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1cb26030f3
This is a fix for commit329d88da4d
("[media] media: i2c: Don't export ir-kbd-i2c module alias") that stopped the module from being loaded automagically. The problems described only affect the HD-PVR, so it should not affect other hardware; also if the module happens to be loaded, the i2c IR part of the HD-PVR will be enabled anyway. Fixes:329d88da4d
("[media] media: i2c: Don't export ir-kbd-i2c module alias") Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
954 lines
23 KiB
C
954 lines
23 KiB
C
/*
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*
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* keyboard input driver for i2c IR remote controls
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*
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* Copyright (c) 2000-2003 Gerd Knorr <kraxel@bytesex.org>
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* modified for PixelView (BT878P+W/FM) by
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* Michal Kochanowicz <mkochano@pld.org.pl>
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* Christoph Bartelmus <lirc@bartelmus.de>
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* modified for KNC ONE TV Station/Anubis Typhoon TView Tuner by
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* Ulrich Mueller <ulrich.mueller42@web.de>
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* modified for em2820 based USB TV tuners by
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* Markus Rechberger <mrechberger@gmail.com>
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* modified for DViCO Fusion HDTV 5 RT GOLD by
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* Chaogui Zhang <czhang1974@gmail.com>
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* modified for MSI TV@nywhere Plus by
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* Henry Wong <henry@stuffedcow.net>
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* Mark Schultz <n9xmj@yahoo.com>
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* Brian Rogers <brian_rogers@comcast.net>
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* modified for AVerMedia Cardbus by
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* Oldrich Jedlicka <oldium.pro@seznam.cz>
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* Zilog Transmitter portions/ideas were derived from GPLv2+ sources:
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* - drivers/char/pctv_zilogir.[ch] from Hauppauge Broadway product
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* Copyright 2011 Hauppauge Computer works
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* - drivers/staging/media/lirc/lirc_zilog.c
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* Copyright (c) 2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
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* Michal Kochanowicz <mkochano@pld.org.pl>
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* Christoph Bartelmus <lirc@bartelmus.de>
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* Ulrich Mueller <ulrich.mueller42@web.de>
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* Stefan Jahn <stefan@lkcc.org>
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* Jerome Brock <jbrock@users.sourceforge.net>
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* Thomas Reitmayr (treitmayr@yahoo.com)
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* Mark Weaver <mark@npsl.co.uk>
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* Jarod Wilson <jarod@redhat.com>
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* Copyright (C) 2011 Andy Walls <awalls@md.metrocast.net>
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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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*/
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#include <asm/unaligned.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/workqueue.h>
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#include <media/rc-core.h>
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#include <media/i2c/ir-kbd-i2c.h>
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#define FLAG_TX 1
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#define FLAG_HDPVR 2
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static bool enable_hdpvr;
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module_param(enable_hdpvr, bool, 0644);
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static int get_key_haup_common(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *ptoggle, int size)
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{
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unsigned char buf[6];
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int start, range, toggle, dev, code, ircode, vendor;
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/* poll IR chip */
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if (size != i2c_master_recv(ir->c, buf, size))
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return -EIO;
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if (buf[0] & 0x80) {
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int offset = (size == 6) ? 3 : 0;
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/* split rc5 data block ... */
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start = (buf[offset] >> 7) & 1;
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range = (buf[offset] >> 6) & 1;
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toggle = (buf[offset] >> 5) & 1;
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dev = buf[offset] & 0x1f;
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code = (buf[offset+1] >> 2) & 0x3f;
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/* rc5 has two start bits
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* the first bit must be one
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* the second bit defines the command range:
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* 1 = 0-63, 0 = 64 - 127
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*/
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if (!start)
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/* no key pressed */
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return 0;
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/* filter out invalid key presses */
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ircode = (start << 12) | (toggle << 11) | (dev << 6) | code;
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if ((ircode & 0x1fff) == 0x1fff)
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return 0;
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if (!range)
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code += 64;
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dev_dbg(&ir->rc->dev,
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"ir hauppauge (rc5): s%d r%d t%d dev=%d code=%d\n",
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start, range, toggle, dev, code);
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*protocol = RC_PROTO_RC5;
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*scancode = RC_SCANCODE_RC5(dev, code);
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*ptoggle = toggle;
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return 1;
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} else if (size == 6 && (buf[0] & 0x40)) {
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code = buf[4];
