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Release 4.11 drivers/input/joystick/analog.c

/*
 *  Copyright (c) 1996-2001 Vojtech Pavlik
 */

/*
 * Analog joystick and gamepad driver for Linux
 */

/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Should you need to contact me, the author, you can do so either by
 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
 */

#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/gameport.h>
#include <linux/jiffies.h>
#include <linux/timex.h>
#include <linux/timekeeping.h>


#define DRIVER_DESC	"Analog joystick and gamepad driver"

MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");

MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");


static bool use_ktime = true;
module_param(use_ktime, bool, 0400);
MODULE_PARM_DESC(use_ktime, "Use ktime for measuring I/O speed");

/*
 * Option parsing.
 */


#define ANALOG_PORTS		16


static char *js[ANALOG_PORTS];

static unsigned int js_nargs;

static int analog_options[ANALOG_PORTS];
module_param_array_named(map, js, charp, &js_nargs, 0);
MODULE_PARM_DESC(map, "Describes analog joysticks type/capabilities");

/*
 * Times, feature definitions.
 */


#define ANALOG_RUDDER		0x00004

#define ANALOG_THROTTLE		0x00008

#define ANALOG_AXES_STD		0x0000f

#define ANALOG_BTNS_STD		0x000f0


#define ANALOG_BTNS_CHF		0x00100

#define ANALOG_HAT1_CHF		0x00200

#define ANALOG_HAT2_CHF		0x00400

#define ANALOG_HAT_FCS		0x00800

#define ANALOG_HATS_ALL		0x00e00

#define ANALOG_BTN_TL		0x01000

#define ANALOG_BTN_TR		0x02000

#define ANALOG_BTN_TL2		0x04000

#define ANALOG_BTN_TR2		0x08000

#define ANALOG_BTNS_TLR		0x03000

#define ANALOG_BTNS_TLR2	0x0c000

#define ANALOG_BTNS_GAMEPAD	0x0f000


#define ANALOG_HBTN_CHF		0x10000

#define ANALOG_ANY_CHF		0x10700

#define ANALOG_SAITEK		0x20000

#define ANALOG_EXTENSIONS	0x7ff00

#define ANALOG_GAMEPAD		0x80000


#define ANALOG_MAX_TIME		3	
/* 3 ms */

#define ANALOG_LOOP_TIME	2000	
/* 2 * loop */

#define ANALOG_SAITEK_DELAY	200	
/* 200 us */

#define ANALOG_SAITEK_TIME	2000	
/* 2000 us */

#define ANALOG_AXIS_TIME	2	
/* 2 * refresh */

#define ANALOG_INIT_RETRIES	8	
/* 8 times */

#define ANALOG_FUZZ_BITS	2	
/* 2 bit more */

#define ANALOG_FUZZ_MAGIC	36	
/* 36 u*ms/loop */


#define ANALOG_MAX_NAME_LENGTH  128

#define ANALOG_MAX_PHYS_LENGTH	32


static short analog_axes[] = { ABS_X, ABS_Y, ABS_RUDDER, ABS_THROTTLE };

static short analog_hats[] = { ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };

static short analog_pads[] = { BTN_Y, BTN_Z, BTN_TL, BTN_TR };

static short analog_exts[] = { ANALOG_HAT1_CHF, ANALOG_HAT2_CHF, ANALOG_HAT_FCS };

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 };

static short analog_joy_btn[] = { BTN_TRIGGER, BTN_THUMB, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2,
				  BTN_BASE3, BTN_BASE4, BTN_BASE5, BTN_BASE6 };


static unsigned char analog_chf[] = { 0xf, 0x0, 0x1, 0x9, 0x2, 0x4, 0xc, 0x8, 0x3, 0x5, 0xb, 0x7, 0xd, 0xe, 0xa, 0x6 };


struct analog {
	
struct input_dev *dev;
	
int mask;
	
short *buttons;
	
char name[ANALOG_MAX_NAME_LENGTH];
	
char phys[ANALOG_MAX_PHYS_LENGTH];
};


struct analog_port {
	
struct gameport *gameport;
	
struct analog analog[2];
	
unsigned char mask;
	
char saitek;
	
char cooked;
	
int bads;
	
int reads;
	
int speed;
	
int loop;
	
int fuzz;
	
int axes[4];
	
int buttons;
	
int initial[4];
	
int axtime;
};

/*
 * Time macros.
 */

#ifdef __i386__

#include <linux/i8253.h>


#define GET_TIME(x)	do { if (boot_cpu_has(X86_FEATURE_TSC)) x = (unsigned int)rdtsc(); else x = get_time_pit(); } while (0)

