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![Takashi Iwai](/assets/img/avatar_default.png)
For discarding the pending bytes on rawmidi, we process with a loop of snd_rawmidi_transmit() which is just a waste of CPU power. Implement a lightweight API function to discard the pending bytes and the proceed the ring buffer instantly, and use it instead of open codes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2491 lines
69 KiB
C
2491 lines
69 KiB
C
/*
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* usbmidi.c - ALSA USB MIDI driver
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*
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* Copyright (c) 2002-2009 Clemens Ladisch
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* All rights reserved.
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*
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* Based on the OSS usb-midi driver by NAGANO Daisuke,
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* NetBSD's umidi driver by Takuya SHIOZAKI,
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* the "USB Device Class Definition for MIDI Devices" by Roland
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed and/or modified under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option) any later
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* version.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/bitops.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/timer.h>
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#include <linux/usb.h>
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#include <linux/wait.h>
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#include <linux/usb/audio.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#include <sound/rawmidi.h>
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#include <sound/asequencer.h>
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#include "usbaudio.h"
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#include "midi.h"
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#include "power.h"
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#include "helper.h"
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/*
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* define this to log all USB packets
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*/
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/* #define DUMP_PACKETS */
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/*
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* how long to wait after some USB errors, so that hub_wq can disconnect() us
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* without too many spurious errors
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*/
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#define ERROR_DELAY_JIFFIES (HZ / 10)
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#define OUTPUT_URBS 7
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#define INPUT_URBS 7
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MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
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MODULE_DESCRIPTION("USB Audio/MIDI helper module");
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MODULE_LICENSE("Dual BSD/GPL");
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struct usb_ms_header_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u8 bcdMSC[2];
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__le16 wTotalLength;
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} __attribute__ ((packed));
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struct usb_ms_endpoint_descriptor {
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__u8 bLength;
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__u8 bDescriptorType;
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__u8 bDescriptorSubtype;
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__u8 bNumEmbMIDIJack;
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__u8 baAssocJackID[0];
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} __attribute__ ((packed));
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struct snd_usb_midi_in_endpoint;
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struct snd_usb_midi_out_endpoint;
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struct snd_usb_midi_endpoint;
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struct usb_protocol_ops {
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void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
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void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb);
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void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
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void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint *);
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void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint *);
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};
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struct snd_usb_midi {
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struct usb_device *dev;
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struct snd_card *card;
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struct usb_interface *iface;
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const struct snd_usb_audio_quirk *quirk;
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struct snd_rawmidi *rmidi;
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const struct usb_protocol_ops *usb_protocol_ops;
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struct list_head list;
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struct timer_list error_timer;
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spinlock_t disc_lock;
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struct rw_semaphore disc_rwsem;
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struct mutex mutex;
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u32 usb_id;
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int next_midi_device;
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struct snd_usb_midi_endpoint {
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struct snd_usb_midi_out_endpoint *out;
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struct snd_usb_midi_in_endpoint *in;
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} endpoints[MIDI_MAX_ENDPOINTS];
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unsigned long input_triggered;
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unsigned int opened[2];
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unsigned char disconnected;
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unsigned char input_running;
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struct snd_kcontrol *roland_load_ctl;
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};
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struct snd_usb_midi_out_endpoint {
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struct snd_usb_midi *umidi;
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struct out_urb_context {
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struct urb *urb;
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struct snd_usb_midi_out_endpoint *ep;
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} urbs[OUTPUT_URBS];
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unsigned int active_urbs;
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unsigned int drain_urbs;
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int max_transfer; /* size of urb buffer */
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struct tasklet_struct tasklet;
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unsigned int next_urb;
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spinlock_t buffer_lock;
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struct usbmidi_out_port {
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struct snd_usb_midi_out_endpoint *ep;
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struct snd_rawmidi_substream *substream;
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int active;
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uint8_t cable; /* cable number << 4 */
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uint8_t state;
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#define STATE_UNKNOWN 0
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#define STATE_1PARAM 1
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#define STATE_2PARAM_1 2
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#define STATE_2PARAM_2 3
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#define STATE_SYSEX_0 4
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#define STATE_SYSEX_1 5
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#define STATE_SYSEX_2 6
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uint8_t data[2];
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} ports[0x10];
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int current_port;
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wait_queue_head_t drain_wait;
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};
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struct snd_usb_midi_in_endpoint {
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struct snd_usb_midi *umidi;
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struct urb *urbs[INPUT_URBS];
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struct usbmidi_in_port {
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struct snd_rawmidi_substream *substream;
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u8 running_status_length;
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} ports[0x10];
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u8 seen_f5;
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bool in_sysex;
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u8 last_cin;
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u8 error_resubmit;
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int current_port;
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};
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static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint *ep);
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static const uint8_t snd_usbmidi_cin_length[] = {
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0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
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};
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/*
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* Submits the URB, with error handling.
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*/
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static int snd_usbmidi_submit_urb(struct urb *urb, gfp_t flags)
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{
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int err = usb_submit_urb(urb, flags);
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if (err < 0 && err != -ENODEV)
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dev_err(&urb->dev->dev, "usb_submit_urb: %d\n", err);
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return err;
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}
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/*
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* Error handling for URB completion functions.
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*/
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static int snd_usbmidi_urb_error(const struct urb *urb)
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{
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switch (urb->status) {
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/* manually unlinked, or device gone */
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case -ENOENT:
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case -ECONNRESET:
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case -ESHUTDOWN:
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case -ENODEV:
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return -ENODEV;
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/* errors that might occur during unplugging */
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case -EPROTO:
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case -ETIME:
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case -EILSEQ:
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return -EIO;
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default:
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dev_err(&urb->dev->dev, "urb status %d\n", urb->status);
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return 0; /* continue */
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}
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}
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/*
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* Receives a chunk of MIDI data.
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*/
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static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint *ep,
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int portidx, uint8_t *data, int length)
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{
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struct usbmidi_in_port *port = &ep->ports[portidx];
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if (!port->substream) {
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dev_dbg(&ep->umidi->dev->dev, "unexpected port %d!\n", portidx);
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return;
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}
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if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
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return;
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snd_rawmidi_receive(port->substream, data, length);
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}
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#ifdef DUMP_PACKETS
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static void dump_urb(const char *type, const u8 *data, int length)
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{
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snd_printk(KERN_DEBUG "%s packet: [", type);
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for (; length > 0; ++data, --length)
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printk(KERN_CONT " %02x", *data);
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printk(KERN_CONT " ]\n");
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}
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#else
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#define dump_urb(type, data, length) /* nothing */
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#endif
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/*
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* Processes the data read from the device.
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*/
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static void snd_usbmidi_in_urb_complete(struct urb *urb)
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{
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struct snd_usb_midi_in_endpoint *ep = urb->context;
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if (urb->status == 0) {
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dump_urb("received", urb->transfer_buffer, urb->actual_length);
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ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
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urb->actual_length);
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} else {
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int err = snd_usbmidi_urb_error(urb);
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if (err < 0) {
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if (err != -ENODEV) {
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ep->error_resubmit = 1;
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mod_timer(&ep->umidi->error_timer,
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jiffies + ERROR_DELAY_JIFFIES);
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}
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return;
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}
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}
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urb->dev = ep->umidi->dev;
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snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
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}
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static void snd_usbmidi_out_urb_complete(struct urb *urb)
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{
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struct out_urb_context *context = urb->context;
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struct snd_usb_midi_out_endpoint *ep = context->ep;
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unsigned int urb_index;
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unsigned long flags;
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spin_lock_irqsave(&ep->buffer_lock, flags);
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urb_index = context - ep->urbs;
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ep->active_urbs &= ~(1 << urb_index);
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if (unlikely(ep->drain_urbs)) {
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ep->drain_urbs &= ~(1 << urb_index);
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wake_up(&ep->drain_wait);
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}
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spin_unlock_irqrestore(&ep->buffer_lock, flags);
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if (urb->status < 0) {
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int err = snd_usbmidi_urb_error(urb);
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if (err < 0) {
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if (err != -ENODEV)
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mod_timer(&ep->umidi->error_timer,
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jiffies + ERROR_DELAY_JIFFIES);
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return;
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}
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}
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snd_usbmidi_do_output(ep);
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}
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/*
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* This is called when some data should be transferred to the device
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* (from one or more substreams).
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*/
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static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint *ep)
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{
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unsigned int urb_index;
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struct urb *urb;
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unsigned long flags;
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spin_lock_irqsave(&ep->buffer_lock, flags);
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if (ep->umidi->disconnected) {
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spin_unlock_irqrestore(&ep->buffer_lock, flags);
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return;
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}
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urb_index = ep->next_urb;
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for (;;) {
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if (!(ep->active_urbs & (1 << urb_index))) {
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urb = ep->urbs[urb_index].urb;
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urb->transfer_buffer_length = 0;
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ep->umidi->usb_protocol_ops->output(ep, urb);
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if (urb->transfer_buffer_length == 0)
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break;
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dump_urb("sending", urb->transfer_buffer,
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urb->transfer_buffer_length);
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urb->dev = ep->umidi->dev;
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if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0)
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break;
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ep->active_urbs |= 1 << urb_index;
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}
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if (++urb_index >= OUTPUT_URBS)
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urb_index = 0;
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if (urb_index == ep->next_urb)
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break;
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}
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ep->next_urb = urb_index;
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spin_unlock_irqrestore(&ep->buffer_lock, flags);
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}
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static void snd_usbmidi_out_tasklet(unsigned long data)
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{
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struct snd_usb_midi_out_endpoint *ep =
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(struct snd_usb_midi_out_endpoint *) data;
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snd_usbmidi_do_output(ep);
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}
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/* called after transfers had been interrupted due to some USB error */
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static void snd_usbmidi_error_timer(struct timer_list *t)
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{
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struct snd_usb_midi *umidi = from_timer(umidi, t, error_timer);
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unsigned int i, j;
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spin_lock(&umidi->disc_lock);
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if (umidi->disconnected) {
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spin_unlock(&umidi->disc_lock);
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return;
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}
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for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
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struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
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if (in && in->error_resubmit) {
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in->error_resubmit = 0;
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for (j = 0; j < INPUT_URBS; ++j) {
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if (atomic_read(&in->urbs[j]->use_count))
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continue;
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in->urbs[j]->dev = umidi->dev;
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snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC);
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}
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}
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if (umidi->endpoints[i].out)
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snd_usbmidi_do_output(umidi->endpoints[i].out);
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}
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spin_unlock(&umidi->disc_lock);
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}
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/* helper function to send static data that may not DMA-able */
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static int send_bulk_static_data(struct snd_usb_midi_out_endpoint *ep,
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const void *data, int len)
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{
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int err = 0;
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void *buf = kmemdup(data, len, GFP_KERNEL);
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if (!buf)
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return -ENOMEM;
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dump_urb("sending", buf, len);
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if (ep->urbs[0].urb)
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err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe,
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buf, len, NULL, 250);
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kfree(buf);
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return err;
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}
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/*
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* Standard USB MIDI protocol: see the spec.
