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_flip_work.h"
23 #include "omap_dmm_tiler.h"
25 /* some hackery because omapdss has an 'enum omap_plane' (which would be
26 * better named omap_plane_id).. and compiler seems unhappy about having
27 * both a 'struct omap_plane' and 'enum omap_plane'
29 #define omap_plane _omap_plane
40 #define to_omap_plane(x) container_of(x, struct omap_plane, base)
43 struct drm_plane base;
44 int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
46 struct omap_overlay_info info;
47 struct omap_drm_apply apply;
49 /* position/orientation of scanout within the fb: */
50 struct omap_drm_window win;
53 /* last fb that we pinned: */
54 struct drm_framebuffer *pinned_fb;
59 struct omap_drm_irq error_irq;
61 /* for deferring bo unpin's until next post_apply(): */
62 struct drm_flip_work unpin_work;
64 // XXX maybe get rid of this and handle vblank in crtc too?
65 struct callback apply_done_cb;
68 static void omap_plane_unpin_worker(struct drm_flip_work *work, void *val)
70 struct omap_plane *omap_plane =
71 container_of(work, struct omap_plane, unpin_work);
72 struct drm_device *dev = omap_plane->base.dev;
75 * omap_framebuffer_pin/unpin are always called from priv->wq,
76 * so there's no need for locking here.
78 omap_framebuffer_unpin(val);
79 mutex_lock(&dev->mode_config.mutex);
80 drm_framebuffer_unreference(val);
81 mutex_unlock(&dev->mode_config.mutex);
84 /* update which fb (if any) is pinned for scanout */
85 static int omap_plane_update_pin(struct drm_plane *plane,
86 struct drm_framebuffer *fb)
88 struct omap_plane *omap_plane = to_omap_plane(plane);
89 struct drm_framebuffer *pinned_fb = omap_plane->pinned_fb;
91 if (pinned_fb != fb) {
94 DBG("%p -> %p", pinned_fb, fb);
97 drm_framebuffer_reference(fb);
98 ret = omap_framebuffer_pin(fb);
102 drm_flip_work_queue(&omap_plane->unpin_work, pinned_fb);
105 dev_err(plane->dev->dev, "could not swap %p -> %p\n",
106 omap_plane->pinned_fb, fb);
107 drm_framebuffer_unreference(fb);
108 omap_plane->pinned_fb = NULL;
112 omap_plane->pinned_fb = fb;
118 static void omap_plane_pre_apply(struct omap_drm_apply *apply)
120 struct omap_plane *omap_plane =
121 container_of(apply, struct omap_plane, apply);
122 struct omap_drm_window *win = &omap_plane->win;
123 struct drm_plane *plane = &omap_plane->base;
124 struct drm_device *dev = plane->dev;
125 struct omap_overlay_info *info = &omap_plane->info;
126 struct drm_crtc *crtc = plane->crtc;
127 enum omap_channel channel;
128 bool enabled = omap_plane->enabled && crtc;
131 DBG("%s, enabled=%d", omap_plane->name, enabled);
133 /* if fb has changed, pin new fb: */
134 omap_plane_update_pin(plane, enabled ? plane->fb : NULL);
137 dispc_ovl_enable(omap_plane->id, false);
141 channel = omap_crtc_channel(crtc);
143 /* update scanout: */
144 omap_framebuffer_update_scanout(plane->fb, win, info);
146 DBG("%dx%d -> %dx%d (%d)", info->width, info->height,
147 info->out_width, info->out_height,
149 DBG("%d,%d %pad %pad", info->pos_x, info->pos_y,
150 &info->paddr, &info->p_uv_addr);
152 /* and finally, update omapdss: */
153 ret = dispc_ovl_setup(omap_plane->id, info, false,
154 omap_crtc_timings(crtc), false);
156 dev_err(dev->dev, "dispc_ovl_setup failed: %d\n", ret);
160 dispc_ovl_enable(omap_plane->id, true);
161 dispc_ovl_set_channel_out(omap_plane->id, channel);
164 static void omap_plane_post_apply(struct omap_drm_apply *apply)
166 struct omap_plane *omap_plane =
