1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* exynos_drm_drv.h
3  *
4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5  * Authors:
6  *	Inki Dae <inki.dae@samsung.com>
7  *	Joonyoung Shim <jy0922.shim@samsung.com>
8  *	Seung-Woo Kim <sw0312.kim@samsung.com>
9  */
10 
11 #ifndef _EXYNOS_DRM_DRV_H_
12 #define _EXYNOS_DRM_DRV_H_
13 
14 #include <linux/module.h>
15 
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_device.h>
18 #include <drm/drm_plane.h>
19 
20 #define MAX_CRTC	3
21 #define MAX_PLANE	5
22 #define MAX_FB_BUFFER	4
23 
24 #define DEFAULT_WIN	0
25 
26 struct drm_crtc_state;
27 struct drm_display_mode;
28 
29 #define to_exynos_crtc(x)	container_of(x, struct exynos_drm_crtc, base)
30 #define to_exynos_plane(x)	container_of(x, struct exynos_drm_plane, base)
31 
32 /* this enumerates display type. */
33 enum exynos_drm_output_type {
34 	EXYNOS_DISPLAY_TYPE_NONE,
35 	/* RGB or CPU Interface. */
36 	EXYNOS_DISPLAY_TYPE_LCD,
37 	/* HDMI Interface. */
38 	EXYNOS_DISPLAY_TYPE_HDMI,
39 	/* Virtual Display Interface. */
40 	EXYNOS_DISPLAY_TYPE_VIDI,
41 };
42 
43 struct exynos_drm_rect {
44 	unsigned int x, y;
45 	unsigned int w, h;
46 };
47 
48 /*
49  * Exynos drm plane state structure.
50  *
51  * @base: plane_state object (contains drm_framebuffer pointer)
52  * @src: rectangle of the source image data to be displayed (clipped to
53  *       visible part).
54  * @crtc: rectangle of the target image position on hardware screen
55  *       (clipped to visible part).
56  * @h_ratio: horizontal scaling ratio, 16.16 fixed point
57  * @v_ratio: vertical scaling ratio, 16.16 fixed point
58  *
59  * this structure consists plane state data that will be applied to hardware
60  * specific overlay info.
61  */
62 
63 struct exynos_drm_plane_state {
64 	struct drm_plane_state base;
65 	struct exynos_drm_rect crtc;
66 	struct exynos_drm_rect src;
67 	unsigned int h_ratio;
68 	unsigned int v_ratio;
69 };
70 
71 static inline struct exynos_drm_plane_state *
72 to_exynos_plane_state(struct drm_plane_state *state)
73 {
74 	return container_of(state, struct exynos_drm_plane_state, base);
75 }
76 
77 /*
78  * Exynos drm common overlay structure.
79  *
80  * @base: plane object
81  * @index: hardware index of the overlay layer
82  *
83  * this structure is common to exynos SoC and its contents would be copied
84  * to hardware specific overlay info.
85  */
86 
87 struct exynos_drm_plane {
88 	struct drm_plane base;
89 	const struct exynos_drm_plane_config *config;
90 	unsigned int index;
91 };
92 
93 #define EXYNOS_DRM_PLANE_CAP_DOUBLE	(1 << 0)
94 #define EXYNOS_DRM_PLANE_CAP_SCALE	(1 << 1)
95 #define EXYNOS_DRM_PLANE_CAP_ZPOS	(1 << 2)
96 #define EXYNOS_DRM_PLANE_CAP_TILE	(1 << 3)
97 #define EXYNOS_DRM_PLANE_CAP_PIX_BLEND	(1 << 4)
98 #define EXYNOS_DRM_PLANE_CAP_WIN_BLEND	(1 << 5)
99 
100 /*
101  * Exynos DRM plane configuration structure.
102  *
103  * @zpos: initial z-position of the plane.
104  * @type: type of the plane (primary, cursor or overlay).
105  * @pixel_formats: supported pixel formats.
106  * @num_pixel_formats: number of elements in 'pixel_formats'.
107  * @capabilities: supported features (see EXYNOS_DRM_PLANE_CAP_*)
108  */
109 
110 struct exynos_drm_plane_config {
111 	unsigned int zpos;
112 	enum drm_plane_type type;
113 	const uint32_t *pixel_formats;
114 	unsigned int num_pixel_formats;
115 	unsigned int capabilities;
116 };
117 
118 /*
119  * Exynos drm crtc ops
120  *
121  * @atomic_enable: enable the device
122  * @atomic_disable: disable the device
123  * @enable_vblank: specific driver callback for enabling vblank interrupt.
124  * @disable_vblank: specific driver callback for disabling vblank interrupt.
125  * @mode_valid: specific driver callback for mode validation
126  * @atomic_check: validate state
127  * @atomic_begin: prepare device to receive an update
128  * @atomic_flush: mark the end of device update
129  * @update_plane: apply hardware specific overlay data to registers.
130  * @disable_plane: disable hardware specific overlay.
131  * @te_handler: trigger to transfer video image at the tearing effect
132  *	synchronization signal if there is a page flip request.
