1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright 2019 NXP.
4 */
5
6 #include <drm/drm_atomic.h>
7 #include <drm/drm_atomic_helper.h>
8 #include <drm/drm_fb_cma_helper.h>
9 #include <drm/drm_gem_framebuffer_helper.h>
10 #include <drm/drm_gem_cma_helper.h>
11
12 #include "dcss-dev.h"
13 #include "dcss-kms.h"
14
15 static const u32 dcss_common_formats[] = {
16 /* RGB */
17 DRM_FORMAT_ARGB8888,
18 DRM_FORMAT_XRGB8888,
19 DRM_FORMAT_ABGR8888,
20 DRM_FORMAT_XBGR8888,
21 DRM_FORMAT_RGBA8888,
22 DRM_FORMAT_RGBX8888,
23 DRM_FORMAT_BGRA8888,
24 DRM_FORMAT_BGRX8888,
25 DRM_FORMAT_XRGB2101010,
26 DRM_FORMAT_XBGR2101010,
27 DRM_FORMAT_RGBX1010102,
28 DRM_FORMAT_BGRX1010102,
29 DRM_FORMAT_ARGB2101010,
30 DRM_FORMAT_ABGR2101010,
31 DRM_FORMAT_RGBA1010102,
32 DRM_FORMAT_BGRA1010102,
33 };
34
35 static const u64 dcss_video_format_modifiers[] = {
36 DRM_FORMAT_MOD_LINEAR,
37 DRM_FORMAT_MOD_INVALID,
38 };
39
40 static const u64 dcss_graphics_format_modifiers[] = {
41 DRM_FORMAT_MOD_VIVANTE_TILED,
42 DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
43 DRM_FORMAT_MOD_LINEAR,
44 DRM_FORMAT_MOD_INVALID,
45 };
46
to_dcss_plane(struct drm_plane * p)47 static inline struct dcss_plane *to_dcss_plane(struct drm_plane *p)
48 {
49 return container_of(p, struct dcss_plane, base);
50 }
51
dcss_plane_fb_is_linear(const struct drm_framebuffer * fb)52 static inline bool dcss_plane_fb_is_linear(const struct drm_framebuffer *fb)
53 {
54 return ((fb->flags & DRM_MODE_FB_MODIFIERS) == 0) ||
55 ((fb->flags & DRM_MODE_FB_MODIFIERS) != 0 &&
56 fb->modifier == DRM_FORMAT_MOD_LINEAR);
57 }
58
dcss_plane_destroy(struct drm_plane * plane)59 static void dcss_plane_destroy(struct drm_plane *plane)
60 {
61 struct dcss_plane *dcss_plane = container_of(plane, struct dcss_plane,
62 base);
63
64 drm_plane_cleanup(plane);
65 kfree(dcss_plane);
66 }
67
dcss_plane_format_mod_supported(struct drm_plane * plane,u32 format,u64 modifier)68 static bool dcss_plane_format_mod_supported(struct drm_plane *plane,
69 u32 format,
70 u64 modifier)
71 {
72 switch (plane->type) {
73 case DRM_PLANE_TYPE_PRIMARY:
74 switch (format) {
75 case DRM_FORMAT_ARGB8888:
76 case DRM_FORMAT_XRGB8888:
77 case DRM_FORMAT_ARGB2101010:
78 return modifier == DRM_FORMAT_MOD_LINEAR ||
79 modifier == DRM_FORMAT_MOD_VIVANTE_TILED ||
80 modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED;
81 default:
82 return modifier == DRM_FORMAT_MOD_LINEAR;
83 }
84 break;
85 case DRM_PLANE_TYPE_OVERLAY:
86 return modifier == DRM_FORMAT_MOD_LINEAR;
87 default:
88 return false;
89 }
90 }
91
92 static const struct drm_plane_funcs dcss_plane_funcs = {
93 .update_plane = drm_atomic_helper_update_plane,
94 .disable_plane = drm_atomic_helper_disable_plane,
95 .destroy = dcss_plane_destroy,
96 .reset = drm_atomic_helper_plane_reset,
97 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
98 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
99 .format_mod_supported = dcss_plane_format_mod_supported,
100 };
101
dcss_plane_can_rotate(const struct drm_format_info * format,bool mod_present,u64 modifier,unsigned int rotation)102 static bool dcss_plane_can_rotate(const struct drm_format_info *format,
103 bool mod_present, u64 modifier,
104 unsigned int rotation)
105 {
106 bool linear_format = !mod_present ||