167 container_of(apply, struct omap_plane, apply);
168 struct drm_plane *plane = &omap_plane->base;
169 struct omap_drm_private *priv = plane->dev->dev_private;
172 cb = omap_plane->apply_done_cb;
173 omap_plane->apply_done_cb.fxn = NULL;
175 drm_flip_work_commit(&omap_plane->unpin_work, priv->wq);
181 static int omap_plane_apply(struct drm_plane *plane)
184 struct omap_plane *omap_plane = to_omap_plane(plane);
185 return omap_crtc_apply(plane->crtc, &omap_plane->apply);
190 int omap_plane_mode_set(struct drm_plane *plane,
191 struct drm_crtc *crtc, struct drm_framebuffer *fb,
192 int crtc_x, int crtc_y,
193 unsigned int crtc_w, unsigned int crtc_h,
194 unsigned int src_x, unsigned int src_y,
195 unsigned int src_w, unsigned int src_h,
196 void (*fxn)(void *), void *arg)
198 struct omap_plane *omap_plane = to_omap_plane(plane);
199 struct omap_drm_window *win = &omap_plane->win;
201 win->crtc_x = crtc_x;
202 win->crtc_y = crtc_y;
203 win->crtc_w = crtc_w;
204 win->crtc_h = crtc_h;
212 /* omap_crtc should ensure that a new page flip
213 * isn't permitted while there is one pending:
215 BUG_ON(omap_plane->apply_done_cb.fxn);
217 omap_plane->apply_done_cb.fxn = fxn;
218 omap_plane->apply_done_cb.arg = arg;
221 return omap_plane_apply(plane);
224 static int omap_plane_update(struct drm_plane *plane,
225 struct drm_crtc *crtc, struct drm_framebuffer *fb,
226 int crtc_x, int crtc_y,
227 unsigned int crtc_w, unsigned int crtc_h,
228 uint32_t src_x, uint32_t src_y,
229 uint32_t src_w, uint32_t src_h)
231 struct omap_plane *omap_plane = to_omap_plane(plane);
232 omap_plane->enabled = true;
234 /* omap_plane_mode_set() takes adjusted src */
235 switch (omap_plane->win.rotation & 0xf) {
236 case BIT(DRM_ROTATE_90):
237 case BIT(DRM_ROTATE_270):
243 * We don't need to take a reference to the framebuffer as the DRM core
244 * has already done so for the purpose of setting plane->fb.
249 /* src values are in Q16 fixed point, convert to integer: */
250 return omap_plane_mode_set(plane, crtc, fb,
251 crtc_x, crtc_y, crtc_w, crtc_h,
252 src_x >> 16, src_y >> 16, src_w >> 16, src_h >> 16,
256 static int omap_plane_disable(struct drm_plane *plane)
258 struct omap_plane *omap_plane = to_omap_plane(plane);
260 omap_plane->win.rotation = BIT(DRM_ROTATE_0);
261 omap_plane->info.zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
262 ? 0 : omap_plane->id;
264 return omap_plane_set_enable(plane, false);
267 static void omap_plane_destroy(struct drm_plane *plane)
269 struct omap_plane *omap_plane = to_omap_plane(plane);
271 DBG("%s", omap_plane->name);
273 omap_irq_unregister(plane->dev, &omap_plane->error_irq);
275 drm_plane_cleanup(plane);
277 drm_flip_work_cleanup(&omap_plane->unpin_work);
282 int omap_plane_set_enable(struct drm_plane *plane, bool enable)
284 struct omap_plane *omap_plane = to_omap_plane(plane);
286 if (enable == omap_plane->enabled)
289 omap_plane->enabled = enable;
290 return omap_plane_apply(plane);
293 /* helper to install properties which are common to planes and crtcs */
294 void omap_plane_install_properties(struct drm_plane *plane,
295 struct drm_mode_object *obj)
297 struct drm_device *dev = plane->dev;
298 struct omap_drm_private *priv = dev->dev_private;
299 struct drm_property *prop;
302 prop = priv->rotation_prop;
304 prop = drm_mode_create_rotation_property(dev,
307 BIT(DRM_ROTATE_180) |
308 BIT(DRM_ROTATE_270) |
313 priv->rotation_prop = prop;
