1 // SPDX-License-Identifier: GPL-2.0-only
8  * Driver layout based loosely on tgafb.c, see that file for credits.
117 	u16 hss;	/* Hor Sync Start */
118 	u16 hsc;	/* Hor Sync Clear */
119 	u16 csc;	/* Composite Sync Clear */
122 	u16 vss;	/* Vert Sync Start */
123 	u16 vsc;	/* Vert Sync Clear */
177  * go to John Stone (johns@umr.edu) from OpenBSD), red, green and blue
209 	struct cg14_regs __iomem *regs = par->regs;  in __cg14_reset()
212 	val = sbus_readb(&regs->mcr);  in __cg14_reset()
214 	sbus_writeb(val, &regs->mcr);  in __cg14_reset()
219 	struct cg14_par *par = (struct cg14_par *) info->par;  in cg14_pan_display()
225 	spin_lock_irqsave(&par->lock, flags);  in cg14_pan_display()
227 	spin_unlock_irqrestore(&par->lock, flags);  in cg14_pan_display()
229 	if (var->xoffset || var->yoffset || var->vmode)  in cg14_pan_display()
230 		return -EINVAL;  in cg14_pan_display()
235  *      cg14_setcolreg - Optional function. Sets a color register.
238  *      @green: The green value which can be up to 16 bits wide
244 			  unsigned red, unsigned green, unsigned blue,  in cg14_setcolreg()  argument
247 	struct cg14_par *par = (struct cg14_par *) info->par;  in cg14_setcolreg()
248 	struct cg14_clut __iomem *clut = par->clut;  in cg14_setcolreg()
256 	green >>= 8;  in cg14_setcolreg()
258 	val = (red | (green << 8) | (blue << 16));  in cg14_setcolreg()
260 	spin_lock_irqsave(&par->lock, flags);  in cg14_setcolreg()
261 	sbus_writel(val, &clut->c_clut[regno]);  in cg14_setcolreg()
262 	spin_unlock_irqrestore(&par->lock, flags);  in cg14_setcolreg()
269 	struct cg14_par *par = (struct cg14_par *) info->par;  in cg14_mmap()
271 	return sbusfb_mmap_helper(par->mmap_map,  in cg14_mmap()
272 				  info->fix.smem_start, info->fix.smem_len,  in cg14_mmap()
273 				  par->iospace, vma);  in cg14_mmap()
278 	struct cg14_par *par = (struct cg14_par *) info->par;  in cg14_ioctl()
279 	struct cg14_regs __iomem *regs = par->regs;  in cg14_ioctl()
286 		spin_lock_irqsave(&par->lock, flags);  in cg14_ioctl()
288 		spin_unlock_irqrestore(&par->lock, flags);  in cg14_ioctl()
294 		spin_lock_irqsave(&par->lock, flags);  in cg14_ioctl()
296 		kmdi.mdi_height = info->var.yres;  in cg14_ioctl()
297 		kmdi.mdi_width = info->var.xres;  in cg14_ioctl()
298 		kmdi.mdi_mode = par->mode;  in cg14_ioctl()
300 		kmdi.mdi_size = par->ramsize;  in cg14_ioctl()
301 		spin_unlock_irqrestore(&par->lock, flags);  in cg14_ioctl()
305 			ret = -EFAULT;  in cg14_ioctl()
310 			ret = -EFAULT;  in cg14_ioctl()
314 		spin_lock_irqsave(&par->lock, flags);  in cg14_ioctl()
315 		cur_mode = sbus_readb(&regs->mcr);  in cg14_ioctl()
332 			ret = -ENOSYS;  in cg14_ioctl()
336 			sbus_writeb(cur_mode, &regs->mcr);  in cg14_ioctl()
337 			par->mode = mode;  in cg14_ioctl()
339 		spin_unlock_irqrestore(&par->lock, flags);  in cg14_ioctl()
345 					  info->fix.smem_len);  in cg14_ioctl()
359 	snprintf(info->fix.id, sizeof(info->fix.id), "%pOFn", dp);  in cg14_init_fix()
361 	info->fix.type = FB_TYPE_PACKED_PIXELS;  in cg14_init_fix()
362 	info->fix.visual = FB_VISUAL_PSEUDOCOLOR;  in cg14_init_fix()
364 	info->fix.line_length = linebytes;  in cg14_init_fix()
366 	info->fix.accel = FB_ACCEL_SUN_CG14;  in cg14_init_fix()
396 		.voff	= CG3_MMAP_OFFSET - 0x7000,
451 	if (par->regs)  in cg14_unmap_regs()
452 		of_iounmap(&op->resource[0],  in cg14_unmap_regs()
453 			   par->regs, sizeof(struct cg14_regs));  in cg14_unmap_regs()
454 	if (par->clut)  in cg14_unmap_regs()
