![Jarod Wilson](/assets/img/avatar_default.png)
Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1129 lines
31 KiB
C
1129 lines
31 KiB
C
/*
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* Driver for USB Windows Media Center Ed. eHome Infrared Transceivers
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*
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* Copyright (c) 2010 by Jarod Wilson <jarod@redhat.com>
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*
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* Based on the original lirc_mceusb and lirc_mceusb2 drivers, by Dan
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* Conti, Martin Blatter and Daniel Melander, the latter of which was
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* in turn also based on the lirc_atiusb driver by Paul Miller. The
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* two mce drivers were merged into one by Jarod Wilson, with transmit
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* support for the 1st-gen device added primarily by Patrick Calhoun,
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* with a bit of tweaks by Jarod. Debugging improvements and proper
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* support for what appears to be 3rd-gen hardware added by Jarod.
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* Initial port from lirc driver to ir-core drivery by Jarod, based
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* partially on a port to an earlier proposed IR infrastructure by
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* Jon Smirl, which included enhancements and simplifications to the
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* incoming IR buffer parsing routines.
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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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*/
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/input.h>
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#include <media/ir-core.h>
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#include <media/ir-common.h>
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#define DRIVER_VERSION "1.91"
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#define DRIVER_AUTHOR "Jarod Wilson <jarod@wilsonet.com>"
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#define DRIVER_DESC "Windows Media Center Ed. eHome Infrared Transceiver " \
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"device driver"
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#define DRIVER_NAME "mceusb"
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#define USB_BUFLEN 32 /* USB reception buffer length */
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#define USB_CTRL_MSG_SZ 2 /* Size of usb ctrl msg on gen1 hw */
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#define MCE_G1_INIT_MSGS 40 /* Init messages on gen1 hw to throw out */
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/* MCE constants */
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#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
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#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
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#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
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#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
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#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
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#define MCE_CONTROL_HEADER 0x9F /* MCE status header */
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#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
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#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
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#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
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#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
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#define MCE_PULSE_MASK 0x7F /* Pulse mask */
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#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */
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#define MCE_PACKET_LENGTH_MASK 0x1F /* Packet length mask */
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/* module parameters */
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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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/* general constants */
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#define SEND_FLAG_IN_PROGRESS 1
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#define SEND_FLAG_COMPLETE 2
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#define RECV_FLAG_IN_PROGRESS 3
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#define RECV_FLAG_COMPLETE 4
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#define MCEUSB_RX 1
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#define MCEUSB_TX 2
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#define VENDOR_PHILIPS 0x0471
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#define VENDOR_SMK 0x0609
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#define VENDOR_TATUNG 0x1460
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#define VENDOR_GATEWAY 0x107b
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#define VENDOR_SHUTTLE 0x1308
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#define VENDOR_SHUTTLE2 0x051c
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#define VENDOR_MITSUMI 0x03ee
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#define VENDOR_TOPSEED 0x1784
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#define VENDOR_RICAVISION 0x179d
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#define VENDOR_ITRON 0x195d
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#define VENDOR_FIC 0x1509
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#define VENDOR_LG 0x043e
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#define VENDOR_MICROSOFT 0x045e
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#define VENDOR_FORMOSA 0x147a
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#define VENDOR_FINTEK 0x1934
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#define VENDOR_PINNACLE 0x2304
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#define VENDOR_ECS 0x1019
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#define VENDOR_WISTRON 0x0fb8
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#define VENDOR_COMPRO 0x185b
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#define VENDOR_NORTHSTAR 0x04eb
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#define VENDOR_REALTEK 0x0bda
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#define VENDOR_TIVO 0x105a
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static struct usb_device_id mceusb_dev_table[] = {
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/* Original Microsoft MCE IR Transceiver (often HP-branded) */
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{ USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
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/* Philips Infrared Transceiver - Sahara branded */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x0608) },
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/* Philips Infrared Transceiver - HP branded */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
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/* Philips SRM5100 */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
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/* Philips Infrared Transceiver - Omaura */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
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/* Philips Infrared Transceiver - Spinel plus */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x0613) },
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/* Philips eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
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/* Realtek MCE IR Receiver */
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{ USB_DEVICE(VENDOR_REALTEK, 0x0161) },
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/* SMK/Toshiba G83C0004D410 */
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{ USB_DEVICE(VENDOR_SMK, 0x031d) },
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/* SMK eHome Infrared Transceiver (Sony VAIO) */
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{ USB_DEVICE(VENDOR_SMK, 0x0322) },
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/* bundled with Hauppauge PVR-150 */
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{ USB_DEVICE(VENDOR_SMK, 0x0334) },
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/* SMK eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_SMK, 0x0338) },
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/* Tatung eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TATUNG, 0x9150) },
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/* Shuttle eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
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/* Shuttle eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
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/* Gateway eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
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/* Mitsumi */
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{ USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
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/* Topseed eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
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/* Topseed HP eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
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/* Topseed eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
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/* Topseed eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
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/* Topseed eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
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/* Topseed eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
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/* Ricavision internal Infrared Transceiver */
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{ USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
