xref: /src/sys/arch/hpcmips/dev/ite8181.c

/*	$NetBSD: ite8181.c,v 1.31 2022/05/28 10:36:22 andvar Exp $	*/

/*-
 * Copyright (c) 2000,2001 SATO Kazumi
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ite8181.c,v 1.31 2022/05/28 10:36:22 andvar Exp $");

#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/boot_flag.h>
#include <sys/buf.h>

#include <uvm/uvm_extern.h>

#include <dev/wscons/wsconsio.h>

#include <machine/bootinfo.h>
#include <machine/bus.h>
#include <machine/autoconf.h>
#include <machine/config_hook.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>

#include <hpcmips/dev/ite8181reg.h>
#include <hpcmips/dev/ite8181var.h>
#include "bivideo.h"
#if NBIVIDEO > 0
#include <dev/hpc/bivideovar.h>
#endif
#include <dev/hpc/hpccmapvar.h>

#define ITE8181DEBUG
#ifdef ITE8181DEBUG
#ifndef ITE8181DEBUG_CONF
#define ITE8181DEBUG_CONF 0
#endif
int	ite8181_debug = ITE8181DEBUG_CONF;
#define	DPRINTF(arg)     if (ite8181_debug) printf arg
#define	DPRINTFN(n, arg) if (ite8181_debug > (n)) printf arg
#define	VPRINTF(arg)     if (bootverbose || ite8181_debug) printf arg
#define	VPRINTFN(n, arg) if (bootverbose || ite8181_debug > (n)) printf arg
#else
#define	DPRINTF(arg)
#define DPRINTFN(n, arg)
#define	VPRINTF(arg)     if (bootverbose) printf arg
#define	VPRINTFN(n, arg) if (bootverbose) printf arg
#endif

#ifndef ITE8181_LCD_CONTROL_ENABLE
int ite8181_lcd_control_disable = 1;
#else /* ITE8181_LCD_CONTROL_ENABLE */
int ite8181_lcd_control_disable = 0;
#endif /* ITE8181_LCD_CONTROL_ENABLE */

#define ITE8181_WINCE_CMAP

/*
 * XXX:
 * IBM WorkPad z50 power unit has too weak power.
 * So we must wait too many times to access some device
 * after LCD panel and BackLight on.
 * Currently delay is not enough ??? FIXME
 */
#ifndef ITE8181_LCD_ON_SELF_DELAY
#define ITE8181_LCD_ON_SELF_DELAY 1000
#endif /* ITE8181_LCD_ON__SELF_DELAY */
#ifndef ITE8181_LCD_ON_DELAY
#define ITE8181_LCD_ON_DELAY 2000
#endif /* ITE8181_LCD_ON_DELAY */
int ite8181_lcd_on_self_delay = ITE8181_LCD_ON_SELF_DELAY; /* msec */
int ite8181_lcd_on_delay = ITE8181_LCD_ON_DELAY; /* msec */

#define MSEC	1000
/*
 * function prototypes
 */
static void	ite8181_config_write_4(bus_space_tag_t, bus_space_handle_t,
		    int, int);
static int	ite8181_config_read_4(bus_space_tag_t, bus_space_handle_t,
		    int);
static void	ite8181_gui_write_4(struct ite8181_softc *, int, int);
static int	ite8181_gui_read_4(struct ite8181_softc *, int);

static void	ite8181_gui_write_1(struct ite8181_softc *, int, int);
static int	ite8181_gui_read_1(struct ite8181_softc *, int);

static void	ite8181_graphics_write_1(struct ite8181_softc *, int, int);
static int	ite8181_graphics_read_1(struct ite8181_softc *, int);

static void	ite8181_ema_write_1(struct ite8181_softc *, int, int);
static int	ite8181_ema_read_1(struct ite8181_softc *, int);

static void	ite8181_power(int, void *);
static int	ite8181_hardpower(void *, int, long, void *);
static int	ite8181_fbinit(struct hpcfb_fbconf *);
static int	ite8181_ioctl(void *, u_long, void *, int, struct lwp *);
static paddr_t	ite8181_mmap(void *, off_t offset, int);
static void	ite8181_erase_cursor(struct ite8181_softc *);
static int	ite8181_lcd_power(struct ite8181_softc *, int);

static void	ite8181_update_powerstate(struct ite8181_softc *, int);
void	ite8181_init_backlight(struct ite8181_softc *, int);
void	ite8181_init_brightness(struct ite8181_softc *, int);
void	ite8181_init_contrast(struct ite8181_softc *, int);
void	ite8181_set_brightness(struct ite8181_softc *, int);
void	ite8181_set_contrast(struct ite8181_softc *, int);

