drm/amd/display: Introduce power module on Linux

[Why]

Other OS supported by DC uses the power module to manage panel power
features such as backlight and self-refresh. It contains enhancements
on top what amdgpu_dm is doing today that can benefit power.

[How]

Introduce the power module. It's currently not being used anywhere, a
future change will incorporate it into amdgpu_dm.

Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Signed-off-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c

@@ -62,3 +62,14 @@ void dm_trace_smu_exit(bool success, uint32_t response, struct dc_context *ctx)
 }
 
 /**** power component interfaces ****/
+
+bool dm_query_extended_brightness_caps(struct dc_context *ctx,
+	enum dm_acpi_display_type display,
+	struct dm_acpi_atif_backlight_caps *pCaps)
+{
+	/*
+	 * TODO: Implement query for extended backlight caps.
+	 * Some plumbing required, see amdgpu_atif_query_backlight_caps()
+	 */
+	return false;
+}

drivers/gpu/drm/amd/display/dc/core/dc_stream.c

@@ -259,6 +259,12 @@ const struct dc_stream_status *dc_stream_get_status_const(
 	return dc_state_get_stream_status(dc->current_state, stream);
 }
 
+struct dc_link *dc_stream_get_link(
+	const struct dc_stream_state *stream)
+{
+	return stream->link;
+}
+
 void program_cursor_attributes(
 	struct dc *dc,
 	struct dc_stream_state *stream)

drivers/gpu/drm/amd/display/dc/dc_stream.h

@@ -494,6 +494,9 @@ struct surface_update_descriptor dc_check_update_surfaces_for_stream(
 		int surface_count,
 		struct dc_stream_update *stream_update);
 
+struct dc_link *dc_stream_get_link(
+	const struct dc_stream_state *dc_stream);
+
 /**
  * Create a new default stream for the requested sink
  */

