1 /* cg6.c: CGSIX (GX, GXplus, TGX) frame buffer driver
3 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
5 * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
6 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
8 * Driver layout based loosely on tgafb.c, see that file for credits.
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/errno.h>
14 #include <linux/string.h>
15 #include <linux/slab.h>
16 #include <linux/delay.h>
17 #include <linux/init.h>
20 #include <linux/of_device.h>
31 static int cg6_setcolreg(unsigned, unsigned, unsigned, unsigned,
32 unsigned, struct fb_info *);
33 static int cg6_blank(int, struct fb_info *);
35 static void cg6_imageblit(struct fb_info *, const struct fb_image *);
36 static void cg6_fillrect(struct fb_info *, const struct fb_fillrect *);
37 static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area);
38 static int cg6_sync(struct fb_info *);
39 static int cg6_mmap(struct fb_info *, struct vm_area_struct *);
40 static int cg6_ioctl(struct fb_info *, unsigned int, unsigned long);
41 static int cg6_pan_display(struct fb_var_screeninfo *, struct fb_info *);
44 * Frame buffer operations
47 static struct fb_ops cg6_ops = {
49 .fb_setcolreg = cg6_setcolreg,
50 .fb_blank = cg6_blank,
51 .fb_pan_display = cg6_pan_display,
52 .fb_fillrect = cg6_fillrect,
53 .fb_copyarea = cg6_copyarea,
54 .fb_imageblit = cg6_imageblit,
57 .fb_ioctl = cg6_ioctl,
59 .fb_compat_ioctl = sbusfb_compat_ioctl,
63 /* Offset of interesting structures in the OBIO space */
65 * Brooktree is the video dac and is funny to program on the cg6.
66 * (it's even funnier on the cg3)
67 * The FBC could be the frame buffer control
68 * The FHC could is the frame buffer hardware control.
70 #define CG6_ROM_OFFSET 0x0UL
71 #define CG6_BROOKTREE_OFFSET 0x200000UL
72 #define CG6_DHC_OFFSET 0x240000UL
73 #define CG6_ALT_OFFSET 0x280000UL
74 #define CG6_FHC_OFFSET 0x300000UL
75 #define CG6_THC_OFFSET 0x301000UL
76 #define CG6_FBC_OFFSET 0x700000UL
77 #define CG6_TEC_OFFSET 0x701000UL
78 #define CG6_RAM_OFFSET 0x800000UL
81 #define CG6_FHC_FBID_SHIFT 24
82 #define CG6_FHC_FBID_MASK 255
83 #define CG6_FHC_REV_SHIFT 20
84 #define CG6_FHC_REV_MASK 15
85 #define CG6_FHC_FROP_DISABLE (1 << 19)
86 #define CG6_FHC_ROW_DISABLE (1 << 18)
87 #define CG6_FHC_SRC_DISABLE (1 << 17)
88 #define CG6_FHC_DST_DISABLE (1 << 16)
89 #define CG6_FHC_RESET (1 << 15)
90 #define CG6_FHC_LITTLE_ENDIAN (1 << 13)
91 #define CG6_FHC_RES_MASK (3 << 11)
92 #define CG6_FHC_1024 (0 << 11)
93 #define CG6_FHC_1152 (1 << 11)
94 #define CG6_FHC_1280 (2 << 11)
95 #define CG6_FHC_1600 (3 << 11)
96 #define CG6_FHC_CPU_MASK (3 << 9)
97 #define CG6_FHC_CPU_SPARC (0 << 9)
98 #define CG6_FHC_CPU_68020 (1 << 9)
99 #define CG6_FHC_CPU_386 (2 << 9)
100 #define CG6_FHC_TEST (1 << 8)
