1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * drivers/mb862xx/mb862xxfb.c 4 * 5 * Fujitsu Carmine/Coral-P(A)/Lime framebuffer driver 6 * 7 * (C) 2008 Anatolij Gustschin <agust@denx.de> 8 * DENX Software Engineering 9 */ 10 11 #undef DEBUG 12 13 #include <linux/fb.h> 14 #include <linux/delay.h> 15 #include <linux/uaccess.h> 16 #include <linux/module.h> 17 #include <linux/init.h> 18 #include <linux/interrupt.h> 19 #include <linux/pci.h> 20 #if defined(CONFIG_OF) 21 #include <linux/of_platform.h> 22 #endif 23 #include "mb862xxfb.h" 24 #include "mb862xx_reg.h" 25 26 #define NR_PALETTE 256 27 #define MB862XX_MEM_SIZE 0x1000000 28 #define CORALP_MEM_SIZE 0x2000000 29 #define CARMINE_MEM_SIZE 0x8000000 30 #define DRV_NAME "mb862xxfb" 31 32 #if defined(CONFIG_SOCRATES) 33 static struct mb862xx_gc_mode socrates_gc_mode = { 34 /* Mode for Prime View PM070WL4 TFT LCD Panel */ 35 { "800x480", 45, 800, 480, 40000, 86, 42, 33, 10, 128, 2, 0, 0, 0 }, 36 /* 16 bits/pixel, 16MB, 133MHz, SDRAM memory mode value */ 37 16, 0x1000000, GC_CCF_COT_133, 0x4157ba63 38 }; 39 #endif 40 41 /* Helpers */ 42 static inline int h_total(struct fb_var_screeninfo *var) 43 { 44 return var->xres + var->left_margin + 45 var->right_margin + var->hsync_len; 46 } 47 48 static inline int v_total(struct fb_var_screeninfo *var) 49 { 50 return var->yres + var->upper_margin + 51 var->lower_margin + var->vsync_len; 52 } 53 54 static inline int hsp(struct fb_var_screeninfo *var) 55 { 56 return var->xres + var->right_margin - 1; 57 } 58 59 static inline int vsp(struct fb_var_screeninfo *var) 60 { 61 return var->yres + var->lower_margin - 1; 62 } 63 64 static inline int d_pitch(struct fb_var_screeninfo *var) 65 { 66 return var->xres * var->bits_per_pixel / 8; 67 } 68 69 static inline unsigned int chan_to_field(unsigned int chan, 70 struct fb_bitfield *bf) 71 { 72 chan &= 0xffff; 73 chan >>= 16 - bf->length; 74 return chan << bf->offset; 75 } 76 77 static int mb862xxfb_setcolreg(unsigned regno, 78 unsigned red, unsigned green, unsigned blue, 79 unsigned transp, struct fb_info *info) 80 { 81 struct mb862xxfb_par *par = info->par; 82 unsigned int val; 83 84 switch (info->fix.visual) { 85 case FB_VISUAL_TRUECOLOR: 86 if (regno < 16) { 87 val = chan_to_field(red, &info->var.red); 88 val |= chan_to_field(green, &info->var.green); 89 val |= chan_to_field(blue, &info->var.blue); 90 par->pseudo_palette[regno] = val; 91 } 92 break; 93 case FB_VISUAL_PSEUDOCOLOR: 94 if (regno < 256) { 95 val = (red >> 8) << 16; 96 val |= (green >> 8) << 8; 97 val |= blue >> 8; 98 outreg(disp, GC_L0PAL0 + (regno * 4), val); 99 } 100 break; 101 default: 102 return 1; /* unsupported type */ 103 } 104 return 0; 105 } 106 107 static int mb862xxfb_check_var(struct fb_var_screeninfo *var, 108 struct fb_info *fbi) 109 { 110 unsigned long tmp; 111 112 if (fbi->dev) 113 dev_dbg(fbi->dev, "%s\n", __func__); 114 115 /* check if these values fit into the registers */ 116 if (var->hsync_len > 255 || var->vsync_len > 255) 117 return -EINVAL; 118 119 if ((var->xres + var->right_margin) >= 4096) 120 return -EINVAL; 121 122 if ((var->yres + var->lower_margin) > 4096) 123 return -EINVAL; 124 125 if (h_total(var) > 4096 || v_total(var) > 4096) 126 return -EINVAL; 127 128 if (var->xres_virtual > 4096 || var->yres_virtual > 4096) 129 return -EINVAL; 130 131 if (var->bits_per_pixel <= 8) 132 var->bits_per_pixel = 8; 133 else if (var->bits_per_pixel <= 16) 134 var->bits_per_pixel = 16; 135 else if (var->bits_per_pixel <= 32) 136 var->bits_per_pixel = 32; 137 138 /* 139 * can cope with 8,16 or 24/32bpp if resulting 140 * pitch is divisible by 64 without remainder 141 */ 142 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) { 143 int r; 144 145 var->bits_per_pixel = 0; 146 do { 147 var->bits_per_pixel += 8; 148 r = d_pitch(&fbi->var) % GC_L0M_L0W_UNIT; 149 } while (r && var->bits_per_pixel <= 32); 150 151 if (d_pitch(&fbi->var) % GC_L0M_L0W_UNIT) 152 return -EINVAL; 153 } 154 155 /* line length is going to be 128 bit aligned */ 156 tmp = (var->xres * var->bits_per_pixel) / 8; 157 if ((tmp & 15) != 0) 158 return -EINVAL; 159 160 /* set r/g/b positions and validate bpp */ 161 switch (var->bits_per_pixel) { 162 case 8: 163 var->red.length = var->bits_per_pixel; 