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mq200.c revision 1.18
      1 /*	$NetBSD: mq200.c,v 1.18 2001/09/16 05:32:18 uch Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000, 2001 TAKEMURA Shin
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. The name of the author may not be used to endorse or promote products
     16  *    derived from this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     28  * SUCH DAMAGE.
     29  *
     30  */
     31 
     32 #include <sys/param.h>
     33 #include <sys/kernel.h>
     34 #include <sys/device.h>
     35 #include <sys/systm.h>
     36 #include <sys/reboot.h>
     37 
     38 #include <uvm/uvm_extern.h>
     39 
     40 #include <dev/wscons/wsconsio.h>
     41 
     42 #include <machine/bootinfo.h>
     43 #include <machine/bus.h>
     44 #include <machine/autoconf.h>
     45 #include <machine/config_hook.h>
     46 #include <machine/platid.h>
     47 #include <machine/platid_mask.h>
     48 
     49 #include "opt_mq200.h"
     50 #include <hpcmips/dev/mq200reg.h>
     51 #include <hpcmips/dev/mq200var.h>
     52 #include <hpcmips/dev/mq200priv.h>
     53 
     54 #include "bivideo.h"
     55 #if NBIVIDEO > 0
     56 #include <dev/hpc/bivideovar.h>
     57 #endif
     58 
     59 /*
     60  * function prototypes
     61  */
     62 static void	mq200_power(int, void *);
     63 static int	mq200_hardpower(void *, int, long, void *);
     64 static int	mq200_fbinit(struct hpcfb_fbconf *);
     65 static int	mq200_ioctl(void *, u_long, caddr_t, int, struct proc *);
     66 static paddr_t	mq200_mmap(void *, off_t offset, int);
     67 static void	mq200_update_powerstate(struct mq200_softc *, int);
     68 void	mq200_init_backlight(struct mq200_softc *, int);
     69 void	mq200_init_brightness(struct mq200_softc *, int);
     70 void	mq200_init_contrast(struct mq200_softc *, int);
     71 void	mq200_set_brightness(struct mq200_softc *, int);
     72 void	mq200_set_contrast(struct mq200_softc *, int);
     73 
     74 /*
     75  * static variables
     76  */
     77 struct hpcfb_accessops mq200_ha = {
     78 	mq200_ioctl, mq200_mmap
     79 };
     80 
     81 #ifdef MQ200_DEBUG
     82 int mq200_debug = MQ200DEBUG_CONF;
     83 #endif
     84 
     85 int
     86 mq200_probe(bus_space_tag_t iot, bus_space_handle_t ioh)
     87 {
     88 	unsigned long regval;
     89 
     90 #if NBIVIDEO > 0
     91 	if (bivideo_dont_attach) /* some video driver already attached */
     92 		return (0);
     93 #endif /* NBIVIDEO > 0 */
     94 
     95 	regval = bus_space_read_4(iot, ioh, MQ200_PC00R);
     96 	VPRINTF("probe: vendor id=%04lx product id=%04lx\n",
     97 	    regval & 0xffff, (regval >> 16) & 0xffff);
     98 	if (regval != ((MQ200_PRODUCT_ID << 16) | MQ200_VENDOR_ID))
     99 		return (0);
    100 
    101 	return (1);
    102 }
    103 
    104 void
    105 mq200_attach(struct mq200_softc *sc)
    106 {
    107 	unsigned long regval;
    108 	struct hpcfb_attach_args ha;
    109 	int console = (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) ? 0 : 1;
    110 
    111 	printf(": ");
    112 	if (mq200_fbinit(&sc->sc_fbconf) != 0) {
    113 		/* just return so that hpcfb will not be attached */
    114 		return;
    115 	}
    116 
    117 	sc->sc_fbconf.hf_baseaddr = (u_long)bootinfo->fb_addr;
    118 	sc->sc_fbconf.hf_offset	= (u_long)sc->sc_fbconf.hf_baseaddr -
    119 	    MIPS_PHYS_TO_KSEG1(mips_ptob(mips_btop(sc->sc_baseaddr)));
