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mq200.c revision 1.11
      1 /*	$NetBSD: mq200.c,v 1.11 2001/03/09 08:54:18 sato Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 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 <hpcmips/dev/mq200reg.h>
     50 #include <hpcmips/dev/mq200var.h>
     51 #include "bivideo.h"
     52 #if NBIVIDEO > 0
     53 #include <dev/hpc/bivideovar.h>
     54 #endif
     55 
     56 #define MQ200DEBUG
     57 #ifdef MQ200DEBUG
     58 #ifndef MQ200DEBUG_CONF
     59 #define MQ200DEBUG_CONF 0
     60 #endif
     61 int	mq200_debug = MQ200DEBUG_CONF;
     62 #define	DPRINTF(arg)     do { if (mq200_debug) printf arg; } while(0);
     63 #define	DPRINTFN(n, arg) do { if (mq200_debug > (n)) printf arg; } while (0);
     64 #define	VPRINTF(arg)     do { if (bootverbose || mq200_debug) printf arg; } while(0);
     65 #define	VPRINTFN(n, arg) do { if (bootverbose || mq200_debug > (n)) printf arg; } while (0);
     66 #else
     67 #define	DPRINTF(arg)     do { } while (0);
     68 #define DPRINTFN(n, arg) do { } while (0);
     69 #define	VPRINTF(arg)     do { if (bootverbose) printf arg; } while(0);
     70 #define	VPRINTFN(n, arg) do { if (bootverbose) printf arg; } while (0);
     71 #endif
     72 
     73 /*
     74  * function prototypes
     75  */
     76 static void	mq200_power __P((int, void *));
     77 static int	mq200_hardpower __P((void *, int, long, void *));
     78 static int	mq200_fbinit __P((struct hpcfb_fbconf *));
     79 static int	mq200_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
     80 static paddr_t	mq200_mmap __P((void *, off_t offset, int));
     81 static void	mq200_update_powerstate __P((struct mq200_softc *, int));
     82 void	mq200_get_backlight __P((struct mq200_softc *));
     83 void	mq200_init_brightness __P((struct mq200_softc *));
     84 void	mq200_init_contrast __P((struct mq200_softc *));
     85 void	mq200_set_brightness __P((struct mq200_softc *, int));
     86 void	mq200_set_contrast __P((struct mq200_softc *, int));
     87 
     88 /*
     89  * static variables
     90  */
     91 struct hpcfb_accessops mq200_ha = {
     92 	mq200_ioctl, mq200_mmap
     93 };
     94 
     95 int
     96 mq200_probe(iot, ioh)
     97 	bus_space_tag_t iot;
     98 	bus_space_handle_t ioh;
     99 {
    100 	unsigned long regval;
    101 
    102 #if NBIVIDEO > 0
    103 	if (bivideo_dont_attach) /* some video driver already attached */
    104 		return (0);
    105 #endif /* NBIVIDEO > 0 */
    106 
    107 	regval = bus_space_read_4(iot, ioh, MQ200_PC00R);
    108 	VPRINTF(("mq200 probe: vendor id=%04lx product id=%04lx\n",
    109 		 regval & 0xffff, (regval >> 16) & 0xffff));
    110 	if (regval != ((MQ200_PRODUCT_ID << 16) | MQ200_VENDOR_ID))
    111 		return (0);
    112 
    113 	return (1);
    114 }
    115 
    116 void
    117 mq200_attach(sc)
    118 	struct mq200_softc *sc;
    119 {
    120 	unsigned long regval;
    121 	struct hpcfb_attach_args ha;
    122 	int console = (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) ? 0 : 1;
