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 */
47 struct omap_drm_irq error_irq;
50 struct omap_plane_state {
51 struct drm_plane_state base;
56 static inline struct omap_plane_state *
57 to_omap_plane_state(struct drm_plane_state *state)
59 return container_of(state, struct omap_plane_state, base);
62 static int omap_plane_prepare_fb(struct drm_plane *plane,
63 const struct drm_plane_state *new_state)
68 return omap_framebuffer_pin(new_state->fb);
71 static void omap_plane_cleanup_fb(struct drm_plane *plane,
72 const struct drm_plane_state *old_state)
75 omap_framebuffer_unpin(old_state->fb);
78 static void omap_plane_atomic_update(struct drm_plane *plane,
79 struct drm_plane_state *old_state)
81 struct omap_plane *omap_plane = to_omap_plane(plane);
82 struct drm_plane_state *state = plane->state;
83 struct omap_plane_state *omap_state = to_omap_plane_state(state);
84 struct omap_overlay_info info;
85 struct omap_drm_window win;
88 DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb);
90 memset(&info, 0, sizeof(info));
91 info.rotation_type = OMAP_DSS_ROT_DMA;
92 info.rotation = OMAP_DSS_ROT_0;
93 info.global_alpha = 0xff;
95 info.zorder = omap_state->zorder;
97 memset(&win, 0, sizeof(win));
98 win.rotation = state->rotation;
99 win.crtc_x = state->crtc_x;
100 win.crtc_y = state->crtc_y;
101 win.crtc_w = state->crtc_w;
102 win.crtc_h = state->crtc_h;
105 * src values are in Q16 fixed point, convert to integer.
106 * omap_framebuffer_update_scanout() takes adjusted src.
108 win.src_x = state->src_x >> 16;
109 win.src_y = state->src_y >> 16;
111 switch (state->rotation & DRM_ROTATE_MASK) {
112 case BIT(DRM_ROTATE_90):
113 case BIT(DRM_ROTATE_270):
114 win.src_w = state->src_h >> 16;
115 win.src_h = state->src_w >> 16;
118 win.src_w = state->src_w >> 16;
119 win.src_h = state->src_h >> 16;
123 /* update scanout: */
124 omap_framebuffer_update_scanout(state->fb, &win, &info);
126 DBG("%dx%d -> %dx%d (%d)", info.width, info.height,
127 info.out_width, info.out_height,
129 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
130 &info.paddr, &info.p_uv_addr);
132 dispc_ovl_set_channel_out(omap_plane->id,
133 omap_crtc_channel(state->crtc));
135 /* and finally, update omapdss: */
136 ret = dispc_ovl_setup(omap_plane->id, &info, false,
137 omap_crtc_timings(state->crtc), false);
139 dispc_ovl_enable(omap_plane->id, false);
143 dispc_ovl_enable(omap_plane->id, true);
146 static void omap_plane_atomic_disable(struct drm_plane *plane,
147 struct drm_plane_state *old_state)
149 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state);
150 struct omap_plane *omap_plane = to_omap_plane(plane);
152 plane->state->rotation = BIT(DRM_ROTATE_0);
153 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
154 ? 0 : omap_plane->id;
156 dispc_ovl_enable(omap_plane->id, false);
159 static int omap_plane_atomic_check(struct drm_plane *plane,
160 struct drm_plane_state *state)
162 struct drm_crtc_state *crtc_state;
167 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
168 if (IS_ERR(crtc_state))
169 return PTR_ERR(crtc_state);
171 if (state->crtc_x < 0 || state->crtc_y < 0)
174 if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay)
177 if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay)
183 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
184 .prepare_fb = omap_plane_prepare_fb,
185 .cleanup_fb = omap_plane_cleanup_fb,
186 .atomic_check = omap_plane_atomic_check,
187 .atomic_update = omap_plane_atomic_update,
188 .atomic_disable = omap_plane_atomic_disable,
191 static void omap_plane_destroy(struct drm_plane *plane)
193 struct omap_plane *omap_plane = to_omap_plane(plane);
195 DBG("%s", omap_plane->name);
197 omap_irq_unregister(plane->dev, &omap_plane->error_irq);
199 drm_plane_cleanup(plane);
204 /* helper to install properties which are common to planes and crtcs */
205 void omap_plane_install_properties(struct drm_plane *plane,
206 struct drm_mode_object *obj)
208 struct drm_device *dev = plane->dev;
209 struct omap_drm_private *priv = dev->dev_private;
212 struct drm_property *prop = dev->mode_config.rotation_property;
214 drm_object_attach_property(obj, prop, 0);
