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smdk2410_lcd.c revision 1.3 
      1 /*	$NetBSD: smdk2410_lcd.c,v 1.3 2007/03/04 05:59:45 christos Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2004  Genetec Corporation.  All rights reserved.
      5  * Written by Hiroyuki Bessho for Genetec Corporation.
      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 Genetec Corporation may not be used to endorse or
     16  *    promote products derived from this software without specific prior
     17  *    written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  *
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: smdk2410_lcd.c,v 1.3 2007/03/04 05:59:45 christos Exp $");
     35 
     36 /*
     37  * LCD driver for Samsung SMDK2410.
     38  *
     39  * Controlling LCD is almost completely done through S3C2410's
     40  * integrated LCD controller.  Codes for it is arm/s3c2xx0/s3c24x0_lcd.c.
     41  *
     42  * Codes in this file provide the platform's LCD panel information.
     43  */
     44 
     45 #include <sys/param.h>
     46 #include <sys/systm.h>
     47 #include <sys/conf.h>
     48 #include <sys/event.h>
     49 #include <sys/uio.h>
     50 #include <sys/malloc.h>
     51 
     52 #include <dev/cons.h>
     53 #include <dev/wscons/wsconsio.h>
     54 #include <dev/wscons/wsdisplayvar.h>
     55 #include <dev/wscons/wscons_callbacks.h>
     56 
     57 #include <machine/bus.h>
     58 #include <arm/s3c2xx0/s3c24x0var.h>
     59 #include <arm/s3c2xx0/s3c24x0reg.h>
     60 #include <arm/s3c2xx0/s3c2410reg.h>
     61 #include <arm/s3c2xx0/s3c24x0_lcd.h>
     62 
     63 #include "wsdisplay.h"
     64 
     65 int	lcd_match(struct device *, struct cfdata *, void *);
     66 void	lcd_attach(struct device *, struct device *, void *);
     67 
     68 #ifdef LCD_DEBUG
     69 void draw_test_pattern(struct s3c24x0_lcd_softc *,
     70 	    struct s3c24x0_lcd_screen *scr);
     71 #endif
     72 
     73 #if NWSDISPLAY > 0
     74 
     75 /*
     76  * Screen geometries.
     77  *
     78  * S3C24x0's LCD controller can have virtual screens that are bigger
     79  * than actual LCD panel. (XXX: wscons can't manage such screens for now)
     80  */
     81 struct s3c24x0_wsscreen_descr lcd_bpp16_30x32 = {
     82 	{
     83 		"30x32bpp16", 30, 32,
     84 		&s3c24x0_lcd_emulops,
     85 		8, 10,
     86 		WSSCREEN_WSCOLORS,
     87 	},
     88 	16				/* bits per pixel */
     89 },  lcd_bpp16_30x20 = {
     90 	{
     91 		"30x20bpp16", 30, 20,
     92 		&s3c24x0_lcd_emulops,
     93 		8, 16,
     94 		WSSCREEN_WSCOLORS,
     95 	},
     96 	16
     97 }, lcd_bpp8_30x32 = {
     98 	{
     99 		"30x32bpp8", 30, 32,
    100 		&s3c24x0_lcd_emulops,
    101 		8, 10,
    102 		WSSCREEN_WSCOLORS,
    103 	},
    104 	8
    105 }, lcd_bpp8_40x25 = {			/* with big virtual screen */
    106 	{
    107 		"40x25bpp8", 40, 25,
    108 		&s3c24x0_lcd_emulops,
    109 		8, 16,
    110 		WSSCREEN_WSCOLORS,
    111 	},
    112 	8
    113 }, lcd_bpp4_30x32 = {
    114 	{
    115 		"30x32bpp4", 30, 32,
    116 		&s3c24x0_lcd_emulops,
    117 		8, 10,
    118 		0,			/* 4bpp mode is grayscale */
    119 	},
    120 	4
    121 };
    122 
    123 
    124 static const struct wsscreen_descr *lcd_scr_descr[] = {
    125 #if 0
    126 	/* bpp4 needs a patch to rasops4 */
    127 	&lcd_bpp4_30x32.c,
    128 #endif
    129 	&lcd_bpp8_30x32.c,
    130 	&lcd_bpp8_40x25.c,
    131 	&lcd_bpp16_30x32.c,
    132 	&lcd_bpp16_30x20.c,
    133 };
    134 
    135 #define	N_SCR_DESCR	(sizeof lcd_scr_descr / sizeof lcd_scr_descr[0])