    123 
    124 	printf(": ");
    125 	if (mq200_fbinit(&sc->sc_fbconf) != 0) {
    126 		/* just return so that hpcfb will not be attached */
    127 		return;
    128 	}
    129 
    130 	sc->sc_fbconf.hf_baseaddr = (u_long)bootinfo->fb_addr;
    131 	sc->sc_fbconf.hf_offset	= (u_long)sc->sc_fbconf.hf_baseaddr -
    132 	    MIPS_PHYS_TO_KSEG1(mips_ptob(mips_btop(sc->sc_baseaddr)));
    133 	DPRINTF(("hf_baseaddr=%lx\n", sc->sc_fbconf.hf_baseaddr));
    134 	DPRINTF(("hf_offset=%lx\n", sc->sc_fbconf.hf_offset));
    135 
    136 	regval = bus_space_read_4(sc->sc_iot, sc->sc_ioh, MQ200_PC08R);
    137 	printf("MQ200 Rev.%02lx video controller", regval & 0xff);
    138 	if (console) {
    139 		printf(", console");
    140 	}
    141 	printf("\n");
    142         printf("%s: framebuffer address: 0x%08lx\n",
    143 		sc->sc_dev.dv_xname, (u_long)bootinfo->fb_addr);
    144 
    145 	/* Add a power hook to power saving */
    146 	sc->sc_mq200pwstate = MQ200_POWERSTATE_D0;
    147 	sc->sc_powerhook = powerhook_establish(mq200_power, sc);
    148 	if (sc->sc_powerhook == NULL)
    149 		printf("%s: WARNING: unable to establish power hook\n",
    150 			sc->sc_dev.dv_xname);
    151 
    152 	/* Add a hard power hook to power saving */
    153 	sc->sc_hardpowerhook = config_hook(CONFIG_HOOK_PMEVENT,
    154 					   CONFIG_HOOK_PMEVENT_HARDPOWER,
    155 					   CONFIG_HOOK_SHARE,
    156 					   mq200_hardpower, sc);
    157 	if (sc->sc_hardpowerhook == NULL)
    158 		printf("%s: WARNING: unable to establish hard power hook\n",
    159 			sc->sc_dev.dv_xname);
    160 
    161 	/* initialize backlight brightness and lcd contrast */
    162 	sc->sc_brightness = sc->sc_contrast =
    163 	sc->sc_max_brightness = sc->sc_max_contrast = -1;
    164 	mq200_init_brightness(sc);
    165 	mq200_init_contrast(sc);
    166 	mq200_get_backlight(sc);
    167 
    168 	if (console && hpcfb_cnattach(&sc->sc_fbconf) != 0) {
    169 		panic("mq200_attach: can't init fb console");
    170 	}
    171 
    172 	ha.ha_console = console;
    173 	ha.ha_accessops = &mq200_ha;
    174 	ha.ha_accessctx = sc;
    175 	ha.ha_curfbconf = 0;
    176 	ha.ha_nfbconf = 1;
    177 	ha.ha_fbconflist = &sc->sc_fbconf;
    178 	ha.ha_curdspconf = 0;
    179 	ha.ha_ndspconf = 1;
    180 	ha.ha_dspconflist = &sc->sc_dspconf;
    181 
    182 	config_found(&sc->sc_dev, &ha, hpcfbprint);
    183 
    184 #if NBIVIDEO > 0
    185 	/*
    186 	 * bivideo is no longer need
    187 	 */
    188 	bivideo_dont_attach = 1;
    189 #endif /* NBIVIDEO > 0 */
    190 }
    191 
    192 static void
    193 mq200_update_powerstate(sc, updates)
    194 	struct mq200_softc *sc;
    195 	int updates;
    196 {
    197 	if (updates & PWRSTAT_LCD)
    198 		config_hook_call(CONFIG_HOOK_POWERCONTROL,
    199 		    CONFIG_HOOK_POWERCONTROL_LCD,
    200 		    (void*)!(sc->sc_powerstate &
    201 				(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)));
    202 
    203 	if (updates & PWRSTAT_BACKLIGHT)
