firedtv-rc.c

  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(keytable, 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(keytable[i], 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(idev->keycode);
157fail:
158	input_free_device(idev);
159	return err;
160}
161
162void fdtv_unregister_rc(struct firedtv *fdtv)
163{
164	cancel_work_sync(&fdtv->remote_ctrl_work);
165	kfree(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(idev, code, 1);
190	input_sync(idev);
191	input_report_key(idev, code, 0);
192	input_sync(idev);
193}