/*
* usbmidi.c - ALSA USB MIDI driver
*
- * Copyright (c) 2002-2004 Clemens Ladisch
+ * Copyright (c) 2002-2005 Clemens Ladisch
* All rights reserved.
*
* Based on the OSS usb-midi driver by NAGANO Daisuke,
#include <sound/driver.h>
#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 <sound/rawmidi.h>
#include "usbaudio.h"
+
+/*
+ * define this to log all USB packets
+ */
+/* #define DUMP_PACKETS */
+
+
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_DESCRIPTION("USB Audio/MIDI helper module");
MODULE_LICENSE("Dual BSD/GPL");
typedef struct usbmidi_out_port usbmidi_out_port_t;
typedef struct usbmidi_in_port usbmidi_in_port_t;
+struct usb_protocol_ops {
+ void (*input)(snd_usb_midi_in_endpoint_t*, uint8_t*, int);
+ void (*output)(snd_usb_midi_out_endpoint_t*);
+ void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
+ void (*init_out_endpoint)(snd_usb_midi_out_endpoint_t*);
+ void (*finish_out_endpoint)(snd_usb_midi_out_endpoint_t*);
+};
+
struct snd_usb_midi {
snd_usb_audio_t *chip;
struct usb_interface *iface;
const snd_usb_audio_quirk_t *quirk;
snd_rawmidi_t* rmidi;
+ struct usb_protocol_ops* usb_protocol_ops;
struct list_head list;
struct snd_usb_midi_endpoint {
snd_usb_midi_out_endpoint_t *out;
snd_usb_midi_in_endpoint_t *in;
} endpoints[MIDI_MAX_ENDPOINTS];
+ unsigned long input_triggered;
};
struct snd_usb_midi_out_endpoint {
snd_usb_midi_t* umidi;
struct urb* urb;
+ int urb_active;
int max_transfer; /* size of urb buffer */
struct tasklet_struct tasklet;
#define STATE_SYSEX_2 6
uint8_t data[2];
} ports[0x10];
+ int current_port;
};
struct snd_usb_midi_in_endpoint {
struct usbmidi_in_port {
snd_rawmidi_substream_t* substream;
} ports[0x10];
+ int seen_f5;
+ int current_port;
};
static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep);
}
/*
- * Receives a USB MIDI packet.
+ * Receives a chunk of MIDI data.
*/
-static void snd_usbmidi_input_packet(snd_usb_midi_in_endpoint_t* ep,
- uint8_t packet[4])
+static void snd_usbmidi_input_data(snd_usb_midi_in_endpoint_t* ep, int portidx,
+ uint8_t* data, int length)
{
- int cable = packet[0] >> 4;
- usbmidi_in_port_t* port = &ep->ports[cable];
+ usbmidi_in_port_t* port = &ep->ports[portidx];
if (!port->substream) {
- snd_printd("unexpected port %d!\n", cable);
+ snd_printd("unexpected port %d!\n", portidx);
return;
}
- if (!port->substream->runtime ||
- !port->substream->runtime->trigger)
+ if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
return;
- snd_rawmidi_receive(port->substream, &packet[1],
- snd_usbmidi_cin_length[packet[0] & 0x0f]);
+ 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.
snd_usb_midi_in_endpoint_t* ep = urb->context;
if (urb->status == 0) {
- uint8_t* buffer = (uint8_t*)ep->urb->transfer_buffer;
- int i;
-
- for (i = 0; i + 4 <= urb->actual_length; i += 4)
- if (buffer[i] != 0)
- snd_usbmidi_input_packet(ep, &buffer[i]);
+ dump_urb("received", urb->transfer_buffer, urb->actual_length);
+ ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
+ urb->actual_length);
} else {
if (snd_usbmidi_urb_error(urb->status) < 0)
return;
}
}
+static void snd_usbmidi_out_urb_complete(struct urb* urb, struct pt_regs *regs)
+{
+ snd_usb_midi_out_endpoint_t* ep = urb->context;
+
+ spin_lock(&ep->buffer_lock);
+ ep->urb_active = 0;
+ spin_unlock(&ep->buffer_lock);
+ if (urb->status < 0) {
+ if (snd_usbmidi_urb_error(urb->status) < 0)
+ return;
+ }
+ snd_usbmidi_do_output(ep);
+}
+
/*
- * Converts the data read from a Midiman device to standard USB MIDI packets.
+ * This is called when some data should be transferred to the device
+ * (from one or more substreams).
