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@brturbo.com.br>
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/moduleparam.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/sched.h>
29 #include <linux/interrupt.h>
30 #include <linux/input.h>
31 #include <linux/usb.h>
35 static unsigned int disable_ir = 0;
36 module_param(disable_ir, int, 0444);
37 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
39 static unsigned int ir_debug = 0;
40 module_param(ir_debug, int, 0644);
41 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
43 #define dprintk(fmt, arg...) if (ir_debug) \
44 printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
46 /* ---------------------------------------------------------------------- */
48 static IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE] = {
49 [ 0x01 ] = KEY_CHANNEL,
50 [ 0x02 ] = KEY_SELECT,
56 [ 0x08 ] = KEY_CHANNELUP,
60 [ 0x0c ] = KEY_CHANNELDOWN,
64 [ 0x10 ] = KEY_VOLUMEUP,
68 [ 0x14 ] = KEY_VOLUMEDOWN,
70 [ 0x18 ] = KEY_RECORD,
71 [ 0x19 ] = KEY_REWIND,
73 [ 0x1b ] = KEY_FORWARD,
74 [ 0x1c ] = KEY_BACKSPACE,
79 /* ----------------------------------------------------------------------- */
81 static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
86 if (1 != i2c_master_recv(&ir->c,&b,1)) {
87 dprintk("read error\n");
91 /* it seems that 0xFE indicates that a button is still hold
92 down, while 0xff indicates that no button is hold
93 down. 0xfe sequences are sometimes interrupted by 0xFF */
95 dprintk("key %02x\n", b);
110 static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
112 unsigned char buf[2];
116 if (2 != i2c_master_recv(&ir->c,buf,2))
119 /* Does eliminate repeated parity code */
123 /* avoid fast reapeating */
128 /* Rearranges bits to the right order */
129 code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
130 ((buf[0]&0x02)<<3) | /* 0001 0000 */
131 ((buf[0]&0x04)<<1) | /* 0000 1000 */
132 ((buf[0]&0x08)>>1) | /* 0000 0100 */
133 ((buf[0]&0x10)>>3) | /* 0000 0010 */
134 ((buf[0]&0x20)>>5); /* 0000 0001 */
136 dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
144 /* ----------------------------------------------------------------------- */
145 void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir)
152 /* detect & configure */
153 switch (dev->model) {
154 case (EM2800_BOARD_UNKNOWN):
156 case (EM2820_BOARD_UNKNOWN):
158 case (EM2800_BOARD_TERRATEC_CINERGY_200):
159 case (EM2820_BOARD_TERRATEC_CINERGY_250):
160 ir->ir_codes = ir_codes_em_terratec;
161 ir->get_key = get_key_terratec;
162 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Terratec)");
164 case (EM2820_BOARD_PINNACLE_USB_2):
166 case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
167 ir->ir_codes = ir_codes_hauppauge_new;
168 ir->get_key = get_key_em_haup;
169 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
171 case (EM2820_BOARD_MSI_VOX_USB_2):
173 case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
175 case (EM2800_BOARD_KWORLD_USB2800):
180 /* ----------------------------------------------------------------------