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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/drivers/gpu/drm/armada/armada_drm.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * Copyright (C) 2012 Russell King

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 */

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#ifndef ARMADA_DRM_H

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#define ARMADA_DRM_H

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#include <linux/kfifo.h>

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#include <linux/io.h>

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#include <linux/workqueue.h>

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#include <drm/drm_device.h>

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#include <drm/drm_mm.h>

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struct armada_crtc;

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struct armada_gem_object;

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struct clk;

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struct drm_display_mode;

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struct drm_fb_helper;

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struct drm_fb_helper_surface_size;

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static inline void

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armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)

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{

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	uint32_t ov, v;

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	ov = v = readl_relaxed(ptr);

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	v = (v & ~mask) | val;

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	if (ov != v)

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		writel_relaxed(v, ptr);

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}

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static inline uint32_t armada_pitch(uint32_t width, uint32_t bpp)

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{

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	uint32_t pitch = bpp != 4 ? width * ((bpp + 7) / 8) : width / 2;

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	/* 88AP510 spec recommends pitch be a multiple of 128 */

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	return ALIGN(pitch, 128);

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}

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struct armada_private;

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struct armada_variant {

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	bool has_spu_adv_reg;

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	int (*init)(struct armada_crtc *, struct device *);

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	int (*compute_clock)(struct armada_crtc *,

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			     const struct drm_display_mode *,

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			     uint32_t *);

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	void (*disable)(struct armada_crtc *);

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	void (*enable)(struct armada_crtc *, const struct drm_display_mode *);

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};

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/* Variant ops */

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extern const struct armada_variant armada510_ops;

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struct armada_private {

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	struct drm_device	drm;

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	struct armada_crtc	*dcrtc[2];

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	struct drm_mm		linear; /* protected by linear_lock */

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	struct mutex		linear_lock;

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	struct drm_property	*colorkey_prop;

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	struct drm_property	*colorkey_min_prop;

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	struct drm_property	*colorkey_max_prop;

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	struct drm_property	*colorkey_val_prop;

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	struct drm_property	*colorkey_alpha_prop;

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	struct drm_property	*colorkey_mode_prop;

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	struct drm_property	*brightness_prop;

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	struct drm_property	*contrast_prop;

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	struct drm_property	*saturation_prop;

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#ifdef CONFIG_DEBUG_FS

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	struct dentry		*de;

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#endif

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};

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#define drm_to_armada_dev(dev) container_of(dev, struct armada_private, drm)

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#if defined(CONFIG_DRM_FBDEV_EMULATION)

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int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,

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				    struct drm_fb_helper_surface_size *sizes);

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#define ARMADA_FBDEV_DRIVER_OPS \

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	.fbdev_probe = armada_fbdev_driver_fbdev_probe

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#else

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#define ARMADA_FBDEV_DRIVER_OPS \

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	.fbdev_probe = NULL

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#endif

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int armada_overlay_plane_create(struct drm_device *, unsigned long);

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void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc);

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int armada_drm_debugfs_init(struct drm_minor *);

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#endif

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