V4L/DVB: staging/lirc: add lirc_igorplugusb driver
Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson
Mauro Carvalho Chehab
parent
35f168d10f
commit
eedaf1ae7c
1 changed files with 555 additions and 0 deletions
555
drivers/staging/lirc/lirc_igorplugusb.c
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555
drivers/staging/lirc/lirc_igorplugusb.c
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@ -0,0 +1,555 @@
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/*
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* lirc_igorplugusb - USB remote support for LIRC
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*
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* Supports the standard homebrew IgorPlugUSB receiver with Igor's firmware.
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* See http://www.cesko.host.sk/IgorPlugUSB/IgorPlug-USB%20(AVR)_eng.htm
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*
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* The device can only record bursts of up to 36 pulses/spaces.
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* Works fine with RC5. Longer commands lead to device buffer overrun.
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* (Maybe a better firmware or a microcontroller with more ram can help?)
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*
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* Version 0.1 [beta status]
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*
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* Copyright (C) 2004 Jan M. Hochstein
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* <hochstein@algo.informatik.tu-darmstadt.de>
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*
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* This driver was derived from:
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* Paul Miller <pmiller9@users.sourceforge.net>
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* "lirc_atiusb" module
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* Vladimir Dergachev <volodya@minspring.com>'s 2002
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* "USB ATI Remote support" (input device)
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* Adrian Dewhurst <sailor-lk@sailorfrag.net>'s 2002
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* "USB StreamZap remote driver" (LIRC)
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* Artur Lipowski <alipowski@kki.net.pl>'s 2002
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* "lirc_dev" and "lirc_gpio" LIRC modules
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/kmod.h>
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#include <linux/sched.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/usb.h>
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#include <linux/time.h>
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#include <media/lirc.h>
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#include <media/lirc_dev.h>
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/* module identification */
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#define DRIVER_VERSION "0.1"
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#define DRIVER_AUTHOR \
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"Jan M. Hochstein <hochstein@algo.informatik.tu-darmstadt.de>"
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#define DRIVER_DESC "USB remote driver for LIRC"
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#define DRIVER_NAME "lirc_igorplugusb"
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/* debugging support */
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#ifdef CONFIG_USB_DEBUG
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static int debug = 1;
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#else
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static int debug;
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#endif
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#define dprintk(fmt, args...) \
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do { \
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if (debug) \
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printk(KERN_DEBUG fmt, ## args); \
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} while (0)
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/* One mode2 pulse/space has 4 bytes. */
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#define CODE_LENGTH sizeof(int)
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/* Igor's firmware cannot record bursts longer than 36. */
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#define DEVICE_BUFLEN 36
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/*
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* Header at the beginning of the device's buffer:
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* unsigned char data_length
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* unsigned char data_start (!=0 means ring-buffer overrun)
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* unsigned char counter (incremented by each burst)
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*/
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#define DEVICE_HEADERLEN 3
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/* This is for the gap */
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#define ADDITIONAL_LIRC_BYTES 2
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/* times to poll per second */
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#define SAMPLE_RATE 100
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static int sample_rate = SAMPLE_RATE;
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/**** Igor's USB Request Codes */
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#define SET_INFRABUFFER_EMPTY 1
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/**
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* Params: none
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* Answer: empty
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*/
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#define GET_INFRACODE 2
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/**
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* Params:
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* wValue: offset to begin reading infra buffer
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*
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* Answer: infra data
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*/
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#define SET_DATAPORT_DIRECTION 3
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/**
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* Params:
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* wValue: (byte) 1 bit for each data port pin (0=in, 1=out)
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*
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* Answer: empty
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*/
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#define GET_DATAPORT_DIRECTION 4
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/**
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* Params: none
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*
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* Answer: (byte) 1 bit for each data port pin (0=in, 1=out)
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*/
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#define SET_OUT_DATAPORT 5
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/**
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* Params:
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* wValue: byte to write to output data port
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*
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* Answer: empty
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*/
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#define GET_OUT_DATAPORT 6
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/**
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* Params: none
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*
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* Answer: least significant 3 bits read from output data port
