| /* |
| * Header file for Samsung DP (Display Port) interface driver. |
| * |
| * Copyright (C) 2012 Samsung Electronics Co., Ltd. |
| * Author: Jingoo Han <jg1.han@samsung.com> |
| * |
| * 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. |
| */ |
| |
| #ifndef _EXYNOS_DP_CORE_H |
| #define _EXYNOS_DP_CORE_H |
| |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_dp_helper.h> |
| #include <drm/exynos_drm.h> |
| |
| #include "exynos_drm_drv.h" |
| |
| #define DP_TIMEOUT_LOOP_COUNT 100 |
| #define MAX_CR_LOOP 5 |
| #define MAX_EQ_LOOP 5 |
| |
| enum link_rate_type { |
| LINK_RATE_1_62GBPS = 0x06, |
| LINK_RATE_2_70GBPS = 0x0a |
| }; |
| |
| enum link_lane_count_type { |
| LANE_COUNT1 = 1, |
| LANE_COUNT2 = 2, |
| LANE_COUNT4 = 4 |
| }; |
| |
| enum link_training_state { |
| START, |
| CLOCK_RECOVERY, |
| EQUALIZER_TRAINING, |
| FINISHED, |
| FAILED |
| }; |
| |
| enum voltage_swing_level { |
| VOLTAGE_LEVEL_0, |
| VOLTAGE_LEVEL_1, |
| VOLTAGE_LEVEL_2, |
| VOLTAGE_LEVEL_3, |
| }; |
| |
| enum pre_emphasis_level { |
| PRE_EMPHASIS_LEVEL_0, |
| PRE_EMPHASIS_LEVEL_1, |
| PRE_EMPHASIS_LEVEL_2, |
| PRE_EMPHASIS_LEVEL_3, |
| }; |
| |
| enum pattern_set { |
| PRBS7, |
| D10_2, |
| TRAINING_PTN1, |
| TRAINING_PTN2, |
| DP_NONE |
| }; |
| |
| enum color_space { |
| COLOR_RGB, |
| COLOR_YCBCR422, |
| COLOR_YCBCR444 |
| }; |
| |
| enum color_depth { |
| COLOR_6, |
| COLOR_8, |
| COLOR_10, |
| COLOR_12 |
| }; |
| |
| enum color_coefficient { |
| COLOR_YCBCR601, |
| COLOR_YCBCR709 |
| }; |
| |
| enum dynamic_range { |
| VESA, |
| CEA |
| }; |
| |
| enum pll_status { |
| PLL_UNLOCKED, |
| PLL_LOCKED |
| }; |
| |
| enum clock_recovery_m_value_type { |
| CALCULATED_M, |
| REGISTER_M |
| }; |
| |
| enum video_timing_recognition_type { |
| VIDEO_TIMING_FROM_CAPTURE, |
| VIDEO_TIMING_FROM_REGISTER |
| }; |
| |
| enum analog_power_block { |
| AUX_BLOCK, |
| CH0_BLOCK, |
| CH1_BLOCK, |
| CH2_BLOCK, |
| CH3_BLOCK, |
| ANALOG_TOTAL, |
| POWER_ALL |
| }; |
| |
| enum dp_irq_type { |
| DP_IRQ_TYPE_HP_CABLE_IN, |
| DP_IRQ_TYPE_HP_CABLE_OUT, |
| DP_IRQ_TYPE_HP_CHANGE, |
| DP_IRQ_TYPE_UNKNOWN, |
| }; |
| |
| struct video_info { |
| char *name; |
| |
| bool h_sync_polarity; |
| bool v_sync_polarity; |
| bool interlaced; |
| |
| enum color_space color_space; |
| enum dynamic_range dynamic_range; |
| enum color_coefficient ycbcr_coeff; |
| enum color_depth color_depth; |
| |
| enum link_rate_type link_rate; |
| enum link_lane_count_type lane_count; |
| }; |
| |
| struct link_train { |
| int eq_loop; |
| int cr_loop[4]; |
| |
| u8 link_rate; |
| u8 lane_count; |
| u8 training_lane[4]; |
| |
| enum link_training_state lt_state; |
| }; |
| |
| struct exynos_dp_device { |
| struct drm_encoder encoder; |
| struct device *dev; |
| struct drm_device *drm_dev; |
| struct drm_connector connector; |
| struct drm_panel *panel; |
| struct drm_bridge *bridge; |
| struct clk *clock; |
| unsigned int irq; |
| void __iomem *reg_base; |
| |
| struct video_info *video_info; |
| struct link_train link_train; |
| struct work_struct hotplug_work; |
| struct phy *phy; |
| int dpms_mode; |
| int hpd_gpio; |
| |
| struct exynos_drm_panel_info priv; |
| }; |
| |
| /* exynos_dp_reg.c */ |
| void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable); |
| void exynos_dp_stop_video(struct exynos_dp_device *dp); |
| void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable); |
| void exynos_dp_init_analog_param(struct exynos_dp_device *dp); |
| void exynos_dp_init_interrupt(struct exynos_dp_device *dp); |
| void exynos_dp_reset(struct exynos_dp_device *dp); |
| void exynos_dp_swreset(struct exynos_dp_device *dp); |
| void exynos_dp_config_interrupt(struct exynos_dp_device *dp); |
| enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp); |
| void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable); |
| void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp, |
| enum analog_power_block block, |
| bool enable); |
| void exynos_dp_init_analog_func(struct exynos_dp_device *dp); |
| void exynos_dp_init_hpd(struct exynos_dp_device *dp); |
| enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp); |
| void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp); |
| void exynos_dp_reset_aux(struct exynos_dp_device *dp); |