*/
-static void snd_usbmidi_in_midiman_complete(struct urb* urb, struct pt_regs *regs)
+static void snd_usbmidi_do_output(snd_usb_midi_out_endpoint_t* ep)
{
- if (urb->status == 0) {
- uint8_t* buffer = (uint8_t*)urb->transfer_buffer;
- int i;
+ struct urb* urb = ep->urb;
+ unsigned long flags;
- for (i = 0; i + 4 <= urb->actual_length; i += 4) {
- if (buffer[i + 3] != 0) {
- /*
- * snd_usbmidi_input_packet() doesn't check the
- * contents of the message, so we simply use
- * some random CIN with the desired length.
- */
- static const uint8_t cin[4] = {
- 0x0, 0xf, 0x2, 0x3
- };
- uint8_t ctl = buffer[i + 3];
- buffer[i + 3] = buffer[i + 2];
- buffer[i + 2] = buffer[i + 1];
- buffer[i + 1] = buffer[i + 0];
- buffer[i + 0] = (ctl & 0xf0) | cin[ctl & 3];
- } else {
- buffer[i + 0] = 0;
- }
- }
+ spin_lock_irqsave(&ep->buffer_lock, flags);
+ if (ep->urb_active || ep->umidi->chip->shutdown) {
+ spin_unlock_irqrestore(&ep->buffer_lock, flags);
+ return;
+ }
+
+ urb->transfer_buffer_length = 0;
+ ep->umidi->usb_protocol_ops->output(ep);
+
+ if (urb->transfer_buffer_length > 0) {
+ dump_urb("sending", urb->transfer_buffer,
+ urb->transfer_buffer_length);
+ urb->dev = ep->umidi->chip->dev;
+ ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0;
}
- snd_usbmidi_in_urb_complete(urb, regs);
+ spin_unlock_irqrestore(&ep->buffer_lock, flags);
}
-static void snd_usbmidi_out_urb_complete(struct urb* urb, struct pt_regs *regs)
+static void snd_usbmidi_out_tasklet(unsigned long data)
{
- snd_usb_midi_out_endpoint_t* ep = urb->context;
+ snd_usb_midi_out_endpoint_t* ep = (snd_usb_midi_out_endpoint_t *) data;
- if (urb->status < 0) {
- if (snd_usbmidi_urb_error(urb->status) < 0)
- return;
- }
snd_usbmidi_do_output(ep);
}
+/* helper function to send static data that may not DMA-able */
+static int send_bulk_static_data(snd_usb_midi_out_endpoint_t* ep,
+ const void *data, int len)
+{
+ int err;
+ void *buf = kmalloc(len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+ memcpy(buf, data, len);
+ dump_urb("sending", buf, len);
+ err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len,
+ NULL, 250);
+ kfree(buf);
+ return err;
+}
+
/*
- * Converts standard USB MIDI packets to what Midman devices expect.
+ * 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_convert_to_midiman(struct urb* urb)
+
+static void snd_usbmidi_standard_input(snd_usb_midi_in_endpoint_t* ep,
+ uint8_t* buffer, int buffer_length)
{
- uint8_t* buffer = (uint8_t*)urb->transfer_buffer;
int i;
- for (i = 0; i + 4 <= urb->transfer_buffer_length; i += 4) {
- uint8_t cin = buffer[i];
- buffer[i + 0] = buffer[i + 1];
- buffer[i + 1] = buffer[i + 2];
- buffer[i + 2] = buffer[i + 3];
- buffer[i + 3] = (cin & 0xf0) | snd_usbmidi_cin_length[cin & 0x0f];
- }
+ 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(snd_usb_midi_in_endpoint_t* 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);
+ }
}
/*
* Adds one USB MIDI packet to the output buffer.
*/
-static inline void output_packet(struct urb* urb,
- uint8_t p0, uint8_t p1, uint8_t p2, uint8_t p3)
+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;
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.
*/
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);
}
}
-/*
- * Moves data from one substream buffer to the URB transfer buffer.
- */
-static void snd_usbmidi_transmit(snd_usb_midi_out_endpoint_t* ep, int port_idx)
+static void snd_usbmidi_standard_output(snd_usb_midi_out_endpoint_t* ep)
{
struct urb* urb = ep->urb;
- usbmidi_out_port_t* port = &ep->ports[port_idx];
+ int p;
- while (urb->transfer_buffer_length < ep->max_transfer) {
- uint8_t b;
- if (snd_rawmidi_transmit_peek(port->substream, &b, 1) != 1) {
- port->active = 0;
- break;
+ /* FIXME: lower-numbered ports can starve higher-numbered ports */
+ for (p = 0; p < 0x10; ++p) {
+ usbmidi_out_port_t* 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);
}
- snd_usbmidi_transmit_byte(port, b, urb);
- snd_rawmidi_transmit_ack(port->substream, 1);
}
}
+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,
+};
+
/*
- * This is called when some data should be transferred to the device
- * (from one or more substreams).
