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707 lines
18 KiB
707 lines
18 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (c) 1996-2001 Vojtech Pavlik |
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*/ |
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|
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/* |
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* Analog joystick and gamepad driver for Linux |
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*/ |
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/* |
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*/ |
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#include <linux/delay.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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#include <linux/bitops.h> |
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#include <linux/init.h> |
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#include <linux/input.h> |
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#include <linux/gameport.h> |
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#include <linux/jiffies.h> |
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#include <linux/seq_buf.h> |
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#include <linux/timex.h> |
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#include <linux/timekeeping.h> |
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#define DRIVER_DESC "Analog joystick and gamepad driver" |
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MODULE_AUTHOR("Vojtech Pavlik <[email protected]>"); |
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MODULE_DESCRIPTION(DRIVER_DESC); |
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MODULE_LICENSE("GPL"); |
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/* |
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* Option parsing. |
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*/ |
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#define ANALOG_PORTS 16 |
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static char *js[ANALOG_PORTS]; |
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static unsigned int js_nargs; |
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static int analog_options[ANALOG_PORTS]; |
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module_param_array_named(map, js, charp, &js_nargs, 0); |
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MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities"); |
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/* |
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* Times, feature definitions. |
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*/ |
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#define ANALOG_RUDDER 0x00004 |
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#define ANALOG_THROTTLE 0x00008 |
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#define ANALOG_AXES_STD 0x0000f |
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#define ANALOG_BTNS_STD 0x000f0 |
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#define ANALOG_BTNS_CHF 0x00100 |
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#define ANALOG_HAT1_CHF 0x00200 |
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#define ANALOG_HAT2_CHF 0x00400 |
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#define ANALOG_HAT_FCS 0x00800 |
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#define ANALOG_HATS_ALL 0x00e00 |
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#define ANALOG_BTN_TL 0x01000 |
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#define ANALOG_BTN_TR 0x02000 |
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#define ANALOG_BTN_TL2 0x04000 |
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#define ANALOG_BTN_TR2 0x08000 |
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#define ANALOG_BTNS_TLR 0x03000 |
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#define ANALOG_BTNS_TLR2 0x0c000 |
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#define ANALOG_BTNS_GAMEPAD 0x0f000 |
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#define ANALOG_HBTN_CHF 0x10000 |
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#define ANALOG_ANY_CHF 0x10700 |
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#define ANALOG_SAITEK 0x20000 |
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#define ANALOG_EXTENSIONS 0x7ff00 |
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#define ANALOG_GAMEPAD 0x80000 |
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#define ANALOG_MAX_TIME 3 /* 3 ms */ |
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#define ANALOG_LOOP_TIME 2000 /* 2 * loop */ |
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#define ANALOG_SAITEK_DELAY 200 /* 200 us */ |
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#define ANALOG_SAITEK_TIME 2000 /* 2000 us */ |
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#define ANALOG_AXIS_TIME 2 /* 2 * refresh */ |
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#define ANALOG_INIT_RETRIES 8 /* 8 times */ |
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#define ANALOG_FUZZ_BITS 2 /* 2 bit more */ |
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#define ANALOG_FUZZ_MAGIC 36 /* 36 u*ms/loop */ |
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#define ANALOG_MAX_NAME_LENGTH 128 |
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#define ANALOG_MAX_PHYS_LENGTH 32 |
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static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE }; |
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static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y }; |
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static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR }; |
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static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS }; |
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static short analog_pad_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_TL2, BTN_TR2, BTN_SELECT, BTN_START, BTN_MODE, BTN_BASE }; |
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static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2, |
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BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 }; |
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static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 }; |
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struct analog { |
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struct input_dev *dev; |
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int mask; |
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short *buttons; |
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char name[ANALOG_MAX_NAME_LENGTH]; |
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char phys[ANALOG_MAX_PHYS_LENGTH]; |
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}; |
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struct analog_port { |
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struct gameport *gameport; |
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struct analog analog[2]; |
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unsigned char mask; |
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char saitek; |
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char cooked; |
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int bads; |
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int reads; |
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int loop; |
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int fuzz; |
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int axes[4]; |
