[libpicofe.git] / linux / in_evdev.c

/*
 * (C) Gražvydas "notaz" Ignotas, 2008-2012
 *
 * This work is licensed under the terms of any of these licenses
 * (at your option):
 *  - GNU GPL, version 2 or later.
 *  - GNU LGPL, version 2.1 or later.
 *  - MAME license.
 * See the COPYING file in the top-level directory.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <linux/input.h>
#include <errno.h>

#include "../input.h"
#include "in_evdev.h"

#define MAX_ABS_DEVS 8

typedef struct {
	int fd;
	int *kbits;
	int abs_min_x; /* abs->digital mapping */
	int abs_max_x;
	int abs_min_y;
	int abs_max_y;
	int abs_lzone;
	int abs_lastx;
	int abs_lasty;
	int kc_first;
	int kc_last;
	unsigned int abs_count;
	int abs_mult[MAX_ABS_DEVS]; /* 16.16 multiplier to IN_ABS_RANGE */
	int abs_adj[MAX_ABS_DEVS];  /* adjust for centering */
	unsigned int abs_to_digital:1;

	const in_drv_t *drv;
} in_evdev_t;

#ifndef KEY_CNT
#define KEY_CNT (KEY_MAX + 1)
#endif

#define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
	(1 << ((x) & (sizeof(keybits[0])*8-1))))

#define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] |= \
	(1 << ((x) & (sizeof(keybits[0])*8-1))))

#define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
	~(1 << ((x) & (sizeof(keybits[0])*8-1))))

int in_evdev_allow_abs_only;

#define IN_EVDEV_PREFIX "evdev:"

static const char * const in_evdev_keys[KEY_CNT] = {
	// [0 ... KEY_MAX] = NULL, // not necessary
	[KEY_RESERVED] = "Reserved",		[KEY_ESC] = "Esc",
	[KEY_1] = "1",				[KEY_2] = "2",
	[KEY_3] = "3",				[KEY_4] = "4",
	[KEY_5] = "5",				[KEY_6] = "6",
	[KEY_7] = "7",				[KEY_8] = "8",
	[KEY_9] = "9",				[KEY_0] = "0",
	[KEY_MINUS] = "Minus",			[KEY_EQUAL] = "Equal",
	[KEY_BACKSPACE] = "Backspace",		[KEY_TAB] = "Tab",
	[KEY_Q] = "Q",				[KEY_W] = "W",
	[KEY_E] = "E",				[KEY_R] = "R",
	[KEY_T] = "T",				[KEY_Y] = "Y",
	[KEY_U] = "U",				[KEY_I] = "I",
	[KEY_O] = "O",				[KEY_P] = "P",
	[KEY_LEFTBRACE] = "LeftBrace",		[KEY_RIGHTBRACE] = "RightBrace",
	[KEY_ENTER] = "Enter",			[KEY_LEFTCTRL] = "LeftControl",
	[KEY_A] = "A",				[KEY_S] = "S",
	[KEY_D] = "D",				[KEY_F] = "F",
	[KEY_G] = "G",				[KEY_H] = "H",
	[KEY_J] = "J",				[KEY_K] = "K",
	[KEY_L] = "L",				[KEY_SEMICOLON] = "Semicolon",
	[KEY_APOSTROPHE] = "Apostrophe",	[KEY_GRAVE] = "Grave",
	[KEY_LEFTSHIFT] = "LeftShift",		[KEY_BACKSLASH] = "BackSlash",
	[KEY_Z] = "Z",				[KEY_X] = "X",
	[KEY_C] = "C",				[KEY_V] = "V",
	[KEY_B] = "B",				[KEY_N] = "N",
	[KEY_M] = "M",				[KEY_COMMA] = "Comma",
	[KEY_DOT] = "Dot",			[KEY_SLASH] = "Slash",
	[KEY_RIGHTSHIFT] = "RightShift",	[KEY_KPASTERISK] = "KPAsterisk",
	[KEY_LEFTALT] = "LeftAlt",		[KEY_SPACE] = "Space",
	[KEY_CAPSLOCK] = "CapsLock",		[KEY_F1] = "F1",
	[KEY_F2] = "F2",			[KEY_F3] = "F3",
	[KEY_F4] = "F4",			[KEY_F5] = "F5",
	[KEY_F6] = "F6",			[KEY_F7] = "F7",
	[KEY_F8] = "F8",			[KEY_F9] = "F9",
	[KEY_F10] = "F10",			[KEY_NUMLOCK] = "NumLock",
	[KEY_SCROLLLOCK] = "ScrollLock",	[KEY_KP7] = "KP7",
	[KEY_KP8] = "KP8",			[KEY_KP9] = "KP9",
	[KEY_KPMINUS] = "KPMinus",		[KEY_KP4] = "KP4",
	[KEY_KP5] = "KP5",			[KEY_KP6] = "KP6",
	[KEY_KPPLUS] = "KPPlus",		[KEY_KP1] = "KP1",
	[KEY_KP2] = "KP2",			[KEY_KP3] = "KP3",
	[KEY_KP0] = "KP0",			[KEY_KPDOT] = "KPDot",
	[KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
	[KEY_F11] = "F11",			[KEY_F12] = "F12",
	[KEY_KPJPCOMMA] = "KPJpComma",		[KEY_KPENTER] = "KPEnter",
	[KEY_RIGHTCTRL] = "RightCtrl",		[KEY_KPSLASH] = "KPSlash",
	[KEY_SYSRQ] = "SysRq",			[KEY_RIGHTALT] = "RightAlt",
	[KEY_LINEFEED] = "LineFeed",		[KEY_HOME] = "Home",
	[KEY_UP] = "Up",			[KEY_PAGEUP] = "PageUp",
	[KEY_LEFT] = "Left",			[KEY_RIGHT] = "Right",
	[KEY_END] = "End",			[KEY_DOWN] = "Down",
	[KEY_PAGEDOWN] = "PageDown",		[KEY_INSERT] = "Insert",
	[KEY_DELETE] = "Delete",		[KEY_MACRO] = "Macro",
	[KEY_HELP] = "Help",			[KEY_MENU] = "Menu",
	[KEY_COFFEE] = "Coffee",		[KEY_DIRECTION] = "Direction",
	[BTN_0] = "Btn0",			[BTN_1] = "Btn1",
	[BTN_2] = "Btn2",			[BTN_3] = "Btn3",
	[BTN_4] = "Btn4",			[BTN_5] = "Btn5",
	[BTN_6] = "Btn6",			[BTN_7] = "Btn7",
	[BTN_8] = "Btn8",			[BTN_9] = "Btn9",
	[BTN_LEFT] = "LeftBtn",			[BTN_RIGHT] = "RightBtn",
	[BTN_MIDDLE] = "MiddleBtn",		[BTN_SIDE] = "SideBtn",
	[BTN_EXTRA] = "ExtraBtn",		[BTN_FORWARD] = "ForwardBtn",
	[BTN_BACK] = "BackBtn",			[BTN_TASK] = "TaskBtn",
	[BTN_TRIGGER] = "Trigger",		[BTN_THUMB] = "ThumbBtn",
	[BTN_THUMB2] = "ThumbBtn2",		[BTN_TOP] = "TopBtn",
	[BTN_TOP2] = "TopBtn2",			[BTN_PINKIE] = "PinkieBtn",
	[BTN_BASE] = "BaseBtn",			[BTN_BASE2] = "BaseBtn2",
	[BTN_BASE3] = "BaseBtn3",		[BTN_BASE4] = "BaseBtn4",
	[BTN_BASE5] = "BaseBtn5",		[BTN_BASE6] = "BaseBtn6",
	[BTN_DEAD] = "BtnDead",			[BTN_A] = "BtnA",
	[BTN_B] = "BtnB",			[BTN_C] = "BtnC",
	[BTN_X] = "BtnX",			[BTN_Y] = "BtnY",
	[BTN_Z] = "BtnZ",			[BTN_TL] = "BtnTL",
	[BTN_TR] = "BtnTR",			[BTN_TL2] = "BtnTL2",
	[BTN_TR2] = "BtnTR2",			[BTN_SELECT] = "BtnSelect",
	[BTN_START] = "BtnStart",		[BTN_MODE] = "BtnMode",
	[BTN_THUMBL] = "BtnThumbL",		[BTN_THUMBR] = "BtnThumbR",
	[BTN_TOUCH] = "Touch",			[BTN_STYLUS] = "Stylus",
	[BTN_STYLUS2] = "Stylus2",		[BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
	[BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
	[BTN_GEAR_UP] = "Gear up",		[KEY_OK] = "Ok",
};


