LXR linux/drivers/media/firewire/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}
 194