/*
 * static variables
 */
struct hpcfb_accessops ite8181_ha = {
	ite8181_ioctl, ite8181_mmap
};

inline int
ite8181_config_read_4(bus_space_tag_t iot, bus_space_handle_t ioh,
    int byteoffset)
{

	return (bus_space_read_4(iot, ioh, ITE8181_CONF_OFFSET + byteoffset));
}

inline void
ite8181_config_write_4(bus_space_tag_t iot, bus_space_handle_t ioh,
    int byteoffset, int data)
{

	bus_space_write_4(iot, ioh, ITE8181_CONF_OFFSET + byteoffset, data);
}

inline int
ite8181_gui_read_4(struct ite8181_softc *sc, int byteoffset)
{

	return (bus_space_read_4(sc->sc_iot, sc->sc_ioh,
	    sc->sc_gba + byteoffset));
}

inline void
ite8181_gui_write_4(struct ite8181_softc *sc, int byteoffset, int data)
{

	bus_space_write_4(sc->sc_iot, sc->sc_ioh, sc->sc_gba + byteoffset,
	    data);
}

inline int
ite8181_gui_read_1(struct ite8181_softc *sc, int byteoffset)
{

	return (bus_space_read_1(sc->sc_iot, sc->sc_ioh,
	    sc->sc_gba + byteoffset));
}

inline void
ite8181_gui_write_1(struct ite8181_softc *sc, int byteoffset, int data)
{

	bus_space_write_1(sc->sc_iot, sc->sc_ioh, sc->sc_gba + byteoffset,
	    data);
}

inline int
ite8181_graphics_read_1(struct ite8181_softc *sc, int byteoffset)
{

	return (bus_space_read_1(sc->sc_iot, sc->sc_ioh,
	    sc->sc_sba + byteoffset));
}

inline void
ite8181_graphics_write_1(struct ite8181_softc *sc, int byteoffset, int data)
{

	bus_space_write_1(sc->sc_iot, sc->sc_ioh, sc->sc_sba + byteoffset,
	    data);
}

inline int
ite8181_ema_read_1(struct ite8181_softc *sc, int byteoffset)
{

	ite8181_graphics_write_1(sc, ITE8181_EMA_EXAX, byteoffset);
	return (ite8181_graphics_read_1(sc, ITE8181_EMA_EXADATA));
}

inline void
ite8181_ema_write_1(struct ite8181_softc *sc, int byteoffset, int data)
{

	ite8181_graphics_write_1(sc, ITE8181_EMA_EXAX, byteoffset);
	ite8181_graphics_write_1(sc, ITE8181_EMA_EXADATA, data);
}

int
ite8181_probe(bus_space_tag_t iot, bus_space_handle_t ioh)
{
	unsigned long regval;

#if NBIVIDEO > 0
	if (bivideo_dont_attach)  /* some video driver already attached */
		return (0);
#endif /* NBIVIDEO > 0 */

	regval = ite8181_config_read_4(iot, ioh, ITE8181_ID);
	VPRINTF(("ite8181_probe: vendor id=%04lx product id=%04lx\n",
	    regval & 0xffff, (regval >> 16) & 0xffff));
	if (regval != ((ITE8181_PRODUCT_ID << 16) | ITE8181_VENDER_ID))
		return (0);

	return (1);
}

void
ite8181_attach(struct ite8181_softc *sc)
{
	unsigned long regval;
	struct hpcfb_attach_args ha;
	int console = (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) ? 0 : 1;

	printf(": ");
	if (ite8181_fbinit(&sc->sc_fbconf) != 0) {
		/* just return so that hpcfb will not be attached */
		return;
	}

	regval = ite8181_config_read_4(sc->sc_iot, sc->sc_ioh, ITE8181_CLASS);
	printf("ITE8181 Rev.%02lx", regval & ITE8181_REV_MASK);
	if (console) {
		printf(", console");
	}
	printf("\n");
	printf("%s: framebuffer address: 0x%08lx\n",
	    device_xname(sc->sc_dev), (u_long)bootinfo->fb_addr);
	if (ite8181_lcd_control_disable)
		printf("%s: ite8181 lcd control is DISABLED.\n",
		    device_xname(sc->sc_dev));

	/* set base offsets */
	sc->sc_mba = ite8181_config_read_4(sc->sc_iot, sc->sc_ioh, ITE8181_MBA);
	DPRINTFN(1, ("ite8181: Memory base offset %08x\n", sc->sc_mba));
	sc->sc_gba = ite8181_config_read_4(sc->sc_iot, sc->sc_ioh, ITE8181_GBA);
	DPRINTFN(1, ("ite8181: GUI base offset %08x\n", sc->sc_gba));
	sc->sc_sba = ite8181_config_read_4(sc->sc_iot, sc->sc_ioh, ITE8181_SBA);
	DPRINTFN(1, ("ite8181: Graphics base offset %08x\n", sc->sc_sba));