drivers/gpu/drm/amd/display/modules/inc/mod_power.h

@@ -0,0 +1,415 @@
+/* Copyright (c) 2019 Advanced Micro Devices, Inc. All rights reserved. */
+
+#ifndef MODULES_INC_MOD_POWER_H_
+#define MODULES_INC_MOD_POWER_H_
+
+#include "dm_services.h"
+
+struct mod_power_init_params {
+
+	bool disable_fractional_pwm;
+
+	/* Use nits based brightness instead of brightness percentage
+	 */
+	bool use_nits_based_brightness;
+	unsigned int panel_min_millinits;
+	unsigned int panel_max_millinits;
+
+	unsigned int min_backlight_pwm;
+	unsigned int max_backlight_pwm;
+
+	unsigned int min_abm_backlight;
+	unsigned int num_backlight_levels;
+	bool backlight_ramping_override;
+	unsigned int backlight_ramping_reduction;
+	unsigned int backlight_ramping_start;
+	bool def_varibright_enable;
+	unsigned int def_varibright_level;
+	unsigned int varibright_level;
+	unsigned int abm_config_setting;
+
+	bool allow_psr_smu_optimizations;
+
+	bool allow_psr_multi_disp_optimizations;
+
+	bool use_custom_backlight_caps;
+	unsigned int custom_backlight_caps_config_no;
+	bool use_linear_backlight_curve;
+};
+
+struct mod_power {
+	int dummy;
+};
+
+/* VariBright settings structure */
+struct varibright_info {
+	unsigned int level;
+	bool enable;
+	bool activate;
+};
+
+struct mod_power_psr_context {
+    /* ddc line */
+    unsigned int channel;
+    /* Transmitter id */
+    unsigned int transmitter_id;
+    /* Engine Id is used for Dig Be source select */
+    unsigned int engine_id;
+    /* Controller Id used for Dig Fe source select */
+    unsigned int controller_id;
+    /* Pcie or Uniphy */
+    unsigned int phy_type;
+    /* Physical PHY Id used by SMU interpretation */
+    unsigned int smu_phy_id;
+    /* Vertical total pixels from crtc timing.
+     * This is used for static screen detection.
+     * ie. If we want to detect half a frame,
+     * we use this to determine the hyst lines.
+     */
+    unsigned int crtc_timing_vertical_total;
+    /* PSR supported from panel capabilities and
+     * current display configuration
+     */
+    bool psr_supported_display_config;
+    /* Whether fast link training is supported by the panel */
+    bool psr_exit_link_training_required;
+    /* If RFB setup time is greater than the total VBLANK time,
+     * it is not possible for the sink to capture the video frame
+     * in the same frame the SDP is sent. In this case,
+     * the frame capture indication bit should be set and an extra
+     * static frame should be transmitted to the sink.
+     */
+    bool psr_frame_capture_indication_req;
+    /* Set the last possible line SDP may be transmitted without violating
+     * the RFB setup time or entering the active video frame.
+     */
+    unsigned int sdp_transmit_line_num_deadline;
+    /* The VSync rate in Hz used to calculate the
+     * step size for smooth brightness feature
+     */
+    unsigned int vsync_rate_hz;
+    unsigned int skip_psr_wait_for_pll_lock;
+    unsigned int number_of_controllers;
+    /* Unused, for future use. To indicate that first changed frame from
+     * state3 shouldn't result in psr_inactive, but rather to perform
+     * an automatic single frame rfb_update.
+     */
+    bool rfb_update_auto_en;
+    /* Number of frame before entering static screen */
+    unsigned int timehyst_frames;
+    /* Partial frames before entering static screen */
+    unsigned int hyst_lines;
+    /* # of repeated AUX transaction attempts to make before
+     * indicating failure to the driver
+     */
+    unsigned int aux_repeats;
+    /* Controls hw blocks to power down during PSR active state */
+    unsigned int psr_level;
+    /* Controls additional delay after remote frame capture before
+     * continuing powerd own
+     */
+	unsigned int frame_delay;
+	bool allow_smu_optimizations;
+	bool allow_multi_disp_optimizations;
+	unsigned int line_time_in_us;
+	/* Panel self refresh 2 selective update granularity required */
+	bool su_granularity_required;
+	/* psr2 selective update y granularity capability */
+	uint8_t su_y_granularity;
+	uint8_t rate_control_caps;
+	bool os_request_force_ffu;
+};
+
+enum psr_event {
+	psr_event_invalid = 0x0,
+	psr_event_vsync = 0x1,
+	psr_event_full_screen = 0x2,
+	psr_event_defer_enable = 0x4,
+	psr_event_hw_programming = 0x8,
+	psr_event_test_harness_enable_psr = 0x10,
+	psr_event_test_harness_disable_psr = 0x20,
+	psr_event_mpo_video_selective_update = 0x40,
+	psr_event_edp_panel_off_disable_psr = 0x80,
+	psr_event_dynamic_display_switch = 0x100,
+	psr_event_big_screen_video = 0x200,
+	psr_event_dds_defer_stream_enable = 0x800,
+	psr_event_dynamic_link_rate_control = 0x1000,
+	psr_event_vrr_transition = 0x2000,
+	psr_event_pause = 0x4000,
+	psr_event_immediate_flip = 0x8000,
+	psr_event_os_request_disable = 0x10000,
+	psr_event_os_request_force_ffu = 0x20000,
+	psr_event_os_override_hold = 0x40000,
+	psr_event_crc_window_active = 0x80000,
+};
+