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/* Itron ione Libra Q-11 */
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{ USB_DEVICE(VENDOR_ITRON, 0x7002) },
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/* FIC eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_FIC, 0x9242) },
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/* LG eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_LG, 0x9803) },
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/* Microsoft MCE Infrared Transceiver */
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{ USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
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/* Formosa eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
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/* Formosa21 / eHome Infrared Receiver */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
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/* Formosa aim / Trust MCE Infrared Receiver */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
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/* Formosa Industrial Computing / Beanbag Emulation Device */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
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/* Formosa21 / eHome Infrared Receiver */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe03a) },
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/* Formosa Industrial Computing AIM IR605/A */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe03c) },
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/* Formosa Industrial Computing */
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{ USB_DEVICE(VENDOR_FORMOSA, 0xe03e) },
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/* Fintek eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_FINTEK, 0x0602) },
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/* Fintek eHome Infrared Transceiver (in the AOpen MP45) */
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{ USB_DEVICE(VENDOR_FINTEK, 0x0702) },
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/* Pinnacle Remote Kit */
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{ USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
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/* Elitegroup Computer Systems IR */
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{ USB_DEVICE(VENDOR_ECS, 0x0f38) },
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/* Wistron Corp. eHome Infrared Receiver */
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{ USB_DEVICE(VENDOR_WISTRON, 0x0002) },
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/* Compro K100 */
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{ USB_DEVICE(VENDOR_COMPRO, 0x3020) },
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/* Compro K100 v2 */
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{ USB_DEVICE(VENDOR_COMPRO, 0x3082) },
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/* Northstar Systems, Inc. eHome Infrared Transceiver */
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{ USB_DEVICE(VENDOR_NORTHSTAR, 0xe004) },
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/* TiVo PC IR Receiver */
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{ USB_DEVICE(VENDOR_TIVO, 0x2000) },
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/* Terminating entry */
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{ }
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};
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static struct usb_device_id gen3_list[] = {
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{ USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
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{}
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};
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static struct usb_device_id microsoft_gen1_list[] = {
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{ USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
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{}
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};
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static struct usb_device_id std_tx_mask_list[] = {
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{ USB_DEVICE(VENDOR_MICROSOFT, 0x006d) },
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{ USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
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{ USB_DEVICE(VENDOR_SMK, 0x031d) },
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{ USB_DEVICE(VENDOR_SMK, 0x0322) },
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{ USB_DEVICE(VENDOR_SMK, 0x0334) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x000a) },
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{ USB_DEVICE(VENDOR_TOPSEED, 0x0011) },
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{ USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
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{}
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};
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/* data structure for each usb transceiver */
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struct mceusb_dev {
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/* ir-core bits */
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struct ir_dev_props *props;
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struct ir_raw_event rawir;
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/* core device bits */
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struct device *dev;
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struct input_dev *idev;
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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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struct usb_endpoint_descriptor *usb_ep_in;
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struct usb_endpoint_descriptor *usb_ep_out;
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/* buffers and dma */
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unsigned char *buf_in;
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unsigned int len_in;
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u8 cmd; /* MCE command type */
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u8 rem; /* Remaining IR data bytes in packet */
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dma_addr_t dma_in;
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dma_addr_t dma_out;
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struct {
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u32 connected:1;
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u32 tx_mask_inverted:1;
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u32 microsoft_gen1:1;
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u32 reserved:29;
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} flags;
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/* transmit support */
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int send_flags;
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u32 carrier;
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unsigned char tx_mask;
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char name[128];
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char phys[64];
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};
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/*
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* MCE Device Command Strings
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* Device command responses vary from device to device...
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* - DEVICE_RESET resets the hardware to its default state
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* - GET_REVISION fetches the hardware/software revision, common
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* replies are ff 0b 45 ff 1b 08 and ff 0b 50 ff 1b 42
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* - GET_CARRIER_FREQ gets the carrier mode and frequency of the
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* device, with replies in the form of 9f 06 MM FF, where MM is 0-3,
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* meaning clk of 10000000, 2500000, 625000 or 156250, and FF is
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* ((clk / frequency) - 1)
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* - GET_RX_TIMEOUT fetches the receiver timeout in units of 50us,
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* response in the form of 9f 0c msb lsb
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* - GET_TX_BITMASK fetches the transmitter bitmask, replies in
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* the form of 9f 08 bm, where bm is the bitmask
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* - GET_RX_SENSOR fetches the RX sensor setting -- long-range
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* general use one or short-range learning one, in the form of
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* 9f 14 ss, where ss is either 01 for long-range or 02 for short
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* - SET_CARRIER_FREQ sets a new carrier mode and frequency
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* - SET_TX_BITMASK sets the transmitter bitmask
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* - SET_RX_TIMEOUT sets the receiver timeout
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* - SET_RX_SENSOR sets which receiver sensor to use
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*/
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static char DEVICE_RESET[] = {0x00, 0xff, 0xaa};
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static char GET_REVISION[] = {0xff, 0x0b};
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static char GET_UNKNOWN[] = {0xff, 0x18};
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static char GET_UNKNOWN2[] = {0x9f, 0x05};
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static char GET_CARRIER_FREQ[] = {0x9f, 0x07};
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static char GET_RX_TIMEOUT[] = {0x9f, 0x0d};
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static char GET_TX_BITMASK[] = {0x9f, 0x13};
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static char GET_RX_SENSOR[] = {0x9f, 0x15};
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/* sub in desired values in lower byte or bytes for full command */
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/* FIXME: make use of these for transmit.
