1/* $NetBSD: smdk2410_lcd.c,v 1.6 2011/07/01 20:44:21 dyoung 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 1.6 2011/07/01 20:44:21 dyoung 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 66int lcd_match(struct device *, struct cfdata *, void *); 67void lcd_attach(struct device *, struct device *, void *); 68 69#ifdef LCD_DEBUG 70void 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 */ 82struct 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 125static 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 138const struct wsscreen_list lcd_screen_list = { 139 N_SCR_DESCR, 140 lcd_scr_descr 141}; 142 143const 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 */ 156extern struct cfdriver lcd_cd; 157 158dev_type_open(lcdopen); 159dev_type_close(lcdclose); 160dev_type_ioctl(lcdioctl); 161dev_type_mmap(lcdmmap); 162const struct cdevsw lcd_cdevsw = { 163 lcdopen, lcdclose, noread, nowrite, lcdioctl, 164 nostop, notty, nopoll, lcdmmap, nokqfilter, D_TTY 165}; 166 167#endif /* NWSDISPLAY */ 168 169CFATTACH_DECL_NEW(lcd_ssio, sizeof (struct s3c24x0_lcd_softc), lcd_match, 170 lcd_attach, NULL, NULL); 171 172int 173lcd_match(struct device *parent, struct cfdata *cf, void *aux) 174{ 175 struct s3c2xx0_attach_args *sa = aux; 176 177 if (sa->sa_addr == SSIOCF_ADDR_DEFAULT) 178 sa->sa_addr = S3C2410_LCDC_BASE; 179 180 return 1; 181} 182 183static const struct s3c24x0_lcd_panel_info samsung_LTS350Q1 = 184{ 185 240, /* Width */ 186 320, /* Height */ 187 10*1000*1000, /* pixel clock = 10MHz */ 188 189#define _(field, val) (((val)-1) << (field##_SHIFT)) 190 191 LCDCON1_PNRMODE_TFT, 192 193 /* LCDCON2: vertical timings */ 194 _(LCDCON2_VBPD, 2) | 195 _(LCDCON2_VFPD, 3) | 196 _(LCDCON2_LINEVAL, 320) | 197 _(LCDCON2_VPSW, 2), 198 199 /* LCDCON3: horizontal timings */ 200 _(LCDCON3_HBPD, 7) | 201 _(LCDCON3_HFPD, 3), 202 203 /* LCDCON4: horizontaol pulse width */ 204 _(LCDCON4_HPSW, 4), 205 206 /* LCDCON5: signal polarities */ 207 LCDCON5_FRM565 | LCDCON5_INVVLINE | LCDCON5_INVVFRAME, 208 209 /* LPCSEL register */ 210 LPCSEL_LPC_EN | LPCSEL_RES_SEL | LPCSEL_MODE_SEL, 211#undef _ 212}; 213 214void 215lcd_attach(struct device *parent, struct device *self, void *aux) 216{ 217 struct s3c24x0_lcd_softc *sc = device_private(self); 218 bus_space_tag_t iot = s3c2xx0_softc->sc_iot; 219 bus_space_handle_t gpio_ioh = s3c2xx0_softc->sc_gpio_ioh; 220#if NWSDISPLAY > 0 221 struct wsemuldisplaydev_attach_args aa; 222#else 223 struct s3c24x0_lcd_screen *screen; 224#endif 225 226 227 sc->sc_dev = self; 228 aprint_normal( "\n" ); 229 230 /* setup GPIO ports for LCD */ 231 /* XXX: some LCD panels may not need all VD signals */ 232 gpio_ioh = s3c2xx0_softc->sc_gpio_ioh; 233 bus_space_write_4(iot, gpio_ioh, GPIO_PCUP, ~0); 234 bus_space_write_4(iot, gpio_ioh, GPIO_PCCON, 0xaaaaaaaa); 235 bus_space_write_4(iot, gpio_ioh, GPIO_PDUP, ~0); 236 bus_space_write_4(iot, gpio_ioh, GPIO_PDCON, 0xaaaaaaaa); 237 238 s3c24x0_lcd_attach_sub(sc, aux, &samsung_LTS350Q1); 239 240#if NWSDISPLAY > 0 241 242 aa.console = 0; 243 aa.scrdata = &lcd_screen_list; 