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* Midiman protocol: like the standard protocol, but the control byte is the
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* fourth byte in each packet, and uses length instead of CIN.
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*/
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static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint *ep,
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uint8_t *buffer, int buffer_length)
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{
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int i;
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for (i = 0; i + 3 < buffer_length; i += 4)
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if (buffer[i] != 0) {
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int cable = buffer[i] >> 4;
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int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
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snd_usbmidi_input_data(ep, cable, &buffer[i + 1],
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length);
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}
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}
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static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint *ep,
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uint8_t *buffer, int buffer_length)
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{
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int i;
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for (i = 0; i + 3 < buffer_length; i += 4)
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if (buffer[i + 3] != 0) {
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int port = buffer[i + 3] >> 4;
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int length = buffer[i + 3] & 3;
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snd_usbmidi_input_data(ep, port, &buffer[i], length);
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}
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}
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/*
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* Buggy M-Audio device: running status on input results in a packet that has
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* the data bytes but not the status byte and that is marked with CIN 4.
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*/
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static void snd_usbmidi_maudio_broken_running_status_input(
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struct snd_usb_midi_in_endpoint *ep,
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uint8_t *buffer, int buffer_length)
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{
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int i;
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for (i = 0; i + 3 < buffer_length; i += 4)
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if (buffer[i] != 0) {
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int cable = buffer[i] >> 4;
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u8 cin = buffer[i] & 0x0f;
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struct usbmidi_in_port *port = &ep->ports[cable];
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int length;
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length = snd_usbmidi_cin_length[cin];
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if (cin == 0xf && buffer[i + 1] >= 0xf8)
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; /* realtime msg: no running status change */
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else if (cin >= 0x8 && cin <= 0xe)
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/* channel msg */
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port->running_status_length = length - 1;
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else if (cin == 0x4 &&
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port->running_status_length != 0 &&
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buffer[i + 1] < 0x80)
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/* CIN 4 that is not a SysEx */
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length = port->running_status_length;
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else
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/*
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* All other msgs cannot begin running status.
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* (A channel msg sent as two or three CIN 0xF
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* packets could in theory, but this device
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* doesn't use this format.)
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*/
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port->running_status_length = 0;
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snd_usbmidi_input_data(ep, cable, &buffer[i + 1],
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length);
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}
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}
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|
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/*
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* QinHeng CH345 is buggy: every second packet inside a SysEx has not CIN 4
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* but the previously seen CIN, but still with three data bytes.
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*/
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static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep,
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uint8_t *buffer, int buffer_length)
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{
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unsigned int i, cin, length;
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for (i = 0; i + 3 < buffer_length; i += 4) {
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if (buffer[i] == 0 && i > 0)
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break;
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cin = buffer[i] & 0x0f;
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if (ep->in_sysex &&
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cin == ep->last_cin &&
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(buffer[i + 1 + (cin == 0x6)] & 0x80) == 0)
|
|
cin = 0x4;
|
|
#if 0
|
|
if (buffer[i + 1] == 0x90) {
|
|
/*
|
|
* Either a corrupted running status or a real note-on
|
|
* message; impossible to detect reliably.
|
|
*/
|
|
}
|
|
#endif
|
|
length = snd_usbmidi_cin_length[cin];
|
|
snd_usbmidi_input_data(ep, 0, &buffer[i + 1], length);
|
|
ep->in_sysex = cin == 0x4;
|
|
if (!ep->in_sysex)
|
|
ep->last_cin = cin;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* CME protocol: like the standard protocol, but SysEx commands are sent as a
|
|
* single USB packet preceded by a 0x0F byte.
|
|
*/
|
|
static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
|
|
snd_usbmidi_standard_input(ep, buffer, buffer_length);
|
|
else
|
|
snd_usbmidi_input_data(ep, buffer[0] >> 4,
|
|
&buffer[1], buffer_length - 1);
|
|
}
|
|
|
|
/*
|
|
* Adds one USB MIDI packet to the output buffer.
|
|
*/
|
|
static void snd_usbmidi_output_standard_packet(struct urb *urb, uint8_t p0,
|
|
uint8_t p1, uint8_t p2,
|
|
uint8_t p3)
|
|
{
|
|
|
|
uint8_t *buf =
|
|
(uint8_t *)urb->transfer_buffer + urb->transfer_buffer_length;
|
|
buf[0] = p0;
|
|
buf[1] = p1;
|
|
buf[2] = p2;
|
|
buf[3] = p3;
|
|
urb->transfer_buffer_length += 4;
|
|
}
|
|
|
|
/*
|
|
* Adds one Midiman packet to the output buffer.
|
|
*/
|
|
static void snd_usbmidi_output_midiman_packet(struct urb *urb, uint8_t p0,
|
|
uint8_t p1, uint8_t p2,
|
|
uint8_t p3)
|
|
{
|
|
|
|
uint8_t *buf =
|
|
(uint8_t *)urb->transfer_buffer + urb->transfer_buffer_length;
|
|
buf[0] = p1;
|
|
buf[1] = p2;
|
|
buf[2] = p3;
|
|
buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
|
|
urb->transfer_buffer_length += 4;
|
|
}
|
|
|
|
/*
|
|
* Converts MIDI commands to USB MIDI packets.
|
|
*/
|
|
static void snd_usbmidi_transmit_byte(struct usbmidi_out_port *port,
|
|
uint8_t b, struct urb *urb)
|
|
{
|
|
uint8_t p0 = port->cable;
|
|
void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
|
|
port->ep->umidi->usb_protocol_ops->output_packet;
|
|
|
|
if (b >= 0xf8) {
|
|
output_packet(urb, p0 | 0x0f, b, 0, 0);
|
|
} else if (b >= 0xf0) {
|
|
switch (b) {
|
|
case 0xf0:
|
|
port->data[0] = b;
|
|
port->state = STATE_SYSEX_1;
|
|
break;
|
|
case 0xf1:
|
|
case 0xf3:
|
|
port->data[0] = b;
|
|
port->state = STATE_1PARAM;
|
|
break;
|
|
case 0xf2:
|
|
port->data[0] = b;
|
|
port->state = STATE_2PARAM_1;
|
|
break;
|
|
case 0xf4:
|
|
case 0xf5:
|
|
port->state = STATE_UNKNOWN;
|
|
break;
|
|
case 0xf6:
|
|
output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
|
|
port->state = STATE_UNKNOWN;
|
|
break;
|
|
case 0xf7:
|
|
switch (port->state) {
|
|
case STATE_SYSEX_0:
|
|
output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
|
|
break;
|
|
case STATE_SYSEX_1:
|
|
output_packet(urb, p0 | 0x06, port->data[0],
|
|
0xf7, 0);
|
|
break;
|
|
case STATE_SYSEX_2:
|
|
output_packet(urb, p0 | 0x07, port->data[0],
|
|
port->data[1], 0xf7);
|
|
break;
|
|
}
|
|
port->state = STATE_UNKNOWN;
|
|
break;
|
|
}
|
|
} else if (b >= 0x80) {
|
|
port->data[0] = b;
|
|
if (b >= 0xc0 && b <= 0xdf)
|
|
port->state = STATE_1PARAM;
|
|
else
|
|
port->state = STATE_2PARAM_1;
|
|
} else { /* b < 0x80 */
|
|
switch (port->state) {
|
|
case STATE_1PARAM:
|
|
if (port->data[0] < 0xf0) {
|
|
p0 |= port->data[0] >> 4;
|
|
} else {
|
|
p0 |= 0x02;
|
|
port->state = STATE_UNKNOWN;
|
|
}
|
|
output_packet(urb, p0, port->data[0], b, 0);
|
|
break;
|
|
case STATE_2PARAM_1:
|
|
port->data[1] = b;
|
|
port->state = STATE_2PARAM_2;
|
|
break;
|
|
case STATE_2PARAM_2:
|
|
if (port->data[0] < 0xf0) {
|
|
p0 |= port->data[0] >> 4;
|
|
port->state = STATE_2PARAM_1;
|
|
} else {
|
|
p0 |= 0x03;
|
|
port->state = STATE_UNKNOWN;
|
|
}
|
|
output_packet(urb, p0, port->data[0], port->data[1], b);
|
|
break;
|
|
case STATE_SYSEX_0:
|
|
port->data[0] = b;
|
|
port->state = STATE_SYSEX_1;
|
|
break;
|
|
case STATE_SYSEX_1:
|
|
port->data[1] = b;
|
|
port->state = STATE_SYSEX_2;
|
|
break;
|
|
case STATE_SYSEX_2:
|
|
output_packet(urb, p0 | 0x04, port->data[0],
|
|
port->data[1], b);
|
|
port->state = STATE_SYSEX_0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
int p;
|
|
|
|
/* FIXME: lower-numbered ports can starve higher-numbered ports */
|
|
for (p = 0; p < 0x10; ++p) {
|
|
struct usbmidi_out_port *port = &ep->ports[p];
|
|
if (!port->active)
|
|
continue;
|
|
while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
|
|
uint8_t b;
|
|
if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
|
|
port->active = 0;
|
|
break;
|
|
}
|
|
snd_usbmidi_transmit_byte(port, b, urb);
|
|
}
|
|
}
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_standard_ops = {
|
|
.input = snd_usbmidi_standard_input,
|
|
.output = snd_usbmidi_standard_output,
|
|
.output_packet = snd_usbmidi_output_standard_packet,
|
|
};
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_midiman_ops = {
|
|
.input = snd_usbmidi_midiman_input,
|
|
.output = snd_usbmidi_standard_output,
|
|
.output_packet = snd_usbmidi_output_midiman_packet,
|
|
};
|
|
|
|
static const
|
|
struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
|
|
.input = snd_usbmidi_maudio_broken_running_status_input,
|
|
.output = snd_usbmidi_standard_output,
|
|
.output_packet = snd_usbmidi_output_standard_packet,
|
|
};
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_cme_ops = {
|
|
.input = snd_usbmidi_cme_input,
|
|
.output = snd_usbmidi_standard_output,
|
|
.output_packet = snd_usbmidi_output_standard_packet,
|
|
};
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_ch345_broken_sysex_ops = {
|
|
.input = ch345_broken_sysex_input,
|
|
.output = snd_usbmidi_standard_output,
|
|
.output_packet = snd_usbmidi_output_standard_packet,
|
|
};
|
|
|
|
/*
|
|
* AKAI MPD16 protocol:
|
|
*
|
|
* For control port (endpoint 1):
|
|
* ==============================
|
|
* One or more chunks consisting of first byte of (0x10 | msg_len) and then a
|
|
* SysEx message (msg_len=9 bytes long).