    120 	DPRINTF("hf_baseaddr=%lx\n", sc->sc_fbconf.hf_baseaddr);
    121 	DPRINTF("hf_offset=%lx\n", sc->sc_fbconf.hf_offset);
    122 
    123 	regval = mq200_read(sc, MQ200_PC08R);
    124 	printf("MQ200 Rev.%02lx video controller", regval & 0xff);
    125 	if (console) {
    126 		printf(", console");
    127 	}
    128 	printf("\n");
    129         printf("%s: framebuffer address: 0x%08lx\n",
    130 	    sc->sc_dev.dv_xname, (u_long)bootinfo->fb_addr);
    131 
    132 	/*
    133 	 * setup registers
    134 	 */
    135 	sc->sc_flags = 0;
    136 	sc->sc_baseclock = 12288;	/* 12.288 MHz */
    137 #ifdef MQ200_DEBUG
    138 	if (bootverbose) {
    139 		/* dump current setting	*/
    140 		mq200_dump_all(sc);
    141 		mq200_dump_pll(sc);
    142 	}
    143 #endif
    144 	mq200_setup_regctx(sc);
    145 	mq200_mdsetup(sc);
    146 	if (sc->sc_md) {
    147 		if (sc->sc_md->md_flags & MQ200_MD_HAVEFP) {
    148 			sc->sc_flags |= MQ200_SC_GC2_ENABLE;	/* FP	*/
    149 		}
    150 #if MQ200_USECRT
    151 		if (sc->sc_md->md_flags & MQ200_MD_HAVECRT) {
    152 			int i;
    153 			sc->sc_flags |= MQ200_SC_GC1_ENABLE;	/* CRT	*/
    154 			for (i = 0; i < mq200_crt_nparams; i++) {
    155 				sc->sc_crt = &mq200_crt_params[i];
    156 				if (sc->sc_md->md_fp_width <=
    157 				    mq200_crt_params[i].width &&
    158 				    sc->sc_md->md_fp_height <=
    159 				    mq200_crt_params[i].height)
    160 					break;
    161 			}
    162 		}
    163 #endif
    164 		mq200_setup(sc);
    165 
    166 		if (sc->sc_flags & MQ200_SC_GC2_ENABLE)	/* FP	*/
    167 			mq200_win_enable(sc, MQ200_GC2, MQ200_GCC_16BPP_DIRECT,
    168 			    0x00080100,
    169 			    sc->sc_md->md_fp_width, sc->sc_md->md_fp_height,
    170 			    1280);
    171 		if (sc->sc_flags & MQ200_SC_GC1_ENABLE)	/* CRT	*/
    172 			mq200_win_enable(sc, MQ200_GC1, MQ200_GCC_16BPP_DIRECT,
    173 			    0x00080100,
    174 			    sc->sc_md->md_fp_width, sc->sc_md->md_fp_height,
    175 			    1280);
    176 	}
    177 #ifdef MQ200_DEBUG
    178 	if (sc->sc_md == NULL || bootverbose) {
    179 		mq200_dump_pll(sc);
    180 	}
    181 #endif
    182 
    183 	/* Add a power hook to power saving */
    184 	sc->sc_mq200pwstate = MQ200_POWERSTATE_D0;
    185 	sc->sc_powerhook = powerhook_establish(mq200_power, sc);
    186 	if (sc->sc_powerhook == NULL)
    187 		printf("%s: WARNING: unable to establish power hook\n",
    188 		    sc->sc_dev.dv_xname);
    189 
    190 	/* Add a hard power hook to power saving */
    191 	sc->sc_hardpowerhook = config_hook(CONFIG_HOOK_PMEVENT,
    192 	    CONFIG_HOOK_PMEVENT_HARDPOWER,
    193 	    CONFIG_HOOK_SHARE,
    194 	    mq200_hardpower, sc);
    195 	if (sc->sc_hardpowerhook == NULL)
    196 		printf("%s: WARNING: unable to establish hard power hook\n",
    197 		    sc->sc_dev.dv_xname);
    198 
    199 	/* initialize backlight brightness and lcd contrast */
    200 	sc->sc_lcd_inited = 0;
    201 	mq200_init_brightness(sc, 1);
    202 	mq200_init_contrast(sc, 1);
    203 	mq200_init_backlight(sc, 1);
    204 
    205 	if (console && hpcfb_cnattach(&sc->sc_fbconf) != 0) {
    206 		panic("mq200_attach: can't init fb console");
    207 	}
    208 
    209 	ha.ha_console = console;
    210 	ha.ha_accessops = &mq200_ha;
    211 	ha.ha_accessctx = sc;
    212 	ha.ha_curfbconf = 0;
    213 	ha.ha_nfbconf = 1;
    214 	ha.ha_fbconflist = &sc->sc_fbconf;
    215 	ha.ha_curdspconf = 0;
    216 	ha.ha_ndspconf = 1;
    217 	ha.ha_dspconflist = &sc->sc_dspconf;
