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