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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
4 * Author: Rob Clark <rob.clark@linaro.org>
5 */
6
7#include <drm/drm_atomic.h>
8#include <drm/drm_atomic_helper.h>
9#include <drm/drm_gem_atomic_helper.h>
10#include <drm/drm_plane_helper.h>
11
12#include "omap_dmm_tiler.h"
13#include "omap_drv.h"
14
15/*
16 * plane funcs
17 */
18
19#define to_omap_plane(x) container_of(x, struct omap_plane, base)
20
21struct omap_plane {
22 struct drm_plane base;
23 enum omap_plane_id id;
24 const char *name;
25};
26
27static int omap_plane_prepare_fb(struct drm_plane *plane,
28 struct drm_plane_state *new_state)
29{
30 if (!new_state->fb)
31 return 0;
32
33 drm_gem_plane_helper_prepare_fb(plane, new_state);
34
35 return omap_framebuffer_pin(new_state->fb);
36}
37
38static void omap_plane_cleanup_fb(struct drm_plane *plane,
39 struct drm_plane_state *old_state)
40{
41 if (old_state->fb)
42 omap_framebuffer_unpin(old_state->fb);
43}
44
45static void omap_plane_atomic_update(struct drm_plane *plane,
46 struct drm_atomic_state *state)
47{
48 struct omap_drm_private *priv = plane->dev->dev_private;
49 struct omap_plane *omap_plane = to_omap_plane(plane);
50 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
51 plane);
52 struct omap_overlay_info info;
53 int ret;
54
55 DBG("%s, crtc=%p fb=%p", omap_plane->name, new_state->crtc,
56 new_state->fb);
57
58 memset(&info, 0, sizeof(info));
59 info.rotation_type = OMAP_DSS_ROT_NONE;
60 info.rotation = DRM_MODE_ROTATE_0;
61 info.global_alpha = new_state->alpha >> 8;
62 info.zorder = new_state->normalized_zpos;
63 if (new_state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
64 info.pre_mult_alpha = 1;
65 else
66 info.pre_mult_alpha = 0;
67 info.color_encoding = new_state->color_encoding;
68 info.color_range = new_state->color_range;
69
70 /* update scanout: */
71 omap_framebuffer_update_scanout(new_state->fb, new_state, &info);
72
73 DBG("%dx%d -> %dx%d (%d)", info.width, info.height,
74 info.out_width, info.out_height,
75 info.screen_width);
76 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
77 &info.paddr, &info.p_uv_addr);
78
79 /* and finally, update omapdss: */
80 ret = dispc_ovl_setup(priv->dispc, omap_plane->id, &info,
81 omap_crtc_timings(new_state->crtc), false,
82 omap_crtc_channel(new_state->crtc));
83 if (ret) {
84 dev_err(plane->dev->dev, "Failed to setup plane %s\n",
85 omap_plane->name);
86 dispc_ovl_enable(priv->dispc, omap_plane->id, false);
87 return;
88 }
89
90 dispc_ovl_enable(priv->dispc, omap_plane->id, true);
91}
92
93static void omap_plane_atomic_disable(struct drm_plane *plane,
94 struct drm_atomic_state *state)
95{
96 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
97 plane);
98 struct omap_drm_private *priv = plane->dev->dev_private;
99 struct omap_plane *omap_plane = to_omap_plane(plane);
100
101 new_state->rotation = DRM_MODE_ROTATE_0;
102 new_state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : omap_plane->id;
103
104 dispc_ovl_enable(priv->dispc, omap_plane->id, false);
105}
106
107static int omap_plane_atomic_check(struct drm_plane *plane,
108 struct drm_atomic_state *state)
109{
110 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
111 plane);
112 struct drm_crtc_state *crtc_state;
113
114 if (!new_plane_state->fb)
115 return 0;
116