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static char SET_CARRIER_FREQ[] = {0x9f, 0x06, 0x00, 0x00};
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static char SET_TX_BITMASK[] = {0x9f, 0x08, 0x00};
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static char SET_RX_TIMEOUT[] = {0x9f, 0x0c, 0x00, 0x00};
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static char SET_RX_SENSOR[] = {0x9f, 0x14, 0x00};
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*/
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static void mceusb_dev_printdata(struct mceusb_dev *ir, char *buf,
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int len, bool out)
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{
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char codes[USB_BUFLEN * 3 + 1];
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char inout[9];
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int i;
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u8 cmd, subcmd, data1, data2;
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struct device *dev = ir->dev;
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int idx = 0;
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/* skip meaningless 0xb1 0x60 header bytes on orig receiver */
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if (ir->flags.microsoft_gen1 && !out)
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idx = 2;
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if (len <= idx)
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return;
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for (i = 0; i < len && i < USB_BUFLEN; i++)
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snprintf(codes + i * 3, 4, "%02x ", buf[i] & 0xFF);
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dev_info(dev, "%sx data: %s (length=%d)\n",
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(out ? "t" : "r"), codes, len);
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if (out)
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strcpy(inout, "Request\0");
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else
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strcpy(inout, "Got\0");
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cmd = buf[idx] & 0xff;
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subcmd = buf[idx + 1] & 0xff;
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data1 = buf[idx + 2] & 0xff;
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data2 = buf[idx + 3] & 0xff;
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switch (cmd) {
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case 0x00:
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if (subcmd == 0xff && data1 == 0xaa)
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dev_info(dev, "Device reset requested\n");
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else
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dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
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cmd, subcmd);
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break;
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case 0xff:
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switch (subcmd) {
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case 0x0b:
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if (len == 2)
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dev_info(dev, "Get hw/sw rev?\n");
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else
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dev_info(dev, "hw/sw rev 0x%02x 0x%02x "
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"0x%02x 0x%02x\n", data1, data2,
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buf[idx + 4], buf[idx + 5]);
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break;
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case 0xaa:
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dev_info(dev, "Device reset requested\n");
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break;
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case 0xfe:
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dev_info(dev, "Previous command not supported\n");
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break;
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case 0x18:
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case 0x1b:
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default:
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dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
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cmd, subcmd);
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break;
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}
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break;
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case 0x9f:
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switch (subcmd) {
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case 0x03:
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dev_info(dev, "Ping\n");
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break;
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case 0x04:
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dev_info(dev, "Resp to 9f 05 of 0x%02x 0x%02x\n",
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data1, data2);
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break;
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case 0x06:
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dev_info(dev, "%s carrier mode and freq of "
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"0x%02x 0x%02x\n", inout, data1, data2);
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break;
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case 0x07:
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dev_info(dev, "Get carrier mode and freq\n");
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break;
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case 0x08:
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dev_info(dev, "%s transmit blaster mask of 0x%02x\n",
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inout, data1);
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break;
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case 0x0c:
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/* value is in units of 50us, so x*50/100 or x/2 ms */
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dev_info(dev, "%s receive timeout of %d ms\n",
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inout, ((data1 << 8) | data2) / 2);
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break;
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case 0x0d:
