Line data Source code
1 : /*
2 : * Copyright © 2014 Intel Corporation
3 : *
4 : * Permission is hereby granted, free of charge, to any person obtaining a
5 : * copy of this software and associated documentation files (the "Software"),
6 : * to deal in the Software without restriction, including without limitation
7 : * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 : * and/or sell copies of the Software, and to permit persons to whom the
9 : * Software is furnished to do so, subject to the following conditions:
10 : *
11 : * The above copyright notice and this permission notice (including the next
12 : * paragraph) shall be included in all copies or substantial portions of the
13 : * Software.
14 : *
15 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 : * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 : * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 : * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 : * DEALINGS IN THE SOFTWARE.
22 : */
23 :
24 : /**
25 : * DOC: atomic plane helpers
26 : *
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.
32 : */
33 :
34 : #include <dev/pci/drm/drmP.h>
35 : #include <dev/pci/drm/drm_atomic_helper.h>
36 : #include <dev/pci/drm/drm_plane_helper.h>
37 : #include "intel_drv.h"
38 :
39 : /**
40 : * intel_create_plane_state - create plane state object
41 : * @plane: drm plane
42 : *
43 : * Allocates a fresh plane state for the given plane and sets some of
44 : * the state values to sensible initial values.
45 : *
46 : * Returns: A newly allocated plane state, or NULL on failure
47 : */
48 : struct intel_plane_state *
49 0 : intel_create_plane_state(struct drm_plane *plane)
50 : {
51 : struct intel_plane_state *state;
52 :
53 0 : state = kzalloc(sizeof(*state), GFP_KERNEL);
54 0 : if (!state)
55 0 : return NULL;
56 :
57 0 : state->base.plane = plane;
58 0 : state->base.rotation = BIT(DRM_ROTATE_0);
59 0 : state->ckey.flags = I915_SET_COLORKEY_NONE;
60 :
61 0 : return state;
62 0 : }
63 :
64 : /**
65 : * intel_plane_duplicate_state - duplicate plane state
66 : * @plane: drm plane
67 : *
68 : * Allocates and returns a copy of the plane state (both common and
69 : * Intel-specific) for the specified plane.
70 : *
71 : * Returns: The newly allocated plane state, or NULL on failure.
72 : */
73 : struct drm_plane_state *
74 0 : intel_plane_duplicate_state(struct drm_plane *plane)
75 : {
76 : struct drm_plane_state *state;
77 : struct intel_plane_state *intel_state;
78 :
79 0 : intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL);
80 :
81 0 : if (!intel_state)
82 0 : return NULL;
83 :
84 0 : state = &intel_state->base;
85 :
86 0 : __drm_atomic_helper_plane_duplicate_state(plane, state);
87 :
88 0 : return state;
89 0 : }
90 :
91 : /**
92 : * intel_plane_destroy_state - destroy plane state
93 : * @plane: drm plane
94 : * @state: state object to destroy
95 : *
96 : * Destroys the plane state (both common and Intel-specific) for the
97 : * specified plane.
98 : */
99 : void
100 0 : intel_plane_destroy_state(struct drm_plane *plane,
101 : struct drm_plane_state *state)
102 : {
103 0 : drm_atomic_helper_plane_destroy_state(plane, state);
104 0 : }
105 :
106 0 : static int intel_plane_atomic_check(struct drm_plane *plane,
107 : struct drm_plane_state *state)
108 : {
109 0 : struct drm_crtc *crtc = state->crtc;
110 : struct intel_crtc *intel_crtc;
111 : struct intel_crtc_state *crtc_state;
112 0 : struct intel_plane *intel_plane = to_intel_plane(plane);
113 0 : struct intel_plane_state *intel_state = to_intel_plane_state(state);
114 : struct drm_crtc_state *drm_crtc_state;
115 : int ret;
116 :
117 0 : crtc = crtc ? crtc : plane->state->crtc;
118 0 : intel_crtc = to_intel_crtc(crtc);
119 :
120 : /*
121 : * Both crtc and plane->crtc could be NULL if we're updating a
122 : * property while the plane is disabled. We don't actually have
123 : * anything driver-specific we need to test in that case, so
124 : * just return success.