    136 
    137 const struct wsscreen_list lcd_screen_list = {
    138 	N_SCR_DESCR,
    139 	lcd_scr_descr
    140 };
    141 
    142 const struct wsdisplay_accessops lcd_accessops = {
    143 	s3c24x0_lcd_ioctl,
    144 	s3c24x0_lcd_mmap,
    145 	s3c24x0_lcd_alloc_screen,
    146 	s3c24x0_lcd_free_screen,
    147 	s3c24x0_lcd_show_screen,
    148 	NULL, /* load_font */
    149 };
    150 
    151 #else  /* NWSDISPLAY */
    152 /*
    153  * Interface to LCD framebuffer without wscons
    154  */
    155 extern struct cfdriver lcd_cd;
    156 
    157 dev_type_open(lcdopen);
    158 dev_type_close(lcdclose);
    159 dev_type_ioctl(lcdioctl);
    160 dev_type_mmap(lcdmmap);
    161 const struct cdevsw lcd_cdevsw = {
    162 	lcdopen, lcdclose, noread, nowrite, lcdioctl,
    163 	nostop, notty, nopoll, lcdmmap, nokqfilter, D_TTY
    164 };
    165 
    166 #endif /* NWSDISPLAY */
    167 
    168 CFATTACH_DECL(lcd_ssio, sizeof (struct s3c24x0_lcd_softc),  lcd_match,
    169     lcd_attach, NULL, NULL);
    170 
    171 int
    172 lcd_match(struct device *parent, struct cfdata *cf, void *aux)
    173 {
    174 	struct s3c2xx0_attach_args *sa = aux;
    175 
    176 	if (sa->sa_addr == SSIOCF_ADDR_DEFAULT)
    177 		sa->sa_addr = S3C2410_LCDC_BASE;
    178 
    179 	return 1;
    180 }
    181 
    182 static const struct s3c24x0_lcd_panel_info samsung_LTS350Q1 =
    183 {
    184     240,			/* Width */
    185     320,			/* Height */
    186     10*1000*1000,		/* pixel clock = 10MHz */
    187 
    188 #define	_(field, val)	(((val)-1) << (field##_SHIFT))
    189 
    190     LCDCON1_PNRMODE_TFT,
    191 
    192     /* LCDCON2: vertical timings */
    193     _(LCDCON2_VBPD, 2) |
    194     _(LCDCON2_VFPD, 3) |
    195     _(LCDCON2_LINEVAL, 320) |
    196     _(LCDCON2_VPSW, 2),
    197 
    198     /* LCDCON3: horizontal timings */
    199     _(LCDCON3_HBPD, 7) |
    200     _(LCDCON3_HFPD, 3),
    201 
    202     /* LCDCON4: horizontaol pulse width */
    203     _(LCDCON4_HPSW, 4),
    204 
    205     /* LCDCON5: signal polarities */
    206     LCDCON5_FRM565 | LCDCON5_INVVLINE | LCDCON5_INVVFRAME,
    207 
    208     /* LPCSEL register */
    209     LPCSEL_LPC_EN | LPCSEL_RES_SEL | LPCSEL_MODE_SEL,
    210 #undef _
    211 };
    212 
    213 void
    214 lcd_attach(struct device *parent, struct device *self, void *aux)
    215 {
    216 	struct s3c24x0_lcd_softc *sc = (struct s3c24x0_lcd_softc *)self;
    217 	bus_space_tag_t iot =  s3c2xx0_softc->sc_iot;
    218 	bus_space_handle_t gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
    219 #if NWSDISPLAY > 0
    220 	struct wsemuldisplaydev_attach_args aa;
    221 #else
    222 	struct s3c24x0_lcd_screen *screen;
    223 #endif
    224 
    225 
    226 	aprint_normal( "\n" );
    227 
    228 	/* setup GPIO ports for LCD */
    229 	/* XXX: some LCD panels may not need all VD signals */
    230 	gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
    231 	bus_space_write_4(iot, gpio_ioh, GPIO_PCUP, ~0);
    232 	bus_space_write_4(iot, gpio_ioh, GPIO_PCCON, 0xaaaaaaaa);
    233 	bus_space_write_4(iot, gpio_ioh, GPIO_PDUP, ~0);
    234 	bus_space_write_4(iot, gpio_ioh, GPIO_PDCON, 0xaaaaaaaa);
    235 
    236 	s3c24x0_lcd_attach_sub(sc, aux, &samsung_LTS350Q1);
    237 
    238 #if NWSDISPLAY > 0
    239 
    240 	aa.console = 0;
    241 	aa.scrdata = &lcd_screen_list;
    242 	aa.accessops = &lcd_accessops;
    243 	aa.accesscookie = sc;
    244 
    245 
    246 	(void) config_found(self, &aa, wsemuldisplaydevprint);
    247 #else
    248 