164 var->green.length = var->bits_per_pixel; 165 var->blue.length = var->bits_per_pixel; 166 var->red.offset = 0; 167 var->green.offset = 0; 168 var->blue.offset = 0; 169 var->transp.length = 0; 170 break; 171 case 16: 172 var->red.length = 5; 173 var->green.length = 5; 174 var->blue.length = 5; 175 var->red.offset = 10; 176 var->green.offset = 5; 177 var->blue.offset = 0; 178 var->transp.length = 0; 179 break; 180 case 24: 181 case 32: 182 var->transp.length = 8; 183 var->red.length = 8; 184 var->green.length = 8; 185 var->blue.length = 8; 186 var->transp.offset = 24; 187 var->red.offset = 16; 188 var->green.offset = 8; 189 var->blue.offset = 0; 190 break; 191 default: 192 return -EINVAL; 193 } 194 return 0; 195 } 196 197 /* 198 * set display parameters 199 */ 200 static int mb862xxfb_set_par(struct fb_info *fbi) 201 { 202 struct mb862xxfb_par *par = fbi->par; 203 unsigned long reg, sc; 204 205 dev_dbg(par->dev, "%s\n", __func__); 206 if (par->type == BT_CORALP) 207 mb862xxfb_init_accel(fbi, fbi->var.xres); 208 209 if (par->pre_init) 210 return 0; 211 212 /* disp off */ 213 reg = inreg(disp, GC_DCM1); 214 reg &= ~GC_DCM01_DEN; 215 outreg(disp, GC_DCM1, reg); 216 217 /* set display reference clock div. */ 218 sc = par->refclk / (1000000 / fbi->var.pixclock) - 1; 219 reg = inreg(disp, GC_DCM1); 220 reg &= ~(GC_DCM01_CKS | GC_DCM01_RESV | GC_DCM01_SC); 221 reg |= sc << 8; 222 outreg(disp, GC_DCM1, reg); 223 dev_dbg(par->dev, "SC 0x%lx\n", sc); 224 225 /* disp dimension, format */ 226 reg = pack(d_pitch(&fbi->var) / GC_L0M_L0W_UNIT, 227 (fbi->var.yres - 1)); 228 if (fbi->var.bits_per_pixel == 16) 229 reg |= GC_L0M_L0C_16; 230 outreg(disp, GC_L0M, reg); 231 232 if (fbi->var.bits_per_pixel == 32) { 233 reg = inreg(disp, GC_L0EM); 234 outreg(disp, GC_L0EM, reg | GC_L0EM_L0EC_24); 235 } 236 outreg(disp, GC_WY_WX, 0); 237 reg = pack(fbi->var.yres - 1, fbi->var.xres); 238 outreg(disp, GC_WH_WW, reg); 239 outreg(disp, GC_L0OA0, 0); 240 outreg(disp, GC_L0DA0, 0); 241 outreg(disp, GC_L0DY_L0DX, 0); 242 outreg(disp, GC_L0WY_L0WX, 0); 243 outreg(disp, GC_L0WH_L0WW, reg); 244 245 /* both HW-cursors off */ 246 reg = inreg(disp, GC_CPM_CUTC); 247 reg &= ~(GC_CPM_CEN0 | GC_CPM_CEN1); 248 outreg(disp, GC_CPM_CUTC, reg); 249 250 /* timings */ 251 reg = pack(fbi->var.xres - 1, fbi->var.xres - 1); 252 outreg(disp, GC_HDB_HDP, reg); 253 reg = pack((fbi->var.yres - 1), vsp(&fbi->var)); 254 outreg(disp, GC_VDP_VSP, reg); 255 reg = ((fbi->var.vsync_len - 1) << 24) | 256 pack((fbi->var.hsync_len - 1), hsp(&fbi->var)); 257 outreg(disp, GC_VSW_HSW_HSP, reg); 258 outreg(disp, GC_HTP, pack(h_total(&fbi->var) - 1, 0)); 259 outreg(disp, GC_VTR, pack(v_total(&fbi->var) - 1, 0)); 260 261 /* display on */ 262 reg = inreg(disp, GC_DCM1); 263 reg |= GC_DCM01_DEN | GC_DCM01_L0E; 264 reg &= ~GC_DCM01_ESY; 265 outreg(disp, GC_DCM1, reg); 266 return 0; 267 } 268 269 static int mb862xxfb_pan(struct fb_var_screeninfo *var, 270 struct fb_info *info) 271 { 272 struct mb862xxfb_par *par = info->par; 273 unsigned long reg; 274 275 reg = pack(var->yoffset, var->xoffset); 276 outreg(disp, GC_L0WY_L0WX, reg); 277 278 reg = pack(info->var.yres_virtual, info->var.xres_virtual); 279 outreg(disp, GC_L0WH_L0WW, reg); 280 return 0; 281 } 282 283 static int mb862xxfb_blank(int mode, struct fb_info *fbi) 284 { 285 struct mb862xxfb_par *par = fbi->par; 286 unsigned long reg; 287 288 dev_dbg(fbi->dev, "blank mode=%d\n", mode); 289 290 switch (mode) { 291 case FB_BLANK_POWERDOWN: 292 reg = inreg(disp, GC_DCM1); 293 reg &= ~GC_DCM01_DEN; 294 outreg(disp, GC_DCM1, reg); 295 break; 296 case FB_BLANK_UNBLANK: 297 reg = inreg(disp, GC_DCM1); 298 reg |= GC_DCM01_DEN; 299 outreg(disp, GC_DCM1, reg); 300 break; 301 case FB_BLANK_NORMAL: 302 case FB_BLANK_VSYNC_SUSPEND: 303 case FB_BLANK_HSYNC_SUSPEND: 304 default: 305 return 1; 306 } 307 return 0; 308 } 309 310 static int mb862xxfb_ioctl(struct fb_info *fbi, unsigned int cmd, 311 unsigned long arg) 312 { 313 struct mb862xxfb_par *par = fbi->par; 314 struct mb862xx_l1_cfg *l1_cfg = &par->l1_cfg; 315 void __user *argp = (void __user *)arg; 316 int *enable; 317 u32 l1em = 0; 318 319 switch (cmd) { 320 case MB862XX_L1_GET_CFG: 321 if (copy_to_user(argp, l1_cfg, sizeof(*l1_cfg))) 