Loading...
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2014 Free Electrons
4 * Copyright (C) 2014 Atmel
5 *
6 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
7 */
8
9#include <linux/dmapool.h>
10#include <linux/mfd/atmel-hlcdc.h>
11
12#include <drm/drm_atomic.h>
13#include <drm/drm_atomic_helper.h>
14#include <drm/drm_blend.h>
15#include <drm/drm_fb_dma_helper.h>
16#include <drm/drm_fourcc.h>
17#include <drm/drm_framebuffer.h>
18#include <drm/drm_gem_dma_helper.h>
19
20#include "atmel_hlcdc_dc.h"
21
22/**
23 * struct atmel_hlcdc_plane_state - Atmel HLCDC Plane state structure.
24 *
25 * @base: DRM plane state
26 * @crtc_x: x position of the plane relative to the CRTC
27 * @crtc_y: y position of the plane relative to the CRTC
28 * @crtc_w: visible width of the plane
29 * @crtc_h: visible height of the plane
30 * @src_x: x buffer position
31 * @src_y: y buffer position
32 * @src_w: buffer width
33 * @src_h: buffer height
34 * @disc_x: x discard position
35 * @disc_y: y discard position
36 * @disc_w: discard width
37 * @disc_h: discard height
38 * @ahb_id: AHB identification number
39 * @bpp: bytes per pixel deduced from pixel_format
40 * @offsets: offsets to apply to the GEM buffers
41 * @xstride: value to add to the pixel pointer between each line
42 * @pstride: value to add to the pixel pointer between each pixel
43 * @nplanes: number of planes (deduced from pixel_format)
44 * @dscrs: DMA descriptors
45 */
46struct atmel_hlcdc_plane_state {
47 struct drm_plane_state base;
48 int crtc_x;
49 int crtc_y;
50 unsigned int crtc_w;
51 unsigned int crtc_h;
52 uint32_t src_x;
53 uint32_t src_y;
54 uint32_t src_w;
55 uint32_t src_h;
56
57 int disc_x;
58 int disc_y;
59 int disc_w;
60 int disc_h;
61
62 int ahb_id;
63
64 /* These fields are private and should not be touched */
65 int bpp[ATMEL_HLCDC_LAYER_MAX_PLANES];
66 unsigned int offsets[ATMEL_HLCDC_LAYER_MAX_PLANES];
67 int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
68 int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
69 int nplanes;
70
71 /* DMA descriptors. */
72 struct atmel_hlcdc_dma_channel_dscr *dscrs[ATMEL_HLCDC_LAYER_MAX_PLANES];
73};
74
75static inline struct atmel_hlcdc_plane_state *
76drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s)
77{
78 return container_of(s, struct atmel_hlcdc_plane_state, base);
79}
80
81#define SUBPIXEL_MASK 0xffff
82
83static uint32_t rgb_formats[] = {
84 DRM_FORMAT_C8,
85 DRM_FORMAT_XRGB4444,
86 DRM_FORMAT_ARGB4444,
87 DRM_FORMAT_RGBA4444,
88 DRM_FORMAT_ARGB1555,
89 DRM_FORMAT_RGB565,
90 DRM_FORMAT_RGB888,
91 DRM_FORMAT_XRGB8888,
92 DRM_FORMAT_ARGB8888,
93 DRM_FORMAT_RGBA8888,
94};
95
96struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = {
97 .formats = rgb_formats,
98 .nformats = ARRAY_SIZE(rgb_formats),
99};
100
101static uint32_t rgb_and_yuv_formats[] = {
102 DRM_FORMAT_C8,
103 DRM_FORMAT_XRGB4444,
104 DRM_FORMAT_ARGB4444,
105 DRM_FORMAT_RGBA4444,
106 DRM_FORMAT_ARGB1555,
107 DRM_FORMAT_RGB565,
108 DRM_FORMAT_RGB888,
109 DRM_FORMAT_XRGB8888,
110 DRM_FORMAT_ARGB8888,
111 DRM_FORMAT_RGBA8888,
112 DRM_FORMAT_AYUV,
113 DRM_FORMAT_YUYV,
114 DRM_FORMAT_UYVY,
115 DRM_FORMAT_YVYU,
116 DRM_FORMAT_VYUY,
117 DRM_FORMAT_NV21,
118 DRM_FORMAT_NV61,
119 DRM_FORMAT_YUV422,
120 DRM_FORMAT_YUV420,
121};
122
123struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = {
124 .formats = rgb_and_yuv_formats,
125 .nformats = ARRAY_SIZE(rgb_and_yuv_formats),
126};
127
128static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode)
129{
130 switch (format) {
131 case DRM_FORMAT_C8:
132 *mode = ATMEL_HLCDC_C8_MODE;
133 break;
134 case DRM_FORMAT_XRGB4444:
135 *mode = ATMEL_HLCDC_XRGB4444_MODE;
136 break;
137 case DRM_FORMAT_ARGB4444:
138 *mode = ATMEL_HLCDC_ARGB4444_MODE;
139 break;
140 case DRM_FORMAT_RGBA4444:
141 *mode = ATMEL_HLCDC_RGBA4444_MODE;
142 break;
143 case DRM_FORMAT_RGB565:
144 *mode = ATMEL_HLCDC_RGB565_MODE;
145 break;
146 case DRM_FORMAT_RGB888:
147 *mode = ATMEL_HLCDC_RGB888_MODE;
148 break;
149 case DRM_FORMAT_ARGB1555:
150 *mode = ATMEL_HLCDC_ARGB1555_MODE;
151 break;
152 case DRM_FORMAT_XRGB8888:
153 *mode = ATMEL_HLCDC_XRGB8888_MODE;
154 break;
155 case DRM_FORMAT_ARGB8888:
156 *mode = ATMEL_HLCDC_ARGB8888_MODE;
157 break;
158 case DRM_FORMAT_RGBA8888:
159 *mode = ATMEL_HLCDC_RGBA8888_MODE;
160 break;
161 case DRM_FORMAT_AYUV:
162 *mode = ATMEL_HLCDC_AYUV_MODE;
163 break;
164 case DRM_FORMAT_YUYV:
165 *mode = ATMEL_HLCDC_YUYV_MODE;
166 break;
167 case DRM_FORMAT_UYVY:
168 *mode = ATMEL_HLCDC_UYVY_MODE;
169 break;
170 case DRM_FORMAT_YVYU:
171 *mode = ATMEL_HLCDC_YVYU_MODE;
172 break;
173 case DRM_FORMAT_VYUY:
174 *mode = ATMEL_HLCDC_VYUY_MODE;
175 break;
176 case DRM_FORMAT_NV21:
177 *mode = ATMEL_HLCDC_NV21_MODE;
178 break;
179 case DRM_FORMAT_NV61:
180 *mode = ATMEL_HLCDC_NV61_MODE;
181 break;
182 case DRM_FORMAT_YUV420:
183 *mode = ATMEL_HLCDC_YUV420_MODE;
184 break;
185 case DRM_FORMAT_YUV422:
186 *mode = ATMEL_HLCDC_YUV422_MODE;
187 break;
188 default:
189 return -ENOTSUPP;
190 }
191
192 return 0;
193}
194
195static u32 heo_downscaling_xcoef[] = {
196 0x11343311,
197 0x000000f7,
198 0x1635300c,
199 0x000000f9,
200 0x1b362c08,
201 0x000000fb,
202 0x1f372804,
203 0x000000fe,
204 0x24382400,
205 0x00000000,
206 0x28371ffe,
207 0x00000004,
208 0x2c361bfb,
209 0x00000008,
210 0x303516f9,
211 0x0000000c,
212};
213
214static u32 heo_downscaling_ycoef[] = {
215 0x00123737,
216 0x00173732,
217 0x001b382d,
218 0x001f3928,
219 0x00243824,
220 0x0028391f,
221 0x002d381b,
222 0x00323717,
223};
224
225static u32 heo_upscaling_xcoef[] = {
226 0xf74949f7,
227 0x00000000,
228 0xf55f33fb,
229 0x000000fe,
230 0xf5701efe,
231 0x000000ff,
232 0xf87c0dff,
233 0x00000000,
234 0x00800000,
235 0x00000000,
236 0x0d7cf800,
237 0x000000ff,
238 0x1e70f5ff,
239 0x000000fe,
240 0x335ff5fe,
241 0x000000fb,
242};
243
244static u32 heo_upscaling_ycoef[] = {
245 0x00004040,
246 0x00075920,
247 0x00056f0c,
248 0x00027b03,
249 0x00008000,
250 0x00037b02,
251 0x000c6f05,
252 0x00205907,
253};
254
255#define ATMEL_HLCDC_XPHIDEF 4
256#define ATMEL_HLCDC_YPHIDEF 4
257
258static u32 atmel_hlcdc_plane_phiscaler_get_factor(u32 srcsize,
259 u32 dstsize,
260 u32 phidef)
261{
262 u32 factor, max_memsize;
263
264 factor = (256 * ((8 * (srcsize - 1)) - phidef)) / (dstsize - 1);
265 max_memsize = ((factor * (dstsize - 1)) + (256 * phidef)) / 2048;
266
267 if (max_memsize > srcsize - 1)
268 factor--;
269
270 return factor;
271}
272
273static void
274atmel_hlcdc_plane_scaler_set_phicoeff(struct atmel_hlcdc_plane *plane,
275 const u32 *coeff_tab, int size,
276 unsigned int cfg_offs)
277{
278 int i;
279
280 for (i = 0; i < size; i++)
281 atmel_hlcdc_layer_write_cfg(&plane->layer, cfg_offs + i,
282 coeff_tab[i]);
283}
284
285static
286void atmel_hlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane,
287 struct atmel_hlcdc_plane_state *state)
288{
289 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
290 u32 xfactor, yfactor;
291
292 if (!desc->layout.scaler_config)
293 return;
294
295 if (state->crtc_w == state->src_w && state->crtc_h == state->src_h) {
296 atmel_hlcdc_layer_write_cfg(&plane->layer,
297 desc->layout.scaler_config, 0);
298 return;
299 }
300
301 if (desc->layout.phicoeffs.x) {
302 xfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_w,
303 state->crtc_w,
304 ATMEL_HLCDC_XPHIDEF);
305
306 yfactor = atmel_hlcdc_plane_phiscaler_get_factor(state->src_h,
307 state->crtc_h,
308 ATMEL_HLCDC_YPHIDEF);
309
310 atmel_hlcdc_plane_scaler_set_phicoeff(plane,
311 state->crtc_w < state->src_w ?
