1c942fddfSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later
2786baecfSMauro Carvalho Chehab /* DVB USB compliant Linux driver for the Afatech 9005
3786baecfSMauro Carvalho Chehab * USB1.1 DVB-T receiver.
4786baecfSMauro Carvalho Chehab *
5786baecfSMauro Carvalho Chehab * Standard remote decode function
6786baecfSMauro Carvalho Chehab *
7786baecfSMauro Carvalho Chehab * Copyright (C) 2007 Luca Olivetti (luca@ventoso.org)
8786baecfSMauro Carvalho Chehab *
9786baecfSMauro Carvalho Chehab * Thanks to Afatech who kindly provided information.
10786baecfSMauro Carvalho Chehab *
11577a7ad3SMauro Carvalho Chehab * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
12786baecfSMauro Carvalho Chehab */
13786baecfSMauro Carvalho Chehab #include "af9005.h"
14786baecfSMauro Carvalho Chehab /* debug */
15786baecfSMauro Carvalho Chehab static int dvb_usb_af9005_remote_debug;
16786baecfSMauro Carvalho Chehab module_param_named(debug, dvb_usb_af9005_remote_debug, int, 0644);
17786baecfSMauro Carvalho Chehab MODULE_PARM_DESC(debug,
18786baecfSMauro Carvalho Chehab "enable (1) or disable (0) debug messages."
19786baecfSMauro Carvalho Chehab DVB_USB_DEBUG_STATUS);
20786baecfSMauro Carvalho Chehab
21786baecfSMauro Carvalho Chehab #define deb_decode(args...) dprintk(dvb_usb_af9005_remote_debug,0x01,args)
22786baecfSMauro Carvalho Chehab
23786baecfSMauro Carvalho Chehab struct rc_map_table rc_map_af9005_table[] = {
24786baecfSMauro Carvalho Chehab
25786baecfSMauro Carvalho Chehab {0x01b7, KEY_POWER},
26786baecfSMauro Carvalho Chehab {0x01a7, KEY_VOLUMEUP},
27786baecfSMauro Carvalho Chehab {0x0187, KEY_CHANNELUP},
28786baecfSMauro Carvalho Chehab {0x017f, KEY_MUTE},
29786baecfSMauro Carvalho Chehab {0x01bf, KEY_VOLUMEDOWN},
30786baecfSMauro Carvalho Chehab {0x013f, KEY_CHANNELDOWN},
31786baecfSMauro Carvalho Chehab {0x01df, KEY_1},
32786baecfSMauro Carvalho Chehab {0x015f, KEY_2},
33786baecfSMauro Carvalho Chehab {0x019f, KEY_3},
34786baecfSMauro Carvalho Chehab {0x011f, KEY_4},
35786baecfSMauro Carvalho Chehab {0x01ef, KEY_5},
36786baecfSMauro Carvalho Chehab {0x016f, KEY_6},
37786baecfSMauro Carvalho Chehab {0x01af, KEY_7},
38786baecfSMauro Carvalho Chehab {0x0127, KEY_8},
39786baecfSMauro Carvalho Chehab {0x0107, KEY_9},
40786baecfSMauro Carvalho Chehab {0x01cf, KEY_ZOOM},
41786baecfSMauro Carvalho Chehab {0x014f, KEY_0},
42786baecfSMauro Carvalho Chehab {0x018f, KEY_GOTO}, /* marked jump on the remote */
43786baecfSMauro Carvalho Chehab
44786baecfSMauro Carvalho Chehab {0x00bd, KEY_POWER},
45786baecfSMauro Carvalho Chehab {0x007d, KEY_VOLUMEUP},
46786baecfSMauro Carvalho Chehab {0x00fd, KEY_CHANNELUP},
47786baecfSMauro Carvalho Chehab {0x009d, KEY_MUTE},
48786baecfSMauro Carvalho Chehab {0x005d, KEY_VOLUMEDOWN},
