Merge tag 'drm-misc-next-2017-01-30' of git://anongit.freedesktop.org/git/drm-misc...
[linux-block.git] / drivers / gpu / drm / omapdrm / omap_plane.c
1 /*
2  * drivers/gpu/drm/omapdrm/omap_plane.c
3  *
4  * Copyright (C) 2011 Texas Instruments
5  * Author: Rob Clark <rob.clark@linaro.org>
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published by
9  * the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #include <drm/drm_atomic.h>
21 #include <drm/drm_atomic_helper.h>
22 #include <drm/drm_plane_helper.h>
23
24 #include "omap_dmm_tiler.h"
25 #include "omap_drv.h"
26
27 /* some hackery because omapdss has an 'enum omap_plane' (which would be
28  * better named omap_plane_id).. and compiler seems unhappy about having
29  * both a 'struct omap_plane' and 'enum omap_plane'
30  */
31 #define omap_plane _omap_plane
32
33 /*
34  * plane funcs
35  */
36
37 #define to_omap_plane(x) container_of(x, struct omap_plane, base)
38
39 struct omap_plane {
40         struct drm_plane base;
41         int id;  /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
42         const char *name;
43
44         uint32_t nformats;
45         uint32_t formats[32];
46 };
47
48 struct omap_plane_state {
49         struct drm_plane_state base;
50
51         unsigned int zorder;
52 };
53
54 static inline struct omap_plane_state *
55 to_omap_plane_state(struct drm_plane_state *state)
56 {
57         return container_of(state, struct omap_plane_state, base);
58 }
59
60 static int omap_plane_prepare_fb(struct drm_plane *plane,
61                                  struct drm_plane_state *new_state)
62 {
63         if (!new_state->fb)
64                 return 0;
65
66         return omap_framebuffer_pin(new_state->fb);
67 }
68
69 static void omap_plane_cleanup_fb(struct drm_plane *plane,
70                                   struct drm_plane_state *old_state)
71 {
72         if (old_state->fb)
73                 omap_framebuffer_unpin(old_state->fb);
74 }
75
76 static void omap_plane_atomic_update(struct drm_plane *plane,
77                                      struct drm_plane_state *old_state)
78 {
79         struct omap_plane *omap_plane = to_omap_plane(plane);
80         struct drm_plane_state *state = plane->state;
81         struct omap_plane_state *omap_state = to_omap_plane_state(state);
82         struct omap_overlay_info info;
83         struct omap_drm_window win;
84         int ret;
85
86         DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb);
87
88         memset(&info, 0, sizeof(info));
89         info.rotation_type = OMAP_DSS_ROT_DMA;
90         info.rotation = OMAP_DSS_ROT_0;
91         info.global_alpha = 0xff;
92         info.mirror = 0;
93         info.zorder = omap_state->zorder;
94
95         memset(&win, 0, sizeof(win));
96         win.rotation = state->rotation;
97         win.crtc_x = state->crtc_x;
98         win.crtc_y = state->crtc_y;
99         win.crtc_w = state->crtc_w;
100         win.crtc_h = state->crtc_h;
101
102         /*
103          * src values are in Q16 fixed point, convert to integer.
104          * omap_framebuffer_update_scanout() takes adjusted src.