312 heo_downscaling_xcoef :
313 heo_upscaling_xcoef,
314 ARRAY_SIZE(heo_upscaling_xcoef),
315 desc->layout.phicoeffs.x);
316
317 atmel_hlcdc_plane_scaler_set_phicoeff(plane,
318 state->crtc_h < state->src_h ?
319 heo_downscaling_ycoef :
320 heo_upscaling_ycoef,
321 ARRAY_SIZE(heo_upscaling_ycoef),
322 desc->layout.phicoeffs.y);
323 } else {
324 xfactor = (1024 * state->src_w) / state->crtc_w;
325 yfactor = (1024 * state->src_h) / state->crtc_h;
326 }
327
328 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config,
329 ATMEL_HLCDC_LAYER_SCALER_ENABLE |
330 ATMEL_HLCDC_LAYER_SCALER_FACTORS(xfactor,
331 yfactor));
332}
333
334static
335void atmel_xlcdc_plane_setup_scaler(struct atmel_hlcdc_plane *plane,
336 struct atmel_hlcdc_plane_state *state)
337{
338 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
339 u32 xfactor, yfactor;
340
341 if (!desc->layout.scaler_config)
342 return;
343
344 if (state->crtc_w == state->src_w && state->crtc_h == state->src_h) {
345 atmel_hlcdc_layer_write_cfg(&plane->layer,
346 desc->layout.scaler_config, 0);
347 return;
348 }
349
350 /* xfactor = round[(2^20 * XMEMSIZE)/XSIZE)] */
351 xfactor = (u32)(((1 << 20) * state->src_w) / state->crtc_w);
352
353 /* yfactor = round[(2^20 * YMEMSIZE)/YSIZE)] */
354 yfactor = (u32)(((1 << 20) * state->src_h) / state->crtc_h);
355
356 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config,
357 ATMEL_XLCDC_LAYER_VSCALER_LUMA_ENABLE |
358 ATMEL_XLCDC_LAYER_VSCALER_CHROMA_ENABLE |
359 ATMEL_XLCDC_LAYER_HSCALER_LUMA_ENABLE |
360 ATMEL_XLCDC_LAYER_HSCALER_CHROMA_ENABLE);
361
362 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config + 1,
363 yfactor);
364 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config + 3,
365 xfactor);
366
367 /*
368 * With YCbCr 4:2:2 and YCbYcr 4:2:0 window resampling, configuration
369 * register LCDC_HEOCFG25.VXSCFACT and LCDC_HEOCFG27.HXSCFACT is half
370 * the value of yfactor and xfactor.
371 */
372 if (state->base.fb->format->format == DRM_FORMAT_YUV420) {
373 yfactor /= 2;
374 xfactor /= 2;
375 }
376
377 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config + 2,
378 yfactor);
379 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.scaler_config + 4,
380 xfactor);
381}
382
383static void
384atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
385 struct atmel_hlcdc_plane_state *state)
386{
387 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
388 struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
389
390 if (desc->layout.size)
391 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.size,
392 ATMEL_HLCDC_LAYER_SIZE(state->crtc_w,
393 state->crtc_h));
394
395 if (desc->layout.memsize)
396 atmel_hlcdc_layer_write_cfg(&plane->layer,
397 desc->layout.memsize,
398 ATMEL_HLCDC_LAYER_SIZE(state->src_w,
399 state->src_h));
400
401 if (desc->layout.pos)
402 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.pos,
403 ATMEL_HLCDC_LAYER_POS(state->crtc_x,
404 state->crtc_y));
405
406 dc->desc->ops->plane_setup_scaler(plane, state);
407}
408
409static
410void atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
411 struct atmel_hlcdc_plane_state *state)
412{
413 unsigned int cfg = ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 | state->ahb_id;
414 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
415 const struct drm_format_info *format = state->base.fb->format;
416
417 /*
418 * Rotation optimization is not working on RGB888 (rotation is still
419 * working but without any optimization).
420 */
421 if (format->format == DRM_FORMAT_RGB888)
422 cfg |= ATMEL_HLCDC_LAYER_DMA_ROTDIS;
423
424 atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_HLCDC_LAYER_DMA_CFG,
425 cfg);
426
427 cfg = ATMEL_HLCDC_LAYER_DMA | ATMEL_HLCDC_LAYER_REP;
428
429 if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
430 cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
431 ATMEL_HLCDC_LAYER_ITER;
432
433 if (format->has_alpha)
434 cfg |= ATMEL_HLCDC_LAYER_LAEN;
435 else
436 cfg |= ATMEL_HLCDC_LAYER_GAEN |
437 ATMEL_HLCDC_LAYER_GA(state->base.alpha);
438 }
439
440 if (state->disc_h && state->disc_w)
441 cfg |= ATMEL_HLCDC_LAYER_DISCEN;
442
443 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.general_config,
444 cfg);
445}
446
447static
448void atmel_xlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
449 struct atmel_hlcdc_plane_state *state)
450{
451 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
452 const struct drm_format_info *format = state->base.fb->format;
453 unsigned int cfg;
454
455 atmel_hlcdc_layer_write_cfg(&plane->layer, ATMEL_XLCDC_LAYER_DMA_CFG,
456 ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 | state->ahb_id);
457
458 cfg = ATMEL_XLCDC_LAYER_DMA | ATMEL_XLCDC_LAYER_REP;
459
460 if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
461 /*
462 * Alpha Blending bits specific to SAM9X7 SoC
463 */
464 cfg |= ATMEL_XLCDC_LAYER_SFACTC_A0_MULT_AS |
465 ATMEL_XLCDC_LAYER_SFACTA_ONE |
466 ATMEL_XLCDC_LAYER_DFACTC_M_A0_MULT_AS |
467 ATMEL_XLCDC_LAYER_DFACTA_ONE;
468 if (format->has_alpha)
469 cfg |= ATMEL_XLCDC_LAYER_A0(0xff);
470 else
471 cfg |= ATMEL_XLCDC_LAYER_A0(state->base.alpha);
472 }
473
474 if (state->disc_h && state->disc_w)
475 cfg |= ATMEL_XLCDC_LAYER_DISCEN;
476
477 atmel_hlcdc_layer_write_cfg(&plane->layer, desc->layout.general_config,
478 cfg);
479}
480
481static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane,
482 struct atmel_hlcdc_plane_state *state)
483{
484 u32 cfg;
485 int ret;
486
487 ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->format->format,
488 &cfg);
489 if (ret)
490 return;
491
492 if ((state->base.fb->format->format == DRM_FORMAT_YUV422 ||
493 state->base.fb->format->format == DRM_FORMAT_NV61) &&
494 drm_rotation_90_or_270(state->base.rotation))
495 cfg |= ATMEL_HLCDC_YUV422ROT;
496
497 atmel_hlcdc_layer_write_cfg(&plane->layer,
498 ATMEL_HLCDC_LAYER_FORMAT_CFG, cfg);
499}
500
501static void atmel_hlcdc_plane_update_clut(struct atmel_hlcdc_plane *plane,
502 struct atmel_hlcdc_plane_state *state)
503{
504 struct drm_crtc *crtc = state->base.crtc;
505 struct drm_color_lut *lut;
506 int idx;
507
508 if (!crtc || !crtc->state)
509 return;
510
511 if (!crtc->state->color_mgmt_changed || !crtc->state->gamma_lut)
512 return;
513
514 lut = (struct drm_color_lut *)crtc->state->gamma_lut->data;
515
516 for (idx = 0; idx < ATMEL_HLCDC_CLUT_SIZE; idx++, lut++) {
517 u32 val = ((lut->red << 8) & 0xff0000) |
518 (lut->green & 0xff00) |
519 (lut->blue >> 8);
520
521 atmel_hlcdc_layer_write_clut(&plane->layer, idx, val);
522 }
523}
524
525static void atmel_hlcdc_update_buffers(struct atmel_hlcdc_plane *plane,
526 struct atmel_hlcdc_plane_state *state,
527 u32 sr, int i)
528{
529 atmel_hlcdc_layer_write_reg(&plane->layer,
530 ATMEL_HLCDC_LAYER_PLANE_HEAD(i),
531 state->dscrs[i]->self);
532
533 if (sr & ATMEL_HLCDC_LAYER_EN)
534 return;
535
536 atmel_hlcdc_layer_write_reg(&plane->layer,
537 ATMEL_HLCDC_LAYER_PLANE_ADDR(i),
538 state->dscrs[i]->addr);
539 atmel_hlcdc_layer_write_reg(&plane->layer,
540 ATMEL_HLCDC_LAYER_PLANE_CTRL(i),
541 state->dscrs[i]->ctrl);
542 atmel_hlcdc_layer_write_reg(&plane->layer,
543 ATMEL_HLCDC_LAYER_PLANE_NEXT(i),
544 state->dscrs[i]->self);
545}
546
547static void atmel_xlcdc_update_buffers(struct atmel_hlcdc_plane *plane,
548 struct atmel_hlcdc_plane_state *state,
549 u32 sr, int i)
550{
551 atmel_hlcdc_layer_write_reg(&plane->layer,
552 ATMEL_XLCDC_LAYER_PLANE_ADDR(i),
553 state->dscrs[i]->addr);
554}
555
556static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane,
557 struct atmel_hlcdc_plane_state *state)
558{
559 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
560 struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
561 struct drm_framebuffer *fb = state->base.fb;
562 u32 sr;
563 int i;
564
565 if (!dc->desc->is_xlcdc)
566 sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR);
567
568 for (i = 0; i < state->nplanes; i++) {
569 struct drm_gem_dma_object *gem = drm_fb_dma_get_gem_obj(fb, i);
570
571 state->dscrs[i]->addr = gem->dma_addr + state->offsets[i];
572
573 dc->desc->ops->lcdc_update_buffers(plane, state, sr, i);
574
575 if (desc->layout.xstride[i])
576 atmel_hlcdc_layer_write_cfg(&plane->layer,
577 desc->layout.xstride[i],
578 state->xstride[i]);
579
580 if (desc->layout.pstride[i])
581 atmel_hlcdc_layer_write_cfg(&plane->layer,
582 desc->layout.pstride[i],
583 state->pstride[i]);
584 }
585}
586
587int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state)
588{
589 unsigned int ahb_load[2] = { };
590 struct drm_plane *plane;
591
