[libpicofe.git] / linux / in_evdev.c

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

typedef struct {
	int fd;
	int prev_update;
	int abs_lzone;
	int abs_rzone;
	int abs_tzone;
	int abs_bzone;
	int abs_lastx;
	int abs_lasty;
} in_evdev_t;

#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))))

static const char * const in_evdev_prefix = "evdev:";
static const char * const in_evdev_keys[KEY_MAX + 1] = {
	[0 ... KEY_MAX] = NULL,
	[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(void)
{
	int i;

	for (i = 0;; i++)
	{
		int keybits[(KEY_MAX+1)/sizeof(int)], absbits[(ABS_MAX+1)/sizeof(int)];
		int support = 0, count = 0;
		in_evdev_t *dev;
		int u, ret, fd;
		char name[64];

		snprintf(name, sizeof(name), "/dev/input/event%d", i);
		fd = open(name, O_RDONLY|O_NONBLOCK);
		if (fd == -1)
			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)))
			goto skip;

		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_MAX + 1; u++) {
			if (KEYBITS_BIT(u) && u != KEY_POWER && u != KEY_SLEEP)
				count++;
		}

		if (count == 0)
			goto skip;

		dev = calloc(1, sizeof(*dev));
		if (dev == NULL)
			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 = ainfo.minimum + dist / 4;
				dev->abs_rzone = ainfo.maximum - dist / 4;
			}
			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_tzone = ainfo.minimum + dist / 4;
				dev->abs_bzone = ainfo.maximum - dist / 4;
			}
		}

no_abs:
		dev->fd = fd;
		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, IN_DRVID_EVDEV, fd, dev, 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 int in_evdev_get_bind_count(void)
{
	return KEY_MAX + 1;
}

/* returns bitfield of binds of pressed buttons */
int in_evdev_update(void *drv_data, int *binds)
{
	struct input_event ev[16];
	struct input_absinfo ainfo;
	int keybits[(KEY_MAX+1)/sizeof(int)];
	in_evdev_t *dev = drv_data;
	int result = 0, changed = 0;
	int rd, ret, u;

	while (1) {
		rd = read(dev->fd, ev, sizeof(ev));
		if (rd < (int)sizeof(ev[0])) {
			if (errno != EAGAIN)
				perror("in_evdev: read failed");
			break;
		}

		changed = 1;
	}

	if (!changed)
		return dev->prev_update;

	ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits)), keybits);
	if (ret == -1) {
		perror("in_evdev: ioctl failed");
		return 0;
	}

	for (u = 0; u < KEY_MAX + 1; u++) {
		if (KEYBITS_BIT(u)) {
			result |= binds[u];
		}
	}

	/* map X and Y absolute to UDLR */
	if (dev->abs_lzone != 0) {
		ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
		if (ret != -1) {
			if (ainfo.value < dev->abs_lzone) result |= binds[KEY_LEFT];
			if (ainfo.value > dev->abs_rzone) result |= binds[KEY_RIGHT];
		}
	}
	if (dev->abs_tzone != 0) {
		ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
		if (ret != -1) {
			if (ainfo.value < dev->abs_tzone) result |= binds[KEY_UP];
			if (ainfo.value > dev->abs_bzone) result |= binds[KEY_DOWN];
		}
	}

	dev->prev_update = result;
	return result;
}

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

	dev->prev_update = 0;

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

static int in_evdev_update_keycode(void *data, int *is_down)
{
	in_evdev_t *dev = data;
	struct input_event ev;
	int rd;

	if (is_down != NULL)
		*is_down = 0;

	rd = read(dev->fd, &ev, sizeof(ev));
	if (rd < (int) sizeof(ev)) {
		if (errno != EAGAIN) {
			perror("in_evdev: error reading");
			sleep(1);
		}
		return -1;
	}

