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 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;
74 omap_framebuffer_unpin(val);
75 mutex_lock(&dev->mode_config.mutex);
76 drm_framebuffer_unreference(val);
77 mutex_unlock(&dev->mode_config.mutex);
80 /* update which fb (if any) is pinned for scanout */
81 static int update_pin(struct drm_plane *plane, struct drm_framebuffer *fb)
83 struct omap_plane *omap_plane = to_omap_plane(plane);
84 struct drm_framebuffer *pinned_fb = omap_plane->pinned_fb;
86 if (pinned_fb != fb) {
89 DBG("%p -> %p", pinned_fb, fb);
92 drm_framebuffer_reference(fb);
93 ret = omap_framebuffer_pin(fb);
97 drm_flip_work_queue(&omap_plane->unpin_work, pinned_fb);
100 dev_err(plane->dev->dev, "could not swap %p -> %p\n",
101 omap_plane->pinned_fb, fb);
102 drm_framebuffer_unreference(fb);
103 omap_plane->pinned_fb = NULL;
107 omap_plane->pinned_fb = fb;
113 static void omap_plane_pre_apply(struct omap_drm_apply *apply)
115 struct omap_plane *omap_plane =
116 container_of(apply, struct omap_plane, apply);
117 struct omap_drm_window *win = &omap_plane->win;
118 struct drm_plane *plane = &omap_plane->base;
119 struct drm_device *dev = plane->dev;
120 struct omap_overlay_info *info = &omap_plane->info;
121 struct drm_crtc *crtc = plane->crtc;
122 enum omap_channel channel;
123 bool enabled = omap_plane->enabled && crtc;
124 bool ilace, replication;
127 DBG("%s, enabled=%d", omap_plane->name, enabled);
129 /* if fb has changed, pin new fb: */
130 update_pin(plane, enabled ? plane->fb : NULL);
133 dispc_ovl_enable(omap_plane->id, false);
137 channel = omap_crtc_channel(crtc);
139 /* update scanout: */
140 omap_framebuffer_update_scanout(plane->fb, win, info);
142 DBG("%dx%d -> %dx%d (%d)", info->width, info->height,
143 info->out_width, info->out_height,
145 DBG("%d,%d %08x %08x", info->pos_x, info->pos_y,
146 info->paddr, info->p_uv_addr);
152 /* and finally, update omapdss: */
153 ret = dispc_ovl_setup(omap_plane->id, info,
154 replication, 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;
170 struct omap_overlay_info *info = &omap_plane->info;
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);
181 if (omap_plane->enabled) {
182 omap_framebuffer_flush(plane->fb, info->pos_x, info->pos_y,
183 info->out_width, info->out_height);
187 static int apply(struct drm_plane *plane)
190 struct omap_plane *omap_plane = to_omap_plane(plane);
191 return omap_crtc_apply(plane->crtc, &omap_plane->apply);
196 int omap_plane_mode_set(struct drm_plane *plane,
197 struct drm_crtc *crtc, struct drm_framebuffer *fb,
198 int crtc_x, int crtc_y,
199 unsigned int crtc_w, unsigned int crtc_h,
200 uint32_t src_x, uint32_t src_y,
201 uint32_t src_w, uint32_t src_h,
202 void (*fxn)(void *), void *arg)
204 struct omap_plane *omap_plane = to_omap_plane(plane);
205 struct omap_drm_window *win = &omap_plane->win;
207 win->crtc_x = crtc_x;
208 win->crtc_y = crtc_y;
209 win->crtc_w = crtc_w;
210 win->crtc_h = crtc_h;
212 /* src values are in Q16 fixed point, convert to integer: */
213 win->src_x = src_x >> 16;
214 win->src_y = src_y >> 16;
215 win->src_w = src_w >> 16;
216 win->src_h = src_h >> 16;
219 /* omap_crtc should ensure that a new page flip
220 * isn't permitted while there is one pending:
222 BUG_ON(omap_plane->apply_done_cb.fxn);
224 omap_plane->apply_done_cb.fxn = fxn;
225 omap_plane->apply_done_cb.arg = arg;
229 drm_framebuffer_unreference(plane->fb);
231 drm_framebuffer_reference(fb);
239 static int omap_plane_update(struct drm_plane *plane,
240 struct drm_crtc *crtc, struct drm_framebuffer *fb,
241 int crtc_x, int crtc_y,
242 unsigned int crtc_w, unsigned int crtc_h,
243 uint32_t src_x, uint32_t src_y,
244 uint32_t src_w, uint32_t src_h)
246 struct omap_plane *omap_plane = to_omap_plane(plane);
247 omap_plane->enabled = true;
249 /* omap_plane_mode_set() takes adjusted src */
250 switch (omap_plane->win.rotation & 0xf) {
251 case BIT(DRM_ROTATE_90):
252 case BIT(DRM_ROTATE_270):
257 return omap_plane_mode_set(plane, crtc, fb,
258 crtc_x, crtc_y, crtc_w, crtc_h,
259 src_x, src_y, src_w, src_h,
263 static int omap_plane_disable(struct drm_plane *plane)
265 struct omap_plane *omap_plane = to_omap_plane(plane);
266 omap_plane->win.rotation = BIT(DRM_ROTATE_0);
267 return omap_plane_dpms(plane, DRM_MODE_DPMS_OFF);
270 static void omap_plane_destroy(struct drm_plane *plane)
272 struct omap_plane *omap_plane = to_omap_plane(plane);
274 DBG("%s", omap_plane->name);