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dev = buf[3];
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vendor = get_unaligned_be16(buf + 1);
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if (vendor == 0x800f) {
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*ptoggle = (dev & 0x80) != 0;
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*protocol = RC_PROTO_RC6_MCE;
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dev &= 0x7f;
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dev_dbg(&ir->rc->dev,
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"ir hauppauge (rc6-mce): t%d vendor=%d dev=%d code=%d\n",
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*ptoggle, vendor, dev, code);
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} else {
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*ptoggle = 0;
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*protocol = RC_PROTO_RC6_6A_32;
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dev_dbg(&ir->rc->dev,
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"ir hauppauge (rc6-6a-32): vendor=%d dev=%d code=%d\n",
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vendor, dev, code);
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}
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*scancode = RC_SCANCODE_RC6_6A(vendor, dev, code);
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return 1;
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}
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return 0;
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}
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static int get_key_haup(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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return get_key_haup_common(ir, protocol, scancode, toggle, 3);
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}
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static int get_key_haup_xvr(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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int ret;
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unsigned char buf[1] = { 0 };
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/*
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* This is the same apparent "are you ready?" poll command observed
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* watching Windows driver traffic and implemented in lirc_zilog. With
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* this added, we get far saner remote behavior with z8 chips on usb
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* connected devices, even with the default polling interval of 100ms.
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*/
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ret = i2c_master_send(ir->c, buf, 1);
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if (ret != 1)
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return (ret < 0) ? ret : -EINVAL;
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return get_key_haup_common(ir, protocol, scancode, toggle, 6);
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}
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static int get_key_pixelview(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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unsigned char b;
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/* poll IR chip */
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if (1 != i2c_master_recv(ir->c, &b, 1)) {
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dev_dbg(&ir->rc->dev, "read error\n");
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return -EIO;
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}
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*protocol = RC_PROTO_OTHER;
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*scancode = b;
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*toggle = 0;
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return 1;
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}
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static int get_key_fusionhdtv(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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unsigned char buf[4];
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/* poll IR chip */
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if (4 != i2c_master_recv(ir->c, buf, 4)) {
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dev_dbg(&ir->rc->dev, "read error\n");
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return -EIO;
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}
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if (buf[0] != 0 || buf[1] != 0 || buf[2] != 0 || buf[3] != 0)
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dev_dbg(&ir->rc->dev, "%s: %*ph\n", __func__, 4, buf);
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/* no key pressed or signal from other ir remote */
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if(buf[0] != 0x1 || buf[1] != 0xfe)
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return 0;
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*protocol = RC_PROTO_UNKNOWN;
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*scancode = buf[2];
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*toggle = 0;
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return 1;
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}
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static int get_key_knc1(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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unsigned char b;
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/* poll IR chip */
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if (1 != i2c_master_recv(ir->c, &b, 1)) {
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dev_dbg(&ir->rc->dev, "read error\n");
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return -EIO;
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}
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/* it seems that 0xFE indicates that a button is still hold
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down, while 0xff indicates that no button is hold
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down. 0xfe sequences are sometimes interrupted by 0xFF */
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dev_dbg(&ir->rc->dev, "key %02x\n", b);
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if (b == 0xff)
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return 0;
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if (b == 0xfe)
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/* keep old data */
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return 1;
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*protocol = RC_PROTO_UNKNOWN;
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*scancode = b;
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*toggle = 0;
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return 1;
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}
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static int get_key_avermedia_cardbus(struct IR_i2c *ir, enum rc_proto *protocol,
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u32 *scancode, u8 *toggle)
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{
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unsigned char subaddr, key, keygroup;
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struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0,
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.buf = &subaddr, .len = 1},
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{ .addr = ir->c->addr, .flags = I2C_M_RD,
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.buf = &key, .len = 1} };
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subaddr = 0x0d;
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if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
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dev_dbg(&ir->rc->dev, "read error\n");
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return -EIO;
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}
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if (key == 0xff)
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return 0;
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subaddr = 0x0b;
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msg[1].buf = &keygroup;
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if (2 != i2c_transfer(ir->c->adapter, msg, 2)) {
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dev_dbg(&ir->rc->dev, "read error\n");
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return -EIO;
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}
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if (keygroup == 0xff)
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return 0;
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dev_dbg(&ir->rc->dev, "read key 0x%02x/0x%02x\n", key, keygroup);
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if (keygroup < 2 || keygroup > 4) {
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dev_warn(&ir->rc->dev, "warning: invalid key group 0x%02x for key 0x%02x\n",
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keygroup, key);
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}
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key |= (keygroup & 1) << 6;
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*protocol = RC_PROTO_UNKNOWN;
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*scancode = key;
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if (ir->c->addr == 0x41) /* AVerMedia EM78P153 */
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*scancode |= keygroup << 8;
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*toggle = 0;
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return 1;
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}
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/* ----------------------------------------------------------------------- */
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static int ir_key_poll(struct IR_i2c *ir)
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{
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enum rc_proto protocol;
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u32 scancode;
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u8 toggle;
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int rc;
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dev_dbg(&ir->rc->dev, "%s\n", __func__);
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rc = ir->get_key(ir, &protocol, &scancode, &toggle);
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if (rc < 0) {
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dev_warn(&ir->rc->dev, "error %d\n", rc);
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return rc;
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}
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if (rc) {
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dev_dbg(&ir->rc->dev, "%s: proto = 0x%04x, scancode = 0x%08x\n",
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__func__, protocol, scancode);
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rc_keydown(ir->rc, protocol, scancode, toggle);
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}
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return 0;
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}
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static void ir_work(struct work_struct *work)
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{
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int rc;
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struct IR_i2c *ir = container_of(work, struct IR_i2c, work.work);
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/*
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* If the transmit code is holding the lock, skip polling for
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* IR, we'll get it to it next time round
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*/
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if (mutex_trylock(&ir->lock)) {
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rc = ir_key_poll(ir);
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mutex_unlock(&ir->lock);
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if (rc == -ENODEV) {
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rc_unregister_device(ir->rc);
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ir->rc = NULL;
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return;
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}
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}
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schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling_interval));
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}
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static int ir_open(struct rc_dev *dev)
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{
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struct IR_i2c *ir = dev->priv;
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schedule_delayed_work(&ir->work, 0);
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return 0;
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}
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static void ir_close(struct rc_dev *dev)
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{
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struct IR_i2c *ir = dev->priv;
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cancel_delayed_work_sync(&ir->work);
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}
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/* Zilog Transmit Interface */
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#define XTAL_FREQ 18432000
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#define ZILOG_SEND 0x80
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#define ZILOG_UIR_END 0x40
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#define ZILOG_INIT_END 0x20
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#define ZILOG_LIR_END 0x10
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#define ZILOG_STATUS_OK 0x80
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#define ZILOG_STATUS_TX 0x40
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#define ZILOG_STATUS_SET 0x20
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/*
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* As you can see here, very few different lengths of pulse and space
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* can be encoded. This means that the hardware does not work well with
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* recorded IR. It's best to work with generated IR, like from ir-ctl or
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* the in-kernel encoders.
