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); 193