2005-04-16 22:20:36 +00:00
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/*
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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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2005-11-09 05:37:21 +00:00
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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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2005-04-16 22:20:36 +00:00
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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/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/sched.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 <asm/semaphore.h>
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2005-12-12 08:37:28 +00:00
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2005-04-16 22:20:36 +00:00
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#include <media/ir-common.h>
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2005-11-09 05:37:32 +00:00
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#include <media/ir-kbd-i2c.h>
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2005-11-09 05:37:21 +00:00
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2005-04-16 22:20:36 +00:00
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/* Mark Phalan <phalanm@o2.ie> */
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static IR_KEYTAB_TYPE ir_codes_pv951[IR_KEYTAB_SIZE] = {
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2005-11-09 05:37:32 +00:00
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[ 0 ] = KEY_KP0,
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[ 1 ] = KEY_KP1,
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[ 2 ] = KEY_KP2,
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[ 3 ] = KEY_KP3,
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[ 4 ] = KEY_KP4,
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[ 5 ] = KEY_KP5,
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[ 6 ] = KEY_KP6,
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[ 7 ] = KEY_KP7,
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[ 8 ] = KEY_KP8,
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[ 9 ] = KEY_KP9,
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[ 18 ] = KEY_POWER,
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[ 16 ] = KEY_MUTE,
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[ 31 ] = KEY_VOLUMEDOWN,
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[ 27 ] = KEY_VOLUMEUP,
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[ 26 ] = KEY_CHANNELUP,
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[ 30 ] = KEY_CHANNELDOWN,
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[ 14 ] = KEY_PAGEUP,
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[ 29 ] = KEY_PAGEDOWN,
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[ 19 ] = KEY_SOUND,
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[ 24 ] = KEY_KPPLUSMINUS, /* CH +/- */
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[ 22 ] = KEY_SUBTITLE, /* CC */
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[ 13 ] = KEY_TEXT, /* TTX */
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[ 11 ] = KEY_TV, /* AIR/CBL */
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[ 17 ] = KEY_PC, /* PC/TV */
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[ 23 ] = KEY_OK, /* CH RTN */
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[ 25 ] = KEY_MODE, /* FUNC */
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[ 12 ] = KEY_SEARCH, /* AUTOSCAN */
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2005-04-16 22:20:36 +00:00
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/* Not sure what to do with these ones! */
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2005-11-09 05:37:32 +00:00
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[ 15 ] = KEY_SELECT, /* SOURCE */
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[ 10 ] = KEY_KPPLUS, /* +100 */
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[ 20 ] = KEY_KPEQUAL, /* SYNC */
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[ 28 ] = KEY_MEDIA, /* PC/TV */
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2005-04-16 22:20:36 +00:00
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};
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/* ----------------------------------------------------------------------- */
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/* insmod parameters */
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static int debug;
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module_param(debug, int, 0644); /* debug level (0,1,2) */
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#define DEVNAME "ir-kbd-i2c"
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#define dprintk(level, fmt, arg...) if (debug >= level) \
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printk(KERN_DEBUG DEVNAME ": " fmt , ## arg)
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/* ----------------------------------------------------------------------- */
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2005-11-09 05:37:32 +00:00
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static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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2005-04-16 22:20:36 +00:00
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{
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unsigned char buf[3];
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int start, toggle, dev, code;
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/* poll IR chip */
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if (3 != i2c_master_recv(&ir->c,buf,3))
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return -EIO;
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/* split rc5 data block ... */
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start = (buf[0] >> 6) & 3;
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toggle = (buf[0] >> 5) & 1;
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dev = buf[0] & 0x1f;
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code = (buf[1] >> 2) & 0x3f;
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if (3 != start)
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/* no key pressed */
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return 0;
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dprintk(1,"ir hauppauge (rc5): s%d t%d dev=%d code=%d\n",
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start, toggle, dev, code);
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/* return key */
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*ir_key = code;
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*ir_raw = (start << 12) | (toggle << 11) | (dev << 6) | code;
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return 1;
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}
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2005-11-09 05:37:32 +00:00
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static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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2005-04-16 22:20:36 +00:00
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{
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2005-11-09 05:37:43 +00:00
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unsigned char b;
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2005-04-16 22:20:36 +00:00
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/* poll IR chip */
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if (1 != i2c_master_recv(&ir->c,&b,1)) {
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dprintk(1,"read error\n");
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return -EIO;
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}
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*ir_key = b;