static void in_evdev_probe(const in_drv_t *drv)
{
	long keybits[KEY_CNT / sizeof(long) / 8];
	long absbits[(ABS_MAX+1) / sizeof(long) / 8];
	int i;

	// the kernel might support and return less keys then we know about,
	// so make sure the buffers are clear.
	memset(keybits, 0, sizeof(keybits));
	memset(absbits, 0, sizeof(absbits));

	for (i = 0;; i++)
	{
		int support = 0, count = 0;
		int u, ret, fd, kc_first = KEY_MAX, kc_last = 0, have_abs = 0;
		in_evdev_t *dev;
		char name[64];

		snprintf(name, sizeof(name), "/dev/input/event%d", i);
		fd = open(name, O_RDONLY|O_NONBLOCK);
		if (fd == -1) {
			if (errno == EACCES)
				continue;	/* maybe we can access next one */
			break;
		}

		/* check supported events */
		ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
		if (ret == -1) {
			printf("in_evdev: ioctl failed on %s\n", name);
			goto skip;
		}

		if (support & (1 << EV_KEY)) {
			ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
			if (ret == -1) {
				printf("in_evdev: ioctl failed on %s\n", name);
				goto skip;
			}

			/* check for interesting keys */
			for (u = 0; u < KEY_CNT; u++) {
				if (KEYBITS_BIT(u)) {
					if (u < kc_first)
						kc_first = u;
					if (u > kc_last)
						kc_last = u;
					if (u != KEY_POWER && u != KEY_SLEEP && u != BTN_TOUCH)
						count++;
					if (u == BTN_TOUCH) /* we can't deal with ts currently */
						goto skip;
				}
			}
		}

		dev = calloc(1, sizeof(*dev));
		if (dev == NULL)
			goto skip;

		dev->drv = drv;

		ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
		if (ret == -1) {
			printf("Warning: EVIOCGKEY not supported, will have to track state\n");
			dev->kbits = calloc(KEY_CNT, sizeof(int));
			if (dev->kbits == NULL) {
				free(dev);
				goto skip;
			}
		}