|
|
*
|
|
* For data port (endpoint 2):
|
|
* ===========================
|
|
* One or more chunks consisting of first byte of (0x20 | msg_len) and then a
|
|
* MIDI message (msg_len bytes long)
|
|
*
|
|
* Messages sent: Active Sense, Note On, Poly Pressure, Control Change.
|
|
*/
|
|
static void snd_usbmidi_akai_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
unsigned int pos = 0;
|
|
unsigned int len = (unsigned int)buffer_length;
|
|
while (pos < len) {
|
|
unsigned int port = (buffer[pos] >> 4) - 1;
|
|
unsigned int msg_len = buffer[pos] & 0x0f;
|
|
pos++;
|
|
if (pos + msg_len <= len && port < 2)
|
|
snd_usbmidi_input_data(ep, 0, &buffer[pos], msg_len);
|
|
pos += msg_len;
|
|
}
|
|
}
|
|
|
|
#define MAX_AKAI_SYSEX_LEN 9
|
|
|
|
static void snd_usbmidi_akai_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
uint8_t *msg;
|
|
int pos, end, count, buf_end;
|
|
uint8_t tmp[MAX_AKAI_SYSEX_LEN];
|
|
struct snd_rawmidi_substream *substream = ep->ports[0].substream;
|
|
|
|
if (!ep->ports[0].active)
|
|
return;
|
|
|
|
msg = urb->transfer_buffer + urb->transfer_buffer_length;
|
|
buf_end = ep->max_transfer - MAX_AKAI_SYSEX_LEN - 1;
|
|
|
|
/* only try adding more data when there's space for at least 1 SysEx */
|
|
while (urb->transfer_buffer_length < buf_end) {
|
|
count = snd_rawmidi_transmit_peek(substream,
|
|
tmp, MAX_AKAI_SYSEX_LEN);
|
|
if (!count) {
|
|
ep->ports[0].active = 0;
|
|
return;
|
|
}
|
|
/* try to skip non-SysEx data */
|
|
for (pos = 0; pos < count && tmp[pos] != 0xF0; pos++)
|
|
;
|
|
|
|
if (pos > 0) {
|
|
snd_rawmidi_transmit_ack(substream, pos);
|
|
continue;
|
|
}
|
|
|
|
/* look for the start or end marker */
|
|
for (end = 1; end < count && tmp[end] < 0xF0; end++)
|
|
;
|
|
|
|
/* next SysEx started before the end of current one */
|
|
if (end < count && tmp[end] == 0xF0) {
|
|
/* it's incomplete - drop it */
|
|
snd_rawmidi_transmit_ack(substream, end);
|
|
continue;
|
|
}
|
|
/* SysEx complete */
|
|
if (end < count && tmp[end] == 0xF7) {
|
|
/* queue it, ack it, and get the next one */
|
|
count = end + 1;
|
|
msg[0] = 0x10 | count;
|
|
memcpy(&msg[1], tmp, count);
|
|
snd_rawmidi_transmit_ack(substream, count);
|
|
urb->transfer_buffer_length += count + 1;
|
|
msg += count + 1;
|
|
continue;
|
|
}
|
|
/* less than 9 bytes and no end byte - wait for more */
|
|
if (count < MAX_AKAI_SYSEX_LEN) {
|
|
ep->ports[0].active = 0;
|
|
return;
|
|
}
|
|
/* 9 bytes and no end marker in sight - malformed, skip it */
|
|
snd_rawmidi_transmit_ack(substream, count);
|
|
}
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_akai_ops = {
|
|
.input = snd_usbmidi_akai_input,
|
|
.output = snd_usbmidi_akai_output,
|
|
};
|
|
|
|
/*
|
|
* Novation USB MIDI protocol: number of data bytes is in the first byte
|
|
* (when receiving) (+1!) or in the second byte (when sending); data begins
|
|
* at the third byte.
|
|
*/
|
|
|
|
static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
|
|
return;
|
|
snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
|
|
}
|
|
|
|
static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
uint8_t *transfer_buffer;
|
|
int count;
|
|
|
|
if (!ep->ports[0].active)
|
|
return;
|
|
transfer_buffer = urb->transfer_buffer;
|
|
count = snd_rawmidi_transmit(ep->ports[0].substream,
|
|
&transfer_buffer[2],
|
|
ep->max_transfer - 2);
|
|
if (count < 1) {
|
|
ep->ports[0].active = 0;
|
|
return;
|
|
}
|
|
transfer_buffer[0] = 0;
|
|
transfer_buffer[1] = count;
|
|
urb->transfer_buffer_length = 2 + count;
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_novation_ops = {
|
|
.input = snd_usbmidi_novation_input,
|
|
.output = snd_usbmidi_novation_output,
|
|
};
|
|
|
|
/*
|
|
* "raw" protocol: just move raw MIDI bytes from/to the endpoint
|
|
*/
|
|
|
|
static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
|
|
}
|
|
|
|
static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
int count;
|
|
|
|
if (!ep->ports[0].active)
|
|
return;
|
|
count = snd_rawmidi_transmit(ep->ports[0].substream,
|
|
urb->transfer_buffer,
|
|
ep->max_transfer);
|
|
if (count < 1) {
|
|
ep->ports[0].active = 0;
|
|
return;
|
|
}
|
|
urb->transfer_buffer_length = count;
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_raw_ops = {
|
|
.input = snd_usbmidi_raw_input,
|
|
.output = snd_usbmidi_raw_output,
|
|
};
|
|
|
|
/*
|
|
* FTDI protocol: raw MIDI bytes, but input packets have two modem status bytes.
|
|
*/
|
|
|
|
static void snd_usbmidi_ftdi_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
if (buffer_length > 2)
|
|
snd_usbmidi_input_data(ep, 0, buffer + 2, buffer_length - 2);
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_ftdi_ops = {
|
|
.input = snd_usbmidi_ftdi_input,
|
|
.output = snd_usbmidi_raw_output,
|
|
};
|
|
|
|
static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
if (buffer_length != 9)
|
|
return;
|
|
buffer_length = 8;
|
|
while (buffer_length && buffer[buffer_length - 1] == 0xFD)
|
|
buffer_length--;
|
|
if (buffer_length)
|
|
snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
|
|
}
|
|
|
|
static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
int count;
|
|
|
|
if (!ep->ports[0].active)
|
|
return;
|
|
switch (snd_usb_get_speed(ep->umidi->dev)) {
|
|
case USB_SPEED_HIGH:
|
|
case USB_SPEED_SUPER:
|
|
case USB_SPEED_SUPER_PLUS:
|
|
count = 1;
|
|
break;
|
|
default:
|
|
count = 2;
|
|
}
|
|
count = snd_rawmidi_transmit(ep->ports[0].substream,
|
|
urb->transfer_buffer,
|
|
count);
|
|
if (count < 1) {
|
|
ep->ports[0].active = 0;
|
|
return;
|
|
}
|
|
|
|
memset(urb->transfer_buffer + count, 0xFD, ep->max_transfer - count);
|
|
urb->transfer_buffer_length = ep->max_transfer;
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_122l_ops = {
|
|
.input = snd_usbmidi_us122l_input,
|
|
.output = snd_usbmidi_us122l_output,
|
|
};
|
|
|
|
/*
|
|
* Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
|
|
*/
|
|
|
|
static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint *ep)
|
|
{
|
|
static const u8 init_data[] = {
|
|
/* initialization magic: "get version" */
|
|
0xf0,
|
|
0x00, 0x20, 0x31, /* Emagic */
|
|
0x64, /* Unitor8 */
|
|
0x0b, /* version number request */
|
|
0x00, /* command version */
|
|
0x00, /* EEPROM, box 0 */
|
|
0xf7
|
|
};
|
|
send_bulk_static_data(ep, init_data, sizeof(init_data));
|
|
/* while we're at it, pour on more magic */
|
|
send_bulk_static_data(ep, init_data, sizeof(init_data));
|
|
}
|
|
|
|
static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint *ep)
|
|
{
|
|
static const u8 finish_data[] = {
|
|
/* switch to patch mode with last preset */
|
|
0xf0,
|
|
0x00, 0x20, 0x31, /* Emagic */
|
|
0x64, /* Unitor8 */
|
|
0x10, /* patch switch command */
|
|
0x00, /* command version */
|
|
0x7f, /* to all boxes */
|
|
0x40, /* last preset in EEPROM */
|
|
0xf7
|
|
};
|
|
send_bulk_static_data(ep, finish_data, sizeof(finish_data));
|
|
}
|
|
|
|
static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint *ep,
|
|
uint8_t *buffer, int buffer_length)
|
|
{
|
|
int i;
|
|
|
|
/* FF indicates end of valid data */
|
|
for (i = 0; i < buffer_length; ++i)
|
|
if (buffer[i] == 0xff) {
|
|
buffer_length = i;
|
|
break;
|
|
}
|
|
|
|
/* handle F5 at end of last buffer */
|
|
if (ep->seen_f5)
|
|
goto switch_port;
|
|
|
|
while (buffer_length > 0) {
|
|
/* determine size of data until next F5 */
|
|
for (i = 0; i < buffer_length; ++i)
|
|
if (buffer[i] == 0xf5)
|
|
break;
|
|
snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
|
|
buffer += i;
|
|
buffer_length -= i;
|
|
|
|
if (buffer_length <= 0)
|
|
break;
|
|
/* assert(buffer[0] == 0xf5); */
|
|
ep->seen_f5 = 1;
|
|
++buffer;
|
|
--buffer_length;
|
|
|
|
switch_port:
|
|
if (buffer_length <= 0)
|
|
break;
|
|
if (buffer[0] < 0x80) {
|
|
ep->current_port = (buffer[0] - 1) & 15;
|
|
++buffer;
|
|
--buffer_length;
|
|
}
|
|
ep->seen_f5 = 0;
|
|
}
|
|
}
|
|
|
|
static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint *ep,
|
|
struct urb *urb)
|
|
{
|
|
int port0 = ep->current_port;
|
|
uint8_t *buf = urb->transfer_buffer;
|
|
int buf_free = ep->max_transfer;
|
|
int length, i;
|
|
|
|
for (i = 0; i < 0x10; ++i) {
|
|
/* round-robin, starting at the last current port */
|
|
int portnum = (port0 + i) & 15;
|
|
struct usbmidi_out_port *port = &ep->ports[portnum];
|
|
|
|
if (!port->active)
|
|
continue;
|
|
