Release 4.7 sound/usb/6fire/comm.c
/*
* Linux driver for TerraTec DMX 6Fire USB
*
* Device communications
*
* Author: Torsten Schenk <torsten.schenk@zoho.com>
* Created: Jan 01, 2011
* Copyright: (C) Torsten Schenk
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "comm.h"
#include "chip.h"
#include "midi.h"
enum {
COMM_EP = 1,
COMM_FPGA_EP = 2
};
static void usb6fire_comm_init_urb(struct comm_runtime *rt, struct urb *urb,
u8 *buffer, void *context, void(*handler)(struct urb *urb))
{
usb_init_urb(urb);
urb->transfer_buffer = buffer;
urb->pipe = usb_sndintpipe(rt->chip->dev, COMM_EP);
urb->complete = handler;
urb->context = context;
urb->interval = 1;
urb->dev = rt->chip->dev;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 90 | 100.00% | 1 | 100.00% |
| Total | 90 | 100.00% | 1 | 100.00% |
static void usb6fire_comm_receiver_handler(struct urb *urb)
{
struct comm_runtime *rt = urb->context;
struct midi_runtime *midi_rt = rt->chip->midi;
if (!urb->status) {
if (rt->receiver_buffer[0] == 0x10) /* midi in event */
if (midi_rt)
midi_rt->in_received(midi_rt,
rt->receiver_buffer + 2,
rt->receiver_buffer[1]);
}
if (!rt->chip->shutdown) {
urb->status = 0;
urb->actual_length = 0;
if (usb_submit_urb(urb, GFP_ATOMIC) < 0)
dev_warn(&urb->dev->dev,
"comm data receiver aborted.\n");
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 113 | 92.62% | 1 | 50.00% |
| takashi iwai | takashi iwai | 9 | 7.38% | 1 | 50.00% |
| Total | 122 | 100.00% | 2 | 100.00% |
static void usb6fire_comm_init_buffer(u8 *buffer, u8 id, u8 request,
u8 reg, u8 vl, u8 vh)
{
buffer[0] = 0x01;
buffer[2] = request;
buffer[3] = id;
switch (request) {
case 0x02:
buffer[1] = 0x05; /* length (starting at buffer[2]) */
buffer[4] = reg;
buffer[5] = vl;
buffer[6] = vh;
break;
case 0x12:
buffer[1] = 0x0b; /* length (starting at buffer[2]) */
buffer[4] = 0x00;
buffer[5] = 0x18;
buffer[6] = 0x05;
buffer[7] = 0x00;
buffer[8] = 0x01;
buffer[9] = 0x00;
buffer[10] = 0x9e;
buffer[11] = reg;
buffer[12] = vl;
break;
case 0x20:
case 0x21:
case 0x22:
buffer[1] = 0x04;
buffer[4] = reg;
buffer[5] = vl;
break;
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 191 | 100.00% | 1 | 100.00% |
| Total | 191 | 100.00% | 1 | 100.00% |
static int usb6fire_comm_send_buffer(u8 *buffer, struct usb_device *dev)
{
int ret;
int actual_len;
ret = usb_interrupt_msg(dev, usb_sndintpipe(dev, COMM_EP),
buffer, buffer[1] + 2, &actual_len, HZ);
if (ret < 0)
return ret;
else if (actual_len != buffer[1] + 2)
return -EIO;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 77 | 100.00% | 1 | 100.00% |
| Total | 77 | 100.00% | 1 | 100.00% |
static int usb6fire_comm_write8(struct comm_runtime *rt, u8 request,
u8 reg, u8 value)
{
u8 *buffer;
int ret;
/* 13: maximum length of message */
buffer = kmalloc(13, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
usb6fire_comm_init_buffer(buffer, 0x00, request, reg, value, 0x00);
ret = usb6fire_comm_send_buffer(buffer, rt->chip->dev);
kfree(buffer);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 50 | 60.98% | 1 | 50.00% |
| jussi kivilinna | jussi kivilinna | 32 | 39.02% | 1 | 50.00% |
| Total | 82 | 100.00% | 2 | 100.00% |
static int usb6fire_comm_write16(struct comm_runtime *rt, u8 request,
u8 reg, u8 vl, u8 vh)
{
u8 *buffer;
int ret;
/* 13: maximum length of message */
buffer = kmalloc(13, GFP_KERNEL);
if (!buffer)
return -ENOMEM;
usb6fire_comm_init_buffer(buffer, 0x00, request, reg, vl, vh);
ret = usb6fire_comm_send_buffer(buffer, rt->chip->dev);
kfree(buffer);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 53 | 62.35% | 1 | 50.00% |
| jussi kivilinna | jussi kivilinna | 32 | 37.65% | 1 | 50.00% |
| Total | 85 | 100.00% | 2 | 100.00% |
int usb6fire_comm_init(struct sfire_chip *chip)
{
struct comm_runtime *rt = kzalloc(sizeof(struct comm_runtime),
GFP_KERNEL);
struct urb *urb;
int ret;
if (!rt)
return -ENOMEM;
rt->receiver_buffer = kzalloc(COMM_RECEIVER_BUFSIZE, GFP_KERNEL);
if (!rt->receiver_buffer) {
kfree(rt);
return -ENOMEM;
}
urb = &rt->receiver;
rt->serial = 1;
rt->chip = chip;
usb_init_urb(urb);
rt->init_urb = usb6fire_comm_init_urb;
rt->write8 = usb6fire_comm_write8;
rt->write16 = usb6fire_comm_write16;
/* submit an urb that receives communication data from device */
urb->transfer_buffer = rt->receiver_buffer;
urb->transfer_buffer_length = COMM_RECEIVER_BUFSIZE;
urb->pipe = usb_rcvintpipe(chip->dev, COMM_EP);
urb->dev = chip->dev;
urb->complete = usb6fire_comm_receiver_handler;
urb->context = rt;
urb->interval = 1;
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret < 0) {
kfree(rt->receiver_buffer);
kfree(rt);
dev_err(&chip->dev->dev, "cannot create comm data receiver.");
return ret;
}
chip->comm = rt;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 169 | 76.47% | 1 | 25.00% |
| jussi kivilinna | jussi kivilinna | 36 | 16.29% | 1 | 25.00% |
| takashi iwai | takashi iwai | 9 | 4.07% | 1 | 25.00% |
| sachin kamat | sachin kamat | 7 | 3.17% | 1 | 25.00% |
| Total | 221 | 100.00% | 4 | 100.00% |
void usb6fire_comm_abort(struct sfire_chip *chip)
{
struct comm_runtime *rt = chip->comm;
if (rt)
usb_poison_urb(&rt->receiver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 31 | 100.00% | 1 | 100.00% |
| Total | 31 | 100.00% | 1 | 100.00% |
void usb6fire_comm_destroy(struct sfire_chip *chip)
{
struct comm_runtime *rt = chip->comm;
kfree(rt->receiver_buffer);
kfree(rt);
chip->comm = NULL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 21 | 56.76% | 1 | 50.00% |
| jussi kivilinna | jussi kivilinna | 16 | 43.24% | 1 | 50.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| torsten schenk | torsten schenk | 816 | 85.27% | 2 | 40.00% |
| jussi kivilinna | jussi kivilinna | 116 | 12.12% | 1 | 20.00% |
| takashi iwai | takashi iwai | 18 | 1.88% | 1 | 20.00% |
| sachin kamat | sachin kamat | 7 | 0.73% | 1 | 20.00% |
| Total | 957 | 100.00% | 5 | 100.00% |
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