		/* check for abs too */
		if (support & (1 << EV_ABS)) {
			struct input_absinfo ainfo;
			int dist;
			ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
			if (ret == -1)
				goto no_abs;
			if (absbits[0] & (1 << ABS_X)) {
				ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
				if (ret == -1)
					goto no_abs;
				dist = ainfo.maximum - ainfo.minimum;
				dev->abs_lzone = dist / 4;
				dev->abs_min_x = ainfo.minimum;
				dev->abs_max_x = ainfo.maximum;
			}
			if (absbits[0] & (1 << ABS_Y)) {
				ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
				if (ret == -1)
					goto no_abs;
				dist = ainfo.maximum - ainfo.minimum;
				dev->abs_min_y = ainfo.minimum;
				dev->abs_max_y = ainfo.maximum;
			}
			for (u = 0; u < MAX_ABS_DEVS; u++) {
				ret = ioctl(fd, EVIOCGABS(u), &ainfo);
				if (ret == -1)
					break;
				dist = ainfo.maximum - ainfo.minimum;
				if (dist != 0)
					dev->abs_mult[u] = IN_ABS_RANGE * 2 * 65536 / dist;
				dev->abs_adj[u] = -(ainfo.maximum + ainfo.minimum + 1) / 2;
				have_abs = 1;
			}
			dev->abs_count = u;
		}

no_abs:
		if (count == 0 && !have_abs) {
			free(dev);
			goto skip;
		}

		dev->fd = fd;
		dev->kc_first = kc_first;
		dev->kc_last = kc_last;
		if (count > 0 || in_evdev_allow_abs_only)
			dev->abs_to_digital = 1;
		strcpy(name, IN_EVDEV_PREFIX);
		ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
		printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
			name+6, count, support);
		in_register(name, fd, dev, KEY_CNT, in_evdev_keys, 0);
		continue;

skip:
		close(fd);
	}
}

static void in_evdev_free(void *drv_data)
{
	in_evdev_t *dev = drv_data;
	if (dev == NULL)
		return;
	close(dev->fd);
	free(dev);
}

static const char * const *
in_evdev_get_key_names(int *count)
{
	*count = KEY_CNT;
	return in_evdev_keys;
}

static void or_binds(const int *binds, int key, int *result)
{
	int t;
	for (t = 0; t < IN_BINDTYPE_COUNT; t++)
		result[t] |= binds[IN_BIND_OFFS(key, t)];
}

/* ORs result with binds of pressed buttons
 * XXX: should measure performance hit of this func, might need to optimize */
static int in_evdev_update(void *drv_data, const int *binds, int *result)
{
	struct input_event ev[16];
	struct input_absinfo ainfo;
	int keybits_[KEY_CNT / sizeof(int)];
	int *keybits = keybits_;
	in_evdev_t *dev = drv_data;
	int rd, ret, u, lzone;

	if (dev->kbits == NULL) {
		ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits_)), keybits_);
		if (ret == -1) {
			perror("in_evdev: ioctl failed");
			return -1;
		}
	}
	else {
		keybits = dev->kbits;
		while (1) {
			rd = read(dev->fd, ev, sizeof(ev));
			if (rd < (int)sizeof(ev[0])) {
				if (errno != EAGAIN)
					perror("in_evdev: read failed");
				break;
			}
			for (u = 0; u < rd / sizeof(ev[0]); u++) {
				if (ev[u].type != EV_KEY)
					continue;
				else if (ev[u].value == 1)
					KEYBITS_BIT_SET(ev[u].code);
				else if (ev[u].value == 0)
					KEYBITS_BIT_CLEAR(ev[u].code);
			}
		}
	}

	for (u = dev->kc_first; u <= dev->kc_last; u++) {
		if (KEYBITS_BIT(u))
			or_binds(binds, u, result);
	}

	/* map X and Y absolute to UDLR */
	lzone = dev->abs_lzone;
	if (dev->abs_to_digital && lzone != 0) {
		ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
		if (ret != -1) {
			if (ainfo.value < dev->abs_min_x + lzone) or_binds(binds, KEY_LEFT, result);
			if (ainfo.value > dev->abs_max_x - lzone) or_binds(binds, KEY_RIGHT, result);
		}
		ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
		if (ret != -1) {
			if (ainfo.value < dev->abs_min_y + lzone) or_binds(binds, KEY_UP, result);
			if (ainfo.value > dev->abs_max_y - lzone) or_binds(binds, KEY_DOWN, result);
		}
	}

	return 0;
}

static int in_evdev_update_analog(void *drv_data, int axis_id, int *result)
{
	struct input_absinfo ainfo;
	in_evdev_t *dev = drv_data;
	int ret;

	if ((unsigned int)axis_id >= MAX_ABS_DEVS)
		return -1;

	ret = ioctl(dev->fd, EVIOCGABS(axis_id), &ainfo);
	if (ret != 0)
		return ret;

	*result = (ainfo.value + dev->abs_adj[axis_id]) * dev->abs_mult[axis_id];
	*result >>= 16;
	return 0;
}

static int in_evdev_set_blocking(in_evdev_t *dev, int y)
{
	long flags;
	int ret;

	flags = (long)fcntl(dev->fd, F_GETFL);
	if ((int)flags == -1) {
		perror("in_evdev: F_GETFL fcntl failed");
		return -1;
	}

	if (flags & O_NONBLOCK) {
		/* flush the event queue */
		struct input_event ev;
		do {
			ret = read(dev->fd, &ev, sizeof(ev));
		}
		while (ret == sizeof(ev));
	}

	if (y)
		flags &= ~O_NONBLOCK;
	else
		flags |=  O_NONBLOCK;
	ret = fcntl(dev->fd, F_SETFL, flags);
	if (ret == -1) {
		perror("in_evdev: F_SETFL fcntl failed");
		return -1;
	}

	return 0;
}

static int in_evdev_get_config(void *drv_data, int what, int *val)
{
	in_evdev_t *dev = drv_data;

	switch (what) {
	case IN_CFG_ABS_AXIS_COUNT:
		*val = dev->abs_count;
		break;
	default:
		return -1;
	}

	return 0;
}

static int in_evdev_set_config(void *drv_data, int what, int val)
{
	in_evdev_t *dev = drv_data;
	int tmp;