592 drm_atomic_crtc_state_for_each_plane(plane, c_state) {
593 struct atmel_hlcdc_plane_state *plane_state;
594 struct drm_plane_state *plane_s;
595 unsigned int pixels, load = 0;
596 int i;
597
598 plane_s = drm_atomic_get_plane_state(c_state->state, plane);
599 if (IS_ERR(plane_s))
600 return PTR_ERR(plane_s);
601
602 plane_state =
603 drm_plane_state_to_atmel_hlcdc_plane_state(plane_s);
604
605 pixels = (plane_state->src_w * plane_state->src_h) -
606 (plane_state->disc_w * plane_state->disc_h);
607
608 for (i = 0; i < plane_state->nplanes; i++)
609 load += pixels * plane_state->bpp[i];
610
611 if (ahb_load[0] <= ahb_load[1])
612 plane_state->ahb_id = 0;
613 else
614 plane_state->ahb_id = 1;
615
616 ahb_load[plane_state->ahb_id] += load;
617 }
618
619 return 0;
620}
621
622int
623atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
624{
625 int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0;
626 const struct atmel_hlcdc_layer_cfg_layout *layout;
627 struct atmel_hlcdc_plane_state *primary_state;
628 struct drm_plane_state *primary_s;
629 struct atmel_hlcdc_plane *primary;
630 struct drm_plane *ovl;
631
632 primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary);
633 layout = &primary->layer.desc->layout;
634 if (!layout->disc_pos || !layout->disc_size)
635 return 0;
636
637 primary_s = drm_atomic_get_plane_state(c_state->state,
638 &primary->base);
639 if (IS_ERR(primary_s))
640 return PTR_ERR(primary_s);
641
642 primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s);
643
644 drm_atomic_crtc_state_for_each_plane(ovl, c_state) {
645 struct atmel_hlcdc_plane_state *ovl_state;
646 struct drm_plane_state *ovl_s;
647
648 if (ovl == c_state->crtc->primary)
649 continue;
650
651 ovl_s = drm_atomic_get_plane_state(c_state->state, ovl);
652 if (IS_ERR(ovl_s))
653 return PTR_ERR(ovl_s);
654
655 ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
656
657 if (!ovl_s->visible ||
658 !ovl_s->fb ||
659 ovl_s->fb->format->has_alpha ||
660 ovl_s->alpha != DRM_BLEND_ALPHA_OPAQUE)
661 continue;
662
663 /* TODO: implement a smarter hidden area detection */
664 if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w)
665 continue;
666
667 disc_x = ovl_state->crtc_x;
668 disc_y = ovl_state->crtc_y;
669 disc_h = ovl_state->crtc_h;
670 disc_w = ovl_state->crtc_w;
671 }
672
673 primary_state->disc_x = disc_x;
674 primary_state->disc_y = disc_y;
675 primary_state->disc_w = disc_w;
676 primary_state->disc_h = disc_h;
677
678 return 0;
679}
680
681static void
682atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane,
683 struct atmel_hlcdc_plane_state *state)
684{
685 const struct atmel_hlcdc_layer_cfg_layout *layout;
686
687 layout = &plane->layer.desc->layout;
688 if (!layout->disc_pos || !layout->disc_size)
689 return;
690
691 atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_pos,
692 ATMEL_HLCDC_LAYER_DISC_POS(state->disc_x,
693 state->disc_y));
694
695 atmel_hlcdc_layer_write_cfg(&plane->layer, layout->disc_size,
696 ATMEL_HLCDC_LAYER_DISC_SIZE(state->disc_w,
697 state->disc_h));
698}
699
700static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
701 struct drm_atomic_state *state)
702{
703 struct drm_plane_state *s = drm_atomic_get_new_plane_state(state, p);
704 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
705 struct atmel_hlcdc_plane_state *hstate =
706 drm_plane_state_to_atmel_hlcdc_plane_state(s);
707 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
708 struct drm_framebuffer *fb = hstate->base.fb;
709 const struct drm_display_mode *mode;
710 struct drm_crtc_state *crtc_state;
711 int ret;
712 int i;
713
714 if (!hstate->base.crtc || WARN_ON(!fb))
715 return 0;
716
717 crtc_state = drm_atomic_get_existing_crtc_state(state, s->crtc);
718 mode = &crtc_state->adjusted_mode;
719
720 ret = drm_atomic_helper_check_plane_state(s, crtc_state,
721 (1 << 16) / 2048,
722 INT_MAX, true, true);
723 if (ret || !s->visible)
724 return ret;
725
726 hstate->src_x = s->src.x1;
727 hstate->src_y = s->src.y1;
728 hstate->src_w = drm_rect_width(&s->src);
729 hstate->src_h = drm_rect_height(&s->src);
730 hstate->crtc_x = s->dst.x1;
731 hstate->crtc_y = s->dst.y1;
732 hstate->crtc_w = drm_rect_width(&s->dst);
733 hstate->crtc_h = drm_rect_height(&s->dst);
734
735 if ((hstate->src_x | hstate->src_y | hstate->src_w | hstate->src_h) &
736 SUBPIXEL_MASK)
737 return -EINVAL;
738
739 hstate->src_x >>= 16;
740 hstate->src_y >>= 16;
741 hstate->src_w >>= 16;
742 hstate->src_h >>= 16;
743
744 hstate->nplanes = fb->format->num_planes;
745 if (hstate->nplanes > ATMEL_HLCDC_LAYER_MAX_PLANES)
746 return -EINVAL;
747
748 for (i = 0; i < hstate->nplanes; i++) {
749 unsigned int offset = 0;
750 int xdiv = i ? fb->format->hsub : 1;
751 int ydiv = i ? fb->format->vsub : 1;
752
753 hstate->bpp[i] = fb->format->cpp[i];
754 if (!hstate->bpp[i])
755 return -EINVAL;
756
757 switch (hstate->base.rotation & DRM_MODE_ROTATE_MASK) {
758 case DRM_MODE_ROTATE_90:
759 offset = (hstate->src_y / ydiv) *
760 fb->pitches[i];
761 offset += ((hstate->src_x + hstate->src_w - 1) /
762 xdiv) * hstate->bpp[i];
763 hstate->xstride[i] = -(((hstate->src_h - 1) / ydiv) *
764 fb->pitches[i]) -
765 (2 * hstate->bpp[i]);
766 hstate->pstride[i] = fb->pitches[i] - hstate->bpp[i];
767 break;
768 case DRM_MODE_ROTATE_180:
769 offset = ((hstate->src_y + hstate->src_h - 1) /
770 ydiv) * fb->pitches[i];
771 offset += ((hstate->src_x + hstate->src_w - 1) /
772 xdiv) * hstate->bpp[i];
773 hstate->xstride[i] = ((((hstate->src_w - 1) / xdiv) - 1) *
774 hstate->bpp[i]) - fb->pitches[i];
775 hstate->pstride[i] = -2 * hstate->bpp[i];
776 break;
777 case DRM_MODE_ROTATE_270:
778 offset = ((hstate->src_y + hstate->src_h - 1) /
779 ydiv) * fb->pitches[i];
780 offset += (hstate->src_x / xdiv) * hstate->bpp[i];
781 hstate->xstride[i] = ((hstate->src_h - 1) / ydiv) *
782 fb->pitches[i];
783 hstate->pstride[i] = -fb->pitches[i] - hstate->bpp[i];
784 break;
785 case DRM_MODE_ROTATE_0:
786 default:
787 offset = (hstate->src_y / ydiv) * fb->pitches[i];
788 offset += (hstate->src_x / xdiv) * hstate->bpp[i];
789 hstate->xstride[i] = fb->pitches[i] -
790 ((hstate->src_w / xdiv) *
791 hstate->bpp[i]);
792 hstate->pstride[i] = 0;
793 break;
794 }
795
796 hstate->offsets[i] = offset + fb->offsets[i];
797 }
798
799 /*
800 * Swap width and size in case of 90 or 270 degrees rotation
801 */
802 if (drm_rotation_90_or_270(hstate->base.rotation)) {
803 swap(hstate->src_w, hstate->src_h);
804 }
805
806 if (!desc->layout.size &&
807 (mode->hdisplay != hstate->crtc_w ||
808 mode->vdisplay != hstate->crtc_h))
809 return -EINVAL;
810
811 if ((hstate->crtc_h != hstate->src_h || hstate->crtc_w != hstate->src_w) &&
812 (!desc->layout.memsize ||
813 hstate->base.fb->format->has_alpha))
814 return -EINVAL;
815
816 return 0;
817}
818
819static void atmel_hlcdc_atomic_disable(struct atmel_hlcdc_plane *plane)
820{
821 /* Disable interrupts */
822 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IDR,
823 0xffffffff);
824
825 /* Disable the layer */
826 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHDR,
827 ATMEL_HLCDC_LAYER_RST |
828 ATMEL_HLCDC_LAYER_A2Q |
829 ATMEL_HLCDC_LAYER_UPDATE);
830
831 /* Clear all pending interrupts */
832 atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
833}
834
835static void atmel_xlcdc_atomic_disable(struct atmel_hlcdc_plane *plane)
836{
837 /* Disable interrupts */
838 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_XLCDC_LAYER_IDR,
839 0xffffffff);
840
841 /* Disable the layer */
842 atmel_hlcdc_layer_write_reg(&plane->layer,
843 ATMEL_XLCDC_LAYER_ENR, 0);
844
845 /* Clear all pending interrupts */
846 atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_XLCDC_LAYER_ISR);
847}
848
849static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
850 struct drm_atomic_state *state)
851{
852 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
853 struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
854
855 dc->desc->ops->lcdc_atomic_disable(plane);
856}
857
858static void atmel_hlcdc_atomic_update(struct atmel_hlcdc_plane *plane,
859 struct atmel_hlcdc_dc *dc)
860{
861 u32 sr;
862
863 /* Enable the overrun interrupts. */
864 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_IER,
865 ATMEL_HLCDC_LAYER_OVR_IRQ(0) |
866 ATMEL_HLCDC_LAYER_OVR_IRQ(1) |
867 ATMEL_HLCDC_LAYER_OVR_IRQ(2));
868
869 /* Apply the new config at the next SOF event. */
870 sr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHSR);
871 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_HLCDC_LAYER_CHER,
872 ATMEL_HLCDC_LAYER_UPDATE |
873 (sr & ATMEL_HLCDC_LAYER_EN ?
