1 // SPDX-License-Identifier: GPL-2.0-or-later
15 #include <linux/dma-mapping.h>
20 #include <linux/soc/ti/omap1-io.h>
21 #include <linux/soc/ti/omap1-soc.h>
22 #include <linux/omap-dma.h>
24 #include <asm/mach-types.h>
135 		dev_err(lcdc.fbdev->dev, "timeout waiting for FRAME DONE\n");  in disable_controller()
146 		dev_err(lcdc.fbdev->dev,  in reset_controller()
155 		dev_err(lcdc.fbdev->dev,  in reset_controller()
161  * Configure the LCD DMA according to the current mode specified by parameters
162  * in lcdc.fbdev and fbdev->var.
173 	struct omapfb_plane_struct *plane = lcdc.fbdev->fb_info[0]->par;  in setup_lcd_dma()
174 	struct fb_var_screeninfo *var = &lcdc.fbdev->fb_info[0]->var;  in setup_lcd_dma()
180 	switch (var->rotate) {  in setup_lcd_dma()
182 		if (plane->info.mirror || (src & 3) ||  in setup_lcd_dma()
206 	dev_dbg(lcdc.fbdev->dev,  in setup_lcd_dma()
224 		omap_set_lcd_dma_b1_rotation(var->rotate);  in setup_lcd_dma()
225 		omap_set_lcd_dma_b1_mirror(plane->info.mirror);  in setup_lcd_dma()
275  * flicker and not to mess up the current LCD DMA context. For this we disable
285 	struct fb_var_screeninfo *var = &lcdc.fbdev->fb_info[0]->var;  in omap_lcdc_setup_plane()
286 	struct lcd_panel *panel = lcdc.fbdev->panel;  in omap_lcdc_setup_plane()
289 	if (var->rotate == 0) {  in omap_lcdc_setup_plane()
290 		rot_x = panel->x_res;  in omap_lcdc_setup_plane()
291 		rot_y = panel->y_res;  in omap_lcdc_setup_plane()
293 		rot_x = panel->y_res;  in omap_lcdc_setup_plane()
294 		rot_y = panel->x_res;  in omap_lcdc_setup_plane()
299 		dev_dbg(lcdc.fbdev->dev,  in omap_lcdc_setup_plane()
303 		return -EINVAL;  in omap_lcdc_setup_plane()
347 		dev_dbg(lcdc.fbdev->dev, "invalid color mode %d\n", color_mode);  in omap_lcdc_setup_plane()
349 		return -1;  in omap_lcdc_setup_plane()
369 	dev_dbg(lcdc.fbdev->dev,  in omap_lcdc_enable_plane()
373 		return -EINVAL;  in omap_lcdc_enable_plane()
404 		dev_err(lcdc.fbdev->dev, "timeout waiting for FRAME DONE\n");  in load_palette()
419 		return -EINVAL;  in omap_lcdc_setcolreg()
445 	*pck_div = (lck + pck - 1) / pck;  in calc_ck_div()
453 		dev_warn(lcdc.fbdev->dev, "pixclock %d kHz too low.\n",  in calc_ck_div()
461 	struct lcd_panel *panel = lcdc.fbdev->panel;  in setup_regs()
462 	int is_tft = panel->config & OMAP_LCDC_PANEL_TFT;  in setup_regs()
472 		l |= (is_tft && panel->bpp == 8) ? 0x810000 : 0;  in setup_regs()
478 	l &= ~(((1 << 6) - 1) << 20);  in setup_regs()
479 	l |= (panel->config & OMAP_LCDC_SIGNAL_MASK) << 20;  in setup_regs()
482 	l = panel->x_res - 1;  in setup_regs()
483 	l |= (panel->hsw - 1) << 10;  in setup_regs()
484 	l |= (panel->hfp - 1) << 16;  in setup_regs()
485 	l |= (panel->hbp - 1) << 24;  in setup_regs()
488 	l = panel->y_res - 1;  in setup_regs()
489 	l |= (panel->vsw - 1) << 10;  in setup_regs()
490 	l |= panel->vfp << 16;  in setup_regs()
