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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 * Author: CK Hu <ck.hu@mediatek.com>
5 */
6
7#include <drm/drm_atomic.h>
8#include <drm/drm_atomic_helper.h>
9#include <drm/drm_fourcc.h>
10#include <drm/drm_plane_helper.h>
11#include <drm/drm_gem_framebuffer_helper.h>
12
13#include "mtk_drm_crtc.h"
14#include "mtk_drm_ddp_comp.h"
15#include "mtk_drm_drv.h"
16#include "mtk_drm_fb.h"
17#include "mtk_drm_gem.h"
18#include "mtk_drm_plane.h"
19
20static const u32 formats[] = {
21 DRM_FORMAT_XRGB8888,
22 DRM_FORMAT_ARGB8888,
23 DRM_FORMAT_RGB565,
24 DRM_FORMAT_UYVY,
25 DRM_FORMAT_YUYV,
26};
27
28static void mtk_plane_reset(struct drm_plane *plane)
29{
30 struct mtk_plane_state *state;
31
32 if (plane->state) {
33 __drm_atomic_helper_plane_destroy_state(plane->state);
34
35 state = to_mtk_plane_state(plane->state);
36 memset(state, 0, sizeof(*state));
37 } else {
38 state = kzalloc(sizeof(*state), GFP_KERNEL);
39 if (!state)
40 return;
41 plane->state = &state->base;
42 }
43
44 state->base.plane = plane;
45 state->pending.format = DRM_FORMAT_RGB565;
46}
47
48static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
49{
50 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
51 struct mtk_plane_state *state;
52
53 state = kzalloc(sizeof(*state), GFP_KERNEL);
54 if (!state)
55 return NULL;
56
57 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
58
59 WARN_ON(state->base.plane != plane);
60
61 state->pending = old_state->pending;
62
63 return &state->base;
64}
65
66static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
67 struct drm_plane_state *state)
68{
69 __drm_atomic_helper_plane_destroy_state(state);
70 kfree(to_mtk_plane_state(state));
71}
72
73static const struct drm_plane_funcs mtk_plane_funcs = {
74 .update_plane = drm_atomic_helper_update_plane,
75 .disable_plane = drm_atomic_helper_disable_plane,
76 .destroy = drm_plane_cleanup,
77 .reset = mtk_plane_reset,
78 .atomic_duplicate_state = mtk_plane_duplicate_state,
79 .atomic_destroy_state = mtk_drm_plane_destroy_state,
80};
81
82static int mtk_plane_atomic_check(struct drm_plane *plane,
83 struct drm_plane_state *state)
84{
85 struct drm_framebuffer *fb = state->fb;
86 struct drm_crtc_state *crtc_state;
87
88 if (!fb)
89 return 0;
90
91 if (!state->crtc)
92 return 0;
93
94 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
95 if (IS_ERR(crtc_state))
96 return PTR_ERR(crtc_state);
97
98 return drm_atomic_helper_check_plane_state(state, crtc_state,
99 DRM_PLANE_HELPER_NO_SCALING,
100 DRM_PLANE_HELPER_NO_SCALING,
101 true, true);
102}
103
104static void mtk_plane_atomic_update(struct drm_plane *plane,
105 struct drm_plane_state *old_state)
106{
107 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
108 struct drm_crtc *crtc = plane->state->crtc;
109 struct drm_framebuffer *fb = plane->state->fb;
110 struct drm_gem_object *gem;
111 struct mtk_drm_gem_obj *mtk_gem;
112 unsigned int pitch, format;
113 dma_addr_t addr;
114
115 if (!crtc || WARN_ON(!fb))
116 return;
117
118 gem = fb->obj[0];
119 mtk_gem = to_mtk_gem_obj(gem);
120 addr = mtk_gem->dma_addr;
121 pitch = fb->pitches[0];
122 format = fb->format->format;
123
124 addr += (plane->state->src.x1 >> 16) * fb->format->cpp[0];
125 addr += (plane->state->src.y1 >> 16) * pitch;
126
127 state->pending.enable = true;
128 state->pending.pitch = pitch;
129 state->pending.format = format;
130 state->pending.addr = addr;
131 state->pending.x = plane->state->dst.x1;
132 state->pending.y = plane->state->dst.y1;
133 state->pending.width = drm_rect_width(&plane->state->dst);
134 state->pending.height = drm_rect_height(&plane->state->dst);
135 wmb(); /* Make sure the above parameters are set before update */
136 state->pending.dirty = true;
137}
138
139static void mtk_plane_atomic_disable(struct drm_plane *plane,
140 struct drm_plane_state *old_state)
141{
142 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
143