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int buttons; |
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int initial[4]; |
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int axtime; |
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}; |
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/* |
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* analog_decode() decodes analog joystick data and reports input events. |
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*/ |
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static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) |
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{ |
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struct input_dev *dev = analog->dev; |
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int i, j; |
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if (analog->mask & ANALOG_HAT_FCS) |
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for (i = 0; i < 4; i++) |
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if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { |
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buttons |= 1 << (i + 14); |
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break; |
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} |
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for (i = j = 0; i < 6; i++) |
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if (analog->mask & (0x10 << i)) |
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input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); |
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if (analog->mask & ANALOG_HBTN_CHF) |
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for (i = 0; i < 4; i++) |
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input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); |
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if (analog->mask & ANALOG_BTN_TL) |
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input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); |
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if (analog->mask & ANALOG_BTN_TR) |
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input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); |
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if (analog->mask & ANALOG_BTN_TL2) |
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input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); |
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if (analog->mask & ANALOG_BTN_TR2) |
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input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); |
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for (i = j = 0; i < 4; i++) |
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if (analog->mask & (1 << i)) |
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input_report_abs(dev, analog_axes[j++], axes[i]); |
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for (i = j = 0; i < 3; i++) |
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if (analog->mask & analog_exts[i]) { |
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input_report_abs(dev, analog_hats[j++], |
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((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); |
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input_report_abs(dev, analog_hats[j++], |
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((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); |
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} |
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input_sync(dev); |
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} |
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/* |
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* analog_cooked_read() reads analog joystick data. |
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*/ |
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static int analog_cooked_read(struct analog_port *port) |
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{ |
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struct gameport *gameport = port->gameport; |
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ktime_t time[4], start, loop, now; |
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unsigned int loopout, timeout; |
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unsigned char data[4], this, last; |
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unsigned long flags; |
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int i, j; |
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loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; |
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timeout = ANALOG_MAX_TIME * NSEC_PER_MSEC; |
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local_irq_save(flags); |
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gameport_trigger(gameport); |
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now = ktime_get(); |
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local_irq_restore(flags); |
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start = now; |
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this = port->mask; |
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i = 0; |
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do { |
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loop = now; |
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last = this; |
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local_irq_disable(); |
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this = gameport_read(gameport) & port->mask; |
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now = ktime_get(); |
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local_irq_restore(flags); |
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if ((last ^ this) && (ktime_sub(now, loop) < loopout)) { |
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data[i] = last ^ this; |
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time[i] = now; |
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i++; |
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} |
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} while (this && (i < 4) && (ktime_sub(now, start) < timeout)); |
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this <<= 4; |
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for (--i; i >= 0; i--) { |
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this |= data[i]; |
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for (j = 0; j < 4; j++) |
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if (data[i] & (1 << j)) |
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port->axes[j] = ((u32)ktime_sub(time[i], start) << ANALOG_FUZZ_BITS) / port->loop; |
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} |
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return -(this != port->mask); |
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} |
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static int analog_button_read(struct analog_port *port, char saitek, char chf) |
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{ |
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unsigned char u; |
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int t = 1, i = 0; |
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int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); |
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u = gameport_read(port->gameport); |
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if (!chf) { |
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port->buttons = (~u >> 4) & 0xf; |
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return 0; |
