path: root/drivers/media/platform/rcar-vin/rcar-dma.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Driver for Renesas R-Car VIN
 *
 * Copyright (C) 2016 Renesas Electronics Corp.
 * Copyright (C) 2011-2013 Renesas Solutions Corp.
 * Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
 * Copyright (C) 2008 Magnus Damm
 *
 * Based on the soc-camera rcar_vin driver
 */

#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>

#include <media/videobuf2-dma-contig.h>

#include "rcar-vin.h"

/* -----------------------------------------------------------------------------
 * HW Functions
 */

/* Register offsets for R-Car VIN */
#define VNMC_REG	0x00	/* Video n Main Control Register */
#define VNMS_REG	0x04	/* Video n Module Status Register */
#define VNFC_REG	0x08	/* Video n Frame Capture Register */
#define VNSLPRC_REG	0x0C	/* Video n Start Line Pre-Clip Register */
#define VNELPRC_REG	0x10	/* Video n End Line Pre-Clip Register */
#define VNSPPRC_REG	0x14	/* Video n Start Pixel Pre-Clip Register */
#define VNEPPRC_REG	0x18	/* Video n End Pixel Pre-Clip Register */
#define VNIS_REG	0x2C	/* Video n Image Stride Register */
#define VNMB_REG(m)	(0x30 + ((m) << 2)) /* Video n Memory Base m Register */
#define VNIE_REG	0x40	/* Video n Interrupt Enable Register */
#define VNINTS_REG	0x44	/* Video n Interrupt Status Register */
#define VNSI_REG	0x48	/* Video n Scanline Interrupt Register */
#define VNMTC_REG	0x4C	/* Video n Memory Transfer Control Register */
#define VNDMR_REG	0x58	/* Video n Data Mode Register */
#define VNDMR2_REG	0x5C	/* Video n Data Mode Register 2 */
#define VNUVAOF_REG	0x60	/* Video n UV Address Offset Register */

/* Register offsets specific for Gen2 */
#define VNSLPOC_REG	0x1C	/* Video n Start Line Post-Clip Register */
#define VNELPOC_REG	0x20	/* Video n End Line Post-Clip Register */
#define VNSPPOC_REG	0x24	/* Video n Start Pixel Post-Clip Register */
#define VNEPPOC_REG	0x28	/* Video n End Pixel Post-Clip R