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*/
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#define GET_IN_DATAPORT 7
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/**
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* Params: none
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*
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* Answer: least significant 3 bits read from input data port
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*/
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#define READ_EEPROM 8
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/**
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* Params:
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* wValue: offset to begin reading EEPROM
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*
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* Answer: EEPROM bytes
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*/
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#define WRITE_EEPROM 9
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/**
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* Params:
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* wValue: offset to EEPROM byte
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* wIndex: byte to write
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*
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* Answer: empty
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*/
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#define SEND_RS232 10
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/**
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* Params:
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* wValue: byte to send
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*
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* Answer: empty
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*/
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#define RECV_RS232 11
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/**
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* Params: none
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*
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* Answer: byte received
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*/
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#define SET_RS232_BAUD 12
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/**
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* Params:
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* wValue: byte to write to UART bit rate register (UBRR)
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*
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* Answer: empty
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*/
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#define GET_RS232_BAUD 13
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/**
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* Params: none
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*
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* Answer: byte read from UART bit rate register (UBRR)
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*/
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/* data structure for each usb remote */
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struct igorplug {
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/* usb */
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struct usb_device *usbdev;
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struct urb *urb_in;
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int devnum;
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unsigned char *buf_in;
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unsigned int len_in;
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int in_space;
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struct timeval last_time;
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dma_addr_t dma_in;
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/* lirc */
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struct lirc_driver *d;
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/* handle sending (init strings) */
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int send_flags;
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wait_queue_head_t wait_out;
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};
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static int unregister_from_lirc(struct igorplug *ir)
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{
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struct lirc_driver *d = ir->d;
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int devnum;
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if (!ir->d)
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return -EINVAL;
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devnum = ir->devnum;
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dprintk(DRIVER_NAME "[%d]: unregister from lirc called\n", devnum);
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lirc_unregister_driver(d->minor);
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printk(DRIVER_NAME "[%d]: usb remote disconnected\n", devnum);
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kfree(d);
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ir->d = NULL;
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kfree(ir);
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return 0;
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}
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static int set_use_inc(void *data)
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{
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struct igorplug *ir = data;
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if (!ir) {
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printk(DRIVER_NAME "[?]: set_use_inc called with no context\n");
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return -EIO;
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}
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dprintk(DRIVER_NAME "[%d]: set use inc\n", ir->devnum);
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if (!ir->usbdev)
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return -ENODEV;
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return 0;
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}
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static void set_use_dec(void *data)
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{
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struct igorplug *ir = data;
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if (!ir) {
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printk(DRIVER_NAME "[?]: set_use_dec called with no context\n");
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return;
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}
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dprintk(DRIVER_NAME "[%d]: set use dec\n", ir->devnum);
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}
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/**
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* Called in user context.
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* return 0 if data was added to the buffer and
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* -ENODATA if none was available. This should add some number of bits
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* evenly divisible by code_length to the buffer
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*/
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static int usb_remote_poll(void *data, struct lirc_buffer *buf)
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{
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int ret;
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struct igorplug *ir = (struct igorplug *)data;
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if (!ir->usbdev) /* Has the device been removed? */
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return -ENODEV;
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memset(ir->buf_in, 0, ir->len_in);
