39 #define to_clcd(info)	container_of(info, struct clcd_fb, fb)
57 static inline void clcdfb_set_start(struct clcd_fb *fb)  in clcdfb_set_start()  argument
59 	unsigned long ustart = fb->fb.fix.smem_start;  in clcdfb_set_start()
62 	ustart += fb->fb.var.yoffset * fb->fb.fix.line_length;  in clcdfb_set_start()
63 	lstart = ustart + fb->fb.var.yres * fb->fb.fix.line_length / 2;  in clcdfb_set_start()
65 	writel(ustart, fb->regs + CLCD_UBAS);  in clcdfb_set_start()
66 	writel(lstart, fb->regs + CLCD_LBAS);  in clcdfb_set_start()
69 static void clcdfb_disable(struct clcd_fb *fb)  in clcdfb_disable()  argument
73 	if (fb->board->disable)  in clcdfb_disable()
74 		fb->board->disable(fb);  in clcdfb_disable()
76 	val = readl(fb->regs + fb->off_cntl);  in clcdfb_disable()
79 		writel(val, fb->regs + fb->off_cntl);  in clcdfb_disable()
85 		writel(val, fb->regs + fb->off_cntl);  in clcdfb_disable()
91 	if (fb->clk_enabled) {  in clcdfb_disable()
92 		fb->clk_enabled = false;  in clcdfb_disable()
93 		clk_disable(fb->clk);  in clcdfb_disable()
97 static void clcdfb_enable(struct clcd_fb *fb, u32 cntl)  in clcdfb_enable()  argument
102 	if (!fb->clk_enabled) {  in clcdfb_enable()
103 		fb->clk_enabled = true;  in clcdfb_enable()
104 		clk_enable(fb->clk);  in clcdfb_enable()
111 	writel(cntl, fb->regs + fb->off_cntl);  in clcdfb_enable()
119 	writel(cntl, fb->regs + fb->off_cntl);  in clcdfb_enable()
124 	if (fb->board->enable)  in clcdfb_enable()
125 		fb->board->enable(fb);  in clcdfb_enable()
129 clcdfb_set_bitfields(struct clcd_fb *fb, struct fb_var_screeninfo *var)  in clcdfb_set_bitfields()  argument
134 	if (fb->panel->caps && fb->board->caps)  in clcdfb_set_bitfields()
135 		caps = fb->panel->caps & fb->board->caps;  in clcdfb_set_bitfields()
138 		caps = fb->panel->cntl & CNTL_BGR ?  in clcdfb_set_bitfields()
145 	if (!(fb->panel->cntl & CNTL_LCDTFT))  in clcdfb_set_bitfields()
268 	struct clcd_fb *fb = to_clcd(info);  in clcdfb_check_var()  local
271 	if (fb->board->check)  in clcdfb_check_var()
272 		ret = fb->board->check(fb, var);  in clcdfb_check_var()
276 	    var->yres_virtual > fb->fb.fix.smem_len)  in clcdfb_check_var()
280 		ret = clcdfb_set_bitfields(fb, var);  in clcdfb_check_var()
287 	struct clcd_fb *fb = to_clcd(info);  in clcdfb_set_par()  local
290 	fb->fb.fix.line_length = fb->fb.var.xres_virtual *  in clcdfb_set_par()
291 				 fb->fb.var.bits_per_pixel / 8;  in clcdfb_set_par()
293 	if (fb->fb.var.bits_per_pixel <= 8)  in clcdfb_set_par()
294 		fb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;  in clcdfb_set_par()
296 		fb->fb.fix.visual = FB_VISUAL_TRUECOLOR;  in clcdfb_set_par()
298 	fb->board->decode(fb, &regs);  in clcdfb_set_par()
