1 // SPDX-License-Identifier: GPL-2.0-only
3  * linux/arch/arm/mach-omap1/lcd_dma.c
5  * Extracted from arch/arm/plat-omap/dma.c
6  * Copyright (C) 2003 - 2008 Nokia Corporation
11  * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc.
13  * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc.
16  * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
26 #include <linux/omap-dma.h>
133 	int es;  in set_b1_regs()  local
142 		es = 1;  in set_b1_regs()
145 		es = 2;  in set_b1_regs()
148 		es = 4;  in set_b1_regs()
161 		((y) * vxres * yscale + (x) * xscale) * es)  in set_b1_regs()
162 #define PIXSTEP(sx, sy, dx, dy) (PIXADDR(dx, dy) - PIXADDR(sx, sy) - es + 1)  in set_b1_regs()
168 			bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
175 			fi = PIXSTEP(lcd_dma.xres - 1, 0, 0, 1);  in set_b1_regs()
177 			top = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
178 			bottom = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
180 			fi = PIXSTEP(0, 0, lcd_dma.xres - 1, 1);  in set_b1_regs()
187 			top = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
188 			bottom = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
190 			fi = PIXSTEP(0, 0, 1, lcd_dma.yres - 1);  in set_b1_regs()
192 			top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
195 			fi = PIXSTEP(1, 0, 0, lcd_dma.yres - 1);  in set_b1_regs()
202 			top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
205 			fi = PIXSTEP(0, 1, lcd_dma.xres - 1, 0);  in set_b1_regs()
207 			top = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
208 			bottom = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
210 			fi = PIXSTEP(lcd_dma.xres - 1, 1, 0, 0);  in set_b1_regs()
217 			top = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
218 			bottom = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
220 			fi = PIXSTEP(1, lcd_dma.yres - 1, 0, 0);  in set_b1_regs()
223 			bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
225 			fi = PIXSTEP(0, lcd_dma.yres - 1, 1, 0);  in set_b1_regs()
262 		w |= 1 << 1;		/* Block interrupt enable */  in set_b1_regs()
272 	/* Set the double-indexed addressing mode */  in set_b1_regs()
308 		return -EBUSY;  in omap_request_lcd_dma()
350 	 * Set the Enable bit only if an external controller is  in omap_enable_lcd_dma()
419 		return -ENODEV;  in omap_init_lcd_dma()