101 #define CG6_FHC_TEST_X_SHIFT 4
102 #define CG6_FHC_TEST_X_MASK 15
103 #define CG6_FHC_TEST_Y_SHIFT 0
104 #define CG6_FHC_TEST_Y_MASK 15
106 /* FBC mode definitions */
107 #define CG6_FBC_BLIT_IGNORE 0x00000000
108 #define CG6_FBC_BLIT_NOSRC 0x00100000
109 #define CG6_FBC_BLIT_SRC 0x00200000
110 #define CG6_FBC_BLIT_ILLEGAL 0x00300000
111 #define CG6_FBC_BLIT_MASK 0x00300000
113 #define CG6_FBC_VBLANK 0x00080000
115 #define CG6_FBC_MODE_IGNORE 0x00000000
116 #define CG6_FBC_MODE_COLOR8 0x00020000
117 #define CG6_FBC_MODE_COLOR1 0x00040000
118 #define CG6_FBC_MODE_HRMONO 0x00060000
119 #define CG6_FBC_MODE_MASK 0x00060000
121 #define CG6_FBC_DRAW_IGNORE 0x00000000
122 #define CG6_FBC_DRAW_RENDER 0x00008000
123 #define CG6_FBC_DRAW_PICK 0x00010000
124 #define CG6_FBC_DRAW_ILLEGAL 0x00018000
125 #define CG6_FBC_DRAW_MASK 0x00018000
127 #define CG6_FBC_BWRITE0_IGNORE 0x00000000
128 #define CG6_FBC_BWRITE0_ENABLE 0x00002000
129 #define CG6_FBC_BWRITE0_DISABLE 0x00004000
130 #define CG6_FBC_BWRITE0_ILLEGAL 0x00006000
131 #define CG6_FBC_BWRITE0_MASK 0x00006000
133 #define CG6_FBC_BWRITE1_IGNORE 0x00000000
134 #define CG6_FBC_BWRITE1_ENABLE 0x00000800
135 #define CG6_FBC_BWRITE1_DISABLE 0x00001000
136 #define CG6_FBC_BWRITE1_ILLEGAL 0x00001800
137 #define CG6_FBC_BWRITE1_MASK 0x00001800
139 #define CG6_FBC_BREAD_IGNORE 0x00000000
140 #define CG6_FBC_BREAD_0 0x00000200
141 #define CG6_FBC_BREAD_1 0x00000400
142 #define CG6_FBC_BREAD_ILLEGAL 0x00000600
143 #define CG6_FBC_BREAD_MASK 0x00000600
145 #define CG6_FBC_BDISP_IGNORE 0x00000000
146 #define CG6_FBC_BDISP_0 0x00000080
147 #define CG6_FBC_BDISP_1 0x00000100
148 #define CG6_FBC_BDISP_ILLEGAL 0x00000180
149 #define CG6_FBC_BDISP_MASK 0x00000180
151 #define CG6_FBC_INDEX_MOD 0x00000040
152 #define CG6_FBC_INDEX_MASK 0x00000030
154 /* THC definitions */
155 #define CG6_THC_MISC_REV_SHIFT 16
156 #define CG6_THC_MISC_REV_MASK 15
157 #define CG6_THC_MISC_RESET (1 << 12)
158 #define CG6_THC_MISC_VIDEO (1 << 10)
159 #define CG6_THC_MISC_SYNC (1 << 9)
160 #define CG6_THC_MISC_VSYNC (1 << 8)
161 #define CG6_THC_MISC_SYNC_ENAB (1 << 7)
162 #define CG6_THC_MISC_CURS_RES (1 << 6)
163 #define CG6_THC_MISC_INT_ENAB (1 << 5)
164 #define CG6_THC_MISC_INT (1 << 4)
165 #define CG6_THC_MISC_INIT 0x9f
166 #define CG6_THC_CURSOFF ((65536-32) | ((65536-32) << 16))
168 /* The contents are unknown */
177 u32 thc_hs; /* hsync timing */
180 u32 thc_vs; /* vsync timing */
185 u32 thc_cursxy; /* cursor x,y position (16 bits each) */
186 u32 thc_cursmask[32]; /* cursor mask bits */
187 u32 thc_cursbits[32]; /* what to show where mask enabled */
200 u32 x0, y0, z0, color0;
201 u32 x1, y1, z1, color1;
202 u32 x2, y2, z2, color2;
203 u32 x3, y3, z3, color3;
208 u32 clipminx, clipminy;
210 u32 clipmaxx, clipmaxy;
