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10#include <drm/drm_atomic.h>
11#include <drm/drm_atomic_helper.h>
12#include <drm/drm_crtc.h>
13#include <drm/drm_fb_cma_helper.h>
14#include <drm/drm_fourcc.h>
15#include <drm/drm_gem_atomic_helper.h>
16#include <drm/drm_gem_cma_helper.h>
17#include <drm/drm_managed.h>
18#include <drm/drm_plane_helper.h>
19#include <drm/drm_vblank.h>
20
21#include <linux/bitops.h>
22#include <linux/dma-mapping.h>
23#include <linux/of_platform.h>
24#include <linux/scatterlist.h>
25#include <linux/slab.h>
26#include <linux/videodev2.h>
27
28#include <media/vsp1.h>
29
30#include "rcar_du_drv.h"
31#include "rcar_du_kms.h"
32#include "rcar_du_vsp.h"
33#include "rcar_du_writeback.h"
34
35static void rcar_du_vsp_complete(void *private, unsigned int status, u32 crc)
36{
37 struct rcar_du_crtc *crtc = private;
38
39 if (crtc->vblank_enable)
40 drm_crtc_handle_vblank(&crtc->crtc);
41
42 if (status & VSP1_DU_STATUS_COMPLETE)
43 rcar_du_crtc_finish_page_flip(crtc);
44 if (status & VSP1_DU_STATUS_WRITEBACK)
45 rcar_du_writeback_complete(crtc);
46
47 drm_crtc_add_crc_entry(&crtc->crtc, false, 0, &crc);
48}
49
50void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
51{
52 const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode;
53 struct rcar_du_device *rcdu = crtc->dev;
54 struct vsp1_du_lif_config cfg = {
55 .width = mode->hdisplay,
56 .height = mode->vdisplay,
57 .interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE,
58 .callback = rcar_du_vsp_complete,
59 .callback_data = crtc,
60 };
61 struct rcar_du_plane_state state = {
62 .state = {
63 .alpha = DRM_BLEND_ALPHA_OPAQUE,
64 .crtc = &crtc->crtc,
65 .dst.x1 = 0,
66 .dst.y1 = 0,
67 .dst.x2 = mode->hdisplay,
68 .dst.y2 = mode->vdisplay,
69 .src.x1 = 0,
70 .src.y1 = 0,
71 .src.x2 = mode->hdisplay << 16,
72 .src.y2 = mode->vdisplay << 16,
73 .zpos = 0,
74 },
75 .format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
76 .source = RCAR_DU_PLANE_VSPD1,
77 .colorkey = 0,
78 };
79
80 if (rcdu->info->gen >= 3)
81 state.hwindex = (crtc->index % 2) ? 2 : 0;
82 else
83 state.hwindex = crtc->index % 2;
84
85 __rcar_du_plane_setup(crtc->group, &state);
86
87
88
89
90
91
92
93
94 crtc->group->need_restart = true;
95
96 vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
97}
98
99void rcar_du_vsp_disable(struct rcar_du_crtc *crtc)
100{
101 vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, NULL);
102}
103
104void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc)
105{
106 vsp1_du_atomic_begin(crtc->vsp->vsp, crtc->vsp_pipe);
107}
108
109void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc)
110{
111 struct vsp1_du_atomic_pipe_config cfg = { { 0, } };
112 struct rcar_du_crtc_state *state;
113
114 state = to_rcar_crtc_state(crtc->crtc.state);
115 cfg.crc = state->crc;
116
117 rcar_du_writeback_setup(crtc, &cfg.writeback);
118
119 vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
120}
121
122static const u32 rcar_du_vsp_formats[] = {
123 DRM_FORMAT_RGB332,
124 DRM_FORMAT_ARGB4444,
125 DRM_FORMAT_XRGB4444,
126 DRM_FORMAT_ARGB1555,
127 DRM_FORMAT_XRGB1555,
128 DRM_FORMAT_RGB565,
129 DRM_FORMAT_BGR888,
130 DRM_FORMAT_RGB888,
131 DRM_FORMAT_BGRA8888,
132 DRM_FORMAT_BGRX8888,
133 DRM_FORMAT_ARGB8888,
134 DRM_FORMAT_XRGB8888,
135 DRM_FORMAT_UYVY,
136 DRM_FORMAT_YUYV,
137 DRM_FORMAT_YVYU,
138 DRM_FORMAT_NV12,
139 DRM_FORMAT_NV21,
140 DRM_FORMAT_NV16,
141 DRM_FORMAT_NV61,
142 DRM_FORMAT_YUV420,
143 DRM_FORMAT_YVU420,
144 DRM_FORMAT_YUV422,
145 DRM_FORMAT_YVU422,
146 DRM_FORMAT_YUV444,
147 DRM_FORMAT_YVU444,
148};
149
150static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
151{
152 struct rcar_du_vsp_plane_state *state =
153 to_rcar_vsp_plane_state(plane->plane.state);
154 struct rcar_du_crtc *crtc = to_rcar_crtc(state->state.crtc);
155 struct drm_framebuffer *fb = plane->plane.state->fb;
156 const struct rcar_du_format_info *format;
157 struct vsp1_du_atomic_config cfg = {