	switch (what) {
	case IN_CFG_BLOCKING:
		return in_evdev_set_blocking(dev, val);
	case IN_CFG_ABS_DEAD_ZONE:
		if (val < 1 || val > 99 || dev->abs_lzone == 0)
			return -1;
		/* XXX: based on X axis only, for now.. */
		tmp = (dev->abs_max_x - dev->abs_min_x) / 2;
		dev->abs_lzone = tmp - tmp * val / 100;
		if (dev->abs_lzone < 1)
			dev->abs_lzone = 1;
		else if (dev->abs_lzone >= tmp)
			dev->abs_lzone = tmp - 1;
		break;
	default:
		return -1;
	}

	return 0;
}

static int in_evdev_update_keycode(void *data, int *is_down)
{
	int ret_kc = -1, ret_down = 0;
	in_evdev_t *dev = data;
	struct input_event ev;
	int rd;

	/* do single event, the caller sometimes wants
	 * to do select() in blocking mode */
	rd = read(dev->fd, &ev, sizeof(ev));
	if (rd < (int) sizeof(ev)) {
		if (errno != EAGAIN) {
			perror("in_evdev: error reading");
			//sleep(1);
			ret_kc = -2;
		}
		goto out;
	}

	if (ev.type == EV_KEY) {
		if (ev.value < 0 || ev.value > 1)
			goto out;
		ret_kc = ev.code;
		ret_down = ev.value;
		goto out;
	}
	else if (ev.type == EV_ABS && dev->abs_to_digital)
	{
		int lzone = dev->abs_lzone, down = 0, *last;

		// map absolute to up/down/left/right
		if (lzone != 0 && ev.code == ABS_X) {
			if (ev.value < dev->abs_min_x + lzone)
				down = KEY_LEFT;
			else if (ev.value > dev->abs_max_x - lzone)
				down = KEY_RIGHT;
			last = &dev->abs_lastx;
		}
		else if (lzone != 0 && ev.code == ABS_Y) {
			if (ev.value < dev->abs_min_y + lzone)
				down = KEY_UP;
			else if (ev.value > dev->abs_max_y - lzone)
				down = KEY_DOWN;
			last = &dev->abs_lasty;
		}
		else
			goto out;

		if (down == *last)
			goto out;

		if (down == 0 || *last != 0) {
			/* key up or direction change, return up event for old key */
			ret_kc = *last;
			ret_down = 0;
			*last = 0;
			goto out;
		}
		ret_kc = *last = down;
		ret_down = 1;
		goto out;
	}

out:
	if (is_down != NULL)
		*is_down = ret_down;

	return ret_kc;
}

static int in_evdev_menu_translate(void *drv_data, int keycode, char *charcode)
{
	in_evdev_t *dev = drv_data;
	const struct in_pdata *pdata = dev->drv->pdata;
	int ret = 0;
	int i;

	if (keycode < 0)
	{
		/* menu -> kc */
		keycode = -keycode;
		for (i = 0; i < pdata->kmap_size; i++)
			if (pdata->key_map[i].pbtn == keycode) {
				int k = pdata->key_map[i].key;
				/* should really check EVIOCGBIT, but this is enough for now */
				if (dev->kc_first <= k && k <= dev->kc_last)
					return k;
			}
	}
	else
	{
		for (i = 0; i < pdata->kmap_size; i++) {
			if (pdata->key_map[i].key == keycode) {
				ret = pdata->key_map[i].pbtn;
				break;
			}
		}

		if (charcode != NULL && (unsigned int)keycode < KEY_CNT &&
		    in_evdev_keys[keycode] != NULL && in_evdev_keys[keycode][1] == 0)
		{
			char c = in_evdev_keys[keycode][0];
			if ('A' <= c && c <= 'Z')
				c = 'a' + c - 'A';
			ret |= PBTN_CHAR;
			*charcode = c;
		}
	}

	return ret;
}

/* remove binds of missing keys, count remaining ones */
static int in_evdev_clean_binds(void *drv_data, int *binds, int *def_binds)
{
	int keybits[KEY_CNT / sizeof(int)];
	in_evdev_t *dev = drv_data;
	int i, t, ret, offs, count = 0;

	memset(keybits, 0, sizeof(keybits));
	ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
	if (ret == -1) {
		perror("in_evdev: ioctl failed");
		// memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
	}

	if (dev->abs_to_digital && dev->abs_lzone != 0) {
		KEYBITS_BIT_SET(KEY_LEFT);
		KEYBITS_BIT_SET(KEY_RIGHT);
		KEYBITS_BIT_SET(KEY_UP);
		KEYBITS_BIT_SET(KEY_DOWN);
	}

	for (i = 0; i < KEY_CNT; i++) {
		for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
			offs = IN_BIND_OFFS(i, t);
			if (!KEYBITS_BIT(i))
				binds[offs] = def_binds[offs] = 0;
			if (binds[offs])
				count++;
		}
	}

	return count;
}

static const in_drv_t in_evdev_drv = {
	.prefix         = IN_EVDEV_PREFIX,
	.probe          = in_evdev_probe,
	.free           = in_evdev_free,
	.get_key_names  = in_evdev_get_key_names,
	.clean_binds    = in_evdev_clean_binds,
	.get_config     = in_evdev_get_config,
	.set_config     = in_evdev_set_config,
	.update         = in_evdev_update,
	.update_analog  = in_evdev_update_analog,
	.update_keycode = in_evdev_update_keycode,
	.menu_translate = in_evdev_menu_translate,
};

int in_evdev_init(const struct in_pdata *pdata)
{
	if (!pdata) {
		fprintf(stderr, "in_sdl: Missing input platform data\n");
		return -1;
	}