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} |
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port->buttons = 0; |
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while ((~u & 0xf0) && (i < 16) && t) { |
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port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; |
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if (!saitek) return 0; |
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udelay(ANALOG_SAITEK_DELAY); |
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t = strobe; |
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gameport_trigger(port->gameport); |
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while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; |
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i++; |
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} |
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return -(!t || (i == 16)); |
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} |
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/* |
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* analog_poll() repeatedly polls the Analog joysticks. |
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*/ |
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static void analog_poll(struct gameport *gameport) |
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{ |
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struct analog_port *port = gameport_get_drvdata(gameport); |
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int i; |
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char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); |
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char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); |
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if (port->cooked) { |
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port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); |
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if (chf) |
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port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; |
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port->reads++; |
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} else { |
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if (!port->axtime--) { |
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port->bads -= analog_cooked_read(port); |
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port->bads -= analog_button_read(port, saitek, chf); |
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port->reads++; |
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port->axtime = ANALOG_AXIS_TIME - 1; |
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} else { |
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if (!saitek) |
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analog_button_read(port, saitek, chf); |
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} |
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} |
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for (i = 0; i < 2; i++) |
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if (port->analog[i].mask) |
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analog_decode(port->analog + i, port->axes, port->initial, port->buttons); |
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} |
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/* |
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* analog_open() is a callback from the input open routine. |
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*/ |
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static int analog_open(struct input_dev *dev) |
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{ |
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struct analog_port *port = input_get_drvdata(dev); |
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gameport_start_polling(port->gameport); |
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return 0; |
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} |
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/* |
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* analog_close() is a callback from the input close routine. |
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*/ |
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static void analog_close(struct input_dev *dev) |
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{ |
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struct analog_port *port = input_get_drvdata(dev); |
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gameport_stop_polling(port->gameport); |
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} |
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/* |
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* analog_calibrate_timer() calibrates the timer and computes loop |
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* and timeout values for a joystick port. |
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*/ |
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static void analog_calibrate_timer(struct analog_port *port) |
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{ |
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struct gameport *gameport = port->gameport; |
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unsigned int i, t, tx; |
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ktime_t t1, t2, t3; |
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unsigned long flags; |
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tx = ~0; |
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for (i = 0; i < 50; i++) { |
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local_irq_save(flags); |
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t1 = ktime_get(); |
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for (t = 0; t < 50; t++) { |
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gameport_read(gameport); |
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t2 = ktime_get(); |
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} |
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t3 = ktime_get(); |
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local_irq_restore(flags); |
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udelay(i); |
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t = ktime_sub(t2, t1) - ktime_sub(t3, t2); |
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if (t < tx) tx = t; |
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} |
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port->loop = tx / 50; |
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} |
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/* |
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* analog_name() constructs a name for an analog joystick. |
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*/ |
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static void analog_name(struct analog *analog) |
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{ |
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struct seq_buf s; |
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seq_buf_init(&s, analog->name, sizeof(analog->name)); |
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seq_buf_printf(&s, "Analog %d-axis %d-button", |
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hweight8(analog->mask & ANALOG_AXES_STD), |
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hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + |
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hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); |
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if (analog->mask & ANALOG_HATS_ALL) |