    218 
    219 	config_found(&sc->sc_dev, &ha, hpcfbprint);
    220 
    221 #if NBIVIDEO > 0
    222 	/*
    223 	 * bivideo is no longer need
    224 	 */
    225 	bivideo_dont_attach = 1;
    226 #endif /* NBIVIDEO > 0 */
    227 }
    228 
    229 static void
    230 mq200_update_powerstate(struct mq200_softc *sc, int updates)
    231 {
    232 
    233 	if (updates & PWRSTAT_LCD)
    234 		config_hook_call(CONFIG_HOOK_POWERCONTROL,
    235 		    CONFIG_HOOK_POWERCONTROL_LCD,
    236 		    (void*)!(sc->sc_powerstate &
    237 			(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)));
    238 
    239 	if (updates & PWRSTAT_BACKLIGHT)
    240 		config_hook_call(CONFIG_HOOK_POWERCONTROL,
    241 		    CONFIG_HOOK_POWERCONTROL_LCDLIGHT,
    242 		    (void*)(!(sc->sc_powerstate &
    243 			(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)) &&
    244 			(sc->sc_powerstate & PWRSTAT_BACKLIGHT)));
    245 }
    246 
    247 static void
    248 mq200_power(int why, void *arg)
    249 {
    250 	struct mq200_softc *sc = arg;
    251 
    252 	switch (why) {
    253 	case PWR_SUSPEND:
    254 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    255 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    256 		break;
    257 	case PWR_STANDBY:
    258 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    259 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    260 		break;
    261 	case PWR_RESUME:
    262 		sc->sc_powerstate &= ~PWRSTAT_SUSPEND;
    263 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    264 		break;
    265 	}
    266 }
    267 
    268 static int
    269 mq200_hardpower(void *ctx, int type, long id, void *msg)
    270 {
    271 	struct mq200_softc *sc = ctx;
    272 	int why = (int)msg;
    273 
    274 	switch (why) {
    275 	case PWR_SUSPEND:
    276 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D2;
    277 		break;
    278 	case PWR_STANDBY:
    279 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D3;
    280 		break;
    281 	case PWR_RESUME:
    282 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D0;
    283 		break;
    284 	}
    285 
    286 	bus_space_write_4(sc->sc_iot, sc->sc_ioh,
    287 	    MQ200_PMCSR, sc->sc_mq200pwstate);
    288 
    289 	/*
    290 	 * you should wait until the
    291 	 * power state transit sequence will end.
    292 	 */
    293 	{
    294 		unsigned long tmp;
    295 		do {
    296 			tmp = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
    297 			    MQ200_PMCSR);
    298 		} while ((tmp & 0x3) != (sc->sc_mq200pwstate & 0x3));
    299 		delay(100000); /* XXX */
    300 	}
    301 
    302 	return (0);
    303 }
    304 
    305 
    306 static int
    307 mq200_fbinit(struct hpcfb_fbconf *fb)
    308 {
    309 
    310 	/*
    311 	 * get fb settings from bootinfo
    312 	 */
    313 	if (bootinfo == NULL ||
    314 	    bootinfo->fb_addr == 0 ||
    315 	    bootinfo->fb_line_bytes == 0 ||
    316 	    bootinfo->fb_width == 0 ||
    317 	    bootinfo->fb_height == 0) {
    318 		printf("no frame buffer information.\n");
    319 		return (-1);
    320 	}
    321 
    322 	/* zero fill */
    323 	bzero(fb, sizeof(*fb));
    324 
    325 	fb->hf_conf_index	= 0;	/* configuration index		*/
    326 	fb->hf_nconfs		= 1;   	/* how many configurations	*/
    327 	strcpy(fb->hf_name, "built-in video");
    328 					/* frame buffer name		*/
    329 	strcpy(fb->hf_conf_name, "default");
    330 					/* configuration name		*/