+ * 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_do_output(snd_usb_midi_out_endpoint_t* ep)
+
+static void snd_usbmidi_novation_input(snd_usb_midi_in_endpoint_t* ep,
+ uint8_t* buffer, int buffer_length)
{
- int p;
- struct urb* urb = ep->urb;
- unsigned long flags;
+ if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
+ return;
+ snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
+}
- spin_lock_irqsave(&ep->buffer_lock, flags);
- if (urb->status == -EINPROGRESS || ep->umidi->chip->shutdown) {
- spin_unlock_irqrestore(&ep->buffer_lock, flags);
+static void snd_usbmidi_novation_output(snd_usb_midi_out_endpoint_t* ep)
+{
+ uint8_t* transfer_buffer;
+ int count;
+
+ if (!ep->ports[0].active)
+ return;
+ transfer_buffer = ep->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;
+ ep->urb->transfer_buffer_length = 2 + count;
+}
- urb->transfer_buffer_length = 0;
- for (p= 0; p < 0x10; ++p)
- if (ep->ports[p].active)
- snd_usbmidi_transmit(ep, p);
+static struct usb_protocol_ops snd_usbmidi_novation_ops = {
+ .input = snd_usbmidi_novation_input,
+ .output = snd_usbmidi_novation_output,
+};
- if (urb->transfer_buffer_length > 0) {
- if (ep->umidi->quirk && ep->umidi->quirk->type == QUIRK_MIDI_MIDIMAN)
- snd_usbmidi_convert_to_midiman(urb);
+/*
+ * Mark of the Unicorn USB MIDI protocol: raw MIDI.
+ */
- urb->dev = ep->umidi->chip->dev;
- snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
+static void snd_usbmidi_motu_input(snd_usb_midi_in_endpoint_t* ep,
+ uint8_t* buffer, int buffer_length)
+{
+ snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
+}
+
+static void snd_usbmidi_motu_output(snd_usb_midi_out_endpoint_t* ep)
+{
+ int count;
+
+ if (!ep->ports[0].active)
+ return;
+ count = snd_rawmidi_transmit(ep->ports[0].substream,
+ ep->urb->transfer_buffer,
+ ep->max_transfer);
+ if (count < 1) {
+ ep->ports[0].active = 0;
+ return;
}
- spin_unlock_irqrestore(&ep->buffer_lock, flags);
+ ep->urb->transfer_buffer_length = count;
}
-static void snd_usbmidi_out_tasklet(unsigned long data)
+static struct usb_protocol_ops snd_usbmidi_motu_ops = {
+ .input = snd_usbmidi_motu_input,
+ .output = snd_usbmidi_motu_output,
+};
+
+/*
+ * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
+ */
+
+static void snd_usbmidi_emagic_init_out(snd_usb_midi_out_endpoint_t* ep)
{
- snd_usb_midi_out_endpoint_t* ep = (snd_usb_midi_out_endpoint_t *) data;
+ 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));
+}
- snd_usbmidi_do_output(ep);
+static void snd_usbmidi_emagic_finish_out(snd_usb_midi_out_endpoint_t* 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(snd_usb_midi_in_endpoint_t* ep,
+ uint8_t* buffer, int buffer_length)
+{
+ /* ignore padding bytes at end of buffer */
+ while (buffer_length > 0 && buffer[buffer_length - 1] == 0xff)
+ --buffer_length;
+
+ /* handle F5 at end of last buffer */
+ if (ep->seen_f5)
+ goto switch_port;
+
+ while (buffer_length > 0) {
+ int i;
+
+ /* 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(snd_usb_midi_out_endpoint_t* ep)
+{
+ int port0 = ep->current_port;
+ uint8_t* buf = ep->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;
+ usbmidi_out_port_t* 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;
+ }
+ }
+ ep->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 int snd_usbmidi_output_open(snd_rawmidi_substream_t* substream)
{
snd_usb_midi_t* umidi = substream->rmidi->private_data;
static void snd_usbmidi_input_trigger(snd_rawmidi_substream_t* substream, int up)
{
+ snd_usb_midi_t* umidi = substream->rmidi->private_data;
+
+ if (up)
+ set_bit(substream->number, &umidi->input_triggered);
+ else
+ clear_bit(substream->number, &umidi->input_triggered);
}
static snd_rawmidi_ops_t snd_usbmidi_output_ops = {
kfree(ep);
}
-/*
- * For Roland devices, use the alternate setting which uses interrupt
- * transfers for input.
