1 /* leo.c: LEO frame buffer driver
3 * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
4 * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
5 * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
7 * Driver layout based loosely on tgafb.c, see that file for credits.
10 #include <linux/module.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/string.h>
14 #include <linux/slab.h>
15 #include <linux/delay.h>
16 #include <linux/init.h>
19 #include <linux/of_device.h>
30 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
31 unsigned, struct fb_info *);
32 static int leo_blank(int, struct fb_info *);
34 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
35 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
36 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
39 * Frame buffer operations
42 static struct fb_ops leo_ops = {
44 .fb_setcolreg = leo_setcolreg,
45 .fb_blank = leo_blank,
46 .fb_pan_display = leo_pan_display,
47 .fb_fillrect = cfb_fillrect,
48 .fb_copyarea = cfb_copyarea,
49 .fb_imageblit = cfb_imageblit,
51 .fb_ioctl = leo_ioctl,
53 .fb_compat_ioctl = sbusfb_compat_ioctl,
57 #define LEO_OFF_LC_SS0_KRN 0x00200000UL
58 #define LEO_OFF_LC_SS0_USR 0x00201000UL
59 #define LEO_OFF_LC_SS1_KRN 0x01200000UL
60 #define LEO_OFF_LC_SS1_USR 0x01201000UL
61 #define LEO_OFF_LD_SS0 0x00400000UL
62 #define LEO_OFF_LD_SS1 0x01400000UL
63 #define LEO_OFF_LD_GBL 0x00401000UL
64 #define LEO_OFF_LX_KRN 0x00600000UL
65 #define LEO_OFF_LX_CURSOR 0x00601000UL
66 #define LEO_OFF_SS0 0x00800000UL
67 #define LEO_OFF_SS1 0x01800000UL
68 #define LEO_OFF_UNK 0x00602000UL
69 #define LEO_OFF_UNK2 0x00000000UL
71 #define LEO_CUR_ENABLE 0x00000080
72 #define LEO_CUR_UPDATE 0x00000030
73 #define LEO_CUR_PROGRESS 0x00000006
74 #define LEO_CUR_UPDATECMAP 0x00000003
76 #define LEO_CUR_TYPE_MASK 0x00000000
77 #define LEO_CUR_TYPE_IMAGE 0x00000020
78 #define LEO_CUR_TYPE_CMAP 0x00000050
88 #define LEO_KRN_TYPE_CLUT0 0x00001000
89 #define LEO_KRN_TYPE_CLUT1 0x00001001
90 #define LEO_KRN_TYPE_CLUT2 0x00001002
91 #define LEO_KRN_TYPE_WID 0x00001003
92 #define LEO_KRN_TYPE_UNK 0x00001006
93 #define LEO_KRN_TYPE_VIDEO 0x00002003
94 #define LEO_KRN_TYPE_CLUTDATA 0x00004000
95 #define LEO_KRN_CSR_ENABLE 0x00000008
96 #define LEO_KRN_CSR_PROGRESS 0x00000004
97 #define LEO_KRN_CSR_UNK 0x00000002
98 #define LEO_KRN_CSR_UNK2 0x00000001
106 struct leo_lc_ss0_krn {
112 struct leo_lc_ss0_usr {
124 struct leo_lc_ss1_krn {
128 struct leo_lc_ss1_usr {
140 u32 pickmin; /* SS1 only */
141 u32 pickmax; /* SS1 only */
144 u32 src; /* Copy/Scroll (SS0 only) */
145 u32 dst; /* Copy/Scroll/Fill (SS0 only) */
146 u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
148 u32 setsem; /* SS1 only */
149 u32 clrsem; /* SS1 only */
150 u32 clrpick; /* SS1 only */
151 u32 clrdat; /* SS1 only */
152 u32 alpha; /* SS1 only */
158 u32 dczf; /* SS1 only */
159 u32 dczb; /* SS1 only */
160 u32 dcs; /* SS1 only */
161 u32 dczs; /* SS1 only */
162 u32 pickfb; /* SS1 only */
163 u32 pickbb; /* SS1 only */
164 u32 dcfc; /* SS1 only */
165 u32 forcecol; /* SS1 only */
166 u32 door[8]; /* SS1 only */
167 u32 pick[5]; /* SS1 only */
170 #define LEO_SS1_MISC_ENABLE 0x00000001
171 #define LEO_SS1_MISC_STEREO 0x00000002
183 struct leo_lx_krn __iomem *lx_krn;
184 struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
185 struct leo_ld_ss0 __iomem *ld_ss0;
186 struct leo_ld_ss1 __iomem *ld_ss1;
187 struct leo_cursor __iomem *cursor;
192 #define LEO_FLAG_BLANKED 0x00000001
194 unsigned long which_io;
197 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
202 (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
205 udelay(1); /* Busy wait at most 0.3 sec */
209 static void leo_switch_from_graph(struct fb_info *info)
211 struct leo_par *par = (struct leo_par *) info->par;
212 struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
213 struct leo_cursor __iomem *cursor = par->cursor;
217 spin_lock_irqsave(&par->lock, flags);
219 par->extent = ((info->var.xres - 1) |
220 ((info->var.yres - 1) << 16));
222 sbus_writel(0xffffffff, &ss->wid);
223 sbus_writel(0xffff, &ss->wmask);
224 sbus_writel(0, &ss->vclipmin);
225 sbus_writel(par->extent, &ss->vclipmax);
226 sbus_writel(0, &ss->fg);
227 sbus_writel(0xff000000, &ss->planemask);
228 sbus_writel(0x310850, &ss->rop);
229 sbus_writel(0, &ss->widclip);
230 sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
231 &par->lc_ss0_usr->extent);
232 sbus_writel(4, &par->lc_ss0_usr->addrspace);
233 sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
234 sbus_writel(0, &par->lc_ss0_usr->fontt);
236 val = sbus_readl(&par->lc_ss0_usr->csr);
237 } while (val & 0x20000000);
239 /* setup screen buffer for cfb_* functions */
240 sbus_writel(1, &ss->wid);
241 sbus_writel(0x00ffffff, &ss->planemask);
242 sbus_writel(0x310b90, &ss->rop);
243 sbus_writel(0, &par->lc_ss0_usr->addrspace);
246 sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc);
248 spin_unlock_irqrestore(&par->lock, flags);
251 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
253 /* We just use this to catch switches out of
256 leo_switch_from_graph(info);
258 if (var->xoffset || var->yoffset || var->vmode)
264 * leo_setcolreg - Optional function. Sets a color register.