    204 		config_hook_call(CONFIG_HOOK_POWERCONTROL,
    205 		    CONFIG_HOOK_POWERCONTROL_LCDLIGHT,
    206 		    (void*)(!(sc->sc_powerstate &
    207 				(PWRSTAT_VIDEOOFF|PWRSTAT_SUSPEND)) &&
    208 			     (sc->sc_powerstate & PWRSTAT_BACKLIGHT)));
    209 }
    210 
    211 static void
    212 mq200_power(why, arg)
    213 	int why;
    214 	void *arg;
    215 {
    216 #if 0
    217 	struct mq200_softc *sc = arg;
    218 
    219 	switch (why) {
    220 	case PWR_SUSPEND:
    221 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    222 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    223 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D2;
    224 		break;
    225 	case PWR_STANDBY:
    226 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    227 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    228 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D3;
    229 		break;
    230 	case PWR_RESUME:
    231 		sc->sc_powerstate &= ~PWRSTAT_SUSPEND;
    232 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    233 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D0;
    234 		break;
    235 	}
    236 
    237 	printf("MQ200_PMCSR=%08x\n", sc->sc_mq200pwstate);
    238 	bus_space_write_4(sc->sc_iot, sc->sc_ioh,
    239 			  MQ200_PMCSR, sc->sc_mq200pwstate);
    240 #endif
    241 }
    242 
    243 static int
    244 mq200_hardpower(ctx, type, id, msg)
    245 	void *ctx;
    246 	int type;
    247 	long id;
    248 	void *msg;
    249 {
    250 	struct mq200_softc *sc = ctx;
    251 	int why = (int)msg;
    252 
    253 	switch (why) {
    254 	case PWR_SUSPEND:
    255 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    256 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    257 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D2;
    258 		break;
    259 	case PWR_STANDBY:
    260 		sc->sc_powerstate |= PWRSTAT_SUSPEND;
    261 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    262 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D3;
    263 		break;
    264 	case PWR_RESUME:
    265 		sc->sc_powerstate &= ~PWRSTAT_SUSPEND;
    266 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    267 		sc->sc_mq200pwstate = MQ200_POWERSTATE_D0;
    268 		break;
    269 	}
    270 
    271 	bus_space_write_4(sc->sc_iot, sc->sc_ioh,
    272 			  MQ200_PMCSR, sc->sc_mq200pwstate);
    273 
    274 	/*
    275 	 * you should wait until the
    276 	 * power state transit sequence will end.
    277 	 */
    278 	{
    279 		unsigned long tmp;
    280 		do {
    281 			tmp = bus_space_read_4(sc->sc_iot, sc->sc_ioh,
    282 					       MQ200_PMCSR);
    283 		} while ((tmp & 0x3) != (sc->sc_mq200pwstate & 0x3));
    284 		delay(100000); /* XXX */
    285 	}
    286 
    287 	return (0);
    288 }
    289 
    290 
    291 static int
    292 mq200_fbinit(fb)
    293 	struct hpcfb_fbconf *fb;
    294 {
    295 
    296 	/*
    297 	 * get fb settings from bootinfo
    298 	 */
    299 	if (bootinfo == NULL ||
    300 	    bootinfo->fb_addr == 0 ||
