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/usb.h>
20 #include <sound/rawmidi.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
27 static int snd_usb_caiaq_midi_input_open(struct snd_rawmidi_substream *substream)
32 static int snd_usb_caiaq_midi_input_close(struct snd_rawmidi_substream *substream)
37 static void snd_usb_caiaq_midi_input_trigger(struct snd_rawmidi_substream *substream, int up)
39 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
44 dev->midi_receive_substream = up ? substream : NULL;
48 static int snd_usb_caiaq_midi_output_open(struct snd_rawmidi_substream *substream)
53 static int snd_usb_caiaq_midi_output_close(struct snd_rawmidi_substream *substream)
55 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
56 if (dev->midi_out_active) {
57 usb_kill_urb(&dev->midi_out_urb);
58 dev->midi_out_active = 0;
63 static void snd_usb_caiaq_midi_send(struct snd_usb_caiaqdev *dev,
64 struct snd_rawmidi_substream *substream)
68 dev->midi_out_buf[0] = EP1_CMD_MIDI_WRITE;
69 dev->midi_out_buf[1] = 0; /* port */
70 len = snd_rawmidi_transmit(substream, dev->midi_out_buf + 3,
76 dev->midi_out_buf[2] = len;
77 dev->midi_out_urb.transfer_buffer_length = len+3;
79 ret = usb_submit_urb(&dev->midi_out_urb, GFP_ATOMIC);
81 log("snd_usb_caiaq_midi_send(%p): usb_submit_urb() failed,"
85 dev->midi_out_active = 1;
88 static void snd_usb_caiaq_midi_output_trigger(struct snd_rawmidi_substream *substream, int up)
90 struct snd_usb_caiaqdev *dev = substream->rmidi->private_data;
93 dev->midi_out_substream = substream;
94 if (!dev->midi_out_active)
95 snd_usb_caiaq_midi_send(dev, substream);
97 dev->midi_out_substream = NULL;
102 static struct snd_rawmidi_ops snd_usb_caiaq_midi_output =
104 .open = snd_usb_caiaq_midi_output_open,
105 .close = snd_usb_caiaq_midi_output_close,
106 .trigger = snd_usb_caiaq_midi_output_trigger,
109 static struct snd_rawmidi_ops snd_usb_caiaq_midi_input =
111 .open = snd_usb_caiaq_midi_input_open,
112 .close = snd_usb_caiaq_midi_input_close,
113 .trigger = snd_usb_caiaq_midi_input_trigger,
116 void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev,
117 int port, const char *buf, int len)
119 if (!dev->midi_receive_substream)
122 snd_rawmidi_receive(dev->midi_receive_substream, buf, len);
125 int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *device)
128 struct snd_rawmidi *rmidi;
130 ret = snd_rawmidi_new(device->chip.card, device->product_name, 0,
131 device->spec.num_midi_out,
132 device->spec.num_midi_in,
138 strcpy(rmidi->name, device->product_name);
140 rmidi->info_flags = SNDRV_RAWMIDI_INFO_DUPLEX;
141 rmidi->private_data = device;
143 if (device->spec.num_midi_out > 0) {
144 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT;
145 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
146 &snd_usb_caiaq_midi_output);
149 if (device->spec.num_midi_in > 0) {
150 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_INPUT;
151 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
152 &snd_usb_caiaq_midi_input);
155 device->rmidi = rmidi;
160 void snd_usb_caiaq_midi_output_done(struct urb* urb)
162 struct snd_usb_caiaqdev *dev = urb->context;
164 dev->midi_out_active = 0;
165 if (urb->status != 0)
168 if (!dev->midi_out_substream)
171 snd_usb_caiaq_midi_send(dev, dev->midi_out_substream);