	/* assume lcd is on */
	sc->sc_lcd = 1;
	/* erase wince cursor */
	ite8181_erase_cursor(sc);

	/* Add a power hook to power saving */
	sc->sc_powerhook = powerhook_establish(device_xname(sc->sc_dev),
	    ite8181_power, sc);
	if (sc->sc_powerhook == NULL)
		printf("%s: WARNING: unable to establish power hook\n",
		    device_xname(sc->sc_dev));

	/* Add a hard power hook to power saving */
	sc->sc_hardpowerhook = config_hook(CONFIG_HOOK_PMEVENT,
	    CONFIG_HOOK_PMEVENT_HARDPOWER,
	    CONFIG_HOOK_SHARE,
	    ite8181_hardpower, sc);
	if (sc->sc_hardpowerhook == NULL)
		printf("%s: WARNING: unable to establish hard power hook\n",
		    device_xname(sc->sc_dev));

	/* initialize backlight brightness and lcd contrast */
	sc->sc_lcd_inited = 0;
	ite8181_init_brightness(sc, 1);
	ite8181_init_contrast(sc, 1);
	ite8181_init_backlight(sc, 1);

	if (console && hpcfb_cnattach(&sc->sc_fbconf) != 0) {
		panic("ite8181_attach: can't init fb console");
	}

	ha.ha_console = console;
	ha.ha_accessops = &ite8181_ha;
	ha.ha_accessctx = sc;
	ha.ha_curfbconf = 0;
	ha.ha_nfbconf = 1;
	ha.ha_fbconflist = &sc->sc_fbconf;
	ha.ha_curdspconf = 0;
	ha.ha_ndspconf = 1;
	ha.ha_dspconflist = &sc->sc_dspconf;

	config_found(sc->sc_dev, &ha, hpcfbprint, CFARGS_NONE);

#if NBIVIDEO > 0
	/*
	 * bivideo is no longer need
	 */
	bivideo_dont_attach = 1;
#endif /* NBIVIDEO > 0 */
}

int
ite8181_lcd_power(struct ite8181_softc *sc, int on)
{
	int lcd_p;
	int lcd_s;
	int lcd_seq;
	int loop = 10;

	if (ite8181_lcd_control_disable) {
		VPRINTF(("ite8171_lcd_control_disable!: %s\n", on?"on":"off"));
		return 0;
	}

	if (sc->sc_lcd != on) {
		ite8181_ema_write_1(sc, ITE8181_EMA_ENABLEEMA,
		    ITE8181_EMA_ENABLEPASS);
		lcd_p = ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWER);
		lcd_s = ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWERSTAT);
		lcd_seq = ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWERSEQ);
		DPRINTFN(1,("ite8181_lcd_power(%d)< p=%x, s=%x, seq=%x\n",
		    on,
		    lcd_p, lcd_s, lcd_seq));
		if (on) {
			sc->sc_lcd = 1;
			lcd_seq |= (ITE8181_PUP0|ITE8181_PUP1|ITE8181_PUP2);
			ite8181_ema_write_1(sc, ITE8181_EMA_LCDPOWERSEQ,
			    lcd_seq);
			lcd_p &= ~ITE8181_LCDSTANDBY;
			ite8181_ema_write_1(sc, ITE8181_EMA_LCDPOWER, lcd_p);
			/*
			 * XXX:
			 * IBM WorkPad z50 power unit has too weak power.
			 * So we must wait too many times to access self device
			 * after LCD panel and BackLight on.
			 * Currently delay is not enough ??? FIXME
			 */
			delay(ite8181_lcd_on_self_delay*MSEC);
			while (loop--) {
				lcd_p = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWER);
				lcd_s = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWERSTAT);
				lcd_seq = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWERSEQ);
				DPRINTFN(1,("ite8181_lcd_power(%d)%d| p=%x,"
				    " s=%x, seq=%x\n", on, loop, lcd_p, lcd_s,
				    lcd_seq));
				/*
				 *  XXX the states which are not described
				 *  XXX in manual.
				 */
				if (!(lcd_s&ITE8181_LCDPSTANDBY) &&
				    !(lcd_s&ITE8181_LCDPUP) &&
				    (lcd_s&ITE8181_LCDPON))
					break;
				delay(100);
			}
			lcd_s |= ITE8181_PPTOBEON;
			ite8181_ema_write_1(sc, ITE8181_EMA_LCDPOWERSTAT,
			    lcd_s);
		} else {
			sc->sc_lcd = 0;
			lcd_p |= ITE8181_LCDSTANDBY;
			ite8181_ema_write_1(sc, ITE8181_EMA_LCDPOWER, lcd_p);
			while (loop--) {
				lcd_p = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWER);
				lcd_s = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWERSTAT);
				lcd_seq = ite8181_ema_read_1(sc,
				    ITE8181_EMA_LCDPOWERSEQ);
				DPRINTFN(1,("ite8181_lcd_power(%d)%d| p=%x,"
				    " s=%x, seq=%x\n", on, loop, lcd_p, lcd_s,
				    lcd_seq));
				/*
				 * XXX the states which are not described
				 * XXX in manual.
				 */
				if ((lcd_s&ITE8181_LCDPSTANDBY) &&
				    !(lcd_s&ITE8181_LCDPDOWN) &&
				    !(lcd_s&ITE8181_LCDPON))
					break;
				delay(100);
			}
			lcd_s &= ~ITE8181_PPTOBEON;
			ite8181_ema_write_1(sc, ITE8181_EMA_LCDPOWERSTAT,
			    lcd_s);
		}
		DPRINTFN(1,("ite8181_lcd_power(%d)> p=%x, s=%x, seq=%x\n",
		    on,
		    ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWER),
		    ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWERSTAT),
		    ite8181_ema_read_1(sc, ITE8181_EMA_LCDPOWERSEQ)));
		ite8181_ema_write_1(sc, ITE8181_EMA_ENABLEEMA,
		    ITE8181_EMA_DISABLEPASS);
	}
	return 0;
}

