2 * Header file for Samsung DP (Display Port) interface driver.
4 * Copyright (C) 2012 Samsung Electronics Co., Ltd.
5 * Author: Jingoo Han <jg1.han@samsung.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #ifndef _EXYNOS_DP_CORE_H
14 #define _EXYNOS_DP_CORE_H
16 #include <video/exynos_dp.h>
19 DP_IRQ_TYPE_HP_CABLE_IN,
20 DP_IRQ_TYPE_HP_CABLE_OUT,
21 DP_IRQ_TYPE_HP_CHANGE,
33 enum link_training_state lt_state;
37 void (*phy_init)(void);
38 void (*phy_exit)(void);
41 struct exynos_dp_device {
43 struct drm_device *drm_dev;
47 void __iomem *reg_base;
51 struct dp_phy_ops phy_ops;
52 struct video_info *video_info;
53 enum link_training_type training_type;
54 struct link_train link_train;
55 struct work_struct hotplug_work;
59 void exynos_dp_enable_video_mute(struct exynos_dp_device *dp, bool enable);
60 void exynos_dp_stop_video(struct exynos_dp_device *dp);
61 void exynos_dp_lane_swap(struct exynos_dp_device *dp, bool enable);
62 void exynos_dp_init_interrupt(struct exynos_dp_device *dp);
63 void exynos_dp_reset(struct exynos_dp_device *dp);
64 enum pll_status exynos_dp_get_pll_lock_status(struct exynos_dp_device *dp);
65 void exynos_dp_set_pll_power_down(struct exynos_dp_device *dp, bool enable);
66 void exynos_dp_set_analog_power_down(struct exynos_dp_device *dp,
67 enum analog_power_block block,
69 void exynos_dp_init_analog_func(struct exynos_dp_device *dp);
70 void exynos_dp_init_hpd(struct exynos_dp_device *dp);
71 void exynos_dp_disable_hpd(struct exynos_dp_device *dp);
72 enum dp_irq_type exynos_dp_get_irq_type(struct exynos_dp_device *dp);
73 void exynos_dp_clear_hotplug_interrupts(struct exynos_dp_device *dp);
74 void exynos_dp_reset_aux(struct exynos_dp_device *dp);
75 void exynos_dp_init_aux(struct exynos_dp_device *dp);
76 int exynos_dp_get_plug_in_status(struct exynos_dp_device *dp);
77 void exynos_dp_enable_sw_function(struct exynos_dp_device *dp);
78 int exynos_dp_start_aux_transaction(struct exynos_dp_device *dp);
79 int exynos_dp_write_byte_to_dpcd(struct exynos_dp_device *dp,
80 unsigned int reg_addr,
82 int exynos_dp_read_byte_from_dpcd(struct exynos_dp_device *dp,
83 unsigned int reg_addr,
85 int exynos_dp_write_bytes_to_dpcd(struct exynos_dp_device *dp,
86 unsigned int reg_addr,
88 unsigned char data[]);
89 int exynos_dp_read_bytes_from_dpcd(struct exynos_dp_device *dp,
90 unsigned int reg_addr,
92 unsigned char data[]);
93 int exynos_dp_select_i2c_device(struct exynos_dp_device *dp,
94 unsigned int device_addr,
95 unsigned int reg_addr);
96 int exynos_dp_read_byte_from_i2c(struct exynos_dp_device *dp,
97 unsigned int device_addr,
98 unsigned int reg_addr,
100 int exynos_dp_read_bytes_from_i2c(struct exynos_dp_device *dp,
101 unsigned int device_addr,
102 unsigned int reg_addr,
