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smdk2410_lcd.c revision 1.9 
      1 /*	$NetBSD: smdk2410_lcd.c,v 1.9 2014/03/16 05:20:24 dholland 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 1.9 2014/03/16 05:20:24 dholland 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 <sys/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 "locators.h"
     64 #include "wsdisplay.h"
     65 
     66 int	lcd_match(device_t, cfdata_t, void *);
     67 void	lcd_attach(device_t, device_t, void *);
     68 
     69 #ifdef LCD_DEBUG
     70 void draw_test_pattern(struct s3c24x0_lcd_softc *,
     71 	    struct s3c24x0_lcd_screen *scr);
     72 #endif
     73 
     74 #if NWSDISPLAY > 0
     75 
     76 /*
     77  * Screen geometries.
     78  *
     79  * S3C24x0's LCD controller can have virtual screens that are bigger
     80  * than actual LCD panel. (XXX: wscons can't manage such screens for now)
     81  */
     82 struct s3c24x0_wsscreen_descr lcd_bpp16_30x32 = {
     83 	{
     84 		"30x32bpp16", 30, 32,
     85 		&s3c24x0_lcd_emulops,
     86 		8, 10,
     87 		WSSCREEN_WSCOLORS,
     88 	},
     89 	16				/* bits per pixel */
     90 },  lcd_bpp16_30x20 = {
     91 	{
     92 		"30x20bpp16", 30, 20,
     93 		&s3c24x0_lcd_emulops,
     94 		8, 16,
     95 		WSSCREEN_WSCOLORS,
     96 	},
     97 	16
     98 }, lcd_bpp8_30x32 = {
     99 	{
    100 		"30x32bpp8", 30, 32,
    101 		&s3c24x0_lcd_emulops,
    102 		8, 10,
    103 		WSSCREEN_WSCOLORS,
    104 	},
    105 	8
    106 }, lcd_bpp8_40x25 = {			/* with big virtual screen */
    107 	{
    108 		"40x25bpp8", 40, 25,
    109 		&s3c24x0_lcd_emulops,
    110 		8, 16,
    111 		WSSCREEN_WSCOLORS,
    112 	},
    113 	8
    114 }, lcd_bpp4_30x32 = {
    115 	{
    116 		"30x32bpp4", 30, 32,
    117 		&s3c24x0_lcd_emulops,
    118 		8, 10,
    119 		0,			/* 4bpp mode is grayscale */
    120 	},
    121 	4
    122 };
    123 
    124 
    125 static const struct wsscreen_descr *lcd_scr_descr[] = {
    126 #if 0
    127 	/* bpp4 needs a patch to rasops4 */
    128 	&lcd_bpp4_30x32.c,
    129 #endif
    130 	&lcd_bpp8_30x32.c,
    131 	&lcd_bpp8_40x25.c,
    132 	&lcd_bpp16_30x32.c,
    133 	&lcd_bpp16_30x20.c,
    134 };
    135 
    136 #define	N_SCR_DESCR	(sizeof lcd_scr_descr / sizeof lcd_scr_descr[0])
    137 
    138 const struct wsscreen_list lcd_screen_list = {
    139 	N_SCR_DESCR,
    140 	lcd_scr_descr
    141 };
    142 
    143 const struct wsdisplay_accessops lcd_accessops = {
    144 	s3c24x0_lcd_ioctl,
    145 	s3c24x0_lcd_mmap,
    146 	s3c24x0_lcd_alloc_screen,
    147 	s3c24x0_lcd_free_screen,
    148 	s3c24x0_lcd_show_screen,
    149 	NULL, /* load_font */
    150 };
    151 
    152 #else  /* NWSDISPLAY */
    153 /*
    154  * Interface to LCD framebuffer without wscons
    155  */
    156 extern struct cfdriver lcd_cd;
    157 
    158 dev_type_open(lcdopen);
    159 dev_type_close(lcdclose);
    160 dev_type_ioctl(lcdioctl);
    161 dev_type_mmap(lcdmmap);
    162 const struct cdevsw lcd_cdevsw = {
    163 	.d_open = lcdopen,
    164 	.d_close = lcdclose,
    165 	.d_read = noread,
    166 	.d_write = nowrite,
    167 	.d_ioctl = lcdioctl,
    168 	.d_stop = nostop,
    169 	.d_tty = notty,