105          */
106         win.src_x = state->src_x >> 16;
107         win.src_y = state->src_y >> 16;
108
109         if (drm_rotation_90_or_270(state->rotation)) {
110                 win.src_w = state->src_h >> 16;
111                 win.src_h = state->src_w >> 16;
112         } else {
113                 win.src_w = state->src_w >> 16;
114                 win.src_h = state->src_h >> 16;
115         }
116
117         /* update scanout: */
118         omap_framebuffer_update_scanout(state->fb, &win, &info);
119
120         DBG("%dx%d -> %dx%d (%d)", info.width, info.height,
121                         info.out_width, info.out_height,
122                         info.screen_width);
123         DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
124                         &info.paddr, &info.p_uv_addr);
125
126         dispc_ovl_set_channel_out(omap_plane->id,
127                                   omap_crtc_channel(state->crtc));
128
129         /* and finally, update omapdss: */
130         ret = dispc_ovl_setup(omap_plane->id, &info, false,
131                               omap_crtc_timings(state->crtc), false);
132         if (ret) {
133                 dev_err(plane->dev->dev, "Failed to setup plane %s\n",
134                         omap_plane->name);
135                 dispc_ovl_enable(omap_plane->id, false);
136                 return;
137         }
138
139         dispc_ovl_enable(omap_plane->id, true);
140 }
141
142 static void omap_plane_atomic_disable(struct drm_plane *plane,
143                                       struct drm_plane_state *old_state)
144 {
145         struct omap_plane_state *omap_state = to_omap_plane_state(plane->state);
146         struct omap_plane *omap_plane = to_omap_plane(plane);
147
148         plane->state->rotation = DRM_ROTATE_0;
149         omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
150                            ? 0 : omap_plane->id;
151
152         dispc_ovl_enable(omap_plane->id, false);
153 }
154
155 static int omap_plane_atomic_check(struct drm_plane *plane,
156                                    struct drm_plane_state *state)
157 {
158         struct drm_crtc_state *crtc_state;
159
160         if (!state->fb)
161                 return 0;
162
163         /* crtc should only be NULL when disabling (i.e., !state->fb) */
164         if (WARN_ON(!state->crtc))
165                 return 0;
166
167         crtc_state = drm_atomic_get_existing_crtc_state(state->state, state->crtc);
168         /* we should have a crtc state if the plane is attached to a crtc */
169         if (WARN_ON(!crtc_state))
170                 return 0;
171
172         if (!crtc_state->enable)
173                 return 0;
174
175         if (state->crtc_x < 0 || state->crtc_y < 0)
176                 return -EINVAL;
177
178         if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay)
179                 return -EINVAL;
180
181         if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay)
182                 return -EINVAL;
183
184         if (state->rotation != DRM_ROTATE_0 &&
185             !omap_framebuffer_supports_rotation(state->fb))
186                 return -EINVAL;
187
188         return 0;
189 }
190
191 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
192         .prepare_fb = omap_plane_prepare_fb,
193         .cleanup_fb = omap_plane_cleanup_fb,
194         .atomic_check = omap_plane_atomic_check,
195         .atomic_update = omap_plane_atomic_update,
196         .atomic_disable = omap_plane_atomic_disable,
197 };
198
199 static void omap_plane_destroy(struct drm_plane *plane)
200 {
201         struct omap_plane *omap_plane = to_omap_plane(plane);
202
203         DBG("%s", omap_plane->name);
204
205         drm_plane_cleanup(plane);
206
207         kfree(omap_plane);
208 }
209
210 /* helper to install properties which are common to planes and crtcs */
211 void omap_plane_install_properties(struct drm_plane *plane,
212                 struct drm_mode_object *obj)
213 {
214         struct drm_device *dev = plane->dev;
215         struct omap_drm_private *priv = dev->dev_private;
216
217         if (priv->has_dmm) {
218                 if (!plane->rotation_property)
219                         drm_plane_create_rotation_property(plane,
220                                                            DRM_ROTATE_0,
221                                                            DRM_ROTATE_0 | DRM_ROTATE_90 |
222                                                            DRM_ROTATE_180 | DRM_ROTATE_270 |
223                                                            DRM_REFLECT_X | DRM_REFLECT_Y);
224
225                 /* Attach the rotation property also to the crtc object */
226                 if (plane->rotation_property && obj != &plane->base)
227                         drm_object_attach_property(obj, plane->rotation_property,
228                                                    DRM_ROTATE_0);
229         }
230
231         drm_object_attach_property(obj, priv->zorder_prop, 0);
232 }
233
234 static struct drm_plane_state *
235 omap_plane_atomic_duplicate_state(struct drm_plane *plane)
236 {
237         struct omap_plane_state *state;
238         struct omap_plane_state *copy;
239
240         if (WARN_ON(!plane->state))
241                 return NULL;
242
243         state = to_omap_plane_state(plane->state);
244         copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
245         if (copy == NULL)
246                 return NULL;
247
248         __drm_atomic_helper_plane_duplicate_state(plane, &copy->base);
249
250         return &copy->base;
251 }
252
253 static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
254                                             struct drm_plane_state *state)
255 {
256         __drm_atomic_helper_plane_destroy_state(state);
257         kfree(to_omap_plane_state(state));
258 }
259
260 static void omap_plane_reset(struct drm_plane *plane)
261 {
262         struct omap_plane *omap_plane = to_omap_plane(plane);
263         struct omap_plane_state *omap_state;
264
265         if (plane->state) {
266                 omap_plane_atomic_destroy_state(plane, plane->state);
267                 plane->state = NULL;
268         }
269
270         omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
271         if (omap_state == NULL)
272                 return;
273
274         /*
275          * Set defaults depending on whether we are a primary or overlay
276          * plane.