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*/
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struct code_block {
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u8 length;
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u16 pulse[7]; /* not aligned */
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u8 carrier_pulse;
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u8 carrier_space;
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u16 space[8]; /* not aligned */
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u8 codes[61];
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u8 csum[2];
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} __packed;
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static int send_data_block(struct IR_i2c *ir, int cmd,
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struct code_block *code_block)
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{
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int i, j, ret;
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u8 buf[5], *p;
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p = &code_block->length;
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for (i = 0; p < code_block->csum; i++)
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code_block->csum[i & 1] ^= *p++;
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p = &code_block->length;
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for (i = 0; i < sizeof(*code_block);) {
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int tosend = sizeof(*code_block) - i;
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if (tosend > 4)
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tosend = 4;
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buf[0] = i + 1;
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for (j = 0; j < tosend; ++j)
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buf[1 + j] = p[i + j];
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dev_dbg(&ir->rc->dev, "%*ph", tosend + 1, buf);
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ret = i2c_master_send(ir->tx_c, buf, tosend + 1);
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if (ret != tosend + 1) {
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dev_dbg(&ir->rc->dev,
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"i2c_master_send failed with %d\n", ret);
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return ret < 0 ? ret : -EIO;
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}
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i += tosend;
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}
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buf[0] = 0;
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buf[1] = cmd;
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ret = i2c_master_send(ir->tx_c, buf, 2);
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if (ret != 2) {
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dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret);
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return ret < 0 ? ret : -EIO;
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}
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usleep_range(2000, 5000);
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ret = i2c_master_send(ir->tx_c, buf, 1);
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if (ret != 1) {
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dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret);
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return ret < 0 ? ret : -EIO;
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}
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return 0;
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}
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static int zilog_init(struct IR_i2c *ir)
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{
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struct code_block code_block = { .length = sizeof(code_block) };
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u8 buf[4];
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int ret;
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put_unaligned_be16(0x1000, &code_block.pulse[3]);
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ret = send_data_block(ir, ZILOG_INIT_END, &code_block);
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if (ret)
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return ret;
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ret = i2c_master_recv(ir->tx_c, buf, 4);
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if (ret != 4) {
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dev_err(&ir->c->dev, "failed to retrieve firmware version: %d\n",
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ret);
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return ret < 0 ? ret : -EIO;
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}
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dev_info(&ir->c->dev, "Zilog/Hauppauge IR blaster firmware version %d.%d.%d\n",
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buf[1], buf[2], buf[3]);
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return 0;
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}
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/*
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* If the last slot for pulse is the same as the current slot for pulse,
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* then use slot no 7.
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*/
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static void copy_codes(u8 *dst, u8 *src, unsigned int count)
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{
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u8 c, last = 0xff;
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while (count--) {
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c = *src++;
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if ((c & 0xf0) == last) {
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*dst++ = 0x70 | (c & 0xf);
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} else {
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*dst++ = c;
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last = c & 0xf0;
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}
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}
