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