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_atomic_uapi.h>
10 #include <drm/drm_blend.h>
11 #include <drm/drm_fourcc.h>
12 #include <drm/drm_framebuffer.h>
13 #include <drm/drm_gem_atomic_helper.h>
14 #include <linux/align.h>
15
16 #include "mtk_drm_crtc.h"
17 #include "mtk_drm_ddp_comp.h"
18 #include "mtk_drm_drv.h"
19 #include "mtk_drm_gem.h"
20 #include "mtk_drm_plane.h"
21
22 static const u64 modifiers[] = {
23 DRM_FORMAT_MOD_LINEAR,
24 DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
25 AFBC_FORMAT_MOD_SPLIT |
26 AFBC_FORMAT_MOD_SPARSE),
27 DRM_FORMAT_MOD_INVALID,
28 };
29
mtk_plane_reset(struct drm_plane * plane)30 static void mtk_plane_reset(struct drm_plane *plane)
31 {
32 struct mtk_plane_state *state;
33
34 if (plane->state) {
35 __drm_atomic_helper_plane_destroy_state(plane->state);
36
37 state = to_mtk_plane_state(plane->state);
38 memset(state, 0, sizeof(*state));
39 } else {
40 state = kzalloc(sizeof(*state), GFP_KERNEL);
41 if (!state)
42 return;
43 }
44
45 __drm_atomic_helper_plane_reset(plane, &state->base);
46
47 state->base.plane = plane;
48 state->pending.format = DRM_FORMAT_RGB565;
49 state->pending.modifier = DRM_FORMAT_MOD_LINEAR;
50 }
51
mtk_plane_duplicate_state(struct drm_plane * plane)52 static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane)
53 {
54 struct mtk_plane_state *old_state = to_mtk_plane_state(plane->state);
55 struct mtk_plane_state *state;
56
57 state = kmalloc(sizeof(*state), GFP_KERNEL);
58 if (!state)
59 return NULL;
60
61 __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
62
63 WARN_ON(state->base.plane != plane);
64
65 state->pending = old_state->pending;
66
67 return &state->base;
68 }
69
mtk_plane_format_mod_supported(struct drm_plane * plane,uint32_t format,uint64_t modifier)70 static bool mtk_plane_format_mod_supported(struct drm_plane *plane,
71 uint32_t format,
72 uint64_t modifier)
73 {
74 if (modifier == DRM_FORMAT_MOD_LINEAR)
75 return true;
76
77 if (modifier != DRM_FORMAT_MOD_ARM_AFBC(
78 AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 |
79 AFBC_FORMAT_MOD_SPLIT |
80 AFBC_FORMAT_MOD_SPARSE))
81 return false;
82
83 if (format != DRM_FORMAT_XRGB8888 &&
84 format != DRM_FORMAT_ARGB8888 &&
85 format != DRM_FORMAT_BGRX8888 &&
86 format != DRM_FORMAT_BGRA8888 &&
87 format != DRM_FORMAT_ABGR8888 &&
88 format != DRM_FORMAT_XBGR8888 &&
89 format != DRM_FORMAT_RGB888 &&
90 format != DRM_FORMAT_BGR888)
91 return false;
92
93 return true;
94 }
95
mtk_drm_plane_destroy_state(struct drm_plane * plane,struct drm_plane_state * state)96 static void mtk_drm_plane_destroy_state(struct drm_plane *plane,
97 struct drm_plane_state *state)
98 {
99 __drm_atomic_helper_plane_destroy_state(state);
100 kfree(to_mtk_plane_state(state));
101 }
102
mtk_plane_atomic_async_check(struct drm_plane * plane,struct drm_atomic_state * state)103 static int mtk_plane_atomic_async_check(struct drm_plane *plane,
104 struct drm_atomic_state *state)
105 {
106 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
107 plane);
108 struct drm_crtc_state *crtc_state;
109 int ret;
110
111 if (plane != new_plane_state->crtc->cursor)
112 return -EINVAL;
113
114 if (!plane->state)
115 return -EINVAL;
116
117 if (!plane->state->fb)
118 return -EINVAL;
119
120 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane,
121 to_mtk_plane_state(new_plane_state));
122 if (ret)
123 return ret;
124
125 crtc_state = drm_atomic_get_existing_crtc_state(state, new_plane_state->crtc);
126
127 return drm_atomic_helper_check_plane_state(plane->state, crtc_state,
128 DRM_PLANE_NO_SCALING,
129 DRM_PLANE_NO_SCALING,
130 true, true);
131 }
132