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*ir_raw = b;
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return 1;
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}
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2005-11-09 05:37:32 +00:00
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static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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2005-04-16 22:20:36 +00:00
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{
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2005-11-09 05:37:43 +00:00
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unsigned char b;
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2005-04-16 22:20:36 +00:00
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/* poll IR chip */
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if (1 != i2c_master_recv(&ir->c,&b,1)) {
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dprintk(1,"read error\n");
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return -EIO;
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}
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/* ignore 0xaa */
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if (b==0xaa)
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return 0;
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dprintk(2,"key %02x\n", b);
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*ir_key = b;
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*ir_raw = b;
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return 1;
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}
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2005-11-09 05:37:32 +00:00
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static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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2005-04-16 22:20:36 +00:00
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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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dprintk(1,"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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2005-11-09 05:37:36 +00:00
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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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2005-04-16 22:20:36 +00:00
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dprintk(2,"key %02x\n", b);
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2005-11-09 05:37:36 +00:00
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if (b == 0xff)
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2005-04-16 22:20:36 +00:00
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return 0;
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2005-11-09 05:37:36 +00:00
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if (b == 0xfe)
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2005-04-16 22:20:36 +00:00
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/* keep old data */
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return 1;
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*ir_key = b;
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*ir_raw = b;
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return 1;
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}
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2005-11-14 00:07:49 +00:00
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/* The new pinnacle PCTV remote (with the colored buttons)
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*
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* Ricardo Cerqueira <v4l@cerqueira.org>
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*/
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int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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{
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unsigned char b[4];
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unsigned int start = 0,parity = 0,code = 0;
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/* poll IR chip */
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if (4 != i2c_master_recv(&ir->c,b,4)) {
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dprintk(2,"read error\n");
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return -EIO;
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}
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for (start = 0; start<4; start++) {
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if (b[start] == 0x80) {
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code=b[(start+3)%4];
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parity=b[(start+2)%4];
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}
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}
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/* Empty Request */
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if (parity==0)
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return 0;
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/* Repeating... */
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if (ir->old == parity)
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return 0;
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ir->old = parity;
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/* Reduce code value to fit inside IR_KEYTAB_SIZE
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*
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* this is the only value that results in 42 unique
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* codes < 128
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*/
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code %= 0x88;
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*ir_raw = code;
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*ir_key = code;
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dprintk(1,"Pinnacle PCTV key %02x\n", code);
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return 1;
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}
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EXPORT_SYMBOL_GPL(get_key_pinnacle);
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2005-04-16 22:20:36 +00:00
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/* ----------------------------------------------------------------------- */
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2005-11-09 05:37:32 +00:00
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static void ir_key_poll(struct IR_i2c *ir)
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2005-04-16 22:20:36 +00:00
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{
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static u32 ir_key, ir_raw;
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int rc;
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dprintk(2,"ir_poll_key\n");
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rc = ir->get_key(ir, &ir_key, &ir_raw);
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if (rc < 0) {
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dprintk(2,"error\n");
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return;
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}
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if (0 == rc) {
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2005-09-15 07:01:53 +00:00
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ir_input_nokey(ir->input, &ir->ir);
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2005-04-16 22:20:36 +00:00
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} else {
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2005-09-15 07:01:53 +00:00
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ir_input_keydown(ir->input, &ir->ir, ir_key, ir_raw);
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2005-04-16 22:20:36 +00:00
