2 handle em28xx IR remotes via linux kernel input layer.
4 Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it>
5 Markus Rechberger <mrechberger@gmail.com>
6 Mauro Carvalho Chehab <mchehab@infradead.org>
7 Sascha Sommer <saschasommer@freenet.de>
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/delay.h>
27 #include <linux/interrupt.h>
28 #include <linux/input.h>
29 #include <linux/usb.h>
33 static unsigned int ir_debug;
34 module_param(ir_debug, int, 0644);
35 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
37 #define dprintk(fmt, arg...) if (ir_debug) \
38 printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
40 /* ----------------------------------------------------------------------- */
42 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
47 if (1 != i2c_master_recv(&ir->c,&b,1)) {
48 dprintk("read error\n");
52 /* it seems that 0xFE indicates that a button is still hold
53 down, while 0xff indicates that no button is hold
54 down. 0xfe sequences are sometimes interrupted by 0xFF */
56 dprintk("key %02x\n", b);
71 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
77 if (2 != i2c_master_recv(&ir->c,buf,2))
80 /* Does eliminate repeated parity code */
86 /* Rearranges bits to the right order */
87 code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
88 ((buf[0]&0x02)<<3) | /* 0001 0000 */
89 ((buf[0]&0x04)<<1) | /* 0000 1000 */
90 ((buf[0]&0x08)>>1) | /* 0000 0100 */
91 ((buf[0]&0x10)>>3) | /* 0000 0010 */
92 ((buf[0]&0x20)>>5); /* 0000 0001 */
94 dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
102 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
105 unsigned char buf[3];
109 if (3 != i2c_master_recv(&ir->c,buf,3)) {
110 dprintk("read error\n");
114 dprintk("key %02x\n", buf[2]&0x3f);
119 *ir_key = buf[2]&0x3f;
120 *ir_raw = buf[2]&0x3f;
125 /* ----------------------------------------------------------------------