drivers/input/joystick/maplecontrol.c

   1 /*
   2  *      SEGA Dreamcast controller driver
   3  *      Based on drivers/usb/iforce.c
   4  *
   5  *      Copyright Yaegashi Takeshi, 2001
   6  *      Adrian McMenamin, 2008 - 2009
   7  */
   8
   9 #include <linux/kernel.h>
  10 #include <linux/slab.h>
  11 #include <linux/input.h>
  12 #include <linux/module.h>
  13 #include <linux/init.h>
  14 #include <linux/timer.h>
  15 #include <linux/maple.h>
  16
  17 MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");
  18 MODULE_DESCRIPTION("SEGA Dreamcast controller driver");
  19 MODULE_LICENSE("GPL");
  20
  21 struct dc_pad {
  22         struct input_dev *dev;
  23         struct maple_device *mdev;
  24 };
  25
  26 static void dc_pad_callback(struct mapleq *mq)
  27 {
  28         unsigned short buttons;
  29         struct maple_device *mapledev = mq->dev;
  30         struct dc_pad *pad = maple_get_drvdata(mapledev);
  31         struct input_dev *dev = pad->dev;
  32         unsigned char *res = mq->recvbuf->buf;
  33
  34         buttons = ~le16_to_cpup((__le16 *)(res + 8));
  35
  36         input_report_abs(dev, ABS_HAT0Y,
  37                 (buttons & 0x0010 ? -1 : 0) + (buttons & 0x0020 ? 1 : 0));
  38         input_report_abs(dev, ABS_HAT0X,
  39                 (buttons & 0x0040 ? -1 : 0) + (buttons & 0x0080 ? 1 : 0));
  40         input_report_abs(dev, ABS_HAT1Y,
  41                 (buttons & 0x1000 ? -1 : 0) + (buttons & 0x2000 ? 1 : 0));
  42         input_report_abs(dev, ABS_HAT1X,
  43                 (buttons & 0x4000 ? -1 : 0) + (buttons & 0x8000 ? 1 : 0));
  44
  45         input_report_key(dev, BTN_C,      buttons & 0x0001);
  46         input_report_key(dev, BTN_B,      buttons & 0x0002);
  47         input_report_key(dev, BTN_A,      buttons & 0x0004);
  48         input_report_key(dev, BTN_START,  buttons & 0x0008);
  49         input_report_key(dev, BTN_Z,      buttons & 0x0100);
  50         input_report_key(dev, BTN_Y,      buttons & 0x0200);
  51         input_report_key(dev, BTN_X,      buttons & 0x0400);
  52         input_report_key(dev, BTN_SELECT, buttons & 0x0800);
  53
  54         input_report_abs(dev, ABS_GAS,    res[10]);
  55         input_report_abs(dev, ABS_BRAKE,  res[11]);
  56         input_report_abs(dev, ABS_X,      res[12]);
  57         input_report_abs(dev, ABS_Y,      res[13]);
  58         input_report_abs(dev, ABS_RX,     res[14]);
  59         input_report_abs(dev, ABS_RY,     res[15]);
  60 }
  61
  62 static int dc_pad_open(struct input_dev *dev)
  63 {
  64         struct dc_pad *pad = dev_get_platdata(&dev->dev);
  65
  66         maple_getcond_callback(pad->mdev, dc_pad_callback, HZ/20,
  67                 MAPLE_FUNC_CONTROLLER);
  68
  69         return 0;
  70 }
  71
  72 static void dc_pad_close(struct input_dev *dev)
  73 {
  74         struct dc_pad *pad = dev_get_platdata(&dev->dev);
  75
  76         maple_getcond_callback(pad->mdev, dc_pad_callback, 0,
  77                 MAPLE_FUNC_CONTROLLER);
  78 }
  79
  80 /* allow the controller to be used */
  81 static int probe_maple_controller(struct device *dev)
  82 {
  83         static const short btn_bit[32] = {
  84                 BTN_C, BTN_B, BTN_A, BTN_START, -1, -1, -1, -1,
  85                 BTN_Z, BTN_Y, BTN_X, BTN_SELECT, -1, -1, -1, -1,
  86                 -1, -1, -1, -1, -1, -1, -1, -1,
  87                 -1, -1, -1, -1, -1, -1, -1, -1,
  88         };