322 return -EFAULT; 323 break; 324 case MB862XX_L1_SET_CFG: 325 if (copy_from_user(l1_cfg, argp, sizeof(*l1_cfg))) 326 return -EFAULT; 327 if (l1_cfg->dh == 0 || l1_cfg->dw == 0) 328 return -EINVAL; 329 if ((l1_cfg->sw >= l1_cfg->dw) && (l1_cfg->sh >= l1_cfg->dh)) { 330 /* downscaling */ 331 outreg(cap, GC_CAP_CSC, 332 pack((l1_cfg->sh << 11) / l1_cfg->dh, 333 (l1_cfg->sw << 11) / l1_cfg->dw)); 334 l1em = inreg(disp, GC_L1EM); 335 l1em &= ~GC_L1EM_DM; 336 } else if ((l1_cfg->sw <= l1_cfg->dw) && 337 (l1_cfg->sh <= l1_cfg->dh)) { 338 /* upscaling */ 339 outreg(cap, GC_CAP_CSC, 340 pack((l1_cfg->sh << 11) / l1_cfg->dh, 341 (l1_cfg->sw << 11) / l1_cfg->dw)); 342 outreg(cap, GC_CAP_CMSS, 343 pack(l1_cfg->sw >> 1, l1_cfg->sh)); 344 outreg(cap, GC_CAP_CMDS, 345 pack(l1_cfg->dw >> 1, l1_cfg->dh)); 346 l1em = inreg(disp, GC_L1EM); 347 l1em |= GC_L1EM_DM; 348 } 349 350 if (l1_cfg->mirror) { 351 outreg(cap, GC_CAP_CBM, 352 inreg(cap, GC_CAP_CBM) | GC_CBM_HRV); 353 l1em |= l1_cfg->dw * 2 - 8; 354 } else { 355 outreg(cap, GC_CAP_CBM, 356 inreg(cap, GC_CAP_CBM) & ~GC_CBM_HRV); 357 l1em &= 0xffff0000; 358 } 359 outreg(disp, GC_L1EM, l1em); 360 break; 361 case MB862XX_L1_ENABLE: 362 enable = (int *)arg; 363 if (*enable) { 364 outreg(disp, GC_L1DA, par->cap_buf); 365 outreg(cap, GC_CAP_IMG_START, 366 pack(l1_cfg->sy >> 1, l1_cfg->sx)); 367 outreg(cap, GC_CAP_IMG_END, 368 pack(l1_cfg->sh, l1_cfg->sw)); 369 outreg(disp, GC_L1M, GC_L1M_16 | GC_L1M_YC | GC_L1M_CS | 370 (par->l1_stride << 16)); 371 outreg(disp, GC_L1WY_L1WX, 372 pack(l1_cfg->dy, l1_cfg->dx)); 373 outreg(disp, GC_L1WH_L1WW, 374 pack(l1_cfg->dh - 1, l1_cfg->dw)); 375 outreg(disp, GC_DLS, 1); 376 outreg(cap, GC_CAP_VCM, 377 GC_VCM_VIE | GC_VCM_CM | GC_VCM_VS_PAL); 378 outreg(disp, GC_DCM1, inreg(disp, GC_DCM1) | 379 GC_DCM1_DEN | GC_DCM1_L1E); 380 } else { 381 outreg(cap, GC_CAP_VCM, 382 inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE); 383 outreg(disp, GC_DCM1, 384 inreg(disp, GC_DCM1) & ~GC_DCM1_L1E); 385 } 386 break; 387 case MB862XX_L1_CAP_CTL: 388 enable = (int *)arg; 389 if (*enable) { 390 outreg(cap, GC_CAP_VCM, 391 inreg(cap, GC_CAP_VCM) | GC_VCM_VIE); 392 } else { 393 outreg(cap, GC_CAP_VCM, 394 inreg(cap, GC_CAP_VCM) & ~GC_VCM_VIE); 395 } 396 break; 397 default: 398 return -EINVAL; 399 } 400 return 0; 401 } 402 403 /* framebuffer ops */ 404 static struct fb_ops mb862xxfb_ops = { 405 .owner = THIS_MODULE, 406 .fb_check_var = mb862xxfb_check_var, 407 .fb_set_par = mb862xxfb_set_par, 408 .fb_setcolreg = mb862xxfb_setcolreg, 409 .fb_blank = mb862xxfb_blank, 410 .fb_pan_display = mb862xxfb_pan, 411 .fb_fillrect = cfb_fillrect, 412 .fb_copyarea = cfb_copyarea, 413 .fb_imageblit = cfb_imageblit, 414 .fb_ioctl = mb862xxfb_ioctl, 415 }; 416 417 /* initialize fb_info data */ 418 static int mb862xxfb_init_fbinfo(struct fb_info *fbi) 419 { 420 struct mb862xxfb_par *par = fbi->par; 421 struct mb862xx_gc_mode *mode = par->gc_mode; 422 unsigned long reg; 423 int stride; 424 425 fbi->fbops = &mb862xxfb_ops; 426 fbi->pseudo_palette = par->pseudo_palette; 427 fbi->screen_base = par->fb_base; 428 fbi->screen_size = par->mapped_vram; 429 430 strcpy(fbi->fix.id, DRV_NAME); 431 fbi->fix.smem_start = (unsigned long)par->fb_base_phys; 432 fbi->fix.mmio_start = (unsigned long)par->mmio_base_phys; 433 fbi->fix.mmio_len = par->mmio_len; 434 fbi->fix.accel = FB_ACCEL_NONE; 435 fbi->fix.type = FB_TYPE_PACKED_PIXELS; 436 fbi->fix.type_aux = 0; 437 fbi->fix.xpanstep = 1; 438 fbi->fix.ypanstep = 1; 439 fbi->fix.ywrapstep = 0; 440 441 reg = inreg(disp, GC_DCM1); 442 if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) { 443 /* get the disp mode from active display cfg */ 444 unsigned long sc = ((reg & GC_DCM01_SC) >> 8) + 1; 445 unsigned long hsp, vsp, ht, vt; 446 447 dev_dbg(par->dev, "using bootloader's disp. mode\n"); 448 fbi->var.pixclock = (sc * 1000000) / par->refclk; 449 fbi->var.xres = (inreg(disp, GC_HDB_HDP) & 0x0fff) + 1; 450 reg = inreg(disp, GC_VDP_VSP); 451 fbi->var.yres = ((reg >> 16) & 0x0fff) + 1; 452 vsp = (reg & 0x0fff) + 1; 453 fbi->var.xres_virtual = fbi->var.xres; 454 fbi->var.yres_virtual = fbi->var.yres; 455 reg = inreg(disp, GC_L0EM); 456 if (reg & GC_L0EM_L0EC_24) { 457 fbi->var.bits_per_pixel = 32; 458 } else { 459 reg = inreg(disp, GC_L0M); 460 if (reg & GC_L0M_L0C_16) 461 fbi->var.bits_per_pixel = 16; 462 else 463 fbi->var.bits_per_pixel = 8; 464 } 465 reg = inreg(disp, GC_VSW_HSW_HSP); 466 fbi->var.hsync_len = ((reg & 0xff0000) >> 16) + 1; 467 fbi->var.vsync_len = ((reg & 0x3f000000) >> 24) + 1; 468 hsp = (reg & 0xffff) + 1; 469 ht = ((inreg(disp, GC_HTP) & 0xfff0000) >> 16) + 1; 470 fbi->var.right_margin = hsp - fbi->var.xres; 471 fbi->var.left_margin = ht - hsp - fbi->var.hsync_len; 472 vt = ((inreg(disp, GC_VTR) & 0xfff0000) >> 16) + 1; 473 fbi->var.lower_margin = vsp - fbi->var.yres; 474 fbi->var.upper_margin = vt - vsp - fbi->var.vsync_len; 475 } else if (mode) { 476 dev_dbg(par->dev, "using supplied mode\n"); 477 fb_videomode_to_var(&fbi->var, (struct fb_videomode *)mode); 478 fbi->var.bits_per_pixel = mode->def_bpp ? mode->def_bpp : 8; 479 } else { 480 int ret; 481 482 ret = fb_find_mode(&fbi->var, fbi, "640x480-16@60", 483 NULL, 0, NULL, 16); 484 if (ret == 0 || ret == 4) { 485 dev_err(par->dev, 486 "failed to get initial mode\n"); 487 return -EINVAL; 488 } 489 } 490 491 fbi->var.xoffset = 0; 492 fbi->var.yoffset = 0; 493 fbi->var.grayscale = 0; 494 fbi->var.nonstd = 0; 495 fbi->var.height = -1; 496 fbi->var.width = -1; 497 fbi->var.accel_flags = 0; 498 fbi->var.vmode = FB_VMODE_NONINTERLACED; 499 fbi->var.activate = FB_ACTIVATE_NOW; 500 fbi->flags = FBINFO_DEFAULT | 501 #ifdef __BIG_ENDIAN 502 FBINFO_FOREIGN_ENDIAN | 503 #endif 504 FBINFO_HWACCEL_XPAN | 505 FBINFO_HWACCEL_YPAN; 506 507 /* check and possibly fix bpp */ 508 if ((fbi->fbops->fb_check_var)(&fbi->var, fbi)) 509 dev_err(par->dev, "check_var() failed on initial setup?\n"); 510 511 fbi->fix.visual = fbi->var.bits_per_pixel == 8 ? 512 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; 513 fbi->fix.line_length = (fbi->var.xres_virtual * 514 fbi->var.bits_per_pixel) / 8; 515 fbi->fix.smem_len = fbi->fix.line_length * fbi->var.yres_virtual; 516 517 /* 518 * reserve space for capture buffers and two cursors 519 * at the end of vram: 720x576 * 2 * 2.2 + 64x64 * 16. 520 */ 521 par->cap_buf = par->mapped_vram - 0x1bd800 - 0x10000; 522 par->cap_len = 0x1bd800; 523 par->l1_cfg.sx = 0; 524 par->l1_cfg.sy = 0; 525 par->l1_cfg.sw = 720; 526 par->l1_cfg.sh = 576; 527 par->l1_cfg.dx = 0; 528 par->l1_cfg.dy = 0; 529 par->l1_cfg.dw = 720; 530 par->l1_cfg.dh = 576; 531 stride = par->l1_cfg.sw * (fbi->var.bits_per_pixel / 8); 532 par->l1_stride = stride / 64 + ((stride % 64) ? 1 : 0); 533 outreg(cap, GC_CAP_CBM, GC_CBM_OO | GC_CBM_CBST | 534 (par->l1_stride << 16)); 535 outreg(cap, GC_CAP_CBOA, par->cap_buf); 536 outreg(cap, GC_CAP_CBLA, par->cap_buf + par->cap_len); 537 return 0; 538 } 539 540 /* 541 * show some display controller and cursor registers 542 */ 543 static ssize_t mb862xxfb_show_dispregs(struct device *dev, 544 struct device_attribute *attr, char *buf) 545 { 546 struct fb_info *fbi = dev_get_drvdata(dev); 547 struct mb862xxfb_par *par = fbi->par; 548 char *ptr = buf; 549 unsigned int reg; 550 551 for (reg = GC_DCM0; reg <= GC_L0DY_L0DX; reg += 4) 552 ptr += sprintf(ptr, "%08x = %08x\n", 553 reg, inreg(disp, reg)); 554 555 for (reg = GC_CPM_CUTC; reg <= GC_CUY1_CUX1; reg += 4) 556 ptr += sprintf(ptr, "%08x = %08x\n", 557 reg, inreg(disp, reg)); 558 559 for (reg = GC_DCM1; reg <= GC_L0WH_L0WW; reg += 4) 560 ptr += sprintf(ptr, "%08x = %08x\n", 561 reg, inreg(disp, reg)); 562 563 for (reg = 0x400; reg <= 0x410; reg += 4) 564 ptr += sprintf(ptr, "geo %08x = %08x\n", 565 reg, inreg(geo, reg)); 566 567 for (reg = 0x400; reg <= 0x410; reg += 4) 568 ptr += sprintf(ptr, "draw %08x = %08x\n", 569 reg, inreg(draw, reg)); 570 571 for (reg = 0x440; reg <= 0x450; reg += 4) 572 ptr += sprintf(ptr, "draw %08x = %08x\n", 573 reg, inreg(draw, reg)); 574 575 return ptr - buf; 576 } 577 578 static DEVICE_ATTR(dispregs, 0444, mb862xxfb_show_dispregs, NULL); 579 580 static irqreturn_t mb862xx_intr(int irq, void *dev_id) 581 { 582 struct mb862xxfb_par *par = (struct mb862xxfb_par *) dev_id; 583 unsigned long reg_ist, mask; 584 585 if (!par) 586 return IRQ_NONE; 587 588 if (par->type == BT_CARMINE) { 589 /* Get Interrupt Status */ 590 reg_ist = inreg(ctrl, GC_CTRL_STATUS); 591 mask = inreg(ctrl, GC_CTRL_INT_MASK); 