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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195// SPDX-License-Identifier: GPL-2.0-only/* * SEGA Dreamcast controller driver * Based on drivers/usb/iforce.c * * Copyright Yaegashi Takeshi, 2001 * Adrian McMenamin, 2008 - 2009 */
#include <linux/kernel.h>#include <linux/slab.h>#include <linux/input.h>#include <linux/module.h>#include <linux/init.h>#include <linux/timer.h>#include <linux/maple.h>
MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>");MODULE_DESCRIPTION("SEGA Dreamcast controller driver");MODULE_LICENSE("GPL");
struct dc_pad { struct input_dev *dev; struct maple_device *mdev;};
static void dc_pad_callback(struct mapleq *mq){ unsigned short buttons; struct maple_device *mapledev = mq->dev; struct dc_pad *pad = maple_get_drvdata(mapledev); struct input_dev *dev = pad->dev; unsigned char *res = mq->recvbuf->buf;
buttons = ~le16_to_cpup((__le16 *)(res + 8));
input_report_abs(dev, ABS_HAT0Y, (buttons & 0x0010 ? -1 : 0) + (buttons & 0x0020 ? 1 : 0)); input_report_abs(dev, ABS_HAT0X, (buttons & 0x0040 ? -1 : 0) + (buttons & 0x0080 ? 1 : 0)); input_report_abs(dev, ABS_HAT1Y, (buttons & 0x1000 ? -1 : 0) + (buttons & 0x2000 ? 1 : 0)); input_report_abs(dev, ABS_HAT1X, (buttons & 0x4000 ? -1 : 0) + (buttons & 0x8000 ? 1 : 0));
input_report_key(dev, BTN_C, buttons & 0x0001); input_report_key(dev, BTN_B, buttons & 0x0002); input_report_key(dev, BTN_A, buttons & 0x0004); input_report_key(dev, BTN_START, buttons & 0x0008); input_report_key(dev, BTN_Z, buttons & 0x0100); input_report_key(dev, BTN_Y, buttons & 0x0200); input_report_key(dev, BTN_X, buttons & 0x0400); input_report_key(dev, BTN_SELECT, buttons & 0x0800);
input_report_abs(dev, ABS_GAS, res[10]); input_report_abs(dev, ABS_BRAKE, res[11]); input_report_abs(dev, ABS_X, res[12]); input_report_abs(dev, ABS_Y, res[13]); input_report_abs(dev, ABS_RX, res[14]); input_report_abs(dev, ABS_RY, res[15]);}
static int dc_pad_open(struct input_dev *dev){ struct dc_pad *pad = dev_get_platdata(&dev->dev);
maple_getcond_callback(pad->mdev, dc_pad_callback, HZ/20, MAPLE_FUNC_CONTROLLER);
return 0;}
static void dc_pad_close(struct input_dev *dev){ struct dc_pad *pad = dev_get_platdata(&dev->dev);
maple_getcond_callback(pad->mdev, dc_pad_callback, 0, MAPLE_FUNC_CONTROLLER);}
/* allow the controller to be used */static int probe_maple_controller(struct device *dev){ static const short btn_bit[32] = { BTN_C, BTN_B, BTN_A, BTN_START, -1, -1, -1, -1, BTN_Z, BTN_Y, BTN_X, BTN_SELECT, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, };
static const short abs_bit[32] = { -1, -1, -1, -1, ABS_HAT0Y, ABS_HAT0Y, ABS_HAT0X, ABS_HAT0X, -1, -1, -1, -1, ABS_HAT1Y, ABS_HAT1Y, ABS_HAT1X, ABS_HAT1X, ABS_GAS, ABS_BRAKE, ABS_X, ABS_Y, ABS_RX, ABS_RY, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, };
struct maple_device *mdev = to_maple_dev(dev); struct maple_driver *mdrv = to_maple_driver(dev->driver); int i, error; struct dc_pad *pad; struct input_dev *idev; unsigned long data = be32_to_cpu(mdev->devinfo.function_data[0]);
pad = kzalloc_obj(*pad); idev = input_allocate_device(); if (!pad || !idev) { error = -ENOMEM; goto fail; }
pad->dev = idev; pad->mdev = mdev;
maple_set_drvdata(mdev, pad);
idev->open = dc_pad_open; idev->close = dc_pad_close;
for (i = 0; i < 32; i++) { if (data & (1 << i)) { if (btn_bit[i] >= 0) __set_bit(btn_bit[i], idev->keybit); else if (abs_bit[i] >= 0) __set_bit(abs_bit[i], idev->absbit); } }
if (idev->keybit[BIT_WORD(BTN_JOYSTICK)]) idev->evbit[0] |= BIT_MASK(EV_KEY);
if (idev->absbit[0]) idev->evbit[0] |= BIT_MASK(EV_ABS);
for (i = ABS_X; i <= ABS_BRAKE; i++) input_set_abs_params(idev, i, 0, 255, 0, 0);
for (i = ABS_HAT0X; i <= ABS_HAT3Y; i++) input_set_abs_params(idev, i, 1, -1, 0, 0);
idev->dev.platform_data = pad; idev->dev.parent = &mdev->dev; idev->name = mdev->product_name; idev->id.bustype = BUS_HOST;
error = input_register_device(idev); if (error) goto fail;
mdev->driver = mdrv;
return 0;
fail: input_free_device(idev); kfree(pad); maple_set_drvdata(mdev, NULL); return error;}
static int remove_maple_controller(struct device *dev){ struct maple_device *mdev = to_maple_dev(dev); struct dc_pad *pad = maple_get_drvdata(mdev);
mdev->callback = NULL; input_unregister_device(pad->dev); maple_set_drvdata(mdev, NULL); kfree(pad);
return 0;}
static struct maple_driver dc_pad_driver = { .function = MAPLE_FUNC_CONTROLLER, .drv = { .name = "Dreamcast_controller", .probe = probe_maple_controller, .remove = remove_maple_controller, },};
static int __init dc_pad_init(void){ return maple_driver_register(&dc_pad_driver);}
static void __exit dc_pad_exit(void){ maple_driver_unregister(&dc_pad_driver);}
module_init(dc_pad_init);module_exit(dc_pad_exit);