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}
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/*
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* When looking for repeats, we don't care about the trailing space. This
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* is set to the shortest possible anyway.
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*/
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static int cmp_no_trail(u8 *a, u8 *b, unsigned int count)
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{
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while (--count) {
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if (*a++ != *b++)
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return 1;
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}
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return (*a & 0xf0) - (*b & 0xf0);
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}
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static int find_slot(u16 *array, unsigned int size, u16 val)
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{
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int i;
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for (i = 0; i < size; i++) {
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if (get_unaligned_be16(&array[i]) == val) {
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return i;
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} else if (!array[i]) {
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put_unaligned_be16(val, &array[i]);
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return i;
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}
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}
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return -1;
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}
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static int zilog_ir_format(struct rc_dev *rcdev, unsigned int *txbuf,
|
|
unsigned int count, struct code_block *code_block)
|
|
{
|
|
struct IR_i2c *ir = rcdev->priv;
|
|
int rep, i, l, p = 0, s, c = 0;
|
|
bool repeating;
|
|
u8 codes[174];
|
|
|
|
code_block->carrier_pulse = DIV_ROUND_CLOSEST(
|
|
ir->duty_cycle * XTAL_FREQ / 1000, ir->carrier);
|
|
code_block->carrier_space = DIV_ROUND_CLOSEST(
|
|
(100 - ir->duty_cycle) * XTAL_FREQ / 1000, ir->carrier);
|
|
|
|
for (i = 0; i < count; i++) {
|
|
if (c >= ARRAY_SIZE(codes) - 1) {
|
|
dev_warn(&rcdev->dev, "IR too long, cannot transmit\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Lengths more than 142220us cannot be encoded; also
|
|
* this checks for multiply overflow
|
|
*/
|
|
if (txbuf[i] > 142220)
|
|
return -EINVAL;
|
|
|
|
l = DIV_ROUND_CLOSEST((XTAL_FREQ / 1000) * txbuf[i], 40000);
|
|
|
|
if (i & 1) {
|
|
s = find_slot(code_block->space,
|
|
ARRAY_SIZE(code_block->space), l);
|
|
if (s == -1) {
|
|
dev_warn(&rcdev->dev, "Too many different lengths spaces, cannot transmit");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* We have a pulse and space */
|
|
codes[c++] = (p << 4) | s;
|
|
} else {
|
|
p = find_slot(code_block->pulse,
|
|
ARRAY_SIZE(code_block->pulse), l);
|
|
if (p == -1) {
|
|
dev_warn(&rcdev->dev, "Too many different lengths pulses, cannot transmit");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We have to encode the trailing pulse. Find the shortest space */
|
|
s = 0;
|
|
for (i = 1; i < ARRAY_SIZE(code_block->space); i++) {
|
|
u16 d = get_unaligned_be16(&code_block->space[i]);
|
|
|
|
if (get_unaligned_be16(&code_block->space[s]) > d)
|
|
s = i;
|
|
}
|
|
|
|
codes[c++] = (p << 4) | s;
|
|
|
|
dev_dbg(&rcdev->dev, "generated %d codes\n", c);
|
|
|
|
/*
|
|
* Are the last N codes (so pulse + space) repeating 3 times?
|
|
* if so we can shorten the codes list and use code 0xc0 to repeat
|
|
* them.
|
|
*/
|
|
repeating = false;
|
|
|
|
for (rep = c / 3; rep >= 1; rep--) {
|
|
if (!memcmp(&codes[c - rep * 3], &codes[c - rep * 2], rep) &&
|
|
!cmp_no_trail(&codes[c - rep], &codes[c - rep * 2], rep)) {
|
|
repeating = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (repeating) {
|
|
/* first copy any leading non-repeating */
|
|
int leading = c - rep * 3;
|
|
|
|
if (leading + rep >= ARRAY_SIZE(code_block->codes) - 3) {
|
|
dev_warn(&rcdev->dev, "IR too long, cannot transmit\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(&rcdev->dev, "found trailing %d repeat\n", rep);
|
|
copy_codes(code_block->codes, codes, leading);
|
|
code_block->codes[leading] = 0x82;
|
|
copy_codes(code_block->codes + leading + 1, codes + leading,
|
|
rep);
|
|
c = leading + 1 + rep;
|
|
code_block->codes[c++] = 0xc0;
|
|
} else {
|
|
if (c >= ARRAY_SIZE(code_block->codes) - 3) {
|
|
dev_warn(&rcdev->dev, "IR too long, cannot transmit\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
dev_dbg(&rcdev->dev, "found no trailing repeat\n");
|
|
code_block->codes[0] = 0x82;
|
|
copy_codes(code_block->codes + 1, codes, c);
|
|
c++;
|
|
code_block->codes[c++] = 0xc4;
|
|
}
|
|
|
|
while (c < ARRAY_SIZE(code_block->codes))
|
|
code_block->codes[c++] = 0x83;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zilog_tx(struct rc_dev *rcdev, unsigned int *txbuf,
|
|
unsigned int count)
|
|
{
|
|
struct IR_i2c *ir = rcdev->priv;
|
|
struct code_block code_block = { .length = sizeof(code_block) };
|
|
u8 buf[2];
|
|
int ret, i;
|
|
|
|
ret = zilog_ir_format(rcdev, txbuf, count, &code_block);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = mutex_lock_interruptible(&ir->lock);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = send_data_block(ir, ZILOG_UIR_END, &code_block);
|
|
if (ret)
|
|
goto out_unlock;
|
|
|
|
ret = i2c_master_recv(ir->tx_c, buf, 1);
|
|
if (ret != 1) {
|
|
dev_err(&ir->rc->dev, "i2c_master_recv failed with %d\n", ret);
|
|
goto out_unlock;
|
|
}
|
|
|
|
dev_dbg(&ir->rc->dev, "code set status: %02x\n", buf[0]);
|
|
|
|
if (buf[0] != (ZILOG_STATUS_OK | ZILOG_STATUS_SET)) {
|
|
dev_err(&ir->rc->dev, "unexpected IR TX response %02x\n",
|
|
buf[0]);
|
|
ret = -EIO;
|
|
goto out_unlock;
|
|
}
|
|
|
|
buf[0] = 0x00;
|
|
buf[1] = ZILOG_SEND;
|
|
|
|
ret = i2c_master_send(ir->tx_c, buf, 2);
|
|
if (ret != 2) {
|
|
dev_err(&ir->rc->dev, "i2c_master_send failed with %d\n", ret);
|
|
if (ret >= 0)
|
|
ret = -EIO;
|
|
goto out_unlock;
|
|
}
|
|
|
|
dev_dbg(&ir->rc->dev, "send command sent\n");
|
|
|
|
/*
|
|
* This bit NAKs until the device is ready, so we retry it
|
|
* sleeping a bit each time. This seems to be what the windows
|
|
* driver does, approximately.