    331 	fb->hf_height		= bootinfo->fb_height;
    332 	fb->hf_width		= bootinfo->fb_width;
    333 	fb->hf_baseaddr		= mips_ptob(mips_btop(bootinfo->fb_addr));
    334 	fb->hf_offset		= (u_long)bootinfo->fb_addr - fb->hf_baseaddr;
    335 					/* frame buffer start offset   	*/
    336 	fb->hf_bytes_per_line	= bootinfo->fb_line_bytes;
    337 	fb->hf_nplanes		= 1;
    338 	fb->hf_bytes_per_plane	= bootinfo->fb_height *
    339 	    bootinfo->fb_line_bytes;
    340 
    341 	fb->hf_access_flags |= HPCFB_ACCESS_BYTE;
    342 	fb->hf_access_flags |= HPCFB_ACCESS_WORD;
    343 	fb->hf_access_flags |= HPCFB_ACCESS_DWORD;
    344 
    345 	switch (bootinfo->fb_type) {
    346 		/*
    347 		 * gray scale
    348 		 */
    349 	case BIFB_D2_M2L_3:
    350 	case BIFB_D2_M2L_3x2:
    351 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    352 		/* fall through */
    353 	case BIFB_D2_M2L_0:
    354 	case BIFB_D2_M2L_0x2:
    355 		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
    356 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    357 		fb->hf_pack_width = 8;
    358 		fb->hf_pixels_per_pack = 4;
    359 		fb->hf_pixel_width = 2;
    360 		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
    361 		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
    362 		break;
    363 
    364 	case BIFB_D4_M2L_F:
    365 	case BIFB_D4_M2L_Fx2:
    366 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    367 		/* fall through */
    368 	case BIFB_D4_M2L_0:
    369 	case BIFB_D4_M2L_0x2:
    370 		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
    371 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    372 		fb->hf_pack_width = 8;
    373 		fb->hf_pixels_per_pack = 2;
    374 		fb->hf_pixel_width = 4;
    375 		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
    376 		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
    377 		break;
    378 
    379 		/*
    380 		 * indexed color
    381 		 */
    382 	case BIFB_D8_FF:
    383 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    384 		/* fall through */
    385 	case BIFB_D8_00:
    386 		fb->hf_class = HPCFB_CLASS_INDEXCOLOR;
    387 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    388 		fb->hf_pack_width = 8;
    389 		fb->hf_pixels_per_pack = 1;
    390 		fb->hf_pixel_width = 8;
    391 		fb->hf_class_data_length = sizeof(struct hf_indexed_tag);
    392 		fb->hf_u.hf_indexed.hf_flags = 0; /* reserved for future use */
    393 		break;
    394 
    395 		/*
    396 		 * RGB color
    397 		 */
    398 	case BIFB_D16_FFFF:
    399 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    400 		/* fall through */
    401 	case BIFB_D16_0000:
    402 		fb->hf_class = HPCFB_CLASS_RGBCOLOR;
    403 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    404 		fb->hf_order_flags = HPCFB_REVORDER_BYTE;
    405 		fb->hf_pack_width = 16;
    406 		fb->hf_pixels_per_pack = 1;
    407 		fb->hf_pixel_width = 16;
    408 
    409 		fb->hf_class_data_length = sizeof(struct hf_rgb_tag);
    410 		fb->hf_u.hf_rgb.hf_flags = 0;	/* reserved for future use */
    411 
    412 		fb->hf_u.hf_rgb.hf_red_width = 5;
    413 		fb->hf_u.hf_rgb.hf_red_shift = 11;
    414 		fb->hf_u.hf_rgb.hf_green_width = 6;
    415 		fb->hf_u.hf_rgb.hf_green_shift = 5;
    416 		fb->hf_u.hf_rgb.hf_blue_width = 5;
    417 		fb->hf_u.hf_rgb.hf_blue_shift = 0;
    418 		fb->hf_u.hf_rgb.hf_alpha_width = 0;
    419 		fb->hf_u.hf_rgb.hf_alpha_shift = 0;
    420 		break;
    421 
    422 	default:
    423 		printf("unknown type (=%d).\n", bootinfo->fb_type);
    424 		return (-1);
    425 		break;
    426 	}
    427 
    428 	return (0); /* no error */
    429 }
    430 
    431 int
    432 mq200_ioctl(v, cmd, data, flag, p)
    433 	void *v;
    434 	u_long cmd;
    435 	caddr_t data;
    436 	int flag;
    437 	struct proc *p;
    438 {
    439 	struct mq200_softc *sc = (struct mq200_softc *)v;
    440 	struct hpcfb_fbconf *fbconf;
    441 	struct hpcfb_dspconf *dspconf;
    442 	struct wsdisplay_cmap *cmap;
    443 	struct wsdisplay_param *dispparam;
    444 
    445 	switch (cmd) {
    446 	case WSDISPLAYIO_GETCMAP:
    447 		cmap = (struct wsdisplay_cmap*)data;
    448 
    449 		if (sc->sc_fbconf.hf_class != HPCFB_CLASS_INDEXCOLOR ||
    450 		    sc->sc_fbconf.hf_pack_width != 8 ||
    451 		    256 <= cmap->index ||
    452 		    256 < (cmap->index + cmap->count))
    453 			return (EINVAL);
    454 
    455 #if 0
    456 		if (!uvm_useracc(cmap->red, cmap->count, B_WRITE) ||
    457 		    !uvm_useracc(cmap->green, cmap->count, B_WRITE) ||
    458 		    !uvm_useracc(cmap->blue, cmap->count, B_WRITE))
    459 			return (EFAULT);
    460 
    461 		copyout(&bivideo_cmap_r[cmap->index], cmap->red, cmap->count);
    462 		copyout(&bivideo_cmap_g[cmap->index], cmap->green,cmap->count);
    463 		copyout(&bivideo_cmap_b[cmap->index], cmap->blue, cmap->count);
    464 #endif
    465 
    466 		return (0);
    467 
    468 	case WSDISPLAYIO_PUTCMAP:
    469 		/*
    470 		 * This driver can't set color map.
    471 		 */
    472 		return (EINVAL);
    473 
    474 	case WSDISPLAYIO_SVIDEO:
    475 		if (*(int *)data == WSDISPLAYIO_VIDEO_OFF)
    476 			sc->sc_powerstate |= PWRSTAT_VIDEOOFF;
    477 		else
    478 			sc->sc_powerstate &= ~PWRSTAT_VIDEOOFF;
    479 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    480 		return 0;
    481 
    482 	case WSDISPLAYIO_GVIDEO:
    483 		*(int *)data = (sc->sc_powerstate&PWRSTAT_VIDEOOFF) ?
    484 		    WSDISPLAYIO_VIDEO_OFF:WSDISPLAYIO_VIDEO_ON;
    485 		return 0;
    486 
    487 	case WSDISPLAYIO_GETPARAM:
    488 		dispparam = (struct wsdisplay_param*)data;
    489 		switch (dispparam->param) {
    490 		case WSDISPLAYIO_PARAM_BACKLIGHT:
    491 			VPRINTF("ioctl: GET:BACKLIGHT\n");
    492 			mq200_init_brightness(sc, 0);
    493 			mq200_init_backlight(sc, 0);
    494 			VPRINTF("ioctl: GET:(real)BACKLIGHT %d\n",
    495 			    (sc->sc_powerstate&PWRSTAT_BACKLIGHT)? 1: 0);
    496 			dispparam->min = 0;
    497 			dispparam->max = 1;
    498 			if (sc->sc_max_brightness > 0)
    499 				dispparam->curval = sc->sc_brightness > 0
    500 				    ? 1: 0;
    501 			else
    502 				dispparam->curval =
    503 				    (sc->sc_powerstate&PWRSTAT_BACKLIGHT)
    504 				    ? 1: 0;
    505 			VPRINTF("ioctl: GET:BACKLIGHT:%d(%s)\n",
    506 			    dispparam->curval,
    507 			    sc->sc_max_brightness > 0? "brightness": "light");
    508 			return 0;
    509 			break;
    510 		case WSDISPLAYIO_PARAM_CONTRAST:
    511 			VPRINTF("ioctl: GET:CONTRAST\n");
    512 			mq200_init_contrast(sc, 0);
    513 			if (sc->sc_max_contrast > 0) {
    514 				dispparam->min = 0;
    515 				dispparam->max = sc->sc_max_contrast;
    516 				dispparam->curval = sc->sc_contrast;
    517 				VPRINTF("ioctl: GET:CONTRAST"
    518 				    " max=%d, current=%d\n",
    519 				    sc->sc_max_contrast, sc->sc_contrast);
    520 				return 0;
    521 			} else {
    522 				VPRINTF("ioctl: GET:CONTRAST EINVAL\n");
