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/*
* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#ifndef _SDE_EDID_PARSER_H_
#define _SDE_EDID_PARSER_H_
#include <linux/types.h>
#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/of_device.h>
#include <linux/i2c.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_edid.h>
#define MAX_NUMBER_ADB 5
#define MAX_AUDIO_DATA_BLOCK_SIZE 30
#define MAX_SPKR_ALLOC_DATA_BLOCK_SIZE 3
#define EDID_VENDOR_ID_SIZE 4
#define SDE_CEA_EXT 0x02
#define SDE_EXTENDED_TAG 0x07
#define MIN_SCRAMBLER_REQ_RATE 340000
#define SDE_DRM_MODE_FLAG_FMT_MASK (0x3 << 20)
enum extended_data_block_types {
VIDEO_CAPABILITY_DATA_BLOCK = 0x0,
VENDOR_SPECIFIC_VIDEO_DATA_BLOCK = 0x01,
HDMI_VIDEO_DATA_BLOCK = 0x04,
HDR_STATIC_METADATA_DATA_BLOCK = 0x06,
Y420_VIDEO_DATA_BLOCK = 0x0E,
VIDEO_FORMAT_PREFERENCE_DATA_BLOCK = 0x0D,
Y420_CAPABILITY_MAP_DATA_BLOCK = 0x0F,
VENDOR_SPECIFIC_AUDIO_DATA_BLOCK = 0x11,
INFOFRAME_DATA_BLOCK = 0x20,
};
#ifdef SDE_EDID_DEBUG_ENABLE
#define SDE_EDID_DEBUG(fmt, args...) SDE_ERROR(fmt, ##args)
#else
#define SDE_EDID_DEBUG(fmt, args...) SDE_DEBUG(fmt, ##args)
#endif
/*
* struct hdmi_edid_hdr_data - HDR Static Metadata
* @eotf: Electro-Optical Transfer Function
* @metadata_type_one: Static Metadata Type 1 support
* @max_luminance: Desired Content Maximum Luminance
* @avg_luminance: Desired Content Frame-average Luminance
* @min_luminance: Desired Content Minimum Luminance
*/
struct sde_edid_hdr_data {
u32 eotf;
bool metadata_type_one;
u32 max_luminance;
u32 avg_luminance;
u32 min_luminance;
};
struct sde_edid_sink_caps {
u32 max_pclk_in_hz;
bool scdc_present;
bool scramble_support; /* scramble support for less than 340Mcsc */
bool read_req_support;
bool osd_disparity;
bool dual_view_support;
bool ind_view_support;
};
struct sde_edid_ctrl {
struct edid *edid;
u8 pt_scan_info;
u8 it_scan_info;
u8 ce_scan_info;
u8 audio_data_block[MAX_NUMBER_ADB * MAX_AUDIO_DATA_BLOCK_SIZE];
int adb_size;
u8 spkr_alloc_data_block[MAX_SPKR_ALLOC_DATA_BLOCK_SIZE];
int sadb_size;
bool hdr_supported;
char vendor_id[EDID_VENDOR_ID_SIZE];
struct sde_edid_sink_caps sink_caps;
struct sde_edid_hdr_data hdr_data;
};
/**
* sde_edid_init() - init edid structure.
* @edid_ctrl: Handle to the edid_ctrl structure.
* Return: handle to sde_edid_ctrl for the client.
*/
struct sde_edid_ctrl *sde_edid_init(void);
/**
* sde_edid_deinit() - deinit edid structure.
* @edid_ctrl: Handle to the edid_ctrl structure.
*
* Return: void.
*/
void sde_edid_deinit(void **edid_ctrl);
/**
* sde_get_edid() - get edid info.
* @connector: Handle to the drm_connector.
* @adapter: handle to i2c adapter for DDC read
* @edid_ctrl: Handle to the edid_ctrl structure.
*
* Return: void.
*/
void sde_get_edid(struct drm_connector *connector,
struct i2c_adapter *adapter,
void **edid_ctrl);
/**
* sde_free_edid() - free edid structure.
* @edid_ctrl: Handle to the edid_ctrl structure.
*
* Return: void.
*/
void sde_free_edid(void **edid_ctrl);
/**
* sde_detect_hdmi_monitor() - detect HDMI mode.
* @edid_ctrl: Handle to the edid_ctrl structure.
*
* Return: error code.
*/
bool sde_detect_hdmi_monitor(void *edid_ctrl);
/**
* _sde_edid_update_modes() - populate EDID modes.
* @edid_ctrl: Handle to the edid_ctrl structure.
*
* Return: error code.
*/
int _sde_edid_update_modes(struct drm_connector *connector,
void *edid_ctrl);
#endif /* _SDE_EDID_PARSER_H_ */
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