221 u32 apointx, apointy, apointz;
223 u32 rpointx, rpointy, rpointz;
225 u32 pointr, pointg, pointb, pointa;
226 u32 alinex, aliney, alinez;
228 u32 rlinex, rliney, rlinez;
230 u32 liner, lineg, lineb, linea;
231 u32 atrix, atriy, atriz;
233 u32 rtrix, rtriy, rtriz;
235 u32 trir, trig, trib, tria;
236 u32 aquadx, aquady, aquadz;
238 u32 rquadx, rquady, rquadz;
240 u32 quadr, quadg, quadb, quada;
241 u32 arectx, arecty, arectz;
243 u32 rrectx, rrecty, rrectz;
245 u32 rectr, rectg, rectb, recta;
257 struct bt_regs __iomem *bt;
258 struct cg6_fbc __iomem *fbc;
259 struct cg6_thc __iomem *thc;
260 struct cg6_tec __iomem *tec;
264 #define CG6_FLAG_BLANKED 0x00000001
266 unsigned long which_io;
269 static int cg6_sync(struct fb_info *info)
271 struct cg6_par *par = (struct cg6_par *)info->par;
272 struct cg6_fbc __iomem *fbc = par->fbc;
276 if (!(sbus_readl(&fbc->s) & 0x10000000))
279 } while (--limit > 0);
284 static void cg6_switch_from_graph(struct cg6_par *par)
286 struct cg6_thc __iomem *thc = par->thc;
289 spin_lock_irqsave(&par->lock, flags);
291 /* Hide the cursor. */
292 sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
294 spin_unlock_irqrestore(&par->lock, flags);
297 static int cg6_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
299 struct cg6_par *par = (struct cg6_par *)info->par;
301 /* We just use this to catch switches out of
304 cg6_switch_from_graph(par);
306 if (var->xoffset || var->yoffset || var->vmode)
312 * cg6_fillrect - Draws a rectangle on the screen.
314 * @info: frame buffer structure that represents a single frame buffer
315 * @rect: structure defining the rectagle and operation.
317 static void cg6_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
319 struct cg6_par *par = (struct cg6_par *)info->par;
320 struct cg6_fbc __iomem *fbc = par->fbc;
324 /* CG6 doesn't handle ROP_XOR */
326 spin_lock_irqsave(&par->lock, flags);
330 sbus_writel(rect->color, &fbc->fg);
331 sbus_writel(~(u32)0, &fbc->pixelm);
332 sbus_writel(0xea80ff00, &fbc->alu);
333 sbus_writel(0, &fbc->s);
334 sbus_writel(0, &fbc->clip);
335 sbus_writel(~(u32)0, &fbc->pm);
336 sbus_writel(rect->dy, &fbc->arecty);
337 sbus_writel(rect->dx, &fbc->arectx);
338 sbus_writel(rect->dy + rect->height, &fbc->arecty);
339 sbus_writel(rect->dx + rect->width, &fbc->arectx);
341 val = sbus_readl(&fbc->draw);
342 } while (val < 0 && (val & 0x20000000));
343 spin_unlock_irqrestore(&par->lock, flags);
347 * cg6_copyarea - Copies one area of the screen to another area.
349 * @info: frame buffer structure that represents a single frame buffer
350 * @area: Structure providing the data to copy the framebuffer contents
351 * from one region to another.
353 * This drawing operation copies a rectangular area from one area of the
354 * screen to another area.