144 state->pending.enable = false;
145 wmb(); /* Make sure the above parameter is set before update */
146 state->pending.dirty = true;
147}
148
149static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
150 .prepare_fb = drm_gem_fb_prepare_fb,
151 .atomic_check = mtk_plane_atomic_check,
152 .atomic_update = mtk_plane_atomic_update,
153 .atomic_disable = mtk_plane_atomic_disable,
154};
155
156int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
157 unsigned long possible_crtcs, enum drm_plane_type type)
158{
159 int err;
160
161 err = drm_universal_plane_init(dev, plane, possible_crtcs,
162 &mtk_plane_funcs, formats,
163 ARRAY_SIZE(formats), NULL, type, NULL);
164 if (err) {
165 DRM_ERROR("failed to initialize plane\n");
166 return err;
167 }
168
169 drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
170
171 return 0;
172}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 * Author: CK Hu <ck.hu@mediatek.com>
5 */
6
7#include <drm/drm_atomic.h>
8#include <drm/drm_atomic_helper.h>
9#include <drm/drm_fourcc.h>
10#include <drm/drm_atomic_uapi.h>
11#include <drm/drm_plane_helper.h>
12#include <drm/drm_gem_framebuffer_helper.h>
13
14#include "mtk_drm_crtc.h"
15#include "mtk_drm_ddp_comp.h"
16#include "mtk_drm_drv.h"
17#include "mtk_drm_gem.h"
18#include "mtk_drm_plane.h"
19
20static const u32 formats[] = {
21 DRM_FORMAT_XRGB8888,
22 DRM_FORMAT_ARGB8888,
23 DRM_FORMAT_BGRX8888,
24 DRM_FORMAT_BGRA8888,
25 DRM_FORMAT_ABGR8888,
26 DRM_FORMAT_XBGR8888,
27 DRM_FORMAT_RGB888,
28 DRM_FORMAT_BGR888,
29 DRM_FORMAT_RGB565,
30 DRM_FORMAT_UYVY,
31 DRM_FORMAT_YUYV,
32};
33
34static void mtk_plane_reset(struct drm_plane *plane)
35{
36 struct mtk_plane_state *state;
37
38 if (plane->state) {
39 __drm_atomic_helper_plane_destroy_state(plane->state);
40
41 state = to_mtk_plane_state(plane->state);
42 memset(state, 0, sizeof(*state));
43 } else {
44 state = kzalloc(sizeof(*state), GFP_KERNEL);
45 if (!state)
46 return;
47 plane->state = &state->base;
48 }
49
50 state->base.plane = plane;
51 state->pending.format = DRM_FORMAT_RGB565;
52}
53
54static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
55{
56 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
57 struct mtk_plane_state *state;
58
59 state = kzalloc(sizeof(*state), GFP_KERNEL);
60 if (!state)
61 return NULL;
62
63 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
64
65 WARN_ON(state->base.plane != plane);
66
67 state->pending = old_state->pending;
68
69 return &state->base;
70}
71
72static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
73 struct drm_plane_state *state)
74{
75 __drm_atomic_helper_plane_destroy_state(state);
76 kfree(to_mtk_plane_state(state));
77}
78
79static int mtk_plane_atomic_async_check(struct drm_plane *plane,
80 struct drm_plane_state *state)
81{
82 struct drm_crtc_state *crtc_state;
83 int ret;
84
85 if (plane != state->crtc->cursor)
86 return -EINVAL;
87
88 if (!plane->state)
89 return -EINVAL;
90
91 if (!plane->state->fb)
92 return -EINVAL;
93
94 ret = mtk_drm_crtc_plane_check(state->crtc, plane,
95 to_mtk_plane_state(state));
96 if (ret)
97 return ret;
98
99 if (state->state)
100 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
101 state->crtc);
102 else /* Special case for asynchronous cursor updates. */
103 crtc_state = state->crtc->state;
104
105 return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
106 DRM_PLANE_HELPER_NO_SCALING,
107 DRM_PLANE_HELPER_NO_SCALING,
108 true, true);
109}
110
111static void mtk_plane_atomic_async_update(struct drm_plane *plane,
112 struct drm_plane_state *new_state)
113{
114 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
115
116 plane->state->crtc_x = new_state->crtc_x;
117 plane->state->crtc_y = new_state->crtc_y;
118 plane->state->crtc_h = new_state->crtc_h;
119 plane->state->crtc_w = new_state->crtc_w;
120 plane->state->src_x = new_state->src_x;
121 plane->state->src_y = new_state->src_y;
122 plane->state->src_h = new_state->src_h;
