drivers/video/fsl_diu_fb.c

   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  * SPDX-License-Identifier:     GPL-2.0+
   9  */
  10
  11 #include <common.h>
  12 #include <malloc.h>
  13 #include <asm/io.h>
  14
  15 #include "videomodes.h"
  16 #include <video_fb.h>
  17 #include <fsl_diu_fb.h>
  18 #include <linux/list.h>
  19 #include <linux/fb.h>
  20
  21 /* This setting is used for the ifm pdm360ng with PRIMEVIEW PM070WL3 */
  22 static struct fb_videomode fsl_diu_mode_800_480 = {
  23         .name           = "800x480-60",
  24         .refresh        = 60,
  25         .xres           = 800,
  26         .yres           = 480,
  27         .pixclock       = 31250,
  28         .left_margin    = 86,
  29         .right_margin   = 42,
  30         .upper_margin   = 33,
  31         .lower_margin   = 10,
  32         .hsync_len      = 128,
  33         .vsync_len      = 2,
  34         .sync           = 0,
  35         .vmode          = FB_VMODE_NONINTERLACED
  36 };
  37
  38 /* For the SHARP LQ084S3LG01, used on the P1022DS board */
  39 static struct fb_videomode fsl_diu_mode_800_600 = {
  40         .name           = "800x600-60",
  41         .refresh        = 60,
  42         .xres           = 800,
  43         .yres           = 600,
  44         .pixclock       = 25000,
  45         .left_margin    = 88,
  46         .right_margin   = 40,
  47         .upper_margin   = 23,
  48         .lower_margin   = 1,
  49         .hsync_len      = 128,
  50         .vsync_len      = 4,
  51         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  52         .vmode          = FB_VMODE_NONINTERLACED
  53 };
  54
  55 /*
  56  * These parameters give default parameters
  57  * for video output 1024x768,
  58  * FIXME - change timing to proper amounts
  59  * hsync 31.5kHz, vsync 60Hz
  60  */
  61 static struct fb_videomode fsl_diu_mode_1024_768 = {
  62         .name           = "1024x768-60",
  63         .refresh        = 60,
  64         .xres           = 1024,
  65         .yres           = 768,
  66         .pixclock       = 15385,
  67         .left_margin    = 160,
  68         .right_margin   = 24,
  69         .upper_margin   = 29,
  70         .lower_margin   = 3,
  71         .hsync_len      = 136,
  72         .vsync_len      = 6,
  73         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
  74         .vmode          = FB_VMODE_NONINTERLACED
  75 };
  76
  77 static struct fb_videomode fsl_diu_mode_1280_1024 = {
  78         .name           = "1280x1024-60",
  79         .refresh        = 60,
  80         .xres           = 1280,
  81         .yres           = 1024,
  82         .pixclock       = 9375,
  83         .left_margin    = 38,
  84         .right_margin   = 128,
  85         .upper_margin   = 2,
  86         .lower_margin   = 7,
  87         .hsync_len      = 216,
  88         .vsync_len      = 37,
  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_720 = {
  94         .name           = "1280x720-60",
  95         .refresh        = 60,
  96         .xres           = 1280,
  97         .yres           = 720,
  98         .pixclock       = 13426,
  99         .left_margin    = 192,
 100         .right_margin   = 64,
 101         .upper_margin   = 22,
 102         .lower_margin   = 1,
 103         .hsync_len      = 136,
 104         .vsync_len      = 3,
 105         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 106         .vmode          = FB_VMODE_NONINTERLACED
 107 };
 108
 109 static struct fb_videomode fsl_diu_mode_1920_1080 = {
 110         .name           = "1920x1080-60",
 111         .refresh        = 60,
 112         .xres           = 1920,
 113         .yres           = 1080,
 114         .pixclock       = 5787,
 115         .left_margin    = 328,
 116         .right_margin   = 120,
 117         .upper_margin   = 34,
 118         .lower_margin   = 1,
 119         .hsync_len      = 208,
 120         .vsync_len      = 3,
 121         .sync           = FB_SYNC_COMP_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
 122         .vmode          = FB_VMODE_NONINTERLACED
 123 };
 124
 125 /*
 126  * These are the fields of area descriptor(in DDR memory) for every plane
 127  */
 128 struct diu_ad {
 129         /* Word 0(32-bit) in DDR memory */
 130         __le32 pix_fmt; /* hard coding pixel format */
 131         /* Word 1(32-bit) in DDR memory */
 132         __le32 addr;
 133         /* Word 2(32-bit) in DDR memory */
 134         __le32 src_size_g_alpha;
 135         /* Word 3(32-bit) in DDR memory */
 136         __le32 aoi_size;
 137         /* Word 4(32-bit) in DDR memory */
 138         __le32 offset_xyi;
 139         /* Word 5(32-bit) in DDR memory */
 140         __le32 offset_xyd;
 141         /* Word 6(32-bit) in DDR memory */
 142         __le32 ckmax_r:8;
 143         __le32 ckmax_g:8;
 144         __le32 ckmax_b:8;
 145         __le32 res9:8;
 146         /* Word 7(32-bit) in DDR memory */
 147         __le32 ckmin_r:8;
 148         __le32 ckmin_g:8;
 149         __le32 ckmin_b:8;
 150         __le32 res10:8;
 151         /* Word 8(32-bit) in DDR memory */
 152         __le32 next_ad;
 153         /* Word 9(32-bit) in DDR memory, just for 64-bit aligned */
 154         __le32 res[3];
 155 } __attribute__ ((packed));
 156
 157 /*
 158  * DIU register map
 159  */
 160 struct diu {
 161         __be32 desc[3];
 162         __be32 gamma;
 163         __be32 pallete;
 164         __be32 cursor;
 165         __be32 curs_pos;
 166         __be32 diu_mode;
 167         __be32 bgnd;
 168         __be32 bgnd_wb;
 169         __be32 disp_size;
 170         __be32 wb_size;
 171         __be32 wb_mem_addr;
 172         __be32 hsyn_para;
 173         __be32 vsyn_para;
 174         __be32 syn_pol;
 175         __be32 thresholds;
 176         __be32 int_status;
 177         __be32 int_mask;
 178         __be32 colorbar[8];
 179         __be32 filling;
 180         __be32 plut;
 181 } __attribute__ ((packed));
 182
 183 struct diu_addr {
 184         void *vaddr;            /* Virtual address */
 185         u32 paddr;              /* 32-bit physical address */
 186         unsigned int offset;    /* Alignment offset */
 187 };
 188
 189 static struct fb_info info;
 190
 191 /*
 192  * Align to 64-bit(8-byte), 32-byte, etc.
 193  */
 194 static int allocate_buf(struct diu_addr *buf, u32 size, u32 bytes_align)
 195 {
 196         u32 offset, ssize;
 197         u32 mask;
 198
 199         ssize = size + bytes_align;
 200         buf->vaddr = malloc(ssize);
 201         if (!buf->vaddr)
 202                 return -1;
 203
 204         memset(buf->vaddr, 0, ssize);
 205         mask = bytes_align - 1;
 206         offset = (u32)buf->vaddr & mask;
 207         if (offset) {
 208                 buf->offset = bytes_align - offset;
 209                 buf->vaddr += offset;
 210         } else
 211                 buf->offset = 0;
 212
 213         buf->paddr = virt_to_phys(buf->vaddr);
 214         return 0;
 215 }
 216
 217 /*
 218  * Allocate a framebuffer and an Area Descriptor that points to it.  Both
 219  * are created in the same memory block.  The Area Descriptor is updated to
 220  * point to the framebuffer memory. Memory is aligned as needed.
 221  */
 222 static struct diu_ad *allocate_fb(unsigned int xres, unsigned int yres,
 223                                   unsigned int depth, char **fb)
 224 {
 225         unsigned long size = xres * yres * depth;
 226         struct diu_addr addr;
 227         struct diu_ad *ad;
 228         size_t ad_size = roundup(sizeof(struct diu_ad), 32);
 229
 230         /*
 231          * Allocate a memory block that holds the Area Descriptor and the
 232          * frame buffer right behind it.  To keep the code simple, everything
 233          * is aligned on a 32-byte address.
 234          */
 235         if (allocate_buf(&addr, ad_size + size, 32) < 0)
 236                 return NULL;
 237
 238         ad = addr.vaddr;
 239         ad->addr = cpu_to_le32(addr.paddr + ad_size);
 240         ad->aoi_size = cpu_to_le32((yres << 16) | xres);
 241         ad->src_size_g_alpha = cpu_to_le32((yres << 12) | xres);
 242         ad->offset_xyi = 0;
 243         ad->offset_xyd = 0;
 244
 245         if (fb)
 246                 *fb = addr.vaddr + ad_size;
 247
 248         return ad;
 249 }
 250
 251 int fsl_diu_init(u16 xres, u16 yres, u32 pixel_format, int gamma_fix)
 252 {
 253         struct fb_videomode *fsl_diu_mode_db;
 254         struct diu_ad *ad;
 255         struct diu *hw = (struct diu *)CONFIG_SYS_DIU_ADDR;
 256         u8 *gamma_table_base;
 257         unsigned int i, j;
 258         struct diu_addr gamma;
 259         struct diu_addr cursor;
 260
 261 /* Convert the X,Y resolution pair into a single number */
 262 #define RESOLUTION(x, y) (((u32)(x) << 16) | (y))
 263
 264         switch (RESOLUTION(xres, yres)) {
 265         case RESOLUTION(800, 480):
 266                 fsl_diu_mode_db = &fsl_diu_mode_800_480;
 267                 break;
 268         case RESOLUTION(800, 600):
 269                 fsl_diu_mode_db = &fsl_diu_mode_800_600;
 270                 break;
 271         case RESOLUTION(1024, 768):
 272                 fsl_diu_mode_db = &fsl_diu_mode_1024_768;
 273                 break;
 274         case RESOLUTION(1280, 1024):
 275                 fsl_diu_mode_db = &fsl_diu_mode_1280_1024;
 276                 break;
 277         case RESOLUTION(1280, 720):
 278                 fsl_diu_mode_db = &fsl_diu_mode_1280_720;
 279                 break;
 280         case RESOLUTION(1920, 1080):
 281                 fsl_diu_mode_db = &fsl_diu_mode_1920_1080;
 282                 break;
 283         default:
 284                 printf("DIU:   Unsupported resolution %ux%u\n", xres, yres);
 285                 return -1;
 286         }
 287
 288         /* read mode info */
 289         info.var.xres = fsl_diu_mode_db->xres;
 290         info.var.yres = fsl_diu_mode_db->yres;
 291         info.var.bits_per_pixel = 32;
 292         info.var.pixclock = fsl_diu_mode_db->pixclock;
 293         info.var.left_margin = fsl_diu_mode_db->left_margin;
 294         info.var.right_margin = fsl_diu_mode_db->right_margin;
 295         info.var.upper_margin = fsl_diu_mode_db->upper_margin;
 296         info.var.lower_margin = fsl_diu_mode_db->lower_margin;
 297         info.var.hsync_len = fsl_diu_mode_db->hsync_len;
 298         info.var.vsync_len = fsl_diu_mode_db->vsync_len;
 299         info.var.sync = fsl_diu_mode_db->sync;
 300         info.var.vmode = fsl_diu_mode_db->vmode;
 301         info.fix.line_length = info.var.xres * info.var.bits_per_pixel / 8;
 302
 303         /* Memory allocation for framebuffer */
 304         info.screen_size =
 305                 info.var.xres * info.var.yres * (info.var.bits_per_pixel / 8);
 306         ad = allocate_fb(info.var.xres, info.var.yres,
 307                          info.var.bits_per_pixel / 8, &info.screen_base);
 308         if (!ad) {
 309                 printf("DIU:   Out of memory\n");
 310                 return -1;
 311         }
 312
 313         ad->pix_fmt = pixel_format;
 314
 315         /* Disable chroma keying function */
 316         ad->ckmax_r = 0;
 317         ad->ckmax_g = 0;
 318         ad->ckmax_b = 0;
 319
 320         ad->ckmin_r = 255;
 321         ad->ckmin_g = 255;
