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>
28 #include <linux/soc/ti/omap1-soc.h>
29 #include <linux/soc/ti/omap1-io.h>
55 	void (*callback)(u16 status, void *data);
62 	int mirror;  member
102 void omap_set_lcd_dma_b1_mirror(int mirror)  in omap_set_lcd_dma_b1_mirror()  argument
105 		printk(KERN_ERR "DMA mirror is not supported in 1510 mode\n");  in omap_set_lcd_dma_b1_mirror()
108 	lcd_dma.mirror = mirror;  in omap_set_lcd_dma_b1_mirror()
165 #define PIXSTEP(sx, sy, dx, dy) (PIXADDR(dx, dy) - PIXADDR(sx, sy) - es + 1)  in set_b1_regs()
169 		if (!lcd_dma.mirror) {  in set_b1_regs()
171 			bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
178 			fi = PIXSTEP(lcd_dma.xres - 1, 0, 0, 1);  in set_b1_regs()
180 			top = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
181 			bottom = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
183 			fi = PIXSTEP(0, 0, lcd_dma.xres - 1, 1);  in set_b1_regs()
189 		if (!lcd_dma.mirror) {  in set_b1_regs()
190 			top = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
191 			bottom = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
193 			fi = PIXSTEP(0, 0, 1, lcd_dma.yres - 1);  in set_b1_regs()
195 			top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
198 			fi = PIXSTEP(1, 0, 0, lcd_dma.yres - 1);  in set_b1_regs()
204 		if (!lcd_dma.mirror) {  in set_b1_regs()
205 			top = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
208 			fi = PIXSTEP(0, 1, lcd_dma.xres - 1, 0);  in set_b1_regs()
210 			top = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
211 			bottom = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
213 			fi = PIXSTEP(lcd_dma.xres - 1, 1, 0, 0);  in set_b1_regs()
219 		if (!lcd_dma.mirror) {  in set_b1_regs()
220 			top = PIXADDR(lcd_dma.xres - 1, 0);  in set_b1_regs()
221 			bottom = PIXADDR(0, lcd_dma.yres - 1);  in set_b1_regs()
223 			fi = PIXSTEP(1, lcd_dma.yres - 1, 0, 0);  in set_b1_regs()
226 			bottom = PIXADDR(lcd_dma.xres - 1, lcd_dma.yres - 1);  in set_b1_regs()
228 			fi = PIXSTEP(0, lcd_dma.yres - 1, 1, 0);  in set_b1_regs()
270 	if (!(lcd_dma.rotate || lcd_dma.mirror ||  in set_b1_regs()
275 	/* Set the double-indexed addressing mode */  in set_b1_regs()
303 int omap_request_lcd_dma(void (*callback)(u16 status, void *data),  in omap_request_lcd_dma()  argument
304 			 void *data)  in omap_request_lcd_dma()
311 		return -EBUSY;  in omap_request_lcd_dma()
316 	lcd_dma.cb_data = data;  in omap_request_lcd_dma()
321 	lcd_dma.mirror = 0;  in omap_request_lcd_dma()
422 		return -ENODEV;  in omap_init_lcd_dma()