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/delay.h>
15 #include <linux/init.h>
18 #include <linux/of_device.h>
29 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
30 unsigned, struct fb_info *);
31 static int leo_blank(int, struct fb_info *);
33 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
34 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
35 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
38 * Frame buffer operations
41 static struct fb_ops leo_ops = {
43 .fb_setcolreg = leo_setcolreg,
44 .fb_blank = leo_blank,
45 .fb_pan_display = leo_pan_display,
46 .fb_fillrect = cfb_fillrect,
47 .fb_copyarea = cfb_copyarea,
48 .fb_imageblit = cfb_imageblit,
50 .fb_ioctl = leo_ioctl,
52 .fb_compat_ioctl = sbusfb_compat_ioctl,
56 #define LEO_OFF_LC_SS0_KRN 0x00200000UL
57 #define LEO_OFF_LC_SS0_USR 0x00201000UL
58 #define LEO_OFF_LC_SS1_KRN 0x01200000UL
59 #define LEO_OFF_LC_SS1_USR 0x01201000UL
60 #define LEO_OFF_LD_SS0 0x00400000UL
61 #define LEO_OFF_LD_SS1 0x01400000UL
62 #define LEO_OFF_LD_GBL 0x00401000UL
63 #define LEO_OFF_LX_KRN 0x00600000UL
64 #define LEO_OFF_LX_CURSOR 0x00601000UL
65 #define LEO_OFF_SS0 0x00800000UL
66 #define LEO_OFF_SS1 0x01800000UL
67 #define LEO_OFF_UNK 0x00602000UL
68 #define LEO_OFF_UNK2 0x00000000UL
70 #define LEO_CUR_ENABLE 0x00000080
71 #define LEO_CUR_UPDATE 0x00000030
72 #define LEO_CUR_PROGRESS 0x00000006
73 #define LEO_CUR_UPDATECMAP 0x00000003
75 #define LEO_CUR_TYPE_MASK 0x00000000
76 #define LEO_CUR_TYPE_IMAGE 0x00000020
77 #define LEO_CUR_TYPE_CMAP 0x00000050
87 #define LEO_KRN_TYPE_CLUT0 0x00001000
88 #define LEO_KRN_TYPE_CLUT1 0x00001001
89 #define LEO_KRN_TYPE_CLUT2 0x00001002
90 #define LEO_KRN_TYPE_WID 0x00001003
91 #define LEO_KRN_TYPE_UNK 0x00001006
92 #define LEO_KRN_TYPE_VIDEO 0x00002003
93 #define LEO_KRN_TYPE_CLUTDATA 0x00004000
94 #define LEO_KRN_CSR_ENABLE 0x00000008
95 #define LEO_KRN_CSR_PROGRESS 0x00000004
96 #define LEO_KRN_CSR_UNK 0x00000002
97 #define LEO_KRN_CSR_UNK2 0x00000001
105 struct leo_lc_ss0_krn {
111 struct leo_lc_ss0_usr {
123 struct leo_lc_ss1_krn {
127 struct leo_lc_ss1_usr {
139 u32 pickmin; /* SS1 only */
140 u32 pickmax; /* SS1 only */
143 u32 src; /* Copy/Scroll (SS0 only) */
144 u32 dst; /* Copy/Scroll/Fill (SS0 only) */
145 u32 extent; /* Copy/Scroll/Fill size (SS0 only) */
147 u32 setsem; /* SS1 only */
148 u32 clrsem; /* SS1 only */
149 u32 clrpick; /* SS1 only */
150 u32 clrdat; /* SS1 only */
151 u32 alpha; /* SS1 only */
157 u32 dczf; /* SS1 only */
158 u32 dczb; /* SS1 only */
159 u32 dcs; /* SS1 only */
160 u32 dczs; /* SS1 only */
161 u32 pickfb; /* SS1 only */
162 u32 pickbb; /* SS1 only */
163 u32 dcfc; /* SS1 only */
164 u32 forcecol; /* SS1 only */
165 u32 door[8]; /* SS1 only */
166 u32 pick[5]; /* SS1 only */
169 #define LEO_SS1_MISC_ENABLE 0x00000001
170 #define LEO_SS1_MISC_STEREO 0x00000002
182 struct leo_lx_krn __iomem *lx_krn;
183 struct leo_lc_ss0_usr __iomem *lc_ss0_usr;
184 struct leo_ld_ss0 __iomem *ld_ss0;
185 struct leo_ld_ss1 __iomem *ld_ss1;
186 struct leo_cursor __iomem *cursor;
191 #define LEO_FLAG_BLANKED 0x00000001
193 unsigned long which_io;
196 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
201 (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
204 udelay(1); /* Busy wait at most 0.3 sec */
208 static void leo_switch_from_graph(struct fb_info *info)
210 struct leo_par *par = (struct leo_par *) info->par;
211 struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
212 struct leo_cursor __iomem *cursor = par->cursor;
216 spin_lock_irqsave(&par->lock, flags);
218 par->extent = ((info->var.xres - 1) |
219 ((info->var.yres - 1) << 16));
221 sbus_writel(0xffffffff, &ss->wid);
222 sbus_writel(0xffff, &ss->wmask);
223 sbus_writel(0, &ss->vclipmin);
224 sbus_writel(par->extent, &ss->vclipmax);
225 sbus_writel(0, &ss->fg);
226 sbus_writel(0xff000000, &ss->planemask);
227 sbus_writel(0x310850, &ss->rop);
228 sbus_writel(0, &ss->widclip);
229 sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
230 &par->lc_ss0_usr->extent);
231 sbus_writel(4, &par->lc_ss0_usr->addrspace);
232 sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
233 sbus_writel(0, &par->lc_ss0_usr->fontt);
235 val = sbus_readl(&par->lc_ss0_usr->csr);
236 } while (val & 0x20000000);
238 /* setup screen buffer for cfb_* functions */
239 sbus_writel(1, &ss->wid);
240 sbus_writel(0x00ffffff, &ss->planemask);
241 sbus_writel(0x310b90, &ss->rop);
242 sbus_writel(0, &par->lc_ss0_usr->addrspace);
245 sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc);
247 spin_unlock_irqrestore(&par->lock, flags);
250 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
252 /* We just use this to catch switches out of
255 leo_switch_from_graph(info);
257 if (var->xoffset || var->yoffset || var->vmode)
263 * leo_setcolreg - Optional function. Sets a color register.