592 if (reg_ist == 0) 593 return IRQ_HANDLED; 594 595 reg_ist &= mask; 596 if (reg_ist == 0) 597 return IRQ_HANDLED; 598 599 /* Clear interrupt status */ 600 outreg(ctrl, 0x0, reg_ist); 601 } else { 602 /* Get status */ 603 reg_ist = inreg(host, GC_IST); 604 mask = inreg(host, GC_IMASK); 605 606 reg_ist &= mask; 607 if (reg_ist == 0) 608 return IRQ_HANDLED; 609 610 /* Clear status */ 611 outreg(host, GC_IST, ~reg_ist); 612 } 613 return IRQ_HANDLED; 614 } 615 616 #if defined(CONFIG_FB_MB862XX_LIME) 617 /* 618 * GDC (Lime, Coral(B/Q), Mint, ...) on host bus 619 */ 620 static int mb862xx_gdc_init(struct mb862xxfb_par *par) 621 { 622 unsigned long ccf, mmr; 623 unsigned long ver, rev; 624 625 if (!par) 626 return -ENODEV; 627 628 #if defined(CONFIG_FB_PRE_INIT_FB) 629 par->pre_init = 1; 630 #endif 631 par->host = par->mmio_base; 632 par->i2c = par->mmio_base + MB862XX_I2C_BASE; 633 par->disp = par->mmio_base + MB862XX_DISP_BASE; 634 par->cap = par->mmio_base + MB862XX_CAP_BASE; 635 par->draw = par->mmio_base + MB862XX_DRAW_BASE; 636 par->geo = par->mmio_base + MB862XX_GEO_BASE; 637 par->pio = par->mmio_base + MB862XX_PIO_BASE; 638 639 par->refclk = GC_DISP_REFCLK_400; 640 641 ver = inreg(host, GC_CID); 642 rev = inreg(pio, GC_REVISION); 643 if ((ver == 0x303) && (rev & 0xffffff00) == 0x20050100) { 644 dev_info(par->dev, "Fujitsu Lime v1.%d found\n", 645 (int)rev & 0xff); 646 par->type = BT_LIME; 647 ccf = par->gc_mode ? par->gc_mode->ccf : GC_CCF_COT_100; 648 mmr = par->gc_mode ? par->gc_mode->mmr : 0x414fb7f2; 649 } else { 650 dev_info(par->dev, "? GDC, CID/Rev.: 0x%lx/0x%lx \n", ver, rev); 651 return -ENODEV; 652 } 653 654 if (!par->pre_init) { 655 outreg(host, GC_CCF, ccf); 656 udelay(200); 657 outreg(host, GC_MMR, mmr); 658 udelay(10); 659 } 660 661 /* interrupt status */ 662 outreg(host, GC_IST, 0); 663 outreg(host, GC_IMASK, GC_INT_EN); 664 return 0; 665 } 666 667 static int of_platform_mb862xx_probe(struct platform_device *ofdev) 668 { 669 struct device_node *np = ofdev->dev.of_node; 670 struct device *dev = &ofdev->dev; 671 struct mb862xxfb_par *par; 672 struct fb_info *info; 673 struct resource res; 674 resource_size_t res_size; 675 unsigned long ret = -ENODEV; 676 677 if (of_address_to_resource(np, 0, &res)) { 678 dev_err(dev, "Invalid address\n"); 679 return -ENXIO; 680 } 681 682 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev); 683 if (info == NULL) { 684 dev_err(dev, "cannot allocate framebuffer\n"); 685 return -ENOMEM; 686 } 687 688 par = info->par; 689 par->info = info; 690 par->dev = dev; 691 692 par->irq = irq_of_parse_and_map(np, 0); 693 if (par->irq == NO_IRQ) { 694 dev_err(dev, "failed to map irq\n"); 695 ret = -ENODEV; 696 goto fbrel; 697 } 698 699 res_size = resource_size(&res); 700 par->res = request_mem_region(res.start, res_size, DRV_NAME); 701 if (par->res == NULL) { 702 dev_err(dev, "Cannot claim framebuffer/mmio\n"); 703 ret = -ENXIO; 704 goto irqdisp; 705 } 706 707 #if defined(CONFIG_SOCRATES) 708 par->gc_mode = &socrates_gc_mode; 709 #endif 710 711 par->fb_base_phys = res.start; 712 par->mmio_base_phys = res.start + MB862XX_MMIO_BASE; 713 par->mmio_len = MB862XX_MMIO_SIZE; 714 if (par->gc_mode) 715 par->mapped_vram = par->gc_mode->max_vram; 716 else 717 par->mapped_vram = MB862XX_MEM_SIZE; 718 719 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram); 720 if (par->fb_base == NULL) { 721 dev_err(dev, "Cannot map framebuffer\n"); 722 goto rel_reg; 723 } 724 725 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len); 726 if (par->mmio_base == NULL) { 727 dev_err(dev, "Cannot map registers\n"); 728 goto fb_unmap; 729 } 730 731 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n", 732 (u64)par->fb_base_phys, (ulong)par->mapped_vram); 733 dev_dbg(dev, "mmio phys 0x%llx 0x%lx, (irq = %d)\n", 734 (u64)par->mmio_base_phys, (ulong)par->mmio_len, par->irq); 735 736 if (mb862xx_gdc_init(par)) 737 goto io_unmap; 738 739 if (request_irq(par->irq, mb862xx_intr, 0, 740 DRV_NAME, (void *)par)) { 741 dev_err(dev, "Cannot request irq\n"); 742 goto io_unmap; 743 } 744 745 mb862xxfb_init_fbinfo(info); 746 747 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) { 748 dev_err(dev, "Could not allocate cmap for fb_info.