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dev_info(dev, "Get receive timeout\n");
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break;
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case 0x13:
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dev_info(dev, "Get transmit blaster mask\n");
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break;
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case 0x14:
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dev_info(dev, "%s %s-range receive sensor in use\n",
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inout, data1 == 0x02 ? "short" : "long");
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break;
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case 0x15:
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if (len == 2)
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dev_info(dev, "Get receive sensor\n");
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else
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dev_info(dev, "Received pulse count is %d\n",
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((data1 << 8) | data2));
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break;
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case 0xfe:
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dev_info(dev, "Error! Hardware is likely wedged...\n");
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break;
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case 0x05:
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case 0x09:
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case 0x0f:
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default:
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dev_info(dev, "Unknown command 0x%02x 0x%02x\n",
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cmd, subcmd);
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break;
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}
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break;
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default:
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break;
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}
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}
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|
|
|
static void mce_async_callback(struct urb *urb, struct pt_regs *regs)
|
|
{
|
|
struct mceusb_dev *ir;
|
|
int len;
|
|
|
|
if (!urb)
|
|
return;
|
|
|
|
ir = urb->context;
|
|
if (ir) {
|
|
len = urb->actual_length;
|
|
|
|
dev_dbg(ir->dev, "callback called (status=%d len=%d)\n",
|
|
urb->status, len);
|
|
|
|
if (debug)
|
|
mceusb_dev_printdata(ir, urb->transfer_buffer,
|
|
len, true);
|
|
}
|
|
|
|
}
|
|
|
|
/* request incoming or send outgoing usb packet - used to initialize remote */
|
|
static void mce_request_packet(struct mceusb_dev *ir,
|
|
struct usb_endpoint_descriptor *ep,
|
|
unsigned char *data, int size, int urb_type)
|
|
{
|
|
int res;
|
|
struct urb *async_urb;
|
|
struct device *dev = ir->dev;
|
|
unsigned char *async_buf;
|
|
|
|
if (urb_type == MCEUSB_TX) {
|
|
async_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (unlikely(!async_urb)) {
|
|
dev_err(dev, "Error, couldn't allocate urb!\n");
|
|
return;
|
|
}
|
|
|
|
async_buf = kzalloc(size, GFP_KERNEL);
|
|
if (!async_buf) {
|
|
dev_err(dev, "Error, couldn't allocate buf!\n");
|
|
usb_free_urb(async_urb);
|
|
return;
|
|
}
|
|
|
|
/* outbound data */
|
|
usb_fill_int_urb(async_urb, ir->usbdev,
|
|
usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
|
|
async_buf, size, (usb_complete_t)mce_async_callback,
|
|
ir, ep->bInterval);
|
|
memcpy(async_buf, data, size);
|
|
|
|
} else if (urb_type == MCEUSB_RX) {
|
|
/* standard request */
|
|
async_urb = ir->urb_in;
|
|
ir->send_flags = RECV_FLAG_IN_PROGRESS;
|
|
|
|
} else {
|
|
dev_err(dev, "Error! Unknown urb type %d\n", urb_type);
|
|
return;
|
|
}
|
|
|
|
dev_dbg(dev, "receive request called (size=%#x)\n", size);
|
|
|
|
async_urb->transfer_buffer_length = size;
|
|
async_urb->dev = ir->usbdev;
|
|
|
|
res = usb_submit_urb(async_urb, GFP_ATOMIC);
|
|
if (res) {
|
|
dev_dbg(dev, "receive request FAILED! (res=%d)\n", res);
|
|
return;
|
|
}
|
|
dev_dbg(dev, "receive request complete (res=%d)\n", res);
|
|
}
|
|
|
|
static void mce_async_out(struct mceusb_dev *ir, unsigned char *data, int size)
|
|
{
|
|
mce_request_packet(ir, ir->usb_ep_out, data, size, MCEUSB_TX);
|
|
}
|
|
|
|
static void mce_sync_in(struct mceusb_dev *ir, unsigned char *data, int size)
|
|
{
|
|
mce_request_packet(ir, ir->usb_ep_in, data, size, MCEUSB_RX);
|
|
}
|
|
|
|
/* Send data out the IR blaster port(s) */
|
|
static int mceusb_tx_ir(void *priv, int *txbuf, u32 n)
|
|
{
|
|
struct mceusb_dev *ir = priv;
|
|
int i, ret = 0;
|
|
int count, cmdcount = 0;
|
|
unsigned char *cmdbuf; /* MCE command buffer */
|
|
long signal_duration = 0; /* Singnal length in us */
|
|
struct timeval start_time, end_time;
|
|
|
|
do_gettimeofday(&start_time);
|
|
|
|
count = n / sizeof(int);
|
|
|
|
cmdbuf = kzalloc(sizeof(int) * MCE_CMDBUF_SIZE, GFP_KERNEL);
|
|
if (!cmdbuf)
|
|
return -ENOMEM;
|
|
|
|
/* MCE tx init header */
|
|
cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
|
|
cmdbuf[cmdcount++] = 0x08;
|
|
cmdbuf[cmdcount++] = ir->tx_mask;
|
|
|
|
/* Generate mce packet data */
|
|
for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
|
|
signal_duration += txbuf[i];
|
|
txbuf[i] = txbuf[i] / MCE_TIME_UNIT;
|
|
|
|
do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
|
|
|
|
/* Insert mce packet header every 4th entry */
|
|
if ((cmdcount < MCE_CMDBUF_SIZE) &&
|
|
(cmdcount - MCE_TX_HEADER_LENGTH) %
|
|
MCE_CODE_LENGTH == 0)
|
|
cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
|
|
|
|
/* Insert mce packet data */
|
|
if (cmdcount < MCE_CMDBUF_SIZE)
|
|
cmdbuf[cmdcount++] =
|
|
(txbuf[i] < MCE_PULSE_BIT ?
|
|
txbuf[i] : MCE_MAX_PULSE_LENGTH) |
|
|
(i & 1 ? 0x00 : MCE_PULSE_BIT);
|
|
else {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
} while ((txbuf[i] > MCE_MAX_PULSE_LENGTH) &&
|
|
(txbuf[i] -= MCE_MAX_PULSE_LENGTH));
|
|
}
|
|
|
|
/* Fix packet length in last header */
|
|
cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
|
|
0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
|
|
|
|
/* Check if we have room for the empty packet at the end */
|
|
if (cmdcount >= MCE_CMDBUF_SIZE) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
/* All mce commands end with an empty packet (0x80) */
|
|
cmdbuf[cmdcount++] = 0x80;
|
|
|
|
/* Transmit the command to the mce device */
|
|
mce_async_out(ir, cmdbuf, cmdcount);
|
|
|
|
/*
|
|
* The lircd gap calculation expects the write function to
|
|
* wait the time it takes for the ircommand to be sent before
|
|
* it returns.
