1/*
2 * FireDTV driver (formerly known as FireSAT)
3 *
4 * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
5 *
6 *	This program is free software; you can redistribute it and/or
7 *	modify it under the terms of the GNU General Public License as
8 *	published by the Free Software Foundation; either version 2 of
9 *	the License, or (at your option) any later version.
10 */
11
12#include <linux/bitops.h>
13#include <linux/input.h>
14#include <linux/kernel.h>
15#include <linux/slab.h>
16#include <linux/string.h>
17#include <linux/types.h>
18#include <linux/workqueue.h>
19
20#include "firedtv.h"
21
22/* fixed table with older keycodes, geared towards MythTV */
23static const u16 oldtable[] = {
24
25	/* code from device: 0x4501...0x451f */
26
27	KEY_ESC,
28	KEY_F9,
29	KEY_1,
30	KEY_2,
31	KEY_3,
32	KEY_4,
33	KEY_5,
34	KEY_6,
35	KEY_7,
36	KEY_8,
37	KEY_9,
38	KEY_I,
39	KEY_0,
40	KEY_ENTER,
41	KEY_RED,
42	KEY_UP,
43	KEY_GREEN,
44	KEY_F10,
45	KEY_SPACE,
46	KEY_F11,
47	KEY_YELLOW,
48	KEY_DOWN,
49	KEY_BLUE,
50	KEY_Z,
51	KEY_P,
52	KEY_PAGEDOWN,
53	KEY_LEFT,
54	KEY_W,
55	KEY_RIGHT,
56	KEY_P,
57	KEY_M,
58
59	/* code from device: 0x4540...0x4542 */
60
61	KEY_R,
62	KEY_V,
63	KEY_C,
64};
65
66/* user-modifiable table for a remote as sold in 2008 */
67static const u16 keytable[] = {
68
69	/* code from device: 0x0300...0x031f */
70
71	[0x00] = KEY_POWER,
72	[0x01] = KEY_SLEEP,
73	[0x02] = KEY_STOP,
74	[0x03] = KEY_OK,
75	[0x04] = KEY_RIGHT,
76	[0x05] = KEY_1,
77	[0x06] = KEY_2,
78	[0x07] = KEY_3,
79	[0x08] = KEY_LEFT,
80	[0x09] = KEY_4,
81	[0x0a] = KEY_5,
82	[0x0b] = KEY_6,
83	[0x0c] = KEY_UP,
84	[0x0d] = KEY_7,
85	[0x0e] = KEY_8,
86	[0x0f] = KEY_9,
87	[0x10] = KEY_DOWN,
88	[0x11] = KEY_TITLE,	/* "OSD" - fixme */
89	[0x12] = KEY_0,
90	[0x13] = KEY_F20,	/* "16:9" - fixme */
91	[0x14] = KEY_SCREEN,	/* "FULL" - fixme */
92	[0x15] = KEY_MUTE,
93	[0x16] = KEY_SUBTITLE,
94	[0x17] = KEY_RECORD,
95	[0x18] = KEY_TEXT,
96	[0x19] = KEY_AUDIO,
97	[0x1a] = KEY_RED,
98	[0x1b] = KEY_PREVIOUS,
99	[0x1c] = KEY_REWIND,
100	[0x1d] = KEY_PLAYPAUSE,
101	[0x1e] = KEY_NEXT,
102	[0x1f] = KEY_VOLUMEUP,
103
104	/* code from device: 0x0340...0x0354 */
105
106	[0x20] = KEY_CHANNELUP,
107	[0x21] = KEY_F21,	/* "4:3" - fixme */
108	[0x22] = KEY_TV,
109	[0x23] = KEY_DVD,
110	[0x24] = KEY_VCR,
111	[0x25] = KEY_AUX,
112	[0x26] = KEY_GREEN,
113	[0x27] = KEY_YELLOW,
114	[0x28] = KEY_BLUE,
115	[0x29] = KEY_CHANNEL,	/* "CH.LIST" */
116	[0x2a] = KEY_VENDOR,	/* "CI" - fixme */
117	[0x2b] = KEY_VOLUMEDOWN,
118	[0x2c] = KEY_CHANNELDOWN,
119	[0x2d] = KEY_LAST,
120	[0x2e] = KEY_INFO,
121	[0x2f] = KEY_FORWARD,
122	[0x30] = KEY_LIST,
123	[0x31] = KEY_FAVORITES,
124	[0x32] = KEY_MENU,
125	[0x33] = KEY_EPG,
126	[0x34] = KEY_EXIT,
127};
128
129int fdtv_register_rc(struct firedtv *fdtv, struct device *dev)
130{
131	struct input_dev *idev;
132	int i, err;
133
134	idev = input_allocate_device();
135	if (!idev)
136		return -ENOMEM;
137
138	fdtv->remote_ctrl_dev = idev;
139	idev->name = "FireDTV remote control";
140	idev->dev.parent = dev;
141	idev->evbit[0] = BIT_MASK(EV_KEY);
142	idev->keycode = kmemdup(keytable, sizeof(keytable), GFP_KERNEL);
143	if (!idev->keycode) {
144		err = -ENOMEM;
145		goto fail;
146	}
147	idev->keycodesize = sizeof(keytable[0]);
148	idev->keycodemax = ARRAY_SIZE(keytable);
149
150	for (i = 0; i < ARRAY_SIZE(keytable); i++)
151		set_bit(keytable[i], idev->keybit);
152
153	err = input_register_device(idev);
154	if (err)
155		goto fail_free_keymap;
156
157	return 0;
158
159fail_free_keymap:
160	kfree(idev->keycode);
161fail:
162	input_free_device(idev);
163	return err;
164}
165
166void fdtv_unregister_rc(struct firedtv *fdtv)
167{
168	cancel_work_sync(&fdtv->remote_ctrl_work);
169	kfree(fdtv->remote_ctrl_dev->keycode);
170	input_unregister_device(fdtv->remote_ctrl_dev);
171}
172
173void fdtv_handle_rc(struct firedtv *fdtv, unsigned int code)
174{
175	struct input_dev *idev = fdtv->remote_ctrl_dev;
176	u16 *keycode = idev->keycode;
177
178	if (code >= 0x0300 && code <= 0x031f)
179		code = keycode[code - 0x0300];
180	else if (code >= 0x0340 && code <= 0x0354)
181		code = keycode[code - 0x0320];
182	else if (code >= 0x4501 && code <= 0x451f)
183		code = oldtable[code - 0x4501];
184	else if (code >= 0x4540 && code <= 0x4542)
185		code = oldtable[code - 0x4521];
186	else {
187		printk(KERN_DEBUG "firedtv: invalid key code 0x%04x "
188		       "from remote control\n", code);
189		return;
190	}
191
192	input_report_key(idev, code, 1);
193	input_sync(idev);
194	input_report_key(idev, code, 0);
195	input_sync(idev);
196}
197