264 * @regno: boolean, 0 copy local, 1 get_user() function
265 * @red: frame buffer colormap structure
266 * @green: The green value which can be up to 16 bits wide
267 * @blue: The blue value which can be up to 16 bits wide.
268 * @transp: If supported the alpha value which can be up to 16 bits wide.
269 * @info: frame buffer info structure
271 static int leo_setcolreg(unsigned regno,
272 unsigned red, unsigned green, unsigned blue,
273 unsigned transp, struct fb_info *info)
275 struct leo_par *par = (struct leo_par *) info->par;
276 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
288 par->clut_data[regno] = red | (green << 8) | (blue << 16);
290 spin_lock_irqsave(&par->lock, flags);
294 sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
295 for (i = 0; i < 256; i++)
296 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
297 sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
299 val = sbus_readl(&lx_krn->krn_csr);
300 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
301 sbus_writel(val, &lx_krn->krn_csr);
303 spin_unlock_irqrestore(&par->lock, flags);
309 * leo_blank - Optional function. Blanks the display.
310 * @blank_mode: the blank mode we want.
311 * @info: frame buffer structure that represents a single frame buffer
313 static int leo_blank(int blank, struct fb_info *info)
315 struct leo_par *par = (struct leo_par *) info->par;
316 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
320 spin_lock_irqsave(&par->lock, flags);
323 case FB_BLANK_UNBLANK: /* Unblanking */
324 val = sbus_readl(&lx_krn->krn_csr);
325 val |= LEO_KRN_CSR_ENABLE;
326 sbus_writel(val, &lx_krn->krn_csr);
327 par->flags &= ~LEO_FLAG_BLANKED;
330 case FB_BLANK_NORMAL: /* Normal blanking */
331 case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
332 case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
333 case FB_BLANK_POWERDOWN: /* Poweroff */
334 val = sbus_readl(&lx_krn->krn_csr);
335 val &= ~LEO_KRN_CSR_ENABLE;
336 sbus_writel(val, &lx_krn->krn_csr);
337 par->flags |= LEO_FLAG_BLANKED;
341 spin_unlock_irqrestore(&par->lock, flags);
346 static struct sbus_mmap_map leo_mmap_map[] = {
353 .voff = LEO_LC_SS0_USR_MAP,
354 .poff = LEO_OFF_LC_SS0_USR,
358 .voff = LEO_LD_SS0_MAP,
359 .poff = LEO_OFF_LD_SS0,
363 .voff = LEO_LX_CURSOR_MAP,
364 .poff = LEO_OFF_LX_CURSOR,
373 .voff = LEO_LC_SS1_USR_MAP,
374 .poff = LEO_OFF_LC_SS1_USR,
378 .voff = LEO_LD_SS1_MAP,
379 .poff = LEO_OFF_LD_SS1,
388 .voff = LEO_LX_KRN_MAP,
389 .poff = LEO_OFF_LX_KRN,
393 .voff = LEO_LC_SS0_KRN_MAP,
394 .poff = LEO_OFF_LC_SS0_KRN,
398 .voff = LEO_LC_SS1_KRN_MAP,
399 .poff = LEO_OFF_LC_SS1_KRN,
403 .voff = LEO_LD_GBL_MAP,
404 .poff = LEO_OFF_LD_GBL,
408 .voff = LEO_UNK2_MAP,
409 .poff = LEO_OFF_UNK2,
415 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
417 struct leo_par *par = (struct leo_par *)info->par;
419 return sbusfb_mmap_helper(leo_mmap_map,
420 info->fix.smem_start, info->fix.smem_len,
424 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
426 return sbusfb_ioctl_helper(cmd, arg, info,
427 FBTYPE_SUNLEO, 32, info->fix.smem_len);
435 leo_init_fix(struct fb_info *info, struct device_node *dp)
437 strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
439 info->fix.type = FB_TYPE_PACKED_PIXELS;
440 info->fix.visual = FB_VISUAL_TRUECOLOR;
442 info->fix.line_length = 8192;
444 info->fix.accel = FB_ACCEL_SUN_LEO;
447 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
449 struct leo_par *par = (struct leo_par *) info->par;
450 struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
451 struct fb_wid_item *wi;
456 spin_lock_irqsave(&par->lock, flags);
460 for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
461 switch (wi->wi_type) {
463 j = (wi->wi_index & 0xf) + 0x40;
467 j = wi->wi_index & 0x3f;
473 sbus_writel(0x5800 + j, &lx_krn->krn_type);
474 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
476 sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
478 val = sbus_readl(&lx_krn->krn_csr);
