1 /* $NetBSD: smdk2410_lcd.c,v 1.5 2010/02/05 21:10:58 snj 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 1.5 2010/02/05 21:10:58 snj 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 "locators.h" 64 #include "wsdisplay.h" 65 66 int lcd_match(struct device *, struct cfdata *, void *); 67 void lcd_attach(struct device *, struct device *, 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 lcdopen, lcdclose, noread, nowrite, lcdioctl, 164 nostop, notty, nopoll, lcdmmap, nokqfilter, D_TTY 165 }; 166 167 #endif /* NWSDISPLAY */ 168 169 CFATTACH_DECL(lcd_ssio, sizeof (struct s3c24x0_lcd_softc), lcd_match, 170 lcd_attach, NULL, NULL); 171 172 int 173 lcd_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 } 182 183 static 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 }; 213 214 void 215 lcd_attach(struct device *parent, struct device *self, void *aux) 216 { 217 struct s3c24x0_lcd_softc *sc = (struct s3c24x0_lcd_softc *)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 aprint_normal( "\n" ); 228 229 /* setup GPIO ports for LCD */ 230 /* XXX: some LCD panels may not need all VD signals */ 231 gpio_ioh = s3c2xx0_softc->sc_gpio_ioh; 232 bus_space_write_4(iot, gpio_ioh, GPIO_PCUP, ~0); 233 bus_space_write_4(iot, gpio_ioh, GPIO_PCCON, 0xaaaaaaaa); 234 bus_space_write_4(iot, gpio_ioh, GPIO_PDUP, ~0); 235 bus_space_write_4(iot, gpio_ioh, GPIO_PDCON, 0xaaaaaaaa); 236 237 s3c24x0_lcd_attach_sub(sc, aux, &samsung_LTS350Q1); 238 239 #if NWSDISPLAY > 0 240 241 aa.console = 0; 242 aa.scrdata = &lcd_screen_list; 243 aa.accessops = &lcd_accessops; 244 aa.accesscookie = sc; 245 246 247 (void) config_found(self, &aa, wsemuldisplaydevprint); 248 #else 249 250 screen = s3c24x0_lcd_new_screen(sc, 240, 320, 16); 251 252 if( screen ){ 253 sc->active = screen; 254 s3c24x0_lcd_start_dma(sc, screen); 255 s3c24x0_lcd_power(sc, 1); 256 } 257 #endif /* NWSDISPLAY */ 258 259 } 260 261 #if NWSDISPLAY == 0 262 263 int 264 lcdopen( dev_t dev, int oflags, int devtype, struct proc *p ) 265 { 266 return 0; 267 } 268 269 int 270 lcdclose( dev_t dev, int fflag, int devtype, struct proc *p ) 271 { 272 return 0; 273 } 274 275 paddr_t 276 lcdmmap( dev_t dev, off_t offset, int size ) 277 { 278 struct s3c24x0_lcd_softc *sc = 279 device_lookup_private(&lcd_cd, minor(dev)); 280 struct s3c24x0_lcd_screen *scr = sc->active; 281 282 return bus_dmamem_mmap(sc->dma_tag, scr->segs, scr->nsegs, 283 offset, 0, BUS_DMA_WAITOK|BUS_DMA_COHERENT); 284 } 285 286 int 287 lcdioctl( dev_t dev, u_long cmd, void *data, 288 int fflag, struct lwp *l ) 289 { 290 return EOPNOTSUPP; 291 } 292 293 #endif /* NWSDISPLAY>0 */ 294 295 #ifdef LCD_DEBUG 296 static void 297 draw_test_pattern_16(struct s3c24x0_lcd_softc *sc, 298 struct s3c24x0_lcd_screen *scr) 299 { 300 int x, y; 301 uint16_t color, *line; 302 char *buf = (char *)(scr->buf_va); 303 304 #define rgb(r,g,b) (((r)<<11) | ((g)<<5) | (b)) 305 306 for (y=0; y < sc->panel_info->panel_height; ++y) { 307 line = (uint16_t *)(buf + scr->stride * y); 308 309 for (x=0; x < sc->panel_info->panel_width; ++x) { 310 switch (((x/30) + (y/10)) % 8) { 311 default: 312 case 0: color = rgb(0x00, 0x00, 0x00); break; 313 case 1: color = rgb(0x00, 0x00, 0x1f); break; 314 case 2: color = rgb(0x00, 0x3f, 0x00); break; 315 case 3: color = rgb(0x00, 0x3f, 0x1f); break; 316 case 4: color = rgb(0x1f, 0x00, 0x00); break; 317 case 5: color = rgb(0x1f, 0x00, 0x1f); break; 318 case 6: color = rgb(0x1f, 0x3f, 0x00); break; 319 case 7: color = rgb(0x1f, 0x3f, 0x1f); break; 320 } 321 322 line[x] = color; 323 } 324 } 325 326 for (x=0; x < MIN(sc->panel_info->panel_height, 327 sc->panel_info->panel_width); ++x) { 328 329 line = (uint16_t *)(buf + scr->stride * x); 330 line[x] = rgb(0x1f, 0x3f, 0x1f); 331 } 332 } 333 334 static void 335 draw_test_pattern_8(struct s3c24x0_lcd_softc *sc, 336 struct s3c24x0_lcd_screen *scr) 337 { 338 int x, y; 339 uint8_t *line; 340 char *buf = (char *)(scr->buf_va); 341 342 343 for (y=0; y < sc->panel_info->panel_height; ++y) { 344 line = (uint8_t *)(buf + scr->stride * y); 345 346 for (x=0; x < sc->panel_info->panel_width; ++x) { 347 line[x] = (((x/15) + (y/20)) % 16); 348 } 349 } 350 351 for (x=0; x < MIN(sc->panel_info->panel_height, 352 sc->panel_info->panel_width); ++x) { 353 354 line = (uint8_t *)(buf + scr->stride * x); 355 line[x] = 7; 356 } 357 } 358 359 360 void 361 draw_test_pattern(struct s3c24x0_lcd_softc *sc, struct s3c24x0_lcd_screen *scr) 362 { 363 switch (scr->depth) { 364 case 16: 365 draw_test_pattern_16(sc, scr); 366 break; 367 case 8: 368 draw_test_pattern_8(sc, scr); 369 break; 370 } 371 } 372 373 374 #endif /* LCD_DEBUG */ 375 376