	in_register_driver(&in_evdev_drv, pdata->defbinds, pdata);
	return 0;
}
Commit	Line	Data
	1	/*
	2	* (C) Gražvydas "notaz" Ignotas, 2008-2012
	3	*
	4	* This work is licensed under the terms of any of these licenses
	5	* (at your option):
	6	* - GNU GPL, version 2 or later.
	7	* - GNU LGPL, version 2.1 or later.
	8	* - MAME license.
	9	* See the COPYING file in the top-level directory.
	10	*/
	11
	12	#include <stdio.h>
	13	#include <stdlib.h>
	14	#include <string.h>
	15	#include <sys/types.h>
	16	#include <sys/stat.h>
	17	#include <fcntl.h>
	18	#include <sys/ioctl.h>
	19	#include <unistd.h>
	20	#include <linux/input.h>
	21	#include <errno.h>
	22
	23	#include "../input.h"
	24	#include "in_evdev.h"
	25
	26	#define MAX_ABS_DEVS 8
	27
	28	typedef struct {
	29	int fd;
	30	int *kbits;
	31	int abs_min_x; /* abs->digital mapping */
	32	int abs_max_x;
	33	int abs_min_y;
	34	int abs_max_y;
	35	int abs_lzone;
	36	int abs_lastx;
	37	int abs_lasty;
	38	int kc_first;
	39	int kc_last;
	40	unsigned int abs_count;
	41	int abs_mult[MAX_ABS_DEVS]; /* 16.16 multiplier to IN_ABS_RANGE */
	42	int abs_adj[MAX_ABS_DEVS]; /* adjust for centering */
	43	unsigned int abs_to_digital:1;
	44
	45	const in_drv_t *drv;
	46	} in_evdev_t;
	47
	48	#ifndef KEY_CNT
	49	#define KEY_CNT (KEY_MAX + 1)
	50	#endif
	51
	52	#define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
	53	(1 << ((x) & (sizeof(keybits[0])*8-1))))
	54
	55	#define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] \|= \
	56	(1 << ((x) & (sizeof(keybits[0])*8-1))))
	57
	58	#define KEYBITS_BIT_CLEAR(x) (keybits[(x)/sizeof(keybits[0])/8] &= \
	59	~(1 << ((x) & (sizeof(keybits[0])*8-1))))
	60
	61	int in_evdev_allow_abs_only;
	62
	63	#define IN_EVDEV_PREFIX "evdev:"
	64
	65	static const char * const in_evdev_keys[KEY_CNT] = {
	66	// [0 ... KEY_MAX] = NULL, // not necessary
	67	[KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
	68	[KEY_1] = "1", [KEY_2] = "2",
	69	[KEY_3] = "3", [KEY_4] = "4",
	70	[KEY_5] = "5", [KEY_6] = "6",
	71	[KEY_7] = "7", [KEY_8] = "8",
	72	[KEY_9] = "9", [KEY_0] = "0",
	73	[KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
	74	[KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
	75	[KEY_Q] = "Q", [KEY_W] = "W",
	76	[KEY_E] = "E", [KEY_R] = "R",
	77	[KEY_T] = "T", [KEY_Y] = "Y",
	78	[KEY_U] = "U", [KEY_I] = "I",
	79	[KEY_O] = "O", [KEY_P] = "P",
	80	[KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
	81	[KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
	82	[KEY_A] = "A", [KEY_S] = "S",
	83	[KEY_D] = "D", [KEY_F] = "F",
	84	[KEY_G] = "G", [KEY_H] = "H",
	85	[KEY_J] = "J", [KEY_K] = "K",
	86	[KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
	87	[KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
	88	[KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
	89	[KEY_Z] = "Z", [KEY_X] = "X",
	90	[KEY_C] = "C", [KEY_V] = "V",
	91	[KEY_B] = "B", [KEY_N] = "N",
	92	[KEY_M] = "M", [KEY_COMMA] = "Comma",
	93	[KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
	94	[KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
	95	[KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
	96	[KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
	97	[KEY_F2] = "F2", [KEY_F3] = "F3",
	98	[KEY_F4] = "F4", [KEY_F5] = "F5",
	99	[KEY_F6] = "F6", [KEY_F7] = "F7",
	100	[KEY_F8] = "F8", [KEY_F9] = "F9",
	101	[KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
	102	[KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
	103	[KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
	104	[KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
	105	[KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
	106	[KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
	107	[KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
	108	[KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
	109	[KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
	110	[KEY_F11] = "F11", [KEY_F12] = "F12",
	111	[KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
	112	[KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
	113	[KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
	114	[KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
	115	[KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
	116	[KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
	117	[KEY_END] = "End", [KEY_DOWN] = "Down",
	118	[KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
	119	[KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
	120	[KEY_HELP] = "Help", [KEY_MENU] = "Menu",
	121	[KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
	122	[BTN_0] = "Btn0", [BTN_1] = "Btn1",
	123	[BTN_2] = "Btn2", [BTN_3] = "Btn3",