874 ATMEL_HLCDC_LAYER_A2Q : ATMEL_HLCDC_LAYER_EN));
875}
876
877static void atmel_xlcdc_atomic_update(struct atmel_hlcdc_plane *plane,
878 struct atmel_hlcdc_dc *dc)
879{
880 /* Enable the overrun interrupts. */
881 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_XLCDC_LAYER_IER,
882 ATMEL_XLCDC_LAYER_OVR_IRQ(0) |
883 ATMEL_XLCDC_LAYER_OVR_IRQ(1) |
884 ATMEL_XLCDC_LAYER_OVR_IRQ(2));
885
886 atmel_hlcdc_layer_write_reg(&plane->layer, ATMEL_XLCDC_LAYER_ENR,
887 ATMEL_XLCDC_LAYER_EN);
888
889 /*
890 * Updating XLCDC_xxxCFGx, XLCDC_xxxFBA and XLCDC_xxxEN,
891 * (where xxx indicates each layer) requires writing one to the
892 * Update Attribute field for each layer in LCDC_ATTRE register for SAM9X7.
893 */
894 regmap_write(dc->hlcdc->regmap, ATMEL_XLCDC_ATTRE, ATMEL_XLCDC_BASE_UPDATE |
895 ATMEL_XLCDC_OVR1_UPDATE | ATMEL_XLCDC_OVR3_UPDATE |
896 ATMEL_XLCDC_HEO_UPDATE);
897}
898
899static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
900 struct drm_atomic_state *state)
901{
902 struct drm_plane_state *new_s = drm_atomic_get_new_plane_state(state,
903 p);
904 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
905 struct atmel_hlcdc_plane_state *hstate =
906 drm_plane_state_to_atmel_hlcdc_plane_state(new_s);
907 struct atmel_hlcdc_dc *dc = p->dev->dev_private;
908
909 if (!new_s->crtc || !new_s->fb)
910 return;
911
912 if (!hstate->base.visible) {
913 atmel_hlcdc_plane_atomic_disable(p, state);
914 return;
915 }
916
917 atmel_hlcdc_plane_update_pos_and_size(plane, hstate);
918 dc->desc->ops->lcdc_update_general_settings(plane, hstate);
919 atmel_hlcdc_plane_update_format(plane, hstate);
920 atmel_hlcdc_plane_update_clut(plane, hstate);
921 atmel_hlcdc_plane_update_buffers(plane, hstate);
922 atmel_hlcdc_plane_update_disc_area(plane, hstate);
923
924 dc->desc->ops->lcdc_atomic_update(plane, dc);
925}
926
927static void atmel_hlcdc_csc_init(struct atmel_hlcdc_plane *plane,
928 const struct atmel_hlcdc_layer_desc *desc)
929{
930 /*
931 * TODO: declare a "yuv-to-rgb-conv-factors" property to let
932 * userspace modify these factors (using a BLOB property ?).
933 */
934 static const u32 hlcdc_csc_coeffs[] = {
935 0x4c900091,
936 0x7a5f5090,
937 0x40040890
938 };
939
940 for (int i = 0; i < ARRAY_SIZE(hlcdc_csc_coeffs); i++) {
941 atmel_hlcdc_layer_write_cfg(&plane->layer,
942 desc->layout.csc + i,
943 hlcdc_csc_coeffs[i]);
944 }
945}
946
947static void atmel_xlcdc_csc_init(struct atmel_hlcdc_plane *plane,
948 const struct atmel_hlcdc_layer_desc *desc)
949{
950 /*
951 * yuv-to-rgb-conv-factors are now defined from LCDC_HEOCFG16 to
952 * LCDC_HEOCFG21 registers in SAM9X7.
953 */
954 static const u32 xlcdc_csc_coeffs[] = {
955 0x00000488,
956 0x00000648,
957 0x1EA00480,
958 0x00001D28,
959 0x08100480,
960 0x00000000,
961 0x00000007
962 };
963
964 for (int i = 0; i < ARRAY_SIZE(xlcdc_csc_coeffs); i++) {
965 atmel_hlcdc_layer_write_cfg(&plane->layer,
966 desc->layout.csc + i,
967 xlcdc_csc_coeffs[i]);
968 }
969
970 if (desc->layout.vxs_config && desc->layout.hxs_config) {
971 /*
972 * Updating vxs.config and hxs.config fixes the
973 * Green Color Issue in SAM9X7 EGT Video Player App
974 */
975 atmel_hlcdc_layer_write_cfg(&plane->layer,
976 desc->layout.vxs_config,
977 ATMEL_XLCDC_LAYER_VXSYCFG_ONE |
978 ATMEL_XLCDC_LAYER_VXSYTAP2_ENABLE |
979 ATMEL_XLCDC_LAYER_VXSCCFG_ONE |
980 ATMEL_XLCDC_LAYER_VXSCTAP2_ENABLE);
981
982 atmel_hlcdc_layer_write_cfg(&plane->layer,
983 desc->layout.hxs_config,
984 ATMEL_XLCDC_LAYER_HXSYCFG_ONE |
985 ATMEL_XLCDC_LAYER_HXSYTAP2_ENABLE |
986 ATMEL_XLCDC_LAYER_HXSCCFG_ONE |
987 ATMEL_XLCDC_LAYER_HXSCTAP2_ENABLE);
988 }
989}
990
991static int atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane)
992{
993 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
994 struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
995
996 if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
997 desc->type == ATMEL_HLCDC_CURSOR_LAYER) {
998 int ret;
999
1000 ret = drm_plane_create_alpha_property(&plane->base);
1001 if (ret)
1002 return ret;
1003 }
1004
1005 if (desc->layout.xstride[0] && desc->layout.pstride[0]) {
1006 int ret;
1007
1008 ret = drm_plane_create_rotation_property(&plane->base,
1009 DRM_MODE_ROTATE_0,
1010 DRM_MODE_ROTATE_0 |
1011 DRM_MODE_ROTATE_90 |
1012 DRM_MODE_ROTATE_180 |
1013 DRM_MODE_ROTATE_270);
1014 if (ret)
1015 return ret;
1016 }
1017
1018 if (desc->layout.csc)
1019 dc->desc->ops->lcdc_csc_init(plane, desc);
1020
1021 return 0;
1022}
1023
1024static void atmel_hlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
1025 const struct atmel_hlcdc_layer_desc *desc)
1026{
1027 u32 isr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_HLCDC_LAYER_ISR);
1028
1029 /*
1030 * There's not much we can do in case of overrun except informing
1031 * the user. However, we are in interrupt context here, hence the
1032 * use of dev_dbg().
1033 */
1034 if (isr &
1035 (ATMEL_HLCDC_LAYER_OVR_IRQ(0) | ATMEL_HLCDC_LAYER_OVR_IRQ(1) |
1036 ATMEL_HLCDC_LAYER_OVR_IRQ(2)))
1037 dev_dbg(plane->base.dev->dev, "overrun on plane %s\n",
1038 desc->name);
1039}
1040
1041static void atmel_xlcdc_irq_dbg(struct atmel_hlcdc_plane *plane,
1042 const struct atmel_hlcdc_layer_desc *desc)
1043{
1044 u32 isr = atmel_hlcdc_layer_read_reg(&plane->layer, ATMEL_XLCDC_LAYER_ISR);
1045
1046 /*
1047 * There's not much we can do in case of overrun except informing
1048 * the user. However, we are in interrupt context here, hence the
1049 * use of dev_dbg().
1050 */
1051 if (isr &
1052 (ATMEL_XLCDC_LAYER_OVR_IRQ(0) | ATMEL_XLCDC_LAYER_OVR_IRQ(1) |
1053 ATMEL_XLCDC_LAYER_OVR_IRQ(2)))
1054 dev_dbg(plane->base.dev->dev, "overrun on plane %s\n",
1055 desc->name);
1056}
1057
1058void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane)
1059{
1060 const struct atmel_hlcdc_layer_desc *desc = plane->layer.desc;
1061 struct atmel_hlcdc_dc *dc = plane->base.dev->dev_private;
1062
1063 dc->desc->ops->lcdc_irq_dbg(plane, desc);
1064}
1065
1066const struct atmel_lcdc_dc_ops atmel_hlcdc_ops = {
1067 .plane_setup_scaler = atmel_hlcdc_plane_setup_scaler,
1068 .lcdc_update_buffers = atmel_hlcdc_update_buffers,
1069 .lcdc_atomic_disable = atmel_hlcdc_atomic_disable,
1070 .lcdc_update_general_settings = atmel_hlcdc_plane_update_general_settings,
1071 .lcdc_atomic_update = atmel_hlcdc_atomic_update,
1072 .lcdc_csc_init = atmel_hlcdc_csc_init,
1073 .lcdc_irq_dbg = atmel_hlcdc_irq_dbg,
1074};
1075
1076const struct atmel_lcdc_dc_ops atmel_xlcdc_ops = {
1077 .plane_setup_scaler = atmel_xlcdc_plane_setup_scaler,
1078 .lcdc_update_buffers = atmel_xlcdc_update_buffers,
1079 .lcdc_atomic_disable = atmel_xlcdc_atomic_disable,
1080 .lcdc_update_general_settings = atmel_xlcdc_plane_update_general_settings,
1081 .lcdc_atomic_update = atmel_xlcdc_atomic_update,
1082 .lcdc_csc_init = atmel_xlcdc_csc_init,
1083 .lcdc_irq_dbg = atmel_xlcdc_irq_dbg,
1084};
1085
1086static const struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
1087 .atomic_check = atmel_hlcdc_plane_atomic_check,
1088 .atomic_update = atmel_hlcdc_plane_atomic_update,
1089 .atomic_disable = atmel_hlcdc_plane_atomic_disable,
1090};
1091