    523 				return (EINVAL);
    524 			}
    525 			break;
    526 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
    527 			VPRINTF("ioctl: GET:BRIGHTNESS\n");
    528 			mq200_init_brightness(sc, 0);
    529 			if (sc->sc_max_brightness > 0) {
    530 				dispparam->min = 0;
    531 				dispparam->max = sc->sc_max_brightness;
    532 				dispparam->curval = sc->sc_brightness;
    533 				VPRINTF("ioctl: GET:BRIGHTNESS"
    534 				    " max=%d, current=%d\n",
    535 				    sc->sc_max_brightness, sc->sc_brightness);
    536 				return 0;
    537 			} else {
    538 				VPRINTF("ioctl: GET:BRIGHTNESS EINVAL\n");
    539 				return (EINVAL);
    540 			}
    541 			return (EINVAL);
    542 		default:
    543 			return (EINVAL);
    544 		}
    545 		return (0);
    546 
    547 	case WSDISPLAYIO_SETPARAM:
    548 		dispparam = (struct wsdisplay_param*)data;
    549 		switch (dispparam->param) {
    550 		case WSDISPLAYIO_PARAM_BACKLIGHT:
    551 			VPRINTF("ioctl: SET:BACKLIGHT\n");
    552 			if (dispparam->curval < 0 ||
    553 			    1 < dispparam->curval)
    554 				return (EINVAL);
    555 			mq200_init_brightness(sc, 0);
    556 			VPRINTF("ioctl: SET:max brightness=%d\n",
    557 			    sc->sc_max_brightness);
    558 			if (sc->sc_max_brightness > 0) { /* dimmer */
    559 				if (dispparam->curval == 0){
    560 					sc->sc_brightness_save =
    561 					    sc->sc_brightness;
    562 					mq200_set_brightness(sc, 0); /* min */
    563 				} else {
    564 					if (sc->sc_brightness_save == 0)
    565 						sc->sc_brightness_save =
    566 						    sc->sc_max_brightness;
    567 					mq200_set_brightness(sc,
    568 					    sc->sc_brightness_save);
    569 				}
    570 				VPRINTF("ioctl: SET:BACKLIGHT:"
    571 				    " brightness=%d\n", sc->sc_brightness);
    572 			} else { /* off */
    573 				if (dispparam->curval == 0)
    574 					sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
    575 				else
    576 					sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
    577 				VPRINTF("ioctl: SET:BACKLIGHT:"
    578 				    " powerstate %d\n",
    579 				    (sc->sc_powerstate & PWRSTAT_BACKLIGHT)
    580 				    ? 1 : 0);
    581 				mq200_update_powerstate(sc, PWRSTAT_BACKLIGHT);
    582 				VPRINTF("ioctl: SET:BACKLIGHT:%d\n",
    583 				    (sc->sc_powerstate & PWRSTAT_BACKLIGHT)
    584 				    ? 1 : 0);
    585 			}
    586 			return 0;
    587 			break;
    588 		case WSDISPLAYIO_PARAM_CONTRAST:
    589 			VPRINTF("ioctl: SET:CONTRAST\n");
    590 			mq200_init_contrast(sc, 0);
    591 			if (dispparam->curval < 0 ||
    592 			    sc->sc_max_contrast < dispparam->curval)
    593 				return (EINVAL);
    594 			if (sc->sc_max_contrast > 0) {
    595 				int org = sc->sc_contrast;
    596 				mq200_set_contrast(sc, dispparam->curval);
    597 				VPRINTF("ioctl: SET:CONTRAST"
    598 				    " org=%d, current=%d\n", org,
    599 				    sc->sc_contrast);
    600 				VPRINTF("ioctl: SETPARAM:"
    601 				    " CONTRAST org=%d, current=%d\n", org,
    602 				    sc->sc_contrast);
    603 				return 0;
    604 			} else {
    605 				VPRINTF("ioctl: SET:CONTRAST EINVAL\n");
    606 				return (EINVAL);
    607 			}
    608 			break;
    609 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
    610 			VPRINTF("ioctl: SET:BRIGHTNESS\n");
    611 			mq200_init_brightness(sc, 0);
    612 			if (dispparam->curval < 0 ||
    613 			    sc->sc_max_brightness < dispparam->curval)