	124	[BTN_4] = "Btn4", [BTN_5] = "Btn5",
	125	[BTN_6] = "Btn6", [BTN_7] = "Btn7",
	126	[BTN_8] = "Btn8", [BTN_9] = "Btn9",
	127	[BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
	128	[BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
	129	[BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
	130	[BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
	131	[BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
	132	[BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
	133	[BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
	134	[BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
	135	[BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
	136	[BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
	137	[BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
	138	[BTN_B] = "BtnB", [BTN_C] = "BtnC",
	139	[BTN_X] = "BtnX", [BTN_Y] = "BtnY",
	140	[BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
	141	[BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
	142	[BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
	143	[BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
	144	[BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
	145	[BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
	146	[BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
	147	[BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
	148	[BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
	149	};
	150
	151
	152	static void in_evdev_probe(const in_drv_t *drv)
	153	{
	154	long keybits[KEY_CNT / sizeof(long) / 8];
	155	long absbits[(ABS_MAX+1) / sizeof(long) / 8];
	156	int i;
	157
	158	// the kernel might support and return less keys then we know about,
	159	// so make sure the buffers are clear.
	160	memset(keybits, 0, sizeof(keybits));
	161	memset(absbits, 0, sizeof(absbits));
	162
	163	for (i = 0;; i++)
	164	{
	165	int support = 0, count = 0;
	166	int u, ret, fd, kc_first = KEY_MAX, kc_last = 0, have_abs = 0;
	167	in_evdev_t *dev;
	168	char name[64];
	169
	170	snprintf(name, sizeof(name), "/dev/input/event%d", i);
	171	fd = open(name, O_RDONLY\|O_NONBLOCK);
	172	if (fd == -1) {
	173	if (errno == EACCES)
	174	continue; /* maybe we can access next one */
	175	break;
	176	}
	177
	178	/* check supported events */
	179	ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
	180	if (ret == -1) {
	181	printf("in_evdev: ioctl failed on %s\n", name);
	182	goto skip;
	183	}
	184
	185	if (support & (1 << EV_KEY)) {
	186	ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
	187	if (ret == -1) {
	188	printf("in_evdev: ioctl failed on %s\n", name);
	189	goto skip;
	190	}
	191
	192	/* check for interesting keys */
	193	for (u = 0; u < KEY_CNT; u++) {
	194	if (KEYBITS_BIT(u)) {
	195	if (u < kc_first)
	196	kc_first = u;
	197	if (u > kc_last)
	198	kc_last = u;
	199	if (u != KEY_POWER && u != KEY_SLEEP && u != BTN_TOUCH)
	200	count++;
	201	if (u == BTN_TOUCH) /* we can't deal with ts currently */
	202	goto skip;
	203	}
	204	}
	205	}
	206
	207	dev = calloc(1, sizeof(*dev));
	208	if (dev == NULL)
	209	goto skip;
	210
	211	dev->drv = drv;
	212
	213	ret = ioctl(fd, EVIOCGKEY(sizeof(keybits)), keybits);
	214	if (ret == -1) {
	215	printf("Warning: EVIOCGKEY not supported, will have to track state\n");
	216	dev->kbits = calloc(KEY_CNT, sizeof(int));
	217	if (dev->kbits == NULL) {
	218	free(dev);
	219	goto skip;
	220	}
	221	}
	222
	223	/* check for abs too */
	224	if (support & (1 << EV_ABS)) {
	225	struct input_absinfo ainfo;
	226	int dist;
	227	ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
	228	if (ret == -1)
	229	goto no_abs;
	230	if (absbits[0] & (1 << ABS_X)) {
	231	ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
	232	if (ret == -1)
	233	goto no_abs;
	234	dist = ainfo.maximum - ainfo.minimum;
	235	dev->abs_lzone = dist / 4;
	236	dev->abs_min_x = ainfo.minimum;
	237	dev->abs_max_x = ainfo.maximum;
	238	}
	239	if (absbits[0] & (1 << ABS_Y)) {
	240	ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
	241	if (ret == -1)
	242	goto no_abs;
	243	dist = ainfo.maximum - ainfo.minimum;
	244	dev->abs_min_y = ainfo.minimum;
	245	dev->abs_max_y = ainfo.maximum;
	246	}
	247	for (u = 0; u < MAX_ABS_DEVS; u++) {
	248	ret = ioctl(fd, EVIOCGABS(u), &ainfo);
	249	if (ret == -1)
	250	break;
	251	dist = ainfo.maximum - ainfo.minimum;
	252	if (dist != 0)
	253	dev->abs_mult[u] = IN_ABS_RANGE * 2 * 65536 / dist;
	254	dev->abs_adj[u] = -(ainfo.maximum + ainfo.minimum + 1) / 2;
	255	have_abs = 1;
	256	}
	257	dev->abs_count = u;
	258	}
	259
	260	no_abs:
	261	if (count == 0 && !have_abs) {
	262	free(dev);
	263	goto skip;
	264	}
	265
	266	dev->fd = fd;
	267	dev->kc_first = kc_first;
	268	dev->kc_last = kc_last;
