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_helper.h>
21 #include <drm/drm_plane_helper.h>
23 #include "omap_dmm_tiler.h"
26 /* some hackery because omapdss has an 'enum omap_plane' (which would be
27 * better named omap_plane_id).. and compiler seems unhappy about having
28 * both a 'struct omap_plane' and 'enum omap_plane'
30 #define omap_plane _omap_plane
36 #define to_omap_plane(x) container_of(x, struct omap_plane, base)
39 struct drm_plane base;
40 int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
46 struct omap_drm_irq error_irq;
49 struct omap_plane_state {
50 struct drm_plane_state base;
55 static inline struct omap_plane_state *
56 to_omap_plane_state(struct drm_plane_state *state)
58 return container_of(state, struct omap_plane_state, base);
61 static int omap_plane_prepare_fb(struct drm_plane *plane,
62 struct drm_framebuffer *fb,
63 const struct drm_plane_state *new_state)
65 return omap_framebuffer_pin(fb);
68 static void omap_plane_cleanup_fb(struct drm_plane *plane,
69 struct drm_framebuffer *fb,
70 const struct drm_plane_state *old_state)
72 omap_framebuffer_unpin(fb);
75 static void omap_plane_atomic_update(struct drm_plane *plane,
76 struct drm_plane_state *old_state)
78 struct omap_plane *omap_plane = to_omap_plane(plane);
79 struct drm_plane_state *state = plane->state;
80 struct omap_plane_state *omap_state = to_omap_plane_state(state);
81 struct omap_overlay_info info;
82 struct omap_drm_window win;
85 DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb);
87 memset(&info, 0, sizeof(info));
88 info.rotation_type = OMAP_DSS_ROT_DMA;
89 info.rotation = OMAP_DSS_ROT_0;
90 info.global_alpha = 0xff;
92 info.zorder = omap_state->zorder;
94 memset(&win, 0, sizeof(win));
95 win.rotation = state->rotation;
96 win.crtc_x = state->crtc_x;
97 win.crtc_y = state->crtc_y;
98 win.crtc_w = state->crtc_w;
99 win.crtc_h = state->crtc_h;
102 * src values are in Q16 fixed point, convert to integer.
103 * omap_framebuffer_update_scanout() takes adjusted src.
105 win.src_x = state->src_x >> 16;
106 win.src_y = state->src_y >> 16;
108 switch (state->rotation & 0xf) {
109 case BIT(DRM_ROTATE_90):
110 case BIT(DRM_ROTATE_270):
111 win.src_w = state->src_h >> 16;
112 win.src_h = state->src_w >> 16;
115 win.src_w = state->src_w >> 16;
116 win.src_h = state->src_h >> 16;
120 /* update scanout: */
121 omap_framebuffer_update_scanout(state->fb, &win, &info);
123 DBG("%dx%d -> %dx%d (%d)", info.width, info.height,
124 info.out_width, info.out_height,
126 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y,
127 &info.paddr, &info.p_uv_addr);
129 dispc_ovl_set_channel_out(omap_plane->id,
130 omap_crtc_channel(state->crtc));
132 /* and finally, update omapdss: */
133 ret = dispc_ovl_setup(omap_plane->id, &info, false,
134 omap_crtc_timings(state->crtc), false);
136 dispc_ovl_enable(omap_plane->id, false);
140 dispc_ovl_enable(omap_plane->id, true);
143 static void omap_plane_atomic_disable(struct drm_plane *plane,
144 struct drm_plane_state *old_state)
146 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state);
147 struct omap_plane *omap_plane = to_omap_plane(plane);
149 plane->state->rotation = BIT(DRM_ROTATE_0);
150 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
151 ? 0 : omap_plane->id;
153 dispc_ovl_enable(omap_plane->id, false);
156 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = {
157 .prepare_fb = omap_plane_prepare_fb,
158 .cleanup_fb = omap_plane_cleanup_fb,
159 .atomic_update = omap_plane_atomic_update,
160 .atomic_disable = omap_plane_atomic_disable,
163 static void omap_plane_reset(struct drm_plane *plane)
165 struct omap_plane *omap_plane = to_omap_plane(plane);
166 struct omap_plane_state *omap_state;
168 if (plane->state && plane->state->fb)
169 drm_framebuffer_unreference(plane->state->fb);
174 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL);
175 if (omap_state == NULL)
179 * Set defaults depending on whether we are a primary or overlay
182 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
183 ? 0 : omap_plane->id;
184 omap_state->base.rotation = BIT(DRM_ROTATE_0);
186 plane->state = &omap_state->base;
187 plane->state->plane = plane;
190 static void omap_plane_destroy(struct drm_plane *plane)