mtk_plane_update_new_state(struct drm_plane_state * new_state,struct mtk_plane_state * mtk_plane_state)133 static void mtk_plane_update_new_state(struct drm_plane_state *new_state,
134 struct mtk_plane_state *mtk_plane_state)
135 {
136 struct drm_framebuffer *fb = new_state->fb;
137 struct drm_gem_object *gem;
138 struct mtk_drm_gem_obj *mtk_gem;
139 unsigned int pitch, format;
140 u64 modifier;
141 dma_addr_t addr;
142 dma_addr_t hdr_addr = 0;
143 unsigned int hdr_pitch = 0;
144
145 gem = fb->obj[0];
146 mtk_gem = to_mtk_gem_obj(gem);
147 addr = mtk_gem->dma_addr;
148 pitch = fb->pitches[0];
149 format = fb->format->format;
150 modifier = fb->modifier;
151
152 if (modifier == DRM_FORMAT_MOD_LINEAR) {
153 addr += (new_state->src.x1 >> 16) * fb->format->cpp[0];
154 addr += (new_state->src.y1 >> 16) * pitch;
155 } else {
156 int width_in_blocks = ALIGN(fb->width, AFBC_DATA_BLOCK_WIDTH)
157 / AFBC_DATA_BLOCK_WIDTH;
158 int height_in_blocks = ALIGN(fb->height, AFBC_DATA_BLOCK_HEIGHT)
159 / AFBC_DATA_BLOCK_HEIGHT;
160 int x_offset_in_blocks = (new_state->src.x1 >> 16) / AFBC_DATA_BLOCK_WIDTH;
161 int y_offset_in_blocks = (new_state->src.y1 >> 16) / AFBC_DATA_BLOCK_HEIGHT;
162 int hdr_size;
163
164 hdr_pitch = width_in_blocks * AFBC_HEADER_BLOCK_SIZE;
165 pitch = width_in_blocks * AFBC_DATA_BLOCK_WIDTH *
166 AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0];
167
168 hdr_size = ALIGN(hdr_pitch * height_in_blocks, AFBC_HEADER_ALIGNMENT);
169
170 hdr_addr = addr + hdr_pitch * y_offset_in_blocks +
171 AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks;
172 /* The data plane is offset by 1 additional block. */
173 addr = addr + hdr_size +
174 pitch * y_offset_in_blocks +
175 AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT *
176 fb->format->cpp[0] * (x_offset_in_blocks + 1);
177 }
178
179 mtk_plane_state->pending.enable = true;
180 mtk_plane_state->pending.pitch = pitch;
181 mtk_plane_state->pending.hdr_pitch = hdr_pitch;
182 mtk_plane_state->pending.format = format;
183 mtk_plane_state->pending.modifier = modifier;
184 mtk_plane_state->pending.addr = addr;
185 mtk_plane_state->pending.hdr_addr = hdr_addr;
186 mtk_plane_state->pending.x = new_state->dst.x1;
187 mtk_plane_state->pending.y = new_state->dst.y1;
188 mtk_plane_state->pending.width = drm_rect_width(&new_state->dst);
189 mtk_plane_state->pending.height = drm_rect_height(&new_state->dst);
190 mtk_plane_state->pending.rotation = new_state->rotation;
191 mtk_plane_state->pending.color_encoding = new_state->color_encoding;
192 }
193
mtk_plane_atomic_async_update(struct drm_plane * plane,struct drm_atomic_state * state)194 static void mtk_plane_atomic_async_update(struct drm_plane *plane,
195 struct drm_atomic_state *state)
196 {
197 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
198 plane);
199 struct mtk_plane_state *new_plane_state = to_mtk_plane_state(plane->state);
200
201 plane->state->crtc_x = new_state->crtc_x;
202 plane->state->crtc_y = new_state->crtc_y;
203 plane->state->crtc_h = new_state->crtc_h;
204 plane->state->crtc_w = new_state->crtc_w;
205 plane->state->src_x = new_state->src_x;
206 plane->state->src_y = new_state->src_y;
207 plane->state->src_h = new_state->src_h;
208 plane->state->src_w = new_state->src_w;
209 swap(plane->state->fb, new_state->fb);
210
211 mtk_plane_update_new_state(new_state, new_plane_state);
212 wmb(); /* Make sure the above parameters are set before update */
213 new_plane_state->pending.async_dirty = true;
214 mtk_drm_crtc_async_update(new_state->crtc, plane, state);
215 }
216
217 static const struct drm_plane_funcs mtk_plane_funcs = {
218 .update_plane = drm_atomic_helper_update_plane,
219 .disable_plane = drm_atomic_helper_disable_plane,
