1 /*
2  * Copyright (C) 2012 Russell King
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 #ifndef ARMADA_DRM_H
9 #define ARMADA_DRM_H
10 
11 #include <linux/kfifo.h>
12 #include <linux/io.h>
13 #include <linux/workqueue.h>
14 #include <drm/drmP.h>
15 
16 struct armada_crtc;
17 struct armada_gem_object;
18 struct clk;
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 	uint32_t 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 };
51 
52 /* Variant ops */
53 extern const struct armada_variant armada510_ops;
54 
55 struct armada_private {
56 	struct drm_device	drm;
57 	struct work_struct	fb_unref_work;
58 	DECLARE_KFIFO(fb_unref, struct drm_framebuffer *, 8);
59 	struct drm_fb_helper	*fbdev;
60 	struct armada_crtc	*dcrtc[2];
61 	struct drm_mm		linear; /* protected by linear_lock */
62 	struct mutex		linear_lock;
63 	struct drm_property	*csc_yuv_prop;
64 	struct drm_property	*csc_rgb_prop;
65 	struct drm_property	*colorkey_prop;
66 	struct drm_property	*colorkey_min_prop;
67 	struct drm_property	*colorkey_max_prop;
68 	struct drm_property	*colorkey_val_prop;
69 	struct drm_property	*colorkey_alpha_prop;
70 	struct drm_property	*colorkey_mode_prop;
71 	struct drm_property	*brightness_prop;
72 	struct drm_property	*contrast_prop;
73 	struct drm_property	*saturation_prop;
74 #ifdef CONFIG_DEBUG_FS
75 	struct dentry		*de;
76 #endif
77 };
78 
79 void __armada_drm_queue_unref_work(struct drm_device *,
80 	struct drm_framebuffer *);
81 void armada_drm_queue_unref_work(struct drm_device *,
82 	struct drm_framebuffer *);
83 
84 extern const struct drm_mode_config_funcs armada_drm_mode_config_funcs;
85 
86 int armada_fbdev_init(struct drm_device *);
87 void armada_fbdev_fini(struct drm_device *);
88 
89 int armada_overlay_plane_create(struct drm_device *, unsigned long);
90 
91 int armada_drm_debugfs_init(struct drm_minor *);
92 
93 #endif
94