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ret = usb_control_msg(
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ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
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GET_INFRACODE, USB_TYPE_VENDOR|USB_DIR_IN,
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0/* offset */, /*unused*/0,
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ir->buf_in, ir->len_in,
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/*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
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if (ret > 0) {
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int i = DEVICE_HEADERLEN;
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int code, timediff;
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struct timeval now;
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if (ret <= 1) /* ACK packet has 1 byte --> ignore */
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return -ENODATA;
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dprintk(DRIVER_NAME ": Got %d bytes. Header: %02x %02x %02x\n",
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ret, ir->buf_in[0], ir->buf_in[1], ir->buf_in[2]);
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if (ir->buf_in[2] != 0) {
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printk(DRIVER_NAME "[%d]: Device buffer overrun.\n",
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ir->devnum);
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/* start at earliest byte */
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i = DEVICE_HEADERLEN + ir->buf_in[2];
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/* where are we now? space, gap or pulse? */
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}
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do_gettimeofday(&now);
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timediff = now.tv_sec - ir->last_time.tv_sec;
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if (timediff + 1 > PULSE_MASK / 1000000)
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timediff = PULSE_MASK;
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else {
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timediff *= 1000000;
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timediff += now.tv_usec - ir->last_time.tv_usec;
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}
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ir->last_time.tv_sec = now.tv_sec;
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ir->last_time.tv_usec = now.tv_usec;
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/* create leading gap */
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code = timediff;
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lirc_buffer_write(buf, (unsigned char *)&code);
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ir->in_space = 1; /* next comes a pulse */
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/* MODE2: pulse/space (PULSE_BIT) in 1us units */
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while (i < ret) {
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/* 1 Igor-tick = 85.333333 us */
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code = (unsigned int)ir->buf_in[i] * 85
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+ (unsigned int)ir->buf_in[i] / 3;
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if (ir->in_space)
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code |= PULSE_BIT;
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lirc_buffer_write(buf, (unsigned char *)&code);
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/* 1 chunk = CODE_LENGTH bytes */
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ir->in_space ^= 1;
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++i;
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}
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ret = usb_control_msg(
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ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
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SET_INFRABUFFER_EMPTY, USB_TYPE_VENDOR|USB_DIR_IN,
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/*unused*/0, /*unused*/0,
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/*dummy*/ir->buf_in, /*dummy*/ir->len_in,
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/*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
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if (ret < 0)
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printk(DRIVER_NAME "[%d]: SET_INFRABUFFER_EMPTY: "
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"error %d\n", ir->devnum, ret);
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return 0;
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} else if (ret < 0)
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printk(DRIVER_NAME "[%d]: GET_INFRACODE: error %d\n",
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ir->devnum, ret);
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return -ENODATA;
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}
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static int usb_remote_probe(struct usb_interface *intf,
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const struct usb_device_id *id)
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{
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struct usb_device *dev = NULL;
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struct usb_host_interface *idesc = NULL;
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struct usb_host_endpoint *ep_ctl2;
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struct igorplug *ir = NULL;
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struct lirc_driver *driver = NULL;
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int devnum, pipe, maxp;
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int minor = 0;
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char buf[63], name[128] = "";
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int mem_failure = 0;
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int ret;
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dprintk(DRIVER_NAME ": usb probe called.\n");
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dev = interface_to_usbdev(intf);
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idesc = intf->cur_altsetting;
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if (idesc->desc.bNumEndpoints != 1)
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return -ENODEV;
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ep_ctl2 = idesc->endpoint;
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if (((ep_ctl2->desc.bEndpointAddress & USB_ENDPOINT_DIR_MASK)
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!= USB_DIR_IN)
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|| (ep_ctl2->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
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!= USB_ENDPOINT_XFER_CONTROL)
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return -ENODEV;
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pipe = usb_rcvctrlpipe(dev, ep_ctl2->desc.bEndpointAddress);
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devnum = dev->devnum;
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maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
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dprintk(DRIVER_NAME "[%d]: bytes_in_key=%lu maxp=%d\n",
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devnum, CODE_LENGTH, maxp);
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mem_failure = 0;
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ir = kzalloc(sizeof(struct igorplug), GFP_KERNEL);
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if (!ir) {
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mem_failure = 1;
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goto mem_failure_switch;
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}
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driver = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
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if (!driver) {
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mem_failure = 2;
