V4L/DVB (6006): tuner: move last_div to tuner-simple private data
[wrt350n-kernel.git] / drivers / media / video / em28xx / em28xx-input.c
blob55d45b0032cff0cda5a84844aaceeff096547d0f
1 /*
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/moduleparam.h>
26 #include <linux/init.h>
27 #include <linux/delay.h>
28 #include <linux/interrupt.h>
29 #include <linux/input.h>
30 #include <linux/usb.h>
32 #include "em28xx.h"
34 static unsigned int disable_ir = 0;
35 module_param(disable_ir, int, 0444);
36 MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
38 static unsigned int ir_debug = 0;
39 module_param(ir_debug, int, 0644);
40 MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
42 #define dprintk(fmt, arg...) if (ir_debug) \
43 printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
45 /* ----------------------------------------------------------------------- */
47 static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
49 unsigned char b;
51 /* poll IR chip */
52 if (1 != i2c_master_recv(&ir->c,&b,1)) {
53 dprintk("read error\n");
54 return -EIO;
57 /* it seems that 0xFE indicates that a button is still hold
58 down, while 0xff indicates that no button is hold
59 down. 0xfe sequences are sometimes interrupted by 0xFF */
61 dprintk("key %02x\n", b);
63 if (b == 0xff)
64 return 0;
66 if (b == 0xfe)
67 /* keep old data */
68 return 1;
70 *ir_key = b;
71 *ir_raw = b;
72 return 1;
76 static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
78 unsigned char buf[2];
79 unsigned char code;
81 /* poll IR chip */
82 if (2 != i2c_master_recv(&ir->c,buf,2))
83 return -EIO;
85 /* Does eliminate repeated parity code */
86 if (buf[1]==0xff)
87 return 0;
89 ir->old=buf[1];
91 /* Rearranges bits to the right order */
92 code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
93 ((buf[0]&0x02)<<3) | /* 0001 0000 */
94 ((buf[0]&0x04)<<1) | /* 0000 1000 */
95 ((buf[0]&0x08)>>1) | /* 0000 0100 */
96 ((buf[0]&0x10)>>3) | /* 0000 0010 */
97 ((buf[0]&0x20)>>5); /* 0000 0001 */
99 dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
101 /* return key */
102 *ir_key = code;
103 *ir_raw = code;
104 return 1;
107 static int get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
109 unsigned char buf[3];
111 /* poll IR chip */
113 if (3 != i2c_master_recv(&ir->c,buf,3)) {
114 dprintk("read error\n");
115 return -EIO;
118 dprintk("key %02x\n", buf[2]&0x3f);
119 if (buf[0]!=0x00){
120 return 0;
123 *ir_key = buf[2]&0x3f;
124 *ir_raw = buf[2]&0x3f;
126 return 1;
129 /* ----------------------------------------------------------------------- */
130 void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir)
132 if (disable_ir) {
133 ir->get_key=NULL;
134 return ;
137 /* detect & configure */
138 switch (dev->model) {
139 case (EM2800_BOARD_UNKNOWN):
140 break;
141 case (EM2820_BOARD_UNKNOWN):
142 break;
143 case (EM2800_BOARD_TERRATEC_CINERGY_200):
144 case (EM2820_BOARD_TERRATEC_CINERGY_250):
145 ir->ir_codes = ir_codes_em_terratec;
146 ir->get_key = get_key_terratec;
147 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Terratec)");
148 break;
149 case (EM2820_BOARD_PINNACLE_USB_2):
150 ir->ir_codes = ir_codes_pinnacle_grey;
151 ir->get_key = get_key_pinnacle_usb_grey;
152 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Pinnacle PCTV)");
153 break;
154 case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
155 ir->ir_codes = ir_codes_hauppauge_new;
156 ir->get_key = get_key_em_haup;
157 snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
158 break;
159 case (EM2820_BOARD_MSI_VOX_USB_2):
160 break;
161 case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
162 break;
163 case (EM2800_BOARD_KWORLD_USB2800):
164 break;
168 /* ----------------------------------------------------------------------
169 * Local variables:
170 * c-basic-offset: 8
171 * End: