err.no Git - linux-2.6/blob - drivers/video/hitfb.c

   1 /*
   2  * linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
   3  *
   4  * (C) 1999 Mihai Spatar
   5  * (C) 2000 YAEGASHI Takeshi
   6  * (C) 2003, 2004 Paul Mundt
   7  * (C) 2003, 2004 Andriy Skulysh
   8  *
   9  *  This file is subject to the terms and conditions of the GNU General Public
  10  *  License. See the file COPYING in the main directory of this archive for
  11  *  more details.
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/kernel.h>
  16 #include <linux/sched.h>
  17 #include <linux/errno.h>
  18 #include <linux/string.h>
  19 #include <linux/mm.h>
  20 #include <linux/slab.h>
  21 #include <linux/delay.h>
  22 #include <linux/init.h>
  23 #include <linux/fb.h>
  24
  25 #include <asm/machvec.h>
  26 #include <asm/uaccess.h>
  27 #include <asm/pgtable.h>
  28 #include <asm/io.h>
  29 #include <asm/hd64461/hd64461.h>
  30
  31 #include <asm/cpu/dac.h>
  32 #include <asm/hp6xx/hp6xx.h>
  33
  34 #define WIDTH 640
  35
  36 static struct fb_var_screeninfo hitfb_var __initdata = {
  37         .activate       = FB_ACTIVATE_NOW,
  38         .height         = -1,
  39         .width          = -1,
  40         .vmode          = FB_VMODE_NONINTERLACED,
  41 };
  42
  43 static struct fb_fix_screeninfo hitfb_fix __initdata = {
  44         .id             = "Hitachi HD64461",
  45         .type           = FB_TYPE_PACKED_PIXELS,
  46         .ypanstep       = 8,
  47         .accel          = FB_ACCEL_NONE,
  48 };
  49
  50 static u32 pseudo_palette[16];
  51 static struct fb_info fb_info;
  52
  53 static inline void hitfb_accel_wait(void)
  54 {
  55         while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
  56 }
  57
  58 static inline void hitfb_accel_start(int truecolor)
  59 {
  60         if (truecolor) {
  61                 fb_writew(6, HD64461_GRCFGR);
  62         } else {
  63                 fb_writew(7, HD64461_GRCFGR);
  64         }
  65 }
  66
  67 static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
  68                                         u16 width, u16 height)
  69 {
  70         u32 saddr = WIDTH * dy + dx;
  71         if (truecolor)
  72                 saddr <<= 1;
  73
  74         fb_writew(width, HD64461_BBTDWR);
  75         fb_writew(height, HD64461_BBTDHR);
  76
  77         fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
  78         fb_writew(saddr >> 16, HD64461_BBTDSARH);
  79
  80 }
  81
  82 static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
  83                                          u16 width, u16 height, u16 color)
  84 {
  85         hitfb_accel_set_dest(truecolor, dx, dy, width, height);
  86
  87         fb_writew(0x00f0, HD64461_BBTROPR);
  88         fb_writew(16, HD64461_BBTMDR);
  89         fb_writew(color, HD64461_GRSCR);
  90
  91         hitfb_accel_start(truecolor);
  92 }
  93
  94 static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
  95                                       u16 dy, u16 width, u16 height, u16 rop,
  96                                       u32 mask_addr)
  97 {
  98         u32 saddr, daddr;
  99         u32 maddr = 0;
 100
 101         fb_writew(rop, HD64461_BBTROPR);
 102         if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
 103                 saddr = WIDTH * (sy + height) + sx + width;
 104                 daddr = WIDTH * (dy + height) + dx + width;
 105                 if (mask_addr) {
 106                         if (truecolor)
 107                                 maddr = ((width >> 3) + 1) * (height + 1) - 1;
 108                         else
 109                                 maddr =
 110                                     (((width >> 4) + 1) * (height + 1) - 1) * 2;
 111
 112                         fb_writew((1 << 5) | 1, HD64461_BBTMDR);
 113                 } else
 114                         fb_writew(1, HD64461_BBTMDR);
 115         } else {
 116                 saddr = WIDTH * sy + sx;
 117                 daddr = WIDTH * dy + dx;
