drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.h

/* SPDX-License-Identifier: MIT */
/*
 * Copyright 2019 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: AMD
 *
 */

#ifndef AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_
#define AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_

#include "dc_types.h"

struct drm_crtc;
struct dm_crtc_state;
struct amdgpu_device;

enum amdgpu_dm_pipe_crc_source {
	AMDGPU_DM_PIPE_CRC_SOURCE_NONE = 0,
	AMDGPU_DM_PIPE_CRC_SOURCE_CRTC,
	AMDGPU_DM_PIPE_CRC_SOURCE_CRTC_DITHER,
	AMDGPU_DM_PIPE_CRC_SOURCE_DPRX,
	AMDGPU_DM_PIPE_CRC_SOURCE_DPRX_DITHER,
	AMDGPU_DM_PIPE_CRC_SOURCE_MAX,
	AMDGPU_DM_PIPE_CRC_SOURCE_INVALID = -1,
};

#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
#define MAX_CRTC 6

enum secure_display_mode {
	/* via dmub + psp */
	LEGACY_MODE = 0,
	/* driver directly */
	DISPLAY_CRC_MODE,
	SECURE_DISPLAY_MODE_MAX,
};

struct phy_id_mapping {
	bool assigned;
	bool is_mst;
	uint8_t enc_hw_inst;
	u8 lct;
	u8 port_num;
	u8 rad[8];
};

struct crc_data {
	uint32_t crc_R;
	uint32_t crc_G;
	uint32_t crc_B;
	uint32_t frame_count;
	bool crc_ready;
};

struct crc_info {
	struct crc_data crc[MAX_CRC_WINDOW_NUM];
	spinlock_t lock;
};

struct crc_window_param {
	uint16_t x_start;
	uint16_t y_start;
	uint16_t x_end;
	uint16_t y_end;
	/* CRC window is activated or not*/
	bool enable;
	/* Update crc window during vertical blank or not */
	bool update_win;
	/* skip reading/writing for few frames */
	int skip_frame_cnt;
};

struct secure_display_crtc_context {
	/* work to notify PSP TA*/
	struct work_struct notify_ta_work;

	/* work to forward ROI to dmcu/dmub */
	struct work_struct forward_roi_work;

	struct drm_crtc *crtc;

	/* Region of Interest (ROI) */
	struct crc_window roi[MAX_CRC_WINDOW_NUM];

	struct crc_info crc_info;
};

struct secure_display_context {

	struct secure_display_crtc_context *crtc_ctx;
    /* Whether dmub support multiple ROI setting */
	bool support_mul_roi;
	enum secure_display_mode op_mode;
	bool phy_mapping_updated;
	int phy_id_mapping_cnt;
	struct phy_id_mapping phy_id_mapping[MAX_CRTC];
};
#endif

static inline bool amdgpu_dm_is_valid_crc_source(enum amdgpu_dm_pipe_crc_source source)
{
	return (source > AMDGPU_DM_PIPE_CRC_SOURCE_NONE) &&
	       (source < AMDGPU_DM_PIPE_CRC_SOURCE_MAX);
}

/* amdgpu_dm_crc.c */
#ifdef CONFIG_DEBUG_FS
int amdgpu_dm_crtc_configure_crc_source(struct drm_crtc *crtc,
					struct dm_crtc_state *dm_crtc_state,
					enum amdgpu_dm_pipe_crc_source source);
int amdgpu_dm_crtc_set_crc_source(struct drm_crtc *crtc, const char *src_name);
int amdgpu_dm_crtc_verify_crc_source(struct drm_crtc *crtc,
				     const char *src_name,
				     size_t *values_cnt);
const char *const *amdgpu_dm_crtc_get_crc_sources(struct drm_crtc *crtc,
						  size_t *count);
void amdgpu_dm_crtc_handle_crc_irq(struct drm_crtc *crtc);
#else
#define amdgpu_dm_crtc_set_crc_source NULL
#define amdgpu_dm_crtc_verify_crc_source NULL
#define amdgpu_dm_crtc_get_crc_sources NULL
#define amdgpu_dm_crtc_handle_crc_irq(x)
#endif

#ifdef CONFIG_DRM_AMD_SECURE_DISPLAY
bool amdgpu_dm_crc_window_is_activated(struct drm_crtc *crtc);
void amdgpu_dm_crtc_handle_crc_window_irq(struct drm_crtc *crtc);
void amdgpu_dm_crtc_secure_display_create_contexts(struct amdgpu_device *adev);
#else
#define amdgpu_dm_crc_window_is_activated(x)
#define amdgpu_dm_crtc_handle_crc_window_irq(x)
#define amdgpu_dm_crtc_secure_display_create_contexts(x)
#endif

#if IS_ENABLED(CONFIG_DRM_AMD_DC_KUNIT_TEST)
enum amdgpu_dm_pipe_crc_source dm_parse_crc_source(const char *source);
bool dm_is_crc_source_crtc(enum amdgpu_dm_pipe_crc_source src);
bool dm_is_crc_source_dprx(enum amdgpu_dm_pipe_crc_source src);
bool dm_need_crc_dither(enum amdgpu_dm_pipe_crc_source src);
bool dm_need_dp_aux(enum amdgpu_dm_pipe_crc_source source,
		    enum amdgpu_dm_pipe_crc_source cur_crc_src);
bool dm_crc_source_should_start_dprx(enum amdgpu_dm_pipe_crc_source source,
				      enum amdgpu_dm_pipe_crc_source cur_crc_src);
bool dm_crc_source_should_stop_dprx(enum amdgpu_dm_pipe_crc_source source,
				     enum amdgpu_dm_pipe_crc_source cur_crc_src);
#endif

#endif /* AMD_DAL_DEV_AMDGPU_DM_AMDGPU_DM_CRC_H_ */