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}
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}
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static void ir_timer(unsigned long data)
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{
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2005-11-09 05:37:32 +00:00
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struct IR_i2c *ir = (struct IR_i2c*)data;
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2005-04-16 22:20:36 +00:00
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schedule_work(&ir->work);
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}
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static void ir_work(void *data)
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{
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2005-11-09 05:37:32 +00:00
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struct IR_i2c *ir = data;
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2005-04-16 22:20:36 +00:00
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ir_key_poll(ir);
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mod_timer(&ir->timer, jiffies+HZ/10);
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}
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/* ----------------------------------------------------------------------- */
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static int ir_attach(struct i2c_adapter *adap, int addr,
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unsigned short flags, int kind);
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static int ir_detach(struct i2c_client *client);
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static int ir_probe(struct i2c_adapter *adap);
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static struct i2c_driver driver = {
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2005-11-09 05:37:43 +00:00
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.name = "ir remote kbd driver",
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2005-12-01 08:51:35 +00:00
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.id = I2C_DRIVERID_I2C_IR,
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2005-11-09 05:37:43 +00:00
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.flags = I2C_DF_NOTIFY,
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.attach_adapter = ir_probe,
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.detach_client = ir_detach,
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2005-04-16 22:20:36 +00:00
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};
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static struct i2c_client client_template =
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{
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2005-11-09 05:37:43 +00:00
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.name = "unset",
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.driver = &driver
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2005-04-16 22:20:36 +00:00
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};
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static int ir_attach(struct i2c_adapter *adap, int addr,
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unsigned short flags, int kind)
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{
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IR_KEYTAB_TYPE *ir_codes = NULL;
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char *name;
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int ir_type;
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2005-12-12 08:37:27 +00:00
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struct IR_i2c *ir;
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2005-09-15 07:01:53 +00:00
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struct input_dev *input_dev;
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2005-04-16 22:20:36 +00:00
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2005-12-12 08:37:28 +00:00
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ir = kzalloc(sizeof(struct IR_i2c),GFP_KERNEL);
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2005-09-15 07:01:53 +00:00
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input_dev = input_allocate_device();
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if (!ir || !input_dev) {
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kfree(ir);
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input_free_device(input_dev);
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2005-12-12 08:37:27 +00:00
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return -ENOMEM;
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2005-09-15 07:01:53 +00:00
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}
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2005-04-16 22:20:36 +00:00
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ir->c = client_template;
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2005-09-15 07:01:53 +00:00
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ir->input = input_dev;
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2005-04-16 22:20:36 +00:00
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i2c_set_clientdata(&ir->c, ir);
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ir->c.adapter = adap;
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ir->c.addr = addr;
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switch(addr) {
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case 0x64:
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name = "Pixelview";
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ir->get_key = get_key_pixelview;
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ir_type = IR_TYPE_OTHER;
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ir_codes = ir_codes_empty;
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break;
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case 0x4b:
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name = "PV951";
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ir->get_key = get_key_pv951;
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ir_type = IR_TYPE_OTHER;
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ir_codes = ir_codes_pv951;
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break;
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case 0x18:
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case 0x1a:
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name = "Hauppauge";
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ir->get_key = get_key_haup;
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ir_type = IR_TYPE_RC5;
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ir_codes = ir_codes_rc5_tv;
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break;
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case 0x30:
|
2005-11-09 05:37:32 +00:00
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name = "KNC One";
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|
|
ir->get_key = get_key_knc1;
|
|
|
|
ir_type = IR_TYPE_OTHER;
|
|
|
|
ir_codes = ir_codes_empty;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
case 0x7a:
|
2005-11-09 05:37:56 +00:00
|
|
|
case 0x47:
|
|
|
|
/* Handled by saa7134-input */
|
|
|
|
name = "SAA713x remote";
|
2005-11-09 05:37:32 +00:00
|
|
|
ir_type = IR_TYPE_OTHER;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* shouldn't happen */
|
|
|
|
printk(DEVNAME ": Huh? unknown i2c address (0x%02x)?\n",addr);
|
|
|
|
kfree(ir);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2005-11-09 05:37:56 +00:00
|
|
|
/* Sets name */
|
2005-04-16 22:20:36 +00:00
|
|
|
snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (%s)", name);
|
2005-11-09 05:37:32 +00:00
|
|
|
ir->ir_codes=ir_codes;
|
|
|
|
|
|
|
|
/* register i2c device
|
|
|
|
* At device register, IR codes may be changed to be
|
|
|
|
* board dependent.