|
|
*/
|
|
do_gettimeofday(&end_time);
|
|
signal_duration -= (end_time.tv_usec - start_time.tv_usec) +
|
|
(end_time.tv_sec - start_time.tv_sec) * 1000000;
|
|
|
|
/* delay with the closest number of ticks */
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
schedule_timeout(usecs_to_jiffies(signal_duration));
|
|
|
|
out:
|
|
kfree(cmdbuf);
|
|
return ret ? ret : n;
|
|
}
|
|
|
|
/* Sets active IR outputs -- mce devices typically (all?) have two */
|
|
static int mceusb_set_tx_mask(void *priv, u32 mask)
|
|
{
|
|
struct mceusb_dev *ir = priv;
|
|
|
|
if (ir->flags.tx_mask_inverted)
|
|
ir->tx_mask = (mask != 0x03 ? mask ^ 0x03 : mask) << 1;
|
|
else
|
|
ir->tx_mask = mask;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Sets the send carrier frequency and mode */
|
|
static int mceusb_set_tx_carrier(void *priv, u32 carrier)
|
|
{
|
|
struct mceusb_dev *ir = priv;
|
|
int clk = 10000000;
|
|
int prescaler = 0, divisor = 0;
|
|
unsigned char cmdbuf[4] = { 0x9f, 0x06, 0x00, 0x00 };
|
|
|
|
/* Carrier has changed */
|
|
if (ir->carrier != carrier) {
|
|
|
|
if (carrier == 0) {
|
|
ir->carrier = carrier;
|
|
cmdbuf[2] = 0x01;
|
|
cmdbuf[3] = 0x80;
|
|
dev_dbg(ir->dev, "%s: disabling carrier "
|
|
"modulation\n", __func__);
|
|
mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
|
|
return carrier;
|
|
}
|
|
|
|
for (prescaler = 0; prescaler < 4; ++prescaler) {
|
|
divisor = (clk >> (2 * prescaler)) / carrier;
|
|
if (divisor <= 0xFF) {
|
|
ir->carrier = carrier;
|
|
cmdbuf[2] = prescaler;
|
|
cmdbuf[3] = divisor;
|
|
dev_dbg(ir->dev, "%s: requesting %u HZ "
|
|
"carrier\n", __func__, carrier);
|
|
|
|
/* Transmit new carrier to mce device */
|
|
mce_async_out(ir, cmdbuf, sizeof(cmdbuf));
|
|
return carrier;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
return carrier;
|
|
}
|
|
|
|
static void mceusb_process_ir_data(struct mceusb_dev *ir, int buf_len)
|
|
{
|
|
struct ir_raw_event rawir = { .pulse = false, .duration = 0 };
|
|
int i, start_index = 0;
|
|
u8 hdr = MCE_CONTROL_HEADER;
|
|
|
|
/* skip meaningless 0xb1 0x60 header bytes on orig receiver */
|
|
if (ir->flags.microsoft_gen1)
|
|
start_index = 2;
|
|
|
|
for (i = start_index; i < buf_len;) {
|
|
if (ir->rem == 0) {
|
|
/* decode mce packets of the form (84),AA,BB,CC,DD */
|
|
/* IR data packets can span USB messages - rem */
|
|
hdr = ir->buf_in[i];
|
|
ir->rem = (hdr & MCE_PACKET_LENGTH_MASK);
|
|
ir->cmd = (hdr & ~MCE_PACKET_LENGTH_MASK);
|
|
dev_dbg(ir->dev, "New data. rem: 0x%02x, cmd: 0x%02x\n",
|
|
ir->rem, ir->cmd);
|
|
i++;
|
|
}
|
|
|
|
/* don't process MCE commands */
|
|
if (hdr == MCE_CONTROL_HEADER || hdr == 0xff) {
|
|
ir->rem = 0;
|
|
return;
|
|
}
|
|
|
|
for (; (ir->rem > 0) && (i < buf_len); i++) {
|
|
ir->rem--;
|
|
|
|
rawir.pulse = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
|
|
rawir.duration = (ir->buf_in[i] & MCE_PULSE_MASK)
|
|
* MCE_TIME_UNIT * 1000;
|
|
|
|
if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
|
|
if (ir->rawir.pulse == rawir.pulse)
|
|
ir->rawir.duration += rawir.duration;
|
|
else {
|
|
ir->rawir.duration = rawir.duration;
|
|
ir->rawir.pulse = rawir.pulse;
|
|
}
|
|
continue;
|
|
}
|
|
rawir.duration += ir->rawir.duration;
|
|
ir->rawir.duration = 0;
|
|
ir->rawir.pulse = rawir.pulse;
|
|
|
|
dev_dbg(ir->dev, "Storing %s with duration %d\n",
|
|
rawir.pulse ? "pulse" : "space",
|
|
rawir.duration);
|
|
|
|
ir_raw_event_store(ir->idev, &rawir);
|
|
}
|
|
|
|
if (ir->buf_in[i] == 0x80 || ir->buf_in[i] == 0x9f)
|
|
ir->rem = 0;
|
|
|
|
dev_dbg(ir->dev, "calling ir_raw_event_handle\n");
|
|
ir_raw_event_handle(ir->idev);
|
|
}
|
|
}
|
|
|
|
static void mceusb_dev_recv(struct urb *urb, struct pt_regs *regs)
|
|
{
|
|
struct mceusb_dev *ir;
|
|
int buf_len;
|
|
|
|
if (!urb)
|
|
return;
|
|
|
|