491 	l |= panel->vbp << 24;  in setup_regs()
499 	if (!panel->pcd)  in setup_regs()
500 		calc_ck_div(is_tft, panel->pixel_clock * 1000, &pcd);  in setup_regs()
502 		dev_warn(lcdc.fbdev->dev,  in setup_regs()
506 			lck / panel->pcd / 1000, panel->name);  in setup_regs()
508 		pcd = panel->pcd;  in setup_regs()
511 	l |= panel->acb << 8;  in setup_regs()
515 	panel->pixel_clock = lck / pcd / 1000;  in setup_regs()
548 			r = -EINVAL;  in omap_lcdc_set_update_mode()
581 		return -EBUSY;  in omap_lcdc_set_dma_callback()
604 	lcdc.palette_virt = dma_alloc_wc(lcdc.fbdev->dev, MAX_PALETTE_SIZE,  in alloc_palette_ram()
607 		dev_err(lcdc.fbdev->dev, "failed to alloc palette memory\n");  in alloc_palette_ram()
608 		return -ENOMEM;  in alloc_palette_ram()
617 	dma_free_wc(lcdc.fbdev->dev, MAX_PALETTE_SIZE, lcdc.palette_virt,  in free_palette_ram()
625 	struct lcd_panel *panel = lcdc.fbdev->panel;  in alloc_fbmem()
627 	bpp = panel->bpp;  in alloc_fbmem()
630 	frame_size = PAGE_ALIGN(panel->x_res * bpp / 8 * panel->y_res);  in alloc_fbmem()
631 	if (region->size > frame_size)  in alloc_fbmem()
632 		frame_size = region->size;  in alloc_fbmem()
634 	lcdc.vram_virt = dma_alloc_wc(lcdc.fbdev->dev, lcdc.vram_size,  in alloc_fbmem()
637 		dev_err(lcdc.fbdev->dev, "unable to allocate FB DMA memory\n");  in alloc_fbmem()
638 		return -ENOMEM;  in alloc_fbmem()
640 	region->size = frame_size;  in alloc_fbmem()
641 	region->paddr = lcdc.vram_phys;  in alloc_fbmem()
642 	region->vaddr = lcdc.vram_virt;  in alloc_fbmem()
643 	region->alloc = 1;  in alloc_fbmem()
652 	dma_free_wc(lcdc.fbdev->dev, lcdc.vram_size, lcdc.vram_virt,  in free_fbmem()
658 	if (!req_md->region_cnt) {  in setup_fbmem()
659 		dev_err(lcdc.fbdev->dev, "no memory regions defined\n");  in setup_fbmem()
660 		return -EINVAL;  in setup_fbmem()
663 	if (req_md->region_cnt > 1) {  in setup_fbmem()
664 		dev_err(lcdc.fbdev->dev, "only one plane is supported\n");  in setup_fbmem()
665 		req_md->region_cnt = 1;  in setup_fbmem()
668 	return alloc_fbmem(&req_md->region[0]);  in setup_fbmem()
690 	lcdc.lcd_ck = clk_get(fbdev->dev, "lcd_ck");  in omap_lcdc_init()
692 		dev_err(fbdev->dev, "unable to access LCD clock\n");  in omap_lcdc_init()
697 	tc_ck = clk_get(fbdev->dev, "tc_ck");  in omap_lcdc_init()
699 		dev_err(fbdev->dev, "unable to access TC clock\n");  in omap_lcdc_init()
711 		dev_err(fbdev->dev, "failed to adjust LCD rate\n");  in omap_lcdc_init()
716 	r = request_irq(fbdev->int_irq, lcdc_irq_handler, 0, MODULE_NAME, fbdev);  in omap_lcdc_init()
718 		dev_err(fbdev->dev, "unable to get IRQ\n");  in omap_lcdc_init()
724 		dev_err(fbdev->dev, "unable to get LCD DMA\n");  in omap_lcdc_init()
747 	free_irq(fbdev->int_irq, lcdc.fbdev);  in omap_lcdc_init()
762 	free_irq(lcdc.fbdev->int_irq, lcdc.fbdev);  in omap_lcdc_cleanup()