  89
  90         static const short abs_bit[32] = {
  91                 -1, -1, -1, -1, ABS_HAT0Y, ABS_HAT0Y, ABS_HAT0X, ABS_HAT0X,
  92                 -1, -1, -1, -1, ABS_HAT1Y, ABS_HAT1Y, ABS_HAT1X, ABS_HAT1X,
  93                 ABS_GAS, ABS_BRAKE, ABS_X, ABS_Y, ABS_RX, ABS_RY, -1, -1,
  94                 -1, -1, -1, -1, -1, -1, -1, -1,
  95         };
  96
  97         struct maple_device *mdev = to_maple_dev(dev);
  98         struct maple_driver *mdrv = to_maple_driver(dev->driver);
  99         int i, error;
 100         struct dc_pad *pad;
 101         struct input_dev *idev;
 102         unsigned long data = be32_to_cpu(mdev->devinfo.function_data[0]);
 103
 104         pad = kzalloc(sizeof(struct dc_pad), GFP_KERNEL);
 105         idev = input_allocate_device();
 106         if (!pad || !idev) {
 107                 error = -ENOMEM;
 108                 goto fail;
 109         }
 110
 111         pad->dev = idev;
 112         pad->mdev = mdev;
 113
 114         idev->open = dc_pad_open;
 115         idev->close = dc_pad_close;
 116
 117         for (i = 0; i < 32; i++) {
 118                 if (data & (1 << i)) {
 119                         if (btn_bit[i] >= 0)
 120                                 __set_bit(btn_bit[i], idev->keybit);
 121                         else if (abs_bit[i] >= 0)
 122                                 __set_bit(abs_bit[i], idev->absbit);
 123                 }
 124         }
 125
 126         if (idev->keybit[BIT_WORD(BTN_JOYSTICK)])
 127                 idev->evbit[0] |= BIT_MASK(EV_KEY);
 128
 129         if (idev->absbit[0])
 130                 idev->evbit[0] |= BIT_MASK(EV_ABS);
 131
 132         for (i = ABS_X; i <= ABS_BRAKE; i++)
 133                 input_set_abs_params(idev, i, 0, 255, 0, 0);
 134
 135         for (i = ABS_HAT0X; i <= ABS_HAT3Y; i++)
 136                 input_set_abs_params(idev, i, 1, -1, 0, 0);
 137
 138         idev->dev.platform_data = pad;
 139         idev->dev.parent = &mdev->dev;
 140         idev->name = mdev->product_name;
 141         idev->id.bustype = BUS_HOST;
 142
 143         error = input_register_device(idev);
 144         if (error)
 145                 goto fail;
 146
 147         mdev->driver = mdrv;
 148         maple_set_drvdata(mdev, pad);
 149
 150         return 0;
 151
 152 fail:
 153         input_free_device(idev);
 154         kfree(pad);
 155         maple_set_drvdata(mdev, NULL);
 156         return error;
 157 }
 158
 159 static int remove_maple_controller(struct device *dev)
 160 {
 161         struct maple_device *mdev = to_maple_dev(dev);
 162         struct dc_pad *pad = maple_get_drvdata(mdev);
 163
 164         mdev->callback = NULL;
 165         input_unregister_device(pad->dev);
 166         maple_set_drvdata(mdev, NULL);
 167         kfree(pad);
 168
 169         return 0;
 170 }
 171
 172 static struct maple_driver dc_pad_driver = {
 173         .function =     MAPLE_FUNC_CONTROLLER,
 174         .drv = {
 175                 .name   = "Dreamcast_controller",
 176                 .probe  = probe_maple_controller,
 177                 .remove = remove_maple_controller,
 178         },
 179 };
 180
 181 static int __init dc_pad_init(void)
 182 {
 183         return maple_driver_register(&dc_pad_driver);
 184 }
 185
 186 static void __exit dc_pad_exit(void)
 187 {
 188         maple_driver_unregister(&dc_pad_driver);
 189 }
 190
 191 module_init(dc_pad_init);
 192 module_exit(dc_pad_exit);