|
|
* Try for up to 1s.
|
|
*/
|
|
for (i = 0; i < 20; ++i) {
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
|
schedule_timeout(msecs_to_jiffies(50));
|
|
ret = i2c_master_send(ir->tx_c, buf, 1);
|
|
if (ret == 1)
|
|
break;
|
|
dev_dbg(&ir->rc->dev,
|
|
"NAK expected: i2c_master_send failed with %d (try %d)\n",
|
|
ret, i + 1);
|
|
}
|
|
|
|
if (ret != 1) {
|
|
dev_err(&ir->rc->dev,
|
|
"IR TX chip never got ready: last i2c_master_send failed with %d\n",
|
|
ret);
|
|
if (ret >= 0)
|
|
ret = -EIO;
|
|
goto out_unlock;
|
|
}
|
|
|
|
i = i2c_master_recv(ir->tx_c, buf, 1);
|
|
if (i != 1) {
|
|
dev_err(&ir->rc->dev, "i2c_master_recv failed with %d\n", ret);
|
|
ret = -EIO;
|
|
goto out_unlock;
|
|
} else if (buf[0] != ZILOG_STATUS_OK) {
|
|
dev_err(&ir->rc->dev, "unexpected IR TX response #2: %02x\n",
|
|
buf[0]);
|
|
ret = -EIO;
|
|
goto out_unlock;
|
|
}
|
|
dev_dbg(&ir->rc->dev, "transmit complete\n");
|
|
|
|
/* Oh good, it worked */
|
|
ret = count;
|
|
out_unlock:
|
|
mutex_unlock(&ir->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int zilog_tx_carrier(struct rc_dev *dev, u32 carrier)
|
|
{
|
|
struct IR_i2c *ir = dev->priv;
|
|
|
|
if (carrier > 500000 || carrier < 20000)
|
|
return -EINVAL;
|
|
|
|
ir->carrier = carrier;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zilog_tx_duty_cycle(struct rc_dev *dev, u32 duty_cycle)
|
|
{
|
|
struct IR_i2c *ir = dev->priv;
|
|
|
|
ir->duty_cycle = duty_cycle;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ir_probe(struct i2c_client *client, const struct i2c_device_id *id)
|
|
{
|
|
char *ir_codes = NULL;
|
|
const char *name = NULL;
|
|
u64 rc_proto = RC_PROTO_BIT_UNKNOWN;
|
|
struct IR_i2c *ir;
|
|
struct rc_dev *rc = NULL;
|
|
struct i2c_adapter *adap = client->adapter;
|
|
unsigned short addr = client->addr;
|
|
int err;
|
|
|
|
if ((id->driver_data & FLAG_HDPVR) && !enable_hdpvr) {
|
|
dev_err(&client->dev, "IR for HDPVR is known to cause problems during recording, use enable_hdpvr modparam to enable\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ir = devm_kzalloc(&client->dev, sizeof(*ir), GFP_KERNEL);
|
|
if (!ir)
|
|
return -ENOMEM;
|
|
|
|
ir->c = client;
|
|
ir->polling_interval = DEFAULT_POLLING_INTERVAL;
|
|
i2c_set_clientdata(client, ir);
|
|
|
|
switch(addr) {
|
|
case 0x64:
|
|
name = "Pixelview";
|
|
ir->get_key = get_key_pixelview;
|
|
rc_proto = RC_PROTO_BIT_OTHER;
|
|
ir_codes = RC_MAP_EMPTY;
|
|
break;
|
|
case 0x18:
|
|
case 0x1f:
|
|
case 0x1a:
|
|
name = "Hauppauge";
|
|
ir->get_key = get_key_haup;
|
|