 118                 if (mask_addr) {
 119                         fb_writew((1 << 5), HD64461_BBTMDR);
 120                 } else {
 121                         fb_writew(0, HD64461_BBTMDR);
 122                 }
 123         }
 124         if (truecolor) {
 125                 saddr <<= 1;
 126                 daddr <<= 1;
 127         }
 128         fb_writew(width, HD64461_BBTDWR);
 129         fb_writew(height, HD64461_BBTDHR);
 130         fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
 131         fb_writew(saddr >> 16, HD64461_BBTSSARH);
 132         fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
 133         fb_writew(daddr >> 16, HD64461_BBTDSARH);
 134         if (mask_addr) {
 135                 maddr += mask_addr;
 136                 fb_writew(maddr & 0xffff, HD64461_BBTMARL);
 137                 fb_writew(maddr >> 16, HD64461_BBTMARH);
 138         }
 139         hitfb_accel_start(truecolor);
 140 }
 141
 142 static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
 143 {
 144         if (rect->rop != ROP_COPY)
 145                 cfb_fillrect(p, rect);
 146         else {
 147                 fb_writew(0x00f0, HD64461_BBTROPR);
 148                 fb_writew(16, HD64461_BBTMDR);
 149
 150                 if (p->var.bits_per_pixel == 16) {
 151                         fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
 152                                   HD64461_GRSCR);
 153                         hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
 154                                              rect->height);
 155                         hitfb_accel_start(1);
 156                 } else {
 157                         fb_writew(rect->color, HD64461_GRSCR);
 158                         hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
 159                                              rect->height);
 160                         hitfb_accel_start(0);
 161                 }
 162                 hitfb_accel_wait();
 163         }
 164 }
 165
 166 static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
 167 {
 168         hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
 169                            area->dx, area->dy, area->width, area->height,
 170                            0x00cc, 0);
 171         hitfb_accel_wait();
 172 }
 173
 174 static int hitfb_pan_display(struct fb_var_screeninfo *var,
 175                              struct fb_info *info)
 176 {
 177         int xoffset = var->xoffset;
 178         int yoffset = var->yoffset;
 179
 180         if (xoffset != 0)
 181                 return -EINVAL;
 182
 183         fb_writew(yoffset, HD64461_LCDCBAR);
 184
 185         return 0;
 186 }
 187
 188 int hitfb_blank(int blank_mode, struct fb_info *info)
 189 {
 190         unsigned short v;
 191
 192         if (blank_mode) {
 193                 v = fb_readw(HD64461_LDR1);
 194                 v &= ~HD64461_LDR1_DON;
 195                 fb_writew(v, HD64461_LDR1);
 196
 197                 v = fb_readw(HD64461_LCDCCR);
 198                 v |= HD64461_LCDCCR_MOFF;
 199                 fb_writew(v, HD64461_LCDCCR);
 200
 201                 v = fb_readw(HD64461_STBCR);
 202                 v |= HD64461_STBCR_SLCDST;
 203                 fb_writew(v, HD64461_STBCR);
 204         } else {
 205                 v = fb_readw(HD64461_STBCR);
 206                 v &= ~HD64461_STBCR_SLCDST;
 207                 fb_writew(v, HD64461_STBCR);
 208
 209                 v = fb_readw(HD64461_LDR1);
 210                 v |= HD64461_LDR1_DON;
 211                 fb_writew(v, HD64461_LDR1);
 212
 213                 v = fb_readw(HD64461_LCDCCR);
 214                 v &= ~HD64461_LCDCCR_MOFF;
 215                 fb_writew(v, HD64461_LCDCCR);
 216         }
 217         return 0;
 218 }
 219
 220 static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
 221                            unsigned blue, unsigned transp, struct fb_info *info)
 222 {
 223         if (regno >= info->cmap.len)
 224                 return 1;
 225