if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
|
|
port->active = 0;
|
|
continue;
|
|
}
|
|
|
|
if (portnum != ep->current_port) {
|
|
if (buf_free < 2)
|
|
break;
|
|
ep->current_port = portnum;
|
|
buf[0] = 0xf5;
|
|
buf[1] = (portnum + 1) & 15;
|
|
buf += 2;
|
|
buf_free -= 2;
|
|
}
|
|
|
|
if (buf_free < 1)
|
|
break;
|
|
length = snd_rawmidi_transmit(port->substream, buf, buf_free);
|
|
if (length > 0) {
|
|
buf += length;
|
|
buf_free -= length;
|
|
if (buf_free < 1)
|
|
break;
|
|
}
|
|
}
|
|
if (buf_free < ep->max_transfer && buf_free > 0) {
|
|
*buf = 0xff;
|
|
--buf_free;
|
|
}
|
|
urb->transfer_buffer_length = ep->max_transfer - buf_free;
|
|
}
|
|
|
|
static const struct usb_protocol_ops snd_usbmidi_emagic_ops = {
|
|
.input = snd_usbmidi_emagic_input,
|
|
.output = snd_usbmidi_emagic_output,
|
|
.init_out_endpoint = snd_usbmidi_emagic_init_out,
|
|
.finish_out_endpoint = snd_usbmidi_emagic_finish_out,
|
|
};
|
|
|
|
|
|
static void update_roland_altsetting(struct snd_usb_midi *umidi)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
int is_light_load;
|
|
|
|
intf = umidi->iface;
|
|
is_light_load = intf->cur_altsetting != intf->altsetting;
|
|
if (umidi->roland_load_ctl->private_value == is_light_load)
|
|
return;
|
|
hostif = &intf->altsetting[umidi->roland_load_ctl->private_value];
|
|
intfd = get_iface_desc(hostif);
|
|
snd_usbmidi_input_stop(&umidi->list);
|
|
usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
|
|
intfd->bAlternateSetting);
|
|
snd_usbmidi_input_start(&umidi->list);
|
|
}
|
|
|
|
static int substream_open(struct snd_rawmidi_substream *substream, int dir,
|
|
int open)
|
|
{
|
|
struct snd_usb_midi *umidi = substream->rmidi->private_data;
|
|
struct snd_kcontrol *ctl;
|
|
|
|
down_read(&umidi->disc_rwsem);
|
|
if (umidi->disconnected) {
|
|
up_read(&umidi->disc_rwsem);
|
|
return open ? -ENODEV : 0;
|
|
}
|
|
|
|
mutex_lock(&umidi->mutex);
|
|
if (open) {
|
|
if (!umidi->opened[0] && !umidi->opened[1]) {
|
|
if (umidi->roland_load_ctl) {
|
|
ctl = umidi->roland_load_ctl;
|
|
ctl->vd[0].access |=
|
|
SNDRV_CTL_ELEM_ACCESS_INACTIVE;
|
|
snd_ctl_notify(umidi->card,
|
|
SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
|
|
update_roland_altsetting(umidi);
|
|
}
|
|
}
|
|
umidi->opened[dir]++;
|
|
if (umidi->opened[1])
|
|
snd_usbmidi_input_start(&umidi->list);
|
|
} else {
|
|
umidi->opened[dir]--;
|
|
if (!umidi->opened[1])
|
|
snd_usbmidi_input_stop(&umidi->list);
|
|
if (!umidi->opened[0] && !umidi->opened[1]) {
|
|
if (umidi->roland_load_ctl) {
|
|
ctl = umidi->roland_load_ctl;
|
|
ctl->vd[0].access &=
|
|
~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
|
|
snd_ctl_notify(umidi->card,
|
|
SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
|
|
}
|
|
}
|
|
}
|
|
mutex_unlock(&umidi->mutex);
|
|
up_read(&umidi->disc_rwsem);
|
|
return 0;
|
|
}
|
|
|
|
static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
|
|
{
|
|
struct snd_usb_midi *umidi = substream->rmidi->private_data;
|
|
struct usbmidi_out_port *port = NULL;
|
|
int i, j;
|
|
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
|
|
if (umidi->endpoints[i].out)
|
|
for (j = 0; j < 0x10; ++j)
|
|
if (umidi->endpoints[i].out->ports[j].substream == substream) {
|
|
port = &umidi->endpoints[i].out->ports[j];
|
|
break;
|
|
}
|
|
if (!port) {
|
|
snd_BUG();
|
|
return -ENXIO;
|
|
}
|
|
|
|
substream->runtime->private_data = port;
|
|
port->state = STATE_UNKNOWN;
|
|
return substream_open(substream, 0, 1);
|
|
}
|
|
|
|
static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return substream_open(substream, 0, 0);
|
|
}
|
|
|
|
static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream,
|
|
int up)
|
|
{
|
|
struct usbmidi_out_port *port =
|
|
(struct usbmidi_out_port *)substream->runtime->private_data;
|
|
|
|
port->active = up;
|
|
if (up) {
|
|
if (port->ep->umidi->disconnected) {
|
|
/* gobble up remaining bytes to prevent wait in
|
|
* snd_rawmidi_drain_output */
|
|
snd_rawmidi_proceed(substream);
|
|
return;
|
|
}
|
|
tasklet_schedule(&port->ep->tasklet);
|
|
}
|
|
}
|
|
|
|
static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream)
|
|
{
|
|
struct usbmidi_out_port *port = substream->runtime->private_data;
|
|
struct snd_usb_midi_out_endpoint *ep = port->ep;
|
|
unsigned int drain_urbs;
|
|
DEFINE_WAIT(wait);
|
|
long timeout = msecs_to_jiffies(50);
|
|
|
|
if (ep->umidi->disconnected)
|
|
return;
|
|
/*
|
|
* The substream buffer is empty, but some data might still be in the
|
|
* currently active URBs, so we have to wait for those to complete.
|
|
*/
|
|
spin_lock_irq(&ep->buffer_lock);
|
|
drain_urbs = ep->active_urbs;
|
|
if (drain_urbs) {
|
|
ep->drain_urbs |= drain_urbs;
|
|
do {
|
|
prepare_to_wait(&ep->drain_wait, &wait,
|
|
TASK_UNINTERRUPTIBLE);
|
|
spin_unlock_irq(&ep->buffer_lock);
|
|
timeout = schedule_timeout(timeout);
|
|
spin_lock_irq(&ep->buffer_lock);
|
|
drain_urbs &= ep->drain_urbs;
|
|
} while (drain_urbs && timeout);
|
|
finish_wait(&ep->drain_wait, &wait);
|
|
}
|
|
spin_unlock_irq(&ep->buffer_lock);
|
|
}
|
|
|
|
static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return substream_open(substream, 1, 1);
|
|
}
|
|
|
|
static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
|
|
{
|
|
return substream_open(substream, 1, 0);
|
|
}
|
|
|
|
static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream,
|
|
int up)
|
|
{
|
|
struct snd_usb_midi *umidi = substream->rmidi->private_data;
|
|
|
|
if (up)
|
|
set_bit(substream->number, &umidi->input_triggered);
|
|
else
|
|
clear_bit(substream->number, &umidi->input_triggered);
|
|
}
|
|
|
|
static const struct snd_rawmidi_ops snd_usbmidi_output_ops = {
|
|
.open = snd_usbmidi_output_open,
|
|
.close = snd_usbmidi_output_close,
|
|
.trigger = snd_usbmidi_output_trigger,
|
|
.drain = snd_usbmidi_output_drain,
|
|
};
|
|
|
|
static const struct snd_rawmidi_ops snd_usbmidi_input_ops = {
|
|
.open = snd_usbmidi_input_open,
|
|
.close = snd_usbmidi_input_close,
|
|
.trigger = snd_usbmidi_input_trigger
|
|
};
|
|
|
|
static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb,
|
|
unsigned int buffer_length)
|
|
{
|
|
usb_free_coherent(umidi->dev, buffer_length,
|
|
urb->transfer_buffer, urb->transfer_dma);
|
|
usb_free_urb(urb);
|
|
}
|
|
|
|
/*
|
|
* Frees an input endpoint.
|
|
* May be called when ep hasn't been initialized completely.
|
|
*/
|
|
static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint *ep)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < INPUT_URBS; ++i)
|
|
if (ep->urbs[i])
|
|
free_urb_and_buffer(ep->umidi, ep->urbs[i],
|
|
ep->urbs[i]->transfer_buffer_length);
|
|
kfree(ep);
|
|
}
|
|
|
|
/*
|
|
* Creates an input endpoint.
|
|
*/
|
|
static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *ep_info,
|
|
struct snd_usb_midi_endpoint *rep)
|
|
{
|
|
struct snd_usb_midi_in_endpoint *ep;
|
|
void *buffer;
|
|
unsigned int pipe;
|
|
int length;
|
|
unsigned int i;
|
|
int err;
|
|
|
|
rep->in = NULL;
|
|
ep = kzalloc(sizeof(*ep), GFP_KERNEL);
|
|
if (!ep)
|
|
return -ENOMEM;
|
|
ep->umidi = umidi;
|
|
|
|
for (i = 0; i < INPUT_URBS; ++i) {
|
|
ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!ep->urbs[i]) {
|
|
err = -ENOMEM;
|
|
goto error;
|
|
}
|
|
}
|
|
if (ep_info->in_interval)
|
|
pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
|
|
else
|
|
pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
|
|
length = usb_maxpacket(umidi->dev, pipe, 0);
|
|
for (i = 0; i < INPUT_URBS; ++i) {
|
|
buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
|
|
&ep->urbs[i]->transfer_dma);
|
|
if (!buffer) {
|
|
err = -ENOMEM;
|
|
goto error;
|
|
}
|
|
if (ep_info->in_interval)
|
|
usb_fill_int_urb(ep->urbs[i], umidi->dev,
|
|
pipe, buffer, length,
|
|
snd_usbmidi_in_urb_complete,
|
|
ep, ep_info->in_interval);
|
|
else
|
|
usb_fill_bulk_urb(ep->urbs[i], umidi->dev,
|
|
pipe, buffer, length,
|
|
snd_usbmidi_in_urb_complete, ep);
|
|
ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
|
|
err = usb_urb_ep_type_check(ep->urbs[i]);
|
|
if (err < 0) {
|
|
dev_err(&umidi->dev->dev, "invalid MIDI in EP %x\n",
|
|
ep_info->in_ep);
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
rep->in = ep;
|
|
return 0;
|
|
|
|
error:
|
|
snd_usbmidi_in_endpoint_delete(ep);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/*
|
|
* Frees an output endpoint.