	if (ev.type == EV_KEY) {
		if (ev.value < 0 || ev.value > 1)
			return -1;
		if (is_down != NULL)
			*is_down = ev.value;
		return ev.code;
	}
	else if (ev.type == EV_ABS)
	{
		int down = 0;
		if (dev->abs_lzone != 0 && ev.code == ABS_X) {
			if (ev.value < dev->abs_lzone) {
				down = 1;
				dev->abs_lastx = KEY_LEFT;
			}
			else if (ev.value > dev->abs_rzone) {
				down = 1;
				dev->abs_lastx = KEY_RIGHT;
			}
			if (is_down != NULL)
				*is_down = down;
			return dev->abs_lastx;
		}
		if (dev->abs_tzone != 0 && ev.code == ABS_Y) {
			if (ev.value < dev->abs_tzone) {
				down = 1;
				dev->abs_lasty = KEY_UP;
			}
			else if (ev.value > dev->abs_bzone) {
				down = 1;
				dev->abs_lasty = KEY_DOWN;
			}
			if (is_down != NULL)
				*is_down = down;
			return dev->abs_lasty;
		}
	}

	return -1;
}

static int in_evdev_menu_translate(int keycode)
{
	switch (keycode) {
		case KEY_UP:	return PBTN_UP;
		case KEY_DOWN:	return PBTN_DOWN;
		case KEY_LEFT:	return PBTN_LEFT;
		case KEY_RIGHT:	return PBTN_RIGHT;
		case KEY_ENTER:
		case BTN_A:
		case BTN_TRIGGER:
			return PBTN_MOK;
		case KEY_ESC:
		case BTN_B:
		case BTN_THUMB:
			return PBTN_MBACK;
		case KEY_MENU:
			return PBTN_MENU;
		case KEY_LEFTBRACE:
			return PBTN_L;
		case KEY_RIGHTBRACE:
			return PBTN_R;
		default:	return 0;
	}
}

static int in_evdev_get_key_code(const char *key_name)
{
	int i;

	for (i = 0; i < KEY_MAX + 1; i++) {
		const char *k = in_evdev_keys[i];
		if (k != NULL && strcasecmp(k, key_name) == 0)
			return i;
	}

	return -1;
}

static const char *in_evdev_get_key_name(int keycode)
{
	const char *name = NULL;
	if (keycode >= 0 && keycode <= KEY_MAX)
		name = in_evdev_keys[keycode];
	if (name == NULL)
		name = "Unkn";
	
	return name;
}

static const struct {
	short code;
	short bit;
} in_evdev_def_binds[] =
{
	/* MXYZ SACB RLDU */
	{ KEY_UP,	0 },
	{ KEY_DOWN,	1 },
	{ KEY_LEFT,	2 },
	{ KEY_RIGHT,	3 },
	{ KEY_S,	4 },	/* B */
	{ BTN_B,	4 },
	{ KEY_D,	5 },	/* C */
	{ BTN_A,	5 },
	{ KEY_A,	6 },	/* A */
	{ BTN_Y,	6 },
	{ KEY_ENTER,	7 },
	{ BTN_START,	7 },
};

#define DEF_BIND_COUNT (sizeof(in_evdev_def_binds) / sizeof(in_evdev_def_binds[0]))

static void in_evdev_get_def_binds(int *binds)
{
	int i;

	for (i = 0; i < DEF_BIND_COUNT; i++)
		binds[in_evdev_def_binds[i].code] = 1 << in_evdev_def_binds[i].bit;
}

/* remove binds of missing keys, count remaining ones */
static int in_evdev_clean_binds(void *drv_data, int *binds)
{
	int keybits[(KEY_MAX+1)/sizeof(int)];
	in_evdev_t *dev = drv_data;
	int i, ret, count = 0;

	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_lzone != 0) {
		KEYBITS_BIT_SET(KEY_LEFT);
		KEYBITS_BIT_SET(KEY_RIGHT);
	}
	if (dev->abs_tzone != 0) {
		KEYBITS_BIT_SET(KEY_UP);
		KEYBITS_BIT_SET(KEY_DOWN);
	}

	for (i = 0; i < KEY_MAX + 1; i++) {
		if (!KEYBITS_BIT(i))
			binds[i] = binds[i + KEY_MAX + 1] = 0;
		if (binds[i])
			count++;
	}

	return count;
}

void in_evdev_init(void *vdrv)
{
	in_drv_t *drv = vdrv;

