| /* |
| * 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 |
| |
| 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 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 device *dev; |
| struct clk *clock; |
| unsigned int irq; |
| void __iomem *reg_base; |
| void __iomem *phy_addr; |
| unsigned int enable_mask; |
| |
| struct video_info *video_info; |
| struct link_train link_train; |
| struct work_struct hotplug_work; |
| }; |
| |
| /* 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 |
| |
| /* Definition for DPCD Register */ |
| #define DPCD_ADDR_DPCD_REV 0x0000 |
| #define DPCD_ADDR_MAX_LINK_RATE 0x0001 |
| #define DPCD_ADDR_MAX_LANE_COUNT 0x0002 |
| #define DPCD_ADDR_LINK_BW_SET 0x0100 |
| #define DPCD_ADDR_LANE_COUNT_SET 0x0101 |
| #define DPCD_ADDR_TRAINING_PATTERN_SET 0x0102 |
| #define DPCD_ADDR_TRAINING_LANE0_SET 0x0103 |
| #define DPCD_ADDR_LANE0_1_STATUS 0x0202 |
| #define DPCD_ADDR_LANE_ALIGN_STATUS_UPDATED 0x0204 |
| #define DPCD_ADDR_ADJUST_REQUEST_LANE0_1 0x0206 |
| #define DPCD_ADDR_ADJUST_REQUEST_LANE2_3 0x0207 |
| #define DPCD_ADDR_TEST_REQUEST 0x0218 |
| #define DPCD_ADDR_TEST_RESPONSE 0x0260 |
| #define DPCD_ADDR_TEST_EDID_CHECKSUM 0x0261 |
| #define DPCD_ADDR_SINK_POWER_STATE 0x0600 |
| |
| /* DPCD_ADDR_MAX_LANE_COUNT */ |
| #define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1) |
| #define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f) |
| |
| /* DPCD_ADDR_LANE_COUNT_SET */ |
| #define DPCD_ENHANCED_FRAME_EN (0x1 << 7) |
| #define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f) |
| |
| /* DPCD_ADDR_TRAINING_PATTERN_SET */ |
| #define DPCD_SCRAMBLING_DISABLED (0x1 << 5) |
| #define DPCD_SCRAMBLING_ENABLED (0x0 << 5) |
| #define DPCD_TRAINING_PATTERN_2 (0x2 << 0) |
| #define DPCD_TRAINING_PATTERN_1 (0x1 << 0) |
| #define DPCD_TRAINING_PATTERN_DISABLED (0x0 << 0) |
| |
| /* DPCD_ADDR_TRAINING_LANE0_SET */ |
| #define DPCD_MAX_PRE_EMPHASIS_REACHED (0x1 << 5) |
| #define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3) |
| #define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3) |
| #define DPCD_PRE_EMPHASIS_PATTERN2_LEVEL0 (0x0 << 3) |
| #define DPCD_MAX_SWING_REACHED (0x1 << 2) |
| #define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0) |
| #define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3) |
| #define DPCD_VOLTAGE_SWING_PATTERN1_LEVEL0 (0x0 << 0) |
| |
| /* DPCD_ADDR_LANE0_1_STATUS */ |
| #define DPCD_LANE_SYMBOL_LOCKED (0x1 << 2) |
| #define DPCD_LANE_CHANNEL_EQ_DONE (0x1 << 1) |
| #define DPCD_LANE_CR_DONE (0x1 << 0) |
| #define DPCD_CHANNEL_EQ_BITS (DPCD_LANE_CR_DONE| \ |
| DPCD_LANE_CHANNEL_EQ_DONE|\ |
| DPCD_LANE_SYMBOL_LOCKED) |
| |
| /* DPCD_ADDR_LANE_ALIGN__STATUS_UPDATED */ |
| #define DPCD_LINK_STATUS_UPDATED (0x1 << 7) |
| #define DPCD_DOWNSTREAM_PORT_STATUS_CHANGED (0x1 << 6) |
| #define DPCD_INTERLANE_ALIGN_DONE (0x1 << 0) |
| |
| /* DPCD_ADDR_TEST_REQUEST */ |
| #define DPCD_TEST_EDID_READ (0x1 << 2) |
| |
| /* DPCD_ADDR_TEST_RESPONSE */ |
| #define DPCD_TEST_EDID_CHECKSUM_WRITE (0x1 << 2) |
| |
| /* DPCD_ADDR_SINK_POWER_STATE */ |
| #define DPCD_SET_POWER_STATE_D0 (0x1 << 0) |
| #define DPCD_SET_POWER_STATE_D4 (0x2 << 0) |
| |
| #endif /* _EXYNOS_DP_CORE_H */ |