#define DELTA(x,y)	(boot_cpu_has(X86_FEATURE_TSC) ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0)))

#define TIME_NAME	(boot_cpu_has(X86_FEATURE_TSC)?"TSC":"PIT")

static unsigned int get_time_pit(void) { unsigned long flags; unsigned int count; raw_spin_lock_irqsave(&i8253_lock, flags); outb_p(0x00, 0x43); count = inb_p(0x40); count |= inb_p(0x40) << 8; raw_spin_unlock_irqrestore(&i8253_lock, flags); return count; }

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Vojtech Pavlik5796.61%150.00%
Thomas Gleixner23.39%150.00%
Total59100.00%2100.00%

#elif defined(__x86_64__) #define GET_TIME(x) do { x = (unsigned int)rdtsc(); } while (0) #define DELTA(x,y) ((y)-(x)) #define TIME_NAME "TSC" #elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_TILE) #define GET_TIME(x) do { x = get_cycles(); } while (0) #define DELTA(x,y) ((y)-(x)) #define TIME_NAME "get_cycles" #else #define FAKE_TIME static unsigned long analog_faketime = 0; #define GET_TIME(x) do { x = analog_faketime++; } while(0) #define DELTA(x,y) ((y)-(x)) #define TIME_NAME "Unreliable" #warning Precise timer not defined for this architecture. #endif
static inline u64 get_time(void) { if (use_ktime) { return ktime_get_ns(); } else { unsigned int x; GET_TIME(x); return x; } }

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Takashi Iwai34100.00%1100.00%
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static inline unsigned int delta(u64 x, u64 y) { if (use_ktime) return y - x; else return DELTA((unsigned int)x, (unsigned int)y); }

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Takashi Iwai40100.00%1100.00%
Total40100.00%1100.00%

/* * analog_decode() decodes analog joystick data and reports input events. */
static void analog_decode(struct analog *analog, int *axes, int *initial, int buttons) { struct input_dev *dev = analog->dev; int i, j; if (analog->mask & ANALOG_HAT_FCS) for (i = 0; i < 4; i++) if (axes[3] < ((initial[3] * ((i << 1) + 1)) >> 3)) { buttons |= 1 << (i + 14); break; } for (i = j = 0; i < 6; i++) if (analog->mask & (0x10 << i)) input_report_key(dev, analog->buttons[j++], (buttons >> i) & 1); if (analog->mask & ANALOG_HBTN_CHF) for (i = 0; i < 4; i++) input_report_key(dev, analog->buttons[j++], (buttons >> (i + 10)) & 1); if (analog->mask & ANALOG_BTN_TL) input_report_key(dev, analog_pads[0], axes[2] < (initial[2] >> 1)); if (analog->mask & ANALOG_BTN_TR) input_report_key(dev, analog_pads[1], axes[3] < (initial[3] >> 1)); if (analog->mask & ANALOG_BTN_TL2) input_report_key(dev, analog_pads[2], axes[2] > (initial[2] + (initial[2] >> 1))); if (analog->mask & ANALOG_BTN_TR2) input_report_key(dev, analog_pads[3], axes[3] > (initial[3] + (initial[3] >> 1))); for (i = j = 0; i < 4; i++) if (analog->mask & (1 << i)) input_report_abs(dev, analog_axes[j++], axes[i]); for (i = j = 0; i < 3; i++) if (analog->mask & analog_exts[i]) { input_report_abs(dev, analog_hats[j++], ((buttons >> ((i << 2) + 7)) & 1) - ((buttons >> ((i << 2) + 9)) & 1)); input_report_abs(dev, analog_hats[j++], ((buttons >> ((i << 2) + 8)) & 1) - ((buttons >> ((i << 2) + 6)) & 1)); } input_sync(dev); }

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Linus Torvalds (pre-git)49999.01%150.00%
Vojtech Pavlik50.99%150.00%
Total504100.00%2100.00%

/* * analog_cooked_read() reads analog joystick data. */
static int analog_cooked_read(struct analog_port *port) { struct gameport *gameport = port->gameport; u64 time[4], start, loop, now; unsigned int loopout, timeout; unsigned char data[4], this, last; unsigned long flags; int i, j; loopout = (ANALOG_LOOP_TIME * port->loop) / 1000; timeout = ANALOG_MAX_TIME * port->speed; local_irq_save(flags); gameport_trigger(gameport); now = get_time(); local_irq_restore(flags); start = now; this = port->mask; i = 0; do { loop = now; last = this; local_irq_disable(); this = gameport_read(gameport) & port->mask; now = get_time(); local_irq_restore(flags); if ((last ^ this) && (delta(loop, now) < loopout)) { data[i] = last ^ this; time[i] = now; i++; } } while (this && (i < 4) && (delta(start, now) < timeout)); this <<= 4; for (--i; i >= 0; i--) { this |= data[i]; for (j = 0; j < 4; j++) if (data[i] & (1 << j)) port->axes[j] = (delta(start, time[i]) << ANALOG_FUZZ_BITS) / port->loop; } return -(this != port->mask); }