\n"); 749 goto free_irq; 750 } 751 752 if ((info->fbops->fb_set_par)(info)) 753 dev_err(dev, "set_var() failed on initial setup?\n"); 754 755 if (register_framebuffer(info)) { 756 dev_err(dev, "failed to register framebuffer\n"); 757 goto rel_cmap; 758 } 759 760 dev_set_drvdata(dev, info); 761 762 if (device_create_file(dev, &dev_attr_dispregs)) 763 dev_err(dev, "Can't create sysfs regdump file\n"); 764 return 0; 765 766 rel_cmap: 767 fb_dealloc_cmap(&info->cmap); 768 free_irq: 769 outreg(host, GC_IMASK, 0); 770 free_irq(par->irq, (void *)par); 771 io_unmap: 772 iounmap(par->mmio_base); 773 fb_unmap: 774 iounmap(par->fb_base); 775 rel_reg: 776 release_mem_region(res.start, res_size); 777 irqdisp: 778 irq_dispose_mapping(par->irq); 779 fbrel: 780 framebuffer_release(info); 781 return ret; 782 } 783 784 static int of_platform_mb862xx_remove(struct platform_device *ofdev) 785 { 786 struct fb_info *fbi = dev_get_drvdata(&ofdev->dev); 787 struct mb862xxfb_par *par = fbi->par; 788 resource_size_t res_size = resource_size(par->res); 789 unsigned long reg; 790 791 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id); 792 793 /* display off */ 794 reg = inreg(disp, GC_DCM1); 795 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E); 796 outreg(disp, GC_DCM1, reg); 797 798 /* disable interrupts */ 799 outreg(host, GC_IMASK, 0); 800 801 free_irq(par->irq, (void *)par); 802 irq_dispose_mapping(par->irq); 803 804 device_remove_file(&ofdev->dev, &dev_attr_dispregs); 805 806 unregister_framebuffer(fbi); 807 fb_dealloc_cmap(&fbi->cmap); 808 809 iounmap(par->mmio_base); 810 iounmap(par->fb_base); 811 812 release_mem_region(par->res->start, res_size); 813 framebuffer_release(fbi); 814 return 0; 815 } 816 817 /* 818 * common types 819 */ 820 static struct of_device_id of_platform_mb862xx_tbl[] = { 821 { .compatible = "fujitsu,MB86276", }, 822 { .compatible = "fujitsu,lime", }, 823 { .compatible = "fujitsu,MB86277", }, 824 { .compatible = "fujitsu,mint", }, 825 { .compatible = "fujitsu,MB86293", }, 826 { .compatible = "fujitsu,MB86294", }, 827 { .compatible = "fujitsu,coral", }, 828 { /* end */ } 829 }; 830 MODULE_DEVICE_TABLE(of, of_platform_mb862xx_tbl); 831 832 static struct platform_driver of_platform_mb862xxfb_driver = { 833 .driver = { 834 .name = DRV_NAME, 835 .of_match_table = of_platform_mb862xx_tbl, 836 }, 837 .probe = of_platform_mb862xx_probe, 838 .remove = of_platform_mb862xx_remove, 839 }; 840 #endif 841 842 #if defined(CONFIG_FB_MB862XX_PCI_GDC) 843 static int coralp_init(struct mb862xxfb_par *par) 844 { 845 int cn, ver; 846 847 par->host = par->mmio_base; 848 par->i2c = par->mmio_base + MB862XX_I2C_BASE; 849 par->disp = par->mmio_base + MB862XX_DISP_BASE; 850 par->cap = par->mmio_base + MB862XX_CAP_BASE; 851 par->draw = par->mmio_base + MB862XX_DRAW_BASE; 852 par->geo = par->mmio_base + MB862XX_GEO_BASE; 853 par->pio = par->mmio_base + MB862XX_PIO_BASE; 854 855 par->refclk = GC_DISP_REFCLK_400; 856 857 if (par->mapped_vram >= 0x2000000) { 858 /* relocate gdc registers space */ 859 writel(1, par->fb_base + MB862XX_MMIO_BASE + GC_RSW); 860 udelay(1); /* wait at least 20 bus cycles */ 861 } 862 863 ver = inreg(host, GC_CID); 864 cn = (ver & GC_CID_CNAME_MSK) >> 8; 865 ver = ver & GC_CID_VERSION_MSK; 866 if (cn == 3) { 867 unsigned long reg; 868 869 dev_info(par->dev, "Fujitsu Coral-%s GDC Rev.%d found\n",\ 870 (ver == 6) ? "P" : (ver == 8) ? "PA" : "?", 871 par->pdev->revision); 872 reg = inreg(disp, GC_DCM1); 873 if (reg & GC_DCM01_DEN && reg & GC_DCM01_L0E) 874 par->pre_init = 1; 875 876 if (!par->pre_init) { 877 outreg(host, GC_CCF, GC_CCF_CGE_166 | GC_CCF_COT_133); 878 udelay(200); 879 outreg(host, GC_MMR, GC_MMR_CORALP_EVB_VAL); 880 udelay(10); 881 } 882 /* Clear interrupt status */ 883 outreg(host, GC_IST, 0); 884 } else { 885 return -ENODEV; 886 } 887 888 mb862xx_i2c_init(par); 889 return 0; 890 } 891 892 static int init_dram_ctrl(struct mb862xxfb_par *par) 893 { 894 unsigned long i = 0; 895 896 /* 897 * Set io mode first! Spec. says IC may be destroyed 898 * if not set to SSTL2/LVCMOS before init. 899 */ 900 outreg(dram_ctrl, GC_DCTL_IOCONT1_IOCONT0, GC_EVB_DCTL_IOCONT1_IOCONT0); 901 902 /* DRAM init */ 903 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD); 904 outreg(dram_ctrl, GC_DCTL_SETTIME1_EMODE, GC_EVB_DCTL_SETTIME1_EMODE); 905 outreg(dram_ctrl, GC_DCTL_REFRESH_SETTIME2, 906 GC_EVB_DCTL_REFRESH_SETTIME2); 907 outreg(dram_ctrl, GC_DCTL_RSV2_RSV1, GC_EVB_DCTL_RSV2_RSV1); 908 outreg(dram_ctrl, GC_DCTL_DDRIF2_DDRIF1, GC_EVB_DCTL_DDRIF2_DDRIF1); 909 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES); 910 911 /* DLL reset done? */ 912 while ((inreg(dram_ctrl, GC_DCTL_RSV0_STATES) & GC_DCTL_STATES_MSK)) { 913 udelay(GC_DCTL_INIT_WAIT_INTERVAL); 914 if (i++ > GC_DCTL_INIT_WAIT_CNT) { 915 dev_err(par->dev, "VRAM init failed.