2 * drivers/gpu/drm/omapdrm/omap_plane.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob.clark@linaro.org>
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.
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
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/>.
20 #include <drm/drm_atomic.h>
21 #include <drm/drm_atomic_helper.h>
22 #include <drm/drm_plane_helper.h>
24 #include "omap_dmm_tiler.h"
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'
31 #define omap_plane _omap_plane
37 #define to_omap_plane(x) container_of(x, struct omap_plane, base)
40 struct drm_plane base;
41 int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
48 struct omap_plane_state {
49 struct drm_plane_state base;
54 static inline struct omap_plane_state *
55 to_omap_plane_state(struct drm_plane_state *state)
57 return container_of(state, struct omap_plane_state, base);
60 static int omap_plane_prepare_fb(struct drm_plane *plane,
61 struct drm_plane_state *new_state)
66 return omap_framebuffer_pin(new_state->fb);
69 static void omap_plane_cleanup_fb(struct drm_plane *plane,
70 struct drm_plane_state *old_state)
73 omap_framebuffer_unpin(old_state->fb);
76 static void omap_plane_atomic_update(struct drm_plane *plane,
77 struct drm_plane_state *old_state)
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;
86 DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb);
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;
93 info.zorder = omap_state->zorder;
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;
103 * src values are in Q16 fixed point, convert to integer.
104 * omap_framebuffer_update_scanout() takes adjusted src.
106 win.src_x = state->src_x >> 16;
107 win.src_y = state->src_y >> 16;
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;
113 win.src_w = state->src_w >> 16;
114 win.src_h = state->src_h >> 16;
117 /* update scanout: */
118 omap_framebuffer_update_scanout(state->fb, &win, &info);
120 DBG("%dx%d -> %dx%d (%d)", info.width, info.height,
121 info.out_width, info.out_height,
123 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
124 &info.paddr, &info.p_uv_addr);
126 dispc_ovl_set_channel_out(omap_plane->id,
127 omap_crtc_channel(state->crtc));
129 /* and finally, update omapdss: */
130 ret = dispc_ovl_setup(omap_plane->id, &info, false,
131 omap_crtc_timings(state->crtc), false);
133 dev_err(plane->dev->dev, "Failed to setup plane %s\n",
135 dispc_ovl_enable(omap_plane->id, false);
139 dispc_ovl_enable(omap_plane->id, true);
142 static void omap_plane_atomic_disable(struct drm_plane *plane,
143 struct drm_plane_state *old_state)
145 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state);
146 struct omap_plane *omap_plane = to_omap_plane(plane);
148 plane->state->rotation = DRM_ROTATE_0;
149 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
150 ? 0 : omap_plane->id;
152 dispc_ovl_enable(omap_plane->id, false);
155 static int omap_plane_atomic_check(struct drm_plane *plane,
156 struct drm_plane_state *state)
158 struct drm_crtc_state *crtc_state;
163 /* crtc should only be NULL when disabling (i.e., !state->fb) */
164 if (WARN_ON(!state->crtc))
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))
172 if (!crtc_state->enable)
175 if (state->crtc_x < 0 || state->crtc_y < 0)
178 if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay)
181 if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay)
184 if (state->rotation != DRM_ROTATE_0 &&
185 !omap_framebuffer_supports_rotation(state->fb))
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,
199 static void omap_plane_destroy(struct drm_plane *plane)
201 struct omap_plane *omap_plane = to_omap_plane(plane);
203 DBG("%s", omap_plane->name);
205 drm_plane_cleanup(plane);
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)
214 struct drm_device *dev = plane->dev;
215 struct omap_drm_private *priv = dev->dev_private;
218 if (!plane->rotation_property)
219 drm_plane_create_rotation_property(plane,
221 DRM_ROTATE_0 | DRM_ROTATE_90 |
222 DRM_ROTATE_180 | DRM_ROTATE_270 |
223 DRM_REFLECT_X | DRM_REFLECT_Y);
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,
231 drm_object_attach_property(obj, priv->zorder_prop, 0);
234 static struct drm_plane_state *
235 omap_plane_atomic_duplicate_state(struct drm_plane *plane)
237 struct omap_plane_state *state;
238 struct omap_plane_state *copy;
240 if (WARN_ON(!plane->state))
243 state = to_omap_plane_state(plane->state);
244 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
248 __drm_atomic_helper_plane_duplicate_state(plane, ©->base);
253 static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
254 struct drm_plane_state *state)
256 __drm_atomic_helper_plane_destroy_state(state);
257 kfree(to_omap_plane_state(state));
260 static void omap_plane_reset(struct drm_plane *plane)
262 struct omap_plane *omap_plane = to_omap_plane(plane);
263 struct omap_plane_state *omap_state;
266 omap_plane_atomic_destroy_state(plane, plane->state);
270 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
271 if (omap_state == NULL)
275 * Set defaults depending on whether we are a primary or overlay
278 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
279 ? 0 : omap_plane->id;
280 omap_state->base.rotation = DRM_ROTATE_0;
282 plane->state = &omap_state->base;
283 plane->state->plane = plane;
286 static int omap_plane_atomic_set_property(struct drm_plane *plane,
287 struct drm_plane_state *state,
288 struct drm_property *property,
291 struct omap_drm_private *priv = plane->dev->dev_private;
292 struct omap_plane_state *omap_state = to_omap_plane_state(state);
294 if (property == priv->zorder_prop)
295 omap_state->zorder = val;
302 static int omap_plane_atomic_get_property(struct drm_plane *plane,
303 const struct drm_plane_state *state,
304 struct drm_property *property,
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);
311 if (property == priv->zorder_prop)
312 *val = omap_state->zorder;
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,
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",
338 /* initialize plane */
339 struct drm_plane *omap_plane_init(struct drm_device *dev,
340 int id, enum drm_plane_type type,
343 struct drm_plane *plane;
344 struct omap_plane *omap_plane;
347 DBG("%s: type=%d", plane_names[id], type);
349 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
351 return ERR_PTR(-ENOMEM);
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));
357 omap_plane->name = plane_names[id];
359 plane = &omap_plane->base;
361 ret = drm_universal_plane_init(dev, plane, possible_crtcs,
362 &omap_plane_funcs, omap_plane->formats,
363 omap_plane->nformats, type, NULL);
367 drm_plane_helper_add(plane, &omap_plane_helper_funcs);
369 omap_plane_install_properties(plane, &plane->base);