133  */
134 struct exynos_drm_crtc;
135 struct exynos_drm_crtc_ops {
136 	void (*atomic_enable)(struct exynos_drm_crtc *crtc);
137 	void (*atomic_disable)(struct exynos_drm_crtc *crtc);
138 	int (*enable_vblank)(struct exynos_drm_crtc *crtc);
139 	void (*disable_vblank)(struct exynos_drm_crtc *crtc);
140 	enum drm_mode_status (*mode_valid)(struct exynos_drm_crtc *crtc,
141 		const struct drm_display_mode *mode);
142 	bool (*mode_fixup)(struct exynos_drm_crtc *crtc,
143 			   const struct drm_display_mode *mode,
144 			   struct drm_display_mode *adjusted_mode);
145 	int (*atomic_check)(struct exynos_drm_crtc *crtc,
146 			    struct drm_crtc_state *state);
147 	void (*atomic_begin)(struct exynos_drm_crtc *crtc);
148 	void (*update_plane)(struct exynos_drm_crtc *crtc,
149 			     struct exynos_drm_plane *plane);
150 	void (*disable_plane)(struct exynos_drm_crtc *crtc,
151 			      struct exynos_drm_plane *plane);
152 	void (*atomic_flush)(struct exynos_drm_crtc *crtc);
153 	void (*te_handler)(struct exynos_drm_crtc *crtc);
154 };
155 
156 struct exynos_drm_clk {
157 	void (*enable)(struct exynos_drm_clk *clk, bool enable);
158 };
159 
160 /*
161  * Exynos specific crtc structure.
162  *
163  * @base: crtc object.
164  * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
165  * @ops: pointer to callbacks for exynos drm specific functionality
166  * @ctx: A pointer to the crtc's implementation specific context
167  * @pipe_clk: A pointer to the crtc's pipeline clock.
168  */
169 struct exynos_drm_crtc {
170 	struct drm_crtc			base;
171 	enum exynos_drm_output_type	type;
172 	const struct exynos_drm_crtc_ops	*ops;
173 	void				*ctx;
174 	struct exynos_drm_clk		*pipe_clk;
175 	bool				i80_mode : 1;
176 };
177 
178 static inline void exynos_drm_pipe_clk_enable(struct exynos_drm_crtc *crtc,
179 					      bool enable)
180 {
181 	if (crtc->pipe_clk)
182 		crtc->pipe_clk->enable(crtc->pipe_clk, enable);
183 }
184 
185 struct drm_exynos_file_private {
186 	/* for g2d api */
187 	struct list_head	inuse_cmdlist;
188 	struct list_head	event_list;
189 	struct list_head	userptr_list;
190 };
191 
192 /*
193  * Exynos drm private structure.
194  *
195  * @pending: the crtcs that have pending updates to finish
196  * @lock: protect access to @pending
197  * @wait: wait an atomic commit to finish
198  */
199 struct exynos_drm_private {
200 	struct drm_fb_helper *fb_helper;
201 
202 	struct device *g2d_dev;
203 	struct device *dma_dev;
204 	void *mapping;
205 
206 	/* for atomic commit */
207 	u32			pending;
208 	spinlock_t		lock;
209 	wait_queue_head_t	wait;
210 };
211 
212 static inline struct device *to_dma_dev(struct drm_device *dev)
213 {
214 	struct exynos_drm_private *priv = dev->dev_private;
215 
216 	return priv->dma_dev;
217 }
218 
219 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
220 {
221 	struct exynos_drm_private *priv = drm_dev->dev_private;
222 
223 	return priv->mapping ? true : false;
224 }
225 
226 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev,
227 			    void **dma_priv);
228 void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev,
229 			       void **dma_priv);
230 void exynos_drm_cleanup_dma(struct drm_device *drm);
231 
232 #ifdef CONFIG_DRM_EXYNOS_DPI
233 struct drm_encoder *exynos_dpi_probe(struct device *dev);
234 int exynos_dpi_remove(struct drm_encoder *encoder);
235 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
236 #else
237 static inline struct drm_encoder *
238 exynos_dpi_probe(struct device *dev) { return NULL; }
239 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
240 {
241 	return 0;
242 }
243 static inline int exynos_dpi_bind(struct drm_device *dev,
244 				  struct drm_encoder *encoder)
245 {
246 	return 0;
247 }
248 #endif
249 
250 #ifdef CONFIG_DRM_EXYNOS_FIMC
251 int exynos_drm_check_fimc_device(struct device *dev);
252 #else
253 static inline int exynos_drm_check_fimc_device(struct device *dev)
254 {
255 	return 0;
256 }
257 #endif
258 
259 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
260 			 bool nonblock);
261 
262 
263 extern struct platform_driver fimd_driver;
264 extern struct platform_driver exynos5433_decon_driver;
265 extern struct platform_driver decon_driver;
266 extern struct platform_driver dp_driver;
267 extern struct platform_driver dsi_driver;
268 extern struct platform_driver mixer_driver;
269 extern struct platform_driver hdmi_driver;
270 extern struct platform_driver vidi_driver;
271 extern struct platform_driver g2d_driver;
272 extern struct platform_driver fimc_driver;
273 extern struct platform_driver rotator_driver;
274 extern struct platform_driver scaler_driver;
275 extern struct platform_driver gsc_driver;
276 extern struct platform_driver mic_driver;
277 #endif
278