+enum replay_event {
+	replay_event_invalid = 0x0,
+	replay_event_vsync = 0x1,
+	replay_event_full_screen = 0x2,
+	replay_event_mpo_video_selective_update = 0x4,
+	replay_event_big_screen_video = 0x8,
+	replay_event_hw_programming = 0x10,
+	replay_event_edp_panel_off_disable_psr = 0x20,
+	replay_event_general_ui = 0x40,
+	replay_event_vrr = 0x80,
+	replay_event_prepare_vtotal = 0x100,
+	replay_event_test_harness_enable_replay = 0x200,
+	replay_event_test_harness_disable_replay = 0x400,
+	replay_event_test_harness_ultra_sleep = 0x800,
+	replay_event_immediate_flip = 0x1000,
+	replay_event_vrr_transition = 0x2000,
+	replay_event_pause = 0x4000,
+	replay_event_disable_replay_while_DPMS = 0x8000,
+	replay_event_test_harness_mode = 0x10000,
+	replay_event_cursor_updating = 0x20000,
+	replay_event_sleep_resume = 0x40000,
+	replay_event_disable_in_AC = 0x80000,
+	replay_event_disable_replay_while_detect_display = 0x100000,
+	replay_event_disable_replay_while_switching_mux = 0x400000,
+	replay_event_infopacket = 0x800000,
+	replay_event_os_request_disable = 0x1000000,
+	replay_event_os_request_force_ffu = 0x2000000,
+	replay_event_os_override_hold = 0x4000000,
+	replay_event_crc_window_active = 0x8000000,
+};
+
+enum replay_enable_option {
+	pr_enable_option_static_screen = 0x1,
+	pr_enable_option_mpo_video = 0x2,
+	pr_enable_option_full_screen_video = 0x4,
+	pr_enable_option_general_ui = 0x8,
+	pr_enable_option_full_screen = 0x10,
+	pr_enable_option_static_screen_coasting = 0x10000,
+	pr_enable_option_mpo_video_coasting = 0x20000,
+	pr_enable_option_full_screen_video_coasting = 0x40000,
+	pr_enable_option_full_screen_coasting = 0x100000,
+};
+
+struct mod_power *mod_power_create(struct dc *dc,
+		struct mod_power_init_params *init_params,
+		unsigned int edp_num);
+
+void mod_power_destroy(struct mod_power *mod_power);
+
+bool mod_power_hw_init(struct mod_power *mod_power);
+
+bool mod_power_add_stream(struct mod_power *mod_power,
+		struct dc_stream_state *stream, struct psr_caps *caps);
+
+bool mod_power_remove_stream(struct mod_power *mod_power,
+		const struct dc_stream_state *stream);
+
+bool mod_power_replace_stream(struct mod_power *mod_power,
+		const struct dc_stream_state *current_stream,
+		struct dc_stream_state *new_stream,
+		struct psr_caps *new_caps);
+
+bool mod_power_set_backlight_nits(struct mod_power *mod_power,
+		struct dc_stream_state *streams,
+		unsigned int backlight_millinit,
+		unsigned int transition_time_millisec,
+		bool skip_aux,
+		bool is_hdr);
+
+bool mod_power_set_backlight_percent(struct mod_power *mod_power,
+		struct dc_stream_state *stream,
+		unsigned int backlight_millipercent,
+		unsigned int transition_time_millisec,
+		bool is_hdr);
+
+void mod_power_update_backlight(struct mod_power *mod_power,
+		struct dc_stream_state *stream,
+		unsigned int backlight_millipercent);
+
+void mod_power_update_backlight_nits(struct mod_power *mod_power,
+		struct dc_stream_state *stream,
+		unsigned int backlight_millinit);
+
+bool mod_power_get_backlight_pwm(struct mod_power *mod_power,
+		unsigned int *backlight_pwm,
+		unsigned int inst);
+
+bool mod_power_get_backlight_nits(struct mod_power *mod_power,
+		unsigned int *backlight_millinit,
+		unsigned int inst);
+
+bool mod_power_get_backlight_percent(struct mod_power *mod_power,
+		unsigned int *backlight_millipercent,
+		unsigned int inst);
+
+bool mod_power_get_hw_target_backlight_pwm_nits(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight_millinit,
+		unsigned int inst);
+
+bool mod_power_get_hw_target_backlight_pwm_percent(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight_millipercent,
+		unsigned int inst);
+
+bool mod_power_get_hw_target_backlight_pwm(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight_u16_16);
+
+bool mod_power_get_hw_backlight_pwm(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight);
+
+bool mod_power_get_hw_backlight_pwm_nits(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight_millinit,
+		unsigned int inst);
+
+bool mod_power_get_hw_backlight_aux_nits(
+		struct mod_power *mod_power,
+		struct dc_stream_state **streams, int num_streams,
+		unsigned int *backlight_millinit_avg,
+		unsigned int *backlight_millinit_peak);
+
+bool mod_power_get_hw_backlight_pwm_percent(
+		struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int *backlight_millipercent,
+		unsigned int inst);
+
+void mod_power_initialize_backlight_caps
+		(struct mod_power *mod_power);
+
+bool mod_power_get_panel_backlight_boundaries
+				(struct mod_power *mod_power,
+				unsigned int *out_min_backlight,
+				unsigned int *out_max_backlight,
+				unsigned int *out_ac_backlight_percent,
+				unsigned int *out_dc_backlight_percent,
+				unsigned int inst);
+
+bool mod_power_set_smooth_brightness(struct mod_power *mod_power,
+		bool enable_brightness,
+		unsigned int inst);
+
+bool mod_power_notify_mode_change(struct mod_power *mod_power,