104 unsigned char edid[]);
105 void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
106 void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
107 void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
108 void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
109 void exynos_dp_set_link_bandwidth(struct exynos_dp_device *dp, u32 bwtype);
110 void exynos_dp_get_link_bandwidth(struct exynos_dp_device *dp, u32 *bwtype);
111 void exynos_dp_set_lane_count(struct exynos_dp_device *dp, u32 count);
112 void exynos_dp_get_lane_count(struct exynos_dp_device *dp, u32 *count);
113 void exynos_dp_enable_enhanced_mode(struct exynos_dp_device *dp, bool enable);
114 void exynos_dp_set_training_pattern(struct exynos_dp_device *dp,
115 enum pattern_set pattern);
116 void exynos_dp_set_lane0_pre_emphasis(struct exynos_dp_device *dp, u32 level);
117 void exynos_dp_set_lane1_pre_emphasis(struct exynos_dp_device *dp, u32 level);
118 void exynos_dp_set_lane2_pre_emphasis(struct exynos_dp_device *dp, u32 level);
119 void exynos_dp_set_lane3_pre_emphasis(struct exynos_dp_device *dp, u32 level);
120 void exynos_dp_set_lane0_link_training(struct exynos_dp_device *dp,
122 void exynos_dp_set_lane1_link_training(struct exynos_dp_device *dp,
124 void exynos_dp_set_lane2_link_training(struct exynos_dp_device *dp,
126 void exynos_dp_set_lane3_link_training(struct exynos_dp_device *dp,
128 u32 exynos_dp_get_lane0_link_training(struct exynos_dp_device *dp);
129 u32 exynos_dp_get_lane1_link_training(struct exynos_dp_device *dp);
130 u32 exynos_dp_get_lane2_link_training(struct exynos_dp_device *dp);
131 u32 exynos_dp_get_lane3_link_training(struct exynos_dp_device *dp);
132 void exynos_dp_reset_macro(struct exynos_dp_device *dp);
133 int exynos_dp_init_video(struct exynos_dp_device *dp);
135 void exynos_dp_set_video_color_format(struct exynos_dp_device *dp);
136 int exynos_dp_is_slave_video_stream_clock_on(struct exynos_dp_device *dp);
137 void exynos_dp_set_video_cr_mn(struct exynos_dp_device *dp,
138 enum clock_recovery_m_value_type type,
141 void exynos_dp_set_video_timing_mode(struct exynos_dp_device *dp, u32 type);
142 void exynos_dp_enable_video_master(struct exynos_dp_device *dp, bool enable);
143 void exynos_dp_start_video(struct exynos_dp_device *dp);
144 int exynos_dp_is_video_stream_on(struct exynos_dp_device *dp);
145 void exynos_dp_config_video_slave_mode(struct exynos_dp_device *dp);
146 void exynos_dp_enable_scrambling(struct exynos_dp_device *dp);
147 void exynos_dp_disable_scrambling(struct exynos_dp_device *dp);
149 int exynos_dp_enable_hw_link_training(struct exynos_dp_device *dp);
151 /* I2C EDID Chip ID, Slave Address */
152 #define I2C_EDID_DEVICE_ADDR 0x50
153 #define I2C_E_EDID_DEVICE_ADDR 0x30