| void exynos_dp_init_aux(struct exynos_dp_device *dp); |
| int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp); |
| void exynos_dp_enable_sw_function(struct exynos_dp_device *dp); |
| int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp); |
| int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp, |
| unsigned int reg_addr, |
| unsigned char data); |
| int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp, |
| unsigned int reg_addr, |
| unsigned char *data); |
| int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp, |
| unsigned int reg_addr, |
| unsigned int count, |
| unsigned char data[]); |
| int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp, |
| unsigned int reg_addr, |
| unsigned int count, |
| unsigned char data[]); |
| int exynos_dp_select_i2c_device(struct exynos_dp_device *dp, |
| unsigned int device_addr, |
| unsigned int reg_addr); |
| int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp, |
| unsigned int device_addr, |
| unsigned int reg_addr, |
| unsigned int *data); |
| int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp, |
| unsigned int device_addr, |
| unsigned int reg_addr, |
| unsigned int count, |
| unsigned char edid[]); |
| void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype); |
| void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype); |
| void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count); |
| void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count); |
| void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable); |
| void exynos_dp_set_training_pattern(struct exynos_dp_device *dp, |
| enum pattern_set pattern); |
| void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level); |
| void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level); |
| void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level); |
| void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level); |
| void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp, |
| u32 training_lane); |
| void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp, |
| u32 training_lane); |
| void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp, |
| u32 training_lane); |
| void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp, |
| u32 training_lane); |
| u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp); |
| u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp); |
| u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp); |
| u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp); |
| void exynos_dp_reset_macro(struct exynos_dp_device *dp); |
| void exynos_dp_init_video(struct exynos_dp_device *dp); |
| |
| void exynos_dp_set_video_color_format(struct exynos_dp_device *dp); |
| int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp); |
| void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp, |
| enum clock_recovery_m_value_type type, |
| u32 m_value, |
| u32 n_value); |
| void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type); |
| void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable); |
| void exynos_dp_start_video(struct exynos_dp_device *dp); |
| int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp); |
| void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp); |
| void exynos_dp_enable_scrambling(struct exynos_dp_device *dp); |
| void exynos_dp_disable_scrambling(struct exynos_dp_device *dp); |
| |
| /* I2C EDID Chip ID, Slave Address */ |
| #define I2C_EDID_DEVICE_ADDR 0x50 |
| #define I2C_E_EDID_DEVICE_ADDR 0x30 |
| |
| #define EDID_BLOCK_LENGTH 0x80 |
| #define EDID_HEADER_PATTERN 0x00 |
| #define EDID_EXTENSION_FLAG 0x7e |
| #define EDID_CHECKSUM 0x7f |
| |
| /* DP_MAX_LANE_COUNT */ |
| #define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1) |
| #define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f) |
| |
| /* DP_LANE_COUNT_SET */ |
| #define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f) |
| |
| /* DP_TRAINING_LANE0_SET */ |
| #define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3) |
| #define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3) |
| #define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0) |
| #define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3) |
| |
| #endif /* _EXYNOS_DP_CORE_H */ |