49786baecfSMauro Carvalho Chehab {0x00dd, KEY_CHANNELDOWN},
50786baecfSMauro Carvalho Chehab {0x00ad, KEY_1},
51786baecfSMauro Carvalho Chehab {0x006d, KEY_2},
52786baecfSMauro Carvalho Chehab {0x00ed, KEY_3},
53786baecfSMauro Carvalho Chehab {0x008d, KEY_4},
54786baecfSMauro Carvalho Chehab {0x004d, KEY_5},
55786baecfSMauro Carvalho Chehab {0x00cd, KEY_6},
56786baecfSMauro Carvalho Chehab {0x00b5, KEY_7},
57786baecfSMauro Carvalho Chehab {0x0075, KEY_8},
58786baecfSMauro Carvalho Chehab {0x00f5, KEY_9},
59786baecfSMauro Carvalho Chehab {0x0095, KEY_ZOOM},
60786baecfSMauro Carvalho Chehab {0x0055, KEY_0},
61786baecfSMauro Carvalho Chehab {0x00d5, KEY_GOTO}, /* marked jump on the remote */
62786baecfSMauro Carvalho Chehab };
63786baecfSMauro Carvalho Chehab
64786baecfSMauro Carvalho Chehab int rc_map_af9005_table_size = ARRAY_SIZE(rc_map_af9005_table);
65786baecfSMauro Carvalho Chehab
66786baecfSMauro Carvalho Chehab static int repeatable_keys[] = {
67786baecfSMauro Carvalho Chehab KEY_VOLUMEUP,
68786baecfSMauro Carvalho Chehab KEY_VOLUMEDOWN,
69786baecfSMauro Carvalho Chehab KEY_CHANNELUP,
70786baecfSMauro Carvalho Chehab KEY_CHANNELDOWN
71786baecfSMauro Carvalho Chehab };
72786baecfSMauro Carvalho Chehab
af9005_rc_decode(struct dvb_usb_device * d,u8 * data,int len,u32 * event,int * state)73786baecfSMauro Carvalho Chehab int af9005_rc_decode(struct dvb_usb_device *d, u8 * data, int len, u32 * event,
74786baecfSMauro Carvalho Chehab int *state)
75786baecfSMauro Carvalho Chehab {
76786baecfSMauro Carvalho Chehab u16 mark, space;
77786baecfSMauro Carvalho Chehab u32 result;
78786baecfSMauro Carvalho Chehab u8 cust, dat, invdat;
79786baecfSMauro Carvalho Chehab int i;
80786baecfSMauro Carvalho Chehab
81786baecfSMauro Carvalho Chehab if (len >= 6) {
82786baecfSMauro Carvalho Chehab mark = (u16) (data[0] << 8) + data[1];
83786baecfSMauro Carvalho Chehab space = (u16) (data[2] << 8) + data[3];
84786baecfSMauro Carvalho Chehab if (space * 3 < mark) {
85786baecfSMauro Carvalho Chehab for (i = 0; i < ARRAY_SIZE(repeatable_keys); i++) {
86786baecfSMauro Carvalho Chehab if (d->last_event == repeatable_keys[i]) {
87786baecfSMauro Carvalho Chehab *state = REMOTE_KEY_REPEAT;
88786baecfSMauro Carvalho Chehab *event = d->last_event;
89786baecfSMauro Carvalho Chehab deb_decode("repeat key, event %x\n",
90786baecfSMauro Carvalho Chehab *event);
91786baecfSMauro Carvalho Chehab return 0;
92786baecfSMauro Carvalho Chehab }
93786baecfSMauro Carvalho Chehab }
94786baecfSMauro Carvalho Chehab deb_decode("repeated key ignored (non repeatable)\n");
95786baecfSMauro Carvalho Chehab return 0;
96786baecfSMauro Carvalho Chehab } else if (len >= 33 * 4) { /*32 bits + start code */
97786baecfSMauro Carvalho Chehab result = 0;
