xref: /openbmc/linux/drivers/gpu/drm/xlnx/zynqmp_dpsub.h (revision ee1229b35d20d00ed13009d81401032de06ac58e)

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * ZynqMP DPSUB Subsystem Driver
 *
 * Copyright (C) 2017 - 2020 Xilinx, Inc.
 *
 * Authors:
 * - Hyun Woo Kwon <hyun.kwon@xilinx.com>
 * - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
 */

#ifndef _ZYNQMP_DPSUB_H_
#define _ZYNQMP_DPSUB_H_

#include <drm/drm_crtc.h>
#include <drm/drm_encoder.h>
#include <drm/drm_plane.h>

struct clk;
struct device;
struct drm_bridge;
struct drm_device;
struct zynqmp_disp;
struct zynqmp_disp_layer;
struct zynqmp_dp;

#define ZYNQMP_DPSUB_NUM_LAYERS				2

enum zynqmp_dpsub_format {
	ZYNQMP_DPSUB_FORMAT_RGB,
	ZYNQMP_DPSUB_FORMAT_YCRCB444,
	ZYNQMP_DPSUB_FORMAT_YCRCB422,
	ZYNQMP_DPSUB_FORMAT_YONLY,
};

/**
 * struct zynqmp_dpsub - ZynqMP DisplayPort Subsystem
 * @drm: The DRM/KMS device
 * @dev: The physical device
 * @apb_clk: The APB clock
 * @vid_clk: Video clock
 * @vid_clk_from_ps: True of the video clock comes from PS, false from PL
 * @aud_clk: Audio clock
 * @aud_clk_from_ps: True of the audio clock comes from PS, false from PL
 * @planes: The DRM planes
 * @crtc: The DRM CRTC
 * @encoder: The dummy DRM encoder
 * @bridge: The DP encoder bridge
 * @disp: The display controller
 * @dp: The DisplayPort controller
 * @dma_align: DMA alignment constraint (must be a power of 2)
 */
struct zynqmp_dpsub {
	struct drm_device drm;
	struct device *dev;

	struct clk *apb_clk;
	struct clk *vid_clk;
	bool vid_clk_from_ps;
	struct clk *aud_clk;
	bool aud_clk_from_ps;

	struct drm_plane planes[ZYNQMP_DPSUB_NUM_LAYERS];
	struct drm_crtc crtc;
	struct drm_encoder encoder;
	struct drm_bridge *bridge;

	struct zynqmp_disp *disp;
	struct zynqmp_disp_layer *layers[ZYNQMP_DPSUB_NUM_LAYERS];
	struct zynqmp_dp *dp;

	unsigned int dma_align;
};

static inline struct zynqmp_dpsub *to_zynqmp_dpsub(struct drm_device *drm)
{
	return container_of(drm, struct zynqmp_dpsub, drm);
}

bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub);
unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub);

#endif /* _ZYNQMP_DPSUB_H_ */