static void
ite8181_erase_cursor(struct ite8181_softc *sc)
{
	ite8181_gui_write_1(sc, ITE8181_GUI_C1C, 0); /* Cursor 1 Control Reg. */
	/* other ? */
}

static void
ite8181_update_powerstate(struct ite8181_softc *sc, int updates)
{
	if (updates & PWRSTAT_LCD)
		config_hook_call(CONFIG_HOOK_POWERCONTROL,
		    CONFIG_HOOK_POWERCONTROL_LCD,
		    (void*)!(sc->sc_powerstate &
			(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)));

	if (updates & PWRSTAT_BACKLIGHT)
		config_hook_call(CONFIG_HOOK_POWERCONTROL,
		    CONFIG_HOOK_POWERCONTROL_LCDLIGHT,
		    (void*)(!(sc->sc_powerstate &
			(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)) &&
			(sc->sc_powerstate & PWRSTAT_BACKLIGHT)));
}

static void
ite8181_power(int why, void *arg)
{
        struct ite8181_softc *sc = arg;

	switch (why) {
	case PWR_STANDBY:
		sc->sc_powerstate |= PWRSTAT_SUSPEND;
		ite8181_update_powerstate(sc, PWRSTAT_ALL);
		break;
	case PWR_SUSPEND:
		sc->sc_powerstate |= PWRSTAT_SUSPEND;
		ite8181_update_powerstate(sc, PWRSTAT_ALL);
		break;
	case PWR_RESUME:
		sc->sc_powerstate &= ~PWRSTAT_SUSPEND;
		ite8181_update_powerstate(sc, PWRSTAT_ALL);
		break;
	}
}

static int
ite8181_hardpower(void *ctx, int type, long id, void *msg)
{
	struct ite8181_softc *sc = ctx;
	int why = (int)msg;

	switch (why) {
	case PWR_STANDBY:
		/* ite8181_lcd_power(sc, 0); */
		delay(MSEC);
		break;
	case PWR_SUSPEND:
		ite8181_lcd_power(sc, 0);
		delay(MSEC);
		break;
	case PWR_RESUME:
		delay(MSEC);
		ite8181_lcd_power(sc, 1);
		/*
		 * XXX:
		 * IBM WorkPad z50 power unit has too weak power.
		 * So we must wait too many times to access other devices
		 * after LCD panel and BackLight on.
		 */
		delay(ite8181_lcd_on_delay*MSEC);
		break;
	}

	/*
	 * you should wait until the
	 * power state transit sequence will end.
	 */

	return (0);
}

static int
ite8181_fbinit(struct hpcfb_fbconf *fb)
{

	/*
	 * get fb settings from bootinfo
	 */
	if (bootinfo == NULL ||
	    bootinfo->fb_addr == 0 ||
	    bootinfo->fb_line_bytes == 0 ||
	    bootinfo->fb_width == 0 ||
	    bootinfo->fb_height == 0) {
		printf("no frame buffer information.\n");
		return (-1);
	}

	/* zero fill */
	memset(fb, 0, sizeof(*fb));

	fb->hf_conf_index	= 0;	/* configuration index		*/
	fb->hf_nconfs		= 1;   	/* how many configurations	*/
	strcpy(fb->hf_name, "built-in video");
					/* frame buffer name		*/
	strcpy(fb->hf_conf_name, "default");
					/* configuration name		*/
	fb->hf_height		= bootinfo->fb_height;
	fb->hf_width		= bootinfo->fb_width;
	fb->hf_baseaddr		= (u_long)bootinfo->fb_addr;
	fb->hf_offset		= (u_long)bootinfo->fb_addr -
	    mips_ptob(mips_btop(bootinfo->fb_addr));
					/* frame buffer start offset   	*/
	fb->hf_bytes_per_line	= bootinfo->fb_line_bytes;
	fb->hf_nplanes		= 1;
	fb->hf_bytes_per_plane	= bootinfo->fb_height *
	    bootinfo->fb_line_bytes;

	fb->hf_access_flags |= HPCFB_ACCESS_BYTE;
	fb->hf_access_flags |= HPCFB_ACCESS_WORD;
	fb->hf_access_flags |= HPCFB_ACCESS_DWORD;

	switch (bootinfo->fb_type) {
		/*
		 * gray scale
		 */
	case BIFB_D2_M2L_3:
	case BIFB_D2_M2L_3x2:
		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
		/* fall through */
	case BIFB_D2_M2L_0:
	case BIFB_D2_M2L_0x2:
		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
		fb->hf_pack_width = 8;
		fb->hf_pixels_per_pack = 4;
		fb->hf_pixel_width = 2;
		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
		break;

	case BIFB_D4_M2L_F:
	case BIFB_D4_M2L_Fx2:
		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
		/* fall through */
	case BIFB_D4_M2L_0:
	case BIFB_D4_M2L_0x2:
		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
		fb->hf_pack_width = 8;
		fb->hf_pixels_per_pack = 2;
		fb->hf_pixel_width = 4;
		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
		break;

		/*
		 * indexed color
		 */
	case BIFB_D8_FF:
		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
		/* fall through */
	case BIFB_D8_00:
		fb->hf_class = HPCFB_CLASS_INDEXCOLOR;
		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
		fb->hf_pack_width = 8;
		fb->hf_pixels_per_pack = 1;
		fb->hf_pixel_width = 8;
		fb->hf_class_data_length = sizeof(struct hf_indexed_tag);
		fb->hf_u.hf_indexed.hf_flags = 0; /* reserved for future use */
		break;

		/*
		 * RGB color
		 */
	case BIFB_D16_FFFF:
		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
		/* fall through */
	case BIFB_D16_0000:
		fb->hf_class = HPCFB_CLASS_RGBCOLOR;
		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
		fb->hf_order_flags = HPCFB_REVORDER_BYTE;
		fb->hf_pack_width = 16;
		fb->hf_pixels_per_pack = 1;
		fb->hf_pixel_width = 16;

		fb->hf_class_data_length = sizeof(struct hf_rgb_tag);
		fb->hf_u.hf_rgb.hf_flags = 0;	/* reserved for future use */

		fb->hf_u.hf_rgb.hf_red_width = 5;
		fb->hf_u.hf_rgb.hf_red_shift = 11;
		fb->hf_u.hf_rgb.hf_green_width = 6;
		fb->hf_u.hf_rgb.hf_green_shift = 5;
		fb->hf_u.hf_rgb.hf_blue_width = 5;
		fb->hf_u.hf_rgb.hf_blue_shift = 0;
		fb->hf_u.hf_rgb.hf_alpha_width = 0;
		fb->hf_u.hf_rgb.hf_alpha_shift = 0;
		break;

	default:
		printf("unknown type (=%d).\n", bootinfo->fb_type);
		return (-1);
		break;
	}

	return (0); /* no error */
}

int
ite8181_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
{
	struct ite8181_softc *sc = (struct ite8181_softc *)v;
	struct hpcfb_fbconf *fbconf;
	struct hpcfb_dspconf *dspconf;
	struct wsdisplay_cmap *cmap;
	struct wsdisplay_param *dispparam;
	int error;

	switch (cmd) {
	case WSDISPLAYIO_GETCMAP:
		cmap = (struct wsdisplay_cmap *)data;

		if (sc->sc_fbconf.hf_class != HPCFB_CLASS_INDEXCOLOR ||
		    sc->sc_fbconf.hf_pack_width != 8 ||
		    256 <= cmap->index ||
		    256 - cmap->index < cmap->count)
			return (EINVAL);

