1 /* 2 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc. 3 * Authors: York Sun <yorksun@freescale.com> 4 * Timur Tabi <timur@freescale.com> 5 * 6 * FSL DIU Framebuffer driver 7 * 8 * See file CREDITS for list of people who contributed to this 9 * project. 10 * 11 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Public License as 13 * published by the Free Software Foundation; either version 2 of 14 * the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 24 * MA 02111-1307 USA 25 */ 26 27 #include <common.h> 28 #include <malloc.h> 29 #include <asm/io.h> 30 31 #include "videomodes.h" 32 #include <video_fb.h> 33 #include <fsl_diu_fb.h> 34 #include <linux/list.h> 35 #include <linux/fb.h> 36 37 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */ 38 static struct fb_videomode fsl_diu_mode_800_480 = { 39 .name = "800x480-60", 40 .refresh = 60, 41 .xres = 800, 42 .yres = 480, 43 .pixclock = 31250, 44 .left_margin = 86, 45 .right_margin = 42, 46 .upper_margin = 33, 47 .lower_margin = 10, 48 .hsync_len = 128, 49 .vsync_len = 2, 50 .sync = 0, 51 .vmode = FB_VMODE_NONINTERLACED 52 }; 53 54 /* For the SHARP LQ084S3LG01, used on the P1022DS board */ 55 static struct fb_videomode fsl_diu_mode_800_600 = { 56 .name = "800x600-60", 57 .refresh = 60, 58 .xres = 800, 59 .yres = 600, 60 .pixclock = 25000, 61 .left_margin = 88, 62 .right_margin = 40, 63 .upper_margin = 23, 64 .lower_margin = 1, 65 .hsync_len = 128, 66 .vsync_len = 4, 67 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 68 .vmode = FB_VMODE_NONINTERLACED 69 }; 70 71 /* 72 * These parameters give default parameters 73 * for video output 1024x768, 74 * FIXME - change timing to proper amounts 75 * hsync 31.5kHz, vsync 60Hz 76 */ 77 static struct fb_videomode fsl_diu_mode_1024_768 = { 78 .name = "1024x768-60", 79 .refresh = 60, 80 .xres = 1024, 81 .yres = 768, 82 .pixclock = 15385, 83 .left_margin = 160, 84 .right_margin = 24, 85 .upper_margin = 29, 86 .lower_margin = 3, 87 .hsync_len = 136, 88 .vsync_len = 6, 89 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 90 .vmode = FB_VMODE_NONINTERLACED 91 }; 92 93 static struct fb_videomode fsl_diu_mode_1280_1024 = { 94 .name = "1280x1024-60", 95 .refresh = 60, 96 .xres = 1280, 97 .yres = 1024, 98 .pixclock = 9375, 99 .left_margin = 38, 100 .right_margin = 128, 101 .upper_margin = 2, 102 .lower_margin = 7, 103 .hsync_len = 216, 104 .vsync_len = 37, 105 .sync = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, 106 .vmode = FB_VMODE_NONINTERLACED 107 }; 108 109 /* 110 * These are the fields of area descriptor(in DDR memory) for every plane 111 */ 112 struct diu_ad { 113 /* Word 0(32-bit) in DDR memory */ 114 __le32 pix_fmt; /* hard coding pixel format */ 115 /* Word 1(32-bit) in DDR memory */ 116 __le32 addr; 117 /* Word 2(32-bit) in DDR memory */ 118 __le32 src_size_g_alpha; 119 /* Word 3(32-bit) in DDR memory */ 120 __le32 aoi_size; 121 /* Word 4(32-bit) in DDR memory */ 122 __le32 offset_xyi; 123 /* Word 5(32-bit) in DDR memory */ 124 __le32 offset_xyd; 125 /* Word 6(32-bit) in DDR memory */ 126 __le32 ckmax_r:8; 127 __le32 ckmax_g:8; 128 __le32 ckmax_b:8; 129 __le32 res9:8; 130 /* Word 7(32-bit) in DDR memory */ 131 __le32 ckmin_r:8; 132 __le32 ckmin_g:8; 133 __le32 ckmin_b:8; 134 __le32 res10:8; 135 /* Word 8(32-bit) in DDR memory */ 136 __le32 next_ad; 137 /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */ 138 __le32 res[3]; 139 } __attribute__ ((packed)); 140 141 /* 142 * DIU register map 143 */ 144 struct diu { 145 __be32 desc[3]; 146 __be32 gamma; 147 __be32 pallete; 148 __be32 cursor; 149 __be32 curs_pos; 150 __be32 diu_mode; 151 __be32 bgnd; 152 __be32 bgnd_wb; 153 __be32 disp_size; 154 __be32 wb_size; 