 322         ad->ckmin_b = 255;
 323
 324         /* Initialize the gamma table */
 325         if (allocate_buf(&gamma, 256 * 3, 32) < 0) {
 326                 printf("DIU:   Out of memory\n");
 327                 return -1;
 328         }
 329         gamma_table_base = gamma.vaddr;
 330         for (i = 0; i <= 2; i++)
 331                 for (j = 0; j < 256; j++)
 332                         *gamma_table_base++ = j;
 333
 334         if (gamma_fix == 1) {   /* fix the gamma */
 335                 gamma_table_base = gamma.vaddr;
 336                 for (i = 0; i < 256 * 3; i++) {
 337                         gamma_table_base[i] = (gamma_table_base[i] << 2)
 338                                 | ((gamma_table_base[i] >> 6) & 0x03);
 339                 }
 340         }
 341
 342         /* Initialize the cursor */
 343         if (allocate_buf(&cursor, 32 * 32 * 2, 32) < 0) {
 344                 printf("DIU:   Can't alloc cursor data\n");
 345                 return -1;
 346         }
 347
 348         /* Program DIU registers */
 349         out_be32(&hw->diu_mode, 0);     /* Temporarily disable the DIU */
 350
 351         out_be32(&hw->gamma, gamma.paddr);
 352         out_be32(&hw->cursor, cursor.paddr);
 353         out_be32(&hw->bgnd, 0x007F7F7F);
 354         out_be32(&hw->disp_size, info.var.yres << 16 | info.var.xres);
 355         out_be32(&hw->hsyn_para, info.var.left_margin << 22 |
 356                         info.var.hsync_len << 11 |
 357                         info.var.right_margin);
 358
 359         out_be32(&hw->vsyn_para, info.var.upper_margin << 22 |
 360                         info.var.vsync_len << 11 |
 361                         info.var.lower_margin);
 362
 363         /* Pixel Clock configuration */
 364         diu_set_pixel_clock(info.var.pixclock);
 365
 366         /* Set the frame buffers */
 367         out_be32(&hw->desc[0], virt_to_phys(ad));
 368         out_be32(&hw->desc[1], 0);
 369         out_be32(&hw->desc[2], 0);
 370
 371         /* Enable the DIU, set display to all three planes */
 372         out_be32(&hw->diu_mode, 1);
 373
 374         return 0;
 375 }
 376
 377 void *video_hw_init(void)
 378 {
 379         static GraphicDevice ctfb;
 380         const char *options;
 381         unsigned int depth = 0, freq = 0;
 382
 383         if (!video_get_video_mode(&ctfb.winSizeX, &ctfb.winSizeY, &depth, &freq,
 384                                   &options))
 385                 return NULL;
 386
 387         /* Find the monitor port, which is a required option */
 388         if (!options)
 389                 return NULL;
 390         if (strncmp(options, "monitor=", 8) != 0)
 391                 return NULL;
 392
 393         if (platform_diu_init(ctfb.winSizeX, ctfb.winSizeY, options + 8) < 0)
 394                 return NULL;
 395
 396         /* fill in Graphic device struct */
 397         sprintf(ctfb.modeIdent, "%ix%ix%i %ikHz %iHz",
 398                 ctfb.winSizeX, ctfb.winSizeY, depth, 64, freq);
 399
 400         ctfb.frameAdrs = (unsigned int)info.screen_base;
 401         ctfb.plnSizeX = ctfb.winSizeX;
 402         ctfb.plnSizeY = ctfb.winSizeY;
 403
 404         ctfb.gdfBytesPP = 4;
 405         ctfb.gdfIndex = GDF_32BIT_X888RGB;
 406
 407         ctfb.isaBase = 0;
 408         ctfb.pciBase = 0;
 409         ctfb.memSize = info.screen_size;
 410
 411         /* Cursor Start Address */
 412         ctfb.dprBase = 0;
 413         ctfb.vprBase = 0;
 414         ctfb.cprBase = 0;
 415
 416         return &ctfb;
 417 }