455 		of_iounmap(&op->resource[0],  in cg14_unmap_regs()
456 			   par->clut, sizeof(struct cg14_clut));  in cg14_unmap_regs()
457 	if (par->cursor)  in cg14_unmap_regs()
458 		of_iounmap(&op->resource[0],  in cg14_unmap_regs()
459 			   par->cursor, sizeof(struct cg14_cursor));  in cg14_unmap_regs()
460 	if (info->screen_base)  in cg14_unmap_regs()
461 		of_iounmap(&op->resource[1],  in cg14_unmap_regs()
462 			   info->screen_base, info->fix.smem_len);  in cg14_unmap_regs()
467 	struct device_node *dp = op->dev.of_node;  in cg14_probe()
472 	info = framebuffer_alloc(sizeof(struct cg14_par), &op->dev);  in cg14_probe()
474 	err = -ENOMEM;  in cg14_probe()
477 	par = info->par;  in cg14_probe()
479 	spin_lock_init(&par->lock);  in cg14_probe()
481 	sbusfb_fill_var(&info->var, dp, 8);  in cg14_probe()
482 	info->var.red.length = 8;  in cg14_probe()
483 	info->var.green.length = 8;  in cg14_probe()
484 	info->var.blue.length = 8;  in cg14_probe()
487 					  info->var.xres);  in cg14_probe()
488 	info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);  in cg14_probe()
490 	if (of_node_name_eq(dp->parent, "sbus") ||  in cg14_probe()
491 	    of_node_name_eq(dp->parent, "sbi")) {  in cg14_probe()
492 		info->fix.smem_start = op->resource[0].start;  in cg14_probe()
493 		par->iospace = op->resource[0].flags & IORESOURCE_BITS;  in cg14_probe()
495 		info->fix.smem_start = op->resource[1].start;  in cg14_probe()
496 		par->iospace = op->resource[0].flags & IORESOURCE_BITS;  in cg14_probe()
499 	par->regs = of_ioremap(&op->resource[0], 0,  in cg14_probe()
501 	par->clut = of_ioremap(&op->resource[0], CG14_CLUT1,  in cg14_probe()
503 	par->cursor = of_ioremap(&op->resource[0], CG14_CURSORREGS,  in cg14_probe()
506 	info->screen_base = of_ioremap(&op->resource[1], 0,  in cg14_probe()
507 				       info->fix.smem_len, "cg14 ram");  in cg14_probe()
509 	if (!par->regs || !par->clut || !par->cursor || !info->screen_base)  in cg14_probe()
512 	is_8mb = (resource_size(&op->resource[1]) == (8 * 1024 * 1024));  in cg14_probe()
514 	BUILD_BUG_ON(sizeof(par->mmap_map) != sizeof(__cg14_mmap_map));  in cg14_probe()
516 	memcpy(&par->mmap_map, &__cg14_mmap_map, sizeof(par->mmap_map));  in cg14_probe()
519 		struct sbus_mmap_map *map = &par->mmap_map[i];  in cg14_probe()
521 		if (!map->size)  in cg14_probe()
523 		if (map->poff & 0x80000000)  in cg14_probe()
524 			map->poff = (map->poff & 0x7fffffff) +  in cg14_probe()
525 				(op->resource[0].start -  in cg14_probe()
526 				 op->resource[1].start);  in cg14_probe()
528 		    map->size >= 0x100000 &&  in cg14_probe()
529 		    map->size <= 0x400000)  in cg14_probe()
530 			map->size *= 2;  in cg14_probe()
533 	par->mode = MDI_8_PIX;  in cg14_probe()
534 	par->ramsize = (is_8mb ? 0x800000 : 0x400000);  in cg14_probe()
536 	info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;  in cg14_probe()
537 	info->fbops = &cg14_ops;  in cg14_probe()
541 	if (fb_alloc_cmap(&info->cmap, 256, 0))  in cg14_probe()
544 	fb_set_cmap(&info->cmap, info);  in cg14_probe()
552 	dev_set_drvdata(&op->dev, info);  in cg14_probe()
556 	       par->iospace, info->fix.smem_start,  in cg14_probe()
557 	       par->ramsize >> 20);  in cg14_probe()
562 	fb_dealloc_cmap(&info->cmap);  in cg14_probe()
574 	struct fb_info *info = dev_get_drvdata(&op->dev);  in cg14_remove()
575 	struct cg14_par *par = info->par;  in cg14_remove()
578 	fb_dealloc_cmap(&info->cmap);  in cg14_remove()
607 		return -ENODEV;  in cg14_init()