    170 	.d_poll = nopoll,
    171 	.d_mmap = lcdmmap,
    172 	.d_kqfilter = nokqfilter,
    173 	.d_flag = D_TTY
    174 };
    175 
    176 #endif /* NWSDISPLAY */
    177 
    178 CFATTACH_DECL_NEW(lcd_ssio, sizeof (struct s3c24x0_lcd_softc),  lcd_match,
    179     lcd_attach, NULL, NULL);
    180 
    181 int
    182 lcd_match(device_t parent, cfdata_t cf, void *aux)
    183 {
    184 	struct s3c2xx0_attach_args *sa = aux;
    185 
    186 	if (sa->sa_addr == SSIOCF_ADDR_DEFAULT)
    187 		sa->sa_addr = S3C2410_LCDC_BASE;
    188 
    189 	return 1;
    190 }
    191 
    192 static const struct s3c24x0_lcd_panel_info samsung_LTS350Q1 =
    193 {
    194     240,			/* Width */
    195     320,			/* Height */
    196     10*1000*1000,		/* pixel clock = 10MHz */
    197 
    198 #define	_(field, val)	(((val)-1) << (field##_SHIFT))
    199 
    200     LCDCON1_PNRMODE_TFT,
    201 
    202     /* LCDCON2: vertical timings */
    203     _(LCDCON2_VBPD, 2) |
    204     _(LCDCON2_VFPD, 3) |
    205     _(LCDCON2_LINEVAL, 320) |
    206     _(LCDCON2_VPSW, 2),
    207 
    208     /* LCDCON3: horizontal timings */
    209     _(LCDCON3_HBPD, 7) |
    210     _(LCDCON3_HFPD, 3),
    211 
    212     /* LCDCON4: horizontaol pulse width */
    213     _(LCDCON4_HPSW, 4),
    214 
    215     /* LCDCON5: signal polarities */
    216     LCDCON5_FRM565 | LCDCON5_INVVLINE | LCDCON5_INVVFRAME,
    217 
    218     /* LPCSEL register */
    219     LPCSEL_LPC_EN | LPCSEL_RES_SEL | LPCSEL_MODE_SEL,
    220 #undef _
    221 };
    222 
    223 void
    224 lcd_attach(device_t parent, device_t self, void *aux)
    225 {
    226 	struct s3c24x0_lcd_softc *sc = device_private(self);
    227 	bus_space_tag_t iot =  s3c2xx0_softc->sc_iot;
    228 	bus_space_handle_t gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
    229 #if NWSDISPLAY > 0
    230 	struct wsemuldisplaydev_attach_args aa;
    231 #else
    232 	struct s3c24x0_lcd_screen *screen;
    233 #endif
    234 
    235 
    236 	sc->sc_dev = self;
    237 	aprint_normal( "\n" );
    238 
    239 	/* setup GPIO ports for LCD */
    240 	/* XXX: some LCD panels may not need all VD signals */
    241 	gpio_ioh = s3c2xx0_softc->sc_gpio_ioh;
    242 	bus_space_write_4(iot, gpio_ioh, GPIO_PCUP, ~0);
    243 	bus_space_write_4(iot, gpio_ioh, GPIO_PCCON, 0xaaaaaaaa);
    244 	bus_space_write_4(iot, gpio_ioh, GPIO_PDUP, ~0);
    245 	bus_space_write_4(iot, gpio_ioh, GPIO_PDCON, 0xaaaaaaaa);
    246 
    247 	s3c24x0_lcd_attach_sub(sc, aux, &samsung_LTS350Q1);
    248 
    249 #if NWSDISPLAY > 0
    250 
    251 	aa.console = 0;
    252 	aa.scrdata = &lcd_screen_list;
    253 	aa.accessops = &lcd_accessops;
    254 	aa.accesscookie = sc;
    255 
    256 
    257 	(void) config_found(self, &aa, wsemuldisplaydevprint);
    258 #else
    259 
    260 	screen = s3c24x0_lcd_new_screen(sc, 240, 320, 16);
    261 
    262 	if( screen ){
    263 		sc->active = screen;
    264 		s3c24x0_lcd_start_dma(sc, screen);
    265 		s3c24x0_lcd_power(sc, 1);
    266 	}
    267 #endif /* NWSDISPLAY */
    268 
    269 }
    270 
    271 #if NWSDISPLAY == 0
    272 
    273 int
    274 lcdopen( dev_t dev, int oflags, int devtype, struct proc *p )
    275 {