300 	clcdfb_disable(fb);  in clcdfb_set_par()
302 	writel(regs.tim0, fb->regs + CLCD_TIM0);  in clcdfb_set_par()
303 	writel(regs.tim1, fb->regs + CLCD_TIM1);  in clcdfb_set_par()
304 	writel(regs.tim2, fb->regs + CLCD_TIM2);  in clcdfb_set_par()
305 	writel(regs.tim3, fb->regs + CLCD_TIM3);  in clcdfb_set_par()
307 	clcdfb_set_start(fb);  in clcdfb_set_par()
309 	clk_set_rate(fb->clk, (1000000000 / regs.pixclock) * 1000);  in clcdfb_set_par()
311 	fb->clcd_cntl = regs.cntl;  in clcdfb_set_par()
313 	clcdfb_enable(fb, regs.cntl);  in clcdfb_set_par()
320 		readl(fb->regs + CLCD_TIM0), readl(fb->regs + CLCD_TIM1),  in clcdfb_set_par()
321 		readl(fb->regs + CLCD_TIM2), readl(fb->regs + CLCD_TIM3),  in clcdfb_set_par()
322 		readl(fb->regs + CLCD_UBAS), readl(fb->regs + CLCD_LBAS),  in clcdfb_set_par()
323 		readl(fb->regs + fb->off_ienb), readl(fb->regs + fb->off_cntl));  in clcdfb_set_par()
344 	struct clcd_fb *fb = to_clcd(info);  in clcdfb_setcolreg()  local
347 		fb->cmap[regno] = convert_bitfield(transp, &fb->fb.var.transp) |  in clcdfb_setcolreg()
348 				  convert_bitfield(blue, &fb->fb.var.blue) |  in clcdfb_setcolreg()
349 				  convert_bitfield(green, &fb->fb.var.green) |  in clcdfb_setcolreg()
350 				  convert_bitfield(red, &fb->fb.var.red);  in clcdfb_setcolreg()
352 	if (fb->fb.fix.visual == FB_VISUAL_PSEUDOCOLOR && regno < 256) {  in clcdfb_setcolreg()
364 		if (fb->clcd_cntl & CNTL_BEBO)  in clcdfb_setcolreg()
374 		val = readl(fb->regs + hw_reg) & mask;  in clcdfb_setcolreg()
375 		writel(val | newval, fb->regs + hw_reg);  in clcdfb_setcolreg()
393 	struct clcd_fb *fb = to_clcd(info);  in clcdfb_blank()  local
396 		clcdfb_disable(fb);  in clcdfb_blank()
398 		clcdfb_enable(fb, fb->clcd_cntl);  in clcdfb_blank()
406 	struct clcd_fb *fb = to_clcd(info);  in clcdfb_mmap()  local
413 	    fb->board->mmap)  in clcdfb_mmap()
414 		ret = fb->board->mmap(fb, vma);  in clcdfb_mmap()
431 static int clcdfb_register(struct clcd_fb *fb)  in clcdfb_register()  argument
439 	if (amba_manf(fb->dev) == 0x41 && amba_part(fb->dev) == 0x111) {  in clcdfb_register()
440 		fb->off_ienb = CLCD_PL111_IENB;  in clcdfb_register()
441 		fb->off_cntl = CLCD_PL111_CNTL;  in clcdfb_register()
444 		fb->off_ienb = CLCD_PL111_IENB;  in clcdfb_register()
445 		fb->off_cntl = CLCD_PL111_CNTL;  in clcdfb_register()
447 		fb->off_ienb = CLCD_PL110_IENB;  in clcdfb_register()
448 		fb->off_cntl = CLCD_PL110_CNTL;  in clcdfb_register()
452 	fb->clk = clk_get(&fb->dev->dev, NULL);  in clcdfb_register()
453 	if (IS_ERR(fb->clk)) {  in clcdfb_register()
454 		ret = PTR_ERR(fb->clk);  in clcdfb_register()
458 	ret = clk_prepare(fb->clk);  in clcdfb_register()
462 	fb->fb.device		= &fb->dev->dev;  in clcdfb_register()