    301 	    bootinfo->fb_line_bytes == 0 ||
    302 	    bootinfo->fb_width == 0 ||
    303 	    bootinfo->fb_height == 0) {
    304 		printf("no frame buffer infomation.\n");
    305 		return (-1);
    306 	}
    307 
    308 	/* zero fill */
    309 	bzero(fb, sizeof(*fb));
    310 
    311 	fb->hf_conf_index	= 0;	/* configuration index		*/
    312 	fb->hf_nconfs		= 1;   	/* how many configurations	*/
    313 	strcpy(fb->hf_name, "built-in video");
    314 					/* frame buffer name		*/
    315 	strcpy(fb->hf_conf_name, "default");
    316 					/* configuration name		*/
    317 	fb->hf_height		= bootinfo->fb_height;
    318 	fb->hf_width		= bootinfo->fb_width;
    319 	fb->hf_baseaddr		= mips_ptob(mips_btop(bootinfo->fb_addr));
    320 	fb->hf_offset		= (u_long)bootinfo->fb_addr - fb->hf_baseaddr;
    321 					/* frame buffer start offset   	*/
    322 	fb->hf_bytes_per_line	= bootinfo->fb_line_bytes;
    323 	fb->hf_nplanes		= 1;
    324 	fb->hf_bytes_per_plane	= bootinfo->fb_height *
    325 					bootinfo->fb_line_bytes;
    326 
    327 	fb->hf_access_flags |= HPCFB_ACCESS_BYTE;
    328 	fb->hf_access_flags |= HPCFB_ACCESS_WORD;
    329 	fb->hf_access_flags |= HPCFB_ACCESS_DWORD;
    330 
    331 	switch (bootinfo->fb_type) {
    332 		/*
    333 		 * gray scale
    334 		 */
    335 	case BIFB_D2_M2L_3:
    336 	case BIFB_D2_M2L_3x2:
    337 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    338 		/* fall through */
    339 	case BIFB_D2_M2L_0:
    340 	case BIFB_D2_M2L_0x2:
    341 		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
    342 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    343 		fb->hf_pack_width = 8;
    344 		fb->hf_pixels_per_pack = 4;
    345 		fb->hf_pixel_width = 2;
    346 		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
    347 		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
    348 		break;
    349 
    350 	case BIFB_D4_M2L_F:
    351 	case BIFB_D4_M2L_Fx2:
    352 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    353 		/* fall through */
    354 	case BIFB_D4_M2L_0:
    355 	case BIFB_D4_M2L_0x2:
    356 		fb->hf_class = HPCFB_CLASS_GRAYSCALE;
    357 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    358 		fb->hf_pack_width = 8;
    359 		fb->hf_pixels_per_pack = 2;
    360 		fb->hf_pixel_width = 4;
    361 		fb->hf_class_data_length = sizeof(struct hf_gray_tag);
    362 		fb->hf_u.hf_gray.hf_flags = 0;	/* reserved for future use */
    363 		break;
    364 
    365 		/*
    366 		 * indexed color
    367 		 */
    368 	case BIFB_D8_FF:
    369 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    370 		/* fall through */
    371 	case BIFB_D8_00:
    372 		fb->hf_class = HPCFB_CLASS_INDEXCOLOR;
    373 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    374 		fb->hf_pack_width = 8;
    375 		fb->hf_pixels_per_pack = 1;
    376 		fb->hf_pixel_width = 8;
    377 		fb->hf_class_data_length = sizeof(struct hf_indexed_tag);
    378 		fb->hf_u.hf_indexed.hf_flags = 0; /* reserved for future use */
    379 		break;
