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 */
  23 static 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 */
  67 static 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
 129 int 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
 159 fail_free_keymap:
 160         kfree(idev->keycode);
 161 fail:
 162         input_free_device(idev);
 163         return err;
 164 }
 165
 166 void 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
 173 void 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 }