2 * Copyright (c) 2006,2007 Daniel Mack
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.
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.
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
19 #include <linux/init.h>
20 #include <linux/module.h>
21 #include <linux/moduleparam.h>
22 #include <linux/interrupt.h>
23 #include <linux/usb.h>
24 #include <linux/input.h>
25 #include <linux/spinlock.h>
26 #include <sound/core.h>
27 #include <sound/rawmidi.h>
28 #include <sound/pcm.h>
30 #include "caiaq-device.h"
31 #include "caiaq-midi.h"
34 static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
39 static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
44 static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
46 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
51 dev->midi_receive_substream = up ? substream : NULL;
55 static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
60 static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
62 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
63 if (dev->midi_out_active) {
64 usb_kill_urb(&dev->midi_out_urb);
65 dev->midi_out_active = 0;
70 static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
71 struct snd_rawmidi_substream *substream)
75 dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
76 dev->midi_out_buf[1] = 0; /* port */
77 len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3,
83 dev->midi_out_buf[2] = len;
84 dev->midi_out_urb.transfer_buffer_length = len+3;
86 ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
88 log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
92 dev->midi_out_active = 1;
95 static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
97 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
100 dev->midi_out_substream = substream;
101 if (!dev->midi_out_active)
102 snd_usb_caiaq_midi_send(dev, substream);
104 dev->midi_out_substream = NULL;
109 static struct snd_rawmidi_ops snd_usb_caiaq_midi_output =
111 .open = snd_usb_caiaq_midi_output_open,
112 .close = snd_usb_caiaq_midi_output_close,
113 .trigger = snd_usb_caiaq_midi_output_trigger,
116 static struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
118 .open = snd_usb_caiaq_midi_input_open,
119 .close = snd_usb_caiaq_midi_input_close,
120 .trigger = snd_usb_caiaq_midi_input_trigger,
123 void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev,
124 int port, const char *buf, int len)
126 if (!dev->midi_receive_substream)
129 snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
132 int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
135 struct snd_rawmidi *rmidi;
137 ret = snd_rawmidi_new(device->chip.card, device->product_name, 0,
138 device->spec.num_midi_out,
139 device->spec.num_midi_in,
145 strcpy(rmidi->name, device->product_name);
147 rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX;
148 rmidi->private_data = device;
150 if (device->spec.num_midi_out > 0) {
151 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
152 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
153 &snd_usb_caiaq_midi_output);
156 if (device->spec.num_midi_in > 0) {
157 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
158 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
159 &snd_usb_caiaq_midi_input);
162 device->rmidi = rmidi;
167 void snd_usb_caiaq_midi_output_done(struct urb* urb)
169 struct snd_usb_caiaqdev *dev = urb->context;
171 dev->midi_out_active = 0;
172 if (urb->status != 0)
175 if (!dev->midi_out_substream)
178 snd_usb_caiaq_midi_send(dev, dev->midi_out_substream);