rc_proto = RC_PROTO_BIT_RC5;
|
|
ir_codes = RC_MAP_HAUPPAUGE;
|
|
break;
|
|
case 0x30:
|
|
name = "KNC One";
|
|
ir->get_key = get_key_knc1;
|
|
rc_proto = RC_PROTO_BIT_OTHER;
|
|
ir_codes = RC_MAP_EMPTY;
|
|
break;
|
|
case 0x6b:
|
|
name = "FusionHDTV";
|
|
ir->get_key = get_key_fusionhdtv;
|
|
rc_proto = RC_PROTO_BIT_UNKNOWN;
|
|
ir_codes = RC_MAP_FUSIONHDTV_MCE;
|
|
break;
|
|
case 0x40:
|
|
name = "AVerMedia Cardbus remote";
|
|
ir->get_key = get_key_avermedia_cardbus;
|
|
rc_proto = RC_PROTO_BIT_OTHER;
|
|
ir_codes = RC_MAP_AVERMEDIA_CARDBUS;
|
|
break;
|
|
case 0x41:
|
|
name = "AVerMedia EM78P153";
|
|
ir->get_key = get_key_avermedia_cardbus;
|
|
rc_proto = RC_PROTO_BIT_OTHER;
|
|
/* RM-KV remote, seems to be same as RM-K6 */
|
|
ir_codes = RC_MAP_AVERMEDIA_M733A_RM_K6;
|
|
break;
|
|
case 0x71:
|
|
name = "Hauppauge/Zilog Z8";
|
|
ir->get_key = get_key_haup_xvr;
|
|
rc_proto = RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RC6_MCE |
|
|
RC_PROTO_BIT_RC6_6A_32;
|
|
ir_codes = RC_MAP_HAUPPAUGE;
|
|
break;
|
|
}
|
|
|
|
/* Let the caller override settings */
|
|
if (client->dev.platform_data) {
|
|
const struct IR_i2c_init_data *init_data =
|
|
client->dev.platform_data;
|
|
|
|
ir_codes = init_data->ir_codes;
|
|
rc = init_data->rc_dev;
|
|
|
|
name = init_data->name;
|
|
if (init_data->type)
|
|
rc_proto = init_data->type;
|
|
|
|
if (init_data->polling_interval)
|
|
ir->polling_interval = init_data->polling_interval;
|
|
|
|
switch (init_data->internal_get_key_func) {
|
|
case IR_KBD_GET_KEY_CUSTOM:
|
|
/* The bridge driver provided us its own function */
|
|
ir->get_key = init_data->get_key;
|
|
break;
|
|
case IR_KBD_GET_KEY_PIXELVIEW:
|
|
ir->get_key = get_key_pixelview;
|
|
break;
|
|
case IR_KBD_GET_KEY_HAUP:
|
|
ir->get_key = get_key_haup;
|
|
break;
|
|
case IR_KBD_GET_KEY_KNC1:
|
|
ir->get_key = get_key_knc1;
|
|
break;
|
|
case IR_KBD_GET_KEY_FUSIONHDTV:
|
|
ir->get_key = get_key_fusionhdtv;
|
|
break;
|
|
case IR_KBD_GET_KEY_HAUP_XVR:
|
|
ir->get_key = get_key_haup_xvr;
|
|
break;
|
|
case IR_KBD_GET_KEY_AVERMEDIA_CARDBUS:
|
|
ir->get_key = get_key_avermedia_cardbus;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!rc) {
|
|
/*
|
|
* If platform_data doesn't specify rc_dev, initialize it
|
|
* internally
|
|
*/
|
|
rc = rc_allocate_device(RC_DRIVER_SCANCODE);
|
|
if (!rc)
|
|
return -ENOMEM;
|
|
}
|
|
ir->rc = rc;
|
|
|
|
/* Make sure we are all setup before going on */
|
|
if (!name || !ir->get_key || !rc_proto || !ir_codes) {
|
|
dev_warn(&client->dev, "Unsupported device at address 0x%02x\n",