ir = urb->context;
|
|
if (!ir) {
|
|
usb_unlink_urb(urb);
|
|
return;
|
|
}
|
|
|
|
buf_len = urb->actual_length;
|
|
|
|
if (debug)
|
|
mceusb_dev_printdata(ir, urb->transfer_buffer, buf_len, false);
|
|
|
|
if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
|
|
ir->send_flags = SEND_FLAG_COMPLETE;
|
|
dev_dbg(ir->dev, "setup answer received %d bytes\n",
|
|
buf_len);
|
|
}
|
|
|
|
switch (urb->status) {
|
|
/* success */
|
|
case 0:
|
|
mceusb_process_ir_data(ir, buf_len);
|
|
break;
|
|
|
|
case -ECONNRESET:
|
|
case -ENOENT:
|
|
case -ESHUTDOWN:
|
|
usb_unlink_urb(urb);
|
|
return;
|
|
|
|
case -EPIPE:
|
|
default:
|
|
break;
|
|
}
|
|
|
|
usb_submit_urb(urb, GFP_ATOMIC);
|
|
}
|
|
|
|
static void mceusb_gen1_init(struct mceusb_dev *ir)
|
|
{
|
|
int ret;
|
|
int maxp = ir->len_in;
|
|
struct device *dev = ir->dev;
|
|
char *data;
|
|
|
|
data = kzalloc(USB_CTRL_MSG_SZ, GFP_KERNEL);
|
|
if (!data) {
|
|
dev_err(dev, "%s: memory allocation failed!\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This is a strange one. Windows issues a set address to the device
|
|
* on the receive control pipe and expect a certain value pair back
|
|
*/
|
|
ret = usb_control_msg(ir->usbdev, usb_rcvctrlpipe(ir->usbdev, 0),
|
|
USB_REQ_SET_ADDRESS, USB_TYPE_VENDOR, 0, 0,
|
|
data, USB_CTRL_MSG_SZ, HZ * 3);
|
|
dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
|
|
dev_dbg(dev, "%s - data[0] = %d, data[1] = %d\n",
|
|
__func__, data[0], data[1]);
|
|
|
|
/* set feature: bit rate 38400 bps */
|
|
ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
|
|
USB_REQ_SET_FEATURE, USB_TYPE_VENDOR,
|
|
0xc04e, 0x0000, NULL, 0, HZ * 3);
|
|
|
|
dev_dbg(dev, "%s - ret = %d\n", __func__, ret);
|
|
|
|
/* bRequest 4: set char length to 8 bits */
|
|
ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
|
|
4, USB_TYPE_VENDOR,
|
|
0x0808, 0x0000, NULL, 0, HZ * 3);
|
|
dev_dbg(dev, "%s - retB = %d\n", __func__, ret);
|
|
|
|
/* bRequest 2: set handshaking to use DTR/DSR */
|
|
ret = usb_control_msg(ir->usbdev, usb_sndctrlpipe(ir->usbdev, 0),
|
|
2, USB_TYPE_VENDOR,
|
|
0x0000, 0x0100, NULL, 0, HZ * 3);
|
|
dev_dbg(dev, "%s - retC = %d\n", __func__, ret);
|
|
|
|
/* device reset */
|
|
mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* get hw/sw revision? */
|
|
mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
kfree(data);
|
|
};
|
|
|
|
static void mceusb_gen2_init(struct mceusb_dev *ir)
|
|
{
|
|
int maxp = ir->len_in;
|
|
|
|
/* device reset */
|
|
mce_async_out(ir, DEVICE_RESET, sizeof(DEVICE_RESET));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* get hw/sw revision? */
|
|
mce_async_out(ir, GET_REVISION, sizeof(GET_REVISION));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* unknown what the next two actually return... */
|
|
mce_async_out(ir, GET_UNKNOWN, sizeof(GET_UNKNOWN));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
mce_async_out(ir, GET_UNKNOWN2, sizeof(GET_UNKNOWN2));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
}
|
|
|
|
static void mceusb_get_parameters(struct mceusb_dev *ir)
|
|
{
|
|
int maxp = ir->len_in;
|
|
|
|
/* get the carrier and frequency */
|
|
mce_async_out(ir, GET_CARRIER_FREQ, sizeof(GET_CARRIER_FREQ));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* get the transmitter bitmask */
|
|
mce_async_out(ir, GET_TX_BITMASK, sizeof(GET_TX_BITMASK));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* get receiver timeout value */
|
|
mce_async_out(ir, GET_RX_TIMEOUT, sizeof(GET_RX_TIMEOUT));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* get receiver sensor setting */
|
|
mce_async_out(ir, GET_RX_SENSOR, sizeof(GET_RX_SENSOR));
|
|
mce_sync_in(ir, NULL, maxp);
|
|
}
|
|
|
|
static struct input_dev *mceusb_init_input_dev(struct mceusb_dev *ir)
|
|
{
|
|
struct input_dev *idev;