107 (mod_present && modifier == DRM_FORMAT_MOD_LINEAR);
108 u32 supported_rotation = DRM_MODE_ROTATE_0;
109
110 if (!format->is_yuv && linear_format)
111 supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
112 DRM_MODE_REFLECT_MASK;
113 else if (!format->is_yuv &&
114 modifier == DRM_FORMAT_MOD_VIVANTE_TILED)
115 supported_rotation = DRM_MODE_ROTATE_MASK |
116 DRM_MODE_REFLECT_MASK;
117 else if (format->is_yuv && linear_format &&
118 (format->format == DRM_FORMAT_NV12 ||
119 format->format == DRM_FORMAT_NV21))
120 supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
121 DRM_MODE_REFLECT_MASK;
122
123 return !!(rotation & supported_rotation);
124 }
125
dcss_plane_is_source_size_allowed(u16 src_w,u16 src_h,u32 pix_fmt)126 static bool dcss_plane_is_source_size_allowed(u16 src_w, u16 src_h, u32 pix_fmt)
127 {
128 if (src_w < 64 &&
129 (pix_fmt == DRM_FORMAT_NV12 || pix_fmt == DRM_FORMAT_NV21))
130 return false;
131 else if (src_w < 32 &&
132 (pix_fmt == DRM_FORMAT_UYVY || pix_fmt == DRM_FORMAT_VYUY ||
133 pix_fmt == DRM_FORMAT_YUYV || pix_fmt == DRM_FORMAT_YVYU))
134 return false;
135
136 return src_w >= 16 && src_h >= 8;
137 }
138
dcss_plane_atomic_check(struct drm_plane * plane,struct drm_plane_state * state)139 static int dcss_plane_atomic_check(struct drm_plane *plane,
140 struct drm_plane_state *state)
141 {
142 struct dcss_plane *dcss_plane = to_dcss_plane(plane);
143 struct dcss_dev *dcss = plane->dev->dev_private;
144 struct drm_framebuffer *fb = state->fb;
145 bool is_primary_plane = plane->type == DRM_PLANE_TYPE_PRIMARY;
146 struct drm_gem_cma_object *cma_obj;
147 struct drm_crtc_state *crtc_state;
148 int hdisplay, vdisplay;
149 int min, max;
150 int ret;
151
152 if (!fb || !state->crtc)
153 return 0;
154
155 cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
156 WARN_ON(!cma_obj);
157
158 crtc_state = drm_atomic_get_existing_crtc_state(state->state,
159 state->crtc);
160
161 hdisplay = crtc_state->adjusted_mode.hdisplay;
162 vdisplay = crtc_state->adjusted_mode.vdisplay;
163
164 if (!dcss_plane_is_source_size_allowed(state->src_w >> 16,
165 state->src_h >> 16,
166 fb->format->format)) {
167 DRM_DEBUG_KMS("Source plane size is not allowed!\n");
168 return -EINVAL;
169 }
170
171 dcss_scaler_get_min_max_ratios(dcss->scaler, dcss_plane->ch_num,
172 &min, &max);
173
174 ret = drm_atomic_helper_check_plane_state(state, crtc_state,
175 min, max, !is_primary_plane,
176 false);
177 if (ret)
178 return ret;
179
180 if (!state->visible)
181 return 0;
182
183 if (!dcss_plane_can_rotate(fb->format,
184 !!(fb->flags & DRM_MODE_FB_MODIFIERS),
185 fb->modifier,
186 state->rotation)) {
187 DRM_DEBUG_KMS("requested rotation is not allowed!\n");
188 return -EINVAL;
189 }
190
191 if ((state->crtc_x < 0 || state->crtc_y < 0 ||
192 state->crtc_x + state->crtc_w > hdisplay ||
193 state->crtc_y + state->crtc_h > vdisplay) &&
194 !dcss_plane_fb_is_linear(fb)) {
195 DRM_DEBUG_KMS("requested cropping operation is not allowed!\n");
196 return -EINVAL;
197 }
198
199 if ((fb->flags & DRM_MODE_FB_MODIFIERS) &&
200 !plane->funcs->format_mod_supported(plane,
201 fb->format->format,
202 fb->modifier)) {
203 DRM_DEBUG_KMS("Invalid modifier: %llx", fb->modifier);
204 return -EINVAL;
205 }
206
207 return 0;
208 }
209
