![Ajay Kumar](/assets/img/avatar_default.png)
Add drm_panel controls to support powerup/down of the eDP panel, if one is present at the sink side. Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com> Acked-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
281 lines
7.9 KiB
C
281 lines
7.9 KiB
C
/*
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* Header file for Samsung DP (Display Port) interface driver.
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*
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* Copyright (C) 2012 Samsung Electronics Co., Ltd.
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* Author: Jingoo Han <jg1.han@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _EXYNOS_DP_CORE_H
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#define _EXYNOS_DP_CORE_H
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#include <drm/drm_crtc.h>
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#include <drm/drm_dp_helper.h>
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#include <drm/exynos_drm.h>
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#define DP_TIMEOUT_LOOP_COUNT 100
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#define MAX_CR_LOOP 5
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#define MAX_EQ_LOOP 5
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enum link_rate_type {
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LINK_RATE_1_62GBPS = 0x06,
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LINK_RATE_2_70GBPS = 0x0a
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};
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enum link_lane_count_type {
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LANE_COUNT1 = 1,
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LANE_COUNT2 = 2,
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LANE_COUNT4 = 4
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};
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enum link_training_state {
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START,
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CLOCK_RECOVERY,
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EQUALIZER_TRAINING,
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FINISHED,
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FAILED
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};
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enum voltage_swing_level {
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VOLTAGE_LEVEL_0,
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VOLTAGE_LEVEL_1,
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VOLTAGE_LEVEL_2,
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VOLTAGE_LEVEL_3,
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};
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enum pre_emphasis_level {
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PRE_EMPHASIS_LEVEL_0,
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PRE_EMPHASIS_LEVEL_1,
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PRE_EMPHASIS_LEVEL_2,
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PRE_EMPHASIS_LEVEL_3,
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};
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enum pattern_set {
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PRBS7,
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D10_2,
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TRAINING_PTN1,
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TRAINING_PTN2,
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DP_NONE
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};
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enum color_space {
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COLOR_RGB,
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COLOR_YCBCR422,
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COLOR_YCBCR444
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};
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enum color_depth {
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COLOR_6,
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COLOR_8,
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COLOR_10,
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COLOR_12
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};
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enum color_coefficient {
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COLOR_YCBCR601,
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COLOR_YCBCR709
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};
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enum dynamic_range {
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VESA,
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CEA
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};
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enum pll_status {
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PLL_UNLOCKED,
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PLL_LOCKED
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};
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enum clock_recovery_m_value_type {
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CALCULATED_M,
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REGISTER_M
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};
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enum video_timing_recognition_type {
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VIDEO_TIMING_FROM_CAPTURE,
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VIDEO_TIMING_FROM_REGISTER
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};
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enum analog_power_block {
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AUX_BLOCK,
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CH0_BLOCK,
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CH1_BLOCK,
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CH2_BLOCK,
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CH3_BLOCK,
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ANALOG_TOTAL,
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POWER_ALL
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};
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enum dp_irq_type {
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DP_IRQ_TYPE_HP_CABLE_IN,
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DP_IRQ_TYPE_HP_CABLE_OUT,
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DP_IRQ_TYPE_HP_CHANGE,
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DP_IRQ_TYPE_UNKNOWN,
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};
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struct video_info {
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char *name;
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bool h_sync_polarity;
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bool v_sync_polarity;
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bool interlaced;
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enum color_space color_space;
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enum dynamic_range dynamic_range;
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enum color_coefficient ycbcr_coeff;
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enum color_depth color_depth;
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enum link_rate_type link_rate;
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enum link_lane_count_type lane_count;
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};
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struct link_train {
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int eq_loop;
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int cr_loop[4];
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u8 link_rate;
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u8 lane_count;
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u8 training_lane[4];
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enum link_training_state lt_state;
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};
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struct exynos_dp_device {
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struct device *dev;
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struct drm_device *drm_dev;
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struct drm_connector connector;
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struct drm_encoder *encoder;
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struct drm_panel *panel;
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struct clk *clock;
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unsigned int irq;
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void __iomem *reg_base;
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void __iomem *phy_addr;
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unsigned int enable_mask;
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struct video_info *video_info;
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struct link_train link_train;
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struct work_struct hotplug_work;
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struct phy *phy;
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int dpms_mode;
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int hpd_gpio;
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struct exynos_drm_panel_info priv;
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};
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/* exynos_dp_reg.c */
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void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable);
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void exynos_dp_stop_video(struct exynos_dp_device *dp);
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void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable);
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void exynos_dp_init_analog_param(struct exynos_dp_device *dp);
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void exynos_dp_init_interrupt(struct exynos_dp_device *dp);
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void exynos_dp_reset(struct exynos_dp_device *dp);
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void exynos_dp_swreset(struct exynos_dp_device *dp);
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void exynos_dp_config_interrupt(struct exynos_dp_device *dp);
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enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
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void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
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void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
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enum analog_power_block block,
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bool enable);
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void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
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void exynos_dp_init_hpd(struct exynos_dp_device *dp);
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enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
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void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp);
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void exynos_dp_reset_aux(struct exynos_dp_device *dp);
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void exynos_dp_init_aux(struct exynos_dp_device *dp);
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int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
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void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
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int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
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int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
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unsigned int reg_addr,
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unsigned char data);
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int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
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unsigned int reg_addr,
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unsigned char *data);
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int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
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unsigned int reg_addr,
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unsigned int count,
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unsigned char data[]);
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int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
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unsigned int reg_addr,
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unsigned int count,
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unsigned char data[]);
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int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
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unsigned int device_addr,
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unsigned int reg_addr);
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int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
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unsigned int device_addr,
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unsigned int reg_addr,
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unsigned int *data);
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int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
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unsigned int device_addr,
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unsigned int reg_addr,
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unsigned int count,
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unsigned char edid[]);
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void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
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void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
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void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
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void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
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void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
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void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
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enum pattern_set pattern);
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void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
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void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
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void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
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void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
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void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
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u32 training_lane);
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void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
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u32 training_lane);
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void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
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u32 training_lane);
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void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
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u32 training_lane);
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u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
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u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
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u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
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u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp);
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void exynos_dp_reset_macro(struct exynos_dp_device *dp);
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void exynos_dp_init_video(struct exynos_dp_device *dp);
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void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
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int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
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void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
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enum clock_recovery_m_value_type type,
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u32 m_value,
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u32 n_value);
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void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
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void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
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void exynos_dp_start_video(struct exynos_dp_device *dp);
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int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp);
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void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp);
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void exynos_dp_enable_scrambling(struct exynos_dp_device *dp);
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void exynos_dp_disable_scrambling(struct exynos_dp_device *dp);
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/* I2C EDID Chip ID, Slave Address */
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#define I2C_EDID_DEVICE_ADDR 0x50
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#define I2C_E_EDID_DEVICE_ADDR 0x30
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#define EDID_BLOCK_LENGTH 0x80
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#define EDID_HEADER_PATTERN 0x00
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#define EDID_EXTENSION_FLAG 0x7e
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#define EDID_CHECKSUM 0x7f
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/* DP_MAX_LANE_COUNT */
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#define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
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#define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
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/* DP_LANE_COUNT_SET */
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#define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f)
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/* DP_TRAINING_LANE0_SET */
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#define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3)
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#define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3)
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#define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
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#define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
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#endif /* _EXYNOS_DP_CORE_H */
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