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seq_buf_printf(&s, " %d-hat", |
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hweight16(analog->mask & ANALOG_HATS_ALL)); |
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if (analog->mask & ANALOG_HAT_FCS) |
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seq_buf_printf(&s, " FCS"); |
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if (analog->mask & ANALOG_ANY_CHF) |
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seq_buf_printf(&s, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF"); |
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seq_buf_printf(&s, (analog->mask & ANALOG_GAMEPAD) ? " gamepad" : " joystick"); |
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} |
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/* |
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* analog_init_device() |
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*/ |
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static int analog_init_device(struct analog_port *port, struct analog *analog, int index) |
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{ |
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struct input_dev *input_dev; |
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int i, j, t, v, w, x, y, z; |
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int error; |
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analog_name(analog); |
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snprintf(analog->phys, sizeof(analog->phys), |
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"%s/input%d", port->gameport->phys, index); |
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analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; |
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analog->dev = input_dev = input_allocate_device(); |
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if (!input_dev) |
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return -ENOMEM; |
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input_dev->name = analog->name; |
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input_dev->phys = analog->phys; |
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input_dev->id.bustype = BUS_GAMEPORT; |
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input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; |
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input_dev->id.product = analog->mask >> 4; |
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input_dev->id.version = 0x0100; |
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input_dev->dev.parent = &port->gameport->dev; |
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input_set_drvdata(input_dev, port); |
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input_dev->open = analog_open; |
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input_dev->close = analog_close; |
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); |
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for (i = j = 0; i < 4; i++) |
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if (analog->mask & (1 << i)) { |
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t = analog_axes[j]; |
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x = port->axes[i]; |
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y = (port->axes[0] + port->axes[1]) >> 1; |
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z = y - port->axes[i]; |
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z = z > 0 ? z : -z; |
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v = (x >> 3); |
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w = (x >> 3); |
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if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) |
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x = y; |
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if (analog->mask & ANALOG_SAITEK) { |
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if (i == 2) x = port->axes[i]; |
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v = x - (x >> 2); |
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w = (x >> 4); |
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} |
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input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); |
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j++; |
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} |
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for (i = j = 0; i < 3; i++) |
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if (analog->mask & analog_exts[i]) |
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for (x = 0; x < 2; x++) { |
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t = analog_hats[j++]; |
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input_set_abs_params(input_dev, t, -1, 1, 0, 0); |
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} |
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for (i = j = 0; i < 4; i++) |
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if (analog->mask & (0x10 << i)) |
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set_bit(analog->buttons[j++], input_dev->keybit); |
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if (analog->mask & ANALOG_BTNS_CHF) |
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for (i = 0; i < 2; i++) |
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set_bit(analog->buttons[j++], input_dev->keybit); |
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if (analog->mask & ANALOG_HBTN_CHF) |
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for (i = 0; i < 4; i++) |
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set_bit(analog->buttons[j++], input_dev->keybit); |
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for (i = 0; i < 4; i++) |
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if (analog->mask & (ANALOG_BTN_TL << i)) |
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set_bit(analog_pads[i], input_dev->keybit); |
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analog_decode(analog, port->axes, port->initial, port->buttons); |
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error = input_register_device(analog->dev); |
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if (error) { |
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input_free_device(analog->dev); |
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return error; |
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} |
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return 0; |
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} |
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/* |
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* analog_init_devices() sets up device-specific values and registers the input devices. |
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*/ |
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static int analog_init_masks(struct analog_port *port) |
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{ |
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int i; |
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struct analog *analog = port->analog; |
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int max[4]; |
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if (!port->mask) |
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return -1; |
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if ((port->mask & 3) != 3 && port->mask != 0xc) { |
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printk(KERN_WARNING "analog.c: Unknown joystick device found " |
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"(data=%#x, %s), probably not analog joystick.\n", |