dcss_plane_atomic_set_base(struct dcss_plane * dcss_plane)210 static void dcss_plane_atomic_set_base(struct dcss_plane *dcss_plane)
211 {
212 struct drm_plane *plane = &dcss_plane->base;
213 struct drm_plane_state *state = plane->state;
214 struct dcss_dev *dcss = plane->dev->dev_private;
215 struct drm_framebuffer *fb = state->fb;
216 const struct drm_format_info *format = fb->format;
217 struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
218 unsigned long p1_ba = 0, p2_ba = 0;
219
220 if (!format->is_yuv ||
221 format->format == DRM_FORMAT_NV12 ||
222 format->format == DRM_FORMAT_NV21)
223 p1_ba = cma_obj->paddr + fb->offsets[0] +
224 fb->pitches[0] * (state->src.y1 >> 16) +
225 format->char_per_block[0] * (state->src.x1 >> 16);
226 else if (format->format == DRM_FORMAT_UYVY ||
227 format->format == DRM_FORMAT_VYUY ||
228 format->format == DRM_FORMAT_YUYV ||
229 format->format == DRM_FORMAT_YVYU)
230 p1_ba = cma_obj->paddr + fb->offsets[0] +
231 fb->pitches[0] * (state->src.y1 >> 16) +
232 2 * format->char_per_block[0] * (state->src.x1 >> 17);
233
234 if (format->format == DRM_FORMAT_NV12 ||
235 format->format == DRM_FORMAT_NV21)
236 p2_ba = cma_obj->paddr + fb->offsets[1] +
237 (((fb->pitches[1] >> 1) * (state->src.y1 >> 17) +
238 (state->src.x1 >> 17)) << 1);
239
240 dcss_dpr_addr_set(dcss->dpr, dcss_plane->ch_num, p1_ba, p2_ba,
241 fb->pitches[0]);
242 }
243
dcss_plane_needs_setup(struct drm_plane_state * state,struct drm_plane_state * old_state)244 static bool dcss_plane_needs_setup(struct drm_plane_state *state,
245 struct drm_plane_state *old_state)
246 {
247 struct drm_framebuffer *fb = state->fb;
248 struct drm_framebuffer *old_fb = old_state->fb;
249
250 return state->crtc_x != old_state->crtc_x ||
251 state->crtc_y != old_state->crtc_y ||
252 state->crtc_w != old_state->crtc_w ||
253 state->crtc_h != old_state->crtc_h ||
254 state->src_x != old_state->src_x ||
255 state->src_y != old_state->src_y ||
256 state->src_w != old_state->src_w ||
257 state->src_h != old_state->src_h ||
258 fb->format->format != old_fb->format->format ||
259 fb->modifier != old_fb->modifier ||
260 state->rotation != old_state->rotation;
261 }
262
dcss_plane_atomic_update(struct drm_plane * plane,struct drm_plane_state * old_state)263 static void dcss_plane_atomic_update(struct drm_plane *plane,
264 struct drm_plane_state *old_state)
265 {
266 struct drm_plane_state *state = plane->state;
267 struct dcss_plane *dcss_plane = to_dcss_plane(plane);
268 struct dcss_dev *dcss = plane->dev->dev_private;
269 struct drm_framebuffer *fb = state->fb;
270 u32 pixel_format;
271 struct drm_crtc_state *crtc_state;
272 bool modifiers_present;
273 u32 src_w, src_h, dst_w, dst_h;
274 struct drm_rect src, dst;
275 bool enable = true;
276
277 if (!fb || !state->crtc || !state->visible)
278 return;
279
280 pixel_format = state->fb->format->format;
281 crtc_state = state->crtc->state;
282 modifiers_present = !!(fb->flags & DRM_MODE_FB_MODIFIERS);
283
284 if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state) &&
285 !dcss_plane_needs_setup(state, old_state)) {
286 dcss_plane_atomic_set_base(dcss_plane);
287 return;
288 }
289
290 src = plane->state->src;
291 dst = plane->state->dst;
292
293 /*
294 * The width and height after clipping.
295 */
296 src_w = drm_rect_width(&src) >> 16;
297 src_h = drm_rect_height(&src) >> 16;
298 dst_w = drm_rect_width(&dst);
299 dst_h = drm_rect_height(&dst);
300
301 if (plane->type == DRM_PLANE_TYPE_OVERLAY &&
302 modifiers_present && fb->modifier == DRM_FORMAT_MOD_LINEAR)
303 modifiers_present = false;
304
305 dcss_dpr_format_set(dcss->dpr, dcss_plane->ch_num, state->fb->format,
306 modifiers_present ? fb->modifier :
307 DRM_FORMAT_MOD_LINEAR);
308 dcss_dpr_set_res(dcss->dpr, dcss_plane->ch_num, src_w, src_h);
309 dcss_dpr_set_rotation(dcss->dpr, dcss_plane->ch_num,
310 state->rotation);
311
312 dcss_plane_atomic_set_base(dcss_plane);
313
314 dcss_scaler_setup(dcss->scaler, dcss_plane->ch_num,
315 state->fb->format, src_w, src_h,
316 dst_w, dst_h,
317 drm_mode_vrefresh(&crtc_state->mode));
318
319 dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
320 dst.x1, dst.y1, dst_w, dst_h);
321 dcss_dtg_plane_alpha_set(dcss->dtg, dcss_plane->ch_num,
322 fb->format, state->alpha >> 8);
323
324 if (!dcss_plane->ch_num && (state->alpha >> 8) == 0)
325 enable = false;
326
327 dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, enable);
328 dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, enable);
329
330 if (!enable)
331 dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
332 0, 0, 0, 0);
333
334 dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, enable);
335 }
336
dcss_plane_atomic_disable(struct drm_plane * plane,struct drm_plane_state * old_state)337 static void dcss_plane_atomic_disable(struct drm_plane *plane,
338 struct drm_plane_state *old_state)
339 {
340 struct dcss_plane *dcss_plane = to_dcss_plane(plane);
341 struct dcss_dev *dcss = plane->dev->dev_private;
342
343 dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, false);
344 dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, false);
345 dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num, 0, 0, 0, 0);
346 dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, false);
347 }
348
349 static const struct drm_plane_helper_funcs dcss_plane_helper_funcs = {
350 .prepare_fb = drm_gem_fb_prepare_fb,
351 .atomic_check = dcss_plane_atomic_check,
352 .atomic_update = dcss_plane_atomic_update,
353 .atomic_disable = dcss_plane_atomic_disable,
354 };
355
dcss_plane_init(struct drm_device * drm,unsigned int possible_crtcs,enum drm_plane_type type,unsigned int zpos)356 struct dcss_plane *dcss_plane_init(struct drm_device *drm,
357 unsigned int possible_crtcs,
358 enum drm_plane_type type,
359 unsigned int zpos)
360 {
361 struct dcss_plane *dcss_plane;
362 const u64 *format_modifiers = dcss_video_format_modifiers;
363 int ret;
364
365 if (zpos > 2)
366 return ERR_PTR(-EINVAL);
367
368 dcss_plane = kzalloc(sizeof(*dcss_plane), GFP_KERNEL);
369 if (!dcss_plane) {
370 DRM_ERROR("failed to allocate plane\n");
371 return ERR_PTR(-ENOMEM);
372 }
373
374 if (type == DRM_PLANE_TYPE_PRIMARY)
375 format_modifiers = dcss_graphics_format_modifiers;
376
377 ret = drm_universal_plane_init(drm, &dcss_plane->base, possible_crtcs,
378 &dcss_plane_funcs, dcss_common_formats,
379 ARRAY_SIZE(dcss_common_formats),
380 format_modifiers, type, NULL);
381 if (ret) {
382 DRM_ERROR("failed to initialize plane\n");
383 kfree(dcss_plane);
384 return ERR_PTR(ret);
385 }
386
387 drm_plane_helper_add(&dcss_plane->base, &dcss_plane_helper_funcs);
388
389 ret = drm_plane_create_zpos_immutable_property(&dcss_plane->base, zpos);
390 if (ret)
391 return ERR_PTR(ret);
392
393 drm_plane_create_rotation_property(&dcss_plane->base,
394 DRM_MODE_ROTATE_0,
395 DRM_MODE_ROTATE_0 |
396 DRM_MODE_ROTATE_90 |
397 DRM_MODE_ROTATE_180 |
398 DRM_MODE_ROTATE_270 |
399 DRM_MODE_REFLECT_X |
400 DRM_MODE_REFLECT_Y);
401
402 dcss_plane->ch_num = zpos;
403
404 return dcss_plane;
405 }
406