	269	if (count > 0 \|\| in_evdev_allow_abs_only)
	270	dev->abs_to_digital = 1;
	271	strcpy(name, IN_EVDEV_PREFIX);
	272	ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
	273	printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
	274	name+6, count, support);
	275	in_register(name, fd, dev, KEY_CNT, in_evdev_keys, 0);
	276	continue;
	277
	278	skip:
	279	close(fd);
	280	}
	281	}
	282
	283	static void in_evdev_free(void *drv_data)
	284	{
	285	in_evdev_t *dev = drv_data;
	286	if (dev == NULL)
	287	return;
	288	close(dev->fd);
	289	free(dev);
	290	}
	291
	292	static const char * const *
	293	in_evdev_get_key_names(int *count)
	294	{
	295	*count = KEY_CNT;
	296	return in_evdev_keys;
	297	}
	298
	299	static void or_binds(const int binds, int key, int result)
	300	{
	301	int t;
	302	for (t = 0; t < IN_BINDTYPE_COUNT; t++)
	303	result[t] \|= binds[IN_BIND_OFFS(key, t)];
	304	}
	305
	306	/* ORs result with binds of pressed buttons
	307	* XXX: should measure performance hit of this func, might need to optimize */
	308	static int in_evdev_update(void drv_data, const int binds, int *result)
	309	{
	310	struct input_event ev[16];
	311	struct input_absinfo ainfo;
	312	int keybits_[KEY_CNT / sizeof(int)];
	313	int *keybits = keybits_;
	314	in_evdev_t *dev = drv_data;
	315	int rd, ret, u, lzone;
	316
	317	if (dev->kbits == NULL) {
	318	ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits_)), keybits_);
	319	if (ret == -1) {
	320	perror("in_evdev: ioctl failed");
	321	return -1;
	322	}
	323	}
	324	else {
	325	keybits = dev->kbits;
	326	while (1) {
	327	rd = read(dev->fd, ev, sizeof(ev));
	328	if (rd < (int)sizeof(ev[0])) {
	329	if (errno != EAGAIN)
	330	perror("in_evdev: read failed");
	331	break;
	332	}
	333	for (u = 0; u < rd / sizeof(ev[0]); u++) {
	334	if (ev[u].type != EV_KEY)
	335	continue;
	336	else if (ev[u].value == 1)
	337	KEYBITS_BIT_SET(ev[u].code);
	338	else if (ev[u].value == 0)
	339	KEYBITS_BIT_CLEAR(ev[u].code);
	340	}
	341	}
	342	}
	343
	344	for (u = dev->kc_first; u <= dev->kc_last; u++) {
	345	if (KEYBITS_BIT(u))
	346	or_binds(binds, u, result);
	347	}
	348
	349	/* map X and Y absolute to UDLR */
	350	lzone = dev->abs_lzone;
	351	if (dev->abs_to_digital && lzone != 0) {
	352	ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
	353	if (ret != -1) {
	354	if (ainfo.value < dev->abs_min_x + lzone) or_binds(binds, KEY_LEFT, result);
	355	if (ainfo.value > dev->abs_max_x - lzone) or_binds(binds, KEY_RIGHT, result);
	356	}
	357	ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
	358	if (ret != -1) {
	359	if (ainfo.value < dev->abs_min_y + lzone) or_binds(binds, KEY_UP, result);
	360	if (ainfo.value > dev->abs_max_y - lzone) or_binds(binds, KEY_DOWN, result);
	361	}
	362	}
	363
	364	return 0;
	365	}
	366
	367	static int in_evdev_update_analog(void drv_data, int axis_id, int result)
	368	{
	369	struct input_absinfo ainfo;
	370	in_evdev_t *dev = drv_data;
	371	int ret;
	372
	373	if ((unsigned int)axis_id >= MAX_ABS_DEVS)
	374	return -1;
	375
	376	ret = ioctl(dev->fd, EVIOCGABS(axis_id), &ainfo);
	377	if (ret != 0)
	378	return ret;
	379
	380	result = (ainfo.value + dev->abs_adj[axis_id]) dev->abs_mult[axis_id];
	381	*result >>= 16;
	382	return 0;
	383	}
	384
	385	static int in_evdev_set_blocking(in_evdev_t *dev, int y)
	386	{
	387	long flags;
	388	int ret;
	389
	390	flags = (long)fcntl(dev->fd, F_GETFL);
	391	if ((int)flags == -1) {
	392	perror("in_evdev: F_GETFL fcntl failed");
	393	return -1;
	394	}
	395
	396	if (flags & O_NONBLOCK) {
	397	/* flush the event queue */
	398	struct input_event ev;
	399	do {
	400	ret = read(dev->fd, &ev, sizeof(ev));
	401	}
	402	while (ret == sizeof(ev));
	403	}
	404
	405	if (y)
	406	flags &= ~O_NONBLOCK;
	407	else
	408	flags \|= O_NONBLOCK;
	409	ret = fcntl(dev->fd, F_SETFL, flags);
	410	if (ret == -1) {
	411	perror("in_evdev: F_SETFL fcntl failed");
	412	return -1;
	413	}
	414
	415	return 0;
	416	}
	417
	418	static int in_evdev_get_config(void drv_data, int what, int val)
	419	{
	420	in_evdev_t *dev = drv_data;
	421
	422	switch (what) {
	423	case IN_CFG_ABS_AXIS_COUNT:
	424	*val = dev->abs_count;
	425	break;
	426	default:
	427	return -1;
	428	}
	429
	430	return 0;
	431	}
	432
	433	static int in_evdev_set_config(void *drv_data, int what, int val)
	434	{
	435	in_evdev_t *dev = drv_data;
	436	int tmp;
	437
	438	switch (what) {
	439	case IN_CFG_BLOCKING:
	440	return in_evdev_set_blocking(dev, val);
	441	case IN_CFG_ABS_DEAD_ZONE:
	442	if (val < 1 \|\| val > 99 \|\| dev->abs_lzone == 0)
	443	return -1;
	444	/* XXX: based on X axis only, for now.. */
	445	tmp = (dev->abs_max_x - dev->abs_min_x) / 2;
	446	dev->abs_lzone = tmp - tmp * val / 100;