|
|
addr);
|
|
err = -ENODEV;
|
|
goto err_out_free;
|
|
}
|
|
|
|
ir->ir_codes = ir_codes;
|
|
|
|
snprintf(ir->phys, sizeof(ir->phys), "%s/%s", dev_name(&adap->dev),
|
|
dev_name(&client->dev));
|
|
|
|
/*
|
|
* Initialize input_dev fields
|
|
* It doesn't make sense to allow overriding them via platform_data
|
|
*/
|
|
rc->input_id.bustype = BUS_I2C;
|
|
rc->input_phys = ir->phys;
|
|
rc->device_name = name;
|
|
rc->dev.parent = &client->dev;
|
|
rc->priv = ir;
|
|
rc->open = ir_open;
|
|
rc->close = ir_close;
|
|
|
|
/*
|
|
* Initialize the other fields of rc_dev
|
|
*/
|
|
rc->map_name = ir->ir_codes;
|
|
rc->allowed_protocols = rc_proto;
|
|
if (!rc->driver_name)
|
|
rc->driver_name = KBUILD_MODNAME;
|
|
|
|
mutex_init(&ir->lock);
|
|
|
|
INIT_DELAYED_WORK(&ir->work, ir_work);
|
|
|
|
if (id->driver_data & FLAG_TX) {
|
|
ir->tx_c = i2c_new_dummy(client->adapter, 0x70);
|
|
if (!ir->tx_c) {
|
|
dev_err(&client->dev, "failed to setup tx i2c address");
|
|
} else if (!zilog_init(ir)) {
|
|
ir->carrier = 38000;
|
|
ir->duty_cycle = 40;
|
|
rc->tx_ir = zilog_tx;
|
|
rc->s_tx_carrier = zilog_tx_carrier;
|
|
rc->s_tx_duty_cycle = zilog_tx_duty_cycle;
|
|
}
|
|
}
|
|
|
|
err = rc_register_device(rc);
|
|
if (err)
|
|
goto err_out_free;
|
|
|
|
return 0;
|
|
|
|
err_out_free:
|
|
if (ir->tx_c)
|
|
i2c_unregister_device(ir->tx_c);
|
|
|
|
/* Only frees rc if it were allocated internally */
|
|
rc_free_device(rc);
|
|
return err;
|
|
}
|
|
|
|
static int ir_remove(struct i2c_client *client)
|
|
{
|
|
struct IR_i2c *ir = i2c_get_clientdata(client);
|
|
|
|
/* kill outstanding polls */
|
|
cancel_delayed_work_sync(&ir->work);
|
|
|
|
if (ir->tx_c)
|
|
i2c_unregister_device(ir->tx_c);
|
|
|
|
/* unregister device */
|
|
rc_unregister_device(ir->rc);
|
|
|
|
/* free memory */
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ir_kbd_id[] = {
|
|
/* Generic entry for any IR receiver */
|
|
{ "ir_video", 0 },
|
|
/* IR device specific entries should be added here */
|
|
{ "ir_z8f0811_haup", FLAG_TX },
|
|
{ "ir_z8f0811_hdpvr", FLAG_TX | FLAG_HDPVR },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ir_kbd_id);
|
|
|
|
static struct i2c_driver ir_kbd_driver = {
|
|
.driver = {
|
|
.name = "ir-kbd-i2c",
|
|
},
|
|
.probe = ir_probe,
|
|
.remove = ir_remove,
|
|
.id_table = ir_kbd_id,
|
|
};
|
|
|
|
module_i2c_driver(ir_kbd_driver);
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
|
|
MODULE_DESCRIPTION("input driver for i2c IR remote controls");
|
|
MODULE_LICENSE("GPL");
|