265 * @regno: boolean, 0 copy local, 1 get_user() function
266 * @red: frame buffer colormap structure
267 * @green: The green value which can be up to 16 bits wide
268 * @blue: The blue value which can be up to 16 bits wide.
269 * @transp: If supported the alpha value which can be up to 16 bits wide.
270 * @info: frame buffer info structure
272 static int leo_setcolreg(unsigned regno,
273 unsigned red, unsigned green, unsigned blue,
274 unsigned transp, struct fb_info *info)
276 struct leo_par *par = (struct leo_par *) info->par;
277 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
289 par->clut_data[regno] = red | (green << 8) | (blue << 16);
291 spin_lock_irqsave(&par->lock, flags);
295 sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
296 for (i = 0; i < 256; i++)
297 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
298 sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
300 val = sbus_readl(&lx_krn->krn_csr);
301 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
302 sbus_writel(val, &lx_krn->krn_csr);
304 spin_unlock_irqrestore(&par->lock, flags);
310 * leo_blank - Optional function. Blanks the display.
311 * @blank_mode: the blank mode we want.
312 * @info: frame buffer structure that represents a single frame buffer
314 static int leo_blank(int blank, struct fb_info *info)
316 struct leo_par *par = (struct leo_par *) info->par;
317 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
321 spin_lock_irqsave(&par->lock, flags);
324 case FB_BLANK_UNBLANK: /* Unblanking */
325 val = sbus_readl(&lx_krn->krn_csr);
326 val |= LEO_KRN_CSR_ENABLE;
327 sbus_writel(val, &lx_krn->krn_csr);
328 par->flags &= ~LEO_FLAG_BLANKED;
331 case FB_BLANK_NORMAL: /* Normal blanking */
332 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
333 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
334 case FB_BLANK_POWERDOWN: /* Poweroff */
335 val = sbus_readl(&lx_krn->krn_csr);
336 val &= ~LEO_KRN_CSR_ENABLE;
337 sbus_writel(val, &lx_krn->krn_csr);
338 par->flags |= LEO_FLAG_BLANKED;
342 spin_unlock_irqrestore(&par->lock, flags);
347 static struct sbus_mmap_map leo_mmap_map[] = {
354 .voff = LEO_LC_SS0_USR_MAP,
355 .poff = LEO_OFF_LC_SS0_USR,
359 .voff = LEO_LD_SS0_MAP,
360 .poff = LEO_OFF_LD_SS0,
364 .voff = LEO_LX_CURSOR_MAP,
365 .poff = LEO_OFF_LX_CURSOR,
374 .voff = LEO_LC_SS1_USR_MAP,
375 .poff = LEO_OFF_LC_SS1_USR,
379 .voff = LEO_LD_SS1_MAP,
380 .poff = LEO_OFF_LD_SS1,
389 .voff = LEO_LX_KRN_MAP,
390 .poff = LEO_OFF_LX_KRN,
394 .voff = LEO_LC_SS0_KRN_MAP,
395 .poff = LEO_OFF_LC_SS0_KRN,
399 .voff = LEO_LC_SS1_KRN_MAP,
400 .poff = LEO_OFF_LC_SS1_KRN,
404 .voff = LEO_LD_GBL_MAP,
405 .poff = LEO_OFF_LD_GBL,
409 .voff = LEO_UNK2_MAP,
410 .poff = LEO_OFF_UNK2,
416 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
418 struct leo_par *par = (struct leo_par *)info->par;
420 return sbusfb_mmap_helper(leo_mmap_map,
421 info->fix.smem_start, info->fix.smem_len,
425 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
427 return sbusfb_ioctl_helper(cmd, arg, info,
428 FBTYPE_SUNLEO, 32, info->fix.smem_len);
436 leo_init_fix(struct fb_info *info, struct device_node *dp)
438 strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
440 info->fix.type = FB_TYPE_PACKED_PIXELS;
441 info->fix.visual = FB_VISUAL_TRUECOLOR;
443 info->fix.line_length = 8192;
445 info->fix.accel = FB_ACCEL_SUN_LEO;
448 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
450 struct leo_par *par = (struct leo_par *) info->par;
451 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
452 struct fb_wid_item *wi;
457 spin_lock_irqsave(&par->lock, flags);
461 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
462 switch (wi->wi_type) {
464 j = (wi->wi_index & 0xf) + 0x40;
468 j = wi->wi_index & 0x3f;
474 sbus_writel(0x5800 + j, &lx_krn->krn_type);
475 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
477 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
479 val = sbus_readl(&lx_krn->krn_csr);
480 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