464 	fb->fb.fix.mmio_start	= fb->dev->res.start;  in clcdfb_register()
465 	fb->fb.fix.mmio_len	= resource_size(&fb->dev->res);  in clcdfb_register()
467 	fb->regs = ioremap(fb->fb.fix.mmio_start, fb->fb.fix.mmio_len);  in clcdfb_register()
468 	if (!fb->regs) {  in clcdfb_register()
474 	fb->fb.fbops		= &clcdfb_ops;  in clcdfb_register()
475 	fb->fb.flags		= FBINFO_FLAG_DEFAULT;  in clcdfb_register()
476 	fb->fb.pseudo_palette	= fb->cmap;  in clcdfb_register()
478 	strncpy(fb->fb.fix.id, clcd_name, sizeof(fb->fb.fix.id));  in clcdfb_register()
479 	fb->fb.fix.type		= FB_TYPE_PACKED_PIXELS;  in clcdfb_register()
480 	fb->fb.fix.type_aux	= 0;  in clcdfb_register()
481 	fb->fb.fix.xpanstep	= 0;  in clcdfb_register()
482 	fb->fb.fix.ypanstep	= 0;  in clcdfb_register()
483 	fb->fb.fix.ywrapstep	= 0;  in clcdfb_register()
484 	fb->fb.fix.accel	= FB_ACCEL_NONE;  in clcdfb_register()
486 	fb->fb.var.xres		= fb->panel->mode.xres;  in clcdfb_register()
487 	fb->fb.var.yres		= fb->panel->mode.yres;  in clcdfb_register()
488 	fb->fb.var.xres_virtual	= fb->panel->mode.xres;  in clcdfb_register()
489 	fb->fb.var.yres_virtual	= fb->panel->mode.yres;  in clcdfb_register()
490 	fb->fb.var.bits_per_pixel = fb->panel->bpp;  in clcdfb_register()
491 	fb->fb.var.grayscale	= fb->panel->grayscale;  in clcdfb_register()
492 	fb->fb.var.pixclock	= fb->panel->mode.pixclock;  in clcdfb_register()
493 	fb->fb.var.left_margin	= fb->panel->mode.left_margin;  in clcdfb_register()
494 	fb->fb.var.right_margin	= fb->panel->mode.right_margin;  in clcdfb_register()
495 	fb->fb.var.upper_margin	= fb->panel->mode.upper_margin;  in clcdfb_register()
496 	fb->fb.var.lower_margin	= fb->panel->mode.lower_margin;  in clcdfb_register()
497 	fb->fb.var.hsync_len	= fb->panel->mode.hsync_len;  in clcdfb_register()
498 	fb->fb.var.vsync_len	= fb->panel->mode.vsync_len;  in clcdfb_register()
499 	fb->fb.var.sync		= fb->panel->mode.sync;  in clcdfb_register()
500 	fb->fb.var.vmode	= fb->panel->mode.vmode;  in clcdfb_register()
501 	fb->fb.var.activate	= FB_ACTIVATE_NOW;  in clcdfb_register()
502 	fb->fb.var.nonstd	= 0;  in clcdfb_register()
503 	fb->fb.var.height	= fb->panel->height;  in clcdfb_register()
504 	fb->fb.var.width	= fb->panel->width;  in clcdfb_register()
505 	fb->fb.var.accel_flags	= 0;  in clcdfb_register()
507 	fb->fb.monspecs.hfmin	= 0;  in clcdfb_register()
508 	fb->fb.monspecs.hfmax   = 100000;  in clcdfb_register()
509 	fb->fb.monspecs.vfmin	= 0;  in clcdfb_register()
510 	fb->fb.monspecs.vfmax	= 400;  in clcdfb_register()
511 	fb->fb.monspecs.dclkmin = 1000000;  in clcdfb_register()
512 	fb->fb.monspecs.dclkmax	= 100000000;  in clcdfb_register()
517 	clcdfb_set_bitfields(fb, &fb->fb.var);  in clcdfb_register()