#ifdef ITE8181_WINCE_CMAP
		error = copyout(&bivideo_cmap_r[cmap->index], cmap->red,
				cmap->count);
		if (error)
			return error;
		error = copyout(&bivideo_cmap_g[cmap->index], cmap->green,
				cmap->count);
		if (error)
			return error;
		error = copyout(&bivideo_cmap_b[cmap->index], cmap->blue,
				cmap->count);
		return error;
#else /* ITE8181_WINCE_CMAP */
		return EINVAL;
#endif /* ITE8181_WINCE_CMAP */

	case WSDISPLAYIO_PUTCMAP:
		/*
		 * This driver can't set color map.
		 */
		return (EINVAL);

	case WSDISPLAYIO_SVIDEO:
		if (*(int *)data == WSDISPLAYIO_VIDEO_OFF)
			sc->sc_powerstate |= PWRSTAT_VIDEOOFF;
		else
			sc->sc_powerstate &= ~PWRSTAT_VIDEOOFF;
		ite8181_update_powerstate(sc, PWRSTAT_ALL);
		return 0;

	case WSDISPLAYIO_GVIDEO:
		*(int *)data = (sc->sc_powerstate&PWRSTAT_VIDEOOFF) ?
		    WSDISPLAYIO_VIDEO_OFF:WSDISPLAYIO_VIDEO_ON;
		return 0;


	case WSDISPLAYIO_GETPARAM:
		dispparam = (struct wsdisplay_param*)data;
		switch (dispparam->param) {
		case WSDISPLAYIO_PARAM_BACKLIGHT:
			VPRINTF(("ite8181_ioctl: GET:BACKLIGHT\n"));
			ite8181_init_brightness(sc, 0);
			ite8181_init_backlight(sc, 0);
			VPRINTF(("ite8181_ioctl: GET:(real)BACKLIGHT %d\n",
			    (sc->sc_powerstate&PWRSTAT_BACKLIGHT)? 1: 0));
			dispparam->min = 0;
			dispparam->max = 1;
			if (sc->sc_max_brightness > 0)
				dispparam->curval =
				    sc->sc_brightness > 0 ? 1: 0;
			else
				dispparam->curval =
				    (sc->sc_powerstate & PWRSTAT_BACKLIGHT)
				    ? 1: 0;
			VPRINTF(("ite8181_ioctl: GET:BACKLIGHT:%d(%s)\n",
			    dispparam->curval,
			    sc->sc_max_brightness > 0? "brightness": "light"));
			return 0;
			break;
		case WSDISPLAYIO_PARAM_CONTRAST:
			VPRINTF(("ite8181_ioctl: GET:CONTRAST\n"));
			ite8181_init_contrast(sc, 0);
			if (sc->sc_max_contrast > 0) {
				dispparam->min = 0;
				dispparam->max = sc->sc_max_contrast;
				dispparam->curval = sc->sc_contrast;
				VPRINTF(("ite8181_ioctl: GET:CONTRAST max=%d,"
				    " current=%d\n", sc->sc_max_contrast,
				    sc->sc_contrast));
				return 0;
			} else {
				VPRINTF(("ite8181_ioctl: "
				    "GET:CONTRAST EINVAL\n"));
				return (EINVAL);
			}
			break;
		case WSDISPLAYIO_PARAM_BRIGHTNESS:
			VPRINTF(("ite8181_ioctl: GET:BRIGHTNESS\n"));
			ite8181_init_brightness(sc, 0);
			if (sc->sc_max_brightness > 0) {
				dispparam->min = 0;
				dispparam->max = sc->sc_max_brightness;
				dispparam->curval = sc->sc_brightness;
				VPRINTF(("ite8181_ioctl: GET:BRIGHTNESS"
				    " max=%d, current=%d\n",
				    sc->sc_max_brightness, sc->sc_brightness));
				return 0;
			} else {
				VPRINTF(("ite8181_ioctl: GET:BRIGHTNESS"
				    " EINVAL\n"));
				return (EINVAL);
			}
			return (EINVAL);
		default:
			return (EINVAL);
		}
		return (0);

