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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Russell King
4 */
5#ifndef ARMADA_DRM_H
6#define ARMADA_DRM_H
7
8#include <linux/kfifo.h>
9#include <linux/io.h>
10#include <linux/workqueue.h>
11
12#include <drm/drm_device.h>
13#include <drm/drm_mm.h>
14
15struct armada_crtc;
16struct armada_gem_object;
17struct clk;
18struct drm_display_mode;
19struct drm_fb_helper;
20struct drm_fb_helper_surface_size;
21
22static inline void
23armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)
24{
25 uint32_t ov, v;
26
27 ov = v = readl_relaxed(ptr);
28 v = (v & ~mask) | val;
29 if (ov != v)
30 writel_relaxed(v, ptr);
31}
32
33static inline uint32_t armada_pitch(uint32_t width, uint32_t bpp)
34{
35 uint32_t pitch = bpp != 4 ? width * ((bpp + 7) / 8) : width / 2;
36
37 /* 88AP510 spec recommends pitch be a multiple of 128 */
38 return ALIGN(pitch, 128);
39}
40
41
42struct armada_private;
43
44struct armada_variant {
45 bool has_spu_adv_reg;
46 int (*init)(struct armada_crtc *, struct device *);
47 int (*compute_clock)(struct armada_crtc *,
48 const struct drm_display_mode *,
49 uint32_t *);
50 void (*disable)(struct armada_crtc *);
51 void (*enable)(struct armada_crtc *, const struct drm_display_mode *);
52};
53
54/* Variant ops */
55extern const struct armada_variant armada510_ops;
56
57struct armada_private {
58 struct drm_device drm;
59 struct armada_crtc *dcrtc[2];
60 struct drm_mm linear; /* protected by linear_lock */
61 struct mutex linear_lock;
62 struct drm_property *colorkey_prop;
63 struct drm_property *colorkey_min_prop;
64 struct drm_property *colorkey_max_prop;
65 struct drm_property *colorkey_val_prop;
66 struct drm_property *colorkey_alpha_prop;
67 struct drm_property *colorkey_mode_prop;
68 struct drm_property *brightness_prop;
69 struct drm_property *contrast_prop;
70 struct drm_property *saturation_prop;
71#ifdef CONFIG_DEBUG_FS
72 struct dentry *de;
73#endif
74};
75
76#define drm_to_armada_dev(dev) container_of(dev, struct armada_private, drm)
77
78#if defined(CONFIG_DRM_FBDEV_EMULATION)
79int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,
80 struct drm_fb_helper_surface_size *sizes);
81#define ARMADA_FBDEV_DRIVER_OPS \
82 .fbdev_probe = armada_fbdev_driver_fbdev_probe
83#else
84#define ARMADA_FBDEV_DRIVER_OPS \
85 .fbdev_probe = NULL
86#endif
87
88int armada_overlay_plane_create(struct drm_device *, unsigned long);
89
90void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc);
91int armada_drm_debugfs_init(struct drm_minor *);
92
93#endif