522 	ret = fb_alloc_cmap(&fb->fb.cmap, 256, 0);  in clcdfb_register()
529 	writel(0, fb->regs + fb->off_ienb);  in clcdfb_register()
531 	fb_set_var(&fb->fb, &fb->fb.var);  in clcdfb_register()
533 	dev_info(&fb->dev->dev, "%s hardware, %s display\n",  in clcdfb_register()
534 	         fb->board->name, fb->panel->mode.name);  in clcdfb_register()
536 	ret = register_framebuffer(&fb->fb);  in clcdfb_register()
542 	fb_dealloc_cmap(&fb->fb.cmap);  in clcdfb_register()
544 	iounmap(fb->regs);  in clcdfb_register()
546 	clk_unprepare(fb->clk);  in clcdfb_register()
548 	clk_put(fb->clk);  in clcdfb_register()
611 static int clcdfb_of_init_tft_panel(struct clcd_fb *fb, u32 r0, u32 g0, u32 b0)  in clcdfb_of_init_tft_panel()  argument
630 	fb->panel->tim2 = TIM2_BCD | TIM2_IPC;  in clcdfb_of_init_tft_panel()
633 	fb->panel->cntl |= CNTL_LCDTFT | CNTL_LCDVCOMP(1);  in clcdfb_of_init_tft_panel()
635 	fb->panel->caps = 0;  in clcdfb_of_init_tft_panel()
638 	for (i = 0; i < ARRAY_SIZE(panels) && !fb->panel->caps; i++) {  in clcdfb_of_init_tft_panel()
639 		if (amba_part(fb->dev) != panels[i].part)  in clcdfb_of_init_tft_panel()
644 			fb->panel->caps = panels[i].caps;  in clcdfb_of_init_tft_panel()
647 	return fb->panel->caps ? 0 : -EINVAL;  in clcdfb_of_init_tft_panel()
650 static int clcdfb_of_init_display(struct clcd_fb *fb)  in clcdfb_of_init_display()  argument
658 	fb->panel = devm_kzalloc(&fb->dev->dev, sizeof(*fb->panel), GFP_KERNEL);  in clcdfb_of_init_display()
659 	if (!fb->panel)  in clcdfb_of_init_display()
662 	endpoint = of_graph_get_next_endpoint(fb->dev->dev.of_node, NULL);  in clcdfb_of_init_display()
666 	err = clcdfb_of_get_mode(&fb->dev->dev, endpoint, &fb->panel->mode);  in clcdfb_of_init_display()
670 	err = of_property_read_u32(fb->dev->dev.of_node, "max-memory-bandwidth",  in clcdfb_of_init_display()
681 			/ PICOS2KHZ(fb->panel->mode.pixclock);  in clcdfb_of_init_display()
687 	fb->panel->bpp = bpp;  in clcdfb_of_init_display()
690 	fb->panel->cntl |= CNTL_BEBO;  in clcdfb_of_init_display()
692 	fb->panel->width = -1;  in clcdfb_of_init_display()
693 	fb->panel->height = -1;  in clcdfb_of_init_display()
698 		return clcdfb_of_init_tft_panel(fb, tft_r0b0g0[0],  in clcdfb_of_init_display()
704 static int clcdfb_of_vram_setup(struct clcd_fb *fb)  in clcdfb_of_vram_setup()  argument
710 	err = clcdfb_of_init_display(fb);  in clcdfb_of_vram_setup()
714 	memory = of_parse_phandle(fb->dev->dev.of_node, "memory-region", 0);  in clcdfb_of_vram_setup()
718 	fb->fb.screen_base = of_iomap(memory, 0);  in clcdfb_of_vram_setup()
719 	if (!fb->fb.screen_base)  in clcdfb_of_vram_setup()
722 	fb->fb.fix.smem_start = of_translate_address(memory,  in clcdfb_of_vram_setup()