158 .pixelformat = 0,
159 .pitch = fb->pitches[0],
160 .alpha = state->state.alpha >> 8,
161 .zpos = state->state.zpos,
162 };
163 unsigned int i;
164
165 cfg.src.left = state->state.src.x1 >> 16;
166 cfg.src.top = state->state.src.y1 >> 16;
167 cfg.src.width = drm_rect_width(&state->state.src) >> 16;
168 cfg.src.height = drm_rect_height(&state->state.src) >> 16;
169
170 cfg.dst.left = state->state.dst.x1;
171 cfg.dst.top = state->state.dst.y1;
172 cfg.dst.width = drm_rect_width(&state->state.dst);
173 cfg.dst.height = drm_rect_height(&state->state.dst);
174
175 for (i = 0; i < state->format->planes; ++i)
176 cfg.mem[i] = sg_dma_address(state->sg_tables[i].sgl)
177 + fb->offsets[i];
178
179 format = rcar_du_format_info(state->format->fourcc);
180 cfg.pixelformat = format->v4l2;
181
182 vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe,
183 plane->index, &cfg);
184}
185
186int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
187 struct sg_table sg_tables[3])
188{
189 struct rcar_du_device *rcdu = vsp->dev;
190 unsigned int i, j;
191 int ret;
192
193 for (i = 0; i < fb->format->num_planes; ++i) {
194 struct drm_gem_cma_object *gem = drm_fb_cma_get_gem_obj(fb, i);
195 struct sg_table *sgt = &sg_tables[i];
196
197 if (gem->sgt) {
198 struct scatterlist *src;
199 struct scatterlist *dst;
200
201
202
203
204
205
206
207
208 ret = sg_alloc_table(sgt, gem->sgt->orig_nents,
209 GFP_KERNEL);
210 if (ret)
211 goto fail;
212
213 src = gem->sgt->sgl;
214 dst = sgt->sgl;
215 for (j = 0; j < gem->sgt->orig_nents; ++j) {
216 sg_set_page(dst, sg_page(src), src->length,
217 src->offset);
218 src = sg_next(src);
219 dst = sg_next(dst);
220 }
221 } else {
222 ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr,
223 gem->paddr, gem->base.size);
224 if (ret)
225 goto fail;
226 }
227
228 ret = vsp1_du_map_sg(vsp->vsp, sgt);
229 if (ret) {
230 sg_free_table(sgt);
231 goto fail;
232 }
233 }
234
235 return 0;
236
237fail:
238 while (i--) {
239 struct sg_table *sgt = &sg_tables[i];
240
241 vsp1_du_unmap_sg(vsp->vsp, sgt);
242 sg_free_table(sgt);
243 }
244
245 return ret;
246}
247
248static int rcar_du_vsp_plane_prepare_fb(struct drm_plane *plane,
249 struct drm_plane_state *state)
250{
251 struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
252 struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp;
253 int ret;
254
255
256
257
258
259 if (!state->visible)
260 return 0;
261
262 ret = rcar_du_vsp_map_fb(vsp, state->fb, rstate->sg_tables);
263 if (ret < 0)
264 return ret;
265
266 return drm_gem_plane_helper_prepare_fb(plane, state);
267}
268
269void rcar_du_vsp_unmap_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
270 struct sg_table sg_tables[3])
271{
272 unsigned int i;
273
274 for (i = 0; i < fb->format->num_planes; ++i) {
275 struct sg_table *sgt = &sg_tables[i];
276
277 vsp1_du_unmap_sg(vsp->vsp, sgt);
278 sg_free_table(sgt);
279 }
280}
281
282static void rcar_du_vsp_plane_cleanup_fb(struct drm_plane *plane,
283 struct drm_plane_state *state)
284{
285 struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
286 struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp;
287
288 if (!state->visible)
289 return;
290
291 rcar_du_vsp_unmap_fb(vsp, state->fb, rstate->sg_tables);
292}
293
294static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane,
295 struct drm_atomic_state *state)
296{
297 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
298 plane);
299 struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(new_plane_state);
300
301 return __rcar_du_plane_atomic_check(plane, new_plane_state,
302 &rstate->format);
303}
304
305static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane,
306 struct drm_atomic_state *state)
307{
308 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
309 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
310 struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane);