- */
-static struct usb_endpoint_descriptor* snd_usbmidi_get_int_epd(snd_usb_midi_t* umidi)
-{
- struct usb_interface* intf;
- struct usb_host_interface *hostif;
- struct usb_interface_descriptor* intfd;
-
- if (le16_to_cpu(umidi->chip->dev->descriptor.idVendor) != 0x0582)
- return NULL;
- intf = umidi->iface;
- if (!intf || intf->num_altsetting != 2)
- return NULL;
-
- hostif = &intf->altsetting[0];
- 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_BULK)
- return NULL;
-
- 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 NULL;
-
- snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
- intfd->bAlternateSetting);
- usb_set_interface(umidi->chip->dev, intfd->bInterfaceNumber,
- intfd->bAlternateSetting);
- return get_endpoint(hostif, 1);
-}
-
-static struct usb_endpoint_descriptor* snd_usbmidi_get_midiman_int_epd(snd_usb_midi_t* umidi)
-{
- struct usb_interface* intf = umidi->iface;
- struct usb_host_interface *hostif;
- struct usb_interface_descriptor *intfd;
- if (!intf)
- return NULL;
- hostif = &intf->altsetting[0];
- intfd = get_iface_desc(hostif);
- if (intfd->bNumEndpoints < 1)
- return NULL;
- return get_endpoint(hostif, 0);
-}
-
/*
* Creates an input endpoint.
*/
snd_usb_midi_endpoint_t* rep)
{
snd_usb_midi_in_endpoint_t* ep;
- struct usb_endpoint_descriptor* int_epd;
void* buffer;
unsigned int pipe;
int length;
return -ENOMEM;
ep->umidi = umidi;
- if (umidi->quirk && umidi->quirk->type == QUIRK_MIDI_MIDIMAN)
- int_epd = snd_usbmidi_get_midiman_int_epd(umidi);
- else
- int_epd = snd_usbmidi_get_int_epd(umidi);
-
ep->urb = usb_alloc_urb(0, GFP_KERNEL);
if (!ep->urb) {
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
}
- if (int_epd)
+ if (ep_info->in_interval)
pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep);
else
pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep);
snd_usbmidi_in_endpoint_delete(ep);
return -ENOMEM;
}
- if (int_epd)
+ if (ep_info->in_interval)
usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, length,
snd_usb_complete_callback(snd_usbmidi_in_urb_complete),
- ep, int_epd->bInterval);
+ ep, ep_info->in_interval);
else
usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, length,
snd_usb_complete_callback(snd_usbmidi_in_urb_complete),
return 0;
}
-static int snd_usbmidi_count_bits(uint16_t x)
+static unsigned int snd_usbmidi_count_bits(unsigned int x)
{
- int i, bits = 0;
+ unsigned int bits = 0;
- for (i = 0; i < 16; ++i)
- bits += (x & (1 << i)) != 0;
+ for (; x; x >>= 1)
+ bits += x & 1;
return bits;
}
snd_usbmidi_out_endpoint_delete(ep);
return -ENOMEM;
}
+ /* we never use interrupt output pipes */
pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep);
- ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1) & ~3;
+ ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1);
buffer = kmalloc(ep->max_transfer, GFP_KERNEL);
if (!buffer) {
snd_usbmidi_out_endpoint_delete(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;
}
umidi = list_entry(p, snd_usb_midi_t, list);
for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
snd_usb_midi_endpoint_t* ep = &umidi->endpoints[i];
- if (ep->out && ep->out->urb)
+ if (ep->out && ep->out->urb) {
usb_kill_urb(ep->out->urb);
+ if (umidi->usb_protocol_ops->finish_out_endpoint)
+ umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
+ }
if (ep->in && ep->in->urb)
usb_kill_urb(ep->in->urb);
}
/* M-Audio MidiSport 8x8 */
{0x0763, 0x1031, 8, "%s Control"},
{0x0763, 0x1033, 8, "%s Control"},
+ /* MOTU Fastlane */
+ {0x07fd, 0x0001, 0, "%s MIDI A"},
+ {0x07fd, 0x0001, 1, "%s MIDI B"},
+ /* Emagic Unitor8/AMT8/MT4 */
+ {0x086a, 0x0001, 8, "%s Broadcast"},
+ {0x086a, 0x0002, 8, "%s Broadcast"},
+ {0x086a, 0x0003, 4, "%s Broadcast"},
};
static void snd_usbmidi_init_substream(snd_usb_midi_t* umidi,
for (i = 0; i < intfd->bNumEndpoints; ++i) {
hostep = &hostif->endpoint[i];
ep = get_ep_desc(hostep);
- if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK)
+ if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
+ (ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
continue;
ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
if (hostep->extralen < 4 ||
}
}
endpoints[epidx].out_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+ endpoints[epidx].out_interval = ep->bInterval;
endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
}
}
endpoints[epidx].in_ep = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+ endpoints[epidx].in_interval = ep->bInterval;
endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
}
/*
- * If the endpoints aren't specified, use the first bulk endpoints in the
- * first alternate setting of the interface.