481 sbus_writel(val, &lx_krn->krn_csr);
483 spin_unlock_irqrestore(&par->lock, flags);
486 static void leo_init_wids(struct fb_info *info)
488 struct fb_wid_item wi;
489 struct fb_wid_list wl;
493 wi.wi_type = FB_WID_DBL_8;
495 wi.wi_values [0] = 0x2c0;
496 leo_wid_put(info, &wl);
498 wi.wi_values [0] = 0x30;
499 leo_wid_put(info, &wl);
501 wi.wi_values [0] = 0x20;
502 leo_wid_put(info, &wl);
503 wi.wi_type = FB_WID_DBL_24;
505 wi.wi_values [0] = 0x30;
506 leo_wid_put(info, &wl);
509 static void leo_init_hw(struct fb_info *info)
511 struct leo_par *par = (struct leo_par *) info->par;
514 val = sbus_readl(&par->ld_ss1->ss1_misc);
515 val |= LEO_SS1_MISC_ENABLE;
516 sbus_writel(val, &par->ld_ss1->ss1_misc);
518 leo_switch_from_graph(info);
521 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
525 var->green.offset = 8;
526 var->green.length = 8;
527 var->blue.offset = 16;
528 var->blue.length = 8;
529 var->transp.offset = 0;
530 var->transp.length = 0;
533 static void leo_unmap_regs(struct of_device *op, struct fb_info *info,
537 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
539 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
541 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
543 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
545 of_iounmap(&op->resource[0],
546 par->cursor, sizeof(struct leo_cursor));
547 if (info->screen_base)
548 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
551 static int __devinit leo_probe(struct of_device *op,
552 const struct of_device_id *match)
554 struct device_node *dp = op->node;
555 struct fb_info *info;
559 info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
566 spin_lock_init(&par->lock);
568 info->fix.smem_start = op->resource[0].start;
569 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
571 sbusfb_fill_var(&info->var, dp, 32);
572 leo_fixup_var_rgb(&info->var);
574 linebytes = of_getintprop_default(dp, "linebytes",
576 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
579 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
580 0x1000, "leolc ss0usr");
582 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
583 0x1000, "leold ss0");
585 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
586 0x1000, "leold ss1");
588 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
589 0x1000, "leolx krn");
591 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
592 sizeof(struct leo_cursor), "leolx cursor");
594 of_ioremap(&op->resource[0], LEO_OFF_SS0,
595 0x800000, "leo ram");
596 if (!par->lc_ss0_usr ||
604 info->flags = FBINFO_DEFAULT;
605 info->fbops = &leo_ops;
606 info->pseudo_palette = par->clut_data;
611 leo_blank(FB_BLANK_UNBLANK, info);
613 if (fb_alloc_cmap(&info->cmap, 256, 0))
616 leo_init_fix(info, dp);
618 err = register_framebuffer(info);
620 goto out_dealloc_cmap;
622 dev_set_drvdata(&op->dev, info);
624 printk(KERN_INFO "%s: leo at %lx:%lx\n",
626 par->which_io, info->fix.smem_start);
631 fb_dealloc_cmap(&info->cmap);
634 leo_unmap_regs(op, info, par);
635 framebuffer_release(info);
641 static int __devexit leo_remove(struct of_device *op)
643 struct fb_info *info = dev_get_drvdata(&op->dev);
644 struct leo_par *par = info->par;
646 unregister_framebuffer(info);
647 fb_dealloc_cmap(&info->cmap);
649 leo_unmap_regs(op, info, par);
651 framebuffer_release(info);
653 dev_set_drvdata(&op->dev, NULL);
658 static const struct of_device_id leo_match[] = {
664 MODULE_DEVICE_TABLE(of, leo_match);
666 static struct of_platform_driver leo_driver = {
668 .match_table = leo_match,
670 .remove = __devexit_p(leo_remove),
673 static int __init leo_init(void)
675 if (fb_get_options("leofb", NULL))
678 return of_register_driver(&leo_driver, &of_bus_type);
681 static void __exit leo_exit(void)
683 of_unregister_driver(&leo_driver);
686 module_init(leo_init);
687 module_exit(leo_exit);
689 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
690 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
691 MODULE_VERSION("2.0");
692 MODULE_LICENSE("GPL");