3 * handle saa7134 IR remotes via linux kernel input layer.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/module.h>
22 #include <linux/moduleparam.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/sched.h>
26 #include <linux/interrupt.h>
27 #include <linux/input.h>
28 #include <linux/usb.h>
32 static unsigned int disable_ir = 0;
33 module_param(disable_ir, int, 0444);
34 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
36 static unsigned int ir_debug = 0;
37 module_param(ir_debug, int, 0644);
38 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
40 #define dprintk(fmt, arg...) if (ir_debug) \
41 printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
43 /* ---------------------------------------------------------------------- */
45 static IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE] = {
46 [ 0x01 ] = KEY_CHANNEL,
47 [ 0x02 ] = KEY_SELECT,
53 [ 0x08 ] = KEY_CHANNELUP,
57 [ 0x0c ] = KEY_CHANNELDOWN,
61 [ 0x10 ] = KEY_VOLUMEUP,
65 [ 0x14 ] = KEY_VOLUMEDOWN,
67 [ 0x18 ] = KEY_RECORD,
68 [ 0x19 ] = KEY_REWIND,
70 [ 0x1b ] = KEY_FORWARD,
71 [ 0x1c ] = KEY_BACKSPACE,
76 /* ----------------------------------------------------------------------- */
78 static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
83 if (1 != i2c_master_recv(&ir->c,&b,1)) {
84 dprintk("read error\n");
88 /* it seems that 0xFE indicates that a button is still hold
89 down, while 0xff indicates that no button is hold
90 down. 0xfe sequences are sometimes interrupted by 0xFF */
92 dprintk("key %02x\n", b);
107 static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
109 unsigned char buf[2];
113 if (2 != i2c_master_recv(&ir->c,buf,2))
116 /* Does eliminate repeated parity code */
120 /* avoid fast reapeating */
125 /* Rearranges bits to the right order */
126 code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
127 ((buf[0]&0x02)<<3) | /* 0001 0000 */
128 ((buf[0]&0x04)<<1) | /* 0000 1000 */
129 ((buf[0]&0x08)>>1) | /* 0000 0100 */
130 ((buf[0]&0x10)>>3) | /* 0000 0010 */
131 ((buf[0]&0x20)>>5); /* 0000 0001 */
133 dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
141 /* ----------------------------------------------------------------------- */
142 void em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir)
147 /* detect & configure */
148 switch (dev->model) {
149 case (EM2800_BOARD_UNKNOWN):
151 case (EM2820_BOARD_UNKNOWN):
153 case (EM2800_BOARD_TERRATEC_CINERGY_200):
154 case (EM2820_BOARD_TERRATEC_CINERGY_250):
155 ir->ir_codes = ir_codes_em_terratec;
156 ir->get_key = get_key_terratec;
157 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2820 Terratec)");
159 case (EM2820_BOARD_PINNACLE_USB_2):
161 case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
162 ir->ir_codes = ir_codes_hauppauge_new;
163 ir->get_key = get_key_em_haup;
164 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
166 case (EM2820_BOARD_MSI_VOX_USB_2):
168 case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
170 case (EM2800_BOARD_KWORLD_USB2800):
175 /* ----------------------------------------------------------------------