155 #define EDID_BLOCK_LENGTH 0x80
156 #define EDID_HEADER_PATTERN 0x00
157 #define EDID_EXTENSION_FLAG 0x7e
158 #define EDID_CHECKSUM 0x7f
160 /* Definition for DPCD Register */
161 #define DPCD_ADDR_DPCD_REV 0x0000
162 #define DPCD_ADDR_MAX_LINK_RATE 0x0001
163 #define DPCD_ADDR_MAX_LANE_COUNT 0x0002
164 #define DPCD_ADDR_LINK_BW_SET 0x0100
165 #define DPCD_ADDR_LANE_COUNT_SET 0x0101
166 #define DPCD_ADDR_TRAINING_PATTERN_SET 0x0102
167 #define DPCD_ADDR_TRAINING_LANE0_SET 0x0103
168 #define DPCD_ADDR_LANE0_1_STATUS 0x0202
169 #define DPCD_ADDR_LANE_ALIGN__STATUS_UPDATED 0x0204
170 #define DPCD_ADDR_ADJUST_REQUEST_LANE0_1 0x0206
171 #define DPCD_ADDR_ADJUST_REQUEST_LANE2_3 0x0207
172 #define DPCD_ADDR_TEST_REQUEST 0x0218
173 #define DPCD_ADDR_TEST_RESPONSE 0x0260
174 #define DPCD_ADDR_TEST_EDID_CHECKSUM 0x0261
175 #define DPCD_ADDR_SINK_POWER_STATE 0x0600
177 /* DPCD_ADDR_MAX_LANE_COUNT */
178 #define DPCD_ENHANCED_FRAME_CAP(x) (((x) >> 7) & 0x1)
179 #define DPCD_MAX_LANE_COUNT(x) ((x) & 0x1f)
181 /* DPCD_ADDR_LANE_COUNT_SET */
182 #define DPCD_ENHANCED_FRAME_EN (0x1 << 7)
183 #define DPCD_LANE_COUNT_SET(x) ((x) & 0x1f)
185 /* DPCD_ADDR_TRAINING_PATTERN_SET */
186 #define DPCD_SCRAMBLING_DISABLED (0x1 << 5)
187 #define DPCD_SCRAMBLING_ENABLED (0x0 << 5)
188 #define DPCD_TRAINING_PATTERN_2 (0x2 << 0)
189 #define DPCD_TRAINING_PATTERN_1 (0x1 << 0)
190 #define DPCD_TRAINING_PATTERN_DISABLED (0x0 << 0)
192 /* DPCD_ADDR_TRAINING_LANE0_SET */
193 #define DPCD_MAX_PRE_EMPHASIS_REACHED (0x1 << 5)
194 #define DPCD_PRE_EMPHASIS_SET(x) (((x) & 0x3) << 3)
195 #define DPCD_PRE_EMPHASIS_GET(x) (((x) >> 3) & 0x3)
196 #define DPCD_PRE_EMPHASIS_PATTERN2_LEVEL0 (0x0 << 3)
197 #define DPCD_MAX_SWING_REACHED (0x1 << 2)
198 #define DPCD_VOLTAGE_SWING_SET(x) (((x) & 0x3) << 0)
199 #define DPCD_VOLTAGE_SWING_GET(x) (((x) >> 0) & 0x3)
200 #define DPCD_VOLTAGE_SWING_PATTERN1_LEVEL0 (0x0 << 0)
202 /* DPCD_ADDR_LANE0_1_STATUS */
203 #define DPCD_LANE_SYMBOL_LOCKED (0x1 << 2)
204 #define DPCD_LANE_CHANNEL_EQ_DONE (0x1 << 1)
205 #define DPCD_LANE_CR_DONE (0x1 << 0)
206 #define DPCD_CHANNEL_EQ_BITS (DPCD_LANE_CR_DONE| \
207 DPCD_LANE_CHANNEL_EQ_DONE|\
208 DPCD_LANE_SYMBOL_LOCKED)
210 /* DPCD_ADDR_LANE_ALIGN__STATUS_UPDATED */
211 #define DPCD_LINK_STATUS_UPDATED (0x1 << 7)
212 #define DPCD_DOWNSTREAM_PORT_STATUS_CHANGED (0x1 << 6)
213 #define DPCD_INTERLANE_ALIGN_DONE (0x1 << 0)
215 /* DPCD_ADDR_TEST_REQUEST */
216 #define DPCD_TEST_EDID_READ (0x1 << 2)
218 /* DPCD_ADDR_TEST_RESPONSE */
219 #define DPCD_TEST_EDID_CHECKSUM_WRITE (0x1 << 2)
221 /* DPCD_ADDR_SINK_POWER_STATE */
222 #define DPCD_SET_POWER_STATE_D0 (0x1 << 0)
223 #define DPCD_SET_POWER_STATE_D4 (0x2 << 0)
225 #endif /* _EXYNOS_DP_CORE_H */