98786baecfSMauro Carvalho Chehab for (i = 4; i < 4 + 32 * 4; i += 4) {
99786baecfSMauro Carvalho Chehab result <<= 1;
100786baecfSMauro Carvalho Chehab mark = (u16) (data[i] << 8) + data[i + 1];
101786baecfSMauro Carvalho Chehab mark >>= 1;
102786baecfSMauro Carvalho Chehab space = (u16) (data[i + 2] << 8) + data[i + 3];
103786baecfSMauro Carvalho Chehab space >>= 1;
104786baecfSMauro Carvalho Chehab if (mark * 2 > space)
105786baecfSMauro Carvalho Chehab result += 1;
106786baecfSMauro Carvalho Chehab }
107786baecfSMauro Carvalho Chehab deb_decode("key pressed, raw value %x\n", result);
108786baecfSMauro Carvalho Chehab if ((result & 0xff000000) != 0xfe000000) {
109786baecfSMauro Carvalho Chehab deb_decode
110786baecfSMauro Carvalho Chehab ("doesn't start with 0xfe, ignored\n");
111786baecfSMauro Carvalho Chehab return 0;
112786baecfSMauro Carvalho Chehab }
113786baecfSMauro Carvalho Chehab cust = (result >> 16) & 0xff;
114786baecfSMauro Carvalho Chehab dat = (result >> 8) & 0xff;
115786baecfSMauro Carvalho Chehab invdat = (~result) & 0xff;
116786baecfSMauro Carvalho Chehab if (dat != invdat) {
117786baecfSMauro Carvalho Chehab deb_decode("code != inverted code\n");
118786baecfSMauro Carvalho Chehab return 0;
119786baecfSMauro Carvalho Chehab }
120786baecfSMauro Carvalho Chehab for (i = 0; i < rc_map_af9005_table_size; i++) {
121786baecfSMauro Carvalho Chehab if (rc5_custom(&rc_map_af9005_table[i]) == cust
122786baecfSMauro Carvalho Chehab && rc5_data(&rc_map_af9005_table[i]) == dat) {
123786baecfSMauro Carvalho Chehab *event = rc_map_af9005_table[i].keycode;
124786baecfSMauro Carvalho Chehab *state = REMOTE_KEY_PRESSED;
125786baecfSMauro Carvalho Chehab deb_decode
126786baecfSMauro Carvalho Chehab ("key pressed, event %x\n", *event);
127786baecfSMauro Carvalho Chehab return 0;
128786baecfSMauro Carvalho Chehab }
129786baecfSMauro Carvalho Chehab }
130786baecfSMauro Carvalho Chehab deb_decode("not found in table\n");
131786baecfSMauro Carvalho Chehab }
132786baecfSMauro Carvalho Chehab }
133786baecfSMauro Carvalho Chehab return 0;
134786baecfSMauro Carvalho Chehab }
135786baecfSMauro Carvalho Chehab
136786baecfSMauro Carvalho Chehab EXPORT_SYMBOL(rc_map_af9005_table);
137786baecfSMauro Carvalho Chehab EXPORT_SYMBOL(rc_map_af9005_table_size);
138786baecfSMauro Carvalho Chehab EXPORT_SYMBOL(af9005_rc_decode);
139786baecfSMauro Carvalho Chehab
140786baecfSMauro Carvalho Chehab MODULE_AUTHOR("Luca Olivetti <luca@ventoso.org>");
141786baecfSMauro Carvalho Chehab MODULE_DESCRIPTION
142786baecfSMauro Carvalho Chehab ("Standard remote control decoder for Afatech 9005 DVB-T USB1.1 stick");
143786baecfSMauro Carvalho Chehab MODULE_VERSION("1.0");
144786baecfSMauro Carvalho Chehab MODULE_LICENSE("GPL");
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