	drv->prefix = in_evdev_prefix;
	drv->probe = in_evdev_probe;
	drv->free = in_evdev_free;
	drv->get_bind_count = in_evdev_get_bind_count;
	drv->get_def_binds = in_evdev_get_def_binds;
	drv->clean_binds = in_evdev_clean_binds;
	drv->set_blocking = in_evdev_set_blocking;
	drv->update_keycode = in_evdev_update_keycode;
	drv->menu_translate = in_evdev_menu_translate;
	drv->get_key_code = in_evdev_get_key_code;
	drv->get_key_name = in_evdev_get_key_name;
}
Commit	Line	Data
d92ea048	1	#include <stdio.h>
86883f7f	2	#include <stdlib.h>
d92ea048	3	#include <string.h>
	4	#include <sys/types.h>
	5	#include <sys/stat.h>
	6	#include <fcntl.h>
	7	#include <sys/ioctl.h>
	8	#include <unistd.h>
	9	#include <linux/input.h>
	10	#include <errno.h>
	11
34581c95	12	#include "../common/common.h"
2258f158	13	#include "../common/input.h"
34581c95	14	#include "in_evdev.h"
d92ea048	15
86883f7f	16	typedef struct {
	17	int fd;
	18	int prev_update;
	19	int abs_lzone;
	20	int abs_rzone;
	21	int abs_tzone;
	22	int abs_bzone;
	23	int abs_lastx;
	24	int abs_lasty;
	25	} in_evdev_t;
	26
da767bd5	27	#define KEYBITS_BIT(x) (keybits[(x)/sizeof(keybits[0])/8] & \
d92ea048	28	(1 << ((x) & (sizeof(keybits[0])*8-1))))
d92ea048	29
86883f7f	30	#define KEYBITS_BIT_SET(x) (keybits[(x)/sizeof(keybits[0])/8] \|= \
	31	(1 << ((x) & (sizeof(keybits[0])*8-1))))
	32
da767bd5	33	static const char * const in_evdev_prefix = "evdev:";
da767bd5	34	static const char * const in_evdev_keys[KEY_MAX + 1] = {
595491c4	35	[0 ... KEY_MAX] = NULL,
	36	[KEY_RESERVED] = "Reserved", [KEY_ESC] = "Esc",
	37	[KEY_1] = "1", [KEY_2] = "2",
	38	[KEY_3] = "3", [KEY_4] = "4",
	39	[KEY_5] = "5", [KEY_6] = "6",
	40	[KEY_7] = "7", [KEY_8] = "8",
	41	[KEY_9] = "9", [KEY_0] = "0",
	42	[KEY_MINUS] = "Minus", [KEY_EQUAL] = "Equal",
	43	[KEY_BACKSPACE] = "Backspace", [KEY_TAB] = "Tab",
	44	[KEY_Q] = "Q", [KEY_W] = "W",
	45	[KEY_E] = "E", [KEY_R] = "R",
	46	[KEY_T] = "T", [KEY_Y] = "Y",
	47	[KEY_U] = "U", [KEY_I] = "I",
	48	[KEY_O] = "O", [KEY_P] = "P",
	49	[KEY_LEFTBRACE] = "LeftBrace", [KEY_RIGHTBRACE] = "RightBrace",
	50	[KEY_ENTER] = "Enter", [KEY_LEFTCTRL] = "LeftControl",
	51	[KEY_A] = "A", [KEY_S] = "S",
	52	[KEY_D] = "D", [KEY_F] = "F",
	53	[KEY_G] = "G", [KEY_H] = "H",
	54	[KEY_J] = "J", [KEY_K] = "K",
	55	[KEY_L] = "L", [KEY_SEMICOLON] = "Semicolon",
	56	[KEY_APOSTROPHE] = "Apostrophe", [KEY_GRAVE] = "Grave",
	57	[KEY_LEFTSHIFT] = "LeftShift", [KEY_BACKSLASH] = "BackSlash",
	58	[KEY_Z] = "Z", [KEY_X] = "X",
	59	[KEY_C] = "C", [KEY_V] = "V",
	60	[KEY_B] = "B", [KEY_N] = "N",
	61	[KEY_M] = "M", [KEY_COMMA] = "Comma",
	62	[KEY_DOT] = "Dot", [KEY_SLASH] = "Slash",