|
|
* May be called when ep hasn't been initialized completely.
|
|
*/
|
|
static void snd_usbmidi_out_endpoint_clear(struct snd_usb_midi_out_endpoint *ep)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < OUTPUT_URBS; ++i)
|
|
if (ep->urbs[i].urb) {
|
|
free_urb_and_buffer(ep->umidi, ep->urbs[i].urb,
|
|
ep->max_transfer);
|
|
ep->urbs[i].urb = NULL;
|
|
}
|
|
}
|
|
|
|
static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint *ep)
|
|
{
|
|
snd_usbmidi_out_endpoint_clear(ep);
|
|
kfree(ep);
|
|
}
|
|
|
|
/*
|
|
* Creates an output endpoint, and initializes output ports.
|
|
*/
|
|
static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *ep_info,
|
|
struct snd_usb_midi_endpoint *rep)
|
|
{
|
|
struct snd_usb_midi_out_endpoint *ep;
|
|
unsigned int i;
|
|
unsigned int pipe;
|
|
void *buffer;
|
|
int err;
|
|
|
|
rep->out = NULL;
|
|
ep = kzalloc(sizeof(*ep), GFP_KERNEL);
|
|
if (!ep)
|
|
return -ENOMEM;
|
|
ep->umidi = umidi;
|
|
|
|
for (i = 0; i < OUTPUT_URBS; ++i) {
|
|
ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!ep->urbs[i].urb) {
|
|
err = -ENOMEM;
|
|
goto error;
|
|
}
|
|
ep->urbs[i].ep = ep;
|
|
}
|
|
if (ep_info->out_interval)
|
|
pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep);
|
|
else
|
|
pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
|
|
switch (umidi->usb_id) {
|
|
default:
|
|
ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
|
|
break;
|
|
/*
|
|
* Various chips declare a packet size larger than 4 bytes, but
|
|
* do not actually work with larger packets:
|
|
*/
|
|
case USB_ID(0x0a67, 0x5011): /* Medeli DD305 */
|
|
case USB_ID(0x0a92, 0x1020): /* ESI M4U */
|
|
case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */
|
|
case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */
|
|
case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */
|
|
case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */
|
|
case USB_ID(0xfc08, 0x0101): /* Unknown vendor Cable */
|
|
ep->max_transfer = 4;
|
|
break;
|
|
/*
|
|
* Some devices only work with 9 bytes packet size:
|
|
*/
|
|
case USB_ID(0x0644, 0x800E): /* Tascam US-122L */
|
|
case USB_ID(0x0644, 0x800F): /* Tascam US-144 */
|
|
ep->max_transfer = 9;
|
|
break;
|
|
}
|
|
for (i = 0; i < OUTPUT_URBS; ++i) {
|
|
buffer = usb_alloc_coherent(umidi->dev,
|
|
ep->max_transfer, GFP_KERNEL,
|
|
&ep->urbs[i].urb->transfer_dma);
|
|
if (!buffer) {
|
|
err = -ENOMEM;
|
|
goto error;
|
|
}
|
|
if (ep_info->out_interval)
|
|
usb_fill_int_urb(ep->urbs[i].urb, umidi->dev,
|
|
pipe, buffer, ep->max_transfer,
|
|
snd_usbmidi_out_urb_complete,
|
|
&ep->urbs[i], ep_info->out_interval);
|
|
else
|
|
usb_fill_bulk_urb(ep->urbs[i].urb, umidi->dev,
|
|
pipe, buffer, ep->max_transfer,
|
|
snd_usbmidi_out_urb_complete,
|
|
&ep->urbs[i]);
|
|
err = usb_urb_ep_type_check(ep->urbs[i].urb);
|
|
if (err < 0) {
|
|
dev_err(&umidi->dev->dev, "invalid MIDI out EP %x\n",
|
|
ep_info->out_ep);
|
|
goto error;
|
|
}
|
|
ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
|
|
}
|
|
|
|
spin_lock_init(&ep->buffer_lock);
|
|
tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
|
|
init_waitqueue_head(&ep->drain_wait);
|
|
|
|
for (i = 0; i < 0x10; ++i)
|
|
if (ep_info->out_cables & (1 << i)) {
|
|
ep->ports[i].ep = ep;
|
|
ep->ports[i].cable = i << 4;
|
|
}
|
|
|
|
if (umidi->usb_protocol_ops->init_out_endpoint)
|
|
umidi->usb_protocol_ops->init_out_endpoint(ep);
|
|
|
|
rep->out = ep;
|
|
return 0;
|
|
|
|
error:
|
|
snd_usbmidi_out_endpoint_delete(ep);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Frees everything.
|
|
*/
|
|
static void snd_usbmidi_free(struct snd_usb_midi *umidi)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i];
|
|
if (ep->out)
|
|
snd_usbmidi_out_endpoint_delete(ep->out);
|
|
if (ep->in)
|
|
snd_usbmidi_in_endpoint_delete(ep->in);
|
|
}
|
|
mutex_destroy(&umidi->mutex);
|
|
kfree(umidi);
|
|
}
|
|
|
|
/*
|
|
* Unlinks all URBs (must be done before the usb_device is deleted).
|
|
*/
|
|
void snd_usbmidi_disconnect(struct list_head *p)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
unsigned int i, j;
|
|
|
|
umidi = list_entry(p, struct snd_usb_midi, list);
|
|
/*
|
|
* an URB's completion handler may start the timer and
|
|
* a timer may submit an URB. To reliably break the cycle
|
|
* a flag under lock must be used
|
|
*/
|
|
down_write(&umidi->disc_rwsem);
|
|
spin_lock_irq(&umidi->disc_lock);
|
|
umidi->disconnected = 1;
|
|
spin_unlock_irq(&umidi->disc_lock);
|
|
up_write(&umidi->disc_rwsem);
|
|
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i];
|
|
if (ep->out)
|
|
tasklet_kill(&ep->out->tasklet);
|
|
if (ep->out) {
|
|
for (j = 0; j < OUTPUT_URBS; ++j)
|
|
usb_kill_urb(ep->out->urbs[j].urb);
|
|
if (umidi->usb_protocol_ops->finish_out_endpoint)
|
|
umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
|
|
ep->out->active_urbs = 0;
|
|
if (ep->out->drain_urbs) {
|
|
ep->out->drain_urbs = 0;
|
|
wake_up(&ep->out->drain_wait);
|
|
}
|
|
}
|
|
if (ep->in)
|
|
for (j = 0; j < INPUT_URBS; ++j)
|
|
usb_kill_urb(ep->in->urbs[j]);
|
|
/* free endpoints here; later call can result in Oops */
|
|
if (ep->out)
|
|
snd_usbmidi_out_endpoint_clear(ep->out);
|
|
if (ep->in) {
|
|
snd_usbmidi_in_endpoint_delete(ep->in);
|
|
ep->in = NULL;
|
|
}
|
|
}
|
|
del_timer_sync(&umidi->error_timer);
|
|
}
|
|
EXPORT_SYMBOL(snd_usbmidi_disconnect);
|
|
|
|
static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
|
|
{
|
|
struct snd_usb_midi *umidi = rmidi->private_data;
|
|
snd_usbmidi_free(umidi);
|
|
}
|
|
|
|
static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi *umidi,
|
|
int stream,
|
|
int number)
|
|
{
|
|
struct snd_rawmidi_substream *substream;
|
|
|
|
list_for_each_entry(substream, &umidi->rmidi->streams[stream].substreams,
|
|
list) {
|
|
if (substream->number == number)
|
|
return substream;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* This list specifies names for ports that do not fit into the standard
|
|
* "(product) MIDI (n)" schema because they aren't external MIDI ports,
|
|
* such as internal control or synthesizer ports.