356 static void cg6_copyarea(struct fb_info *info, const struct fb_copyarea *area)
358 struct cg6_par *par = (struct cg6_par *)info->par;
359 struct cg6_fbc __iomem *fbc = par->fbc;
363 spin_lock_irqsave(&par->lock, flags);
367 sbus_writel(0xff, &fbc->fg);
368 sbus_writel(0x00, &fbc->bg);
369 sbus_writel(~0, &fbc->pixelm);
370 sbus_writel(0xe880cccc, &fbc->alu);
371 sbus_writel(0, &fbc->s);
372 sbus_writel(0, &fbc->clip);
374 sbus_writel(area->sy, &fbc->y0);
375 sbus_writel(area->sx, &fbc->x0);
376 sbus_writel(area->sy + area->height - 1, &fbc->y1);
377 sbus_writel(area->sx + area->width - 1, &fbc->x1);
378 sbus_writel(area->dy, &fbc->y2);
379 sbus_writel(area->dx, &fbc->x2);
380 sbus_writel(area->dy + area->height - 1, &fbc->y3);
381 sbus_writel(area->dx + area->width - 1, &fbc->x3);
383 i = sbus_readl(&fbc->blit);
384 } while (i < 0 && (i & 0x20000000));
385 spin_unlock_irqrestore(&par->lock, flags);
389 * cg6_imageblit - Copies a image from system memory to the screen.
391 * @info: frame buffer structure that represents a single frame buffer
392 * @image: structure defining the image.
394 static void cg6_imageblit(struct fb_info *info, const struct fb_image *image)
396 struct cg6_par *par = (struct cg6_par *)info->par;
397 struct cg6_fbc __iomem *fbc = par->fbc;
398 const u8 *data = image->data;
403 if (image->depth > 1) {
404 cfb_imageblit(info, image);
408 spin_lock_irqsave(&par->lock, flags);
412 sbus_writel(image->fg_color, &fbc->fg);
413 sbus_writel(image->bg_color, &fbc->bg);
414 sbus_writel(0x140000, &fbc->mode);
415 sbus_writel(0xe880fc30, &fbc->alu);
416 sbus_writel(~(u32)0, &fbc->pixelm);
417 sbus_writel(0, &fbc->s);
418 sbus_writel(0, &fbc->clip);
419 sbus_writel(0xff, &fbc->pm);
420 sbus_writel(32, &fbc->incx);
421 sbus_writel(0, &fbc->incy);
425 for (i = 0; i < image->height; i++) {
426 width = image->width;
428 while (width >= 32) {
431 sbus_writel(y, &fbc->y0);
432 sbus_writel(x, &fbc->x0);
433 sbus_writel(x + 32 - 1, &fbc->x1);
435 val = ((u32)data[0] << 24) |
436 ((u32)data[1] << 16) |
437 ((u32)data[2] << 8) |
439 sbus_writel(val, &fbc->font);
448 sbus_writel(y, &fbc->y0);
449 sbus_writel(x, &fbc->x0);
450 sbus_writel(x + width - 1, &fbc->x1);
452 val = (u32) data[0] << 24;
454 } else if (width <= 16) {
455 val = ((u32) data[0] << 24) |
456 ((u32) data[1] << 16);
459 val = ((u32) data[0] << 24) |
460 ((u32) data[1] << 16) |
461 ((u32) data[2] << 8);
464 sbus_writel(val, &fbc->font);
471 spin_unlock_irqrestore(&par->lock, flags);
475 * cg6_setcolreg - Sets a color register.
477 * @regno: boolean, 0 copy local, 1 get_user() function
478 * @red: frame buffer colormap structure
479 * @green: The green value which can be up to 16 bits wide
480 * @blue: The blue value which can be up to 16 bits wide.
481 * @transp: If supported the alpha value which can be up to 16 bits wide.