125 : */
126 0 : if (!crtc)
127 0 : return 0;
128 :
129 0 : drm_crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
130 0 : if (WARN_ON(!drm_crtc_state))
131 0 : return -EINVAL;
132 :
133 0 : crtc_state = to_intel_crtc_state(drm_crtc_state);
134 :
135 : /*
136 : * The original src/dest coordinates are stored in state->base, but
137 : * we want to keep another copy internal to our driver that we can
138 : * clip/modify ourselves.
139 : */
140 0 : intel_state->src.x1 = state->src_x;
141 0 : intel_state->src.y1 = state->src_y;
142 0 : intel_state->src.x2 = state->src_x + state->src_w;
143 0 : intel_state->src.y2 = state->src_y + state->src_h;
144 0 : intel_state->dst.x1 = state->crtc_x;
145 0 : intel_state->dst.y1 = state->crtc_y;
146 0 : intel_state->dst.x2 = state->crtc_x + state->crtc_w;
147 0 : intel_state->dst.y2 = state->crtc_y + state->crtc_h;
148 :
149 : /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */
150 0 : intel_state->clip.x1 = 0;
151 0 : intel_state->clip.y1 = 0;
152 0 : intel_state->clip.x2 =
153 0 : crtc_state->base.active ? crtc_state->pipe_src_w : 0;
154 0 : intel_state->clip.y2 =
155 0 : crtc_state->base.active ? crtc_state->pipe_src_h : 0;
156 :
157 0 : if (state->fb && intel_rotation_90_or_270(state->rotation)) {
158 0 : if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED ||
159 0 : state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) {
160 : DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n");
161 0 : return -EINVAL;
162 : }
163 :
164 : /*
165 : * 90/270 is not allowed with RGB64 16:16:16:16,
166 : * RGB 16-bit 5:6:5, and Indexed 8-bit.
167 : * TBD: Add RGB64 case once its added in supported format list.
168 : */
169 0 : switch (state->fb->pixel_format) {
170 : case DRM_FORMAT_C8:
171 : case DRM_FORMAT_RGB565:
172 : DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n",
173 : drm_get_format_name(state->fb->pixel_format));
174 0 : return -EINVAL;
175 :
176 : default:
177 : break;
178 : }
179 : }
180 :
181 0 : intel_state->visible = false;
182 0 : ret = intel_plane->check_plane(plane, crtc_state, intel_state);
183 0 : if (ret)
184 0 : return ret;
185 :
186 0 : return intel_plane_atomic_calc_changes(&crtc_state->base, state);
187 0 : }
188 :
189 0 : static void intel_plane_atomic_update(struct drm_plane *plane,
190 : struct drm_plane_state *old_state)
191 : {
192 0 : struct intel_plane *intel_plane = to_intel_plane(plane);
193 : struct intel_plane_state *intel_state =
194 0 : to_intel_plane_state(plane->state);
195 :
196 0 : intel_plane->commit_plane(plane, intel_state);
197 0 : }
198 :
199 : const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
200 : .prepare_fb = intel_prepare_plane_fb,
201 : .cleanup_fb = intel_cleanup_plane_fb,
202 : .atomic_check = intel_plane_atomic_check,
203 : .atomic_update = intel_plane_atomic_update,
204 : };
205 :
206 : /**
207 : * intel_plane_atomic_get_property - fetch plane property value
208 : * @plane: plane to fetch property for
209 : * @state: state containing the property value
210 : * @property: property to look up
211 : * @val: pointer to write property value into
212 : *
213 : * The DRM core does not store shadow copies of properties for
214 : * atomic-capable drivers. This entrypoint is used to fetch
215 : * the current value of a driver-specific plane property.
216 : */
217 : int
218 0 : intel_plane_atomic_get_property(struct drm_plane *plane,
219 : const struct drm_plane_state *state,
220 : struct drm_property *property,
221 : uint64_t *val)
222 : {
223 : DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
224 0 : return -EINVAL;
225 : }
226 :
227 : /**
228 : * intel_plane_atomic_set_property - set plane property value
229 : * @plane: plane to set property for
230 : * @state: state to update property value in
231 : * @property: property to set
232 : * @val: value to set property to
233 : *
234 : * Writes the specified property value for a plane into the provided atomic
235 : * state object.
236 : *
237 : * Returns 0 on success, -EINVAL on unrecognized properties
238 : */
239 : int
240 0 : intel_plane_atomic_set_property(struct drm_plane *plane,
241 : struct drm_plane_state *state,
242 : struct drm_property *property,
243 : uint64_t val)
244 : {
245 : DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name);
246 0 : return -EINVAL;
247 : }
|