1092static int atmel_hlcdc_plane_alloc_dscrs(struct drm_plane *p,
1093 struct atmel_hlcdc_plane_state *state)
1094{
1095 struct atmel_hlcdc_dc *dc = p->dev->dev_private;
1096 int i;
1097
1098 for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) {
1099 struct atmel_hlcdc_dma_channel_dscr *dscr;
1100 dma_addr_t dscr_dma;
1101
1102 dscr = dma_pool_alloc(dc->dscrpool, GFP_KERNEL, &dscr_dma);
1103 if (!dscr)
1104 goto err;
1105
1106 dscr->addr = 0;
1107 dscr->next = dscr_dma;
1108 dscr->self = dscr_dma;
1109 dscr->ctrl = ATMEL_HLCDC_LAYER_DFETCH;
1110
1111 state->dscrs[i] = dscr;
1112 }
1113
1114 return 0;
1115
1116err:
1117 for (i--; i >= 0; i--) {
1118 dma_pool_free(dc->dscrpool, state->dscrs[i],
1119 state->dscrs[i]->self);
1120 }
1121
1122 return -ENOMEM;
1123}
1124
1125static void atmel_hlcdc_plane_reset(struct drm_plane *p)
1126{
1127 struct atmel_hlcdc_plane_state *state;
1128
1129 if (p->state) {
1130 state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
1131
1132 if (state->base.fb)
1133 drm_framebuffer_put(state->base.fb);
1134
1135 kfree(state);
1136 p->state = NULL;
1137 }
1138
1139 state = kzalloc(sizeof(*state), GFP_KERNEL);
1140 if (state) {
1141 if (atmel_hlcdc_plane_alloc_dscrs(p, state)) {
1142 kfree(state);
1143 dev_err(p->dev->dev,
1144 "Failed to allocate initial plane state\n");
1145 return;
1146 }
1147 __drm_atomic_helper_plane_reset(p, &state->base);
1148 }
1149}
1150
1151static struct drm_plane_state *
1152atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p)
1153{
1154 struct atmel_hlcdc_plane_state *state =
1155 drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
1156 struct atmel_hlcdc_plane_state *copy;
1157
1158 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
1159 if (!copy)
1160 return NULL;
1161
1162 if (atmel_hlcdc_plane_alloc_dscrs(p, copy)) {
1163 kfree(copy);
1164 return NULL;
1165 }
1166
1167 if (copy->base.fb)
1168 drm_framebuffer_get(copy->base.fb);
1169
1170 return ©->base;
1171}
1172
1173static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *p,
1174 struct drm_plane_state *s)
1175{
1176 struct atmel_hlcdc_plane_state *state =
1177 drm_plane_state_to_atmel_hlcdc_plane_state(s);
1178 struct atmel_hlcdc_dc *dc = p->dev->dev_private;
1179 int i;
1180
1181 for (i = 0; i < ARRAY_SIZE(state->dscrs); i++) {
1182 dma_pool_free(dc->dscrpool, state->dscrs[i],
1183 state->dscrs[i]->self);
1184 }
1185
1186 if (s->fb)
1187 drm_framebuffer_put(s->fb);
1188
1189 kfree(state);
1190}
1191
1192static const struct drm_plane_funcs layer_plane_funcs = {
1193 .update_plane = drm_atomic_helper_update_plane,
1194 .disable_plane = drm_atomic_helper_disable_plane,
1195 .destroy = drm_plane_cleanup,
1196 .reset = atmel_hlcdc_plane_reset,
1197 .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
1198 .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
1199};
1200
1201static int atmel_hlcdc_plane_create(struct drm_device *dev,
1202 const struct atmel_hlcdc_layer_desc *desc)
1203{
1204 struct atmel_hlcdc_dc *dc = dev->dev_private;
1205 struct atmel_hlcdc_plane *plane;
1206 enum drm_plane_type type;
1207 int ret;
1208
1209 plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL);
1210 if (!plane)
1211 return -ENOMEM;
1212
1213 atmel_hlcdc_layer_init(&plane->layer, desc, dc->hlcdc->regmap);
1214
1215 if (desc->type == ATMEL_HLCDC_BASE_LAYER)
1216 type = DRM_PLANE_TYPE_PRIMARY;
1217 else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER)
1218 type = DRM_PLANE_TYPE_CURSOR;
1219 else
1220 type = DRM_PLANE_TYPE_OVERLAY;
1221
1222 ret = drm_universal_plane_init(dev, &plane->base, 0,
1223 &layer_plane_funcs,
1224 desc->formats->formats,
1225 desc->formats->nformats,
1226 NULL, type, NULL);
1227 if (ret)
1228 return ret;
1229
1230 drm_plane_helper_add(&plane->base,
1231 &atmel_hlcdc_layer_plane_helper_funcs);
1232
1233 /* Set default property values*/
1234 ret = atmel_hlcdc_plane_init_properties(plane);
1235 if (ret)
1236 return ret;
1237
1238 dc->layers[desc->id] = &plane->layer;
1239
1240 return 0;
1241}
1242
1243int atmel_hlcdc_create_planes(struct drm_device *dev)
1244{
1245 struct atmel_hlcdc_dc *dc = dev->dev_private;
1246 const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers;
1247 int nlayers = dc->desc->nlayers;
1248 int i, ret;
1249
1250 dc->dscrpool = dmam_pool_create("atmel-hlcdc-dscr", dev->dev,
1251 sizeof(struct atmel_hlcdc_dma_channel_dscr),
1252 sizeof(u64), 0);
1253 if (!dc->dscrpool)
1254 return -ENOMEM;
1255
1256 for (i = 0; i < nlayers; i++) {
1257 if (descs[i].type != ATMEL_HLCDC_BASE_LAYER &&
1258 descs[i].type != ATMEL_HLCDC_OVERLAY_LAYER &&
1259 descs[i].type != ATMEL_HLCDC_CURSOR_LAYER)
1260 continue;
1261
1262 ret = atmel_hlcdc_plane_create(dev, &descs[i]);
1263 if (ret)
1264 return ret;
1265 }
1266
1267 return 0;
1268}
1/*
2 * Copyright (C) 2014 Free Electrons
3 * Copyright (C) 2014 Atmel
4 *
5 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include "atmel_hlcdc_dc.h"
21
22/**
23 * Atmel HLCDC Plane state structure.
24 *
25 * @base: DRM plane state
26 * @crtc_x: x position of the plane relative to the CRTC
27 * @crtc_y: y position of the plane relative to the CRTC
28 * @crtc_w: visible width of the plane
29 * @crtc_h: visible height of the plane
30 * @src_x: x buffer position
31 * @src_y: y buffer position
32 * @src_w: buffer width
33 * @src_h: buffer height
34 * @alpha: alpha blending of the plane
35 * @bpp: bytes per pixel deduced from pixel_format
36 * @offsets: offsets to apply to the GEM buffers
37 * @xstride: value to add to the pixel pointer between each line
38 * @pstride: value to add to the pixel pointer between each pixel
39 * @nplanes: number of planes (deduced from pixel_format)
40 */
41struct atmel_hlcdc_plane_state {
42 struct drm_plane_state base;
43 int crtc_x;
44 int crtc_y;
45 unsigned int crtc_w;
46 unsigned int crtc_h;
47 uint32_t src_x;
48 uint32_t src_y;
49 uint32_t src_w;
50 uint32_t src_h;
51
52 u8 alpha;
53
54 bool disc_updated;
55
56 int disc_x;
57 int disc_y;
58 int disc_w;
59 int disc_h;
60
61 /* These fields are private and should not be touched */
62 int bpp[ATMEL_HLCDC_MAX_PLANES];
63 unsigned int offsets[ATMEL_HLCDC_MAX_PLANES];
64 int xstride[ATMEL_HLCDC_MAX_PLANES];
65 int pstride[ATMEL_HLCDC_MAX_PLANES];
66 int nplanes;
67};
68
69static inline struct atmel_hlcdc_plane_state *
70drm_plane_state_to_atmel_hlcdc_plane_state(struct drm_plane_state *s)
71{
72 return container_of(s, struct atmel_hlcdc_plane_state, base);
73}
74
75#define SUBPIXEL_MASK 0xffff
76
77static uint32_t rgb_formats[] = {
78 DRM_FORMAT_XRGB4444,
79 DRM_FORMAT_ARGB4444,
80 DRM_FORMAT_RGBA4444,
81 DRM_FORMAT_ARGB1555,
82 DRM_FORMAT_RGB565,
83 DRM_FORMAT_RGB888,
84 DRM_FORMAT_XRGB8888,
85 DRM_FORMAT_ARGB8888,
86 DRM_FORMAT_RGBA8888,
87};
88
89struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats = {
90 .formats = rgb_formats,
91 .nformats = ARRAY_SIZE(rgb_formats),
92};
93
94static uint32_t rgb_and_yuv_formats[] = {
95 DRM_FORMAT_XRGB4444,
96 DRM_FORMAT_ARGB4444,
97 DRM_FORMAT_RGBA4444,
98 DRM_FORMAT_ARGB1555,
99 DRM_FORMAT_RGB565,
100 DRM_FORMAT_RGB888,
101 DRM_FORMAT_XRGB8888,
102 DRM_FORMAT_ARGB8888,
103 DRM_FORMAT_RGBA8888,
104 DRM_FORMAT_AYUV,
