diff options
Diffstat (limited to 'sound/usb/usbmidi.c')
| -rw-r--r-- | sound/usb/usbmidi.c | 2080 |
1 files changed, 0 insertions, 2080 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c deleted file mode 100644 index 9e28b20cb2ce..000000000000 --- a/sound/usb/usbmidi.c +++ /dev/null @@ -1,2080 +0,0 @@ -/* - * usbmidi.c - ALSA USB MIDI driver - * - * Copyright (c) 2002-2009 Clemens Ladisch - * All rights reserved. - * - * Based on the OSS usb-midi driver by NAGANO Daisuke, - * NetBSD's umidi driver by Takuya SHIOZAKI, - * the "USB Device Class Definition for MIDI Devices" by Roland - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * Alternatively, this software may be distributed and/or modified under the - * terms of the GNU General Public License as published by the Free Software - * Foundation; either version 2 of the License, or (at your option) any later - * version. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/bitops.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/timer.h> -#include <linux/usb.h> -#include <linux/wait.h> -#include <linux/usb/audio.h> - -#include <sound/core.h> -#include <sound/control.h> -#include <sound/rawmidi.h> -#include <sound/asequencer.h> -#include "usbaudio.h" - - -/* - * define this to log all USB packets - */ -/* #define DUMP_PACKETS */ - -/* - * how long to wait after some USB errors, so that khubd can disconnect() us - * without too many spurious errors - */ -#define ERROR_DELAY_JIFFIES (HZ / 10) - -#define OUTPUT_URBS 7 -#define INPUT_URBS 7 - - -MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); -MODULE_DESCRIPTION("USB Audio/MIDI helper module"); -MODULE_LICENSE("Dual BSD/GPL"); - - -struct usb_ms_header_descriptor { - __u8 bLength; - __u8 bDescriptorType; - __u8 bDescriptorSubtype; - __u8 bcdMSC[2]; - __le16 wTotalLength; -} __attribute__ ((packed)); - -struct usb_ms_endpoint_descriptor { - __u8 bLength; - __u8 bDescriptorType; - __u8 bDescriptorSubtype; - __u8 bNumEmbMIDIJack; - __u8 baAssocJackID[0]; -} __attribute__ ((packed)); - -struct snd_usb_midi_in_endpoint; -struct snd_usb_midi_out_endpoint; -struct snd_usb_midi_endpoint; - -struct usb_protocol_ops { - void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int); - void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb); - void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); - void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*); - void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*); -}; - -struct snd_usb_midi { - struct usb_device *dev; - struct snd_card *card; - struct usb_interface *iface; - const struct snd_usb_audio_quirk *quirk; - struct snd_rawmidi *rmidi; - struct usb_protocol_ops* usb_protocol_ops; - struct list_head list; - struct timer_list error_timer; - spinlock_t disc_lock; - struct mutex mutex; - u32 usb_id; - int next_midi_device; - - struct snd_usb_midi_endpoint { - struct snd_usb_midi_out_endpoint *out; - struct snd_usb_midi_in_endpoint *in; - } endpoints[MIDI_MAX_ENDPOINTS]; - unsigned long input_triggered; - unsigned int opened; - unsigned char disconnected; - - struct snd_kcontrol *roland_load_ctl; -}; - -struct snd_usb_midi_out_endpoint { - struct snd_usb_midi* umidi; - struct out_urb_context { - struct urb *urb; - struct snd_usb_midi_out_endpoint *ep; - } urbs[OUTPUT_URBS]; - unsigned int active_urbs; - unsigned int drain_urbs; - int max_transfer; /* size of urb buffer */ - struct tasklet_struct tasklet; - unsigned int next_urb; - spinlock_t buffer_lock; - - struct usbmidi_out_port { - struct snd_usb_midi_out_endpoint* ep; - struct snd_rawmidi_substream *substream; - int active; - uint8_t cable; /* cable number << 4 */ - uint8_t state; -#define STATE_UNKNOWN 0 -#define STATE_1PARAM 1 -#define STATE_2PARAM_1 2 -#define STATE_2PARAM_2 3 -#define STATE_SYSEX_0 4 -#define STATE_SYSEX_1 5 -#define STATE_SYSEX_2 6 - uint8_t data[2]; - } ports[0x10]; - int current_port; - - wait_queue_head_t drain_wait; -}; - -struct snd_usb_midi_in_endpoint { - struct snd_usb_midi* umidi; - struct urb* urbs[INPUT_URBS]; - struct usbmidi_in_port { - struct snd_rawmidi_substream *substream; - u8 running_status_length; - } ports[0x10]; - u8 seen_f5; - u8 error_resubmit; - int current_port; -}; - -static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep); - -static const uint8_t snd_usbmidi_cin_length[] = { - 0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1 -}; - -/* - * Submits the URB, with error handling. - */ -static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags) -{ - int err = usb_submit_urb(urb, flags); - if (err < 0 && err != -ENODEV) - snd_printk(KERN_ERR "usb_submit_urb: %d\n", err); - return err; -} - -/* - * Error handling for URB completion functions. - */ -static int snd_usbmidi_urb_error(int status) -{ - switch (status) { - /* manually unlinked, or device gone */ - case -ENOENT: - case -ECONNRESET: - case -ESHUTDOWN: - case -ENODEV: - return -ENODEV; - /* errors that might occur during unplugging */ - case -EPROTO: - case -ETIME: - case -EILSEQ: - return -EIO; - default: - snd_printk(KERN_ERR "urb status %d\n", status); - return 0; /* continue */ - } -} - -/* - * Receives a chunk of MIDI data. - */ -static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx, - uint8_t* data, int length) -{ - struct usbmidi_in_port* port = &ep->ports[portidx]; - - if (!port->substream) { - snd_printd("unexpected port %d!