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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
/* Header file for Samsung DP (Display Port) interface driver. */
#ifndef CPU_SAMSUNG_EXYNOS5250_DP_CORE_H
#define CPU_SAMSUNG_EXYNOS5250_DP_CORE_H
#define STREAM_ON_TIMEOUT 100
#define PLL_LOCK_TIMEOUT 10
#define DP_INIT_TRIES 10
#define MAX_CR_LOOP 5
#define MAX_EQ_LOOP 4
/* Link rate type */
enum link_rate {
LINK_RATE_1_62GBPS = 0x06,
LINK_RATE_2_70GBPS = 0x0a
};
/* Number of lanes supported */
enum link_lane_count {
LANE_COUNT1 = 1,
LANE_COUNT2 = 2,
LANE_COUNT4 = 4
};
/* Pre emphasis level */
enum pre_emphasis_level {
PRE_EMPHASIS_LEVEL_0,
PRE_EMPHASIS_LEVEL_1,
PRE_EMPHASIS_LEVEL_2,
PRE_EMPHASIS_LEVEL_3,
};
/* Type of color space */
enum color_space {
COLOR_RGB,
COLOR_YCBCR422,
COLOR_YCBCR444
};
/* Video input Bit Per Color */
enum color_depth {
COLOR_6,
COLOR_8,
COLOR_10,
COLOR_12
};
/* Type of YCbCr coefficient */
enum color_coefficient {
COLOR_YCBCR601,
COLOR_YCBCR709
};
/* Color range */
enum dynamic_range {
VESA,
CEA
};
/* Status of PLL clock */
enum pll_status {
PLL_UNLOCKED,
PLL_LOCKED
};
/* To choose type of m_value */
enum clock_recovery_m_value_type {
CALCULATED_M,
REGISTER_M
};
struct video_info {
enum color_space color_space;
enum dynamic_range dynamic_range;
enum color_coefficient ycbcr_coeff;
enum color_depth color_depth;
enum link_rate link_rate;
enum link_lane_count lane_count;
char *name;
unsigned int h_sync_polarity:1;
unsigned int v_sync_polarity:1;
unsigned int interlaced:1;
};
struct link_train {
u8 link_rate;
u8 lane_count;
};
struct s5p_dp_device {
unsigned int irq;
struct exynos5_dp *base;
struct video_info *video_info;
struct link_train link_train;
};
/* s5p_dp_reg.c */
/*
* Reset DP module
*
* param dp pointer to main s5p-dp structure
*/
void s5p_dp_reset(struct s5p_dp_device *dp);
/*
* Initialize DP to receive video stream
*
* param dp pointer to main s5p-dp structure
*/
void s5p_dp_init_video(struct s5p_dp_device *dp);
/*
* Check whether PLL is locked
*
* param dp pointer to main s5p-dp structure
* return Lock status
*/
unsigned int s5p_dp_get_pll_lock_status(struct s5p_dp_device *dp);
/*
* Initialize analog functions of DP
*
* param dp pointer to main s5p-dp structure
* return 0 on success
*/
int s5p_dp_init_analog_func(struct s5p_dp_device *dp);
/*
* Initialize DP for AUX transaction
*
* param dp pointer to main s5p-dp structure
*/
void s5p_dp_init_aux(struct s5p_dp_device *dp);
/*
* Start an AUX transaction.
*
* param dp pointer to main s5p-dp structure
*/
int s5p_dp_start_aux_transaction(struct s5p_dp_device *dp);
/*
* Write a byte to DPCD register
*
* param dp pointer to main s5p-dp structure
* param reg_addr DPCD register to be written
* param data byte data to be written
* return write status
*/
int s5p_dp_write_byte_to_dpcd(struct s5p_dp_device *dp,
unsigned int reg_addr,
unsigned char data);
/*
* Read a byte from DPCD register
*
* param dp pointer to main s5p-dp structure
* param reg_addr DPCD register to read
* param data read byte data
* return read status
*/
int s5p_dp_read_byte_from_dpcd(struct s5p_dp_device *dp,
unsigned int reg_addr,
unsigned char *data);
/*
* Initialize DP video functions
*
* param dp pointer to main s5p-dp structure
*/
//void s5p_dp_init_video(struct s5p_dp_device *dp);
/*
* Set color parameters for display
*
* param dp pointer to main s5p-dp structure
* param color_depth Video input Bit Per Color
* param color_space Colorimetric format of input video
* param dynamic_range VESA range or CEA range
* param coeff YCbCr Coefficients of input video
*/
void s5p_dp_set_video_color_format(struct s5p_dp_device *dp,
unsigned int color_depth,
unsigned int color_space,
unsigned int dynamic_range,
unsigned int coeff);
/*
* Check whether video clock is on
*
* param dp pointer to main s5p-dp structure
* return clock status
*/
int s5p_dp_is_slave_video_stream_clock_on(struct s5p_dp_device *dp);
/*
* Check whether video clock is on
*
* param dp pointer to main s5p-dp structure
* param type clock_recovery_m_value_type
* param m_value to calculate m_vid value
* param n_value to calculate n_vid value
*/
void s5p_dp_set_video_cr_mn(struct s5p_dp_device *dp,
enum clock_recovery_m_value_type type,
unsigned int m_value,
unsigned int n_value);
/*
* Set DP to video slave mode thereby enabling video master
*
* param dp pointer to main s5p-dp structure
*/
void s5p_dp_enable_video_master(struct s5p_dp_device *dp);
/*
* Check whether video stream is on
*
* param dp pointer to main s5p-dp structure
* return video stream status
*/
int s5p_dp_is_video_stream_on(struct s5p_dp_device *dp);
/*
* Configure DP in slave mode
*
* param dp pointer to main s5p-dp structure
* param video_info pointer to main video_info structure.
*/
void s5p_dp_config_video_slave_mode(struct s5p_dp_device *dp,
struct video_info *video_info);
/*
* Wait unitl HW link training done
*
* param dp pointer to main s5p-dp structure
*/
void s5p_dp_wait_hw_link_training_done(struct s5p_dp_device *dp);
/* startup and init */
struct exynos5_fimd_panel;
void fb_init(unsigned long int fb_size, void *lcdbase,
struct exynos5_fimd_panel *pd);
int dp_controller_init(struct s5p_dp_device *dp_device);
int lcd_ctrl_init(unsigned long int fb_size,
struct exynos5_fimd_panel *panel_data, void *lcdbase);
#endif /* CPU_SAMSUNG_EXYNOS5250_DP_CORE_H */
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