311 struct rcar_du_crtc *crtc = to_rcar_crtc(old_state->crtc);
312
313 if (new_state->visible)
314 rcar_du_vsp_plane_setup(rplane);
315 else if (old_state->crtc)
316 vsp1_du_atomic_update(rplane->vsp->vsp, crtc->vsp_pipe,
317 rplane->index, NULL);
318}
319
320static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = {
321 .prepare_fb = rcar_du_vsp_plane_prepare_fb,
322 .cleanup_fb = rcar_du_vsp_plane_cleanup_fb,
323 .atomic_check = rcar_du_vsp_plane_atomic_check,
324 .atomic_update = rcar_du_vsp_plane_atomic_update,
325};
326
327static struct drm_plane_state *
328rcar_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane)
329{
330 struct rcar_du_vsp_plane_state *copy;
331
332 if (WARN_ON(!plane->state))
333 return NULL;
334
335 copy = kzalloc(sizeof(*copy), GFP_KERNEL);
336 if (copy == NULL)
337 return NULL;
338
339 __drm_atomic_helper_plane_duplicate_state(plane, ©->state);
340
341 return ©->state;
342}
343
344static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane,
345 struct drm_plane_state *state)
346{
347 __drm_atomic_helper_plane_destroy_state(state);
348 kfree(to_rcar_vsp_plane_state(state));
349}
350
351static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
352{
353 struct rcar_du_vsp_plane_state *state;
354
355 if (plane->state) {
356 rcar_du_vsp_plane_atomic_destroy_state(plane, plane->state);
357 plane->state = NULL;
358 }
359
360 state = kzalloc(sizeof(*state), GFP_KERNEL);
361 if (state == NULL)
362 return;
363
364 __drm_atomic_helper_plane_reset(plane, &state->state);
365 state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
366}
367
368static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
369 .update_plane = drm_atomic_helper_update_plane,
370 .disable_plane = drm_atomic_helper_disable_plane,
371 .reset = rcar_du_vsp_plane_reset,
372 .destroy = drm_plane_cleanup,
373 .atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state,
374 .atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state,
375};
376
377static void rcar_du_vsp_cleanup(struct drm_device *dev, void *res)
378{
379 struct rcar_du_vsp *vsp = res;
380 unsigned int i;
381
382 for (i = 0; i < vsp->num_planes; ++i) {
383 struct rcar_du_vsp_plane *plane = &vsp->planes[i];
384
385 drm_plane_cleanup(&plane->plane);
386 }
387
388 kfree(vsp->planes);
389
390 put_device(vsp->vsp);
391}
392
393int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
394 unsigned int crtcs)
395{
396 struct rcar_du_device *rcdu = vsp->dev;
397 struct platform_device *pdev;
398 unsigned int num_crtcs = hweight32(crtcs);
399 unsigned int num_planes;
400 unsigned int i;
401 int ret;
402
403
404 pdev = of_find_device_by_node(np);
405 if (!pdev)
406 return -ENXIO;
407
408 vsp->vsp = &pdev->dev;
409
410 ret = drmm_add_action_or_reset(&rcdu->ddev, rcar_du_vsp_cleanup, vsp);
411 if (ret < 0)
412 return ret;
413
414 ret = vsp1_du_init(vsp->vsp);
415 if (ret < 0)
416 return ret;
417
418
419
420
421
422 num_planes = rcdu->info->gen >= 3 ? 5 : 4;
423
424 vsp->planes = kcalloc(num_planes, sizeof(*vsp->planes), GFP_KERNEL);
425 if (!vsp->planes)
426 return -ENOMEM;
427
428 for (i = 0; i < num_planes; ++i) {
429 enum drm_plane_type type = i < num_crtcs
430 ? DRM_PLANE_TYPE_PRIMARY
431 : DRM_PLANE_TYPE_OVERLAY;
432 struct rcar_du_vsp_plane *plane = &vsp->planes[i];
433
434 plane->vsp = vsp;
435 plane->index = i;
436
437 ret = drm_universal_plane_init(&rcdu->ddev, &plane->plane,
438 crtcs, &rcar_du_vsp_plane_funcs,
439 rcar_du_vsp_formats,
440 ARRAY_SIZE(rcar_du_vsp_formats),
441 NULL, type, NULL);
442 if (ret < 0)
443 return ret;
444
445 drm_plane_helper_add(&plane->plane,
446 &rcar_du_vsp_plane_helper_funcs);
447
448 if (type == DRM_PLANE_TYPE_PRIMARY) {
449 drm_plane_create_zpos_immutable_property(&plane->plane,
450 0);
451 } else {
452 drm_plane_create_alpha_property(&plane->plane);
453 drm_plane_create_zpos_property(&plane->plane, 1, 1,
454 num_planes - 1);
455 }
456
457 vsp->num_planes++;
458 }
459
460 return 0;
461}
462