 226         switch (info->var.bits_per_pixel) {
 227         case 8:
 228                 fb_writew(regno << 8, HD64461_CPTWAR);
 229                 fb_writew(red >> 10, HD64461_CPTWDR);
 230                 fb_writew(green >> 10, HD64461_CPTWDR);
 231                 fb_writew(blue >> 10, HD64461_CPTWDR);
 232                 break;
 233         case 16:
 234                 ((u32 *) (info->pseudo_palette))[regno] =
 235                     ((red & 0xf800)) |
 236                     ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
 237                 break;
 238         }
 239         return 0;
 240 }
 241
 242 static struct fb_ops hitfb_ops = {
 243         .owner          = THIS_MODULE,
 244         .fb_setcolreg   = hitfb_setcolreg,
 245         .fb_blank       = hitfb_blank,
 246         .fb_pan_display = hitfb_pan_display,
 247         .fb_fillrect    = hitfb_fillrect,
 248         .fb_copyarea    = hitfb_copyarea,
 249         .fb_imageblit   = cfb_imageblit,
 250 };
 251
 252 int __init hitfb_init(void)
 253 {
 254         unsigned short lcdclor, ldr3, ldvndr;
 255         int size;
 256
 257         if (fb_get_options("hitfb", NULL))
 258                 return -ENODEV;
 259
 260         hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
 261         hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
 262
 263         lcdclor = fb_readw(HD64461_LCDCLOR);
 264         ldvndr = fb_readw(HD64461_LDVNDR);
 265         ldr3 = fb_readw(HD64461_LDR3);
 266
 267         switch (ldr3 & 15) {
 268         default:
 269         case 4:
 270                 hitfb_var.bits_per_pixel = 8;
 271                 hitfb_var.xres = lcdclor;
 272                 break;
 273         case 8:
 274                 hitfb_var.bits_per_pixel = 16;
 275                 hitfb_var.xres = lcdclor / 2;
 276                 break;
 277         }
 278         hitfb_fix.line_length = lcdclor;
 279         hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
 280             FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
 281         hitfb_var.yres = ldvndr + 1;
 282         hitfb_var.xres_virtual = hitfb_var.xres;
 283         hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
 284         switch (hitfb_var.bits_per_pixel) {
 285         case 8:
 286                 hitfb_var.red.offset = 0;
 287                 hitfb_var.red.length = 8;
 288                 hitfb_var.green.offset = 0;
 289                 hitfb_var.green.length = 8;
 290                 hitfb_var.blue.offset = 0;
 291                 hitfb_var.blue.length = 8;
 292                 hitfb_var.transp.offset = 0;
 293                 hitfb_var.transp.length = 0;
 294                 break;
 295         case 16:                /* RGB 565 */
 296                 hitfb_var.red.offset = 11;
 297                 hitfb_var.red.length = 5;
 298                 hitfb_var.green.offset = 5;
 299                 hitfb_var.green.length = 6;
 300                 hitfb_var.blue.offset = 0;
 301                 hitfb_var.blue.length = 5;
 302                 hitfb_var.transp.offset = 0;
 303                 hitfb_var.transp.length = 0;
 304                 break;
 305         }
 306
 307         fb_info.fbops = &hitfb_ops;
 308         fb_info.var = hitfb_var;
 309         fb_info.fix = hitfb_fix;
 310         fb_info.pseudo_palette = pseudo_palette;
 311         fb_info.flags = FBINFO_DEFAULT;
 312
 313         fb_info.screen_base = (void *)hitfb_fix.smem_start;
 314
 315         size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
 316         fb_alloc_cmap(&fb_info.cmap, size, 0);
 317
 318         if (register_framebuffer(&fb_info) < 0)
 319                 return -EINVAL;
 320
 321         printk(KERN_INFO "fb%d: %s frame buffer device\n",
 322                fb_info.node, fb_info.fix.id);
 323         return 0;
 324 }
 325
 326 static void __exit hitfb_exit(void)
 327 {
 328         unregister_framebuffer(&fb_info);
 329 }
 330
 331 module_init(hitfb_init);
 332 module_exit(hitfb_exit);
 333
 334 MODULE_LICENSE("GPL");