	case WSDISPLAYIO_SETPARAM:
		dispparam = (struct wsdisplay_param*)data;
		switch (dispparam->param) {
		case WSDISPLAYIO_PARAM_BACKLIGHT:
			VPRINTF(("ite8181_ioctl: SET:BACKLIGHT\n"));
			if (dispparam->curval < 0 ||
			    1 < dispparam->curval)
				return (EINVAL);
			ite8181_init_brightness(sc, 0);
			VPRINTF(("ite8181_ioctl: SET:max brightness=%d\n",
			    sc->sc_max_brightness));
			if (sc->sc_max_brightness > 0) { /* dimmer */
				if (dispparam->curval == 0){
					sc->sc_brightness_save =
					    sc->sc_brightness;
					ite8181_set_brightness(sc, 0);/* min */
				} else {
					if (sc->sc_brightness_save == 0)
						sc->sc_brightness_save =
						    sc->sc_max_brightness;
					ite8181_set_brightness(sc,
					    sc->sc_brightness_save);
				}
				VPRINTF(("ite8181_ioctl: SET:BACKLIGHT:"
				    "brightness=%d\n", sc->sc_brightness));
			} else { /* off */
				if (dispparam->curval == 0)
					sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
				else
					sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
				VPRINTF(("ite8181_ioctl: SET:BACKLIGHT:"
				    "powerstate %d\n",
				    (sc->sc_powerstate & PWRSTAT_BACKLIGHT)
				    ? 1 : 0));
				ite8181_update_powerstate(sc,
				    PWRSTAT_BACKLIGHT);
				VPRINTF(("ite8181_ioctl: SET:BACKLIGHT:%d\n",
				    (sc->sc_powerstate & PWRSTAT_BACKLIGHT)
				    ? 1 : 0));
			}
			return 0;
			break;
		case WSDISPLAYIO_PARAM_CONTRAST:
			VPRINTF(("ite8181_ioctl: SET:CONTRAST\n"));
			ite8181_init_contrast(sc, 0);
			if (dispparam->curval < 0 ||
			    sc->sc_max_contrast < dispparam->curval)
				return (EINVAL);
			if (sc->sc_max_contrast > 0) {
				int org = sc->sc_contrast;
				ite8181_set_contrast(sc, dispparam->curval);
				VPRINTF(("ite8181_ioctl: SET:CONTRAST"
				    " org=%d, current=%d\n", org,
				    sc->sc_contrast));
				return 0;
			} else {
				VPRINTF(("ite8181_ioctl: SET:CONTRAST"
				    " EINVAL\n"));
				return (EINVAL);
			}
			break;
		case WSDISPLAYIO_PARAM_BRIGHTNESS:
			VPRINTF(("ite8181_ioctl: SET:BRIGHTNESS\n"));
			ite8181_init_brightness(sc, 0);
			if (dispparam->curval < 0 ||
			    sc->sc_max_brightness < dispparam->curval)
				return (EINVAL);
			if (sc->sc_max_brightness > 0) {
				int org = sc->sc_brightness;
				ite8181_set_brightness(sc, dispparam->curval);
				VPRINTF(("ite8181_ioctl: SET:BRIGHTNESS"
				    " org=%d, current=%d\n", org,
				    sc->sc_brightness));
				return 0;
			} else {
				VPRINTF(("ite8181_ioctl: SET:BRIGHTNESS"
				    " EINVAL\n"));
				return (EINVAL);
			}
			break;
		default:
			return (EINVAL);
		}
		return (0);

	case HPCFBIO_GCONF:
		fbconf = (struct hpcfb_fbconf *)data;
		if (fbconf->hf_conf_index != 0 &&
		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
			return (EINVAL);
		}
		*fbconf = sc->sc_fbconf;	/* structure assignment */
		return (0);
	case HPCFBIO_SCONF:
		fbconf = (struct hpcfb_fbconf *)data;
		if (fbconf->hf_conf_index != 0 &&
		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
			return (EINVAL);
		}
		/*
		 * nothing to do because we have only one configuration
		 */
		return (0);
	case HPCFBIO_GDSPCONF:
		dspconf = (struct hpcfb_dspconf *)data;
		if ((dspconf->hd_unit_index != 0 &&
		    dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
		    (dspconf->hd_conf_index != 0 &&
			dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
			return (EINVAL);
		}
		*dspconf = sc->sc_dspconf;	/* structure assignment */
		return (0);
	case HPCFBIO_SDSPCONF:
		dspconf = (struct hpcfb_dspconf *)data;
		if ((dspconf->hd_unit_index != 0 &&
		    dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
		    (dspconf->hd_conf_index != 0 &&
			dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
			return (EINVAL);
		}
		/*
		 * nothing to do
		 * because we have only one unit and one configuration
		 */
		return (0);
	case HPCFBIO_GOP:
	case HPCFBIO_SOP:
		/*
		 * currently not implemented...
		 */
		return (EINVAL);
	}

	return (EPASSTHROUGH);
}

paddr_t
ite8181_mmap(void *ctx, off_t offset, int prot)
{
	struct ite8181_softc *sc = (struct ite8181_softc *)ctx;