276 omap_irq_unregister(plane->dev, &omap_plane->error_irq);
278 omap_plane_disable(plane);
279 drm_plane_cleanup(plane);
281 drm_flip_work_cleanup(&omap_plane->unpin_work);
286 int omap_plane_dpms(struct drm_plane *plane, int mode)
288 struct omap_plane *omap_plane = to_omap_plane(plane);
289 bool enabled = (mode == DRM_MODE_DPMS_ON);
292 if (enabled != omap_plane->enabled) {
293 omap_plane->enabled = enabled;
300 /* helper to install properties which are common to planes and crtcs */
301 void omap_plane_install_properties(struct drm_plane *plane,
302 struct drm_mode_object *obj)
304 struct drm_device *dev = plane->dev;
305 struct omap_drm_private *priv = dev->dev_private;
306 struct drm_property *prop;
309 prop = priv->rotation_prop;
311 const struct drm_prop_enum_list props[] = {
312 { DRM_ROTATE_0, "rotate-0" },
313 { DRM_ROTATE_90, "rotate-90" },
314 { DRM_ROTATE_180, "rotate-180" },
315 { DRM_ROTATE_270, "rotate-270" },
316 { DRM_REFLECT_X, "reflect-x" },
317 { DRM_REFLECT_Y, "reflect-y" },
319 prop = drm_property_create_bitmask(dev, 0, "rotation",
320 props, ARRAY_SIZE(props));
323 priv->rotation_prop = prop;
325 drm_object_attach_property(obj, prop, 0);
328 prop = priv->zorder_prop;
330 prop = drm_property_create_range(dev, 0, "zorder", 0, 3);
333 priv->zorder_prop = prop;
335 drm_object_attach_property(obj, prop, 0);
338 int omap_plane_set_property(struct drm_plane *plane,
339 struct drm_property *property, uint64_t val)
341 struct omap_plane *omap_plane = to_omap_plane(plane);
342 struct omap_drm_private *priv = plane->dev->dev_private;
345 if (property == priv->rotation_prop) {
346 DBG("%s: rotation: %02x", omap_plane->name, (uint32_t)val);
347 omap_plane->win.rotation = val;
349 } else if (property == priv->zorder_prop) {
350 DBG("%s: zorder: %02x", omap_plane->name, (uint32_t)val);
351 omap_plane->info.zorder = val;
358 static const struct drm_plane_funcs omap_plane_funcs = {
359 .update_plane = omap_plane_update,
360 .disable_plane = omap_plane_disable,
361 .destroy = omap_plane_destroy,
362 .set_property = omap_plane_set_property,
365 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
367 struct omap_plane *omap_plane =
368 container_of(irq, struct omap_plane, error_irq);
369 DRM_ERROR("%s: errors: %08x\n", omap_plane->name, irqstatus);
372 static const char *plane_names[] = {
373 [OMAP_DSS_GFX] = "gfx",
374 [OMAP_DSS_VIDEO1] = "vid1",
375 [OMAP_DSS_VIDEO2] = "vid2",
376 [OMAP_DSS_VIDEO3] = "vid3",
379 static const uint32_t error_irqs[] = {
380 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
381 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
382 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
383 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
386 /* initialize plane */
387 struct drm_plane *omap_plane_init(struct drm_device *dev,
388 int id, bool private_plane)
390 struct omap_drm_private *priv = dev->dev_private;
391 struct drm_plane *plane = NULL;
392 struct omap_plane *omap_plane;
393 struct omap_overlay_info *info;
396 DBG("%s: priv=%d", plane_names[id], private_plane);
398 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
402 ret = drm_flip_work_init(&omap_plane->unpin_work, 16,
403 "unpin", unpin_worker);
405 dev_err(dev->dev, "could not allocate unpin FIFO\n");
409 omap_plane->nformats = omap_framebuffer_get_formats(
410 omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
411 dss_feat_get_supported_color_modes(id));
413 omap_plane->name = plane_names[id];
415 plane = &omap_plane->base;
417 omap_plane->apply.pre_apply = omap_plane_pre_apply;
418 omap_plane->apply.post_apply = omap_plane_post_apply;
420 omap_plane->error_irq.irqmask = error_irqs[id];
421 omap_plane->error_irq.irq = omap_plane_error_irq;
422 omap_irq_register(dev, &omap_plane->error_irq);
424 drm_plane_init(dev, plane, (1 << priv->num_crtcs) - 1, &omap_plane_funcs,
425 omap_plane->formats, omap_plane->nformats, private_plane);
427 omap_plane_install_properties(plane, &plane->base);
429 /* get our starting configuration, set defaults for parameters
430 * we don't currently use, etc:
432 info = &omap_plane->info;
433 info->rotation_type = OMAP_DSS_ROT_DMA;
434 info->rotation = OMAP_DSS_ROT_0;
435 info->global_alpha = 0xff;
438 /* Set defaults depending on whether we are a CRTC or overlay
440 * TODO add ioctl to give userspace an API to change this.. this
441 * will come in a subsequent patch.
444 omap_plane->info.zorder = 0;
446 omap_plane->info.zorder = id;
452 omap_plane_destroy(plane);