123 plane->state->src_w = new_state->src_w;
124 swap(plane->state->fb, new_state->fb);
125 state->pending.async_dirty = true;
126
127 mtk_drm_crtc_async_update(new_state->crtc, plane, new_state);
128}
129
130static const struct drm_plane_funcs mtk_plane_funcs = {
131 .update_plane = drm_atomic_helper_update_plane,
132 .disable_plane = drm_atomic_helper_disable_plane,
133 .destroy = drm_plane_cleanup,
134 .reset = mtk_plane_reset,
135 .atomic_duplicate_state = mtk_plane_duplicate_state,
136 .atomic_destroy_state = mtk_drm_plane_destroy_state,
137};
138
139static int mtk_plane_atomic_check(struct drm_plane *plane,
140 struct drm_plane_state *state)
141{
142 struct drm_framebuffer *fb = state->fb;
143 struct drm_crtc_state *crtc_state;
144 int ret;
145
146 if (!fb)
147 return 0;
148
149 if (WARN_ON(!state->crtc))
150 return 0;
151
152 ret = mtk_drm_crtc_plane_check(state->crtc, plane,
153 to_mtk_plane_state(state));
154 if (ret)
155 return ret;
156
157 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
158 if (IS_ERR(crtc_state))
159 return PTR_ERR(crtc_state);
160
161 return drm_atomic_helper_check_plane_state(state, crtc_state,
162 DRM_PLANE_HELPER_NO_SCALING,
163 DRM_PLANE_HELPER_NO_SCALING,
164 true, true);
165}
166
167static void mtk_plane_atomic_disable(struct drm_plane *plane,
168 struct drm_plane_state *old_state)
169{
170 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
171
172 state->pending.enable = false;
173 wmb(); /* Make sure the above parameter is set before update */
174 state->pending.dirty = true;
175}
176
177static void mtk_plane_atomic_update(struct drm_plane *plane,
178 struct drm_plane_state *old_state)
179{
180 struct mtk_plane_state *state = to_mtk_plane_state(plane->state);
181 struct drm_crtc *crtc = plane->state->crtc;
182 struct drm_framebuffer *fb = plane->state->fb;
183 struct drm_gem_object *gem;
184 struct mtk_drm_gem_obj *mtk_gem;
185 unsigned int pitch, format;
186 dma_addr_t addr;
187
188 if (!crtc || WARN_ON(!fb))
189 return;
190
191 if (!plane->state->visible) {
192 mtk_plane_atomic_disable(plane, old_state);
193 return;
194 }
195
196 gem = fb->obj[0];
197 mtk_gem = to_mtk_gem_obj(gem);
198 addr = mtk_gem->dma_addr;
199 pitch = fb->pitches[0];
200 format = fb->format->format;
201
202 addr += (plane->state->src.x1 >> 16) * fb->format->cpp[0];
203 addr += (plane->state->src.y1 >> 16) * pitch;
204
205 state->pending.enable = true;
206 state->pending.pitch = pitch;
207 state->pending.format = format;
208 state->pending.addr = addr;
209 state->pending.x = plane->state->dst.x1;
210 state->pending.y = plane->state->dst.y1;
211 state->pending.width = drm_rect_width(&plane->state->dst);
212 state->pending.height = drm_rect_height(&plane->state->dst);
213 state->pending.rotation = plane->state->rotation;
214 wmb(); /* Make sure the above parameters are set before update */
215 state->pending.dirty = true;
216}
217
218static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
219 .prepare_fb = drm_gem_fb_prepare_fb,
220 .atomic_check = mtk_plane_atomic_check,
221 .atomic_update = mtk_plane_atomic_update,
222 .atomic_disable = mtk_plane_atomic_disable,
223 .atomic_async_update = mtk_plane_atomic_async_update,
224 .atomic_async_check = mtk_plane_atomic_async_check,
225};
226
227int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
228 unsigned long possible_crtcs, enum drm_plane_type type,
229 unsigned int supported_rotations)
230{
231 int err;
232
233 err = drm_universal_plane_init(dev, plane, possible_crtcs,
234 &mtk_plane_funcs, formats,
235 ARRAY_SIZE(formats), NULL, type, NULL);
236 if (err) {
237 DRM_ERROR("failed to initialize plane\n");
238 return err;
239 }
240
241 if (supported_rotations & ~DRM_MODE_ROTATE_0) {
242 err = drm_plane_create_rotation_property(plane,
243 DRM_MODE_ROTATE_0,
244 supported_rotations);
245 if (err)
246 DRM_INFO("Create rotation property failed\n");
247 }
248
249 drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
250
251 return 0;
252}