|
|
struct ir_dev_props *props;
|
|
struct device *dev = ir->dev;
|
|
int ret = -ENODEV;
|
|
|
|
idev = input_allocate_device();
|
|
if (!idev) {
|
|
dev_err(dev, "remote input dev allocation failed\n");
|
|
goto idev_alloc_failed;
|
|
}
|
|
|
|
ret = -ENOMEM;
|
|
props = kzalloc(sizeof(struct ir_dev_props), GFP_KERNEL);
|
|
if (!props) {
|
|
dev_err(dev, "remote ir dev props allocation failed\n");
|
|
goto props_alloc_failed;
|
|
}
|
|
|
|
snprintf(ir->name, sizeof(ir->name), "Media Center Ed. eHome "
|
|
"Infrared Remote Transceiver (%04x:%04x)",
|
|
le16_to_cpu(ir->usbdev->descriptor.idVendor),
|
|
le16_to_cpu(ir->usbdev->descriptor.idProduct));
|
|
|
|
idev->name = ir->name;
|
|
usb_make_path(ir->usbdev, ir->phys, sizeof(ir->phys));
|
|
strlcat(ir->phys, "/input0", sizeof(ir->phys));
|
|
idev->phys = ir->phys;
|
|
|
|
props->priv = ir;
|
|
props->driver_type = RC_DRIVER_IR_RAW;
|
|
props->allowed_protos = IR_TYPE_ALL;
|
|
props->s_tx_mask = mceusb_set_tx_mask;
|
|
props->s_tx_carrier = mceusb_set_tx_carrier;
|
|
props->tx_ir = mceusb_tx_ir;
|
|
|
|
ir->props = props;
|
|
|
|
ret = ir_input_register(idev, RC_MAP_RC6_MCE, props, DRIVER_NAME);
|
|
if (ret < 0) {
|
|
dev_err(dev, "remote input device register failed\n");
|
|
goto irdev_failed;
|
|
}
|
|
|
|
return idev;
|
|
|
|
irdev_failed:
|
|
kfree(props);
|
|
props_alloc_failed:
|
|
input_free_device(idev);
|
|
idev_alloc_failed:
|
|
return NULL;
|
|
}
|
|
|
|
static int __devinit mceusb_dev_probe(struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
struct usb_host_interface *idesc;
|
|
struct usb_endpoint_descriptor *ep = NULL;
|
|
struct usb_endpoint_descriptor *ep_in = NULL;
|
|
struct usb_endpoint_descriptor *ep_out = NULL;
|
|
struct mceusb_dev *ir = NULL;
|
|
int pipe, maxp, i;
|
|
char buf[63], name[128] = "";
|
|
bool is_gen3;
|
|
bool is_microsoft_gen1;
|
|
bool tx_mask_inverted;
|
|
|
|
dev_dbg(&intf->dev, ": %s called\n", __func__);
|
|
|
|
idesc = intf->cur_altsetting;
|
|
|
|
is_gen3 = usb_match_id(intf, gen3_list) ? 1 : 0;
|
|
is_microsoft_gen1 = usb_match_id(intf, microsoft_gen1_list) ? 1 : 0;
|
|
tx_mask_inverted = usb_match_id(intf, std_tx_mask_list) ? 0 : 1;
|
|
|
|
/* step through the endpoints to find first bulk in and out endpoint */
|
|
for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
|
|
ep = &idesc->endpoint[i].desc;
|
|
|
|
if ((ep_in == NULL)
|
|
&& ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
== USB_DIR_IN)
|
|
&& (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
|
|
== USB_ENDPOINT_XFER_BULK)
|
|
|| ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
|
|
== USB_ENDPOINT_XFER_INT))) {
|
|
|
|
ep_in = ep;
|
|
ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
|
|
ep_in->bInterval = 1;
|
|
dev_dbg(&intf->dev, ": acceptable inbound endpoint "
|
|
"found\n");
|
|
}
|
|
|
|
if ((ep_out == NULL)
|
|
&& ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
|
|
== USB_DIR_OUT)
|
|
&& (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
|
|
== USB_ENDPOINT_XFER_BULK)
|
|
|| ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
|
|
== USB_ENDPOINT_XFER_INT))) {
|
|
|
|
ep_out = ep;
|
|
ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
|
|
ep_out->bInterval = 1;
|
|
dev_dbg(&intf->dev, ": acceptable outbound endpoint "
|
|
"found\n");
|
|
}
|
|
}
|
|
if (ep_in == NULL) {
|
|
dev_dbg(&intf->dev, ": inbound and/or endpoint not found\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
|
|
maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
|
|
|
|
ir = kzalloc(sizeof(struct mceusb_dev), GFP_KERNEL);
|
|
if (!ir)
|
|
goto mem_alloc_fail;
|
|
|
|
ir->buf_in = usb_alloc_coherent(dev, maxp, GFP_ATOMIC, &ir->dma_in);
|
|
if (!ir->buf_in)
|
|
goto buf_in_alloc_fail;
|
|
|
|
ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