|
|
*/
|
|
static struct port_info {
|
|
u32 id;
|
|
short int port;
|
|
short int voices;
|
|
const char *name;
|
|
unsigned int seq_flags;
|
|
} snd_usbmidi_port_info[] = {
|
|
#define PORT_INFO(vendor, product, num, name_, voices_, flags) \
|
|
{ .id = USB_ID(vendor, product), \
|
|
.port = num, .voices = voices_, \
|
|
.name = name_, .seq_flags = flags }
|
|
#define EXTERNAL_PORT(vendor, product, num, name) \
|
|
PORT_INFO(vendor, product, num, name, 0, \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE | \
|
|
SNDRV_SEQ_PORT_TYPE_PORT)
|
|
#define CONTROL_PORT(vendor, product, num, name) \
|
|
PORT_INFO(vendor, product, num, name, 0, \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE)
|
|
#define GM_SYNTH_PORT(vendor, product, num, name, voices) \
|
|
PORT_INFO(vendor, product, num, name, voices, \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE | \
|
|
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
|
|
#define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
|
|
PORT_INFO(vendor, product, num, name, voices, \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE | \
|
|
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
|
|
#define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
|
|
PORT_INFO(vendor, product, num, name, voices, \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE | \
|
|
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
|
|
/* Yamaha MOTIF XF */
|
|
GM_SYNTH_PORT(0x0499, 0x105c, 0, "%s Tone Generator", 128),
|
|
CONTROL_PORT(0x0499, 0x105c, 1, "%s Remote Control"),
|
|
EXTERNAL_PORT(0x0499, 0x105c, 2, "%s Thru"),
|
|
CONTROL_PORT(0x0499, 0x105c, 3, "%s Editor"),
|
|
/* Roland UA-100 */
|
|
CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
|
|
/* Roland SC-8850 */
|
|
SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
|
|
SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
|
|
SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
|
|
SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
|
|
EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
|
|
EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
|
|
/* Roland U-8 */
|
|
EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
|
|
/* Roland SC-8820 */
|
|
SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
|
|
SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
|
|
EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
|
|
/* Roland SK-500 */
|
|
SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
|
|
SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
|
|
EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
|
|
/* Roland SC-D70 */
|
|
SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
|
|
SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
|
|
EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
|
|
/* Edirol UM-880 */
|
|
CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
|
|
/* Edirol SD-90 */
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
|
|
EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
|
|
EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
|
|
/* Edirol UM-550 */
|
|
CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
|
|
/* Edirol SD-20 */
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
|
|
EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
|
|
/* Edirol SD-80 */
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
|
|
EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
|
|
EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
|
|
/* Edirol UA-700 */
|
|
EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
|
|
/* Roland VariOS */
|
|
EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
|
|
EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
|
|
EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
|
|
/* Edirol PCR */
|
|
EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
|
|
EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
|
|
EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
|
|
/* BOSS GS-10 */
|
|
EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
|
|
/* Edirol UA-1000 */
|
|
EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
|
|
/* Edirol UR-80 */
|
|
EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
|
|
EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
|
|
EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
|
|
/* Edirol PCR-A */
|
|
EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
|
|
EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
|
|
EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
|
|
/* BOSS GT-PRO */
|
|
CONTROL_PORT(0x0582, 0x0089, 0, "%s Control"),
|
|
/* Edirol UM-3EX */
|
|
CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
|
|
/* Roland VG-99 */
|
|
CONTROL_PORT(0x0582, 0x00b2, 0, "%s Control"),
|
|
EXTERNAL_PORT(0x0582, 0x00b2, 1, "%s MIDI"),
|
|
/* Cakewalk Sonar V-Studio 100 */
|
|
EXTERNAL_PORT(0x0582, 0x00eb, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x00eb, 1, "%s Control"),
|
|
/* Roland VB-99 */
|
|
CONTROL_PORT(0x0582, 0x0102, 0, "%s Control"),
|
|
EXTERNAL_PORT(0x0582, 0x0102, 1, "%s MIDI"),
|
|
/* Roland A-PRO */
|
|
EXTERNAL_PORT(0x0582, 0x010f, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x010f, 1, "%s 1"),
|
|
CONTROL_PORT(0x0582, 0x010f, 2, "%s 2"),
|
|
/* Roland SD-50 */
|
|
ROLAND_SYNTH_PORT(0x0582, 0x0114, 0, "%s Synth", 128),
|
|
EXTERNAL_PORT(0x0582, 0x0114, 1, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x0114, 2, "%s Control"),
|
|
/* Roland OCTA-CAPTURE */
|
|
EXTERNAL_PORT(0x0582, 0x0120, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x0120, 1, "%s Control"),
|
|
EXTERNAL_PORT(0x0582, 0x0121, 0, "%s MIDI"),
|
|
CONTROL_PORT(0x0582, 0x0121, 1, "%s Control"),
|
|
/* Roland SPD-SX */
|
|
CONTROL_PORT(0x0582, 0x0145, 0, "%s Control"),
|
|
EXTERNAL_PORT(0x0582, 0x0145, 1, "%s MIDI"),
|
|
/* Roland A-Series */
|
|
CONTROL_PORT(0x0582, 0x0156, 0, "%s Keyboard"),
|
|
EXTERNAL_PORT(0x0582, 0x0156, 1, "%s MIDI"),
|
|
/* Roland INTEGRA-7 */
|
|
ROLAND_SYNTH_PORT(0x0582, 0x015b, 0, "%s Synth", 128),
|
|
CONTROL_PORT(0x0582, 0x015b, 1, "%s Control"),
|
|
/* M-Audio MidiSport 8x8 */
|
|
CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
|
|
CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
|
|
/* MOTU Fastlane */
|
|
EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
|
|
EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
|
|
/* Emagic Unitor8/AMT8/MT4 */
|
|
EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
|
|
EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
|
|
EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
|
|
/* Akai MPD16 */
|
|
CONTROL_PORT(0x09e8, 0x0062, 0, "%s Control"),
|
|
PORT_INFO(0x09e8, 0x0062, 1, "%s MIDI", 0,
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE),
|
|
/* Access Music Virus TI */
|
|
EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI"),
|
|
PORT_INFO(0x133e, 0x0815, 1, "%s Synth", 0,
|
|
SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
|
|
SNDRV_SEQ_PORT_TYPE_HARDWARE |
|
|
SNDRV_SEQ_PORT_TYPE_SYNTHESIZER),
|
|
};
|
|
|
|
static struct port_info *find_port_info(struct snd_usb_midi *umidi, int number)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
|
|
if (snd_usbmidi_port_info[i].id == umidi->usb_id &&
|
|
snd_usbmidi_port_info[i].port == number)
|
|
return &snd_usbmidi_port_info[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
|
|
struct snd_seq_port_info *seq_port_info)
|
|
{
|
|
struct snd_usb_midi *umidi = rmidi->private_data;
|
|
struct port_info *port_info;
|
|
|
|
/* TODO: read port flags from descriptors */
|
|
port_info = find_port_info(umidi, number);
|
|
if (port_info) {
|
|
seq_port_info->type = port_info->seq_flags;
|
|
seq_port_info->midi_voices = port_info->voices;
|
|
}
|
|
}
|
|
|
|
static void snd_usbmidi_init_substream(struct snd_usb_midi *umidi,
|
|
int stream, int number,
|
|
struct snd_rawmidi_substream **rsubstream)
|
|
{
|
|
struct port_info *port_info;
|
|
const char *name_format;
|
|
|
|
struct snd_rawmidi_substream *substream =
|
|
snd_usbmidi_find_substream(umidi, stream, number);
|
|
if (!substream) {
|
|
dev_err(&umidi->dev->dev, "substream %d:%d not found\n", stream,
|
|
number);
|
|
return;
|
|
}
|
|
|
|
/* TODO: read port name from jack descriptor */
|
|
port_info = find_port_info(umidi, number);
|
|
name_format = port_info ? port_info->name : "%s MIDI %d";
|
|
snprintf(substream->name, sizeof(substream->name),
|
|
name_format, umidi->card->shortname, number + 1);
|
|
|
|
*rsubstream = substream;
|
|
}
|
|
|
|
/*
|
|
* Creates the endpoints and their ports.
|
|
*/
|
|
static int snd_usbmidi_create_endpoints(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoints)
|
|
{
|
|
int i, j, err;
|
|
int out_ports = 0, in_ports = 0;
|
|
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
if (endpoints[i].out_cables) {
|
|
err = snd_usbmidi_out_endpoint_create(umidi,
|
|
&endpoints[i],
|
|
&umidi->endpoints[i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
if (endpoints[i].in_cables) {
|
|
err = snd_usbmidi_in_endpoint_create(umidi,
|
|
&endpoints[i],
|
|
&umidi->endpoints[i]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
for (j = 0; j < 0x10; ++j) {
|
|
if (endpoints[i].out_cables & (1 << j)) {
|
|
snd_usbmidi_init_substream(umidi,
|
|
SNDRV_RAWMIDI_STREAM_OUTPUT,
|
|
out_ports,
|
|
&umidi->endpoints[i].out->ports[j].substream);
|
|
++out_ports;
|
|
}
|
|
if (endpoints[i].in_cables & (1 << j)) {
|
|
snd_usbmidi_init_substream(umidi,
|
|
SNDRV_RAWMIDI_STREAM_INPUT,
|
|
in_ports,
|
|
&umidi->endpoints[i].in->ports[j].substream);
|
|
++in_ports;
|
|
}
|
|
}
|
|
}
|
|
dev_dbg(&umidi->dev->dev, "created %d output and %d input ports\n",
|
|
out_ports, in_ports);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Returns MIDIStreaming device capabilities.
|
|
*/
|
|
static int snd_usbmidi_get_ms_info(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoints)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
struct usb_ms_header_descriptor *ms_header;
|
|
struct usb_host_endpoint *hostep;
|
|
struct usb_endpoint_descriptor *ep;
|
|
struct usb_ms_endpoint_descriptor *ms_ep;
|
|
int i, epidx;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf)
|
|
return -ENXIO;
|
|
hostif = &intf->altsetting[0];
|
|
intfd = get_iface_desc(hostif);
|
|
ms_header = (struct usb_ms_header_descriptor *)hostif->extra;
|
|
if (hostif->extralen >= 7 &&
|
|
ms_header->bLength >= 7 &&
|
|
ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
|
|
ms_header->bDescriptorSubtype == UAC_HEADER)
|
|
dev_dbg(&umidi->dev->dev, "MIDIStreaming version %02x.%02x\n",
|
|
ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
|
|
else
|
|
dev_warn(&umidi->dev->dev,
|
|
"MIDIStreaming interface descriptor not found\n");
|
|
|
|
epidx = 0;
|
|
for (i = 0; i < intfd->bNumEndpoints; ++i) {
|
|
hostep = &hostif->endpoint[i];
|
|
ep = get_ep_desc(hostep);
|
|
if (!usb_endpoint_xfer_bulk(ep) && !usb_endpoint_xfer_int(ep))
|
|
continue;
|
|
ms_ep = (struct usb_ms_endpoint_descriptor *)hostep->extra;
|
|
if (hostep->extralen < 4 ||
|
|
ms_ep->bLength < 4 ||
|
|
ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
|
|
ms_ep->bDescriptorSubtype != UAC_MS_GENERAL)
|
|
continue;
|
|
if (usb_endpoint_dir_out(ep)) {
|
|
if (endpoints[epidx].out_ep) {
|
|
if (++epidx >= MIDI_MAX_ENDPOINTS) {
|
|
dev_warn(&umidi->dev->dev,
|
|
"too many endpoints\n");
|
|
break;
|
|
}
|
|
}
|
|
endpoints[epidx].out_ep = usb_endpoint_num(ep);
|
|
if (usb_endpoint_xfer_int(ep))
|
|
endpoints[epidx].out_interval = ep->bInterval;
|
|
else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
|
|
/*
|
|
* Low speed bulk transfers don't exist, so
|
|
* force interrupt transfers for devices like
|
|
* ESI MIDI Mate that try to use them anyway.