277          */
278         omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
279                            ? 0 : omap_plane->id;
280         omap_state->base.rotation = DRM_ROTATE_0;
281
282         plane->state = &omap_state->base;
283         plane->state->plane = plane;
284 }
285
286 static int omap_plane_atomic_set_property(struct drm_plane *plane,
287                                           struct drm_plane_state *state,
288                                           struct drm_property *property,
289                                           uint64_t val)
290 {
291         struct omap_drm_private *priv = plane->dev->dev_private;
292         struct omap_plane_state *omap_state = to_omap_plane_state(state);
293
294         if (property == priv->zorder_prop)
295                 omap_state->zorder = val;
296         else
297                 return -EINVAL;
298
299         return 0;
300 }
301
302 static int omap_plane_atomic_get_property(struct drm_plane *plane,
303                                           const struct drm_plane_state *state,
304                                           struct drm_property *property,
305                                           uint64_t *val)
306 {
307         struct omap_drm_private *priv = plane->dev->dev_private;
308         const struct omap_plane_state *omap_state =
309                 container_of(state, const struct omap_plane_state, base);
310
311         if (property == priv->zorder_prop)
312                 *val = omap_state->zorder;
313         else
314                 return -EINVAL;
315
316         return 0;
317 }
318
319 static const struct drm_plane_funcs omap_plane_funcs = {
320         .update_plane = drm_atomic_helper_update_plane,
321         .disable_plane = drm_atomic_helper_disable_plane,
322         .reset = omap_plane_reset,
323         .destroy = omap_plane_destroy,
324         .set_property = drm_atomic_helper_plane_set_property,
325         .atomic_duplicate_state = omap_plane_atomic_duplicate_state,
326         .atomic_destroy_state = omap_plane_atomic_destroy_state,
327         .atomic_set_property = omap_plane_atomic_set_property,
328         .atomic_get_property = omap_plane_atomic_get_property,
329 };
330
331 static const char *plane_names[] = {
332         [OMAP_DSS_GFX] = "gfx",
333         [OMAP_DSS_VIDEO1] = "vid1",
334         [OMAP_DSS_VIDEO2] = "vid2",
335         [OMAP_DSS_VIDEO3] = "vid3",
336 };
337
338 /* initialize plane */
339 struct drm_plane *omap_plane_init(struct drm_device *dev,
340                 int id, enum drm_plane_type type,
341                 u32 possible_crtcs)
342 {
343         struct drm_plane *plane;
344         struct omap_plane *omap_plane;
345         int ret;
346
347         DBG("%s: type=%d", plane_names[id], type);
348
349         omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
350         if (!omap_plane)
351                 return ERR_PTR(-ENOMEM);
352
353         omap_plane->nformats = omap_framebuffer_get_formats(
354                         omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
355                         dss_feat_get_supported_color_modes(id));
356         omap_plane->id = id;
357         omap_plane->name = plane_names[id];
358
359         plane = &omap_plane->base;
360
361         ret = drm_universal_plane_init(dev, plane, possible_crtcs,
362                                        &omap_plane_funcs, omap_plane->formats,
363                                        omap_plane->nformats, type, NULL);
364         if (ret < 0)
365                 goto error;
366
367         drm_plane_helper_add(plane, &omap_plane_helper_funcs);
368
369         omap_plane_install_properties(plane, &plane->base);
370
371         return plane;
372
373 error:
374         kfree(omap_plane);
375         return NULL;
376 }