\n", portidx); - return; - } - if (!test_bit(port->substream->number, &ep->umidi->input_triggered)) - return; - snd_rawmidi_receive(port->substream, data, length); -} - -#ifdef DUMP_PACKETS -static void dump_urb(const char *type, const u8 *data, int length) -{ - snd_printk(KERN_DEBUG "%s packet: [", type); - for (; length > 0; ++data, --length) - printk(" %02x", *data); - printk(" ]\n"); -} -#else -#define dump_urb(type, data, length) /* nothing */ -#endif - -/* - * Processes the data read from the device. - */ -static void snd_usbmidi_in_urb_complete(struct urb* urb) -{ - struct snd_usb_midi_in_endpoint* ep = urb->context; - - if (urb->status == 0) { - dump_urb("received", urb->transfer_buffer, urb->actual_length); - ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, - urb->actual_length); - } else { - int err = snd_usbmidi_urb_error(urb->status); - if (err < 0) { - if (err != -ENODEV) { - ep->error_resubmit = 1; - mod_timer(&ep->umidi->error_timer, - jiffies + ERROR_DELAY_JIFFIES); - } - return; - } - } - - urb->dev = ep->umidi->dev; - snd_usbmidi_submit_urb(urb, GFP_ATOMIC); -} - -static void snd_usbmidi_out_urb_complete(struct urb* urb) -{ - struct out_urb_context *context = urb->context; - struct snd_usb_midi_out_endpoint* ep = context->ep; - unsigned int urb_index; - - spin_lock(&ep->buffer_lock); - urb_index = context - ep->urbs; - ep->active_urbs &= ~(1 << urb_index); - if (unlikely(ep->drain_urbs)) { - ep->drain_urbs &= ~(1 << urb_index); - wake_up(&ep->drain_wait); - } - spin_unlock(&ep->buffer_lock); - if (urb->status < 0) { - int err = snd_usbmidi_urb_error(urb->status); - if (err < 0) { - if (err != -ENODEV) - mod_timer(&ep->umidi->error_timer, - jiffies + ERROR_DELAY_JIFFIES); - return; - } - } - snd_usbmidi_do_output(ep); -} - -/* - * This is called when some data should be transferred to the device - * (from one or more substreams). - */ -static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep) -{ - unsigned int urb_index; - struct urb* urb; - unsigned long flags; - - spin_lock_irqsave(&ep->buffer_lock, flags); - if (ep->umidi->disconnected) { - spin_unlock_irqrestore(&ep->buffer_lock, flags); - return; - } - - urb_index = ep->next_urb; - for (;;) { - if (!(ep->active_urbs & (1 << urb_index))) { - urb = ep->urbs[urb_index].urb; - urb->transfer_buffer_length = 0; - ep->umidi->usb_protocol_ops->output(ep, urb); - if (urb->transfer_buffer_length == 0) - break; - - dump_urb("sending", urb->transfer_buffer, - urb->transfer_buffer_length); - urb->dev = ep->umidi->dev; - if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) - break; - ep->active_urbs |= 1 << urb_index; - } - if (++urb_index >= OUTPUT_URBS) - urb_index = 0; - if (urb_index == ep->next_urb) - break; - } - ep->next_urb = urb_index; - spin_unlock_irqrestore(&ep->buffer_lock, flags); -} - -static void snd_usbmidi_out_tasklet(unsigned long data) -{ - struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data; - - snd_usbmidi_do_output(ep); -} - -/* called after transfers had been interrupted due to some USB error */ -static void snd_usbmidi_error_timer(unsigned long data) -{ - struct snd_usb_midi *umidi = (struct snd_usb_midi *)data; - unsigned int i, j; - - spin_lock(&umidi->disc_lock); - if (umidi->disconnected) { - spin_unlock(&umidi->disc_lock); - return; - } - for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { - struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; - if (in && in->error_resubmit) { - in->error_resubmit = 0; - for (j = 0; j < INPUT_URBS; ++j) { - in->urbs[j]->dev = umidi->dev; - snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC); - } - } - if (umidi->endpoints[i].out) - snd_usbmidi_do_output(umidi->endpoints[i].out); - } - spin_unlock(&umidi->disc_lock); -} - -/* helper function to send static data that may not DMA-able */ -static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep, - const void *data, int len) -{ - int err = 0; - void *buf = kmemdup(data, len, GFP_KERNEL); - if (!buf) - return -ENOMEM; - dump_urb("sending", buf, len); - if (ep->urbs[0].urb) - err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe, - buf, len, NULL, 250); - kfree(buf); - return err; -} - -/* - * Standard USB MIDI protocol: see the spec. - * Midiman protocol: like the standard protocol, but the control byte is the - * fourth byte in each packet, and uses