724 	fb->fb.fix.smem_len = size;  in clcdfb_of_vram_setup()
729 static int clcdfb_of_vram_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)  in clcdfb_of_vram_mmap()  argument
736 	kernel_size = fb->fb.fix.smem_len;  in clcdfb_of_vram_mmap()
742 			__phys_to_pfn(fb->fb.fix.smem_start) + vma->vm_pgoff,  in clcdfb_of_vram_mmap()
747 static void clcdfb_of_vram_remove(struct clcd_fb *fb)  in clcdfb_of_vram_remove()  argument
749 	iounmap(fb->fb.screen_base);  in clcdfb_of_vram_remove()
752 static int clcdfb_of_dma_setup(struct clcd_fb *fb)  in clcdfb_of_dma_setup()  argument
758 	err = clcdfb_of_init_display(fb);  in clcdfb_of_dma_setup()
762 	framesize = PAGE_ALIGN(fb->panel->mode.xres * fb->panel->mode.yres *  in clcdfb_of_dma_setup()
763 			fb->panel->bpp / 8);  in clcdfb_of_dma_setup()
764 	fb->fb.screen_base = dma_alloc_coherent(&fb->dev->dev, framesize,  in clcdfb_of_dma_setup()
766 	if (!fb->fb.screen_base)  in clcdfb_of_dma_setup()
769 	fb->fb.fix.smem_start = dma;  in clcdfb_of_dma_setup()
770 	fb->fb.fix.smem_len = framesize;  in clcdfb_of_dma_setup()
775 static int clcdfb_of_dma_mmap(struct clcd_fb *fb, struct vm_area_struct *vma)  in clcdfb_of_dma_mmap()  argument
777 	return dma_mmap_writecombine(&fb->dev->dev, vma, fb->fb.screen_base,  in clcdfb_of_dma_mmap()
778 			fb->fb.fix.smem_start, fb->fb.fix.smem_len);  in clcdfb_of_dma_mmap()
781 static void clcdfb_of_dma_remove(struct clcd_fb *fb)  in clcdfb_of_dma_remove()  argument
783 	dma_free_coherent(&fb->dev->dev, fb->fb.fix.smem_len,  in clcdfb_of_dma_remove()
784 			fb->fb.screen_base, fb->fb.fix.smem_start);  in clcdfb_of_dma_remove()
822 	struct clcd_fb *fb;  in clcdfb_probe()  local
841 	fb = kzalloc(sizeof(struct clcd_fb), GFP_KERNEL);  in clcdfb_probe()
842 	if (!fb) {  in clcdfb_probe()
848 	fb->dev = dev;  in clcdfb_probe()
849 	fb->board = board;  in clcdfb_probe()
851 	dev_info(&fb->dev->dev, "PL%03x rev%u at 0x%08llx\n",  in clcdfb_probe()
855 	ret = fb->board->setup(fb);  in clcdfb_probe()
859 	ret = clcdfb_register(fb);   in clcdfb_probe()
861 		amba_set_drvdata(dev, fb);  in clcdfb_probe()
865 	fb->board->remove(fb);  in clcdfb_probe()
867 	kfree(fb);  in clcdfb_probe()
876 	struct clcd_fb *fb = amba_get_drvdata(dev);  in clcdfb_remove()  local
878 	clcdfb_disable(fb);  in clcdfb_remove()
879 	unregister_framebuffer(&fb->fb);  in clcdfb_remove()
880 	if (fb->fb.cmap.len)  in clcdfb_remove()
881 		fb_dealloc_cmap(&fb->fb.cmap);  in clcdfb_remove()
882 	iounmap(fb->regs);  in clcdfb_remove()
883 	clk_unprepare(fb->clk);  in clcdfb_remove()
884 	clk_put(fb->clk);  in clcdfb_remove()
886 	fb->board->remove(fb);  in clcdfb_remove()
888 	kfree(fb);  in clcdfb_remove()