220 .destroy = drm_plane_cleanup,
221 .reset = mtk_plane_reset,
222 .atomic_duplicate_state = mtk_plane_duplicate_state,
223 .atomic_destroy_state = mtk_drm_plane_destroy_state,
224 .format_mod_supported = mtk_plane_format_mod_supported,
225 };
226
mtk_plane_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)227 static int mtk_plane_atomic_check(struct drm_plane *plane,
228 struct drm_atomic_state *state)
229 {
230 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
231 plane);
232 struct drm_framebuffer *fb = new_plane_state->fb;
233 struct drm_crtc_state *crtc_state;
234 int ret;
235
236 if (!fb)
237 return 0;
238
239 if (WARN_ON(!new_plane_state->crtc))
240 return 0;
241
242 ret = mtk_drm_crtc_plane_check(new_plane_state->crtc, plane,
243 to_mtk_plane_state(new_plane_state));
244 if (ret)
245 return ret;
246
247 crtc_state = drm_atomic_get_crtc_state(state,
248 new_plane_state->crtc);
249 if (IS_ERR(crtc_state))
250 return PTR_ERR(crtc_state);
251
252 return drm_atomic_helper_check_plane_state(new_plane_state,
253 crtc_state,
254 DRM_PLANE_NO_SCALING,
255 DRM_PLANE_NO_SCALING,
256 true, true);
257 }
258
mtk_plane_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)259 static void mtk_plane_atomic_disable(struct drm_plane *plane,
260 struct drm_atomic_state *state)
261 {
262 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
263 plane);
264 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state);
265 mtk_plane_state->pending.enable = false;
266 wmb(); /* Make sure the above parameter is set before update */
267 mtk_plane_state->pending.dirty = true;
268 }
269
mtk_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)270 static void mtk_plane_atomic_update(struct drm_plane *plane,
271 struct drm_atomic_state *state)
272 {
273 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
274 plane);
275 struct mtk_plane_state *mtk_plane_state = to_mtk_plane_state(new_state);
276
277 if (!new_state->crtc || WARN_ON(!new_state->fb))
278 return;
279
280 if (!new_state->visible) {
281 mtk_plane_atomic_disable(plane, state);
282 return;
283 }
284
285 mtk_plane_update_new_state(new_state, mtk_plane_state);
286 wmb(); /* Make sure the above parameters are set before update */
287 mtk_plane_state->pending.dirty = true;
288 }
289
290 static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = {
291 .atomic_check = mtk_plane_atomic_check,
292 .atomic_update = mtk_plane_atomic_update,
293 .atomic_disable = mtk_plane_atomic_disable,
294 .atomic_async_update = mtk_plane_atomic_async_update,
295 .atomic_async_check = mtk_plane_atomic_async_check,
296 };
297
mtk_plane_init(struct drm_device * dev,struct drm_plane * plane,unsigned long possible_crtcs,enum drm_plane_type type,unsigned int supported_rotations,const u32 * formats,size_t num_formats)298 int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
299 unsigned long possible_crtcs, enum drm_plane_type type,
300 unsigned int supported_rotations, const u32 *formats,
301 size_t num_formats)
302 {
303 int err;
304
305 if (!formats || !num_formats) {
306 DRM_ERROR("no formats for plane\n");
307 return -EINVAL;
308 }
309
310 err = drm_universal_plane_init(dev, plane, possible_crtcs,
311 &mtk_plane_funcs, formats,
312 num_formats, modifiers, type, NULL);
313 if (err) {
314 DRM_ERROR("failed to initialize plane\n");
315 return err;
316 }
317
318 if (supported_rotations & ~DRM_MODE_ROTATE_0) {
319 err = drm_plane_create_rotation_property(plane,
320 DRM_MODE_ROTATE_0,
321 supported_rotations);
322 if (err)
323 DRM_INFO("Create rotation property failed\n");
324 }
325
326 drm_plane_helper_add(plane, &mtk_plane_helper_funcs);
327
328 return 0;
329 }
330