482 * @info: frame buffer info structure
484 static int cg6_setcolreg(unsigned regno,
485 unsigned red, unsigned green, unsigned blue,
486 unsigned transp, struct fb_info *info)
488 struct cg6_par *par = (struct cg6_par *)info->par;
489 struct bt_regs __iomem *bt = par->bt;
499 spin_lock_irqsave(&par->lock, flags);
501 sbus_writel((u32)regno << 24, &bt->addr);
502 sbus_writel((u32)red << 24, &bt->color_map);
503 sbus_writel((u32)green << 24, &bt->color_map);
504 sbus_writel((u32)blue << 24, &bt->color_map);
506 spin_unlock_irqrestore(&par->lock, flags);
512 * cg6_blank - Blanks the display.
514 * @blank_mode: the blank mode we want.
515 * @info: frame buffer structure that represents a single frame buffer
517 static int cg6_blank(int blank, struct fb_info *info)
519 struct cg6_par *par = (struct cg6_par *)info->par;
520 struct cg6_thc __iomem *thc = par->thc;
524 spin_lock_irqsave(&par->lock, flags);
525 val = sbus_readl(&thc->thc_misc);
528 case FB_BLANK_UNBLANK: /* Unblanking */
529 val |= CG6_THC_MISC_VIDEO;
530 par->flags &= ~CG6_FLAG_BLANKED;
533 case FB_BLANK_NORMAL: /* Normal blanking */
534 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
535 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
536 case FB_BLANK_POWERDOWN: /* Poweroff */
537 val &= ~CG6_THC_MISC_VIDEO;
538 par->flags |= CG6_FLAG_BLANKED;
542 sbus_writel(val, &thc->thc_misc);
543 spin_unlock_irqrestore(&par->lock, flags);
548 static struct sbus_mmap_map cg6_mmap_map[] = {
551 .poff = CG6_FBC_OFFSET,
556 .poff = CG6_TEC_OFFSET,
561 .poff = CG6_BROOKTREE_OFFSET,
566 .poff = CG6_FHC_OFFSET,
571 .poff = CG6_THC_OFFSET,
576 .poff = CG6_ROM_OFFSET,
581 .poff = CG6_RAM_OFFSET,
582 .size = SBUS_MMAP_FBSIZE(1)
586 .poff = CG6_DHC_OFFSET,
592 static int cg6_mmap(struct fb_info *info, struct vm_area_struct *vma)
594 struct cg6_par *par = (struct cg6_par *)info->par;
596 return sbusfb_mmap_helper(cg6_mmap_map,
597 info->fix.smem_start, info->fix.smem_len,
601 static int cg6_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
603 return sbusfb_ioctl_helper(cmd, arg, info,
604 FBTYPE_SUNFAST_COLOR, 8, info->fix.smem_len);
611 static void __devinit cg6_init_fix(struct fb_info *info, int linebytes)
613 struct cg6_par *par = (struct cg6_par *)info->par;
614 const char *cg6_cpu_name, *cg6_card_name;
617 conf = sbus_readl(par->fhc);
618 switch (conf & CG6_FHC_CPU_MASK) {
619 case CG6_FHC_CPU_SPARC:
620 cg6_cpu_name = "sparc";
622 case CG6_FHC_CPU_68020:
623 cg6_cpu_name = "68020";
626 cg6_cpu_name = "i386";
629 if (((conf >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK) >= 11) {
630 if (info->fix.smem_len <= 0x100000)
631 cg6_card_name = "TGX";
633 cg6_card_name = "TGX+";
635 if (info->fix.smem_len <= 0x100000)
636 cg6_card_name = "GX";
638 cg6_card_name = "GX+";
641 sprintf(info->fix.id, "%s %s", cg6_card_name, cg6_cpu_name);
642 info->fix.id[sizeof(info->fix.id) - 1] = 0;
