54static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
55{
Takashi Iwaif3f80a92009-01-08 15:32:56 +010056 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 }
Daniel Mack523f1dc2007-03-26 19:11:24 +020061 return 0;
62}
63
64static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
65 struct snd_rawmidi_substream *substream)
66{
67 int len, ret;
Daniel Mack9318dce2009-06-01 21:36:23 +020068
Daniel Mack523f1dc2007-03-26 19:11:24 +020069 dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
70 dev->midi_out_buf[1] = 0; /* port */
Takashi Iwaif3f80a92009-01-08 15:32:56 +010071 len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3,
72 EP1_BUFSIZE - 3);
Daniel Mack9318dce2009-06-01 21:36:23 +020073
Daniel Mack523f1dc2007-03-26 19:11:24 +020074 if (len <= 0)
75 return;
Daniel Mack9318dce2009-06-01 21:36:23 +020076
Daniel Mack523f1dc2007-03-26 19:11:24 +020077 dev->midi_out_buf[2] = len;
78 dev->midi_out_urb.transfer_buffer_length = len+3;
Daniel Mack9318dce2009-06-01 21:36:23 +020079
Daniel Mack523f1dc2007-03-26 19:11:24 +020080 ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
81 if (ret < 0)
Takashi Iwaif3f80a92009-01-08 15:32:56 +010082 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;
Daniel Mack523f1dc2007-03-26 19:11:24 +020087}
88
89static 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;
Daniel Mack9318dce2009-06-01 21:36:23 +020092
Takashi Iwaif3f80a92009-01-08 15:32:56 +010093 if (up) {
94 dev->midi_out_substream = substream;
95 if (!dev->midi_out_active)
96 snd_usb_caiaq_midi_send(dev, substream);
97 } else {
Daniel Mack523f1dc2007-03-26 19:11:24 +020098 dev->midi_out_substream = NULL;
Daniel Mack523f1dc2007-03-26 19:11:24 +020099 }
Daniel Mack523f1dc2007-03-26 19:11:24 +0200100}
101
102
103static 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
110static 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
Daniel Mack9318dce2009-06-01 21:36:23 +0200117void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev,
Daniel Mack523f1dc2007-03-26 19:11:24 +0200118 int port, const char *buf, int len)
119{
120 if (!dev->midi_receive_substream)
121 return;
Daniel Mack9318dce2009-06-01 21:36:23 +0200122
Daniel Mack523f1dc2007-03-26 19:11:24 +0200123 snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
124}
125
Randy Dunlap599c3e72008-01-16 14:56:04 +0100126int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
Daniel Mack523f1dc2007-03-26 19:11:24 +0200127{
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
Takashi Iwaieaae55d2011-02-14 22:45:59 +0100139 strlcpy(rmidi->name, device->product_name, sizeof(rmidi->name));
Daniel Mack523f1dc2007-03-26 19:11:24 +0200140
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;
Daniel Mack9318dce2009-06-01 21:36:23 +0200146 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
Daniel Mack523f1dc2007-03-26 19:11:24 +0200147 &snd_usb_caiaq_midi_output);
148 }
149
150 if (device->spec.num_midi_in > 0) {
151 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
Daniel Mack9318dce2009-06-01 21:36:23 +0200152 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
Daniel Mack523f1dc2007-03-26 19:11:24 +0200153 &snd_usb_caiaq_midi_input);
154 }
Daniel Mack9318dce2009-06-01 21:36:23 +0200155
Daniel Mack523f1dc2007-03-26 19:11:24 +0200156 device->rmidi = rmidi;
157
158 return 0;
159}
160
161void snd_usb_caiaq_midi_output_done(struct urb* urb)
162{
163 struct snd_usb_caiaqdev *dev = urb->context;
Daniel Mack9318dce2009-06-01 21:36:23 +0200164
Takashi Iwaif3f80a92009-01-08 15:32:56 +0100165 dev->midi_out_active = 0;
Daniel Mack523f1dc2007-03-26 19:11:24 +0200166 if (urb->status != 0)
167 return;
168
169 if (!dev->midi_out_substream)
170 return;
171
Daniel Mack523f1dc2007-03-26 19:11:24 +0200172 snd_usb_caiaq_midi_send(dev, dev->midi_out_substream);
173}
174