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goto mem_failure_switch;
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}
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ir->buf_in = usb_alloc_coherent(dev,
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DEVICE_BUFLEN+DEVICE_HEADERLEN,
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GFP_ATOMIC, &ir->dma_in);
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if (!ir->buf_in) {
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mem_failure = 3;
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goto mem_failure_switch;
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}
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strcpy(driver->name, DRIVER_NAME " ");
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driver->minor = -1;
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driver->code_length = CODE_LENGTH * 8; /* in bits */
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driver->features = LIRC_CAN_REC_MODE2;
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driver->data = ir;
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driver->chunk_size = CODE_LENGTH;
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driver->buffer_size = DEVICE_BUFLEN + ADDITIONAL_LIRC_BYTES;
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driver->set_use_inc = &set_use_inc;
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driver->set_use_dec = &set_use_dec;
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driver->sample_rate = sample_rate; /* per second */
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driver->add_to_buf = &usb_remote_poll;
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driver->dev = &intf->dev;
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driver->owner = THIS_MODULE;
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init_waitqueue_head(&ir->wait_out);
|
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minor = lirc_register_driver(driver);
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if (minor < 0)
|
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mem_failure = 9;
|
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|
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mem_failure_switch:
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switch (mem_failure) {
|
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case 9:
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usb_free_coherent(dev, DEVICE_BUFLEN+DEVICE_HEADERLEN,
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ir->buf_in, ir->dma_in);
|
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case 3:
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kfree(driver);
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case 2:
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kfree(ir);
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case 1:
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printk(DRIVER_NAME "[%d]: out of memory (code=%d)\n",
|
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devnum, mem_failure);
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return -ENOMEM;
|
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}
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|
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driver->minor = minor;
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ir->d = driver;
|
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ir->devnum = devnum;
|
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ir->usbdev = dev;
|
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ir->len_in = DEVICE_BUFLEN+DEVICE_HEADERLEN;
|
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ir->in_space = 1; /* First mode2 event is a space. */
|
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do_gettimeofday(&ir->last_time);
|
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|
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if (dev->descriptor.iManufacturer
|
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&& usb_string(dev, dev->descriptor.iManufacturer,
|
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buf, sizeof(buf)) > 0)
|
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strlcpy(name, buf, sizeof(name));
|
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if (dev->descriptor.iProduct
|
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&& usb_string(dev, dev->descriptor.iProduct, buf, sizeof(buf)) > 0)
|
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snprintf(name + strlen(name), sizeof(name) - strlen(name),
|
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" %s", buf);
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printk(DRIVER_NAME "[%d]: %s on usb%d:%d\n", devnum, name,
|
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dev->bus->busnum, devnum);
|
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|
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/* clear device buffer */
|
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ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
|
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SET_INFRABUFFER_EMPTY, USB_TYPE_VENDOR|USB_DIR_IN,
|
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/*unused*/0, /*unused*/0,
|
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/*dummy*/ir->buf_in, /*dummy*/ir->len_in,
|
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/*timeout*/HZ * USB_CTRL_GET_TIMEOUT);
|
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if (ret < 0)
|
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printk(DRIVER_NAME "[%d]: SET_INFRABUFFER_EMPTY: error %d\n",
|
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devnum, ret);
|
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|
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usb_set_intfdata(intf, ir);
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return 0;
|
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}
|
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|
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|
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static void usb_remote_disconnect(struct usb_interface *intf)
|
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{
|
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struct usb_device *dev = interface_to_usbdev(intf);
|
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struct igorplug *ir = usb_get_intfdata(intf);
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usb_set_intfdata(intf, NULL);
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|
||||
if (!ir || !ir->d)
|
||||
return;
|
||||
|
||||
ir->usbdev = NULL;
|
||||
wake_up_all(&ir->wait_out);
|
||||
|
||||
usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
|
||||
|
||||
unregister_from_lirc(ir);
|
||||
}
|
||||
|
||||
static struct usb_device_id usb_remote_id_table[] = {
|
||||
/* Igor Plug USB (Atmel's Manufact. ID) */
|
||||
{ USB_DEVICE(0x03eb, 0x0002) },
|
||||
|
||||
/* Terminating entry */
|
||||
{ }
|
||||
};
|
||||
|
||||
static struct usb_driver usb_remote_driver = {
|
||||
.name = DRIVER_NAME,
|
||||
.probe = usb_remote_probe,
|
||||
.disconnect = usb_remote_disconnect,
|
||||
.id_table = usb_remote_id_table
|
||||
};
|
||||
|
||||
static int __init usb_remote_init(void)
|
||||
{
|
||||
int i;
|
||||
|
||||
printk(KERN_INFO "\n"
|
||||
DRIVER_NAME ": " DRIVER_DESC " v" DRIVER_VERSION "\n");
|
||||
printk(DRIVER_NAME ": " DRIVER_AUTHOR "\n");
|
||||
dprintk(DRIVER_NAME ": debug mode enabled\n");
|
||||
|
||||
i = usb_register(&usb_remote_driver);
|
||||
if (i < 0) {
|
||||
printk(DRIVER_NAME ": usb register failed, result = %d\n", i);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit usb_remote_exit(void)
|
||||
{
|
||||
usb_deregister(&usb_remote_driver);
|
||||
}
|
||||
|
||||
module_init(usb_remote_init);
|
||||
module_exit(usb_remote_exit);
|
||||
|
||||
#include <linux/vermagic.h>
|
||||
MODULE_INFO(vermagic, VERMAGIC_STRING);
|
||||
|
||||
MODULE_DESCRIPTION(DRIVER_DESC);
|
||||
MODULE_AUTHOR(DRIVER_AUTHOR);
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_DEVICE_TABLE(usb, usb_remote_id_table);
|
||||
|
||||
module_param(sample_rate, int, S_IRUGO | S_IWUSR);
|
||||
MODULE_PARM_DESC(sample_rate, "Sampling rate in Hz (default: 100)");
|
||||
|
||||
Loading…
Reference in a new issue