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"

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

struct hdmi_win_data {
	dma_addr_t		dma_addr;
	void __iomem		*vaddr;
	dma_addr_t		chroma_dma_addr;
	void __iomem		*chroma_vaddr;
	uint32_t		pixel_format;
	unsigned int		bpp;
	unsigned int		crtc_x;
	unsigned int		crtc_y;
	unsigned int		crtc_width;
	unsigned int		crtc_height;
	unsigned int		fb_x;
	unsigned int		fb_y;
	unsigned int		fb_width;
	unsigned int		fb_height;
	unsigned int		src_width;
	unsigned int		src_height;
	unsigned int		mode_width;
	unsigned int		mode_height;
	unsigned int		scan_flags;
};

struct mixer_resources {
	int			irq;
	void __iomem		*mixer_regs;
	void __iomem		*vp_regs;
	spinlock_t		reg_slock;
	struct clk		*mixer;
	struct clk		*vp;
	struct clk		*sclk_mixer;
	struct clk		*sclk_hdmi;
	struct clk		*sclk_dac;
};

struct mixer_context {
	struct device		*dev;
	int			pipe;
	bool			interlace;
	bool			powered;
	u32			int_en;

	struct mutex		mixer_mutex;
	struct mixer_resources	mixer_res;
	struct hdmi_win_data	win_data[MIXER_WIN_NR];
};

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,