    249 	screen = s3c24x0_lcd_new_screen(sc, 240, 320, 16);
    250 
    251 	if( screen ){
    252 		sc->active = screen;
    253 		s3c24x0_lcd_start_dma(sc, screen);
    254 		s3c24x0_lcd_power(sc, 1);
    255 	}
    256 #endif /* NWSDISPLAY */
    257 
    258 }
    259 
    260 #if NWSDISPLAY == 0
    261 
    262 int
    263 lcdopen( dev_t dev, int oflags, int devtype, struct proc *p )
    264 {
    265 	return 0;
    266 }
    267 
    268 int
    269 lcdclose( dev_t dev, int fflag, int devtype, struct proc *p )
    270 {
    271 	return 0;
    272 }
    273 
    274 paddr_t
    275 lcdmmap( dev_t dev, off_t offset, int size )
    276 {
    277 	struct s3c24x0_lcd_softc *sc = device_lookup(&lcd_cd, minor(dev));
    278 	struct s3c24x0_lcd_screen *scr = sc->active;
    279 
    280 	return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs,
    281 	    offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
    282 }
    283 
    284 int
    285 lcdioctl( dev_t dev, u_long cmd, void *data,
    286 	    int fflag, struct lwp *l )
    287 {
    288 	return EOPNOTSUPP;
    289 }
    290 
    291 #endif /* NWSDISPLAY>0 */
    292 
    293 #ifdef LCD_DEBUG
    294 static void
    295 draw_test_pattern_16(struct s3c24x0_lcd_softc *sc,
    296     struct s3c24x0_lcd_screen *scr)
    297 {
    298 	int x, y;
    299 	uint16_t color, *line;
    300 	char *buf = (char *)(scr->buf_va);
    301 
    302 #define	rgb(r,g,b)	(((r)<<11) | ((g)<<5) | (b))
    303 
    304 	for (y=0; y < sc->panel_info->panel_height; ++y) {
    305 		line = (uint16_t *)(buf + scr->stride * y);
    306 
    307 		for (x=0; x < sc->panel_info->panel_width; ++x) {
    308 			switch (((x/30) + (y/10)) % 8) {
    309 			default:
    310 			case 0: color = rgb(0x00, 0x00, 0x00); break;
    311 			case 1: color = rgb(0x00, 0x00, 0x1f); break;
    312 			case 2: color = rgb(0x00, 0x3f, 0x00); break;
    313 			case 3: color = rgb(0x00, 0x3f, 0x1f); break;
    314 			case 4: color = rgb(0x1f, 0x00, 0x00); break;
    315 			case 5: color = rgb(0x1f, 0x00, 0x1f); break;
    316 			case 6: color = rgb(0x1f, 0x3f, 0x00); break;
    317 			case 7: color = rgb(0x1f, 0x3f, 0x1f); break;
    318 			}
    319 
    320 			line[x] = color;
    321 		}
    322 	}
    323 
    324 	for (x=0; x < MIN(sc->panel_info->panel_height,
    325 		 sc->panel_info->panel_width); ++x) {
    326 
    327 		line = (uint16_t *)(buf + scr->stride * x);
    328 		line[x] = rgb(0x1f, 0x3f, 0x1f);
    329 	}
    330 }
    331 
    332 static void
    333 draw_test_pattern_8(struct s3c24x0_lcd_softc *sc,
    334     struct s3c24x0_lcd_screen *scr)
    335 {
    336 	int x, y;
    337 	uint8_t *line;
    338 	char *buf = (char *)(scr->buf_va);
    339 
    340 
    341 	for (y=0; y < sc->panel_info->panel_height; ++y) {
    342 		line = (uint8_t *)(buf + scr->stride * y);
    343 
    344 		for (x=0; x < sc->panel_info->panel_width; ++x) {
    345 			line[x] = (((x/15) + (y/20)) % 16);
    346 		}
    347 	}
    348 
    349 	for (x=0; x < MIN(sc->panel_info->panel_height,
    350 		 sc->panel_info->panel_width); ++x) {
    351 
    352 		line = (uint8_t *)(buf + scr->stride * x);
    353 		line[x] = 7;
    354 	}
    355 }
    356 
    357 
    358 void
    359 draw_test_pattern(struct s3c24x0_lcd_softc *sc, struct s3c24x0_lcd_screen *scr)
    360 {
    361 	switch (scr->depth) {
    362 	case 16:
    363 		draw_test_pattern_16(sc, scr);
    364 		break;
    365 	case 8:
    366 		draw_test_pattern_8(sc, scr);
    367 		break;
    368 	}
    369 }
    370 
    371 
    372 #endif /* LCD_DEBUG */
    373 
    374