length instead of CIN. - */ - -static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep, - uint8_t* buffer, int buffer_length) -{ - int i; - - for (i = 0; i + 3 < buffer_length; i += 4) - if (buffer[i] != 0) { - int cable = buffer[i] >> 4; - int length = snd_usbmidi_cin_length[buffer[i] & 0x0f]; - snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); - } -} - -static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep, - uint8_t* buffer, int buffer_length) -{ - int i; - - for (i = 0; i + 3 < buffer_length; i += 4) - if (buffer[i + 3] != 0) { - int port = buffer[i + 3] >> 4; - int length = buffer[i + 3] & 3; - snd_usbmidi_input_data(ep, port, &buffer[i], length); - } -} - -/* - * Buggy M-Audio device: running status on input results in a packet that has - * the data bytes but not the status byte and that is marked with CIN 4. - */ -static void snd_usbmidi_maudio_broken_running_status_input( - struct snd_usb_midi_in_endpoint* ep, - uint8_t* buffer, int buffer_length) -{ - int i; - - for (i = 0; i + 3 < buffer_length; i += 4) - if (buffer[i] != 0) { - int cable = buffer[i] >> 4; - u8 cin = buffer[i] & 0x0f; - struct usbmidi_in_port *port = &ep->ports[cable]; - int length; - - length = snd_usbmidi_cin_length[cin]; - if (cin == 0xf && buffer[i + 1] >= 0xf8) - ; /* realtime msg: no running status change */ - else if (cin >= 0x8 && cin <= 0xe) - /* channel msg */ - port->running_status_length = length - 1; - else if (cin == 0x4 && - port->running_status_length != 0 && - buffer[i + 1] < 0x80) - /* CIN 4 that is not a SysEx */ - length = port->running_status_length; - else - /* - * All other msgs cannot begin running status. - * (A channel msg sent as two or three CIN 0xF - * packets could in theory, but this device - * doesn't use this format.) - */ - port->running_status_length = 0; - snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length); - } -} - -/* - * 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 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 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 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 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, -}; - -/* - * 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 struct usb_protocol_ops snd_usbmidi_novation_ops = { - .input = snd_usbmidi_novation_input, - .output = snd_usbmidi_novation_output, -}; - -/* - * "raw" protocol: used by the MOTU FastLane. - */ - -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 struct usb_protocol_ops snd_usbmidi_raw_ops = { - .input = snd_usbmidi_raw_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; - count = snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_HIGH ? 1 : 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, 9 - count); - urb->transfer_buffer_length = count; -} - -static 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 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 void substream_open(struct snd_rawmidi_substream *substream, int open) -{ - struct snd_usb_midi* umidi = substream->rmidi->private_data; - struct snd_kcontrol *ctl; - - mutex_lock(&umidi->mutex); - if (open) { - if (umidi->opened++ == 0 && 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); - } - } else { - if (--umidi->opened == 0 && 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); -} - -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; - substream_open(substream, 1); - return 0; -} - -static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream) -{ - substream_open(substream, 0); - return 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 */ - while (!snd_rawmidi_transmit_empty(substream)) - snd_rawmidi_transmit_ack(substream, 1); - 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) -{ - substream_open(substream, 1); - return 0; -} - -static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream) -{ - substream_open(substream, 0); - return 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 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 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_buffer_free(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; - - 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]) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; - } - } - 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_buffer_alloc(umidi->dev, length, GFP_KERNEL, - &ep->urbs[i]->transfer_dma); - if (!buffer) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; - } - 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; - } - - rep->in = ep; - return 0; -} - -/* - * 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; - - 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) { - snd_usbmidi_out_endpoint_delete(ep); - return -ENOMEM; - } - 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(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" */ - ep->max_transfer = 4; - break; - } - for (i = 0; i < OUTPUT_URBS; ++i) { - buffer = usb_buffer_alloc(umidi->dev, - ep->max_transfer, GFP_KERNEL, - &ep->urbs[i].urb->transfer_dma); - if (!buffer) { - snd_usbmidi_out_endpoint_delete(ep); - return -ENOMEM; - } - 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]); - 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; -} - -/* - * 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 - */ - spin_lock_irq(&umidi->disc_lock); - umidi->disconnected = 1; - spin_unlock_irq(&umidi->disc_lock); - 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); -} - -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 list_head* list; - - list_for_each(list, &umidi->rmidi->streams[stream].substreams) { - struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, 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 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) - /* 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"), - /* Edirol UM-3EX */ - CONTROL_PORT(0x0582, 0x009a, 3, "%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"), - /* 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) { - snd_printd(KERN_ERR "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; - } - } - } - snd_printdd(KERN_INFO "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) - snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n", - ms_header->bcdMSC[1], ms_header->bcdMSC[0]); - else - snd_printk(KERN_WARNING "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) { - snd_printk(KERN_WARNING "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; - snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n", - ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack); - } else { - if (endpoints[epidx].in_ep) { - if (++epidx >= MIDI_MAX_ENDPOINTS) { - snd_printk(KERN_WARNING "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; - snd_printdd(KERN_INFO "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" }; - - info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; - info->count = 1; - info->value.enumerated.items = 2; - if (info->value.enumerated.item > 1) - info->value.enumerated.item = 1; - strcpy(info->value.enumerated.name, names[info->value.enumerated.item]); - return 0; -} - -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 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 (intfd->bNumEndpoints != 2 || - (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK || - (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT) - return; - - snd_printdd(KERN_INFO "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); -} - -/* - * 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)) { - snd_printdd(KERN_ERR "not enough endpoints\n"); - return -ENOENT; - } - - epd = get_endpoint(hostif, 0); - if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) { - snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n"); - return -ENXIO; - } - epd = get_endpoint(hostif, 2); - if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) { - snd_printdd(KERN_ERR "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)) { - snd_printdd(KERN_ERR "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 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); - 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]); - } -} - -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); - for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) - snd_usbmidi_input_start_ep(umidi->endpoints[i].in); -} - -/* - * 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) -{ - 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; - init_timer(&umidi->error_timer); - spin_lock_init(&umidi->disc_lock); - mutex_init(&umidi->mutex); - umidi->usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor), - le16_to_cpu(umidi->dev->descriptor.idProduct)); - umidi->error_timer.function = snd_usbmidi_error_timer; - umidi->error_timer.data = (unsigned long)umidi; - - /* 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_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_FASTLANE: - 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. - */ - 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; - default: - snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); - err = -ENXIO; - break; - } - if (err < 0) { - kfree(umidi); - return err; - } - - /* 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) { - kfree(umidi); - return err; - } - - /* 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) { - snd_usbmidi_free(umidi); - return err; - } - - list_add_tail(&umidi->list, midi_list); - - for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) - snd_usbmidi_input_start_ep(umidi->endpoints[i].in); - return 0; -} - -EXPORT_SYMBOL(snd_usbmidi_create); -EXPORT_SYMBOL(snd_usbmidi_input_stop); -EXPORT_SYMBOL(snd_usbmidi_input_start); -EXPORT_SYMBOL(snd_usbmidi_disconnect); |