    380 
    381 		/*
    382 		 * RGB color
    383 		 */
    384 	case BIFB_D16_FFFF:
    385 		fb->hf_access_flags |= HPCFB_ACCESS_REVERSE;
    386 		/* fall through */
    387 	case BIFB_D16_0000:
    388 		fb->hf_class = HPCFB_CLASS_RGBCOLOR;
    389 		fb->hf_access_flags |= HPCFB_ACCESS_STATIC;
    390 #if BYTE_ORDER == LITTLE_ENDIAN
    391 		fb->hf_swap_flags = HPCFB_SWAP_BYTE;
    392 #endif
    393 		fb->hf_pack_width = 16;
    394 		fb->hf_pixels_per_pack = 1;
    395 		fb->hf_pixel_width = 16;
    396 
    397 		fb->hf_class_data_length = sizeof(struct hf_rgb_tag);
    398 		fb->hf_u.hf_rgb.hf_flags = 0;	/* reserved for future use */
    399 
    400 		fb->hf_u.hf_rgb.hf_red_width = 5;
    401 		fb->hf_u.hf_rgb.hf_red_shift = 11;
    402 		fb->hf_u.hf_rgb.hf_green_width = 6;
    403 		fb->hf_u.hf_rgb.hf_green_shift = 5;
    404 		fb->hf_u.hf_rgb.hf_blue_width = 5;
    405 		fb->hf_u.hf_rgb.hf_blue_shift = 0;
    406 		fb->hf_u.hf_rgb.hf_alpha_width = 0;
    407 		fb->hf_u.hf_rgb.hf_alpha_shift = 0;
    408 		break;
    409 
    410 	default:
    411 		printf("unknown type (=%d).\n", bootinfo->fb_type);
    412 		return (-1);
    413 		break;
    414 	}
    415 
    416 	return (0); /* no error */
    417 }
    418 
    419 int
    420 mq200_ioctl(v, cmd, data, flag, p)
    421 	void *v;
    422 	u_long cmd;
    423 	caddr_t data;
    424 	int flag;
    425 	struct proc *p;
    426 {
    427 	struct mq200_softc *sc = (struct mq200_softc *)v;
    428 	struct hpcfb_fbconf *fbconf;
    429 	struct hpcfb_dspconf *dspconf;
    430 	struct wsdisplay_cmap *cmap;
    431 	struct wsdisplay_param *dispparam;
    432 
    433 	switch (cmd) {
    434 	case WSDISPLAYIO_GETCMAP:
    435 		cmap = (struct wsdisplay_cmap*)data;
    436 
    437 		if (sc->sc_fbconf.hf_class != HPCFB_CLASS_INDEXCOLOR ||
    438 		    sc->sc_fbconf.hf_pack_width != 8 ||
    439 		    256 <= cmap->index ||
    440 		    256 < (cmap->index + cmap->count))
    441 			return (EINVAL);
    442 
    443 #if 0
    444 		if (!uvm_useracc(cmap->red, cmap->count, B_WRITE) ||
    445 		    !uvm_useracc(cmap->green, cmap->count, B_WRITE) ||
    446 		    !uvm_useracc(cmap->blue, cmap->count, B_WRITE))
    447 			return (EFAULT);
    448 
    449 		copyout(&bivideo_cmap_r[cmap->index], cmap->red, cmap->count);
    450 		copyout(&bivideo_cmap_g[cmap->index], cmap->green,cmap->count);
    451 		copyout(&bivideo_cmap_b[cmap->index], cmap->blue, cmap->count);
    452 #endif
    453 
    454 		return (0);
    455 
    456 	case WSDISPLAYIO_PUTCMAP:
    457 		/*
    458 		 * This driver can't set color map.
    459 		 */
    460 		return (EINVAL);
    461 
    462 	case WSDISPLAYIO_SVIDEO:
    463 		if (*(int *)data == WSDISPLAYIO_VIDEO_OFF)
    464 			sc->sc_powerstate |= PWRSTAT_VIDEOOFF;
    465 		else
    466 			sc->sc_powerstate &= ~PWRSTAT_VIDEOOFF;
    467 		mq200_update_powerstate(sc, PWRSTAT_ALL);
    468 		return 0;
    469 
    470 	case WSDISPLAYIO_GVIDEO:
    471 		*(int *)data = (sc->sc_powerstate&PWRSTAT_VIDEOOFF) ?