117 /* crtc should only be NULL when disabling (i.e., !new_plane_state->fb) */
118 if (WARN_ON(!new_plane_state->crtc))
119 return 0;
120
121 crtc_state = drm_atomic_get_existing_crtc_state(state,
122 new_plane_state->crtc);
123 /* we should have a crtc state if the plane is attached to a crtc */
124 if (WARN_ON(!crtc_state))
125 return 0;
126
127 if (!crtc_state->enable)
128 return 0;
129
130 if (new_plane_state->crtc_x < 0 || new_plane_state->crtc_y < 0)
131 return -EINVAL;
132
133 if (new_plane_state->crtc_x + new_plane_state->crtc_w > crtc_state->adjusted_mode.hdisplay)
134 return -EINVAL;
135
136 if (new_plane_state->crtc_y + new_plane_state->crtc_h > crtc_state->adjusted_mode.vdisplay)
137 return -EINVAL;
138
139 if (new_plane_state->rotation != DRM_MODE_ROTATE_0 &&
140 !omap_framebuffer_supports_rotation(new_plane_state->fb))
141 return -EINVAL;
142
143 return 0;
144}
145
146static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
147 .prepare_fb = omap_plane_prepare_fb,
148 .cleanup_fb = omap_plane_cleanup_fb,
149 .atomic_check = omap_plane_atomic_check,
150 .atomic_update = omap_plane_atomic_update,
151 .atomic_disable = omap_plane_atomic_disable,
152};
153
154static void omap_plane_destroy(struct drm_plane *plane)
155{
156 struct omap_plane *omap_plane = to_omap_plane(plane);
157
158 DBG("%s", omap_plane->name);
159
160 drm_plane_cleanup(plane);
161
162 kfree(omap_plane);
163}
164
165/* helper to install properties which are common to planes and crtcs */
166void omap_plane_install_properties(struct drm_plane *plane,
167 struct drm_mode_object *obj)
168{
169 struct drm_device *dev = plane->dev;
170 struct omap_drm_private *priv = dev->dev_private;
171
172 if (priv->has_dmm) {
173 if (!plane->rotation_property)
174 drm_plane_create_rotation_property(plane,
175 DRM_MODE_ROTATE_0,
176 DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_90 |
177 DRM_MODE_ROTATE_180 | DRM_MODE_ROTATE_270 |
178 DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y);
179
180 /* Attach the rotation property also to the crtc object */
181 if (plane->rotation_property && obj != &plane->base)
182 drm_object_attach_property(obj, plane->rotation_property,
183 DRM_MODE_ROTATE_0);
184 }
185
186 drm_object_attach_property(obj, priv->zorder_prop, 0);
187}
188
189static void omap_plane_reset(struct drm_plane *plane)
190{
191 struct omap_plane *omap_plane = to_omap_plane(plane);
192
193 drm_atomic_helper_plane_reset(plane);
194 if (!plane->state)
195 return;
196
197 /*
198 * Set the zpos default depending on whether we are a primary or overlay
199 * plane.
200 */
201 plane->state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY
202 ? 0 : omap_plane->id;
203 plane->state->color_encoding = DRM_COLOR_YCBCR_BT601;
204 plane->state->color_range = DRM_COLOR_YCBCR_FULL_RANGE;
205}
206
207static int omap_plane_atomic_set_property(struct drm_plane *plane,
208 struct drm_plane_state *state,
209 struct drm_property *property,
210 u64 val)
211{
212 struct omap_drm_private *priv = plane->dev->dev_private;
213
214 if (property == priv->zorder_prop)
215 state->zpos = val;
216 else
217 return -EINVAL;
218
219 return 0;
220}
221
222static int omap_plane_atomic_get_property(struct drm_plane *plane,
223 const struct drm_plane_state *state,
224 struct drm_property *property,
225 u64 *val)
226{
227 struct omap_drm_private *priv = plane->dev->dev_private;