+ * On Roland devices, use the second alternate setting to be able to use
+ * the interrupt input endpoint.
*/
-static int snd_usbmidi_detect_endpoint(snd_usb_midi_t* umidi,
- snd_usb_midi_endpoint_info_t* endpoint)
+static void snd_usbmidi_switch_roland_altsetting(snd_usb_midi_t* 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->chip->dev, intfd->bInterfaceNumber,
+ intfd->bAlternateSetting);
+}
+
+/*
+ * Try to find any usable endpoints in the interface.
+ */
+static int snd_usbmidi_detect_endpoints(snd_usb_midi_t* umidi,
+ snd_usb_midi_endpoint_info_t* 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;
+ int i, out_eps = 0, in_eps = 0;
+
+ if (le16_to_cpu(umidi->chip->dev->descriptor.idVendor) == 0x0582)
+ snd_usbmidi_switch_roland_altsetting(umidi);
intf = umidi->iface;
if (!intf || intf->num_altsetting < 1)
return -ENOENT;
- hostif = intf->altsetting;
+ hostif = intf->cur_altsetting;
intfd = get_iface_desc(hostif);
- if (intfd->bNumEndpoints < 1)
- return -ENOENT;
for (i = 0; i < intfd->bNumEndpoints; ++i) {
epd = get_endpoint(hostif, i);
- if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK)
+ if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK &&
+ (epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
continue;
- if (!endpoint->out_ep && endpoint->out_cables &&
- (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
- endpoint->out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
- if (!endpoint->in_ep && endpoint->in_cables &&
- (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
- endpoint->in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if (out_eps < max_endpoints &&
+ (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT) {
+ endpoint[out_eps].out_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+ endpoint[out_eps].out_interval = epd->bInterval;
+ ++out_eps;
+ }
+ if (in_eps < max_endpoints &&
+ (epd->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN) {
+ endpoint[in_eps].in_ep = epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ if ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
+ endpoint[in_eps].in_interval = epd->bInterval;
+ ++in_eps;
+ }
}
- return 0;
+ return (out_eps || in_eps) ? 0 : -ENOENT;
+}
+
+/*
+ * Detects the endpoints for one-port-per-endpoint protocols.
+ */
+static int snd_usbmidi_detect_per_port_endpoints(snd_usb_midi_t* umidi,
+ snd_usb_midi_endpoint_info_t* 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;
}
/*
if (!endpoint->in_cables && !endpoint->out_cables)
return -ENOENT;
- return snd_usbmidi_detect_endpoint(umidi, endpoint);
+ return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
}
/*
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;
- umidi->endpoints[0].in->urb->complete = snd_usb_complete_callback(snd_usbmidi_in_midiman_complete);
if (endpoint->out_cables > 0x0001) {
ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
umidi->chip = chip;
umidi->iface = iface;
umidi->quirk = quirk;
+ umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
/* detect the endpoint(s) to use */
memset(endpoints, 0, sizeof(endpoints));
case QUIRK_MIDI_FIXED_ENDPOINT:
memcpy(&endpoints[0], quirk->data,
sizeof(snd_usb_midi_endpoint_info_t));
- err = snd_usbmidi_detect_endpoint(umidi, &endpoints[0]);
+ 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(snd_usb_midi_endpoint_info_t));
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_MOTU:
+ umidi->usb_protocol_ops = &snd_usbmidi_motu_ops;
+ 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(snd_usb_midi_endpoint_info_t));
+ err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
+ break;
default:
snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
err = -ENXIO;
git://git.onelab.eu / linux-2.6.git / blobdiff