    472 				WSDISPLAYIO_VIDEO_OFF:WSDISPLAYIO_VIDEO_ON;
    473 		return 0;
    474 
    475 	case WSDISPLAYIO_GETPARAM:
    476 		dispparam = (struct wsdisplay_param*)data;
    477 		switch (dispparam->param) {
    478 		case WSDISPLAYIO_PARAM_BACKLIGHT:
    479 			VPRINTF(("mq200_ioctl: GETPARAM:BACKLIGHT call\n"));
    480 			if (sc->sc_max_brightness == -1)
    481 				mq200_init_brightness(sc);
    482 			mq200_get_backlight(sc);
    483 			dispparam->min = 0;
    484 			dispparam->max = 1;
    485 			if (sc->sc_max_brightness > 0)
    486 				dispparam->curval = sc->sc_brightness > 0? 1: 0;
    487 			else
    488 				dispparam->curval =
    489 				    (sc->sc_powerstate&PWRSTAT_BACKLIGHT) ? 1 : 0;
    490 			VPRINTF(("mq200_ioctl: GETPARAM:BACKLIGHT:%d\n",
    491 				dispparam->curval));
    492 			return 0;
    493 			break;
    494 		case WSDISPLAYIO_PARAM_CONTRAST:
    495 			VPRINTF(("mq200_ioctl: GETPARAM:CONTRAST call\n"));
    496 			if (sc->sc_max_contrast == -1)
    497 				mq200_init_contrast(sc);
    498 			if (sc->sc_max_contrast > 0) {
    499 				dispparam->min = 0;
    500 				dispparam->max = sc->sc_max_contrast;
    501 				dispparam->curval = sc->sc_contrast;
    502 				VPRINTF(("mq200_ioctl: GETPARAM:CONTRAST max=%d, current=%d\n", sc->sc_max_contrast, sc->sc_contrast));
    503 				return 0;
    504 			} else {
    505 				VPRINTF(("mq200_ioctl: GETPARAM:CONTRAST ret\n"));
    506 				return (EINVAL);
    507 			}
    508 			break;
    509 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
    510 			VPRINTF(("mq200_ioctl: GETPARAM:BRIGHTNESS call\n"));
    511 			if (sc->sc_max_brightness == -1)
    512 				mq200_init_brightness(sc);
    513 			if (sc->sc_max_brightness > 0) {
    514 				dispparam->min = 0;
    515 				dispparam->max = sc->sc_max_brightness;
    516 				dispparam->curval = sc->sc_brightness;
    517 				VPRINTF(("mq200_ioctl: GETPARAM:BRIGHTNESS max=%d, current=%d\n", sc->sc_max_brightness, sc->sc_brightness));
    518 				return 0;
    519 			} else {
    520 				VPRINTF(("mq200_ioctl: GETPARAM:BRIGHTNESS ret\n"));
    521 				return (EINVAL);
    522 			}
    523 			return (EINVAL);
    524 		default:
    525 			return (EINVAL);
    526 		}
    527 		return (0);
    528 
    529 	case WSDISPLAYIO_SETPARAM:
    530 		dispparam = (struct wsdisplay_param*)data;
    531 		switch (dispparam->param) {
    532 		case WSDISPLAYIO_PARAM_BACKLIGHT:
    533 			VPRINTF(("mq200_ioctl: SETPARAM:BACKLIGHT call\n"));
    534 			if (dispparam->curval < 0 ||
    535 			    1 < dispparam->curval)
    536 				return (EINVAL);
    537 			if (sc->sc_max_brightness == -1)
    538 				mq200_init_brightness(sc);
    539 			VPRINTF(("mq200_ioctl: SETPARAM:max brightness=%d\n", sc->sc_max_brightness));
    540 			if (sc->sc_max_brightness > 0) { /* dimmer */
    541 				if (dispparam->curval == 0){
    542 					sc->sc_brightness_save = sc->sc_brightness;
    543 					mq200_set_brightness(sc, 0);	/* min */
    544 				} else {
    545 					if (sc->sc_brightness_save == 0)
    546 						sc->sc_brightness_save = sc->sc_max_brightness;
    547 					mq200_set_brightness(sc, sc->sc_brightness_save);
    548 				}
    549 				VPRINTF(("mq200_ioctl: SETPARAM:BACKLIGHT: brightness=%d\n", sc->sc_brightness));
    550 			} else { /* off */
    551 				if (dispparam->curval == 0)
    552 					sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
    553 				else
    554 					sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