|
2005-12-12 08:37:28 +00:00
|
|
|
*/
|
2005-11-09 05:37:32 +00:00
|
|
|
i2c_attach_client(&ir->c);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-11-09 05:37:56 +00:00
|
|
|
/* If IR not supported or disabled, unregisters driver */
|
|
|
|
if (ir->get_key == NULL) {
|
|
|
|
i2c_detach_client(&ir->c);
|
|
|
|
kfree(ir);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Phys addr can only be set after attaching (for ir->c.dev.bus_id) */
|
|
|
|
snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
|
|
|
|
ir->c.adapter->dev.bus_id,
|
|
|
|
ir->c.dev.bus_id);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* init + register input device */
|
2005-09-15 07:01:53 +00:00
|
|
|
ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
|
|
|
|
input_dev->id.bustype = BUS_I2C;
|
|
|
|
input_dev->name = ir->c.name;
|
|
|
|
input_dev->phys = ir->phys;
|
|
|
|
|
2005-11-09 05:37:32 +00:00
|
|
|
/* register event device */
|
2005-09-15 07:01:53 +00:00
|
|
|
input_register_device(ir->input);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* start polling via eventd */
|
|
|
|
INIT_WORK(&ir->work, ir_work, ir);
|
|
|
|
init_timer(&ir->timer);
|
|
|
|
ir->timer.function = ir_timer;
|
|
|
|
ir->timer.data = (unsigned long)ir;
|
|
|
|
schedule_work(&ir->work);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ir_detach(struct i2c_client *client)
|
|
|
|
{
|
2005-11-09 05:37:43 +00:00
|
|
|
struct IR_i2c *ir = i2c_get_clientdata(client);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* kill outstanding polls */
|
|
|
|
del_timer(&ir->timer);
|
|
|
|
flush_scheduled_work();
|
|
|
|
|
|
|
|
/* unregister devices */
|
2005-09-15 07:01:53 +00:00
|
|
|
input_unregister_device(ir->input);
|
2005-04-16 22:20:36 +00:00
|
|
|
i2c_detach_client(&ir->c);
|
|
|
|
|
|
|
|
/* free memory */
|
|
|
|
kfree(ir);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int ir_probe(struct i2c_adapter *adap)
|
|
|
|
{
|
|
|
|
|
|
|
|
/* The external IR receiver is at i2c address 0x34 (0x35 for
|
|
|
|
reads). Future Hauppauge cards will have an internal
|
|
|
|
receiver at 0x30 (0x31 for reads). In theory, both can be
|
|
|
|
fitted, and Hauppauge suggest an external overrides an
|
|
|
|
internal.
|
|
|
|
|
|
|
|
That's why we probe 0x1a (~0x34) first. CB
|
|
|
|
*/
|
|
|
|
|
|
|
|
static const int probe_bttv[] = { 0x1a, 0x18, 0x4b, 0x64, 0x30, -1};
|
2005-11-09 05:37:51 +00:00
|
|
|
static const int probe_saa7134[] = { 0x7a, 0x47, -1 };
|
2005-11-09 05:38:37 +00:00
|
|
|
static const int probe_em28XX[] = { 0x30, 0x47, -1 };
|
2005-04-16 22:20:36 +00:00
|
|
|
const int *probe = NULL;
|
2005-11-09 05:37:36 +00:00
|
|
|
struct i2c_client c;
|
|
|
|
unsigned char buf;
|
|
|
|
int i,rc;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
switch (adap->id) {
|
2005-08-11 21:41:56 +00:00
|
|
|
case I2C_HW_B_BT848:
|
2005-04-16 22:20:36 +00:00
|
|
|
probe = probe_bttv;
|
|
|
|
break;
|
2005-08-11 21:51:10 +00:00
|
|
|
case I2C_HW_SAA7134:
|
2005-04-16 22:20:36 +00:00
|
|
|
probe = probe_saa7134;
|
|
|
|
break;
|
2005-11-09 05:38:37 +00:00
|
|
|
case I2C_HW_B_EM28XX:
|
|
|
|
probe = probe_em28XX;
|
2005-11-09 05:37:21 +00:00
|
|
|
break;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
if (NULL == probe)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
memset(&c,0,sizeof(c));
|
|
|
|
c.adapter = adap;
|
2005-11-09 05:37:32 +00:00
|
|
|
for (i = 0; -1 != probe[i]; i++) {
|
2005-04-16 22:20:36 +00:00
|
|
|
c.addr = probe[i];
|
2005-11-09 05:37:32 +00:00
|
|
|
rc = i2c_master_recv(&c,&buf,0);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk(1,"probe 0x%02x @ %s: %s\n",
|
|
|
|
probe[i], adap->name,
|
2005-11-09 05:37:32 +00:00
|
|
|
(0 == rc) ? "yes" : "no");
|
|
|
|
if (0 == rc) {
|
|
|
|
ir_attach(adap,probe[i],0,0);
|
|
|
|
break;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Gerd Knorr, Michal Kochanowicz, Christoph Bartelmus, Ulrich Mueller");
|
|
|
|
MODULE_DESCRIPTION("input driver for i2c IR remote controls");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
static int __init ir_init(void)
|
|
|
|
{
|
|
|
|
return i2c_add_driver(&driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit ir_fini(void)
|
|
|
|
{
|
|
|
|
i2c_del_driver(&driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(ir_init);
|
|
|
|
module_exit(ir_fini);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
|
|
* ---------------------------------------------------------------------------
|
|
|
|
* Local variables:
|
|
|
|
* c-basic-offset: 8
|
|
|
|
* End:
|
|
|
|
*/
|