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 
15 struct armada_crtc;
16 struct armada_gem_object;
17 struct clk;
18 struct drm_display_mode;
19 struct drm_fb_helper;
20 
21 static inline void
22 armada_updatel(uint32_t val, uint32_t mask, void __iomem *ptr)
23 {
24 	uint32_t ov, v;
25 
26 	ov = v = readl_relaxed(ptr);
27 	v = (v & ~mask) | val;
28 	if (ov != v)
29 		writel_relaxed(v, ptr);
30 }
31 
32 static inline uint32_t armada_pitch(uint32_t width, uint32_t bpp)
33 {
34 	uint32_t pitch = bpp != 4 ? width * ((bpp + 7) / 8) : width / 2;
35 
36 	/* 88AP510 spec recommends pitch be a multiple of 128 */
37 	return ALIGN(pitch, 128);
38 }
39 
40 
41 struct armada_private;
42 
43 struct armada_variant {
44 	bool has_spu_adv_reg;
45 	int (*init)(struct armada_crtc *, struct device *);
46 	int (*compute_clock)(struct armada_crtc *,
47 			     const struct drm_display_mode *,
48 			     uint32_t *);
49 	void (*disable)(struct armada_crtc *);
50 	void (*enable)(struct armada_crtc *, const struct drm_display_mode *);
51 };
52 
53 /* Variant ops */
54 extern const struct armada_variant armada510_ops;
55 
56 struct armada_private {
57 	struct drm_device	drm;
58 	struct drm_fb_helper	*fbdev;
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 int armada_fbdev_init(struct drm_device *);
79 void armada_fbdev_fini(struct drm_device *);
80 
81 int armada_overlay_plane_create(struct drm_device *, unsigned long);
82 
83 void armada_drm_crtc_debugfs_init(struct armada_crtc *dcrtc);
84 int armada_drm_debugfs_init(struct drm_minor *);
85 
86 #endif
87