|
|
if (!ir->urb_in)
|
|
goto urb_in_alloc_fail;
|
|
|
|
ir->usbdev = dev;
|
|
ir->dev = &intf->dev;
|
|
ir->len_in = maxp;
|
|
ir->flags.microsoft_gen1 = is_microsoft_gen1;
|
|
ir->flags.tx_mask_inverted = tx_mask_inverted;
|
|
|
|
/* Saving usb interface data for use by the transmitter routine */
|
|
ir->usb_ep_in = ep_in;
|
|
ir->usb_ep_out = ep_out;
|
|
|
|
if (dev->descriptor.iManufacturer
|
|
&& usb_string(dev, dev->descriptor.iManufacturer,
|
|
buf, sizeof(buf)) > 0)
|
|
strlcpy(name, buf, sizeof(name));
|
|
if (dev->descriptor.iProduct
|
|
&& usb_string(dev, dev->descriptor.iProduct,
|
|
buf, sizeof(buf)) > 0)
|
|
snprintf(name + strlen(name), sizeof(name) - strlen(name),
|
|
" %s", buf);
|
|
|
|
ir->idev = mceusb_init_input_dev(ir);
|
|
if (!ir->idev)
|
|
goto input_dev_fail;
|
|
|
|
/* flush buffers on the device */
|
|
mce_sync_in(ir, NULL, maxp);
|
|
mce_sync_in(ir, NULL, maxp);
|
|
|
|
/* wire up inbound data handler */
|
|
usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
|
|
maxp, (usb_complete_t) mceusb_dev_recv, ir, ep_in->bInterval);
|
|
ir->urb_in->transfer_dma = ir->dma_in;
|
|
ir->urb_in->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
/* initialize device */
|
|
if (ir->flags.microsoft_gen1)
|
|
mceusb_gen1_init(ir);
|
|
else if (!is_gen3)
|
|
mceusb_gen2_init(ir);
|
|
|
|
mceusb_get_parameters(ir);
|
|
|
|
mceusb_set_tx_mask(ir, MCE_DEFAULT_TX_MASK);
|
|
|
|
usb_set_intfdata(intf, ir);
|
|
|
|
dev_info(&intf->dev, "Registered %s on usb%d:%d\n", name,
|
|
dev->bus->busnum, dev->devnum);
|
|
|
|
return 0;
|
|
|
|
/* Error-handling path */
|
|
input_dev_fail:
|
|
usb_free_urb(ir->urb_in);
|
|
urb_in_alloc_fail:
|
|
usb_free_coherent(dev, maxp, ir->buf_in, ir->dma_in);
|
|
buf_in_alloc_fail:
|
|
kfree(ir);
|
|
mem_alloc_fail:
|
|
dev_err(&intf->dev, "%s: device setup failed!\n", __func__);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
|
|
static void __devexit mceusb_dev_disconnect(struct usb_interface *intf)
|
|
{
|
|
struct usb_device *dev = interface_to_usbdev(intf);
|
|
struct mceusb_dev *ir = usb_get_intfdata(intf);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
|
|
|
if (!ir)
|
|
return;
|
|
|
|
ir->usbdev = NULL;
|
|
ir_input_unregister(ir->idev);
|
|
usb_kill_urb(ir->urb_in);
|
|
usb_free_urb(ir->urb_in);
|
|
usb_free_coherent(dev, ir->len_in, ir->buf_in, ir->dma_in);
|
|
|
|
kfree(ir);
|
|
}
|
|
|
|
static int mceusb_dev_suspend(struct usb_interface *intf, pm_message_t message)
|
|
{
|
|
struct mceusb_dev *ir = usb_get_intfdata(intf);
|
|
dev_info(ir->dev, "suspend\n");
|
|
usb_kill_urb(ir->urb_in);
|
|
return 0;
|
|
}
|
|
|
|
static int mceusb_dev_resume(struct usb_interface *intf)
|
|
{
|
|
struct mceusb_dev *ir = usb_get_intfdata(intf);
|
|
dev_info(ir->dev, "resume\n");
|
|
if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
|
|
return -EIO;
|
|
return 0;
|
|
}
|
|
|
|
static struct usb_driver mceusb_dev_driver = {
|
|
.name = DRIVER_NAME,
|
|
.probe = mceusb_dev_probe,
|
|
.disconnect = mceusb_dev_disconnect,
|
|
.suspend = mceusb_dev_suspend,
|
|
.resume = mceusb_dev_resume,
|
|
.reset_resume = mceusb_dev_resume,
|
|
.id_table = mceusb_dev_table
|
|
};
|
|
|
|
static int __init mceusb_dev_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = usb_register(&mceusb_dev_driver);
|
|
if (ret < 0)
|
|
printk(KERN_ERR DRIVER_NAME
|
|
": usb register failed, result = %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mceusb_dev_exit(void)
|
|
{
|
|
usb_deregister(&mceusb_dev_driver);
|
|
}
|
|
|
|
module_init(mceusb_dev_init);
|
|
module_exit(mceusb_dev_exit);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(usb, mceusb_dev_table);
|
|
|
|
module_param(debug, bool, S_IRUGO | S_IWUSR);
|
|
MODULE_PARM_DESC(debug, "Debug enabled or not");
|