--- /dev/null
+/*
+ * 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 (cpu_has_tsc) rdtscl(x); else x = get_time_pit(); } while (0)
+#define DELTA(x,y) (cpu_has_tsc ? ((y) - (x)) : ((x) - (y) + ((x) < (y) ? PIT_TICK_RATE / HZ : 0)))
+#define TIME_NAME (cpu_has_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;
+}
+#elif defined(__x86_64__)
+#define GET_TIME(x) rdtscl(x)
+#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;
+ }
+}
+
+static inline unsigned int delta(u64 x, u64 y)
+{
+ if (use_ktime)
+ return y - x;
+ else
+ return DELTA((unsigned int)x, (unsigned int)y);
+}
+
+/*
+ * 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);
+}
+
+/*
+ * 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);
+}
+
+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));
+}
+
+/*
+ * 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);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 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);
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 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));
+}
+
+/*
+ * 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;
+}
+
+/*
+ * 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);
+}
+
+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);
+}
+
+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);
Code Review / kvmfornfv.git / blobdiff