LXR linux/drivers/media/firewire/firedtv-rc.c

   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                dev_dbg(fdtv->device,
 188                        "invalid key code 0x%04x from remote control\n",
 189                        code);
 190                return;
 191        }
 192
 193        input_report_key(idev, code, 1);
 194        input_sync(idev);
 195        input_report_key(idev, code, 0);
 196        input_sync(idev);
 197}
 198