	63	[KEY_RIGHTSHIFT] = "RightShift", [KEY_KPASTERISK] = "KPAsterisk",
	64	[KEY_LEFTALT] = "LeftAlt", [KEY_SPACE] = "Space",
	65	[KEY_CAPSLOCK] = "CapsLock", [KEY_F1] = "F1",
	66	[KEY_F2] = "F2", [KEY_F3] = "F3",
	67	[KEY_F4] = "F4", [KEY_F5] = "F5",
	68	[KEY_F6] = "F6", [KEY_F7] = "F7",
	69	[KEY_F8] = "F8", [KEY_F9] = "F9",
	70	[KEY_F10] = "F10", [KEY_NUMLOCK] = "NumLock",
	71	[KEY_SCROLLLOCK] = "ScrollLock", [KEY_KP7] = "KP7",
	72	[KEY_KP8] = "KP8", [KEY_KP9] = "KP9",
	73	[KEY_KPMINUS] = "KPMinus", [KEY_KP4] = "KP4",
	74	[KEY_KP5] = "KP5", [KEY_KP6] = "KP6",
	75	[KEY_KPPLUS] = "KPPlus", [KEY_KP1] = "KP1",
	76	[KEY_KP2] = "KP2", [KEY_KP3] = "KP3",
	77	[KEY_KP0] = "KP0", [KEY_KPDOT] = "KPDot",
	78	[KEY_ZENKAKUHANKAKU] = "Zenkaku/Hankaku", [KEY_102ND] = "102nd",
	79	[KEY_F11] = "F11", [KEY_F12] = "F12",
	80	[KEY_KPJPCOMMA] = "KPJpComma", [KEY_KPENTER] = "KPEnter",
	81	[KEY_RIGHTCTRL] = "RightCtrl", [KEY_KPSLASH] = "KPSlash",
	82	[KEY_SYSRQ] = "SysRq", [KEY_RIGHTALT] = "RightAlt",
	83	[KEY_LINEFEED] = "LineFeed", [KEY_HOME] = "Home",
	84	[KEY_UP] = "Up", [KEY_PAGEUP] = "PageUp",
	85	[KEY_LEFT] = "Left", [KEY_RIGHT] = "Right",
	86	[KEY_END] = "End", [KEY_DOWN] = "Down",
	87	[KEY_PAGEDOWN] = "PageDown", [KEY_INSERT] = "Insert",
	88	[KEY_DELETE] = "Delete", [KEY_MACRO] = "Macro",
	89	[KEY_HELP] = "Help", [KEY_MENU] = "Menu",
	90	[KEY_COFFEE] = "Coffee", [KEY_DIRECTION] = "Direction",
	91	[BTN_0] = "Btn0", [BTN_1] = "Btn1",
	92	[BTN_2] = "Btn2", [BTN_3] = "Btn3",
	93	[BTN_4] = "Btn4", [BTN_5] = "Btn5",
	94	[BTN_6] = "Btn6", [BTN_7] = "Btn7",
	95	[BTN_8] = "Btn8", [BTN_9] = "Btn9",
	96	[BTN_LEFT] = "LeftBtn", [BTN_RIGHT] = "RightBtn",
	97	[BTN_MIDDLE] = "MiddleBtn", [BTN_SIDE] = "SideBtn",
	98	[BTN_EXTRA] = "ExtraBtn", [BTN_FORWARD] = "ForwardBtn",
99	[BTN_BACK] = "BackBtn", [BTN_TASK] = "TaskBtn",
100	[BTN_TRIGGER] = "Trigger", [BTN_THUMB] = "ThumbBtn",
101	[BTN_THUMB2] = "ThumbBtn2", [BTN_TOP] = "TopBtn",
102	[BTN_TOP2] = "TopBtn2", [BTN_PINKIE] = "PinkieBtn",
103	[BTN_BASE] = "BaseBtn", [BTN_BASE2] = "BaseBtn2",
104	[BTN_BASE3] = "BaseBtn3", [BTN_BASE4] = "BaseBtn4",
105	[BTN_BASE5] = "BaseBtn5", [BTN_BASE6] = "BaseBtn6",
106	[BTN_DEAD] = "BtnDead", [BTN_A] = "BtnA",
107	[BTN_B] = "BtnB", [BTN_C] = "BtnC",
108	[BTN_X] = "BtnX", [BTN_Y] = "BtnY",
109	[BTN_Z] = "BtnZ", [BTN_TL] = "BtnTL",
110	[BTN_TR] = "BtnTR", [BTN_TL2] = "BtnTL2",
111	[BTN_TR2] = "BtnTR2", [BTN_SELECT] = "BtnSelect",
112	[BTN_START] = "BtnStart", [BTN_MODE] = "BtnMode",
113	[BTN_THUMBL] = "BtnThumbL", [BTN_THUMBR] = "BtnThumbR",
114	[BTN_TOUCH] = "Touch", [BTN_STYLUS] = "Stylus",
