path: root/drivers/gpu/drm/exynos/exynos_mixer.c

/*
 * Copyright (C) 2011 Samsung Electronics Co.Ltd
 * Authors:
 * Seung-Woo Kim <sw0312.kim@samsung.com>
 *	Inki Dae <inki.dae@samsung.com>
 *	Joonyoung Shim <jy0922.shim@samsung.com>
 *
 * Based on drivers/media/video/s5p-tv/mixer_reg.c
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 */

#include "drmP.h"

#include "regs-mixer.h"
#include "regs-vp.h"

#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <linux/regulator/consumer.h>

#include <drm/exynos_drm.h>

#include "exynos_drm_drv.h"
#include "exynos_drm_hdmi.h"
#include "exynos_hdmi.h"
#include "exynos_mixer.h"

#define get_mixer_context(dev)	platform_get_drvdata(to_platform_device(dev))

static const u8 filter_y_horiz_tap8[] = {
	0,	-1,	-1,	-1,	-1,	-1,	-1,	-1,
	-1,	-1,	-1,	-1,	-1,	0,	0,	0,
	0,	2,	4,	5,	6,	6,	6,	6,
	6,	5,	5,	4,	3,	2,	1,	1,
	0,	-6,	-12,	-16,	-18,	-20,	-21,	-20,
	-20,	-18,	-16,	-13,	-10,	-8,	-5,	-2,
	127,	126,	125,	121,	114,	107,	99,	89,
	79,	68,	57,	46,	35,	25,	16,	8,
};

static const u8 filter_y_vert_tap4[] = {
	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
	127,	126,	124,	118,	111,	102,	92,	81,
	70,	59,	48,	37,	27,	19,	11,	5,
	0,	5,	11,	19,	27,	37,	48,	59,
	70,	81,	92,	102,	111,	118,	124,	126,
	0,	0,	-1,	-1,	-2,	-3,	-4,	-5,
	-6,	-7,	-8,	-8,	-8,	-8,	-6,	-3,
};

static const u8 filter_cr_horiz_tap4[] = {
	0,	-3,	-6,	-8,	-8,	-8,	-8,	-7,
	-6,	-5,	-4,	-3,	-2,	-1,	-1,	0,
	127,	126,	124,	118,	111,	102,	92,	81,
	70,	59,	48,	37,	27,	19,	11,	5,
};

static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
{
	return readl(res->vp_regs + reg_id);
}

static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
				 u32 val)
{
	writel(val, res->vp_regs + reg_id);
}

static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
				 u32 val, u32 mask)
{
	u32 old = vp_reg_read(res, reg_id);

	val = (val & mask) | (old & ~mask);
	writel(val, res->vp_regs + reg_id);
}

static inline u32