315 drm_object_attach_property(obj, prop, 0);
318 prop = priv->zorder_prop;
320 prop = drm_property_create_range(dev, 0, "zorder", 0, 3);
323 priv->zorder_prop = prop;
325 drm_object_attach_property(obj, prop, 0);
328 int omap_plane_set_property(struct drm_plane *plane,
329 struct drm_property *property, uint64_t val)
331 struct omap_plane *omap_plane = to_omap_plane(plane);
332 struct omap_drm_private *priv = plane->dev->dev_private;
335 if (property == priv->rotation_prop) {
336 DBG("%s: rotation: %02x", omap_plane->name, (uint32_t)val);
337 omap_plane->win.rotation = val;
338 ret = omap_plane_apply(plane);
339 } else if (property == priv->zorder_prop) {
340 DBG("%s: zorder: %02x", omap_plane->name, (uint32_t)val);
341 omap_plane->info.zorder = val;
342 ret = omap_plane_apply(plane);
348 static const struct drm_plane_funcs omap_plane_funcs = {
349 .update_plane = omap_plane_update,
350 .disable_plane = omap_plane_disable,
351 .destroy = omap_plane_destroy,
352 .set_property = omap_plane_set_property,
355 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
357 struct omap_plane *omap_plane =
358 container_of(irq, struct omap_plane, error_irq);
359 DRM_ERROR("%s: errors: %08x\n", omap_plane->name, irqstatus);
362 static const char *plane_names[] = {
363 [OMAP_DSS_GFX] = "gfx",
364 [OMAP_DSS_VIDEO1] = "vid1",
365 [OMAP_DSS_VIDEO2] = "vid2",
366 [OMAP_DSS_VIDEO3] = "vid3",
369 static const uint32_t error_irqs[] = {
370 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
371 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
372 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
373 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
376 /* initialize plane */
377 struct drm_plane *omap_plane_init(struct drm_device *dev,
378 int id, enum drm_plane_type type)
380 struct omap_drm_private *priv = dev->dev_private;
381 struct drm_plane *plane;
382 struct omap_plane *omap_plane;
383 struct omap_overlay_info *info;
386 DBG("%s: type=%d", plane_names[id], type);
388 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
390 return ERR_PTR(-ENOMEM);
392 drm_flip_work_init(&omap_plane->unpin_work,
393 "unpin", omap_plane_unpin_worker);
395 omap_plane->nformats = omap_framebuffer_get_formats(
396 omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
397 dss_feat_get_supported_color_modes(id));
399 omap_plane->name = plane_names[id];
401 plane = &omap_plane->base;
403 omap_plane->apply.pre_apply = omap_plane_pre_apply;
404 omap_plane->apply.post_apply = omap_plane_post_apply;
406 omap_plane->error_irq.irqmask = error_irqs[id];
407 omap_plane->error_irq.irq = omap_plane_error_irq;
408 omap_irq_register(dev, &omap_plane->error_irq);
410 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
411 &omap_plane_funcs, omap_plane->formats,
412 omap_plane->nformats, type);
416 omap_plane_install_properties(plane, &plane->base);
418 /* get our starting configuration, set defaults for parameters
419 * we don't currently use, etc:
421 info = &omap_plane->info;
422 info->rotation_type = OMAP_DSS_ROT_DMA;
423 info->rotation = OMAP_DSS_ROT_0;
424 info->global_alpha = 0xff;
427 /* Set defaults depending on whether we are a CRTC or overlay
429 * TODO add ioctl to give userspace an API to change this.. this
430 * will come in a subsequent patch.
432 if (type == DRM_PLANE_TYPE_PRIMARY)
433 omap_plane->info.zorder = 0;
435 omap_plane->info.zorder = id;
440 omap_irq_unregister(plane->dev, &omap_plane->error_irq);