+		const struct dc_stream_state *stream,
+		bool is_hdr);
+
+bool mod_power_get_varibright_level(struct mod_power *mod_power,
+		unsigned int *varibright_level);
+
+bool mod_power_get_varibright_hw_level(struct mod_power *mod_power,
+		unsigned int *varibright_level);
+
+bool mod_power_get_varibright_default_level(struct mod_power *mod_power,
+		unsigned int *varibright_level);
+
+bool mod_power_get_varibright_enable(struct mod_power *mod_power,
+		bool *varibright_enable);
+
+bool mod_power_varibright_activate(struct mod_power	*mod_power,
+		bool activate, struct dc_stream_update *stream_update);
+
+bool mod_power_varibright_feature_enable(struct mod_power *mod_power,
+		bool enable, struct dc_stream_update *stream_update);
+
+
+bool mod_power_varibright_set_level(struct mod_power *mod_power,
+		unsigned int level, struct dc_stream_update *stream_update);
+
+bool mod_power_varibright_set_hw_level(struct mod_power *mod_power,
+		unsigned int level,	struct dc_stream_update *stream_update);
+
+bool mod_power_is_abm_active(struct mod_power *mod_power,
+		const struct dc_link *link,
+		unsigned int inst);
+
+
+bool mod_power_set_psr_event(struct mod_power *mod_power,
+		struct dc_stream_state *stream, bool set_event,
+		enum psr_event event, bool wait);
+
+bool mod_power_get_psr_event(struct mod_power *mod_power,
+			struct dc_stream_state *stream,
+			unsigned int *active_psr_events);
+
+bool mod_power_get_psr_state(struct mod_power *mod_power,
+		const struct dc_stream_state *stream,
+		enum dc_psr_state *state);
+
+bool mod_power_get_psr_enabled_status(struct mod_power *mod_power,
+		const struct dc_stream_state *stream,
+		bool *psr_enabled);
+
+bool mod_power_set_replay_event(struct mod_power *mod_power,
+	struct dc_stream_state *stream, bool set_event,
+	enum replay_event event, bool wait_for_disable);
+
+bool mod_power_get_replay_event(struct mod_power *mod_power,
+	struct dc_stream_state *stream,
+	unsigned int *active_replay_events);
+
+bool mod_power_get_replay_active_status(const struct dc_stream_state *stream,
+	bool *replay_active);
+
+bool mod_power_replay_set_coasting_vtotal(struct mod_power *mod_power,
+	const struct dc_stream_state *stream,
+	uint32_t coasting_vtotal, uint16_t frame_skip_number);
+
+void mod_power_replay_residency(const struct dc_stream_state *stream,
+	unsigned int *residency, const bool is_start, const bool is_alpm);
+
+bool mod_power_replay_set_power_opt_and_coasting_vtotal(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, unsigned int active_replay_events, uint32_t coasting_vtotal,
+	bool is_ultra_sleep_mode, uint16_t frame_skip_number);
+
+void mod_power_replay_set_timing_sync_supported(struct mod_power *mod_power,
+	const struct dc_stream_state *stream);
+
+void mod_power_replay_disabled_adaptive_sync_sdp(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, bool force_disabled);
+
+void mod_power_replay_disabled_desync_error_detection(struct mod_power *mod_power,
+	const struct dc_stream_state *stream,  bool force_disabled);
+void mod_power_set_low_rr_activate(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, bool low_rr_supported);
+
+void mod_power_set_video_conferencing_activate(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, bool video_conferencing_activate);
+
+void mod_power_set_live_capture_with_cvt_activate(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, bool live_capture_with_cvt_activate);
+
+void mod_power_set_replay_continuously_resync(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, bool enable);
+
+void mod_power_set_coasting_vtotal_without_frame_update(struct mod_power *mod_power,
+	const struct dc_stream_state *stream, uint32_t coasting_vtotal);
+
+
+
+void mod_power_psr_residency(struct mod_power *mod_power,
+		const struct dc_stream_state *stream,
+		unsigned int *residency,
+		const uint8_t mode);
+bool mod_power_psr_get_active_psr_events(struct mod_power *mod_power,
+		const struct dc_stream_state *stream, unsigned int *active_psr_events);
+bool mod_power_psr_set_sink_vtotal_in_psr_active(struct mod_power *mod_power,
+		const struct dc_stream_state *stream,
+		uint16_t psr_vtotal_idle,
+		uint16_t psr_vtotal_su);
+
+
+
+bool mod_power_backlight_percent_to_nits(struct mod_power *mod_power,
+		struct dc_stream_state *stream,
+		unsigned int backlight_millipercent,
+		unsigned int *backlight_millinit);
+bool mod_power_backlight_nits_to_percent(struct mod_power *mod_power,
+		struct dc_stream_state *stream,
+		unsigned int backlight_millinit,
+		unsigned int *backlight_millipercent);
+
+#endif /* MODULES_INC_MOD_POWER_H_ */

drivers/gpu/drm/amd/display/modules/power/Makefile

@@ -23,7 +23,7 @@
 # Makefile for the 'power' sub-module of DAL.
 #
 
-MOD_POWER = power_helpers.o
+MOD_POWER = power_helpers.o power.o
 
 AMD_DAL_MOD_POWER = $(addprefix $(AMDDALPATH)/modules/power/,$(MOD_POWER))
 #$(info ************  DAL POWER MODULE MAKEFILE ************)