155 __be32 wb_mem_addr; 156 __be32 hsyn_para; 157 __be32 vsyn_para; 158 __be32 syn_pol; 159 __be32 thresholds; 160 __be32 int_status; 161 __be32 int_mask; 162 __be32 colorbar[8]; 163 __be32 filling; 164 __be32 plut; 165 } __attribute__ ((packed)); 166 167 struct diu_addr { 168 void *vaddr; /* Virtual address */ 169 u32 paddr; /* 32-bit physical address */ 170 unsigned int offset; /* Alignment offset */ 171 }; 172 173 static struct fb_info info; 174 175 /* 176 * Align to 64-bit(8-byte), 32-byte, etc. 177 */ 178 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align) 179 { 180 u32 offset, ssize; 181 u32 mask; 182 183 ssize = size + bytes_align; 184 buf->vaddr = malloc(ssize); 185 if (!buf->vaddr) 186 return -1; 187 188 memset(buf->vaddr, 0, ssize); 189 mask = bytes_align - 1; 190 offset = (u32)buf->vaddr & mask; 191 if (offset) { 192 buf->offset = bytes_align - offset; 193 buf->vaddr += offset; 194 } else 195 buf->offset = 0; 196 197 buf->paddr = virt_to_phys(buf->vaddr); 198 return 0; 199 } 200 201 /* 202 * Allocate a framebuffer and an Area Descriptor that points to it. Both 203 * are created in the same memory block. The Area Descriptor is updated to 204 * point to the framebuffer memory. Memory is aligned as needed. 205 */ 206 static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres, 207 unsigned int depth, char **fb) 208 { 209 unsigned long size = xres * yres * depth; 210 struct diu_addr addr; 211 struct diu_ad *ad; 212 size_t ad_size = roundup(sizeof(struct diu_ad), 32); 213 214 /* 215 * Allocate a memory block that holds the Area Descriptor and the 216 * frame buffer right behind it. To keep the code simple, everything 217 * is aligned on a 32-byte address. 218 */ 219 if (allocate_buf(&addr, ad_size + size, 32) < 0) 220 return NULL; 221 222 ad = addr.vaddr; 223 ad->addr = cpu_to_le32(addr.paddr + ad_size); 224 ad->aoi_size = cpu_to_le32((yres << 16) | xres); 225 ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres); 226 ad->offset_xyi = 0; 227 ad->offset_xyd = 0; 228 229 if (fb) 230 *fb = addr.vaddr + ad_size; 231 232 return ad; 233 } 234 235 int fsl_diu_init(u16 xres, u16 yres, u32 pixel_format, int gamma_fix) 236 { 237 struct fb_videomode *fsl_diu_mode_db; 238 struct diu_ad *ad; 239 struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR; 240 u8 *gamma_table_base; 241 unsigned int i, j; 242 struct diu_ad *dummy_ad; 243 struct diu_addr gamma; 244 struct diu_addr cursor; 245 246 /* Convert the X,Y resolution pair into a single number */ 247 #define RESOLUTION(x, y) (((u32)(x) << 16) | (y)) 248 249 switch (RESOLUTION(xres, yres)) { 250 case RESOLUTION(800, 480): 251 fsl_diu_mode_db = &fsl_diu_mode_800_480; 252 break; 253 case RESOLUTION(800, 600): 254 fsl_diu_mode_db = &fsl_diu_mode_800_600; 255 case RESOLUTION(1024, 768): 256 fsl_diu_mode_db = &fsl_diu_mode_1024_768; 257 case RESOLUTION(1280, 1024): 258 fsl_diu_mode_db = &fsl_diu_mode_1280_1024; 259 break; 260 default: 261 printf("DIU: Unsupported resolution %ux%u\n", xres, yres); 262 return -1; 263 } 264 265 /* The AD struct for the dummy framebuffer and the FB itself */ 266 dummy_ad = allocate_fb(2, 4, 4, NULL); 267 if (!dummy_ad) { 268 printf("DIU: Out of memory\n"); 269 return -1; 270 } 271 dummy_ad->pix_fmt = 0x88883316; 272 273 /* read mode info */ 274 info.var.xres = fsl_diu_mode_db->xres; 275 info.var.yres = fsl_diu_mode_db->yres; 276 info.var.bits_per_pixel = 32; 277 info.var.pixclock = fsl_diu_mode_db->pixclock; 278 info.var.left_margin = fsl_diu_mode_db->left_margin; 279 info.var.right_margin = fsl_diu_mode_db->right_margin; 280 info.var.upper_margin = fsl_diu_mode_db->upper_margin; 281 info.var.lower_margin = fsl_diu_mode_db->lower_margin; 282 