105 DRM_FORMAT_YUYV,
106 DRM_FORMAT_UYVY,
107 DRM_FORMAT_YVYU,
108 DRM_FORMAT_VYUY,
109 DRM_FORMAT_NV21,
110 DRM_FORMAT_NV61,
111 DRM_FORMAT_YUV422,
112 DRM_FORMAT_YUV420,
113};
114
115struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats = {
116 .formats = rgb_and_yuv_formats,
117 .nformats = ARRAY_SIZE(rgb_and_yuv_formats),
118};
119
120static int atmel_hlcdc_format_to_plane_mode(u32 format, u32 *mode)
121{
122 switch (format) {
123 case DRM_FORMAT_XRGB4444:
124 *mode = ATMEL_HLCDC_XRGB4444_MODE;
125 break;
126 case DRM_FORMAT_ARGB4444:
127 *mode = ATMEL_HLCDC_ARGB4444_MODE;
128 break;
129 case DRM_FORMAT_RGBA4444:
130 *mode = ATMEL_HLCDC_RGBA4444_MODE;
131 break;
132 case DRM_FORMAT_RGB565:
133 *mode = ATMEL_HLCDC_RGB565_MODE;
134 break;
135 case DRM_FORMAT_RGB888:
136 *mode = ATMEL_HLCDC_RGB888_MODE;
137 break;
138 case DRM_FORMAT_ARGB1555:
139 *mode = ATMEL_HLCDC_ARGB1555_MODE;
140 break;
141 case DRM_FORMAT_XRGB8888:
142 *mode = ATMEL_HLCDC_XRGB8888_MODE;
143 break;
144 case DRM_FORMAT_ARGB8888:
145 *mode = ATMEL_HLCDC_ARGB8888_MODE;
146 break;
147 case DRM_FORMAT_RGBA8888:
148 *mode = ATMEL_HLCDC_RGBA8888_MODE;
149 break;
150 case DRM_FORMAT_AYUV:
151 *mode = ATMEL_HLCDC_AYUV_MODE;
152 break;
153 case DRM_FORMAT_YUYV:
154 *mode = ATMEL_HLCDC_YUYV_MODE;
155 break;
156 case DRM_FORMAT_UYVY:
157 *mode = ATMEL_HLCDC_UYVY_MODE;
158 break;
159 case DRM_FORMAT_YVYU:
160 *mode = ATMEL_HLCDC_YVYU_MODE;
161 break;
162 case DRM_FORMAT_VYUY:
163 *mode = ATMEL_HLCDC_VYUY_MODE;
164 break;
165 case DRM_FORMAT_NV21:
166 *mode = ATMEL_HLCDC_NV21_MODE;
167 break;
168 case DRM_FORMAT_NV61:
169 *mode = ATMEL_HLCDC_NV61_MODE;
170 break;
171 case DRM_FORMAT_YUV420:
172 *mode = ATMEL_HLCDC_YUV420_MODE;
173 break;
174 case DRM_FORMAT_YUV422:
175 *mode = ATMEL_HLCDC_YUV422_MODE;
176 break;
177 default:
178 return -ENOTSUPP;
179 }
180
181 return 0;
182}
183
184static bool atmel_hlcdc_format_embeds_alpha(u32 format)
185{
186 int i;
187
188 for (i = 0; i < sizeof(format); i++) {
189 char tmp = (format >> (8 * i)) & 0xff;
190
191 if (tmp == 'A')
192 return true;
193 }
194
195 return false;
196}
197
198static u32 heo_downscaling_xcoef[] = {
199 0x11343311,
200 0x000000f7,
201 0x1635300c,
202 0x000000f9,
203 0x1b362c08,
204 0x000000fb,
205 0x1f372804,
206 0x000000fe,
207 0x24382400,
208 0x00000000,
209 0x28371ffe,
210 0x00000004,
211 0x2c361bfb,
212 0x00000008,
213 0x303516f9,
214 0x0000000c,
215};
216
217static u32 heo_downscaling_ycoef[] = {
218 0x00123737,
219 0x00173732,
220 0x001b382d,
221 0x001f3928,
222 0x00243824,
223 0x0028391f,
224 0x002d381b,
225 0x00323717,
226};
227
228static u32 heo_upscaling_xcoef[] = {
229 0xf74949f7,
230 0x00000000,
231 0xf55f33fb,
232 0x000000fe,
233 0xf5701efe,
234 0x000000ff,
235 0xf87c0dff,
236 0x00000000,
237 0x00800000,
238 0x00000000,
239 0x0d7cf800,
240 0x000000ff,
241 0x1e70f5ff,
242 0x000000fe,
243 0x335ff5fe,
244 0x000000fb,
245};
246
247static u32 heo_upscaling_ycoef[] = {
248 0x00004040,
249 0x00075920,
250 0x00056f0c,
251 0x00027b03,
252 0x00008000,
253 0x00037b02,
254 0x000c6f05,
255 0x00205907,
256};
257
258static void
259atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
260 struct atmel_hlcdc_plane_state *state)
261{
262 const struct atmel_hlcdc_layer_cfg_layout *layout =
263 &plane->layer.desc->layout;
264
265 if (layout->size)
266 atmel_hlcdc_layer_update_cfg(&plane->layer,
267 layout->size,
268 0xffffffff,
269 (state->crtc_w - 1) |
270 ((state->crtc_h - 1) << 16));
271
272 if (layout->memsize)
273 atmel_hlcdc_layer_update_cfg(&plane->layer,
274 layout->memsize,
275 0xffffffff,
276 (state->src_w - 1) |
277 ((state->src_h - 1) << 16));
278
279 if (layout->pos)
280 atmel_hlcdc_layer_update_cfg(&plane->layer,
281 layout->pos,
282 0xffffffff,
283 state->crtc_x |
284 (state->crtc_y << 16));
285
286 /* TODO: rework the rescaling part */
287 if (state->crtc_w != state->src_w || state->crtc_h != state->src_h) {
288 u32 factor_reg = 0;
289
290 if (state->crtc_w != state->src_w) {
291 int i;
292 u32 factor;
293 u32 *coeff_tab = heo_upscaling_xcoef;
294 u32 max_memsize;
295
296 if (state->crtc_w < state->src_w)
297 coeff_tab = heo_downscaling_xcoef;
298 for (i = 0; i < ARRAY_SIZE(heo_upscaling_xcoef); i++)
299 atmel_hlcdc_layer_update_cfg(&plane->layer,
300 17 + i,
301 0xffffffff,
302 coeff_tab[i]);
303 factor = ((8 * 256 * state->src_w) - (256 * 4)) /
304 state->crtc_w;
305 factor++;
306 max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
307 2048;
308 if (max_memsize > state->src_w)
309 factor--;
310 factor_reg |= factor | 0x80000000;
311 }
312
313 if (state->crtc_h != state->src_h) {
314 int i;
315 u32 factor;
316 u32 *coeff_tab = heo_upscaling_ycoef;
317 u32 max_memsize;
318
319 if (state->crtc_w < state->src_w)
320 coeff_tab = heo_downscaling_ycoef;
321 for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++)
322 atmel_hlcdc_layer_update_cfg(&plane->layer,
323 33 + i,
324 0xffffffff,
325 coeff_tab[i]);
326 factor = ((8 * 256 * state->src_w) - (256 * 4)) /
327 state->crtc_w;
328 factor++;
329 max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
330 2048;
331 if (max_memsize > state->src_w)
332 factor--;
333 factor_reg |= (factor << 16) | 0x80000000;
334 }
335
336 atmel_hlcdc_layer_update_cfg(&plane->layer, 13, 0xffffffff,
337 factor_reg);
338 }
339}
340
341static void
342atmel_hlcdc_plane_update_general_settings(struct atmel_hlcdc_plane *plane,
343 struct atmel_hlcdc_plane_state *state)
344{
345 const struct atmel_hlcdc_layer_cfg_layout *layout =
346 &plane->layer.desc->layout;
347 unsigned int cfg = ATMEL_HLCDC_LAYER_DMA;
348
349 if (plane->base.type != DRM_PLANE_TYPE_PRIMARY) {
350 cfg |= ATMEL_HLCDC_LAYER_OVR | ATMEL_HLCDC_LAYER_ITER2BL |
351 ATMEL_HLCDC_LAYER_ITER;
352
353 if (atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format))
354 cfg |= ATMEL_HLCDC_LAYER_LAEN;
355 else
356 cfg |= ATMEL_HLCDC_LAYER_GAEN |
357 ATMEL_HLCDC_LAYER_GA(state->alpha);
358 }
359
360 atmel_hlcdc_layer_update_cfg(&plane->layer,
361 ATMEL_HLCDC_LAYER_DMA_CFG_ID,
362 ATMEL_HLCDC_LAYER_DMA_BLEN_MASK,
363 ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16);
364
365 atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
366 ATMEL_HLCDC_LAYER_ITER2BL |
367 ATMEL_HLCDC_LAYER_ITER |
368 ATMEL_HLCDC_LAYER_GAEN |
369 ATMEL_HLCDC_LAYER_GA_MASK |
370 ATMEL_HLCDC_LAYER_LAEN |
371 ATMEL_HLCDC_LAYER_OVR |
372 ATMEL_HLCDC_LAYER_DMA, cfg);
373}
374
375static void atmel_hlcdc_plane_update_format(struct atmel_hlcdc_plane *plane,
376 struct atmel_hlcdc_plane_state *state)
377{
378 u32 cfg;
379 int ret;
380
381 ret = atmel_hlcdc_format_to_plane_mode(state->base.fb->pixel_format,
382 &cfg);
383 if (ret)
384 return;
385
386 if ((state->base.fb->pixel_format == DRM_FORMAT_YUV422 ||
387 state->base.fb->pixel_format == DRM_FORMAT_NV61) &&
388 (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))))
389 cfg |= ATMEL_HLCDC_YUV422ROT;
390
391 atmel_hlcdc_layer_update_cfg(&plane->layer,
392 ATMEL_HLCDC_LAYER_FORMAT_CFG_ID,
393 0xffffffff,
394 cfg);
395
396 /*
397 * Rotation optimization is not working on RGB888 (rotation is still
398 * working but without any optimization).