115	[BTN_STYLUS2] = "Stylus2", [BTN_TOOL_DOUBLETAP] = "Tool Doubletap",
116	[BTN_TOOL_TRIPLETAP] = "Tool Tripletap", [BTN_GEAR_DOWN] = "WheelBtn",
117	[BTN_GEAR_UP] = "Gear up", [KEY_OK] = "Ok",
118	};
119
120
da767bd5	121	static void in_evdev_probe(void)
d92ea048	122	{
	123	int i;
	124
2258f158	125	for (i = 0;; i++)
d92ea048	126	{
86883f7f	127	int keybits[(KEY_MAX+1)/sizeof(int)], absbits[(ABS_MAX+1)/sizeof(int)];
d92ea048	128	int support = 0, count = 0;
86883f7f	129	in_evdev_t *dev;
86883f7f	130	int u, ret, fd;
d92ea048	131	char name[64];
	132
	133	snprintf(name, sizeof(name), "/dev/input/event%d", i);
0b3e1198	134	fd = open(name, O_RDONLY\|O_NONBLOCK);
d92ea048	135	if (fd == -1)
	136	break;
	137
	138	/* check supported events */
	139	ret = ioctl(fd, EVIOCGBIT(0, sizeof(support)), &support);
	140	if (ret == -1) {
2258f158	141	printf("in_evdev: ioctl failed on %s\n", name);
d92ea048	142	goto skip;
	143	}
	144
	145	if (!(support & (1 << EV_KEY)))
	146	goto skip;
	147
	148	ret = ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
	149	if (ret == -1) {
2258f158	150	printf("in_evdev: ioctl failed on %s\n", name);
d92ea048	151	goto skip;
	152	}
	153
d92ea048	154	/* check for interesting keys */
da767bd5	155	for (u = 0; u < KEY_MAX + 1; u++) {
da767bd5	156	if (KEYBITS_BIT(u) && u != KEY_POWER && u != KEY_SLEEP)
d92ea048	157	count++;
	158	}
	159
	160	if (count == 0)
	161	goto skip;
	162
86883f7f	163	dev = calloc(1, sizeof(*dev));
	164	if (dev == NULL)
	165	goto skip;
	166
	167	/* check for abs too */
	168	if (support & (1 << EV_ABS)) {
	169	struct input_absinfo ainfo;
	170	int dist;
	171	ret = ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(absbits)), absbits);
	172	if (ret == -1)
	173	goto no_abs;
	174	if (absbits[0] & (1 << ABS_X)) {
	175	ret = ioctl(fd, EVIOCGABS(ABS_X), &ainfo);
	176	if (ret == -1)
	177	goto no_abs;
	178	dist = ainfo.maximum - ainfo.minimum;
	179	dev->abs_lzone = ainfo.minimum + dist / 4;
	180	dev->abs_rzone = ainfo.maximum - dist / 4;
	181	}
	182	if (absbits[0] & (1 << ABS_Y)) {
	183	ret = ioctl(fd, EVIOCGABS(ABS_Y), &ainfo);
	184	if (ret == -1)
	185	goto no_abs;
	186	dist = ainfo.maximum - ainfo.minimum;
	187	dev->abs_tzone = ainfo.minimum + dist / 4;
	188	dev->abs_bzone = ainfo.maximum - dist / 4;
	189	}
	190	}
	191
	192	no_abs:
	193	dev->fd = fd;
da767bd5	194	strcpy(name, in_evdev_prefix);
2258f158	195	ioctl(fd, EVIOCGNAME(sizeof(name)-6), name+6);
	196	printf("in_evdev: found \"%s\" with %d events (type %08x)\n",
	197	name+6, count, support);
2c600560	198	in_register(name, IN_DRVID_EVDEV, fd, dev, 0);
d92ea048	199	continue;
	200
	201	skip:
	202	close(fd);
	203	}
d92ea048	204	}
d92ea048	205
da767bd5	206	static void in_evdev_free(void *drv_data)
2258f158	207	{
86883f7f	208	in_evdev_t *dev = drv_data;
	209	if (dev == NULL)
	210	return;
	211	close(dev->fd);
	212	free(dev);
2258f158	213	}
2258f158	214
da767bd5	215	static int in_evdev_get_bind_count(void)
d92ea048	216	{
da767bd5	217	return KEY_MAX + 1;
d92ea048	218	}
d92ea048	219
86883f7f	220	/* returns bitfield of binds of pressed buttons */
2258f158	221	int in_evdev_update(void drv_data, int binds)
d92ea048	222	{
d92ea048	223	struct input_event ev[16];
86883f7f	224	struct input_absinfo ainfo;
da767bd5	225	int keybits[(KEY_MAX+1)/sizeof(int)];
86883f7f	226	in_evdev_t *dev = drv_data;
2258f158	227	int result = 0, changed = 0;
2258f158	228	int rd, ret, u;
d92ea048	229
2258f158	230	while (1) {
86883f7f	231	rd = read(dev->fd, ev, sizeof(ev));
2258f158	232	if (rd < (int)sizeof(ev[0])) {
	233	if (errno != EAGAIN)
	234	perror("in_evdev: read failed");
	235	break;
d92ea048	236	}
d92ea048	237
2258f158	238	changed = 1;
2258f158	239	}
d92ea048	240
2258f158	241	if (!changed)
86883f7f	242	return dev->prev_update;
906bdc9f	243
86883f7f	244	ret = ioctl(dev->fd, EVIOCGKEY(sizeof(keybits)), keybits);
2258f158	245	if (ret == -1) {
	246	perror("in_evdev: ioctl failed");
	247	return 0;
	248	}
d92ea048	249
da767bd5	250	for (u = 0; u < KEY_MAX + 1; u++) {
da767bd5	251	if (KEYBITS_BIT(u)) {
2258f158	252	result \|= binds[u];
d92ea048	253	}
d92ea048	254	}
d92ea048	255
86883f7f	256	/* map X and Y absolute to UDLR */
	257	if (dev->abs_lzone != 0) {
	258	ret = ioctl(dev->fd, EVIOCGABS(ABS_X), &ainfo);
	259	if (ret != -1) {
	260	if (ainfo.value < dev->abs_lzone) result \|= binds[KEY_LEFT];
	261	if (ainfo.value > dev->abs_rzone) result \|= binds[KEY_RIGHT];
	262	}
	263	}
	264	if (dev->abs_tzone != 0) {
	265	ret = ioctl(dev->fd, EVIOCGABS(ABS_Y), &ainfo);
	266	if (ret != -1) {
	267	if (ainfo.value < dev->abs_tzone) result \|= binds[KEY_UP];
	268	if (ainfo.value > dev->abs_bzone) result \|= binds[KEY_DOWN];
	269	}
	270	}
	271
	272	dev->prev_update = result;
d92ea048	273	return result;
	274	}
	275
86883f7f	276	static void in_evdev_set_blocking(void *drv_data, int y)
34581c95	277	{
86883f7f	278	in_evdev_t *dev = drv_data;
34581c95	279	long flags;
595491c4	280	int ret;
34581c95	281
86883f7f	282	dev->prev_update = 0;
	283
	284	flags = (long)fcntl(dev->fd, F_GETFL);
595491c4	285	if ((int)flags == -1) {
	286	perror("in_evdev: F_GETFL fcntl failed");
	287	return;
34581c95	288	}
595491c4	289	if (y)
	290	flags &= ~O_NONBLOCK;
	291	else
	292	flags \|= O_NONBLOCK;
86883f7f	293	ret = fcntl(dev->fd, F_SETFL, flags);
