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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
= DRM_MODE_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 intel_state
= kmemdup(plane
->state
, sizeof(*intel_state
), GFP_KERNEL
);
84 state
= &intel_state
->base
;
86 __drm_atomic_helper_plane_duplicate_state(plane
, state
);
88 intel_state
->vma
= NULL
;
94 * intel_plane_destroy_state - destroy plane state
96 * @state: state object to destroy
98 * Destroys the plane state (both common and Intel-specific) for the
102 intel_plane_destroy_state(struct drm_plane
*plane
,
103 struct drm_plane_state
*state
)
105 WARN_ON(to_intel_plane_state(state
)->vma
);
107 drm_atomic_helper_plane_destroy_state(plane
, state
);
110 int intel_plane_atomic_check_with_state(struct intel_crtc_state
*crtc_state
,
111 struct intel_plane_state
*intel_state
)
113 struct drm_plane
*plane
= intel_state
->base
.plane
;
114 struct drm_i915_private
*dev_priv
= to_i915(plane
->dev
);
115 struct drm_plane_state
*state
= &intel_state
->base
;
116 struct intel_plane
*intel_plane
= to_intel_plane(plane
);
117 const struct drm_display_mode
*adjusted_mode
=
118 &crtc_state
->base
.adjusted_mode
;
122 * Both crtc and plane->crtc could be NULL if we're updating a
123 * property while the plane is disabled. We don't actually have
124 * anything driver-specific we need to test in that case, so
125 * just return success.
127 if (!intel_state
->base
.crtc
&& !plane
->state
->crtc
)
130 /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
131 intel_state
->clip
.x1
= 0;
132 intel_state
->clip
.y1
= 0;
133 intel_state
->clip
.x2
=
134 crtc_state
->base
.enable
? crtc_state
->pipe_src_w
: 0;
135 intel_state
->clip
.y2
=
136 crtc_state
->base
.enable
? crtc_state
->pipe_src_h
: 0;
138 if (state
->fb
&& drm_rotation_90_or_270(state
->rotation
)) {
139 struct drm_format_name_buf format_name
;
141 if (state
->fb
->modifier
!= I915_FORMAT_MOD_Y_TILED
&&
142 state
->fb
->modifier
!= I915_FORMAT_MOD_Yf_TILED
) {
143 DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
148 * 90/270 is not allowed with RGB64 16:16:16:16,
149 * RGB 16-bit 5:6:5, and Indexed 8-bit.
150 * TBD: Add RGB64 case once its added in supported format list.
152 switch (state
->fb
->format
->format
) {
154 case DRM_FORMAT_RGB565
:
155 DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
156 drm_get_format_name(state
->fb
->format
->format
,
165 /* CHV ignores the mirror bit when the rotate bit is set :( */
166 if (IS_CHERRYVIEW(dev_priv
) &&
167 state
->rotation
& DRM_MODE_ROTATE_180
&&
168 state
->rotation
& DRM_MODE_REFLECT_X
) {
169 DRM_DEBUG_KMS("Cannot rotate and reflect at the same time\n");
173 intel_state
->base
.visible
= false;
174 ret
= intel_plane
->check_plane(intel_plane
, crtc_state
, intel_state
);
179 * Y-tiling is not supported in IF-ID Interlace mode in
182 if (state
->fb
&& INTEL_GEN(dev_priv
) >= 9 && crtc_state
->base
.enable
&&
183 adjusted_mode
->flags
& DRM_MODE_FLAG_INTERLACE
) {
184 if (state
->fb
->modifier
== I915_FORMAT_MOD_Y_TILED
||
185 state
->fb
->modifier
== I915_FORMAT_MOD_Yf_TILED
) {
186 DRM_DEBUG_KMS("Y/Yf tiling not supported in IF-ID mode\n");
191 /* FIXME pre-g4x don't work like this */
192 if (intel_state
->base
.visible
)
193 crtc_state
->active_planes
|= BIT(intel_plane
->id
);
195 crtc_state
->active_planes
&= ~BIT(intel_plane
->id
);
197 return intel_plane_atomic_calc_changes(&crtc_state
->base
, state
);
200 static int intel_plane_atomic_check(struct drm_plane
*plane
,
201 struct drm_plane_state
*state
)
203 struct drm_crtc
*crtc
= state
->crtc
;
204 struct drm_crtc_state
*drm_crtc_state
;
206 crtc
= crtc
? crtc
: plane
->state
->crtc
;
209 * Both crtc and plane->crtc could be NULL if we're updating a
210 * property while the plane is disabled. We don't actually have
211 * anything driver-specific we need to test in that case, so
212 * just return success.
217 drm_crtc_state
= drm_atomic_get_existing_crtc_state(state
->state
, crtc
);
218 if (WARN_ON(!drm_crtc_state
))
221 return intel_plane_atomic_check_with_state(to_intel_crtc_state(drm_crtc_state
),
222 to_intel_plane_state(state
));
225 static void intel_plane_atomic_update(struct drm_plane
*plane
,
226 struct drm_plane_state
*old_state
)
228 struct intel_plane
*intel_plane
= to_intel_plane(plane
);
229 struct intel_plane_state
*intel_state
=
230 to_intel_plane_state(plane
->state
);
231 struct drm_crtc
*crtc
= plane
->state
->crtc
?: old_state
->crtc
;
233 if (intel_state
->base
.visible
) {
234 trace_intel_update_plane(plane
,
235 to_intel_crtc(crtc
));
237 intel_plane
->update_plane(intel_plane
,
238 to_intel_crtc_state(crtc
->state
),
241 trace_intel_disable_plane(plane
,
242 to_intel_crtc(crtc
));
244 intel_plane
->disable_plane(intel_plane
, to_intel_crtc(crtc
));
248 const struct drm_plane_helper_funcs intel_plane_helper_funcs
= {
249 .prepare_fb
= intel_prepare_plane_fb
,
250 .cleanup_fb
= intel_cleanup_plane_fb
,
251 .atomic_check
= intel_plane_atomic_check
,
252 .atomic_update
= intel_plane_atomic_update
,
256 * intel_plane_atomic_get_property - fetch plane property value
257 * @plane: plane to fetch property for
258 * @state: state containing the property value
259 * @property: property to look up
260 * @val: pointer to write property value into
262 * The DRM core does not store shadow copies of properties for
263 * atomic-capable drivers. This entrypoint is used to fetch
264 * the current value of a driver-specific plane property.
267 intel_plane_atomic_get_property(struct drm_plane
*plane
,
268 const struct drm_plane_state
*state
,
269 struct drm_property
*property
,
272 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property
->name
);
277 * intel_plane_atomic_set_property - set plane property value
278 * @plane: plane to set property for
279 * @state: state to update property value in
280 * @property: property to set
281 * @val: value to set property to
283 * Writes the specified property value for a plane into the provided atomic
286 * Returns 0 on success, -EINVAL on unrecognized properties
289 intel_plane_atomic_set_property(struct drm_plane
*plane
,
290 struct drm_plane_state
*state
,
291 struct drm_property
*property
,
294 DRM_DEBUG_KMS("Unknown plane property '%s'\n", property
->name
);