    276 	return 0;
    277 }
    278 
    279 int
    280 lcdclose( dev_t dev, int fflag, int devtype, struct proc *p )
    281 {
    282 	return 0;
    283 }
    284 
    285 paddr_t
    286 lcdmmap( dev_t dev, off_t offset, int size )
    287 {
    288 	struct s3c24x0_lcd_softc *sc =
    289 		device_lookup_private(&lcd_cd, minor(dev));
    290 	struct s3c24x0_lcd_screen *scr = sc->active;
    291 
    292 	return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs,
    293 	    offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT);
    294 }
    295 
    296 int
    297 lcdioctl( dev_t dev, u_long cmd, void *data,
    298 	    int fflag, struct lwp *l )
    299 {
    300 	return EOPNOTSUPP;
    301 }
    302 
    303 #endif /* NWSDISPLAY>0 */
    304 
    305 #ifdef LCD_DEBUG
    306 static void
    307 draw_test_pattern_16(struct s3c24x0_lcd_softc *sc,
    308     struct s3c24x0_lcd_screen *scr)
    309 {
    310 	int x, y;
    311 	uint16_t color, *line;
    312 	char *buf = (char *)(scr->buf_va);
    313 
    314 #define	rgb(r,g,b)	(((r)<<11) | ((g)<<5) | (b))
    315 
    316 	for (y=0; y < sc->panel_info->panel_height; ++y) {
    317 		line = (uint16_t *)(buf + scr->stride * y);
    318 
    319 		for (x=0; x < sc->panel_info->panel_width; ++x) {
    320 			switch (((x/30) + (y/10)) % 8) {
    321 			default:
    322 			case 0: color = rgb(0x00, 0x00, 0x00); break;
    323 			case 1: color = rgb(0x00, 0x00, 0x1f); break;
    324 			case 2: color = rgb(0x00, 0x3f, 0x00); break;
    325 			case 3: color = rgb(0x00, 0x3f, 0x1f); break;
    326 			case 4: color = rgb(0x1f, 0x00, 0x00); break;
    327 			case 5: color = rgb(0x1f, 0x00, 0x1f); break;
    328 			case 6: color = rgb(0x1f, 0x3f, 0x00); break;
    329 			case 7: color = rgb(0x1f, 0x3f, 0x1f); break;
    330 			}
    331 
    332 			line[x] = color;
    333 		}
    334 	}
    335 
    336 	for (x=0; x < MIN(sc->panel_info->panel_height,
    337 		 sc->panel_info->panel_width); ++x) {
    338 
    339 		line = (uint16_t *)(buf + scr->stride * x);
    340 		line[x] = rgb(0x1f, 0x3f, 0x1f);
    341 	}
    342 }
    343 
    344 static void
    345 draw_test_pattern_8(struct s3c24x0_lcd_softc *sc,
    346     struct s3c24x0_lcd_screen *scr)
    347 {
    348 	int x, y;
    349 	uint8_t *line;
    350 	char *buf = (char *)(scr->buf_va);
    351 
    352 
    353 	for (y=0; y < sc->panel_info->panel_height; ++y) {
    354 		line = (uint8_t *)(buf + scr->stride * y);
    355 
    356 		for (x=0; x < sc->panel_info->panel_width; ++x) {
    357 			line[x] = (((x/15) + (y/20)) % 16);
    358 		}
    359 	}
    360 
    361 	for (x=0; x < MIN(sc->panel_info->panel_height,
    362 		 sc->panel_info->panel_width); ++x) {
    363 
    364 		line = (uint8_t *)(buf + scr->stride * x);
    365 		line[x] = 7;
    366 	}
    367 }
    368 
    369 
    370 void
    371 draw_test_pattern(struct s3c24x0_lcd_softc *sc, struct s3c24x0_lcd_screen *scr)
    372 {
    373 	switch (scr->depth) {
    374 	case 16:
    375 		draw_test_pattern_16(sc, scr);
    376 		break;
    377 	case 8:
    378 		draw_test_pattern_8(sc, scr);
    379 		break;
    380 	}
    381 }
    382 
    383 
    384 #endif /* LCD_DEBUG */
    385 
    386