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 dispc_ovl_set_channel_out(omap_plane->id, channel);
154 /* and finally, update omapdss: */
155 ret = dispc_ovl_setup(omap_plane->id, info, false,
156 omap_crtc_timings(crtc), false);
158 dev_err(dev->dev, "dispc_ovl_setup failed: %d\n", ret);
162 dispc_ovl_enable(omap_plane->id, true);
165 static void omap_plane_post_apply(struct omap_drm_apply *apply)
167 struct omap_plane *omap_plane =
168 container_of(apply, struct omap_plane, apply);
169 struct drm_plane *plane = &omap_plane->base;
170 struct omap_drm_private *priv = plane->dev->dev_private;
173 cb = omap_plane->apply_done_cb;
174 omap_plane->apply_done_cb.fxn = NULL;
176 drm_flip_work_commit(&omap_plane->unpin_work, priv->wq);
182 static int omap_plane_apply(struct drm_plane *plane)
185 struct omap_plane *omap_plane = to_omap_plane(plane);
186 return omap_crtc_apply(plane->crtc, &omap_plane->apply);
191 int omap_plane_mode_set(struct drm_plane *plane,
192 struct drm_crtc *crtc, struct drm_framebuffer *fb,
193 int crtc_x, int crtc_y,
194 unsigned int crtc_w, unsigned int crtc_h,
195 unsigned int src_x, unsigned int src_y,
196 unsigned int src_w, unsigned int src_h,
197 void (*fxn)(void *), void *arg)
199 struct omap_plane *omap_plane = to_omap_plane(plane);
200 struct omap_drm_window *win = &omap_plane->win;
202 win->crtc_x = crtc_x;
203 win->crtc_y = crtc_y;
204 win->crtc_w = crtc_w;
205 win->crtc_h = crtc_h;
213 /* omap_crtc should ensure that a new page flip
214 * isn't permitted while there is one pending:
216 BUG_ON(omap_plane->apply_done_cb.fxn);
218 omap_plane->apply_done_cb.fxn = fxn;
219 omap_plane->apply_done_cb.arg = arg;
222 return omap_plane_apply(plane);
225 static int omap_plane_update(struct drm_plane *plane,
226 struct drm_crtc *crtc, struct drm_framebuffer *fb,
227 int crtc_x, int crtc_y,
228 unsigned int crtc_w, unsigned int crtc_h,
229 uint32_t src_x, uint32_t src_y,
230 uint32_t src_w, uint32_t src_h)
232 struct omap_plane *omap_plane = to_omap_plane(plane);
233 omap_plane->enabled = true;
235 /* omap_plane_mode_set() takes adjusted src */
236 switch (omap_plane->win.rotation & 0xf) {
237 case BIT(DRM_ROTATE_90):
238 case BIT(DRM_ROTATE_270):
244 * We don't need to take a reference to the framebuffer as the DRM core
245 * has already done so for the purpose of setting plane->fb.
250 /* src values are in Q16 fixed point, convert to integer: */
251 return omap_plane_mode_set(plane, crtc, fb,
252 crtc_x, crtc_y, crtc_w, crtc_h,
253 src_x >> 16, src_y >> 16, src_w >> 16, src_h >> 16,
257 static int omap_plane_disable(struct drm_plane *plane)
259 struct omap_plane *omap_plane = to_omap_plane(plane);
261 omap_plane->win.rotation = BIT(DRM_ROTATE_0);
262 omap_plane->info.zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
263 ? 0 : omap_plane->id;
265 return omap_plane_set_enable(plane, false);
268 static void omap_plane_destroy(struct drm_plane *plane)
270 struct omap_plane *omap_plane = to_omap_plane(plane);
272 DBG("%s", omap_plane->name);
274 omap_irq_unregister(plane->dev, &omap_plane->error_irq);
276 drm_plane_cleanup(plane);
278 drm_flip_work_cleanup(&omap_plane->unpin_work);
283 int omap_plane_set_enable(struct drm_plane *plane, bool enable)
285 struct omap_plane *omap_plane = to_omap_plane(plane);
287 if (enable == omap_plane->enabled)
290 omap_plane->enabled = enable;
291 return omap_plane_apply(plane);
294 /* helper to install properties which are common to planes and crtcs */
295 void omap_plane_install_properties(struct drm_plane *plane,
296 struct drm_mode_object *obj)
298 struct drm_device *dev = plane->dev;
299 struct omap_drm_private *priv = dev->dev_private;
