/* * This file is part of the coreboot project. * * Copyright 2013 Google Inc. * Copyright (C) 2012 Samsung Electronics * * 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; version 2 of the License. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /* 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 */