1 /* exynos_drm_drv.h
2 *
3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
4 * Authors:
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 */
14
15 #ifndef _EXYNOS_DRM_DRV_H_
16 #define _EXYNOS_DRM_DRV_H_
17
18 #include <drm/drmP.h>
19 #include <linux/module.h>
20
21 #define MAX_CRTC 3
22 #define MAX_PLANE 5
23 #define MAX_FB_BUFFER 4
24
25 #define DEFAULT_WIN 0
26
27 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc, base)
28 #define to_exynos_plane(x) container_of(x, struct exynos_drm_plane, base)
29
30 /* this enumerates display type. */
31 enum exynos_drm_output_type {
32 EXYNOS_DISPLAY_TYPE_NONE,
33 /* RGB or CPU Interface. */
34 EXYNOS_DISPLAY_TYPE_LCD,
35 /* HDMI Interface. */
36 EXYNOS_DISPLAY_TYPE_HDMI,
37 /* Virtual Display Interface. */
38 EXYNOS_DISPLAY_TYPE_VIDI,
39 };
40
41 /*
42 * Exynos drm common overlay structure.
43 *
44 * @base: plane object
45 * @src_x: offset x on a framebuffer to be displayed.
46 * - the unit is screen coordinates.
47 * @src_y: offset y on a framebuffer to be displayed.
48 * - the unit is screen coordinates.
49 * @src_w: width of a partial image to be displayed from framebuffer.
50 * @src_h: height of a partial image to be displayed from framebuffer.
51 * @crtc_x: offset x on hardware screen.
52 * @crtc_y: offset y on hardware screen.
53 * @crtc_w: window width to be displayed (hardware screen).
54 * @crtc_h: window height to be displayed (hardware screen).
55 * @h_ratio: horizontal scaling ratio, 16.16 fixed point
56 * @v_ratio: vertical scaling ratio, 16.16 fixed point
57 * @dma_addr: array of bus(accessed by dma) address to the memory region
58 * allocated for a overlay.
59 * @zpos: order of overlay layer(z position).
60 *
61 * this structure is common to exynos SoC and its contents would be copied
62 * to hardware specific overlay info.
63 */
64
65 struct exynos_drm_plane {
66 struct drm_plane base;
67 unsigned int src_x;
68 unsigned int src_y;
69 unsigned int src_w;
70 unsigned int src_h;
71 unsigned int crtc_x;
72 unsigned int crtc_y;
73 unsigned int crtc_w;
74 unsigned int crtc_h;
75 unsigned int h_ratio;
76 unsigned int v_ratio;
77 dma_addr_t dma_addr[MAX_FB_BUFFER];
78 unsigned int zpos;
79 struct drm_framebuffer *pending_fb;
80 };
81
82 /*
83 * Exynos drm crtc ops
84 *
85 * @enable: enable the device
86 * @disable: disable the device
87 * @commit: set current hw specific display mode to hw.
88 * @enable_vblank: specific driver callback for enabling vblank interrupt.
89 * @disable_vblank: specific driver callback for disabling vblank interrupt.
90 * @wait_for_vblank: wait for vblank interrupt to make sure that
91 * hardware overlay is updated.
92 * @atomic_check: validate state
93 * @atomic_begin: prepare a window to receive a update
94 * @atomic_flush: mark the end of a window update
95 * @update_plane: apply hardware specific overlay data to registers.
96 * @disable_plane: disable hardware specific overlay.
97 * @te_handler: trigger to transfer video image at the tearing effect
98 * synchronization signal if there is a page flip request.
99 * @clock_enable: optional function enabling/disabling display domain clock,
100 * called from exynos-dp driver before powering up (with
101 * 'enable' argument as true) and after powering down (with
102 * 'enable' as false).
103 */
104 struct exynos_drm_crtc;
105 struct exynos_drm_crtc_ops {
106 void (*enable)(struct exynos_drm_crtc *crtc);
107 void (*disable)(struct exynos_drm_crtc *crtc);
108 void (*commit)(struct exynos_drm_crtc *crtc);
109 int (*enable_vblank)(struct exynos_drm_crtc *crtc);
110 void (*disable_vblank)(struct exynos_drm_crtc *crtc);
111 void (*wait_for_vblank)(struct exynos_drm_crtc *crtc);
112 int (*atomic_check)(struct exynos_drm_crtc *crtc,
113 struct drm_crtc_state *state);
114 void (*atomic_begin)(struct exynos_drm_crtc *crtc,
115 struct exynos_drm_plane *plane);
116 void (*update_plane)(struct exynos_drm_crtc *crtc,
117 struct exynos_drm_plane *plane);
118 void (*disable_plane)(struct exynos_drm_crtc *crtc,
119 struct exynos_drm_plane *plane);
120 void (*atomic_flush)(struct exynos_drm_crtc *crtc,
121 struct exynos_drm_plane *plane);
122 void (*te_handler)(struct exynos_drm_crtc *crtc);
123 void (*clock_enable)(struct exynos_drm_crtc *crtc, bool enable);
124 };
125
126 /*
127 * Exynos specific crtc structure.
128 *
129 * @base: crtc object.
130 * @type: one of EXYNOS_DISPLAY_TYPE_LCD and HDMI.
131 * @pipe: a crtc index created at load() with a new crtc object creation
132 * and the crtc object would be set to private->crtc array
133 * to get a crtc object corresponding to this pipe from private->crtc
134 * array when irq interrupt occurred. the reason of using this pipe is that
135 * drm framework doesn't support multiple irq yet.