	if (offset < 0 ||
	    (sc->sc_fbconf.hf_bytes_per_plane +
		sc->sc_fbconf.hf_offset) <  offset)
		return -1;

	return mips_btop((u_long)bootinfo->fb_addr + offset);
}


void
ite8181_init_backlight(struct ite8181_softc *sc, int inattach)
{
	int val = -1;

	if (sc->sc_lcd_inited&BACKLIGHT_INITED)
		return;

	if (config_hook_call(CONFIG_HOOK_GET,
	    CONFIG_HOOK_POWER_LCDLIGHT, &val) != -1) {
		/* we can get real light state */
		VPRINTF(("ite8181_init_backlight: real backlight=%d\n", val));
		if (val == 0)
			sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
		else
			sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
		sc->sc_lcd_inited |= BACKLIGHT_INITED;
	} else if (inattach) {
		/*
		   we cannot get real light state in attach time
		   because light device not yet attached.
		   we will retry in !inattach.
		   temporary assume light is on.
		*/
		sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
	} else {
		/* we cannot get real light state, so work by myself state */
		sc->sc_lcd_inited |= BACKLIGHT_INITED;
	}
}

void
ite8181_init_brightness(struct ite8181_softc *sc, int inattach)
{
	int val = -1;

	if (sc->sc_lcd_inited&BRIGHTNESS_INITED)
		return;

	VPRINTF(("ite8181_init_brightness\n"));
	if (config_hook_call(CONFIG_HOOK_GET,
	    CONFIG_HOOK_BRIGHTNESS_MAX, &val) != -1) {
		/* we can get real brightness max */
		VPRINTF(("ite8181_init_brightness: real brightness max=%d\n",
		    val));
		sc->sc_max_brightness = val;
		val = -1;
		if (config_hook_call(CONFIG_HOOK_GET,
		    CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
			/* we can get real brightness */
			VPRINTF(("ite8181_init_brightness:"
			    " real brightness=%d\n", val));
			sc->sc_brightness_save = sc->sc_brightness = val;
		} else {
			sc->sc_brightness_save =
			    sc->sc_brightness = sc->sc_max_brightness;
		}
		sc->sc_lcd_inited |= BRIGHTNESS_INITED;
	} else if (inattach) {
		/*
		   we cannot get real brightness in attach time
		   because brightness device not yet attached.
		   we will retry in !inattach.
		*/
		sc->sc_max_brightness = -1;
		sc->sc_brightness = -1;
		sc->sc_brightness_save = -1;
	} else {
		/* we cannot get real brightness */
		sc->sc_lcd_inited |= BRIGHTNESS_INITED;
	}

	return;
}

void
ite8181_init_contrast(struct ite8181_softc *sc, int inattach)
{
	int val = -1;

	if (sc->sc_lcd_inited&CONTRAST_INITED)
		return;

	VPRINTF(("ite8181_init_contrast\n"));
	if (config_hook_call(CONFIG_HOOK_GET,
	    CONFIG_HOOK_CONTRAST_MAX, &val) != -1) {
		/* we can get real contrast max */
		VPRINTF(("ite8181_init_contrast: real contrast max=%d\n", val));
		sc->sc_max_contrast = val;
		val = -1;
		if (config_hook_call(CONFIG_HOOK_GET,
		    CONFIG_HOOK_CONTRAST, &val) != -1) {
			/* we can get real contrast */
			VPRINTF(("ite8181_init_contrast: real contrast=%d\n",
			    val));
			sc->sc_contrast = val;
		} else {
			sc->sc_contrast = sc->sc_max_contrast;
		}
		sc->sc_lcd_inited |= CONTRAST_INITED;
	} else if (inattach) {
		/*
		   we cannot get real contrast in attach time
		   because contrast device not yet attached.
		   we will retry in !inattach.
		*/
		sc->sc_max_contrast = -1;
		sc->sc_contrast = -1;
	} else {
		/* we cannot get real contrast */
		sc->sc_lcd_inited |= CONTRAST_INITED;
	}

	return;
}


void
ite8181_set_brightness(struct ite8181_softc *sc, int val)
{

	sc->sc_brightness = val;

	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val);
	if (config_hook_call(CONFIG_HOOK_GET,
	    CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
		sc->sc_brightness = val;
	}
}

void
ite8181_set_contrast(struct ite8181_softc *sc, int val)
{

	sc->sc_contrast = val;

	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, &val);
	if (config_hook_call(CONFIG_HOOK_GET,
	    CONFIG_HOOK_CONTRAST, &val) != -1) {
		sc->sc_contrast = val;
	}
}