	447	if (dev->abs_lzone < 1)
	448	dev->abs_lzone = 1;
	449	else if (dev->abs_lzone >= tmp)
	450	dev->abs_lzone = tmp - 1;
	451	break;
	452	default:
	453	return -1;
	454	}
	455
	456	return 0;
	457	}
	458
	459	static int in_evdev_update_keycode(void data, int is_down)
	460	{
	461	int ret_kc = -1, ret_down = 0;
	462	in_evdev_t *dev = data;
	463	struct input_event ev;
	464	int rd;
	465
	466	/* do single event, the caller sometimes wants
	467	* to do select() in blocking mode */
	468	rd = read(dev->fd, &ev, sizeof(ev));
	469	if (rd < (int) sizeof(ev)) {
	470	if (errno != EAGAIN) {
	471	perror("in_evdev: error reading");
	472	//sleep(1);
	473	ret_kc = -2;
	474	}
	475	goto out;
	476	}
	477
	478	if (ev.type == EV_KEY) {
	479	if (ev.value < 0 \|\| ev.value > 1)
	480	goto out;
	481	ret_kc = ev.code;
	482	ret_down = ev.value;
	483	goto out;
	484	}
	485	else if (ev.type == EV_ABS && dev->abs_to_digital)
	486	{
	487	int lzone = dev->abs_lzone, down = 0, *last;
	488
	489	// map absolute to up/down/left/right
	490	if (lzone != 0 && ev.code == ABS_X) {
	491	if (ev.value < dev->abs_min_x + lzone)
	492	down = KEY_LEFT;
	493	else if (ev.value > dev->abs_max_x - lzone)
	494	down = KEY_RIGHT;
	495	last = &dev->abs_lastx;
	496	}
	497	else if (lzone != 0 && ev.code == ABS_Y) {
	498	if (ev.value < dev->abs_min_y + lzone)
	499	down = KEY_UP;
	500	else if (ev.value > dev->abs_max_y - lzone)
	501	down = KEY_DOWN;
	502	last = &dev->abs_lasty;
	503	}
	504	else
	505	goto out;
	506
	507	if (down == *last)
	508	goto out;
	509
	510	if (down == 0 \|\| *last != 0) {
	511	/* key up or direction change, return up event for old key */
	512	ret_kc = *last;
	513	ret_down = 0;
	514	*last = 0;
	515	goto out;
	516	}
	517	ret_kc = *last = down;
	518	ret_down = 1;
	519	goto out;
	520	}
	521
	522	out:
	523	if (is_down != NULL)
	524	*is_down = ret_down;
	525
	526	return ret_kc;
	527	}
	528
	529	static int in_evdev_menu_translate(void drv_data, int keycode, char charcode)
	530	{
	531	in_evdev_t *dev = drv_data;
	532	const struct in_pdata *pdata = dev->drv->pdata;
	533	int ret = 0;
	534	int i;
	535
	536	if (keycode < 0)
	537	{
	538	/* menu -> kc */
	539	keycode = -keycode;
	540	for (i = 0; i < pdata->kmap_size; i++)
	541	if (pdata->key_map[i].pbtn == keycode) {
	542	int k = pdata->key_map[i].key;
	543	/* should really check EVIOCGBIT, but this is enough for now */
	544	if (dev->kc_first <= k && k <= dev->kc_last)
	545	return k;
	546	}
	547	}
	548	else
	549	{
	550	for (i = 0; i < pdata->kmap_size; i++) {
	551	if (pdata->key_map[i].key == keycode) {
	552	ret = pdata->key_map[i].pbtn;
	553	break;
	554	}
	555	}
	556
	557	if (charcode != NULL && (unsigned int)keycode < KEY_CNT &&
	558	in_evdev_keys[keycode] != NULL && in_evdev_keys[keycode][1] == 0)
	559	{
	560	char c = in_evdev_keys[keycode][0];
	561	if ('A' <= c && c <= 'Z')
	562	c = 'a' + c - 'A';
	563	ret \|= PBTN_CHAR;
	564	*charcode = c;
	565	}
	566	}
	567
	568	return ret;
	569	}
	570
	571	/* remove binds of missing keys, count remaining ones */
	572	static int in_evdev_clean_binds(void drv_data, int binds, int *def_binds)
	573	{
	574	int keybits[KEY_CNT / sizeof(int)];
	575	in_evdev_t *dev = drv_data;
	576	int i, t, ret, offs, count = 0;
	577
	578	memset(keybits, 0, sizeof(keybits));
	579	ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
	580	if (ret == -1) {
	581	perror("in_evdev: ioctl failed");
	582	// memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
	583	}
	584
	585	if (dev->abs_to_digital && dev->abs_lzone != 0) {
	586	KEYBITS_BIT_SET(KEY_LEFT);
	587	KEYBITS_BIT_SET(KEY_RIGHT);
	588	KEYBITS_BIT_SET(KEY_UP);
	589	KEYBITS_BIT_SET(KEY_DOWN);
	590	}
	591
	592	for (i = 0; i < KEY_CNT; i++) {
	593	for (t = 0; t < IN_BINDTYPE_COUNT; t++) {
	594	offs = IN_BIND_OFFS(i, t);
	595	if (!KEYBITS_BIT(i))
	596	binds[offs] = def_binds[offs] = 0;
	597	if (binds[offs])
	598	count++;
	599	}
	600	}
	601
	602	return count;
	603	}
	604
	605	static const in_drv_t in_evdev_drv = {
	606	.prefix = IN_EVDEV_PREFIX,
	607	.probe = in_evdev_probe,
	608	.free = in_evdev_free,
	609	.get_key_names = in_evdev_get_key_names,
	610	.clean_binds = in_evdev_clean_binds,
	611	.get_config = in_evdev_get_config,
	612	.set_config = in_evdev_set_config,
	613	.update = in_evdev_update,
	614	.update_analog = in_evdev_update_analog,
	615	.update_keycode = in_evdev_update_keycode,
	616	.menu_translate = in_evdev_menu_translate,
	617	};
	618
	619	int in_evdev_init(const struct in_pdata *pdata)
	620	{
	621	if (!pdata) {
	622	fprintf(stderr, "in_sdl: Missing input platform data\n");
	623	return -1;
	624	}
	625
	626	in_register_driver(&in_evdev_drv, pdata->defbinds, pdata);
	627	return 0;
	628	}
	629