| /* |
| * 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 <linux/module.h> |
| |
| #include <sound/core.h> |
| #include <sound/control.h> |
| #include <sound/rawmidi.h> |
| #include <sound/asequencer.h> |
| #include "usbaudio.h" |
| #include "midi.h" |
| #include "power.h" |
| #include "helper.h" |
| |
| /* |
| * define this to log all USB packets |
| */ |
| /* #define DUMP_PACKETS */ |
| |
| /* |
| * how long to wait after some USB errors, so that hub_wq 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[]; |
| } __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; |
| const struct usb_protocol_ops *usb_protocol_ops; |
| struct list_head list; |
| struct timer_list error_timer; |
| spinlock_t disc_lock; |
| struct rw_semaphore disc_rwsem; |
| 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[2]; |
| unsigned char disconnected; |
| unsigned char input_running; |
| |
| 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; |
| bool in_sysex; |
| u8 last_cin; |
| 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) |
| dev_err(&urb->dev->dev, "usb_submit_urb: %d\n", err); |
| return err; |
| } |
| |
| /* |
| * Error handling for URB completion functions. |
| */ |
| static int snd_usbmidi_urb_error(const struct urb *urb) |
| { |
| switch (urb->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: |
| dev_err(&urb->dev->dev, "urb status %d\n", urb->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) { |
| dev_dbg(&ep->umidi->dev->dev, "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(KERN_CONT " %02x", *data); |
| printk(KERN_CONT " ]\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); |
| 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; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&ep->buffer_lock, flags); |
| 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_irqrestore(&ep->buffer_lock, flags); |
| if (urb->status < 0) { |
| int err = snd_usbmidi_urb_error(urb); |
| 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(struct timer_list *t) |
| { |
| struct snd_usb_midi *umidi = from_timer(umidi, t, error_timer); |
| 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) { |
| if (atomic_read(&in->urbs[j]->use_count)) |
| continue; |
| 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); |
| } |
| } |
| |
| /* |
| * QinHeng CH345 is buggy: every second packet inside a SysEx has not CIN 4 |
| * but the previously seen CIN, but still with three data bytes. |
| */ |
| static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep, |
| uint8_t *buffer, int buffer_length) |
| { |
| unsigned int i, cin, length; |
| |
| for (i = 0; i + 3 < buffer_length; i += 4) { |
| if (buffer[i] == 0 && i > 0) |
| break; |
| cin = buffer[i] & 0x0f; |
| if (ep->in_sysex && |
| cin == ep->last_cin && |
| (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); |
| |
| del_timer_sync(&umidi->error_timer); |
| |
| 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; |
| } |
| } |
| } |
| 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; |
| } |
| |
| static struct usb_ms_endpoint_descriptor *find_usb_ms_endpoint_descriptor( |
| struct usb_host_endpoint *hostep) |
| { |
| unsigned char *extra = hostep->extra; |
| int extralen = hostep->extralen; |
| |
| while (extralen > 3) { |
| struct usb_ms_endpoint_descriptor *ms_ep = |
| (struct usb_ms_endpoint_descriptor *)extra; |
| |
| if (ms_ep->bLength > 3 && |
| ms_ep->bDescriptorType == USB_DT_CS_ENDPOINT && |
| ms_ep->bDescriptorSubtype == UAC_MS_GENERAL) |
| return ms_ep; |
| if (!extra[0]) |
| break; |
| extralen -= extra[0]; |
| extra += extra[0]; |
| } |
| return NULL; |
| } |
| |
| /* |
| * 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 = find_usb_ms_endpoint_descriptor(hostep); |
| if (!ms_ep) |
| 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 *umidi, |
| struct snd_usb_midi_in_endpoint *ep) |
| { |
| unsigned int i; |
| unsigned long flags; |
| |
| if (!ep) |
| return; |
| for (i = 0; i < INPUT_URBS; ++i) { |
| struct urb *urb = ep->urbs[i]; |
| spin_lock_irqsave(&umidi->disc_lock, flags); |
| if (!atomic_read(&urb->use_count)) { |
| urb->dev = ep->umidi->dev; |
| snd_usbmidi_submit_urb(urb, GFP_ATOMIC); |
| } |
| spin_unlock_irqrestore(&umidi->disc_lock, flags); |
| } |
| } |
| |
| /* |
| * 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, 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; |
| fallthrough; |
| 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); |