\n"); 916 return -EINVAL; 917 } 918 } 919 outreg(dram_ctrl, GC_DCTL_MODE_ADD, GC_EVB_DCTL_MODE_ADD_AFT_RST); 920 outreg(dram_ctrl, GC_DCTL_RSV0_STATES, GC_EVB_DCTL_RSV0_STATES_AFT_RST); 921 return 0; 922 } 923 924 static int carmine_init(struct mb862xxfb_par *par) 925 { 926 unsigned long reg; 927 928 par->ctrl = par->mmio_base + MB86297_CTRL_BASE; 929 par->i2c = par->mmio_base + MB86297_I2C_BASE; 930 par->disp = par->mmio_base + MB86297_DISP0_BASE; 931 par->disp1 = par->mmio_base + MB86297_DISP1_BASE; 932 par->cap = par->mmio_base + MB86297_CAP0_BASE; 933 par->cap1 = par->mmio_base + MB86297_CAP1_BASE; 934 par->draw = par->mmio_base + MB86297_DRAW_BASE; 935 par->dram_ctrl = par->mmio_base + MB86297_DRAMCTRL_BASE; 936 par->wrback = par->mmio_base + MB86297_WRBACK_BASE; 937 938 par->refclk = GC_DISP_REFCLK_533; 939 940 /* warm up */ 941 reg = GC_CTRL_CLK_EN_DRAM | GC_CTRL_CLK_EN_2D3D | GC_CTRL_CLK_EN_DISP0; 942 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg); 943 944 /* check for engine module revision */ 945 if (inreg(draw, GC_2D3D_REV) == GC_RE_REVISION) 946 dev_info(par->dev, "Fujitsu Carmine GDC Rev.%d found\n", 947 par->pdev->revision); 948 else 949 goto err_init; 950 951 reg &= ~GC_CTRL_CLK_EN_2D3D; 952 outreg(ctrl, GC_CTRL_CLK_ENABLE, reg); 953 954 /* set up vram */ 955 if (init_dram_ctrl(par) < 0) 956 goto err_init; 957 958 outreg(ctrl, GC_CTRL_INT_MASK, 0); 959 return 0; 960 961 err_init: 962 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0); 963 return -EINVAL; 964 } 965 966 static inline int mb862xx_pci_gdc_init(struct mb862xxfb_par *par) 967 { 968 switch (par->type) { 969 case BT_CORALP: 970 return coralp_init(par); 971 case BT_CARMINE: 972 return carmine_init(par); 973 default: 974 return -ENODEV; 975 } 976 } 977 978 #define CHIP_ID(id) \ 979 { PCI_DEVICE(PCI_VENDOR_ID_FUJITSU_LIMITED, id) } 980 981 static const struct pci_device_id mb862xx_pci_tbl[] = { 982 /* MB86295/MB86296 */ 983 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALP), 984 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CORALPA), 985 /* MB86297 */ 986 CHIP_ID(PCI_DEVICE_ID_FUJITSU_CARMINE), 987 { 0, } 988 }; 989 990 MODULE_DEVICE_TABLE(pci, mb862xx_pci_tbl); 991 992 static int mb862xx_pci_probe(struct pci_dev *pdev, 993 const struct pci_device_id *ent) 994 { 995 struct mb862xxfb_par *par; 996 struct fb_info *info; 997 struct device *dev = &pdev->dev; 998 int ret; 999 1000 ret = pci_enable_device(pdev); 1001 if (ret < 0) { 1002 dev_err(dev, "Cannot enable PCI device\n"); 1003 goto out; 1004 } 1005 1006 info = framebuffer_alloc(sizeof(struct mb862xxfb_par), dev); 1007 if (!info) { 1008 dev_err(dev, "framebuffer alloc failed\n"); 1009 ret = -ENOMEM; 1010 goto dis_dev; 1011 } 1012 1013 par = info->par; 1014 par->info = info; 1015 par->dev = dev; 1016 par->pdev = pdev; 1017 par->irq = pdev->irq; 1018 1019 ret = pci_request_regions(pdev, DRV_NAME); 1020 if (ret < 0) { 1021 dev_err(dev, "Cannot reserve region(s) for PCI device\n"); 1022 goto rel_fb; 1023 } 1024 1025 switch (pdev->device) { 1026 case PCI_DEVICE_ID_FUJITSU_CORALP: 1027 case PCI_DEVICE_ID_FUJITSU_CORALPA: 1028 par->fb_base_phys = pci_resource_start(par->pdev, 0); 1029 par->mapped_vram = CORALP_MEM_SIZE; 1030 if (par->mapped_vram >= 0x2000000) { 1031 par->mmio_base_phys = par->fb_base_phys + 1032 MB862XX_MMIO_HIGH_BASE; 1033 } else { 1034 par->mmio_base_phys = par->fb_base_phys + 1035 MB862XX_MMIO_BASE; 1036 } 1037 par->mmio_len = MB862XX_MMIO_SIZE; 1038 par->type = BT_CORALP; 1039 break; 1040 case PCI_DEVICE_ID_FUJITSU_CARMINE: 1041 par->fb_base_phys = pci_resource_start(par->pdev, 2); 1042 par->mmio_base_phys = pci_resource_start(par->pdev, 3); 1043 