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d5e52653 MCC |
1 | /* |
2 | * | |
3 | * handle saa7134 IR remotes via linux kernel input layer. | |
4 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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 | |
18 | * | |
19 | */ | |
20 | ||
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> | |
29 | ||
30 | #include "em2820.h" | |
31 | ||
32 | static unsigned int disable_ir = 0; | |
33 | module_param(disable_ir, int, 0444); | |
34 | MODULE_PARM_DESC(disable_ir,"disable infrared remote support"); | |
35 | ||
36 | static unsigned int ir_debug = 0; | |
37 | module_param(ir_debug, int, 0644); | |
38 | MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]"); | |
39 | ||
40 | #define dprintk(fmt, arg...) if (ir_debug) \ | |
41 | printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg) | |
42 | ||
43 | /* ---------------------------------------------------------------------- */ | |
44 | ||
e43f14af | 45 | static IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE] = { |
4ac97914 MCC |
46 | [ 0x01 ] = KEY_CHANNEL, |
47 | [ 0x02 ] = KEY_SELECT, | |
48 | [ 0x03 ] = KEY_MUTE, | |
49 | [ 0x04 ] = KEY_POWER, | |
50 | [ 0x05 ] = KEY_KP1, | |
51 | [ 0x06 ] = KEY_KP2, | |
52 | [ 0x07 ] = KEY_KP3, | |
53 | [ 0x08 ] = KEY_CHANNELUP, | |
54 | [ 0x09 ] = KEY_KP4, | |
55 | [ 0x0a ] = KEY_KP5, | |
56 | [ 0x0b ] = KEY_KP6, | |
57 | [ 0x0c ] = KEY_CHANNELDOWN, | |
58 | [ 0x0d ] = KEY_KP7, | |
59 | [ 0x0e ] = KEY_KP8, | |
60 | [ 0x0f ] = KEY_KP9, | |
61 | [ 0x10 ] = KEY_VOLUMEUP, | |
62 | [ 0x11 ] = KEY_KP0, | |
63 | [ 0x12 ] = KEY_MENU, | |
64 | [ 0x13 ] = KEY_PRINT, | |
65 | [ 0x14 ] = KEY_VOLUMEDOWN, | |
66 | [ 0x16 ] = KEY_PAUSE, | |
67 | [ 0x18 ] = KEY_RECORD, | |
68 | [ 0x19 ] = KEY_REWIND, | |
69 | [ 0x1a ] = KEY_PLAY, | |
e43f14af MR |
70 | [ 0x1b ] = KEY_FORWARD, |
71 | [ 0x1c ] = KEY_BACKSPACE, | |
4ac97914 MCC |
72 | [ 0x1e ] = KEY_STOP, |
73 | [ 0x40 ] = KEY_ZOOM, | |
d5e52653 MCC |
74 | }; |
75 | ||
76 | /* ----------------------------------------------------------------------- */ | |
77 | ||
e43f14af MR |
78 | static int get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
79 | { | |
80 | unsigned char b; | |
81 | ||
82 | /* poll IR chip */ | |
83 | if (1 != i2c_master_recv(&ir->c,&b,1)) { | |
84 | dprintk("read error\n"); | |
85 | return -EIO; | |
86 | } | |
87 | ||
88 | /* it seems that 0xFE indicates that a button is still hold | |
4f9c05aa MCC |
89 | down, while 0xff indicates that no button is hold |
90 | down. 0xfe sequences are sometimes interrupted by 0xFF */ | |
e43f14af MR |
91 | |
92 | dprintk("key %02x\n", b); | |
93 | ||
4f9c05aa | 94 | if (b == 0xff) |
e43f14af MR |
95 | return 0; |
96 | ||
4f9c05aa | 97 | if (b == 0xfe) |
e43f14af MR |
98 | /* keep old data */ |
99 | return 1; | |
100 | ||
101 | *ir_key = b; | |
102 | *ir_raw = b; | |
103 | return 1; | |
104 | } | |
105 | ||
106 | ||
d5e52653 MCC |
107 | static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) |
108 | { | |
109 | unsigned char buf[2]; | |
110 | unsigned char code; | |
111 | ||
112 | /* poll IR chip */ | |
113 | if (2 != i2c_master_recv(&ir->c,buf,2)) | |
114 | return -EIO; | |
115 | ||
116 | /* Does eliminate repeated parity code */ | |
117 | if (buf[1]==0xff) | |
118 | return 0; | |
119 | ||
120 | /* avoid fast reapeating */ | |
121 | if (buf[1]==ir->old) | |
122 | return 0; | |
123 | ir->old=buf[1]; | |
124 | ||
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 */ | |
132 | ||
133 | dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]); | |
134 | ||
135 | /* return key */ | |
136 | *ir_key = code; | |
137 | *ir_raw = code; | |
138 | return 1; | |
139 | } | |
140 | ||
141 | /* ----------------------------------------------------------------------- */ | |
142 | void em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir) | |
143 | { | |
144 | if (disable_ir) | |
145 | return ; | |
146 | ||
147 | /* detect & configure */ | |
148 | switch (dev->model) { | |
149 | case (EM2800_BOARD_UNKNOWN): | |
150 | break; | |
151 | case (EM2820_BOARD_UNKNOWN): | |
152 | break; | |
16f2e622 | 153 | case (EM2800_BOARD_TERRATEC_CINERGY_200): |
d5e52653 | 154 | case (EM2820_BOARD_TERRATEC_CINERGY_250): |
e43f14af MR |
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)"); | |
d5e52653 MCC |
158 | break; |
159 | case (EM2820_BOARD_PINNACLE_USB_2): | |
d5e52653 MCC |
160 | break; |
161 | case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2): | |
162 | ir->ir_codes = ir_codes_hauppauge_new; | |
163 | ir->get_key = get_key_em_haup; | |
e43f14af | 164 | snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)"); |
d5e52653 MCC |
165 | break; |
166 | case (EM2820_BOARD_MSI_VOX_USB_2): | |
167 | break; | |
d5e52653 MCC |
168 | case (EM2800_BOARD_LEADTEK_WINFAST_USBII): |
169 | break; | |
170 | case (EM2800_BOARD_KWORLD_USB2800): | |
171 | break; | |
172 | } | |
173 | } | |
174 | ||
175 | /* ---------------------------------------------------------------------- | |
176 | * Local variables: | |
177 | * c-basic-offset: 8 | |
178 | * End: | |
179 | */ |