|
|
*/
|
|
endpoints[epidx].out_interval = 1;
|
|
endpoints[epidx].out_cables =
|
|
(1 << ms_ep->bNumEmbMIDIJack) - 1;
|
|
dev_dbg(&umidi->dev->dev, "EP %02X: %d jack(s)\n",
|
|
ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
|
|
} else {
|
|
if (endpoints[epidx].in_ep) {
|
|
if (++epidx >= MIDI_MAX_ENDPOINTS) {
|
|
dev_warn(&umidi->dev->dev,
|
|
"too many endpoints\n");
|
|
break;
|
|
}
|
|
}
|
|
endpoints[epidx].in_ep = usb_endpoint_num(ep);
|
|
if (usb_endpoint_xfer_int(ep))
|
|
endpoints[epidx].in_interval = ep->bInterval;
|
|
else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
|
|
endpoints[epidx].in_interval = 1;
|
|
endpoints[epidx].in_cables =
|
|
(1 << ms_ep->bNumEmbMIDIJack) - 1;
|
|
dev_dbg(&umidi->dev->dev, "EP %02X: %d jack(s)\n",
|
|
ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int roland_load_info(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_info *info)
|
|
{
|
|
static const char *const names[] = { "High Load", "Light Load" };
|
|
|
|
return snd_ctl_enum_info(info, 1, 2, names);
|
|
}
|
|
|
|
static int roland_load_get(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
value->value.enumerated.item[0] = kcontrol->private_value;
|
|
return 0;
|
|
}
|
|
|
|
static int roland_load_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *value)
|
|
{
|
|
struct snd_usb_midi *umidi = kcontrol->private_data;
|
|
int changed;
|
|
|
|
if (value->value.enumerated.item[0] > 1)
|
|
return -EINVAL;
|
|
mutex_lock(&umidi->mutex);
|
|
changed = value->value.enumerated.item[0] != kcontrol->private_value;
|
|
if (changed)
|
|
kcontrol->private_value = value->value.enumerated.item[0];
|
|
mutex_unlock(&umidi->mutex);
|
|
return changed;
|
|
}
|
|
|
|
static const struct snd_kcontrol_new roland_load_ctl = {
|
|
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
|
|
.name = "MIDI Input Mode",
|
|
.info = roland_load_info,
|
|
.get = roland_load_get,
|
|
.put = roland_load_put,
|
|
.private_value = 1,
|
|
};
|
|
|
|
/*
|
|
* On Roland devices, use the second alternate setting to be able to use
|
|
* the interrupt input endpoint.
|
|
*/
|
|
static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi *umidi)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf || intf->num_altsetting != 2)
|
|
return;
|
|
|
|
hostif = &intf->altsetting[1];
|
|
intfd = get_iface_desc(hostif);
|
|
/* If either or both of the endpoints support interrupt transfer,
|
|
* then use the alternate setting
|
|
*/
|
|
if (intfd->bNumEndpoints != 2 ||
|
|
!((get_endpoint(hostif, 0)->bmAttributes &
|
|
USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT ||
|
|
(get_endpoint(hostif, 1)->bmAttributes &
|
|
USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT))
|
|
return;
|
|
|
|
dev_dbg(&umidi->dev->dev, "switching to altsetting %d with int ep\n",
|
|
intfd->bAlternateSetting);
|
|
usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
|
|
intfd->bAlternateSetting);
|
|
|
|
umidi->roland_load_ctl = snd_ctl_new1(&roland_load_ctl, umidi);
|
|
if (snd_ctl_add(umidi->card, umidi->roland_load_ctl) < 0)
|
|
umidi->roland_load_ctl = NULL;
|
|
}
|
|
|
|
/*
|
|
* Try to find any usable endpoints in the interface.
|
|
*/
|
|
static int snd_usbmidi_detect_endpoints(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoint,
|
|
int max_endpoints)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
struct usb_endpoint_descriptor *epd;
|
|
int i, out_eps = 0, in_eps = 0;
|
|
|
|
if (USB_ID_VENDOR(umidi->usb_id) == 0x0582)
|
|
snd_usbmidi_switch_roland_altsetting(umidi);
|
|
|
|
if (endpoint[0].out_ep || endpoint[0].in_ep)
|
|
return 0;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf || intf->num_altsetting < 1)
|
|
return -ENOENT;
|
|
hostif = intf->cur_altsetting;
|
|
intfd = get_iface_desc(hostif);
|
|
|
|
for (i = 0; i < intfd->bNumEndpoints; ++i) {
|
|
epd = get_endpoint(hostif, i);
|
|
if (!usb_endpoint_xfer_bulk(epd) &&
|
|
!usb_endpoint_xfer_int(epd))
|
|
continue;
|
|
if (out_eps < max_endpoints &&
|
|
usb_endpoint_dir_out(epd)) {
|
|
endpoint[out_eps].out_ep = usb_endpoint_num(epd);
|
|
if (usb_endpoint_xfer_int(epd))
|
|
endpoint[out_eps].out_interval = epd->bInterval;
|
|
++out_eps;
|
|
}
|
|
if (in_eps < max_endpoints &&
|
|
usb_endpoint_dir_in(epd)) {
|
|
endpoint[in_eps].in_ep = usb_endpoint_num(epd);
|
|
if (usb_endpoint_xfer_int(epd))
|
|
endpoint[in_eps].in_interval = epd->bInterval;
|
|
++in_eps;
|
|
}
|
|
}
|
|
return (out_eps || in_eps) ? 0 : -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* Detects the endpoints for one-port-per-endpoint protocols.
|
|
*/
|
|
static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoints)
|
|
{
|
|
int err, i;
|
|
|
|
err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
if (endpoints[i].out_ep)
|
|
endpoints[i].out_cables = 0x0001;
|
|
if (endpoints[i].in_ep)
|
|
endpoints[i].in_cables = 0x0001;
|
|
}
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Detects the endpoints and ports of Yamaha devices.
|
|
*/
|
|
static int snd_usbmidi_detect_yamaha(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoint)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
uint8_t *cs_desc;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf)
|
|
return -ENOENT;
|
|
hostif = intf->altsetting;
|
|
intfd = get_iface_desc(hostif);
|
|
if (intfd->bNumEndpoints < 1)
|
|
return -ENOENT;
|
|
|
|
/*
|
|
* For each port there is one MIDI_IN/OUT_JACK descriptor, not
|
|
* necessarily with any useful contents. So simply count 'em.
|
|
*/
|
|
for (cs_desc = hostif->extra;
|
|
cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
|
|
cs_desc += cs_desc[0]) {
|
|
if (cs_desc[1] == USB_DT_CS_INTERFACE) {
|
|
if (cs_desc[2] == UAC_MIDI_IN_JACK)
|
|
endpoint->in_cables =
|
|
(endpoint->in_cables << 1) | 1;
|
|
else if (cs_desc[2] == UAC_MIDI_OUT_JACK)
|
|
endpoint->out_cables =
|
|
(endpoint->out_cables << 1) | 1;
|
|
}
|
|
}
|
|
if (!endpoint->in_cables && !endpoint->out_cables)
|
|
return -ENOENT;
|
|
|
|
return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
|
|
}
|
|
|
|
/*
|
|
* Detects the endpoints and ports of Roland devices.
|
|
*/
|
|
static int snd_usbmidi_detect_roland(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoint)
|
|
{
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
u8 *cs_desc;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf)
|
|
return -ENOENT;
|
|
hostif = intf->altsetting;
|
|
/*
|
|
* Some devices have a descriptor <06 24 F1 02 <inputs> <outputs>>,
|
|
* some have standard class descriptors, or both kinds, or neither.
|
|
*/
|
|
for (cs_desc = hostif->extra;
|
|
cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
|
|
cs_desc += cs_desc[0]) {
|
|
if (cs_desc[0] >= 6 &&
|
|
cs_desc[1] == USB_DT_CS_INTERFACE &&
|
|
cs_desc[2] == 0xf1 &&
|
|
cs_desc[3] == 0x02) {
|
|
endpoint->in_cables = (1 << cs_desc[4]) - 1;
|
|
endpoint->out_cables = (1 << cs_desc[5]) - 1;
|
|
return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
|
|
} else if (cs_desc[0] >= 7 &&
|
|
cs_desc[1] == USB_DT_CS_INTERFACE &&
|
|
cs_desc[2] == UAC_HEADER) {
|
|
return snd_usbmidi_get_ms_info(umidi, endpoint);
|
|
}
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
/*
|
|
* Creates the endpoints and their ports for Midiman devices.
|
|
*/
|
|
static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi *umidi,
|
|
struct snd_usb_midi_endpoint_info *endpoint)
|
|
{
|
|
struct snd_usb_midi_endpoint_info ep_info;
|
|
struct usb_interface *intf;
|
|
struct usb_host_interface *hostif;
|
|
struct usb_interface_descriptor *intfd;
|
|
struct usb_endpoint_descriptor *epd;
|
|
int cable, err;
|
|
|
|
intf = umidi->iface;
|
|
if (!intf)
|
|
return -ENOENT;
|
|
hostif = intf->altsetting;
|
|
intfd = get_iface_desc(hostif);
|
|
/*
|
|
* The various MidiSport devices have more or less random endpoint
|
|
* numbers, so we have to identify the endpoints by their index in
|
|
* the descriptor array, like the driver for that other OS does.
|
|
*
|
|
* There is one interrupt input endpoint for all input ports, one
|
|
* bulk output endpoint for even-numbered ports, and one for odd-
|
|
* numbered ports. Both bulk output endpoints have corresponding
|
|
* input bulk endpoints (at indices 1 and 3) which aren't used.
|
|
*/
|
|
if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
|
|
dev_dbg(&umidi->dev->dev, "not enough endpoints\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
epd = get_endpoint(hostif, 0);
|
|
if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) {
|
|
dev_dbg(&umidi->dev->dev, "endpoint[0] isn't interrupt\n");
|
|
return -ENXIO;
|
|
}
|
|
epd = get_endpoint(hostif, 2);
|
|
if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) {
|
|
dev_dbg(&umidi->dev->dev, "endpoint[2] isn't bulk output\n");
|
|
return -ENXIO;
|
|
}
|
|
if (endpoint->out_cables > 0x0001) {
|
|
epd = get_endpoint(hostif, 4);
|
|
if (!usb_endpoint_dir_out(epd) ||
|
|
!usb_endpoint_xfer_bulk(epd)) {
|
|
dev_dbg(&umidi->dev->dev,
|
|
"endpoint[4] isn't bulk output\n");
|
|
return -ENXIO;
|
|
}
|
|
}
|
|
|
|
ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
ep_info.out_interval = 0;
|
|
ep_info.out_cables = endpoint->out_cables & 0x5555;
|
|
err = snd_usbmidi_out_endpoint_create(umidi, &ep_info,
|
|
&umidi->endpoints[0]);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
|
|
ep_info.in_cables = endpoint->in_cables;
|
|
err = snd_usbmidi_in_endpoint_create(umidi, &ep_info,
|
|
&umidi->endpoints[0]);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
if (endpoint->out_cables > 0x0001) {
|
|
ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress &
|
|
USB_ENDPOINT_NUMBER_MASK;
|
|
ep_info.out_cables = endpoint->out_cables & 0xaaaa;
|
|
err = snd_usbmidi_out_endpoint_create(umidi, &ep_info,
|
|
&umidi->endpoints[1]);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
for (cable = 0; cable < 0x10; ++cable) {
|
|
if (endpoint->out_cables & (1 << cable))
|
|
snd_usbmidi_init_substream(umidi,
|
|
SNDRV_RAWMIDI_STREAM_OUTPUT,
|
|
cable,
|
|
&umidi->endpoints[cable & 1].out->ports[cable].substream);
|
|
if (endpoint->in_cables & (1 << cable))
|
|
snd_usbmidi_init_substream(umidi,
|
|
SNDRV_RAWMIDI_STREAM_INPUT,
|
|
cable,
|
|
&umidi->endpoints[0].in->ports[cable].substream);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_rawmidi_global_ops snd_usbmidi_ops = {
|
|
.get_port_info = snd_usbmidi_get_port_info,
|
|
};
|
|
|
|
static int snd_usbmidi_create_rawmidi(struct snd_usb_midi *umidi,
|
|
int out_ports, int in_ports)
|
|
{
|
|
struct snd_rawmidi *rmidi;
|
|
int err;
|
|
|
|
err = snd_rawmidi_new(umidi->card, "USB MIDI",
|
|
umidi->next_midi_device++,
|
|
out_ports, in_ports, &rmidi);
|
|
if (err < 0)
|
|
return err;
|
|
strcpy(rmidi->name, umidi->card->shortname);
|
|
rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
|
|
SNDRV_RAWMIDI_INFO_INPUT |
|
|
SNDRV_RAWMIDI_INFO_DUPLEX;
|
|
rmidi->ops = &snd_usbmidi_ops;
|
|
rmidi->private_data = umidi;
|
|
rmidi->private_free = snd_usbmidi_rawmidi_free;
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
|
|
&snd_usbmidi_output_ops);
|
|
snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
|
|
&snd_usbmidi_input_ops);
|
|
|
|
umidi->rmidi = rmidi;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Temporarily stop input.
|
|
*/
|
|
void snd_usbmidi_input_stop(struct list_head *p)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
unsigned int i, j;
|
|
|
|
umidi = list_entry(p, struct snd_usb_midi, list);
|
|
if (!umidi->input_running)
|
|
return;
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
struct snd_usb_midi_endpoint *ep = &umidi->endpoints[i];
|
|
if (ep->in)
|
|
for (j = 0; j < INPUT_URBS; ++j)
|
|
usb_kill_urb(ep->in->urbs[j]);
|
|
}
|
|
umidi->input_running = 0;
|
|
}
|
|
EXPORT_SYMBOL(snd_usbmidi_input_stop);
|
|
|
|
static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint *ep)
|
|
{
|
|
unsigned int i;
|
|
|
|
if (!ep)
|
|
return;
|
|
for (i = 0; i < INPUT_URBS; ++i) {
|
|
struct urb *urb = ep->urbs[i];
|
|
urb->dev = ep->umidi->dev;
|
|
snd_usbmidi_submit_urb(urb, GFP_KERNEL);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Resume input after a call to snd_usbmidi_input_stop().
|
|
*/
|
|
void snd_usbmidi_input_start(struct list_head *p)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
int i;
|
|
|
|
umidi = list_entry(p, struct snd_usb_midi, list);
|
|
if (umidi->input_running || !umidi->opened[1])
|
|
return;
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
|
|
snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
|
|
umidi->input_running = 1;
|
|
}
|
|
EXPORT_SYMBOL(snd_usbmidi_input_start);
|
|
|
|
/*
|
|
* Prepare for suspend. Typically called from the USB suspend callback.
|
|
*/
|
|
void snd_usbmidi_suspend(struct list_head *p)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
|
|
umidi = list_entry(p, struct snd_usb_midi, list);
|
|
mutex_lock(&umidi->mutex);
|
|
snd_usbmidi_input_stop(p);
|
|
mutex_unlock(&umidi->mutex);
|
|
}
|
|
EXPORT_SYMBOL(snd_usbmidi_suspend);
|
|
|
|
/*
|
|
* Resume. Typically called from the USB resume callback.
|
|
*/
|
|
void snd_usbmidi_resume(struct list_head *p)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
|
|
umidi = list_entry(p, struct snd_usb_midi, list);
|
|
mutex_lock(&umidi->mutex);
|
|
snd_usbmidi_input_start(p);
|
|
mutex_unlock(&umidi->mutex);
|
|
}
|
|
EXPORT_SYMBOL(snd_usbmidi_resume);
|
|
|
|
/*
|
|
* Creates and registers everything needed for a MIDI streaming interface.
|
|
*/
|
|
int __snd_usbmidi_create(struct snd_card *card,
|
|
struct usb_interface *iface,
|
|
struct list_head *midi_list,
|
|
const struct snd_usb_audio_quirk *quirk,
|
|
unsigned int usb_id)
|
|
{
|
|
struct snd_usb_midi *umidi;
|
|
struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
|
|
int out_ports, in_ports;
|
|
int i, err;
|
|
|
|
umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
|
|
if (!umidi)
|
|
return -ENOMEM;
|
|
umidi->dev = interface_to_usbdev(iface);
|
|
umidi->card = card;
|
|
umidi->iface = iface;
|
|
umidi->quirk = quirk;
|
|
umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
|
|
spin_lock_init(&umidi->disc_lock);
|
|
init_rwsem(&umidi->disc_rwsem);
|
|
mutex_init(&umidi->mutex);
|
|
if (!usb_id)
|
|
usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor),
|
|
le16_to_cpu(umidi->dev->descriptor.idProduct));
|
|
umidi->usb_id = usb_id;
|
|
timer_setup(&umidi->error_timer, snd_usbmidi_error_timer, 0);
|
|
|
|
/* detect the endpoint(s) to use */
|
|
memset(endpoints, 0, sizeof(endpoints));
|
|
switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
|
|
case QUIRK_MIDI_STANDARD_INTERFACE:
|
|
err = snd_usbmidi_get_ms_info(umidi, endpoints);
|
|
if (umidi->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
|
|
umidi->usb_protocol_ops =
|
|
&snd_usbmidi_maudio_broken_running_status_ops;
|
|
break;
|
|
case QUIRK_MIDI_US122L:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_122l_ops;
|
|
/* fall through */
|
|
case QUIRK_MIDI_FIXED_ENDPOINT:
|
|
memcpy(&endpoints[0], quirk->data,
|
|
sizeof(struct snd_usb_midi_endpoint_info));
|
|
err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
|
|
break;
|
|
case QUIRK_MIDI_YAMAHA:
|
|
err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
|
|
break;
|
|
case QUIRK_MIDI_ROLAND:
|
|
err = snd_usbmidi_detect_roland(umidi, &endpoints[0]);
|
|
break;
|
|
case QUIRK_MIDI_MIDIMAN:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
|
|
memcpy(&endpoints[0], quirk->data,
|
|
sizeof(struct snd_usb_midi_endpoint_info));
|
|
err = 0;
|
|
break;
|
|
case QUIRK_MIDI_NOVATION:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
break;
|
|
case QUIRK_MIDI_RAW_BYTES:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
|
|
/*
|
|
* Interface 1 contains isochronous endpoints, but with the same
|
|
* numbers as in interface 0. Since it is interface 1 that the
|
|
* USB core has most recently seen, these descriptors are now
|
|
* associated with the endpoint numbers. This will foul up our
|
|
* attempts to submit bulk/interrupt URBs to the endpoints in
|
|
* interface 0, so we have to make sure that the USB core looks
|
|
* again at interface 0 by calling usb_set_interface() on it.
|
|
*/
|
|
if (umidi->usb_id == USB_ID(0x07fd, 0x0001)) /* MOTU Fastlane */
|
|
usb_set_interface(umidi->dev, 0, 0);
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
break;
|
|
case QUIRK_MIDI_EMAGIC:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
|
|
memcpy(&endpoints[0], quirk->data,
|
|
sizeof(struct snd_usb_midi_endpoint_info));
|
|
err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
|
|
break;
|
|
case QUIRK_MIDI_CME:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
break;
|
|
case QUIRK_MIDI_AKAI:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_akai_ops;
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
/* endpoint 1 is input-only */
|
|
endpoints[1].out_cables = 0;
|
|
break;
|
|
case QUIRK_MIDI_FTDI:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_ftdi_ops;
|
|
|
|
/* set baud rate to 31250 (48 MHz / 16 / 96) */
|
|
err = usb_control_msg(umidi->dev, usb_sndctrlpipe(umidi->dev, 0),
|
|
3, 0x40, 0x60, 0, NULL, 0, 1000);
|
|
if (err < 0)
|
|
break;
|
|
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
break;
|
|
case QUIRK_MIDI_CH345:
|
|
umidi->usb_protocol_ops = &snd_usbmidi_ch345_broken_sysex_ops;
|
|
err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
|
|
break;
|
|
default:
|
|
dev_err(&umidi->dev->dev, "invalid quirk type %d\n",
|
|
quirk->type);
|
|
err = -ENXIO;
|
|
break;
|
|
}
|
|
if (err < 0)
|
|
goto free_midi;
|
|
|
|
/* create rawmidi device */
|
|
out_ports = 0;
|
|
in_ports = 0;
|
|
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
|
|
out_ports += hweight16(endpoints[i].out_cables);
|
|
in_ports += hweight16(endpoints[i].in_cables);
|
|
}
|
|
err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
|
|
if (err < 0)
|
|
goto free_midi;
|
|
|
|
/* create endpoint/port structures */
|
|
if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
|
|
err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
|
|
else
|
|
err = snd_usbmidi_create_endpoints(umidi, endpoints);
|
|
if (err < 0)
|
|
goto exit;
|
|
|
|
usb_autopm_get_interface_no_resume(umidi->iface);
|
|
|
|
list_add_tail(&umidi->list, midi_list);
|
|
return 0;
|
|
|
|
free_midi:
|
|
kfree(umidi);
|
|
exit:
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL(__snd_usbmidi_create);
|