    555 				VPRINTF(("mq200_ioctl: SETPARAM:BACKLIGHT: powerstate %d\n",
    556 						(sc->sc_powerstate & PWRSTAT_BACKLIGHT)?1:0));
    557 				mq200_update_powerstate(sc, PWRSTAT_BACKLIGHT);
    558 				VPRINTF(("mq200_ioctl: SETPARAM:BACKLIGHT:%d\n",
    559 					(sc->sc_powerstate & PWRSTAT_BACKLIGHT)?1:0));
    560 			}
    561 			return 0;
    562 			break;
    563 		case WSDISPLAYIO_PARAM_CONTRAST:
    564 			VPRINTF(("mq200_ioctl: SETPARAM:CONTRAST call\n"));
    565 			if (sc->sc_max_contrast == -1)
    566 				mq200_init_contrast(sc);
    567 			if (dispparam->curval < 0 ||
    568 			    sc->sc_max_contrast < dispparam->curval)
    569 				return (EINVAL);
    570 			if (sc->sc_max_contrast > 0) {
    571 				int org = sc->sc_contrast;
    572 				mq200_set_contrast(sc, dispparam->curval);
    573 				VPRINTF(("mq200_ioctl: SETPARAM:CONTRAST org=%d, current=%d\n", org, sc->sc_contrast));
    574 				return 0;
    575 			} else {
    576 				VPRINTF(("mq200_ioctl: SETPARAM:CONTRAST ret\n"));
    577 				return (EINVAL);
    578 			}
    579 			break;
    580 		case WSDISPLAYIO_PARAM_BRIGHTNESS:
    581 			VPRINTF(("mq200_ioctl: SETPARAM:BRIGHTNESS call\n"));
    582 			if (sc->sc_max_brightness == -1)
    583 				mq200_init_brightness(sc);
    584 			if (dispparam->curval < 0 ||
    585 			    sc->sc_max_brightness < dispparam->curval)
    586 				return (EINVAL);
    587 			if (sc->sc_max_brightness > 0) {
    588 				int org = sc->sc_brightness;
    589 				mq200_set_brightness(sc, dispparam->curval);
    590 				VPRINTF(("mq200_ioctl: SETPARAM:BRIGHTNESS org=%d, current=%d\n", org, sc->sc_brightness));
    591 				return 0;
    592 			} else {
    593 				VPRINTF(("mq200_ioctl: SETPARAM:BRIGHTNESS ret\n"));
    594 				return (EINVAL);
    595 			}
    596 			break;
    597 		default:
    598 			return (EINVAL);
    599 		}
    600 		return (0);
    601 
    602 	case HPCFBIO_GCONF:
    603 		fbconf = (struct hpcfb_fbconf *)data;
    604 		if (fbconf->hf_conf_index != 0 &&
    605 		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
    606 			return (EINVAL);
    607 		}
    608 		*fbconf = sc->sc_fbconf;	/* structure assignment */
    609 		return (0);
    610 	case HPCFBIO_SCONF:
    611 		fbconf = (struct hpcfb_fbconf *)data;
    612 		if (fbconf->hf_conf_index != 0 &&
    613 		    fbconf->hf_conf_index != HPCFB_CURRENT_CONFIG) {
    614 			return (EINVAL);
    615 		}
    616 		/*
    617 		 * nothing to do because we have only one configration
    618 		 */
    619 		return (0);
    620 	case HPCFBIO_GDSPCONF:
    621 		dspconf = (struct hpcfb_dspconf *)data;
    622 		if ((dspconf->hd_unit_index != 0 &&
    623 		     dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
    624 		    (dspconf->hd_conf_index != 0 &&
    625 		     dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
    626 			return (EINVAL);
    627 		}
    628 		*dspconf = sc->sc_dspconf;	/* structure assignment */
    629 		return (0);
    630 	case HPCFBIO_SDSPCONF:
    631 		dspconf = (struct hpcfb_dspconf *)data;
    632 		if ((dspconf->hd_unit_index != 0 &&
    633 		     dspconf->hd_unit_index != HPCFB_CURRENT_UNIT) ||
    634 		    (dspconf->hd_conf_index != 0 &&
    635 		     dspconf->hd_conf_index != HPCFB_CURRENT_CONFIG)) {
    636 			return (EINVAL);
    637 		}
    638 		/*
    639 		 * nothing to do
    640 		 * because we have only one unit and one configration
    641 		 */
    642 		return (0);
    643 	case HPCFBIO_GOP:
    644 	case HPCFBIO_SOP:
    645 		/*
    646 		 * curently not implemented...