399 */
400 if (state->base.fb->pixel_format == DRM_FORMAT_RGB888)
401 cfg = ATMEL_HLCDC_LAYER_DMA_ROTDIS;
402 else
403 cfg = 0;
404
405 atmel_hlcdc_layer_update_cfg(&plane->layer,
406 ATMEL_HLCDC_LAYER_DMA_CFG_ID,
407 ATMEL_HLCDC_LAYER_DMA_ROTDIS, cfg);
408}
409
410static void atmel_hlcdc_plane_update_buffers(struct atmel_hlcdc_plane *plane,
411 struct atmel_hlcdc_plane_state *state)
412{
413 struct atmel_hlcdc_layer *layer = &plane->layer;
414 const struct atmel_hlcdc_layer_cfg_layout *layout =
415 &layer->desc->layout;
416 int i;
417
418 atmel_hlcdc_layer_update_set_fb(&plane->layer, state->base.fb,
419 state->offsets);
420
421 for (i = 0; i < state->nplanes; i++) {
422 if (layout->xstride[i]) {
423 atmel_hlcdc_layer_update_cfg(&plane->layer,
424 layout->xstride[i],
425 0xffffffff,
426 state->xstride[i]);
427 }
428
429 if (layout->pstride[i]) {
430 atmel_hlcdc_layer_update_cfg(&plane->layer,
431 layout->pstride[i],
432 0xffffffff,
433 state->pstride[i]);
434 }
435 }
436}
437
438int
439atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state)
440{
441 int disc_x = 0, disc_y = 0, disc_w = 0, disc_h = 0;
442 const struct atmel_hlcdc_layer_cfg_layout *layout;
443 struct atmel_hlcdc_plane_state *primary_state;
444 struct drm_plane_state *primary_s;
445 struct atmel_hlcdc_plane *primary;
446 struct drm_plane *ovl;
447
448 primary = drm_plane_to_atmel_hlcdc_plane(c_state->crtc->primary);
449 layout = &primary->layer.desc->layout;
450 if (!layout->disc_pos || !layout->disc_size)
451 return 0;
452
453 primary_s = drm_atomic_get_plane_state(c_state->state,
454 &primary->base);
455 if (IS_ERR(primary_s))
456 return PTR_ERR(primary_s);
457
458 primary_state = drm_plane_state_to_atmel_hlcdc_plane_state(primary_s);
459
460 drm_atomic_crtc_state_for_each_plane(ovl, c_state) {
461 struct atmel_hlcdc_plane_state *ovl_state;
462 struct drm_plane_state *ovl_s;
463
464 if (ovl == c_state->crtc->primary)
465 continue;
466
467 ovl_s = drm_atomic_get_plane_state(c_state->state, ovl);
468 if (IS_ERR(ovl_s))
469 return PTR_ERR(ovl_s);
470
471 ovl_state = drm_plane_state_to_atmel_hlcdc_plane_state(ovl_s);
472
473 if (!ovl_s->fb ||
474 atmel_hlcdc_format_embeds_alpha(ovl_s->fb->pixel_format) ||
475 ovl_state->alpha != 255)
476 continue;
477
478 /* TODO: implement a smarter hidden area detection */
479 if (ovl_state->crtc_h * ovl_state->crtc_w < disc_h * disc_w)
480 continue;
481
482 disc_x = ovl_state->crtc_x;
483 disc_y = ovl_state->crtc_y;
484 disc_h = ovl_state->crtc_h;
485 disc_w = ovl_state->crtc_w;
486 }
487
488 if (disc_x == primary_state->disc_x &&
489 disc_y == primary_state->disc_y &&
490 disc_w == primary_state->disc_w &&
491 disc_h == primary_state->disc_h)
492 return 0;
493
494
495 primary_state->disc_x = disc_x;
496 primary_state->disc_y = disc_y;
497 primary_state->disc_w = disc_w;
498 primary_state->disc_h = disc_h;
499 primary_state->disc_updated = true;
500
501 return 0;
502}
503
504static void
505atmel_hlcdc_plane_update_disc_area(struct atmel_hlcdc_plane *plane,
506 struct atmel_hlcdc_plane_state *state)
507{
508 const struct atmel_hlcdc_layer_cfg_layout *layout =
509 &plane->layer.desc->layout;
510 int disc_surface = 0;
511
512 if (!state->disc_updated)
513 return;
514
515 disc_surface = state->disc_h * state->disc_w;
516
517 atmel_hlcdc_layer_update_cfg(&plane->layer, layout->general_config,
518 ATMEL_HLCDC_LAYER_DISCEN,
519 disc_surface ? ATMEL_HLCDC_LAYER_DISCEN : 0);
520
521 if (!disc_surface)
522 return;
523
524 atmel_hlcdc_layer_update_cfg(&plane->layer,
525 layout->disc_pos,
526 0xffffffff,
527 state->disc_x | (state->disc_y << 16));
528
529 atmel_hlcdc_layer_update_cfg(&plane->layer,
530 layout->disc_size,
531 0xffffffff,
532 (state->disc_w - 1) |
533 ((state->disc_h - 1) << 16));
534}
535
536static int atmel_hlcdc_plane_atomic_check(struct drm_plane *p,
537 struct drm_plane_state *s)
538{
539 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
540 struct atmel_hlcdc_plane_state *state =
541 drm_plane_state_to_atmel_hlcdc_plane_state(s);
542 const struct atmel_hlcdc_layer_cfg_layout *layout =
543 &plane->layer.desc->layout;
544 struct drm_framebuffer *fb = state->base.fb;
545 const struct drm_display_mode *mode;
546 struct drm_crtc_state *crtc_state;
547 unsigned int patched_crtc_w;
548 unsigned int patched_crtc_h;
549 unsigned int patched_src_w;
550 unsigned int patched_src_h;
551 unsigned int tmp;
552 int x_offset = 0;
553 int y_offset = 0;
554 int hsub = 1;
555 int vsub = 1;
556 int i;
557
558 if (!state->base.crtc || !fb)
559 return 0;
560
561 crtc_state = drm_atomic_get_existing_crtc_state(s->state, s->crtc);
562 mode = &crtc_state->adjusted_mode;
563
564 state->src_x = s->src_x;
565 state->src_y = s->src_y;
566 state->src_h = s->src_h;
567 state->src_w = s->src_w;
568 state->crtc_x = s->crtc_x;
569 state->crtc_y = s->crtc_y;
570 state->crtc_h = s->crtc_h;
571 state->crtc_w = s->crtc_w;
572 if ((state->src_x | state->src_y | state->src_w | state->src_h) &
573 SUBPIXEL_MASK)
574 return -EINVAL;
575
576 state->src_x >>= 16;
577 state->src_y >>= 16;
578 state->src_w >>= 16;
579 state->src_h >>= 16;
580
581 state->nplanes = drm_format_num_planes(fb->pixel_format);
582 if (state->nplanes > ATMEL_HLCDC_MAX_PLANES)
583 return -EINVAL;
584
585 /*
586 * Swap width and size in case of 90 or 270 degrees rotation
587 */
588 if (state->base.rotation & (BIT(DRM_ROTATE_90) | BIT(DRM_ROTATE_270))) {
589 tmp = state->crtc_w;
590 state->crtc_w = state->crtc_h;
591 state->crtc_h = tmp;
592 tmp = state->src_w;
593 state->src_w = state->src_h;
594 state->src_h = tmp;
595 }
596
597 if (state->crtc_x + state->crtc_w > mode->hdisplay)
598 patched_crtc_w = mode->hdisplay - state->crtc_x;
599 else
600 patched_crtc_w = state->crtc_w;
601
602 if (state->crtc_x < 0) {
603 patched_crtc_w += state->crtc_x;
604 x_offset = -state->crtc_x;
605 state->crtc_x = 0;
606 }
607
608 if (state->crtc_y + state->crtc_h > mode->vdisplay)
609 patched_crtc_h = mode->vdisplay - state->crtc_y;
610 else
611 patched_crtc_h = state->crtc_h;
612
613 if (state->crtc_y < 0) {
614 patched_crtc_h += state->crtc_y;
615 y_offset = -state->crtc_y;
616 state->crtc_y = 0;
617 }
618
619 patched_src_w = DIV_ROUND_CLOSEST(patched_crtc_w * state->src_w,
620 state->crtc_w);
621 patched_src_h = DIV_ROUND_CLOSEST(patched_crtc_h * state->src_h,
622 state->crtc_h);
623
624 hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
625 vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
626
627 for (i = 0; i < state->nplanes; i++) {
628 unsigned int offset = 0;
629 int xdiv = i ? hsub : 1;
630 int ydiv = i ? vsub : 1;
631
632 state->bpp[i] = drm_format_plane_cpp(fb->pixel_format, i);
633 if (!state->bpp[i])
634 return -EINVAL;
635
636 switch (state->base.rotation & DRM_ROTATE_MASK) {
637 case BIT(DRM_ROTATE_90):
638 offset = ((y_offset + state->src_y + patched_src_w - 1) /
639 ydiv) * fb->pitches[i];
640 offset += ((x_offset + state->src_x) / xdiv) *
641 state->bpp[i];
642 state->xstride[i] = ((patched_src_w - 1) / ydiv) *
643 fb->pitches[i];
644 state->pstride[i] = -fb->pitches[i] - state->bpp[i];
645 break;
646 case BIT(DRM_ROTATE_180):
647 offset = ((y_offset + state->src_y + patched_src_h - 1) /
648 ydiv) * fb->pitches[i];
649 offset += ((x_offset + state->src_x + patched_src_w - 1) /
650 xdiv) * state->bpp[i];
651 state->xstride[i] = ((((patched_src_w - 1) / xdiv) - 1) *
652 state->bpp[i]) - fb->pitches[i];
653 state->pstride[i] = -2 * state->bpp[i];
654 break;
655 case BIT(DRM_ROTATE_270):
656 offset = ((y_offset + state->src_y) / ydiv) *
657 fb->pitches[i];
658 offset += ((x_offset + state->src_x + patched_src_h - 1) /
659 xdiv) * state->bpp[i];
660 state->xstride[i] = -(((patched_src_w - 1) / ydiv) *
661 fb->pitches[i]) -
662 (2 * state->bpp[i]);
663 state->pstride[i] = fb->pitches[i] - state->bpp[i];
664 break;
665 case BIT(DRM_ROTATE_0):
666 default:
667 offset = ((y_offset + state->src_y) / ydiv) *
668 fb->pitches[i];
669 offset += ((x_offset + state->src_x) / xdiv) *
670 state->bpp[i];
671 state->xstride[i] = fb->pitches[i] -
672 ((patched_src_w / xdiv) *
673 state->bpp[i]);
674 state->pstride[i] = 0;
675 break;
676 }
677
678 state->offsets[i] = offset + fb->offsets[i];
679 }
680
681 state->src_w = patched_src_w;
682 state->src_h = patched_src_h;
683 state->crtc_w = patched_crtc_w;
684 state->crtc_h = patched_crtc_h;
685
686 if (!layout->size &&
687 (mode->hdisplay != state->crtc_w ||
688 mode->vdisplay != state->crtc_h))
689 return -EINVAL;
690
691 if (plane->layer.desc->max_height &&
692 state->crtc_h > plane->layer.desc->max_height)
693 return -EINVAL;
694
695 if (plane->layer.desc->max_width &&
696 state->crtc_w > plane->layer.desc->max_width)
697 return -EINVAL;
698
699 if ((state->crtc_h != state->src_h || state->crtc_w != state->src_w) &&
700 (!layout->memsize ||
701 atmel_hlcdc_format_embeds_alpha(state->base.fb->pixel_format)))
702 return -EINVAL;
703
704 if (state->crtc_x < 0 || state->crtc_y < 0)
705 return -EINVAL;
706
707 if (state->crtc_w + state->crtc_x > mode->hdisplay ||
708 state->crtc_h + state->crtc_y > mode->vdisplay)
709 return -EINVAL;
710
711 return 0;
712}
713
714static int atmel_hlcdc_plane_prepare_fb(struct drm_plane *p,
715 const struct drm_plane_state *new_state)
716{
717 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
718
719 if (!new_state->fb)
720 return 0;
721
722 return atmel_hlcdc_layer_update_start(&plane->layer);
723}
724
725static void atmel_hlcdc_plane_atomic_update(struct drm_plane *p,
726 struct drm_plane_state *old_s)
727{
728 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
729 struct atmel_hlcdc_plane_state *state =
730 drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
731
732 if (!p->state->crtc || !p->state->fb)
733 return;
734
735 atmel_hlcdc_plane_update_pos_and_size(plane, state);
736 atmel_hlcdc_plane_update_general_settings(plane, state);
737 atmel_hlcdc_plane_update_format(plane, state);
738 atmel_hlcdc_plane_update_buffers(plane, state);
739 atmel_hlcdc_plane_update_disc_area(plane, state);
740
741 atmel_hlcdc_layer_update_commit(&plane->layer);
742}
743
744static void atmel_hlcdc_plane_atomic_disable(struct drm_plane *p,
745 struct drm_plane_state *old_state)
746{
747 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
748
749 atmel_hlcdc_layer_disable(&plane->layer);
750}
751
752static void atmel_hlcdc_plane_destroy(struct drm_plane *p)
753{
754 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
755
756 if (plane->base.fb)
757 drm_framebuffer_unreference(plane->base.fb);
758
759 atmel_hlcdc_layer_cleanup(p->dev, &plane->layer);
760
761 drm_plane_cleanup(p);
762 devm_kfree(p->dev->dev, plane);
763}
764
765static int atmel_hlcdc_plane_atomic_set_property(struct drm_plane *p,
766 struct drm_plane_state *s,
767 struct drm_property *property,
768 uint64_t val)
769{
770 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
771 struct atmel_hlcdc_plane_properties *props = plane->properties;
772 struct atmel_hlcdc_plane_state *state =
773 drm_plane_state_to_atmel_hlcdc_plane_state(s);
774
775 if (property == props->alpha)
776 state->alpha = val;
777 else
778 return -EINVAL;
779
780 return 0;
781}
782
783static int atmel_hlcdc_plane_atomic_get_property(struct drm_plane *p,
784 const struct drm_plane_state *s,
785 struct drm_property *property,
786 uint64_t *val)
787{
788 struct atmel_hlcdc_plane *plane = drm_plane_to_atmel_hlcdc_plane(p);
789 struct atmel_hlcdc_plane_properties *props = plane->properties;
790 const struct atmel_hlcdc_plane_state *state =
791 container_of(s, const struct atmel_hlcdc_plane_state, base);
792
793 if (property == props->alpha)
794 *val = state->alpha;
795 else
796 return -EINVAL;
797
798 return 0;
799}
800
801static void atmel_hlcdc_plane_init_properties(struct atmel_hlcdc_plane *plane,
802 const struct atmel_hlcdc_layer_desc *desc,
803 struct atmel_hlcdc_plane_properties *props)
804{
805 struct regmap *regmap = plane->layer.hlcdc->regmap;
806
807 if (desc->type == ATMEL_HLCDC_OVERLAY_LAYER ||
808 desc->type == ATMEL_HLCDC_CURSOR_LAYER) {
809 drm_object_attach_property(&plane->base.base,
810 props->alpha, 255);
811
812 /* Set default alpha value */
813 regmap_update_bits(regmap,
814 desc->regs_offset +
815 ATMEL_HLCDC_LAYER_GENERAL_CFG(&plane->layer),
816 ATMEL_HLCDC_LAYER_GA_MASK,
817 ATMEL_HLCDC_LAYER_GA_MASK);
818 }
819
820 if (desc->layout.xstride && desc->layout.pstride)
821 drm_object_attach_property(&plane->base.base,
822 plane->base.dev->mode_config.rotation_property,
823 BIT(DRM_ROTATE_0));
824
825 if (desc->layout.csc) {
826 /*
827 * TODO: decare a "yuv-to-rgb-conv-factors" property to let
828 * userspace modify these factors (using a BLOB property ?).
