1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * FireDTV driver (formerly known as FireSAT)
4 *
5 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
6 */
7
8#include <linux/bitops.h>
9#include <linux/input.h>
10#include <linux/kernel.h>
11#include <linux/slab.h>
12#include <linux/string.h>
13#include <linux/types.h>
14#include <linux/workqueue.h>
15
16#include "firedtv.h"
17
18/* fixed table with older keycodes, geared towards MythTV */
19static const u16 oldtable[] = {
20
21 /* code from device: 0x4501...0x451f */
22
23 KEY_ESC,
24 KEY_F9,
25 KEY_1,
26 KEY_2,
27 KEY_3,
28 KEY_4,
29 KEY_5,
30 KEY_6,
31 KEY_7,
32 KEY_8,
33 KEY_9,
34 KEY_I,
35 KEY_0,
36 KEY_ENTER,
37 KEY_RED,
38 KEY_UP,
39 KEY_GREEN,
40 KEY_F10,
41 KEY_SPACE,
42 KEY_F11,
43 KEY_YELLOW,
44 KEY_DOWN,
45 KEY_BLUE,
46 KEY_Z,
47 KEY_P,
48 KEY_PAGEDOWN,
49 KEY_LEFT,
50 KEY_W,
51 KEY_RIGHT,
52 KEY_P,
53 KEY_M,
54
55 /* code from device: 0x4540...0x4542 */
56
57 KEY_R,
58 KEY_V,
59 KEY_C,
60};
61
62/* user-modifiable table for a remote as sold in 2008 */
63static const u16 keytable[] = {
64
65 /* code from device: 0x0300...0x031f */
66
67 [0x00] = KEY_POWER,
68 [0x01] = KEY_SLEEP,
69 [0x02] = KEY_STOP,
70 [0x03] = KEY_OK,
71 [0x04] = KEY_RIGHT,
72 [0x05] = KEY_1,
73 [0x06] = KEY_2,
74 [0x07] = KEY_3,
75 [0x08] = KEY_LEFT,
76 [0x09] = KEY_4,
77 [0x0a] = KEY_5,
78 [0x0b] = KEY_6,
79 [0x0c] = KEY_UP,
80 [0x0d] = KEY_7,
81 [0x0e] = KEY_8,
82 [0x0f] = KEY_9,
83 [0x10] = KEY_DOWN,
84 [0x11] = KEY_TITLE, /* "OSD" - fixme */
85 [0x12] = KEY_0,
86 [0x13] = KEY_F20, /* "16:9" - fixme */
87 [0x14] = KEY_SCREEN, /* "FULL" - fixme */
88 [0x15] = KEY_MUTE,
89 [0x16] = KEY_SUBTITLE,
90 [0x17] = KEY_RECORD,
91 [0x18] = KEY_TEXT,
92 [0x19] = KEY_AUDIO,
93 [0x1a] = KEY_RED,
94 [0x1b] = KEY_PREVIOUS,
95 [0x1c] = KEY_REWIND,
96 [0x1d] = KEY_PLAYPAUSE,
97 [0x1e] = KEY_NEXT,
98 [0x1f] = KEY_VOLUMEUP,
99
100 /* code from device: 0x0340...0x0354 */
101
102 [0x20] = KEY_CHANNELUP,
103 [0x21] = KEY_F21, /* "4:3" - fixme */
104 [0x22] = KEY_TV,
105 [0x23] = KEY_DVD,
106 [0x24] = KEY_VCR,
107 [0x25] = KEY_AUX,
108 [0x26] = KEY_GREEN,
109 [0x27] = KEY_YELLOW,
110 [0x28] = KEY_BLUE,
111 [0x29] = KEY_CHANNEL, /* "CH.LIST" */
112 [0x2a] = KEY_VENDOR, /* "CI" - fixme */
113 [0x2b] = KEY_VOLUMEDOWN,
114 [0x2c] = KEY_CHANNELDOWN,
115 [0x2d] = KEY_LAST,
116 [0x2e] = KEY_INFO,
117 [0x2f] = KEY_FORWARD,
118 [0x30] = KEY_LIST,
119 [0x31] = KEY_FAVORITES,
120 [0x32] = KEY_MENU,
121 [0x33] = KEY_EPG,
122 [0x34] = KEY_EXIT,
123};
124
125int fdtv_register_rc(struct firedtv *fdtv, struct device *dev)
126{
127 struct input_dev *idev;
128 int i, err;
129
130 idev = input_allocate_device();
131 if (!idev)
132 return -ENOMEM;
133
134 fdtv->remote_ctrl_dev = idev;
135 idev->name = "FireDTV remote control";
136 idev->dev.parent = dev;
137 idev->evbit[0] = BIT_MASK(EV_KEY);
138 idev->keycode = kmemdup(p: keytable, size: sizeof(keytable), GFP_KERNEL);
139 if (!idev->keycode) {
140 err = -ENOMEM;
141 goto fail;
142 }
143 idev->keycodesize = sizeof(keytable[0]);
144 idev->keycodemax = ARRAY_SIZE(keytable);
145
146 for (i = 0; i < ARRAY_SIZE(keytable); i++)
147 set_bit(nr: keytable[i], addr: idev->keybit);
148
149 err = input_register_device(idev);
150 if (err)
151 goto fail_free_keymap;
152
153 return 0;
154
155fail_free_keymap:
156 kfree(objp: idev->keycode);
157fail:
158 input_free_device(dev: idev);
159 return err;
160}
161
162void fdtv_unregister_rc(struct firedtv *fdtv)
163{
164 cancel_work_sync(work: &fdtv->remote_ctrl_work);
165 kfree(objp: fdtv->remote_ctrl_dev->keycode);
166 input_unregister_device(fdtv->remote_ctrl_dev);
167}
168
169void fdtv_handle_rc(struct firedtv *fdtv, unsigned int code)
170{
171 struct input_dev *idev = fdtv->remote_ctrl_dev;
172 u16 *keycode = idev->keycode;
173
174 if (code >= 0x0300 && code <= 0x031f)
175 code = keycode[code - 0x0300];
176 else if (code >= 0x0340 && code <= 0x0354)
177 code = keycode[code - 0x0320];
178 else if (code >= 0x4501 && code <= 0x451f)
179 code = oldtable[code - 0x4501];
180 else if (code >= 0x4540 && code <= 0x4542)
181 code = oldtable[code - 0x4521];
182 else {
183 dev_dbg(fdtv->device,
184 "invalid key code 0x%04x from remote control\n",
185 code);
186 return;
187 }
188
189 input_report_key(dev: idev, code, value: 1);
190 input_sync(dev: idev);
191 input_report_key(dev: idev, code, value: 0);
192 input_sync(dev: idev);
193}
194

source code of linux/drivers/media/firewire/firedtv-rc.c