136 * we can refer to the crtc to current hardware interrupt occurred through
137 * this pipe value.
138 * @enabled: if the crtc is enabled or not
139 * @event: vblank event that is currently queued for flip
140 * @wait_update: wait all pending planes updates to finish
141 * @pending_update: number of pending plane updates in this crtc
142 * @ops: pointer to callbacks for exynos drm specific functionality
143 * @ctx: A pointer to the crtc's implementation specific context
144 */
145 struct exynos_drm_crtc {
146 struct drm_crtc base;
147 enum exynos_drm_output_type type;
148 unsigned int pipe;
149 struct drm_pending_vblank_event *event;
150 wait_queue_head_t wait_update;
151 atomic_t pending_update;
152 const struct exynos_drm_crtc_ops *ops;
153 void *ctx;
154 };
155
156 struct exynos_drm_g2d_private {
157 struct device *dev;
158 struct list_head inuse_cmdlist;
159 struct list_head event_list;
160 struct list_head userptr_list;
161 };
162
163 struct drm_exynos_file_private {
164 struct exynos_drm_g2d_private *g2d_priv;
165 struct device *ipp_dev;
166 };
167
168 /*
169 * Exynos drm private structure.
170 *
171 * @da_start: start address to device address space.
172 * with iommu, device address space starts from this address
173 * otherwise default one.
174 * @da_space_size: size of device address space.
175 * if 0 then default value is used for it.
176 * @pipe: the pipe number for this crtc/manager.
177 * @pending: the crtcs that have pending updates to finish
178 * @lock: protect access to @pending
179 * @wait: wait an atomic commit to finish
180 */
181 struct exynos_drm_private {
182 struct drm_fb_helper *fb_helper;
183
184 /*
185 * created crtc object would be contained at this array and
186 * this array is used to be aware of which crtc did it request vblank.
187 */
188 struct drm_crtc *crtc[MAX_CRTC];
189 struct drm_property *plane_zpos_property;
190
191 unsigned long da_start;
192 unsigned long da_space_size;
193
194 unsigned int pipe;
195
196 /* for atomic commit */
197 u32 pending;
198 spinlock_t lock;
199 wait_queue_head_t wait;
200 };
201
202 /*
203 * Exynos drm sub driver structure.
204 *
205 * @list: sub driver has its own list object to register to exynos drm driver.
206 * @dev: pointer to device object for subdrv device driver.
207 * @drm_dev: pointer to drm_device and this pointer would be set
208 * when sub driver calls exynos_drm_subdrv_register().
209 * @probe: this callback would be called by exynos drm driver after
210 * subdrv is registered to it.
211 * @remove: this callback is used to release resources created
212 * by probe callback.
213 * @open: this would be called with drm device file open.
214 * @close: this would be called with drm device file close.
215 */
216 struct exynos_drm_subdrv {
217 struct list_head list;
218 struct device *dev;
219 struct drm_device *drm_dev;
220
221 int (*probe)(struct drm_device *drm_dev, struct device *dev);
222 void (*remove)(struct drm_device *drm_dev, struct device *dev);
223 int (*open)(struct drm_device *drm_dev, struct device *dev,
224 struct drm_file *file);
225 void (*close)(struct drm_device *drm_dev, struct device *dev,
226 struct drm_file *file);
227 };
228
229 /* This function would be called by non kms drivers such as g2d and ipp. */
230 int exynos_drm_subdrv_register(struct exynos_drm_subdrv *drm_subdrv);
231
232 /* this function removes subdrv list from exynos drm driver */
233 int exynos_drm_subdrv_unregister(struct exynos_drm_subdrv *drm_subdrv);
234
235 int exynos_drm_device_subdrv_probe(struct drm_device *dev);
236 int exynos_drm_device_subdrv_remove(struct drm_device *dev);
237 int exynos_drm_subdrv_open(struct drm_device *dev, struct drm_file *file);
238 void exynos_drm_subdrv_close(struct drm_device *dev, struct drm_file *file);
239
240 #ifdef CONFIG_DRM_EXYNOS_DPI
241 struct drm_encoder *exynos_dpi_probe(struct device *dev);
242 int exynos_dpi_remove(struct drm_encoder *encoder);
243 int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder);
244 #else
245 static inline struct drm_encoder *
exynos_dpi_probe(struct device * dev)246 exynos_dpi_probe(struct device *dev) { return NULL; }
exynos_dpi_remove(struct drm_encoder * encoder)247 static inline int exynos_dpi_remove(struct drm_encoder *encoder)
248 {
249 return 0;
250 }
exynos_dpi_bind(struct drm_device * dev,struct drm_encoder * encoder)251 static inline int exynos_dpi_bind(struct drm_device *dev,
252 struct drm_encoder *encoder)
253 {
254 return 0;
255 }
256 #endif
257
258 int exynos_atomic_commit(struct drm_device *dev, struct drm_atomic_state *state,
259 bool async);
260
261
262 extern struct platform_driver fimd_driver;
263 extern struct platform_driver exynos5433_decon_driver;
264 extern struct platform_driver decon_driver;
265 extern struct platform_driver dp_driver;
266 extern struct platform_driver dsi_driver;
267 extern struct platform_driver mixer_driver;
268 extern struct platform_driver hdmi_driver;
269 extern struct platform_driver exynos_drm_common_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 gsc_driver;
275 extern struct platform_driver ipp_driver;
276 extern struct platform_driver mic_driver;
277 #endif
278