595491c4	294	if (ret == -1)
	295	perror("in_evdev: F_SETFL fcntl failed");
	296	}
	297
7f022a8d	298	static int in_evdev_update_keycode(void data, int is_down)
595491c4	299	{
7f022a8d	300	in_evdev_t *dev = data;
	301	struct input_event ev;
	302	int rd;
906bdc9f	303
	304	if (is_down != NULL)
	305	*is_down = 0;
	306
7f022a8d	307	rd = read(dev->fd, &ev, sizeof(ev));
7f022a8d	308	if (rd < (int) sizeof(ev)) {
13b692eb	309	if (errno != EAGAIN) {
	310	perror("in_evdev: error reading");
	311	sleep(1);
	312	}
	313	return -1;
7f022a8d	314	}
34581c95	315
7f022a8d	316	if (ev.type == EV_KEY) {
7f022a8d	317	if (ev.value < 0 \|\| ev.value > 1)
13b692eb	318	return -1;
7f022a8d	319	if (is_down != NULL)
	320	*is_down = ev.value;
	321	return ev.code;
	322	}
	323	else if (ev.type == EV_ABS)
	324	{
	325	int down = 0;
	326	if (dev->abs_lzone != 0 && ev.code == ABS_X) {
	327	if (ev.value < dev->abs_lzone) {
	328	down = 1;
	329	dev->abs_lastx = KEY_LEFT;
	330	}
	331	else if (ev.value > dev->abs_rzone) {
	332	down = 1;
	333	dev->abs_lastx = KEY_RIGHT;
	334	}
54563d71	335	if (is_down != NULL)
7f022a8d	336	*is_down = down;
7f022a8d	337	return dev->abs_lastx;
54563d71	338	}
7f022a8d	339	if (dev->abs_tzone != 0 && ev.code == ABS_Y) {
	340	if (ev.value < dev->abs_tzone) {
	341	down = 1;
	342	dev->abs_lasty = KEY_UP;
86883f7f	343	}
7f022a8d	344	else if (ev.value > dev->abs_bzone) {
	345	down = 1;
	346	dev->abs_lasty = KEY_DOWN;
86883f7f	347	}
7f022a8d	348	if (is_down != NULL)
	349	*is_down = down;
	350	return dev->abs_lasty;
34581c95	351	}
34581c95	352	}
7f022a8d	353
13b692eb	354	return -1;
595491c4	355	}
34581c95	356
da767bd5	357	static int in_evdev_menu_translate(int keycode)
595491c4	358	{
595491c4	359	switch (keycode) {
595491c4	360	case KEY_UP: return PBTN_UP;
	361	case KEY_DOWN: return PBTN_DOWN;
	362	case KEY_LEFT: return PBTN_LEFT;
	363	case KEY_RIGHT: return PBTN_RIGHT;
86883f7f	364	case KEY_ENTER:
0b3e1198	365	case BTN_A:
2c600560	366	case BTN_TRIGGER:
2c600560	367	return PBTN_MOK;
86883f7f	368	case KEY_ESC:
0b3e1198	369	case BTN_B:
2c600560	370	case BTN_THUMB:
	371	return PBTN_MBACK;
	372	case KEY_MENU:
	373	return PBTN_MENU;
	374	case KEY_LEFTBRACE:
	375	return PBTN_L;
	376	case KEY_RIGHTBRACE:
	377	return PBTN_R;
595491c4	378	default: return 0;
34581c95	379	}
595491c4	380	}
34581c95	381
da767bd5	382	static int in_evdev_get_key_code(const char *key_name)
	383	{
	384	int i;
	385
	386	for (i = 0; i < KEY_MAX + 1; i++) {
	387	const char *k = in_evdev_keys[i];
13b692eb	388	if (k != NULL && strcasecmp(k, key_name) == 0)
da767bd5	389	return i;
	390	}
	391
	392	return -1;
	393	}