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Linus Torvalds (pre-git)27894.24%125.00%
Takashi Iwai134.41%125.00%
Ingo Molnar41.36%250.00%
Total295100.00%4100.00%


static int analog_button_read(struct analog_port *port, char saitek, char chf) { unsigned char u; int t = 1, i = 0; int strobe = gameport_time(port->gameport, ANALOG_SAITEK_TIME); u = gameport_read(port->gameport); if (!chf) { port->buttons = (~u >> 4) & 0xf; return 0; } port->buttons = 0; while ((~u & 0xf0) && (i < 16) && t) { port->buttons |= 1 << analog_chf[(~u >> 4) & 0xf]; if (!saitek) return 0; udelay(ANALOG_SAITEK_DELAY); t = strobe; gameport_trigger(port->gameport); while (((u = gameport_read(port->gameport)) & port->mask) && t) t--; i++; } return -(!t || (i == 16)); }

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Linus Torvalds (pre-git)181100.00%1100.00%
Total181100.00%1100.00%

/* * analog_poll() repeatedly polls the Analog joysticks. */
static void analog_poll(struct gameport *gameport) { struct analog_port *port = gameport_get_drvdata(gameport); int i; char saitek = !!(port->analog[0].mask & ANALOG_SAITEK); char chf = !!(port->analog[0].mask & ANALOG_ANY_CHF); if (port->cooked) { port->bads -= gameport_cooked_read(port->gameport, port->axes, &port->buttons); if (chf) port->buttons = port->buttons ? (1 << analog_chf[port->buttons]) : 0; port->reads++; } else { if (!port->axtime--) { port->bads -= analog_cooked_read(port); port->bads -= analog_button_read(port, saitek, chf); port->reads++; port->axtime = ANALOG_AXIS_TIME - 1; } else { if (!saitek) analog_button_read(port, saitek, chf); } } for (i = 0; i < 2; i++) if (port->analog[i].mask) analog_decode(port->analog + i, port->axes, port->initial, port->buttons); }

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Linus Torvalds (pre-git)21996.05%150.00%
Dmitry Torokhov93.95%150.00%
Total228100.00%2100.00%

/* * analog_open() is a callback from the input open routine. */
static int analog_open(struct input_dev *dev) { struct analog_port *port = input_get_drvdata(dev); gameport_start_polling(port->gameport); return 0; }

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Linus Torvalds (pre-git)2683.87%133.33%
Dmitry Torokhov516.13%266.67%
Total31100.00%3100.00%

/* * analog_close() is a callback from the input close routine. */
static void analog_close(struct input_dev *dev) { struct analog_port *port = input_get_drvdata(dev); gameport_stop_polling(port->gameport); }

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Linus Torvalds (pre-git)2382.14%133.33%
Dmitry Torokhov517.86%266.67%
Total28100.00%3100.00%

/* * analog_calibrate_timer() calibrates the timer and computes loop * and timeout values for a joystick port. */
static void analog_calibrate_timer(struct analog_port *port) { struct gameport *gameport = port->gameport; unsigned int i, t, tx; u64 t1, t2, t3; unsigned long flags; if (use_ktime) { port->speed = 1000000; } else { local_irq_save(flags); t1 = get_time(); #ifdef FAKE_TIME analog_faketime += 830; #endif mdelay(1); t2 = get_time(); t3 = get_time(); local_irq_restore(flags); port->speed = delta(t1, t2) - delta(t2, t3); } tx = ~0; for (i = 0; i < 50; i++) { local_irq_save(flags); t1 = get_time(); for (t = 0; t < 50; t++) { gameport_read(gameport); t2 = get_time(); } t3 = get_time(); local_irq_restore(flags); udelay(i); t = delta(t1, t2) - delta(t2, t3); if (t < tx) tx = t; } port->loop = tx / 50; }

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Linus Torvalds (pre-git)17079.07%125.00%
Takashi Iwai3918.14%125.00%
Vojtech Pavlik62.79%250.00%
Total215100.00%4100.00%