829 */
830 regmap_write(regmap,
831 desc->regs_offset +
832 ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 0),
833 0x4c900091);
834 regmap_write(regmap,
835 desc->regs_offset +
836 ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 1),
837 0x7a5f5090);
838 regmap_write(regmap,
839 desc->regs_offset +
840 ATMEL_HLCDC_LAYER_CSC_CFG(&plane->layer, 2),
841 0x40040890);
842 }
843}
844
845static struct drm_plane_helper_funcs atmel_hlcdc_layer_plane_helper_funcs = {
846 .prepare_fb = atmel_hlcdc_plane_prepare_fb,
847 .atomic_check = atmel_hlcdc_plane_atomic_check,
848 .atomic_update = atmel_hlcdc_plane_atomic_update,
849 .atomic_disable = atmel_hlcdc_plane_atomic_disable,
850};
851
852static void atmel_hlcdc_plane_reset(struct drm_plane *p)
853{
854 struct atmel_hlcdc_plane_state *state;
855
856 if (p->state) {
857 state = drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
858
859 if (state->base.fb)
860 drm_framebuffer_unreference(state->base.fb);
861
862 kfree(state);
863 p->state = NULL;
864 }
865
866 state = kzalloc(sizeof(*state), GFP_KERNEL);
867 if (state) {
868 state->alpha = 255;
869 p->state = &state->base;
870 p->state->plane = p;
871 }
872}
873
874static struct drm_plane_state *
875atmel_hlcdc_plane_atomic_duplicate_state(struct drm_plane *p)
876{
877 struct atmel_hlcdc_plane_state *state =
878 drm_plane_state_to_atmel_hlcdc_plane_state(p->state);
879 struct atmel_hlcdc_plane_state *copy;
880
881 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
882 if (!copy)
883 return NULL;
884
885 copy->disc_updated = false;
886
887 if (copy->base.fb)
888 drm_framebuffer_reference(copy->base.fb);
889
890 return ©->base;
891}
892
893static void atmel_hlcdc_plane_atomic_destroy_state(struct drm_plane *plane,
894 struct drm_plane_state *s)
895{
896 struct atmel_hlcdc_plane_state *state =
897 drm_plane_state_to_atmel_hlcdc_plane_state(s);
898
899 if (s->fb)
900 drm_framebuffer_unreference(s->fb);
901
902 kfree(state);
903}
904
905static struct drm_plane_funcs layer_plane_funcs = {
906 .update_plane = drm_atomic_helper_update_plane,
907 .disable_plane = drm_atomic_helper_disable_plane,
908 .set_property = drm_atomic_helper_plane_set_property,
909 .destroy = atmel_hlcdc_plane_destroy,
910 .reset = atmel_hlcdc_plane_reset,
911 .atomic_duplicate_state = atmel_hlcdc_plane_atomic_duplicate_state,
912 .atomic_destroy_state = atmel_hlcdc_plane_atomic_destroy_state,
913 .atomic_set_property = atmel_hlcdc_plane_atomic_set_property,
914 .atomic_get_property = atmel_hlcdc_plane_atomic_get_property,
915};
916
917static struct atmel_hlcdc_plane *
918atmel_hlcdc_plane_create(struct drm_device *dev,
919 const struct atmel_hlcdc_layer_desc *desc,
920 struct atmel_hlcdc_plane_properties *props)
921{
922 struct atmel_hlcdc_plane *plane;
923 enum drm_plane_type type;
924 int ret;
925
926 plane = devm_kzalloc(dev->dev, sizeof(*plane), GFP_KERNEL);
927 if (!plane)
928 return ERR_PTR(-ENOMEM);
929
930 ret = atmel_hlcdc_layer_init(dev, &plane->layer, desc);
931 if (ret)
932 return ERR_PTR(ret);
933
934 if (desc->type == ATMEL_HLCDC_BASE_LAYER)
935 type = DRM_PLANE_TYPE_PRIMARY;
936 else if (desc->type == ATMEL_HLCDC_CURSOR_LAYER)
937 type = DRM_PLANE_TYPE_CURSOR;
938 else
939 type = DRM_PLANE_TYPE_OVERLAY;
940
941 ret = drm_universal_plane_init(dev, &plane->base, 0,
942 &layer_plane_funcs,
943 desc->formats->formats,
944 desc->formats->nformats, type, NULL);
945 if (ret)
946 return ERR_PTR(ret);
947
948 drm_plane_helper_add(&plane->base,
949 &atmel_hlcdc_layer_plane_helper_funcs);
950
951 /* Set default property values*/
952 atmel_hlcdc_plane_init_properties(plane, desc, props);
953
954 return plane;
955}
956
957static struct atmel_hlcdc_plane_properties *
958atmel_hlcdc_plane_create_properties(struct drm_device *dev)
959{
960 struct atmel_hlcdc_plane_properties *props;
961
962 props = devm_kzalloc(dev->dev, sizeof(*props), GFP_KERNEL);
963 if (!props)
964 return ERR_PTR(-ENOMEM);
965
966 props->alpha = drm_property_create_range(dev, 0, "alpha", 0, 255);
967 if (!props->alpha)
968 return ERR_PTR(-ENOMEM);
969
970 dev->mode_config.rotation_property =
971 drm_mode_create_rotation_property(dev,
972 BIT(DRM_ROTATE_0) |
973 BIT(DRM_ROTATE_90) |
974 BIT(DRM_ROTATE_180) |
975 BIT(DRM_ROTATE_270));
976 if (!dev->mode_config.rotation_property)
977 return ERR_PTR(-ENOMEM);
978
979 return props;
980}
981
982struct atmel_hlcdc_planes *
983atmel_hlcdc_create_planes(struct drm_device *dev)
984{
985 struct atmel_hlcdc_dc *dc = dev->dev_private;
986 struct atmel_hlcdc_plane_properties *props;
987 struct atmel_hlcdc_planes *planes;
988 const struct atmel_hlcdc_layer_desc *descs = dc->desc->layers;
989 int nlayers = dc->desc->nlayers;
990 int i;
991
992 planes = devm_kzalloc(dev->dev, sizeof(*planes), GFP_KERNEL);
993 if (!planes)
994 return ERR_PTR(-ENOMEM);
995
996 for (i = 0; i < nlayers; i++) {
997 if (descs[i].type == ATMEL_HLCDC_OVERLAY_LAYER)
998 planes->noverlays++;
999 }
1000
1001 if (planes->noverlays) {
1002 planes->overlays = devm_kzalloc(dev->dev,
1003 planes->noverlays *
1004 sizeof(*planes->overlays),
1005 GFP_KERNEL);
1006 if (!planes->overlays)
1007 return ERR_PTR(-ENOMEM);
1008 }
1009
1010 props = atmel_hlcdc_plane_create_properties(dev);
1011 if (IS_ERR(props))
1012 return ERR_CAST(props);
1013
1014 planes->noverlays = 0;
1015 for (i = 0; i < nlayers; i++) {
1016 struct atmel_hlcdc_plane *plane;
1017
1018 if (descs[i].type == ATMEL_HLCDC_PP_LAYER)
1019 continue;
1020
1021 plane = atmel_hlcdc_plane_create(dev, &descs[i], props);
1022 if (IS_ERR(plane))
1023 return ERR_CAST(plane);
1024
1025 plane->properties = props;
1026
1027 switch (descs[i].type) {
1028 case ATMEL_HLCDC_BASE_LAYER:
1029 if (planes->primary)
1030 return ERR_PTR(-EINVAL);
1031 planes->primary = plane;
1032 break;
1033
1034 case ATMEL_HLCDC_OVERLAY_LAYER:
1035 planes->overlays[planes->noverlays++] = plane;
1036 break;
1037
1038 case ATMEL_HLCDC_CURSOR_LAYER:
1039 if (planes->cursor)
1040 return ERR_PTR(-EINVAL);
1041 planes->cursor = plane;
1042 break;
1043
1044 default:
1045 break;
1046 }
1047 }
1048
1049 return planes;
1050}