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port->mask, port->gameport->phys); |
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return -1; |
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} |
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i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ |
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analog[0].mask = i & 0xfffff; |
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analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) |
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| port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) |
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| ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); |
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analog[0].mask &= ~(ANALOG_HAT2_CHF) |
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| ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); |
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analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) |
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| ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) |
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| ((~analog[0].mask & ANALOG_HAT_FCS) << 2) |
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| ((~analog[0].mask & ANALOG_HAT_FCS) << 4); |
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analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) |
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| (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) |
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& ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); |
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analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); |
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analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD |
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: (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); |
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if (port->cooked) { |
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for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; |
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if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; |
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if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; |
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if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; |
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if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; |
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if ((analog[0].mask & ANALOG_HAT_FCS)) max[3] >>= 1; |
|
|
|
gameport_calibrate(port->gameport, port->axes, max); |
|
} |
|
|
|
for (i = 0; i < 4; i++) |
|
port->initial[i] = port->axes[i]; |
|
|
|
return -!(analog[0].mask || analog[1].mask); |
|
} |
|
|
|
static int analog_init_port(struct gameport *gameport, struct gameport_driver *drv, struct analog_port *port) |
|
{ |
|
int i, t, u, v; |
|
|
|
port->gameport = gameport; |
|
|
|
gameport_set_drvdata(gameport, port); |
|
|
|
if (!gameport_open(gameport, drv, GAMEPORT_MODE_RAW)) { |
|
|
|
analog_calibrate_timer(port); |
|
|
|
gameport_trigger(gameport); |
|
t = gameport_read(gameport); |
|
msleep(ANALOG_MAX_TIME); |
|
port->mask = (gameport_read(gameport) ^ t) & t & 0xf; |
|
port->fuzz = (NSEC_PER_MSEC * ANALOG_FUZZ_MAGIC) / port->loop / 1000 + ANALOG_FUZZ_BITS; |
|
|
|
for (i = 0; i < ANALOG_INIT_RETRIES; i++) { |
|
if (!analog_cooked_read(port)) |
|
break; |
|
msleep(ANALOG_MAX_TIME); |
|
} |
|
|
|
u = v = 0; |
|
|
|
msleep(ANALOG_MAX_TIME); |
|
t = gameport_time(gameport, ANALOG_MAX_TIME * 1000); |
|
gameport_trigger(gameport); |
|
while ((gameport_read(port->gameport) & port->mask) && (u < t)) |
|
u++; |
|
udelay(ANALOG_SAITEK_DELAY); |
|
t = gameport_time(gameport, ANALOG_SAITEK_TIME); |
|
gameport_trigger(gameport); |
|
while ((gameport_read(port->gameport) & port->mask) && (v < t)) |
|
v++; |
|
|
|
if (v < (u >> 1)) { /* FIXME - more than one port */ |
|
analog_options[0] |= /* FIXME - more than one port */ |
|
ANALOG_SAITEK | ANALOG_BTNS_CHF | ANALOG_HBTN_CHF | ANALOG_HAT1_CHF; |
|
return 0; |
|
} |
|
|
|
gameport_close(gameport); |
|
} |
|
|
|
if (!gameport_open(gameport, drv, GAMEPORT_MODE_COOKED)) { |
|
|
|
for (i = 0; i < ANALOG_INIT_RETRIES; i++) |
|
if (!gameport_cooked_read(gameport, port->axes, &port->buttons)) |
|
break; |
|
for (i = 0; i < 4; i++) |
|
if (port->axes[i] != -1) |
|
port->mask |= 1 << i; |
|
|
|
port->fuzz = gameport->fuzz; |
|
port->cooked = 1; |
|
return 0; |
|
} |
|
|
|
return gameport_open(gameport, drv, GAMEPORT_MODE_RAW); |
|
} |
|
|
|
static int analog_connect(struct gameport *gameport, struct gameport_driver *drv) |
|
{ |
|
struct analog_port *port; |
|
int i; |
|
int err; |
|
|
|
if (!(port = kzalloc(sizeof(struct analog_port), GFP_KERNEL))) |
|
return -ENOMEM; |
|
|
|
err = analog_init_port(gameport, drv, port); |
|
if (err) |
|
goto fail1; |
|
|
|
err = analog_init_masks(port); |
|
if (err) |
|
goto fail2; |
|
|
|
gameport_set_poll_handler(gameport, analog_poll); |
|
gameport_set_poll_interval(gameport, 10); |
|
|
|
for (i = 0; i < 2; i++) |
|
if (port->analog[i].mask) { |
|
err = analog_init_device(port, port->analog + i, i); |
|
if (err) |
|
goto fail3; |
|
} |
|
|
|
return 0; |
|
|
|
fail3: while (--i >= 0) |
|
if (port->analog[i].mask) |
|
input_unregister_device(port->analog[i].dev); |
|
fail2: gameport_close(gameport); |
|
fail1: gameport_set_drvdata(gameport, NULL); |
|
kfree(port); |
|
return err; |
|
} |
|
|
|
static void analog_disconnect(struct gameport *gameport) |
|
{ |
|
struct analog_port *port = gameport_get_drvdata(gameport); |
|
int i; |
|
|
|
for (i = 0; i < 2; i++) |
|
if (port->analog[i].mask) |
|
input_unregister_device(port->analog[i].dev); |
|
gameport_close(gameport); |
|
gameport_set_drvdata(gameport, NULL); |
|
printk(KERN_INFO "analog.c: %d out of %d reads (%d%%) on %s failed\n", |
|
port->bads, port->reads, port->reads ? (port->bads * 100 / port->reads) : 0, |
|
port->gameport->phys); |
|
kfree(port); |
|
} |
|
|
|
struct analog_types { |
|
char *name; |
|
int value; |
|
}; |
|
|
|
static struct analog_types analog_types[] = { |
|
{ "none", 0x00000000 }, |
|
{ "auto", 0x000000ff }, |
|
{ "2btn", 0x0000003f }, |
|
{ "y-joy", 0x0cc00033 }, |
|
{ "y-pad", 0x8cc80033 }, |
|
{ "fcs", 0x000008f7 }, |
|
{ "chf", 0x000002ff }, |
|
{ "fullchf", 0x000007ff }, |
|
{ "gamepad", 0x000830f3 }, |
|
{ "gamepad8", 0x0008f0f3 }, |
|
{ NULL, 0 } |
|
}; |
|
|
|
static void analog_parse_options(void) |
|
{ |
|
int i, j; |
|
char *end; |
|
|
|
for (i = 0; i < js_nargs; i++) { |
|
|
|
for (j = 0; analog_types[j].name; j++) |
|
if (!strcmp(analog_types[j].name, js[i])) { |
|
analog_options[i] = analog_types[j].value; |
|
break; |
|
} |
|
if (analog_types[j].name) continue; |
|
|
|
analog_options[i] = simple_strtoul(js[i], &end, 0); |
|
if (end != js[i]) continue; |
|
|
|
analog_options[i] = 0xff; |
|
if (!strlen(js[i])) continue; |
|
|
|
printk(KERN_WARNING "analog.c: Bad config for port %d - \"%s\"\n", i, js[i]); |
|
} |
|
|
|
for (; i < ANALOG_PORTS; i++) |
|
analog_options[i] = 0xff; |
|
} |
|
|
|
/* |
|
* The gameport device structure. |
|
*/ |
|
|
|
static struct gameport_driver analog_drv = { |
|
.driver = { |
|
.name = "analog", |
|
}, |
|
.description = DRIVER_DESC, |
|
.connect = analog_connect, |
|
.disconnect = analog_disconnect, |
|
}; |
|
|
|
static int __init analog_init(void) |
|
{ |
|
analog_parse_options(); |
|
return gameport_register_driver(&analog_drv); |
|
} |
|
|
|
static void __exit analog_exit(void) |
|
{ |
|
gameport_unregister_driver(&analog_drv); |
|
} |
|
|
|
module_init(analog_init); |
|
module_exit(analog_exit);
|
|
|