/* * analog_name() constructs a name for an analog joystick. */
static void analog_name(struct analog *analog) { snprintf(analog->name, sizeof(analog->name), "Analog %d-axis %d-button", hweight8(analog->mask & ANALOG_AXES_STD), hweight8(analog->mask & ANALOG_BTNS_STD) + !!(analog->mask & ANALOG_BTNS_CHF) * 2 + hweight16(analog->mask & ANALOG_BTNS_GAMEPAD) + !!(analog->mask & ANALOG_HBTN_CHF) * 4); if (analog->mask & ANALOG_HATS_ALL) snprintf(analog->name, sizeof(analog->name), "%s %d-hat", analog->name, hweight16(analog->mask & ANALOG_HATS_ALL)); if (analog->mask & ANALOG_HAT_FCS) strlcat(analog->name, " FCS", sizeof(analog->name)); if (analog->mask & ANALOG_ANY_CHF) strlcat(analog->name, (analog->mask & ANALOG_SAITEK) ? " Saitek" : " CHF", sizeof(analog->name)); strlcat(analog->name, (analog->mask & ANALOG_GAMEPAD) ? " gamepad": " joystick", sizeof(analog->name)); }

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Linus Torvalds (pre-git)15979.90%150.00%
Dmitry Torokhov4020.10%150.00%
Total199100.00%2100.00%

/* * analog_init_device() */
static int analog_init_device(struct analog_port *port, struct analog *analog, int index) { struct input_dev *input_dev; int i, j, t, v, w, x, y, z; int error; analog_name(analog); snprintf(analog->phys, sizeof(analog->phys), "%s/input%d", port->gameport->phys, index); analog->buttons = (analog->mask & ANALOG_GAMEPAD) ? analog_pad_btn : analog_joy_btn; analog->dev = input_dev = input_allocate_device(); if (!input_dev) return -ENOMEM; input_dev->name = analog->name; input_dev->phys = analog->phys; input_dev->id.bustype = BUS_GAMEPORT; input_dev->id.vendor = GAMEPORT_ID_VENDOR_ANALOG; input_dev->id.product = analog->mask >> 4; input_dev->id.version = 0x0100; input_dev->dev.parent = &port->gameport->dev; input_set_drvdata(input_dev, port); input_dev->open = analog_open; input_dev->close = analog_close; input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); for (i = j = 0; i < 4; i++) if (analog->mask & (1 << i)) { t = analog_axes[j]; x = port->axes[i]; y = (port->axes[0] + port->axes[1]) >> 1; z = y - port->axes[i]; z = z > 0 ? z : -z; v = (x >> 3); w = (x >> 3); if ((i == 2 || i == 3) && (j == 2 || j == 3) && (z > (y >> 3))) x = y; if (analog->mask & ANALOG_SAITEK) { if (i == 2) x = port->axes[i]; v = x - (x >> 2); w = (x >> 4); } input_set_abs_params(input_dev, t, v, (x << 1) - v, port->fuzz, w); j++; } for (i = j = 0; i < 3; i++) if (analog->mask & analog_exts[i]) for (x = 0; x < 2; x++) { t = analog_hats[j++]; input_set_abs_params(input_dev, t, -1, 1, 0, 0); } for (i = j = 0; i < 4; i++) if (analog->mask & (0x10 << i)) set_bit(analog->buttons[j++], input_dev->keybit); if (analog->mask & ANALOG_BTNS_CHF) for (i = 0; i < 2; i++) set_bit(analog->buttons[j++], input_dev->keybit); if (analog->mask & ANALOG_HBTN_CHF) for (i = 0; i < 4; i++) set_bit(analog->buttons[j++], input_dev->keybit); for (i = 0; i < 4; i++) if (analog->mask & (ANALOG_BTN_TL << i)) set_bit(analog_pads[i], input_dev->keybit); analog_decode(analog, port->axes, port->initial, port->buttons); error = input_register_device(analog->dev); if (error) { input_free_device(analog->dev); return error; } return 0; }

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Linus Torvalds (pre-git)53178.43%110.00%
Dmitry Torokhov10515.51%550.00%
Vojtech Pavlik395.76%330.00%
Jiri Slaby20.30%110.00%
Total677100.00%10100.00%