479 val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
480 sbus_writel(val, &lx_krn->krn_csr);
482 spin_unlock_irqrestore(&par->lock, flags);
485 static void leo_init_wids(struct fb_info *info)
487 struct fb_wid_item wi;
488 struct fb_wid_list wl;
492 wi.wi_type = FB_WID_DBL_8;
494 wi.wi_values [0] = 0x2c0;
495 leo_wid_put(info, &wl);
497 wi.wi_values [0] = 0x30;
498 leo_wid_put(info, &wl);
500 wi.wi_values [0] = 0x20;
501 leo_wid_put(info, &wl);
502 wi.wi_type = FB_WID_DBL_24;
504 wi.wi_values [0] = 0x30;
505 leo_wid_put(info, &wl);
508 static void leo_init_hw(struct fb_info *info)
510 struct leo_par *par = (struct leo_par *) info->par;
513 val = sbus_readl(&par->ld_ss1->ss1_misc);
514 val |= LEO_SS1_MISC_ENABLE;
515 sbus_writel(val, &par->ld_ss1->ss1_misc);
517 leo_switch_from_graph(info);
520 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
524 var->green.offset = 8;
525 var->green.length = 8;
526 var->blue.offset = 16;
527 var->blue.length = 8;
528 var->transp.offset = 0;
529 var->transp.length = 0;
532 static void leo_unmap_regs(struct platform_device *op, struct fb_info *info,
536 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
538 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
540 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
542 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
544 of_iounmap(&op->resource[0],
545 par->cursor, sizeof(struct leo_cursor));
546 if (info->screen_base)
547 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
550 static int leo_probe(struct platform_device *op)
552 struct device_node *dp = op->dev.of_node;
553 struct fb_info *info;
557 info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
564 spin_lock_init(&par->lock);
566 info->fix.smem_start = op->resource[0].start;
567 par->which_io = op->resource[0].flags & IORESOURCE_BITS;
569 sbusfb_fill_var(&info->var, dp, 32);
570 leo_fixup_var_rgb(&info->var);
572 linebytes = of_getintprop_default(dp, "linebytes",
574 info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
577 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
578 0x1000, "leolc ss0usr");
580 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
581 0x1000, "leold ss0");
583 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
584 0x1000, "leold ss1");
586 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
587 0x1000, "leolx krn");
589 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
590 sizeof(struct leo_cursor), "leolx cursor");
592 of_ioremap(&op->resource[0], LEO_OFF_SS0,
593 0x800000, "leo ram");
594 if (!par->lc_ss0_usr ||
602 info->flags = FBINFO_DEFAULT;
603 info->fbops = &leo_ops;
604 info->pseudo_palette = par->clut_data;
609 leo_blank(FB_BLANK_UNBLANK, info);
611 if (fb_alloc_cmap(&info->cmap, 256, 0))
614 leo_init_fix(info, dp);
616 err = register_framebuffer(info);
618 goto out_dealloc_cmap;
620 dev_set_drvdata(&op->dev, info);
622 printk(KERN_INFO "%s: leo at %lx:%lx\n",
624 par->which_io, info->fix.smem_start);
629 fb_dealloc_cmap(&info->cmap);
632 leo_unmap_regs(op, info, par);
633 framebuffer_release(info);
639 static int leo_remove(struct platform_device *op)
641 struct fb_info *info = dev_get_drvdata(&op->dev);
642 struct leo_par *par = info->par;
644 unregister_framebuffer(info);
645 fb_dealloc_cmap(&info->cmap);
647 leo_unmap_regs(op, info, par);
649 framebuffer_release(info);
654 static const struct of_device_id leo_match[] = {
660 MODULE_DEVICE_TABLE(of, leo_match);
662 static struct platform_driver leo_driver = {
665 .owner = THIS_MODULE,
666 .of_match_table = leo_match,
669 .remove = leo_remove,
672 static int __init leo_init(void)
674 if (fb_get_options("leofb", NULL))
677 return platform_driver_register(&leo_driver);
680 static void __exit leo_exit(void)
682 platform_driver_unregister(&leo_driver);
685 module_init(leo_init);
686 module_exit(leo_exit);
688 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
689 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
690 MODULE_VERSION("2.0");
691 MODULE_LICENSE("GPL");