217 drm_object_attach_property(obj, priv->zorder_prop, 0);
220 static struct drm_plane_state *
221 omap_plane_atomic_duplicate_state(struct drm_plane *plane)
223 struct omap_plane_state *state;
224 struct omap_plane_state *copy;
226 if (WARN_ON(!plane->state))
229 state = to_omap_plane_state(plane->state);
230 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
234 __drm_atomic_helper_plane_duplicate_state(plane, ©->base);
239 static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
240 struct drm_plane_state *state)
242 __drm_atomic_helper_plane_destroy_state(plane, state);
243 kfree(to_omap_plane_state(state));
246 static void omap_plane_reset(struct drm_plane *plane)
248 struct omap_plane *omap_plane = to_omap_plane(plane);
249 struct omap_plane_state *omap_state;
252 omap_plane_atomic_destroy_state(plane, plane->state);
256 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
257 if (omap_state == NULL)
261 * Set defaults depending on whether we are a primary or overlay
264 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
265 ? 0 : omap_plane->id;
266 omap_state->base.rotation = BIT(DRM_ROTATE_0);
268 plane->state = &omap_state->base;
269 plane->state->plane = plane;
272 static int omap_plane_atomic_set_property(struct drm_plane *plane,
273 struct drm_plane_state *state,
274 struct drm_property *property,
277 struct omap_drm_private *priv = plane->dev->dev_private;
278 struct omap_plane_state *omap_state = to_omap_plane_state(state);
280 if (property == priv->zorder_prop)
281 omap_state->zorder = val;
288 static int omap_plane_atomic_get_property(struct drm_plane *plane,
289 const struct drm_plane_state *state,
290 struct drm_property *property,
293 struct omap_drm_private *priv = plane->dev->dev_private;
294 const struct omap_plane_state *omap_state =
295 container_of(state, const struct omap_plane_state, base);
297 if (property == priv->zorder_prop)
298 *val = omap_state->zorder;
305 static const struct drm_plane_funcs omap_plane_funcs = {
306 .update_plane = drm_atomic_helper_update_plane,
307 .disable_plane = drm_atomic_helper_disable_plane,
308 .reset = omap_plane_reset,
309 .destroy = omap_plane_destroy,
310 .set_property = drm_atomic_helper_plane_set_property,
311 .atomic_duplicate_state = omap_plane_atomic_duplicate_state,
312 .atomic_destroy_state = omap_plane_atomic_destroy_state,
313 .atomic_set_property = omap_plane_atomic_set_property,
314 .atomic_get_property = omap_plane_atomic_get_property,
317 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
319 struct omap_plane *omap_plane =
320 container_of(irq, struct omap_plane, error_irq);
321 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name,
325 static const char *plane_names[] = {
326 [OMAP_DSS_GFX] = "gfx",
327 [OMAP_DSS_VIDEO1] = "vid1",
328 [OMAP_DSS_VIDEO2] = "vid2",
329 [OMAP_DSS_VIDEO3] = "vid3",
332 static const uint32_t error_irqs[] = {
333 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
334 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
335 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
336 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
339 /* initialize plane */
340 struct drm_plane *omap_plane_init(struct drm_device *dev,
341 int id, enum drm_plane_type type)
343 struct omap_drm_private *priv = dev->dev_private;
344 struct drm_plane *plane;
345 struct omap_plane *omap_plane;
348 DBG("%s: type=%d", plane_names[id], type);
350 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
352 return ERR_PTR(-ENOMEM);
354 omap_plane->nformats = omap_framebuffer_get_formats(
355 omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
356 dss_feat_get_supported_color_modes(id));
358 omap_plane->name = plane_names[id];
360 plane = &omap_plane->base;
362 omap_plane->error_irq.irqmask = error_irqs[id];
363 omap_plane->error_irq.irq = omap_plane_error_irq;
364 omap_irq_register(dev, &omap_plane->error_irq);
366 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
367 &omap_plane_funcs, omap_plane->formats,
368 omap_plane->nformats, type, NULL);
372 drm_plane_helper_add(plane, &omap_plane_helper_funcs);
374 omap_plane_install_properties(plane, &plane->base);
379 omap_irq_unregister(plane->dev, &omap_plane->error_irq);