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
armada_updatel(uint32_t val,uint32_t mask,void __iomem * ptr)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
armada_pitch(uint32_t width,uint32_t bpp)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