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25 * DOC: atomic plane helpers
27 * The functions here are used by the atomic plane helper functions to
28 * implement legacy plane updates (i.e., drm_plane->update_plane() and
29 * drm_plane->disable_plane()). This allows plane updates to use the
30 * atomic state infrastructure and perform plane updates as separate
31 * prepare/check/commit/cleanup steps.
35 #include <drm/drm_atomic_helper.h>
36 #include <drm/drm_plane_helper.h>
37 #include "intel_drv.h"
40 * intel_create_plane_state - create plane state object
43 * Allocates a fresh plane state for the given plane and sets some of
44 * the state values to sensible initial values.
46 * Returns: A newly allocated plane state, or NULL on failure
48 struct intel_plane_state
*
49 intel_create_plane_state(struct drm_plane
*plane
)
51 struct intel_plane_state
*state
;
53 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
57 state
->base
.plane
= plane
;
58 state
->base
.rotation
= BIT(DRM_ROTATE_0
);
59 state
->ckey
.flags
= I915_SET_COLORKEY_NONE
;
65 * intel_plane_duplicate_state - duplicate plane state
68 * Allocates and returns a copy of the plane state (both common and
69 * Intel-specific) for the specified plane.
71 * Returns: The newly allocated plane state, or NULL on failure.
73 struct drm_plane_state
*
74 intel_plane_duplicate_state(struct drm_plane
*plane
)
76 struct drm_plane_state
*state
;
77 struct intel_plane_state
*intel_state
;
79 if (WARN_ON(!plane
->state
))
80 intel_state
= intel_create_plane_state(plane
);
82 intel_state
= kmemdup(plane
->state
, sizeof(*intel_state
),
88 state
= &intel_state
->base
;
90 __drm_atomic_helper_plane_duplicate_state(plane
, state
);
96 * intel_plane_destroy_state - destroy plane state
98 * @state: state object to destroy
100 * Destroys the plane state (both common and Intel-specific) for the
104 intel_plane_destroy_state(struct drm_plane
*plane
,
105 struct drm_plane_state
*state
)
107 drm_atomic_helper_plane_destroy_state(plane
, state
);
110 static int intel_plane_atomic_check(struct drm_plane
*plane
,
111 struct drm_plane_state
*state
)
113 struct drm_crtc
*crtc
= state
->crtc
;
114 struct intel_crtc
*intel_crtc
;
115 struct intel_crtc_state
*crtc_state
;
116 struct intel_plane
*intel_plane
= to_intel_plane(plane
);
117 struct intel_plane_state
*intel_state
= to_intel_plane_state(state
);
118 struct drm_crtc_state
*drm_crtc_state
;
121 crtc
= crtc
? crtc
: plane
->state
->crtc
;
122 intel_crtc
= to_intel_crtc(crtc
);
125 * Both crtc and plane->crtc could be NULL if we're updating a
126 * property while the plane is disabled. We don't actually have
127 * anything driver-specific we need to test in that case, so
128 * just return success.
133 drm_crtc_state
= drm_atomic_get_existing_crtc_state(state
->state
, crtc
);
134 if (WARN_ON(!drm_crtc_state
))
137 crtc_state
= to_intel_crtc_state(drm_crtc_state
);
140 * The original src/dest coordinates are stored in state->base, but
141 * we want to keep another copy internal to our driver that we can
142 * clip/modify ourselves.
144 intel_state
->src
.x1
= state
->src_x
;
145 intel_state
->src
.y1
= state
->src_y
;
146 intel_state
->src
.x2
= state
->src_x
+ state
->src_w
;
147 intel_state
->src
.y2
= state
->src_y
+ state
->src_h
;
148 intel_state
->dst
.x1
= state
->crtc_x
;
149 intel_state
->dst
.y1
= state
->crtc_y
;
150 intel_state
->dst
.x2
= state
->crtc_x
+ state
->crtc_w
;
151 intel_state
->dst
.y2
= state
->crtc_y
+ state
->crtc_h
;
153 /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
154 intel_state
->clip
.x1
= 0;
155 intel_state
->clip
.y1
= 0;
156 intel_state
->clip
.x2
=
157 crtc_state
->base
.active
? crtc_state
->pipe_src_w
: 0;
158 intel_state
->clip
.y2
=
159 crtc_state
->base
.active
? crtc_state
->pipe_src_h
: 0;
161 if (state
->fb
&& intel_rotation_90_or_270(state
->rotation
)) {
162 if (!(state
->fb
->modifier
[0] == I915_FORMAT_MOD_Y_TILED
||
163 state
->fb
->modifier
[0] == I915_FORMAT_MOD_Yf_TILED
)) {
164 DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
169 * 90/270 is not allowed with RGB64 16:16:16:16,
170 * RGB 16-bit 5:6:5, and Indexed 8-bit.
171 * TBD: Add RGB64 case once its added in supported format list.
173 switch (state
->fb
->pixel_format
) {
175 case DRM_FORMAT_RGB565
:
176 DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
177 drm_get_format_name(state
->fb
->pixel_format
));
185 intel_state
->visible
= false;
186 ret
= intel_plane
->check_plane(plane
, crtc_state
, intel_state
);
190 return intel_plane_atomic_calc_changes(&crtc_state
->base
, state
);
193 static void intel_plane_atomic_update(struct drm_plane
*plane
,
194 struct drm_plane_state
*old_state
)
196 struct intel_plane
*intel_plane
= to_intel_plane(plane
);
197 struct intel_plane_state
*intel_state
=
198 to_intel_plane_state(plane
->state
);
200 intel_plane
->commit_plane(plane
, intel_state
);
203 const struct drm_plane_helper_funcs intel_plane_helper_funcs
= {
204 .prepare_fb
= intel_prepare_plane_fb
,
205 .cleanup_fb
= intel_cleanup_plane_fb
,
206 .atomic_check
= intel_plane_atomic_check
,
207 .atomic_update
= intel_plane_atomic_update
,
211 * intel_plane_atomic_get_property - fetch plane property value
212 * @plane: plane to fetch property for
213 * @state: state containing the property value
214 * @property: property to look up
215 * @val: pointer to write property value into
217 * The DRM core does not store shadow copies of properties for
218 * atomic-capable drivers. This entrypoint is used to fetch
219 * the current value of a driver-specific plane property.
222 intel_plane_atomic_get_property(struct drm_plane
*plane
,
223 const struct drm_plane_state
*state
,
224 struct drm_property
*property
,
227 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property
->name
);
232 * intel_plane_atomic_set_property - set plane property value
233 * @plane: plane to set property for
234 * @state: state to update property value in
235 * @property: property to set
236 * @val: value to set property to
238 * Writes the specified property value for a plane into the provided atomic
241 * Returns 0 on success, -EINVAL on unrecognized properties
244 intel_plane_atomic_set_property(struct drm_plane
*plane
,
245 struct drm_plane_state
*state
,
246 struct drm_property
*property
,
249 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property
->name
);