300 struct drm_property *prop;
303 prop = priv->rotation_prop;
305 prop = drm_mode_create_rotation_property(dev,
308 BIT(DRM_ROTATE_180) |
309 BIT(DRM_ROTATE_270) |
314 priv->rotation_prop = prop;
316 drm_object_attach_property(obj, prop, 0);
319 prop = priv->zorder_prop;
321 prop = drm_property_create_range(dev, 0, "zorder", 0, 3);
324 priv->zorder_prop = prop;
326 drm_object_attach_property(obj, prop, 0);
329 int omap_plane_set_property(struct drm_plane *plane,
330 struct drm_property *property, uint64_t val)
332 struct omap_plane *omap_plane = to_omap_plane(plane);
333 struct omap_drm_private *priv = plane->dev->dev_private;
336 if (property == priv->rotation_prop) {
337 DBG("%s: rotation: %02x", omap_plane->name, (uint32_t)val);
338 omap_plane->win.rotation = val;
339 ret = omap_plane_apply(plane);
340 } else if (property == priv->zorder_prop) {
341 DBG("%s: zorder: %02x", omap_plane->name, (uint32_t)val);
342 omap_plane->info.zorder = val;
343 ret = omap_plane_apply(plane);
349 static const struct drm_plane_funcs omap_plane_funcs = {
350 .update_plane = omap_plane_update,
351 .disable_plane = omap_plane_disable,
352 .destroy = omap_plane_destroy,
353 .set_property = omap_plane_set_property,
356 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
358 struct omap_plane *omap_plane =
359 container_of(irq, struct omap_plane, error_irq);
360 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name,
364 static const char *plane_names[] = {
365 [OMAP_DSS_GFX] = "gfx",
366 [OMAP_DSS_VIDEO1] = "vid1",
367 [OMAP_DSS_VIDEO2] = "vid2",
368 [OMAP_DSS_VIDEO3] = "vid3",
371 static const uint32_t error_irqs[] = {
372 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
373 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
374 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
375 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
378 /* initialize plane */
379 struct drm_plane *omap_plane_init(struct drm_device *dev,
380 int id, enum drm_plane_type type)
382 struct omap_drm_private *priv = dev->dev_private;
383 struct drm_plane *plane;
384 struct omap_plane *omap_plane;
385 struct omap_overlay_info *info;
388 DBG("%s: type=%d", plane_names[id], type);
390 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
392 return ERR_PTR(-ENOMEM);
394 drm_flip_work_init(&omap_plane->unpin_work,
395 "unpin", omap_plane_unpin_worker);
397 omap_plane->nformats = omap_framebuffer_get_formats(
398 omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
399 dss_feat_get_supported_color_modes(id));
401 omap_plane->name = plane_names[id];
403 plane = &omap_plane->base;
405 omap_plane->apply.pre_apply = omap_plane_pre_apply;
406 omap_plane->apply.post_apply = omap_plane_post_apply;
408 omap_plane->error_irq.irqmask = error_irqs[id];
409 omap_plane->error_irq.irq = omap_plane_error_irq;
410 omap_irq_register(dev, &omap_plane->error_irq);
412 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
413 &omap_plane_funcs, omap_plane->formats,
414 omap_plane->nformats, type);
418 omap_plane_install_properties(plane, &plane->base);
420 /* get our starting configuration, set defaults for parameters
421 * we don't currently use, etc:
423 info = &omap_plane->info;
424 info->rotation_type = OMAP_DSS_ROT_DMA;
425 info->rotation = OMAP_DSS_ROT_0;
426 info->global_alpha = 0xff;
429 /* Set defaults depending on whether we are a CRTC or overlay
431 * TODO add ioctl to give userspace an API to change this.. this
432 * will come in a subsequent patch.
434 if (type == DRM_PLANE_TYPE_PRIMARY)
435 omap_plane->info.zorder = 0;
437 omap_plane->info.zorder = id;
442 omap_irq_unregister(plane->dev, &omap_plane->error_irq);