644 info->fix.type = FB_TYPE_PACKED_PIXELS;
645 info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
647 info->fix.line_length = linebytes;
649 info->fix.accel = FB_ACCEL_SUN_CGSIX;
652 /* Initialize Brooktree DAC */
653 static void __devinit cg6_bt_init(struct cg6_par *par)
655 struct bt_regs __iomem *bt = par->bt;
657 sbus_writel(0x04 << 24, &bt->addr); /* color planes */
658 sbus_writel(0xff << 24, &bt->control);
659 sbus_writel(0x05 << 24, &bt->addr);
660 sbus_writel(0x00 << 24, &bt->control);
661 sbus_writel(0x06 << 24, &bt->addr); /* overlay plane */
662 sbus_writel(0x73 << 24, &bt->control);
663 sbus_writel(0x07 << 24, &bt->addr);
664 sbus_writel(0x00 << 24, &bt->control);
667 static void __devinit cg6_chip_init(struct fb_info *info)
669 struct cg6_par *par = (struct cg6_par *)info->par;
670 struct cg6_tec __iomem *tec = par->tec;
671 struct cg6_fbc __iomem *fbc = par->fbc;
672 struct cg6_thc __iomem *thc = par->thc;
676 /* Hide the cursor. */
677 sbus_writel(CG6_THC_CURSOFF, &thc->thc_cursxy);
679 /* Turn off stuff in the Transform Engine. */
680 sbus_writel(0, &tec->tec_matrix);
681 sbus_writel(0, &tec->tec_clip);
682 sbus_writel(0, &tec->tec_vdc);
684 /* Take care of bugs in old revisions. */
685 rev = (sbus_readl(par->fhc) >> CG6_FHC_REV_SHIFT) & CG6_FHC_REV_MASK;
687 conf = (sbus_readl(par->fhc) & CG6_FHC_RES_MASK) |
688 CG6_FHC_CPU_68020 | CG6_FHC_TEST |
689 (11 << CG6_FHC_TEST_X_SHIFT) |
690 (11 << CG6_FHC_TEST_Y_SHIFT);
692 conf |= CG6_FHC_DST_DISABLE;
693 sbus_writel(conf, par->fhc);
696 /* Set things in the FBC. Bad things appear to happen if we do
697 * back to back store/loads on the mode register, so copy it
699 mode = sbus_readl(&fbc->mode);
701 i = sbus_readl(&fbc->s);
702 } while (i & 0x10000000);
703 mode &= ~(CG6_FBC_BLIT_MASK | CG6_FBC_MODE_MASK |
704 CG6_FBC_DRAW_MASK | CG6_FBC_BWRITE0_MASK |
705 CG6_FBC_BWRITE1_MASK | CG6_FBC_BREAD_MASK |
707 mode |= (CG6_FBC_BLIT_SRC | CG6_FBC_MODE_COLOR8 |
708 CG6_FBC_DRAW_RENDER | CG6_FBC_BWRITE0_ENABLE |
709 CG6_FBC_BWRITE1_DISABLE | CG6_FBC_BREAD_0 |
711 sbus_writel(mode, &fbc->mode);
713 sbus_writel(0, &fbc->clip);
714 sbus_writel(0, &fbc->offx);
715 sbus_writel(0, &fbc->offy);
716 sbus_writel(0, &fbc->clipminx);
717 sbus_writel(0, &fbc->clipminy);
718 sbus_writel(info->var.xres - 1, &fbc->clipmaxx);
719 sbus_writel(info->var.yres - 1, &fbc->clipmaxy);
722 static void cg6_unmap_regs(struct of_device *op, struct fb_info *info,
726 of_iounmap(&op->resource[0], par->fbc, 4096);
728 of_iounmap(&op->resource[0], par->tec, sizeof(struct cg6_tec));
730 of_iounmap(&op->resource[0], par->thc, sizeof(struct cg6_thc));
732 of_iounmap(&op->resource[0], par->bt, sizeof(struct bt_regs));
734 of_iounmap(&op->resource[0], par->fhc, sizeof(u32));
736 if (info->screen_base)
737 of_iounmap(&op->resource[0], info->screen_base,
741 static int __devinit cg6_probe(struct of_device *op,
742 const struct of_device_id *match)