    614 				return (EINVAL);
    615 			if (sc->sc_max_brightness > 0) {
    616 				int org = sc->sc_brightness;
    617 				mq200_set_brightness(sc, dispparam->curval);
    618 				VPRINTF("ioctl: SET:BRIGHTNESS"
    619 				    " org=%d, current=%d\n", org,
    620 				    sc->sc_brightness);
    621 				return 0;
    622 			} else {
    623 				VPRINTF("ioctl: SET:BRIGHTNESS EINVAL\n");
    624 				return (EINVAL);
    625 			}
    626 			break;
    627 		default:
    628 			return (EINVAL);
    629 		}
    630 		return (0);
    631 
    632 	case HPCFBIO_GCONF:
    633 		fbconf = (struct hpcfb_fbconf *)data;
    634 		if (fbconf->hf_conf_index != 0 &&
    635 		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
    636 			return (EINVAL);
    637 		}
    638 		*fbconf = sc->sc_fbconf;	/* structure assignment */
    639 		return (0);
    640 	case HPCFBIO_SCONF:
    641 		fbconf = (struct hpcfb_fbconf *)data;
    642 		if (fbconf->hf_conf_index != 0 &&
    643 		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
    644 			return (EINVAL);
    645 		}
    646 		/*
    647 		 * nothing to do because we have only one configration
    648 		 */
    649 		return (0);
    650 	case HPCFBIO_GDSPCONF:
    651 		dspconf = (struct hpcfb_dspconf *)data;
    652 		if ((dspconf->hd_unit_index != 0 &&
    653 		    dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
    654 		    (dspconf->hd_conf_index != 0 &&
    655 			dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
    656 			return (EINVAL);
    657 		}
    658 		*dspconf = sc->sc_dspconf;	/* structure assignment */
    659 		return (0);
    660 	case HPCFBIO_SDSPCONF:
    661 		dspconf = (struct hpcfb_dspconf *)data;
    662 		if ((dspconf->hd_unit_index != 0 &&
    663 		    dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
    664 		    (dspconf->hd_conf_index != 0 &&
    665 			dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
    666 			return (EINVAL);
    667 		}
    668 		/*
    669 		 * nothing to do
    670 		 * because we have only one unit and one configration
    671 		 */
    672 		return (0);
    673 	case HPCFBIO_GOP:
    674 	case HPCFBIO_SOP:
    675 		/*
    676 		 * curently not implemented...
    677 		 */
    678 		return (EINVAL);
    679 	}
    680 
    681 	return (ENOTTY);
    682 }
    683 
    684 paddr_t
    685 mq200_mmap(void *ctx, off_t offset, int prot)
    686 {
    687 	struct mq200_softc *sc = (struct mq200_softc *)ctx;
    688 
    689 	if (offset < 0 || MQ200_MAPSIZE <= offset)
    690 		return -1;
    691 
    692 	return mips_btop(sc->sc_baseaddr + offset);
    693 }
    694 
    695 
    696 void
    697 mq200_init_backlight(struct mq200_softc *sc, int inattach)
    698 {
    699 	int val = -1;
    700 
    701 	if (sc->sc_lcd_inited&BACKLIGHT_INITED)
    702 		return;
    703 
    704 	if (config_hook_call(CONFIG_HOOK_GET,
    705 	    CONFIG_HOOK_POWER_LCDLIGHT, &val) != -1) {
    706 		/* we can get real light state */
    707 		VPRINTF("init_backlight: real backlight=%d\n", val);
    708 		if (val == 0)
    709 			sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
    710 		else
    711 			sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
    712 		sc->sc_lcd_inited |= BACKLIGHT_INITED;
    713 	} else if (inattach) {
    714 		/*
    715 		   we cannot get real light state in attach time
    716 		   because light device not yet attached.
    717 		   we will retry in !inattach.
    718 		   temporary assume light is on.