	394
	395	static const char *in_evdev_get_key_name(int keycode)
595491c4	396	{
595491c4	397	const char *name = NULL;
da767bd5	398	if (keycode >= 0 && keycode <= KEY_MAX)
595491c4	399	name = in_evdev_keys[keycode];
	400	if (name == NULL)
	401	name = "Unkn";
	402
	403	return name;
34581c95	404	}
34581c95	405
da767bd5	406	static const struct {
	407	short code;
	408	short bit;
	409	} in_evdev_def_binds[] =
	410	{
	411	/* MXYZ SACB RLDU */
	412	{ KEY_UP, 0 },
	413	{ KEY_DOWN, 1 },
	414	{ KEY_LEFT, 2 },
	415	{ KEY_RIGHT, 3 },
	416	{ KEY_S, 4 }, /* B */
0b3e1198	417	{ BTN_B, 4 },
da767bd5	418	{ KEY_D, 5 }, /* C */
0b3e1198	419	{ BTN_A, 5 },
da767bd5	420	{ KEY_A, 6 }, /* A */
0b3e1198	421	{ BTN_Y, 6 },
da767bd5	422	{ KEY_ENTER, 7 },
0b3e1198	423	{ BTN_START, 7 },
da767bd5	424	};
	425
	426	#define DEF_BIND_COUNT (sizeof(in_evdev_def_binds) / sizeof(in_evdev_def_binds[0]))
	427
	428	static void in_evdev_get_def_binds(int *binds)
	429	{
	430	int i;
	431
	432	for (i = 0; i < DEF_BIND_COUNT; i++)
	433	binds[in_evdev_def_binds[i].code] = 1 << in_evdev_def_binds[i].bit;
	434	}
	435
86883f7f	436	/* remove binds of missing keys, count remaining ones */
da767bd5	437	static int in_evdev_clean_binds(void drv_data, int binds)
	438	{
	439	int keybits[(KEY_MAX+1)/sizeof(int)];
86883f7f	440	in_evdev_t *dev = drv_data;
da767bd5	441	int i, ret, count = 0;
da767bd5	442
86883f7f	443	ret = ioctl(dev->fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
da767bd5	444	if (ret == -1) {
	445	perror("in_evdev: ioctl failed");
	446	memset(keybits, 0xff, sizeof(keybits)); /* mark all as good */
	447	}
	448
86883f7f	449	if (dev->abs_lzone != 0) {
	450	KEYBITS_BIT_SET(KEY_LEFT);
	451	KEYBITS_BIT_SET(KEY_RIGHT);
	452	}
	453	if (dev->abs_tzone != 0) {
	454	KEYBITS_BIT_SET(KEY_UP);
	455	KEYBITS_BIT_SET(KEY_DOWN);
	456	}
	457
da767bd5	458	for (i = 0; i < KEY_MAX + 1; i++) {
	459	if (!KEYBITS_BIT(i))
	460	binds[i] = binds[i + KEY_MAX + 1] = 0;
	461	if (binds[i])
	462	count++;
	463	}
	464
	465	return count;
	466	}
	467
	468	void in_evdev_init(void *vdrv)
	469	{
	470	in_drv_t *drv = vdrv;
	471
	472	drv->prefix = in_evdev_prefix;
	473	drv->probe = in_evdev_probe;
	474	drv->free = in_evdev_free;
	475	drv->get_bind_count = in_evdev_get_bind_count;
	476	drv->get_def_binds = in_evdev_get_def_binds;
	477	drv->clean_binds = in_evdev_clean_binds;
	478	drv->set_blocking = in_evdev_set_blocking;
7f022a8d	479	drv->update_keycode = in_evdev_update_keycode;
da767bd5	480	drv->menu_translate = in_evdev_menu_translate;
	481	drv->get_key_code = in_evdev_get_key_code;
	482	drv->get_key_name = in_evdev_get_key_name;
	483	}
	484