diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/analogix/analogix_dp_core.h')
| -rw-r--r-- | drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h new file mode 100644 index 000000000000..0fff7451e3df --- /dev/null +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -0,0 +1,277 @@ +/* + * Header file for Analogix DP (Display Port) core 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 _ANALOGIX_DP_CORE_H +#define _ANALOGIX_DP_CORE_H + +#include <drm/drm_crtc.h> +#include <drm/drm_dp_helper.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 analogix_dp_device { + struct drm_encoder *encoder; + struct device *dev; + struct drm_device *drm_dev; + struct drm_connector connector; + 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 analogix_dp_plat_data *plat_data; +}; + +/* analogix_dp_reg.c */ +void analogix_dp_enable_video_mute(struct analogix_dp_device *dp, bool enable); +void analogix_dp_stop_video(struct analogix_dp_device *dp); +void analogix_dp_lane_swap(struct analogix_dp_device *dp, bool enable); +void analogix_dp_init_analog_param(struct analogix_dp_device *dp); +void analogix_dp_init_interrupt(struct analogix_dp_device *dp); +void analogix_dp_reset(struct analogix_dp_device *dp); +void analogix_dp_swreset(struct analogix_dp_device *dp); +void analogix_dp_config_interrupt(struct analogix_dp_device *dp); +enum pll_status analogix_dp_get_pll_lock_status(struct analogix_dp_device *dp); +void analogix_dp_set_pll_power_down(struct analogix_dp_device *dp, bool enable); +void analogix_dp_set_analog_power_down(struct analogix_dp_device *dp, + enum analog_power_block block, + bool enable); +void analogix_dp_init_analog_func(struct analogix_dp_device *dp); +void analogix_dp_init_hpd(struct analogix_dp_device *dp); +enum dp_irq_type analogix_dp_get_irq_type(struct analogix_dp_device *dp); +void analogix_dp_clear_hotplug_interrupts(struct analogix_dp_device *dp); +void analogix_dp_reset_aux(struct analogix_dp_device *dp); +void analogix_dp_init_aux(struct analogix_dp_device *dp); +int analogix_dp_get_plug_in_status(struct analogix_dp_device *dp); +void analogix_dp_enable_sw_function(struct analogix_dp_device *dp); +int analogix_dp_start_aux_transaction(struct analogix_dp_device *dp); +int analogix_dp_write_byte_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char data); +int analogix_dp_read_byte_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned char *data); +int analogix_dp_write_bytes_to_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +int analogix_dp_read_bytes_from_dpcd(struct analogix_dp_device *dp, + unsigned int reg_addr, + unsigned int count, + unsigned char data[]); +int analogix_dp_select_i2c_device(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr); +int analogix_dp_read_byte_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int *data); +int analogix_dp_read_bytes_from_i2c(struct analogix_dp_device *dp, + unsigned int device_addr, + unsigned int reg_addr, + unsigned int count, + unsigned char edid[]); +void analogix_dp_set_link_bandwidth(struct analogix_dp_device *dp, u32 bwtype); +void analogix_dp_get_link_bandwidth(struct analogix_dp_device *dp, u32 *bwtype); +void analogix_dp_set_lane_count(struct analogix_dp_device *dp, u32 count); +void analogix_dp_get_lane_count(struct analogix_dp_device *dp, u32 *count); +void analogix_dp_enable_enhanced_mode(struct analogix_dp_device *dp, bool enable); +void analogix_dp_set_training_pattern(struct analogix_dp_device *dp, + enum pattern_set pattern); +void analogix_dp_set_lane0_pre_emphasis(struct analogix_dp_device *dp, u32 level); +void analogix_dp_set_lane1_pre_emphasis(struct analogix_dp_device *dp, u32 level); +void analogix_dp_set_lane2_pre_emphasis(struct analogix_dp_device *dp, u32 level); +void analogix_dp_set_lane3_pre_emphasis(struct analogix_dp_device *dp, u32 level); +void analogix_dp_set_lane0_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane1_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane2_link_training(struct analogix_dp_device *dp, + u32 training_lane); +void analogix_dp_set_lane3_link_training(struct analogix_dp_device *dp, + u32 training_lane); +u32 analogix_dp_get_lane0_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane1_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane2_link_training(struct analogix_dp_device *dp); +u32 analogix_dp_get_lane3_link_training(struct analogix_dp_device *dp); +void analogix_dp_reset_macro(struct analogix_dp_device *dp); +void analogix_dp_init_video(struct analogix_dp_device *dp); + +void analogix_dp_set_video_color_format(struct analogix_dp_device *dp); +int analogix_dp_is_slave_video_stream_clock_on(struct analogix_dp_device *dp); +void analogix_dp_set_video_cr_mn(struct analogix_dp_device *dp, + enum clock_recovery_m_value_type type, + u32 m_value, + u32 n_value); +void analogix_dp_set_video_timing_mode(struct analogix_dp_device *dp, u32 type); +void analogix_dp_enable_video_master(struct analogix_dp_device *dp, bool enable); +void analogix_dp_start_video(struct analogix_dp_device *dp); +int analogix_dp_is_video_stream_on(struct analogix_dp_device *dp); +void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp); +void analogix_dp_enable_scrambling(struct analogix_dp_device *dp); +void analogix_dp_disable_scrambling(struct analogix_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 /* _ANALOGIX_DP_CORE_H */ |