    719 		*/
    720 		sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
    721 	} else {
    722 		/* we cannot get real light state, so work by myself state */
    723 		sc->sc_lcd_inited |= BACKLIGHT_INITED;
    724 	}
    725 }
    726 
    727 void
    728 mq200_init_brightness(struct mq200_softc *sc, int inattach)
    729 {
    730 	int val = -1;
    731 
    732 	if (sc->sc_lcd_inited&BRIGHTNESS_INITED)
    733 		return;
    734 
    735 	VPRINTF("init_brightness\n");
    736 	if (config_hook_call(CONFIG_HOOK_GET,
    737 	    CONFIG_HOOK_BRIGHTNESS_MAX, &val) != -1) {
    738 		/* we can get real brightness max */
    739 		VPRINTF("init_brightness: real brightness max=%d\n", val);
    740 		sc->sc_max_brightness = val;
    741 		val = -1;
    742 		if (config_hook_call(CONFIG_HOOK_GET,
    743 		    CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
    744 			/* we can get real brightness */
    745 			VPRINTF("init_brightness: real brightness=%d\n", val);
    746 			sc->sc_brightness_save = sc->sc_brightness = val;
    747 		} else {
    748 			sc->sc_brightness_save =
    749 			    sc->sc_brightness = sc->sc_max_brightness;
    750 		}
    751 		sc->sc_lcd_inited |= BRIGHTNESS_INITED;
    752 	} else if (inattach) {
    753 		/*
    754 		   we cannot get real brightness in attach time
    755 		   because brightness device not yet attached.
    756 		   we will retry in !inattach.
    757 		*/
    758 		sc->sc_max_brightness = -1;
    759 		sc->sc_brightness = -1;
    760 		sc->sc_brightness_save = -1;
    761 	} else {
    762 		/* we cannot get real brightness */
    763 		sc->sc_lcd_inited |= BRIGHTNESS_INITED;
    764 	}
    765 
    766 	return;
    767 }
    768 
    769 
    770 void
    771 mq200_init_contrast(struct mq200_softc *sc, int inattach)
    772 {
    773 	int val = -1;
    774 
    775 	if (sc->sc_lcd_inited&CONTRAST_INITED)
    776 		return;
    777 
    778 	VPRINTF("init_contrast\n");
    779 	if (config_hook_call(CONFIG_HOOK_GET,
    780 	    CONFIG_HOOK_CONTRAST_MAX, &val) != -1) {
    781 		/* we can get real contrast max */
    782 		VPRINTF("init_contrast: real contrast max=%d\n", val);
    783 		sc->sc_max_contrast = val;
    784 		val = -1;
    785 		if (config_hook_call(CONFIG_HOOK_GET,
    786 		    CONFIG_HOOK_CONTRAST, &val) != -1) {
    787 			/* we can get real contrast */
    788 			VPRINTF("init_contrast: real contrast=%d\n", val);
    789 			sc->sc_contrast = val;
    790 		} else {
    791 			sc->sc_contrast = sc->sc_max_contrast;
    792 		}
    793 		sc->sc_lcd_inited |= CONTRAST_INITED;
    794 	} else if (inattach) {
    795 		/*
    796 		   we cannot get real contrast in attach time
    797 		   because contrast device not yet attached.
    798 		   we will retry in !inattach.
    799 		*/
    800 		sc->sc_max_contrast = -1;
    801 		sc->sc_contrast = -1;
    802 	} else {
    803 		/* we cannot get real contrast */
    804 		sc->sc_lcd_inited |= CONTRAST_INITED;
    805 	}
    806 
    807 	return;
    808 }
    809 
    810 
    811 void
    812 mq200_set_brightness(struct mq200_softc *sc, int val)
    813 {
    814 	sc->sc_brightness = val;
    815 
    816 	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val);
    817 	if (config_hook_call(CONFIG_HOOK_GET,
    818 	    CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
    819 		sc->sc_brightness = val;
    820 	}
    821 }
    822 
    823 void
    824 mq200_set_contrast(struct mq200_softc *sc, int val)
    825 {
    826 	sc->sc_contrast = val;
    827 
    828 	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, &val);
    829 	if (config_hook_call(CONFIG_HOOK_GET,
    830 	    CONFIG_HOOK_CONTRAST, &val) != -1) {
    831 		sc->sc_contrast = val;
    832 	}
    833 }
    834