info.var.hsync_len = fsl_diu_mode_db->hsync_len; 283 info.var.vsync_len = fsl_diu_mode_db->vsync_len; 284 info.var.sync = fsl_diu_mode_db->sync; 285 info.var.vmode = fsl_diu_mode_db->vmode; 286 info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8; 287 288 /* Memory allocation for framebuffer */ 289 info.screen_size = 290 info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8); 291 ad = allocate_fb(info.var.xres, info.var.yres, 292 info.var.bits_per_pixel / 8, &info.screen_base); 293 if (!ad) { 294 printf("DIU: Out of memory\n"); 295 return -1; 296 } 297 298 ad->pix_fmt = pixel_format; 299 300 /* Disable chroma keying function */ 301 ad->ckmax_r = 0; 302 ad->ckmax_g = 0; 303 ad->ckmax_b = 0; 304 305 ad->ckmin_r = 255; 306 ad->ckmin_g = 255; 307 ad->ckmin_b = 255; 308 309 /* Initialize the gamma table */ 310 if (allocate_buf(&gamma, 256 * 3, 32) < 0) { 311 printf("DIU: Out of memory\n"); 312 return -1; 313 } 314 gamma_table_base = gamma.vaddr; 315 for (i = 0; i <= 2; i++) 316 for (j = 0; j < 256; j++) 317 *gamma_table_base++ = j; 318 319 if (gamma_fix == 1) { /* fix the gamma */ 320 gamma_table_base = gamma.vaddr; 321 for (i = 0; i < 256 * 3; i++) { 322 gamma_table_base[i] = (gamma_table_base[i] << 2) 323 | ((gamma_table_base[i] >> 6) & 0x03); 324 } 325 } 326 327 /* Initialize the cursor */ 328 if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) { 329 printf("DIU: Can't alloc cursor data\n"); 330 return -1; 331 } 332 333 /* Program DIU registers */ 334 out_be32(&hw->diu_mode, 0); /* Temporarily disable the DIU */ 335 336 out_be32(&hw->gamma, gamma.paddr); 337 out_be32(&hw->cursor, cursor.paddr); 338 out_be32(&hw->bgnd, 0x007F7F7F); 339 out_be32(&hw->bgnd_wb, 0); 340 out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres); 341 out_be32(&hw->wb_size, 0); 342 out_be32(&hw->wb_mem_addr, 0); 343 out_be32(&hw->hsyn_para, info.var.left_margin << 22 | 344 info.var.hsync_len << 11 | 345 info.var.right_margin); 346 347 out_be32(&hw->vsyn_para, info.var.upper_margin << 22 | 348 info.var.vsync_len << 11 | 349 info.var.lower_margin); 350 351 out_be32(&hw->syn_pol, 0); 352 out_be32(&hw->thresholds, 0x00037800); 353 out_be32(&hw->int_status, 0); 354 out_be32(&hw->int_mask, 0); 355 out_be32(&hw->plut, 0x01F5F666); 356 /* Pixel Clock configuration */ 357 diu_set_pixel_clock(info.var.pixclock); 358 359 /* Set the frame buffers */ 360 out_be32(&hw->desc[0], virt_to_phys(ad)); 361 out_be32(&hw->desc[1], virt_to_phys(dummy_ad)); 362 out_be32(&hw->desc[2], virt_to_phys(dummy_ad)); 363 364 /* Enable the DIU, set display to all three planes */ 365 out_be32(&hw->diu_mode, 1); 366 367 return 0; 368 } 369 370 void *video_hw_init(void) 371 { 372 static GraphicDevice ctfb; 373 const char *options; 374 unsigned int depth = 0, freq = 0; 375 376 if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq, 377 &options)) 378 return NULL; 379 380 /* Find the monitor port, which is a required option */ 381 if (!options) 382 return NULL; 383 if (strncmp(options, "monitor=", 8) != 0) 384 return NULL; 385 386 if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0) 387 return NULL; 388 389 /* fill in Graphic device struct */ 390 sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz", 391 ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq); 392 393 ctfb.frameAdrs = (unsigned int)info.screen_base; 394 ctfb.plnSizeX = ctfb.winSizeX; 395 ctfb.plnSizeY = ctfb.winSizeY; 396 397 ctfb.gdfBytesPP = 4; 398 ctfb.gdfIndex = GDF_32BIT_X888RGB; 399 400 ctfb.isaBase = 0; 401 ctfb.pciBase = 0; 402 ctfb.memSize = info.screen_size; 403 404 /* Cursor Start Address */ 405 ctfb.dprBase = 0; 406 ctfb.vprBase = 0; 407 ctfb.cprBase = 0; 408 409 return &ctfb; 410 } 411