192 struct omap_plane *omap_plane = to_omap_plane(plane);
194 DBG("%s", omap_plane->name);
196 omap_irq_unregister(plane->dev, &omap_plane->error_irq);
198 drm_plane_cleanup(plane);
203 /* helper to install properties which are common to planes and crtcs */
204 void omap_plane_install_properties(struct drm_plane *plane,
205 struct drm_mode_object *obj)
207 struct drm_device *dev = plane->dev;
208 struct omap_drm_private *priv = dev->dev_private;
211 struct drm_property *prop = dev->mode_config.rotation_property;
213 drm_object_attach_property(obj, prop, 0);
216 drm_object_attach_property(obj, priv->zorder_prop, 0);
219 static struct drm_plane_state *
220 omap_plane_atomic_duplicate_state(struct drm_plane *plane)
222 struct omap_plane_state *state;
223 struct omap_plane_state *copy;
225 if (WARN_ON(!plane->state))
228 state = to_omap_plane_state(plane->state);
229 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
233 __drm_atomic_helper_plane_duplicate_state(plane, ©->base);
238 static void omap_plane_atomic_destroy_state(struct drm_plane *plane,
239 struct drm_plane_state *state)
241 __drm_atomic_helper_plane_destroy_state(plane, state);
242 kfree(to_omap_plane_state(state));
245 static int omap_plane_atomic_set_property(struct drm_plane *plane,
246 struct drm_plane_state *state,
247 struct drm_property *property,
250 struct omap_drm_private *priv = plane->dev->dev_private;
251 struct omap_plane_state *omap_state = to_omap_plane_state(state);
253 if (property == priv->zorder_prop)
254 omap_state->zorder = val;
261 static int omap_plane_atomic_get_property(struct drm_plane *plane,
262 const struct drm_plane_state *state,
263 struct drm_property *property,
266 struct omap_drm_private *priv = plane->dev->dev_private;
267 const struct omap_plane_state *omap_state =
268 container_of(state, const struct omap_plane_state, base);
270 if (property == priv->zorder_prop)
271 *val = omap_state->zorder;
278 static const struct drm_plane_funcs omap_plane_funcs = {
279 .update_plane = drm_atomic_helper_update_plane,
280 .disable_plane = drm_atomic_helper_disable_plane,
281 .reset = omap_plane_reset,
282 .destroy = omap_plane_destroy,
283 .set_property = drm_atomic_helper_plane_set_property,
284 .atomic_duplicate_state = omap_plane_atomic_duplicate_state,
285 .atomic_destroy_state = omap_plane_atomic_destroy_state,
286 .atomic_set_property = omap_plane_atomic_set_property,
287 .atomic_get_property = omap_plane_atomic_get_property,
290 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
292 struct omap_plane *omap_plane =
293 container_of(irq, struct omap_plane, error_irq);
294 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name,
298 static const char *plane_names[] = {
299 [OMAP_DSS_GFX] = "gfx",
300 [OMAP_DSS_VIDEO1] = "vid1",
301 [OMAP_DSS_VIDEO2] = "vid2",
302 [OMAP_DSS_VIDEO3] = "vid3",
305 static const uint32_t error_irqs[] = {
306 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
307 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
308 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
309 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
312 /* initialize plane */
313 struct drm_plane *omap_plane_init(struct drm_device *dev,
314 int id, enum drm_plane_type type)
316 struct omap_drm_private *priv = dev->dev_private;
317 struct drm_plane *plane;
318 struct omap_plane *omap_plane;
321 DBG("%s: type=%d", plane_names[id], type);
323 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
325 return ERR_PTR(-ENOMEM);
327 omap_plane->nformats = omap_framebuffer_get_formats(
328 omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
329 dss_feat_get_supported_color_modes(id));
331 omap_plane->name = plane_names[id];
333 plane = &omap_plane->base;
335 omap_plane->error_irq.irqmask = error_irqs[id];
336 omap_plane->error_irq.irq = omap_plane_error_irq;
337 omap_irq_register(dev, &omap_plane->error_irq);
339 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
340 &omap_plane_funcs, omap_plane->formats,
341 omap_plane->nformats, type);
345 drm_plane_helper_add(plane, &omap_plane_helper_funcs);
347 omap_plane_install_properties(plane, &plane->base);
352 omap_irq_unregister(plane->dev, &omap_plane->error_irq);