244 aa.accessops = &lcd_accessops; 245 aa.accesscookie = sc; 246 247 248 (void) config_found(self, &aa, wsemuldisplaydevprint); 249#else 250 251 screen = s3c24x0_lcd_new_screen(sc, 240, 320, 16); 252 253 if( screen ){ 254 sc->active = screen; 255 s3c24x0_lcd_start_dma(sc, screen); 256 s3c24x0_lcd_power(sc, 1); 257 } 258#endif /* NWSDISPLAY */ 259 260} 261 262#if NWSDISPLAY == 0 263 264int 265lcdopen( dev_t dev, int oflags, int devtype, struct proc *p ) 266{ 267 return 0; 268} 269 270int 271lcdclose( dev_t dev, int fflag, int devtype, struct proc *p ) 272{ 273 return 0; 274} 275 276paddr_t 277lcdmmap( dev_t dev, off_t offset, int size ) 278{ 279 struct s3c24x0_lcd_softc *sc = 280 device_lookup_private(&lcd_cd, minor(dev)); 281 struct s3c24x0_lcd_screen *scr = sc->active; 282 283 return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs, 284 offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT); 285} 286 287int 288lcdioctl( dev_t dev, u_long cmd, void *data, 289 int fflag, struct lwp *l ) 290{ 291 return EOPNOTSUPP; 292} 293 294#endif /* NWSDISPLAY>0 */ 295 296#ifdef LCD_DEBUG 297static void 298draw_test_pattern_16(struct s3c24x0_lcd_softc *sc, 299 struct s3c24x0_lcd_screen *scr) 300{ 301 int x, y; 302 uint16_t color, *line; 303 char *buf = (char *)(scr->buf_va); 304 305#define rgb(r,g,b) (((r)<<11) | ((g)<<5) | (b)) 306 307 for (y=0; y < sc->panel_info->panel_height; ++y) { 308 line = (uint16_t *)(buf + scr->stride * y); 309 310 for (x=0; x < sc->panel_info->panel_width; ++x) { 311 switch (((x/30) + (y/10)) % 8) { 312 default: 313 case 0: color = rgb(0x00, 0x00, 0x00); break; 314 case 1: color = rgb(0x00, 0x00, 0x1f); break; 315 case 2: color = rgb(0x00, 0x3f, 0x00); break; 316 case 3: color = rgb(0x00, 0x3f, 0x1f); break; 317 case 4: color = rgb(0x1f, 0x00, 0x00); break; 318 case 5: color = rgb(0x1f, 0x00, 0x1f); break; 319 case 6: color = rgb(0x1f, 0x3f, 0x00); break; 320 case 7: color = rgb(0x1f, 0x3f, 0x1f); break; 321 } 322 323 line[x] = color; 324 } 325 } 326 327 for (x=0; x < MIN(sc->panel_info->panel_height, 328 sc->panel_info->panel_width); ++x) { 329 330 line = (uint16_t *)(buf + scr->stride * x); 331 line[x] = rgb(0x1f, 0x3f, 0x1f); 332 } 333} 334 335static void 336draw_test_pattern_8(struct s3c24x0_lcd_softc *sc, 337 struct s3c24x0_lcd_screen *scr) 338{ 339 int x, y; 340 uint8_t *line; 341 char *buf = (char *)(scr->buf_va); 342 343 344 for (y=0; y < sc->panel_info->panel_height; ++y) { 345 line = (uint8_t *)(buf + scr->stride * y); 346 347 for (x=0; x < sc->panel_info->panel_width; ++x) { 348 line[x] = (((x/15) + (y/20)) % 16); 349 } 350 } 351 352 for (x=0; x < MIN(sc->panel_info->panel_height, 353 sc->panel_info->panel_width); ++x) { 354 355 line = (uint8_t *)(buf + scr->stride * x); 356 line[x] = 7; 357 } 358} 359 360 361void 362draw_test_pattern(struct s3c24x0_lcd_softc *sc, struct s3c24x0_lcd_screen *scr) 363{ 364 switch (scr->depth) { 365 case 16: 366 draw_test_pattern_16(sc, scr); 367 break; 368 case 8: 369 draw_test_pattern_8(sc, scr); 370 break; 371 } 372} 373 374 375#endif /* LCD_DEBUG */ 376 377