    647 		 */
    648 		return (EINVAL);
    649 	}
    650 
    651 	return (ENOTTY);
    652 }
    653 
    654 paddr_t
    655 mq200_mmap(ctx, offset, prot)
    656 	void *ctx;
    657 	off_t offset;
    658 	int prot;
    659 {
    660 	struct mq200_softc *sc = (struct mq200_softc *)ctx;
    661 
    662 	if (offset < 0 || MQ200_MAPSIZE <= offset)
    663 		return -1;
    664 
    665 	return mips_btop(sc->sc_baseaddr + offset);
    666 }
    667 
    668 
    669 void
    670 mq200_get_backlight(sc)
    671 	struct mq200_softc *sc;
    672 {
    673 	int val = -1;
    674 
    675 	if (sc->sc_max_brightness < 0) {
    676 		if (config_hook_call(CONFIG_HOOK_GET,
    677 		     CONFIG_HOOK_POWER_LCDLIGHT, &val) != -1) {
    678 			if (val == 0)
    679 				sc->sc_powerstate &= ~PWRSTAT_BACKLIGHT;
    680 			else
    681 				sc->sc_powerstate |= PWRSTAT_BACKLIGHT;
    682 		}
    683 	}
    684 }
    685 
    686 void
    687 mq200_init_brightness(sc)
    688 	struct mq200_softc *sc;
    689 {
    690 	int val = -1;
    691 
    692 	VPRINTF(("mq200_init_brightness\n"));
    693 	if (config_hook_call(CONFIG_HOOK_GET,
    694 	     CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
    695 		sc->sc_brightness_save = sc->sc_brightness = val;
    696 	}
    697 	val = -1;
    698 	if (config_hook_call(CONFIG_HOOK_GET,
    699 	     CONFIG_HOOK_BRIGHTNESS_MAX, &val) != -1) {
    700 		sc->sc_max_brightness = val;
    701 	}
    702 	return;
    703 }
    704 
    705 
    706 void
    707 mq200_init_contrast(sc)
    708 	struct mq200_softc *sc;
    709 {
    710 	int val = -1;
    711 
    712 	VPRINTF(("mq200_init_contrast\n"));
    713 	if (config_hook_call(CONFIG_HOOK_GET,
    714 	     CONFIG_HOOK_CONTRAST, &val) != -1) {
    715 		sc->sc_contrast = val;
    716 	}
    717 	val = -1;
    718 	if (config_hook_call(CONFIG_HOOK_GET,
    719 	     CONFIG_HOOK_CONTRAST_MAX, &val) != -1) {
    720 		sc->sc_max_contrast = val;
    721 	}
    722 	return;
    723 }
    724 
    725 void
    726 mq200_set_brightness(sc, val)
    727 	struct mq200_softc *sc;
    728 	int val;
    729 {
    730 	sc->sc_brightness = val;
    731 
    732 	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_BRIGHTNESS, &val);
    733 	if (config_hook_call(CONFIG_HOOK_GET,
    734 	     CONFIG_HOOK_BRIGHTNESS, &val) != -1) {
    735 		sc->sc_brightness = val;
    736 	}
    737 }
    738 
    739 void
    740 mq200_set_contrast(sc, val)
    741 	struct mq200_softc *sc;
    742 	int val;
    743 {
    744 	sc->sc_contrast = val;
    745 
    746 	config_hook_call(CONFIG_HOOK_SET, CONFIG_HOOK_CONTRAST, &val);
    747 	if (config_hook_call(CONFIG_HOOK_GET,
    748 	     CONFIG_HOOK_CONTRAST, &val) != -1) {
    749 		sc->sc_contrast = val;
    750 	}
    751 }
    752