par->mmio_len = pci_resource_len(par->pdev, 3); 1044 par->mapped_vram = CARMINE_MEM_SIZE; 1045 par->type = BT_CARMINE; 1046 break; 1047 default: 1048 /* should never occur */ 1049 ret = -EIO; 1050 goto rel_reg; 1051 } 1052 1053 par->fb_base = ioremap(par->fb_base_phys, par->mapped_vram); 1054 if (par->fb_base == NULL) { 1055 dev_err(dev, "Cannot map framebuffer\n"); 1056 ret = -EIO; 1057 goto rel_reg; 1058 } 1059 1060 par->mmio_base = ioremap(par->mmio_base_phys, par->mmio_len); 1061 if (par->mmio_base == NULL) { 1062 dev_err(dev, "Cannot map registers\n"); 1063 ret = -EIO; 1064 goto fb_unmap; 1065 } 1066 1067 dev_dbg(dev, "fb phys 0x%llx 0x%lx\n", 1068 (unsigned long long)par->fb_base_phys, (ulong)par->mapped_vram); 1069 dev_dbg(dev, "mmio phys 0x%llx 0x%lx\n", 1070 (unsigned long long)par->mmio_base_phys, (ulong)par->mmio_len); 1071 1072 ret = mb862xx_pci_gdc_init(par); 1073 if (ret) 1074 goto io_unmap; 1075 1076 ret = request_irq(par->irq, mb862xx_intr, IRQF_SHARED, 1077 DRV_NAME, (void *)par); 1078 if (ret) { 1079 dev_err(dev, "Cannot request irq\n"); 1080 goto io_unmap; 1081 } 1082 1083 mb862xxfb_init_fbinfo(info); 1084 1085 if (fb_alloc_cmap(&info->cmap, NR_PALETTE, 0) < 0) { 1086 dev_err(dev, "Could not allocate cmap for fb_info.\n"); 1087 ret = -ENOMEM; 1088 goto free_irq; 1089 } 1090 1091 if ((info->fbops->fb_set_par)(info)) 1092 dev_err(dev, "set_var() failed on initial setup?\n"); 1093 1094 ret = register_framebuffer(info); 1095 if (ret < 0) { 1096 dev_err(dev, "failed to register framebuffer\n"); 1097 goto rel_cmap; 1098 } 1099 1100 pci_set_drvdata(pdev, info); 1101 1102 if (device_create_file(dev, &dev_attr_dispregs)) 1103 dev_err(dev, "Can't create sysfs regdump file\n"); 1104 1105 if (par->type == BT_CARMINE) 1106 outreg(ctrl, GC_CTRL_INT_MASK, GC_CARMINE_INT_EN); 1107 else 1108 outreg(host, GC_IMASK, GC_INT_EN); 1109 1110 return 0; 1111 1112 rel_cmap: 1113 fb_dealloc_cmap(&info->cmap); 1114 free_irq: 1115 free_irq(par->irq, (void *)par); 1116 io_unmap: 1117 iounmap(par->mmio_base); 1118 fb_unmap: 1119 iounmap(par->fb_base); 1120 rel_reg: 1121 pci_release_regions(pdev); 1122 rel_fb: 1123 framebuffer_release(info); 1124 dis_dev: 1125 pci_disable_device(pdev); 1126 out: 1127 return ret; 1128 } 1129 1130 static void mb862xx_pci_remove(struct pci_dev *pdev) 1131 { 1132 struct fb_info *fbi = pci_get_drvdata(pdev); 1133 struct mb862xxfb_par *par = fbi->par; 1134 unsigned long reg; 1135 1136 dev_dbg(fbi->dev, "%s release\n", fbi->fix.id); 1137 1138 /* display off */ 1139 reg = inreg(disp, GC_DCM1); 1140 reg &= ~(GC_DCM01_DEN | GC_DCM01_L0E); 1141 outreg(disp, GC_DCM1, reg); 1142 1143 if (par->type == BT_CARMINE) { 1144 outreg(ctrl, GC_CTRL_INT_MASK, 0); 1145 outreg(ctrl, GC_CTRL_CLK_ENABLE, 0); 1146 } else { 1147 outreg(host, GC_IMASK, 0); 1148 } 1149 1150 mb862xx_i2c_exit(par); 1151 1152 device_remove_file(&pdev->dev, &dev_attr_dispregs); 1153 1154 unregister_framebuffer(fbi); 1155 fb_dealloc_cmap(&fbi->cmap); 1156 1157 free_irq(par->irq, (void *)par); 1158 iounmap(par->mmio_base); 1159 iounmap(par->fb_base); 1160 1161 pci_release_regions(pdev); 1162 framebuffer_release(fbi); 1163 pci_disable_device(pdev); 1164 } 1165 1166 static struct pci_driver mb862xxfb_pci_driver = { 1167 .name = DRV_NAME, 1168 .id_table = mb862xx_pci_tbl, 1169 .probe = mb862xx_pci_probe, 1170 .remove = mb862xx_pci_remove, 1171 }; 1172 #endif 1173 1174 static int mb862xxfb_init(void) 1175 { 1176 int ret = -ENODEV; 1177 1178 #if defined(CONFIG_FB_MB862XX_LIME) 1179 ret = platform_driver_register(&of_platform_mb862xxfb_driver); 1180 #endif 1181 #if defined(CONFIG_FB_MB862XX_PCI_GDC) 1182 ret = pci_register_driver(&mb862xxfb_pci_driver); 1183 #endif 1184 return ret; 1185 } 1186 1187 static void __exit mb862xxfb_exit(void) 1188 { 1189 #if defined(CONFIG_FB_MB862XX_LIME) 1190 platform_driver_unregister(&of_platform_mb862xxfb_driver); 1191 #endif 1192 #if defined(CONFIG_FB_MB862XX_PCI_GDC) 1193 pci_unregister_driver(&mb862xxfb_pci_driver); 1194 #endif 1195 } 1196 1197 module_init(mb862xxfb_init); 1198 module_exit(mb862xxfb_exit); 1199 1200 MODULE_DESCRIPTION("Fujitsu MB862xx Framebuffer driver"); 1201 MODULE_AUTHOR("Anatolij Gustschin <agust@denx.de>"); 1202 MODULE_LICENSE("GPL v2"); 1203