diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/usb/6fire/midi.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/usb/6fire/midi.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/ANDROID_3.4.5/sound/usb/6fire/midi.c b/ANDROID_3.4.5/sound/usb/6fire/midi.c deleted file mode 100644 index f0e5179b..00000000 --- a/ANDROID_3.4.5/sound/usb/6fire/midi.c +++ /dev/null @@ -1,202 +0,0 @@ -/* - * Linux driver for TerraTec DMX 6Fire USB - * - * Rawmidi driver - * - * Author: Torsten Schenk <torsten.schenk@zoho.com> - * Created: Jan 01, 2011 - * Copyright: (C) Torsten Schenk - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <sound/rawmidi.h> - -#include "midi.h" -#include "chip.h" -#include "comm.h" - -static void usb6fire_midi_out_handler(struct urb *urb) -{ - struct midi_runtime *rt = urb->context; - int ret; - unsigned long flags; - - spin_lock_irqsave(&rt->out_lock, flags); - - if (rt->out) { - ret = snd_rawmidi_transmit(rt->out, rt->out_buffer + 4, - MIDI_BUFSIZE - 4); - if (ret > 0) { /* more data available, send next packet */ - rt->out_buffer[1] = ret + 2; - rt->out_buffer[3] = rt->out_serial++; - urb->transfer_buffer_length = ret + 4; - - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret < 0) - snd_printk(KERN_ERR PREFIX "midi out urb " - "submit failed: %d\n", ret); - } else /* no more data to transmit */ - rt->out = NULL; - } - spin_unlock_irqrestore(&rt->out_lock, flags); -} - -static void usb6fire_midi_in_received( - struct midi_runtime *rt, u8 *data, int length) -{ - unsigned long flags; - - spin_lock_irqsave(&rt->in_lock, flags); - if (rt->in) - snd_rawmidi_receive(rt->in, data, length); - spin_unlock_irqrestore(&rt->in_lock, flags); -} - -static int usb6fire_midi_out_open(struct snd_rawmidi_substream *alsa_sub) -{ - return 0; -} - -static int usb6fire_midi_out_close(struct snd_rawmidi_substream *alsa_sub) -{ - return 0; -} - -static void usb6fire_midi_out_trigger( - struct snd_rawmidi_substream *alsa_sub, int up) -{ - struct midi_runtime *rt = alsa_sub->rmidi->private_data; - struct urb *urb = &rt->out_urb; - __s8 ret; - unsigned long flags; - - spin_lock_irqsave(&rt->out_lock, flags); - if (up) { /* start transfer */ - if (rt->out) { /* we are already transmitting so just return */ - spin_unlock_irqrestore(&rt->out_lock, flags); - return; - } - - ret = snd_rawmidi_transmit(alsa_sub, rt->out_buffer + 4, - MIDI_BUFSIZE - 4); - if (ret > 0) { - rt->out_buffer[1] = ret + 2; - rt->out_buffer[3] = rt->out_serial++; - urb->transfer_buffer_length = ret + 4; - - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret < 0) - snd_printk(KERN_ERR PREFIX "midi out urb " - "submit failed: %d\n", ret); - else - rt->out = alsa_sub; - } - } else if (rt->out == alsa_sub) - rt->out = NULL; - spin_unlock_irqrestore(&rt->out_lock, flags); -} - -static void usb6fire_midi_out_drain(struct snd_rawmidi_substream *alsa_sub) -{ - struct midi_runtime *rt = alsa_sub->rmidi->private_data; - int retry = 0; - - while (rt->out && retry++ < 100) - msleep(10); -} - -static int usb6fire_midi_in_open(struct snd_rawmidi_substream *alsa_sub) -{ - return 0; -} - -static int usb6fire_midi_in_close(struct snd_rawmidi_substream *alsa_sub) -{ - return 0; -} - -static void usb6fire_midi_in_trigger( - struct snd_rawmidi_substream *alsa_sub, int up) -{ - struct midi_runtime *rt = alsa_sub->rmidi->private_data; - unsigned long flags; - - spin_lock_irqsave(&rt->in_lock, flags); - if (up) - rt->in = alsa_sub; - else - rt->in = NULL; - spin_unlock_irqrestore(&rt->in_lock, flags); -} - -static struct snd_rawmidi_ops out_ops = { - .open = usb6fire_midi_out_open, - .close = usb6fire_midi_out_close, - .trigger = usb6fire_midi_out_trigger, - .drain = usb6fire_midi_out_drain -}; - -static struct snd_rawmidi_ops in_ops = { - .open = usb6fire_midi_in_open, - .close = usb6fire_midi_in_close, - .trigger = usb6fire_midi_in_trigger -}; - -int __devinit usb6fire_midi_init(struct sfire_chip *chip) -{ - int ret; - struct midi_runtime *rt = kzalloc(sizeof(struct midi_runtime), - GFP_KERNEL); - struct comm_runtime *comm_rt = chip->comm; - - if (!rt) - return -ENOMEM; - - rt->chip = chip; - rt->in_received = usb6fire_midi_in_received; - rt->out_buffer[0] = 0x80; /* 'send midi' command */ - rt->out_buffer[1] = 0x00; /* size of data */ - rt->out_buffer[2] = 0x00; /* always 0 */ - spin_lock_init(&rt->in_lock); - spin_lock_init(&rt->out_lock); - - comm_rt->init_urb(comm_rt, &rt->out_urb, rt->out_buffer, rt, - usb6fire_midi_out_handler); - - ret = snd_rawmidi_new(chip->card, "6FireUSB", 0, 1, 1, &rt->instance); - if (ret < 0) { - kfree(rt); - snd_printk(KERN_ERR PREFIX "unable to create midi.\n"); - return ret; - } - rt->instance->private_data = rt; - strcpy(rt->instance->name, "DMX6FireUSB MIDI"); - rt->instance->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT | - SNDRV_RAWMIDI_INFO_INPUT | - SNDRV_RAWMIDI_INFO_DUPLEX; - snd_rawmidi_set_ops(rt->instance, SNDRV_RAWMIDI_STREAM_OUTPUT, - &out_ops); - snd_rawmidi_set_ops(rt->instance, SNDRV_RAWMIDI_STREAM_INPUT, - &in_ops); - - chip->midi = rt; - return 0; -} - -void usb6fire_midi_abort(struct sfire_chip *chip) -{ - struct midi_runtime *rt = chip->midi; - - if (rt) - usb_poison_urb(&rt->out_urb); -} - -void usb6fire_midi_destroy(struct sfire_chip *chip) -{ - kfree(chip->midi); - chip->midi = NULL; -} |