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 *
to_exynos_plane_state(struct drm_plane_state * 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
exynos_drm_pipe_clk_enable(struct exynos_drm_crtc * crtc,bool enable)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 device *g2d_dev;
201 struct device *dma_dev;
202 void *mapping;
203
204 /* for atomic commit */
205 u32 pending;
206 spinlock_t lock;
207 wait_queue_head_t wait;
208 };
209
to_dma_dev(struct drm_device * dev)210 static inline struct device *to_dma_dev(struct drm_device *dev)
211 {
212 struct exynos_drm_private *priv = dev->dev_private;
213
214 return priv->dma_dev;
215 }
216
is_drm_iommu_supported(struct drm_device * drm_dev)217 static inline bool is_drm_iommu_supported(struct drm_device *drm_dev)
218 {
219 struct exynos_drm_private *priv = drm_dev->dev_private;
220
221 return priv->mapping ? true : false;
222 }
223
224 int exynos_drm_register_dma(struct drm_device *drm, struct device *dev,
225 void **dma_priv);
226 void exynos_drm_unregister_dma(struct drm_device *drm, struct device *dev,
227 void **dma_priv);
228 void exynos_drm_cleanup_dma(struct drm_device *drm);
229
230 #ifdef CONFIG_DRM_EXYNOS_DPI
231 struct drm_encoder *exynos_dpi_probe(struct device *dev);
232 int exynos_dpi_remove(struct drm_encoder *encoder);
233 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
234 #else
235 static inline struct drm_encoder *
exynos_dpi_probe(struct device * dev)236 exynos_dpi_probe(struct device *dev) { return NULL; }
exynos_dpi_remove(struct drm_encoder * encoder)237 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
238 {
239 return 0;
240 }
exynos_dpi_bind(struct drm_device * dev,struct drm_encoder * encoder)241 static inline int exynos_dpi_bind(struct drm_device *dev,
242 struct drm_encoder *encoder)
243 {
244 return 0;
245 }
246 #endif
247
248 #ifdef CONFIG_DRM_EXYNOS_FIMC
249 int exynos_drm_check_fimc_device(struct device *dev);
250 #else
exynos_drm_check_fimc_device(struct device * dev)251 static inline int exynos_drm_check_fimc_device(struct device *dev)
252 {
253 return 0;
254 }
255 #endif
256
257 extern struct platform_driver fimd_driver;
258 extern struct platform_driver exynos5433_decon_driver;
259 extern struct platform_driver decon_driver;
260 extern struct platform_driver dp_driver;
261 extern struct platform_driver dsi_driver;
262 extern struct platform_driver mixer_driver;
263 extern struct platform_driver hdmi_driver;
264 extern struct platform_driver vidi_driver;
265 extern struct platform_driver g2d_driver;
266 extern struct platform_driver fimc_driver;
267 extern struct platform_driver rotator_driver;
268 extern struct platform_driver scaler_driver;
269 extern struct platform_driver gsc_driver;
270 extern struct platform_driver mic_driver;
271 #endif
272