744 struct device_node *dp = op->node;
745 struct fb_info *info;
750 info = framebuffer_alloc(sizeof(struct cg6_par), &op->dev);
757 spin_lock_init(&par->lock);
759 info->fix.smem_start = op->resource[0].start;
760 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
762 sbusfb_fill_var(&info->var, dp, 8);
763 info->var.red.length = 8;
764 info->var.green.length = 8;
765 info->var.blue.length = 8;
767 linebytes = of_getintprop_default(dp, "linebytes",
769 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
771 dblbuf = of_getintprop_default(dp, "dblbuf", 0);
773 info->fix.smem_len *= 4;
775 par->fbc = of_ioremap(&op->resource[0], CG6_FBC_OFFSET,
777 par->tec = of_ioremap(&op->resource[0], CG6_TEC_OFFSET,
778 sizeof(struct cg6_tec), "cgsix tec");
779 par->thc = of_ioremap(&op->resource[0], CG6_THC_OFFSET,
780 sizeof(struct cg6_thc), "cgsix thc");
781 par->bt = of_ioremap(&op->resource[0], CG6_BROOKTREE_OFFSET,
782 sizeof(struct bt_regs), "cgsix dac");
783 par->fhc = of_ioremap(&op->resource[0], CG6_FHC_OFFSET,
784 sizeof(u32), "cgsix fhc");
786 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_IMAGEBLIT |
787 FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT |
789 info->fbops = &cg6_ops;
791 info->screen_base = of_ioremap(&op->resource[0], CG6_RAM_OFFSET,
792 info->fix.smem_len, "cgsix ram");
793 if (!par->fbc || !par->tec || !par->thc ||
794 !par->bt || !par->fhc || !info->screen_base)
797 info->var.accel_flags = FB_ACCELF_TEXT;
801 cg6_blank(FB_BLANK_UNBLANK, info);
803 if (fb_alloc_cmap(&info->cmap, 256, 0))
806 fb_set_cmap(&info->cmap, info);
807 cg6_init_fix(info, linebytes);
809 err = register_framebuffer(info);
811 goto out_dealloc_cmap;
813 dev_set_drvdata(&op->dev, info);
815 printk(KERN_INFO "%s: CGsix [%s] at %lx:%lx\n",
816 dp->full_name, info->fix.id,
817 par->which_io, info->fix.smem_start);
822 fb_dealloc_cmap(&info->cmap);
825 cg6_unmap_regs(op, info, par);
831 static int __devexit cg6_remove(struct of_device *op)
833 struct fb_info *info = dev_get_drvdata(&op->dev);
834 struct cg6_par *par = info->par;
836 unregister_framebuffer(info);
837 fb_dealloc_cmap(&info->cmap);
839 cg6_unmap_regs(op, info, par);
841 framebuffer_release(info);
843 dev_set_drvdata(&op->dev, NULL);
848 static const struct of_device_id cg6_match[] = {
857 MODULE_DEVICE_TABLE(of, cg6_match);
859 static struct of_platform_driver cg6_driver = {
861 .match_table = cg6_match,
863 .remove = __devexit_p(cg6_remove),
866 static int __init cg6_init(void)
868 if (fb_get_options("cg6fb", NULL))
871 return of_register_driver(&cg6_driver, &of_bus_type);
874 static void __exit cg6_exit(void)
876 of_unregister_driver(&cg6_driver);
879 module_init(cg6_init);
880 module_exit(cg6_exit);
882 MODULE_DESCRIPTION("framebuffer driver for CGsix chipsets");
883 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
884 MODULE_VERSION("2.0");
885 MODULE_LICENSE("GPL");