/* * analog_init_devices() sets up device-specific values and registers the input devices. */
static int analog_init_masks(struct analog_port *port) { int i; struct analog *analog = port->analog; int max[4]; if (!port->mask) return -1; if ((port->mask & 3) != 3 && port->mask != 0xc) { printk(KERN_WARNING "analog.c: Unknown joystick device found " "(data=%#x, %s), probably not analog joystick.\n", port->mask, port->gameport->phys); return -1; } i = analog_options[0]; /* FIXME !!! - need to specify options for different ports */ analog[0].mask = i & 0xfffff; analog[0].mask &= ~(ANALOG_AXES_STD | ANALOG_HAT_FCS | ANALOG_BTNS_GAMEPAD) | port->mask | ((port->mask << 8) & ANALOG_HAT_FCS) | ((port->mask << 10) & ANALOG_BTNS_TLR) | ((port->mask << 12) & ANALOG_BTNS_TLR2); analog[0].mask &= ~(ANALOG_HAT2_CHF) | ((analog[0].mask & ANALOG_HBTN_CHF) ? 0 : ANALOG_HAT2_CHF); analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_BTN_TR | ANALOG_BTN_TR2) | ((~analog[0].mask & ANALOG_HAT_FCS) >> 8) | ((~analog[0].mask & ANALOG_HAT_FCS) << 2) | ((~analog[0].mask & ANALOG_HAT_FCS) << 4); analog[0].mask &= ~(ANALOG_THROTTLE | ANALOG_RUDDER) | (((~analog[0].mask & ANALOG_BTNS_TLR ) >> 10) & ((~analog[0].mask & ANALOG_BTNS_TLR2) >> 12)); analog[1].mask = ((i >> 20) & 0xff) | ((i >> 12) & 0xf0000); analog[1].mask &= (analog[0].mask & ANALOG_EXTENSIONS) ? ANALOG_GAMEPAD : (((ANALOG_BTNS_STD | port->mask) & ~analog[0].mask) | ANALOG_GAMEPAD); if (port->cooked) { for (i = 0; i < 4; i++) max[i] = port->axes[i] << 1; if ((analog[0].mask & 0x7) == 0x7) max[2] = (max[0] + max[1]) >> 1; if ((analog[0].mask & 0xb) == 0xb) max[3] = (max[0] + max[1]) >> 1; if ((analog[0].mask & ANALOG_BTN_TL) && !(analog[0].mask & ANALOG_BTN_TL2)) max[2] >>= 1; if ((analog[0].mask & ANALOG_BTN_TR) && !(analog[0].mask & ANALOG_BTN_TR2)) max[3] >>= 1; 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); }

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Linus Torvalds (pre-git)60899.35%150.00%
Vojtech Pavlik40.65%150.00%
Total612100.00%2100.00%


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 = (port->speed * 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); }

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Linus Torvalds (pre-git)36094.99%116.67%
Dmitry Torokhov133.43%350.00%
Greg Kroah-Hartman30.79%116.67%
Vojtech Pavlik30.79%116.67%
Total379100.00%6100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Torokhov11355.94%571.43%
Linus Torvalds (pre-git)8843.56%114.29%
Pekka J Enberg10.50%114.29%
Total202100.00%7100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)10086.96%125.00%
Dmitry Torokhov1311.30%250.00%
Vojtech Pavlik21.74%125.00%
Total115100.00%4100.00%

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; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)16799.40%150.00%
Dmitry Torokhov10.60%150.00%
Total168100.00%2100.00%

/* * 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); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1578.95%125.00%
Dmitry Torokhov315.79%250.00%
Adrian Bunk15.26%125.00%
Total19100.00%4100.00%


static void __exit analog_exit(void) { gameport_unregister_driver(&analog_drv); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1280.00%133.33%
Dmitry Torokhov213.33%133.33%
Adrian Bunk16.67%133.33%
Total15100.00%3100.00%

module_init(analog_init); module_exit(analog_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)405384.86%36.67%
Dmitry Torokhov3497.31%1328.89%
Takashi Iwai1513.16%12.22%
Vojtech Pavlik1312.74%613.33%
David Howells230.48%12.22%
Linus Torvalds180.38%36.67%
Arnd Bergmann90.19%24.44%
Al Viro60.13%12.22%
Ingo Molnar60.13%36.67%
Chris Metcalf50.10%12.22%
Mark Brown50.10%12.22%
Tim Schmielau30.06%12.22%
Borislav Petkov30.06%12.22%
Adrian Bunk30.06%12.22%
Greg Kroah-Hartman30.06%12.22%
Jiri Slaby20.04%12.22%
Thomas Gleixner20.04%12.22%
Andrew Lutomirski10.02%12.22%
Pekka J Enberg10.02%12.22%
Ralf Bächle10.02%12.22%
Rusty Russell10.02%12.22%
Total4776100.00%45100.00%
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