228
229 if (property == priv->zorder_prop)
230 *val = state->zpos;
231 else
232 return -EINVAL;
233
234 return 0;
235}
236
237static const struct drm_plane_funcs omap_plane_funcs = {
238 .update_plane = drm_atomic_helper_update_plane,
239 .disable_plane = drm_atomic_helper_disable_plane,
240 .reset = omap_plane_reset,
241 .destroy = omap_plane_destroy,
242 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
243 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
244 .atomic_set_property = omap_plane_atomic_set_property,
245 .atomic_get_property = omap_plane_atomic_get_property,
246};
247
248static bool omap_plane_supports_yuv(struct drm_plane *plane)
249{
250 struct omap_drm_private *priv = plane->dev->dev_private;
251 struct omap_plane *omap_plane = to_omap_plane(plane);
252 const u32 *formats = dispc_ovl_get_color_modes(priv->dispc, omap_plane->id);
253 u32 i;
254
255 for (i = 0; formats[i]; i++)
256 if (formats[i] == DRM_FORMAT_YUYV ||
257 formats[i] == DRM_FORMAT_UYVY ||
258 formats[i] == DRM_FORMAT_NV12)
259 return true;
260
261 return false;
262}
263
264static const char *plane_id_to_name[] = {
265 [OMAP_DSS_GFX] = "gfx",
266 [OMAP_DSS_VIDEO1] = "vid1",
267 [OMAP_DSS_VIDEO2] = "vid2",
268 [OMAP_DSS_VIDEO3] = "vid3",
269};
270
271static const enum omap_plane_id plane_idx_to_id[] = {
272 OMAP_DSS_GFX,
273 OMAP_DSS_VIDEO1,
274 OMAP_DSS_VIDEO2,
275 OMAP_DSS_VIDEO3,
276};
277
278/* initialize plane */
279struct drm_plane *omap_plane_init(struct drm_device *dev,
280 int idx, enum drm_plane_type type,
281 u32 possible_crtcs)
282{
283 struct omap_drm_private *priv = dev->dev_private;
284 unsigned int num_planes = dispc_get_num_ovls(priv->dispc);
285 struct drm_plane *plane;
286 struct omap_plane *omap_plane;
287 enum omap_plane_id id;
288 int ret;
289 u32 nformats;
290 const u32 *formats;
291
292 if (WARN_ON(idx >= ARRAY_SIZE(plane_idx_to_id)))
293 return ERR_PTR(-EINVAL);
294
295 id = plane_idx_to_id[idx];
296
297 DBG("%s: type=%d", plane_id_to_name[id], type);
298
299 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
300 if (!omap_plane)
301 return ERR_PTR(-ENOMEM);
302
303 formats = dispc_ovl_get_color_modes(priv->dispc, id);
304 for (nformats = 0; formats[nformats]; ++nformats)
305 ;
306 omap_plane->id = id;
307 omap_plane->name = plane_id_to_name[id];
308
309 plane = &omap_plane->base;
310
311 ret = drm_universal_plane_init(dev, plane, possible_crtcs,
312 &omap_plane_funcs, formats,
313 nformats, NULL, type, NULL);
314 if (ret < 0)
315 goto error;
316
317 drm_plane_helper_add(plane, &omap_plane_helper_funcs);
318
319 omap_plane_install_properties(plane, &plane->base);
320 drm_plane_create_zpos_property(plane, 0, 0, num_planes - 1);
321 drm_plane_create_alpha_property(plane);
322 drm_plane_create_blend_mode_property(plane, BIT(DRM_MODE_BLEND_PREMULTI) |
323 BIT(DRM_MODE_BLEND_COVERAGE));
324
325 if (omap_plane_supports_yuv(plane))
326 drm_plane_create_color_properties(plane,
327 BIT(DRM_COLOR_YCBCR_BT601) |
328 BIT(DRM_COLOR_YCBCR_BT709),
329 BIT(DRM_COLOR_YCBCR_FULL_RANGE) |
330 BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
331 DRM_COLOR_YCBCR_BT601,
332 DRM_COLOR_YCBCR_FULL_RANGE);
333
334 return plane;
335
336error:
337 dev_err(dev->dev, "%s(): could not create plane: %s\n",
338 __func__, plane_id_to_name[id]);
339
340 kfree(omap_plane);
341 return NULL;
342}