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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) Jernej Skrabec <jernej.skrabec@siol.net>
4 */
5
6#include <drm/drm_atomic.h>
7#include <drm/drm_atomic_helper.h>
8#include <drm/drm_blend.h>
9#include <drm/drm_crtc.h>
10#include <drm/drm_fb_dma_helper.h>
11#include <drm/drm_framebuffer.h>
12#include <drm/drm_gem_atomic_helper.h>
13#include <drm/drm_gem_dma_helper.h>
14#include <drm/drm_probe_helper.h>
15
16#include "sun8i_csc.h"
17#include "sun8i_mixer.h"
18#include "sun8i_vi_layer.h"
19#include "sun8i_vi_scaler.h"
20
21static void sun8i_vi_layer_update_alpha(struct sun8i_mixer *mixer, int channel,
22 int overlay, struct drm_plane *plane)
23{
24 u32 mask, val, ch_base;
25
26 ch_base = sun8i_channel_base(mixer, channel);
27
28 if (mixer->cfg->is_de3) {
29 mask = SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK |
30 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MODE_MASK;
31 val = SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA
32 (plane->state->alpha >> 8);
33
34 val |= (plane->state->alpha == DRM_BLEND_ALPHA_OPAQUE) ?
35 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MODE_PIXEL :
36 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MODE_COMBINED;
37
38 regmap_update_bits(mixer->engine.regs,
39 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base,
40 overlay),
41 mask, val);
42 } else if (mixer->cfg->vi_num == 1) {
43 regmap_update_bits(mixer->engine.regs,
44 SUN8I_MIXER_FCC_GLOBAL_ALPHA_REG,
45 SUN8I_MIXER_FCC_GLOBAL_ALPHA_MASK,
46 SUN8I_MIXER_FCC_GLOBAL_ALPHA
47 (plane->state->alpha >> 8));
48 }
49}
50
51static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
52 int overlay, struct drm_plane *plane,
53 unsigned int zpos)
54{
55 struct drm_plane_state *state = plane->state;
56 const struct drm_format_info *format = state->fb->format;
57 u32 src_w, src_h, dst_w, dst_h;
58 u32 bld_base, ch_base;
59 u32 outsize, insize;
60 u32 hphase, vphase;
61 u32 hn = 0, hm = 0;
62 u32 vn = 0, vm = 0;
63 bool subsampled;
64
65 DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n",
66 channel, overlay);
67
68 bld_base = sun8i_blender_base(mixer);
69 ch_base = sun8i_channel_base(mixer, channel);
70
71 src_w = drm_rect_width(&state->src) >> 16;
72 src_h = drm_rect_height(&state->src) >> 16;
73 dst_w = drm_rect_width(&state->dst);
74 dst_h = drm_rect_height(&state->dst);
75
76 hphase = state->src.x1 & 0xffff;
77 vphase = state->src.y1 & 0xffff;
78
79 /* make coordinates dividable by subsampling factor */
80 if (format->hsub > 1) {
81 int mask, remainder;
82
83 mask = format->hsub - 1;
84 remainder = (state->src.x1 >> 16) & mask;
85 src_w = (src_w + remainder) & ~mask;
86 hphase += remainder << 16;
87 }
88
89 if (format->vsub > 1) {
90 int mask, remainder;
91
92 mask = format->vsub - 1;
93 remainder = (state->src.y1 >> 16) & mask;
94 src_h = (src_h + remainder) & ~mask;
95 vphase += remainder << 16;
96 }
97
98 insize = SUN8I_MIXER_SIZE(src_w, src_h);
99 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
100
101 /* Set height and width */
102 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
103 (state->src.x1 >> 16) & ~(format->hsub - 1),
104 (state->src.y1 >> 16) & ~(format->vsub - 1));
105 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
106 regmap_write(mixer->engine.regs,
107 SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch_base, overlay),
108 insize);
109 regmap_write(mixer->engine.regs,
110 SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch_base),
111 insize);
112
113 /*
114 * Scaler must be enabled for subsampled formats, so it scales
115 * chroma to same size as luma.
116 */
117 subsampled = format->hsub > 1 || format->vsub > 1;
118
119 if (insize != outsize || subsampled || hphase || vphase) {
120 unsigned int scanline, required;
121 struct drm_display_mode *mode;
122 u32 hscale, vscale, fps;
123 u64 ability;
124
125 DRM_DEBUG_DRIVER("HW scaling is enabled\n");
126
127 mode = &plane->state->crtc->state->mode;
128 fps = (mode->clock * 1000) / (mode->vtotal * mode->htotal);
129 ability = clk_get_rate(mixer->mod_clk);
130 /* BSP algorithm assumes 80% efficiency of VI scaler unit */
131 ability *= 80;
132 do_div(ability, mode->vdisplay * fps * max(src_w, dst_w));
133
134 required = src_h * 100 / dst_h;
135
136 if (ability < required) {
137 DRM_DEBUG_DRIVER("Using vertical coarse scaling\n");
138 vm = src_h;
139 vn = (u32)ability * dst_h / 100;
140 src_h = vn;
141 }
142
143 /* it seems that every RGB scaler has buffer for 2048 pixels */
144 scanline = subsampled ? mixer->cfg->scanline_yuv : 2048;
145
146 if (src_w > scanline) {
147 DRM_DEBUG_DRIVER("Using horizontal coarse scaling\n");
148 hm = src_w;
149 hn = scanline;
150 src_w = hn;
151 }
152
153 hscale = (src_w << 16) / dst_w;
154 vscale = (src_h << 16) / dst_h;
155
156 sun8i_vi_scaler_setup(mixer, channel, src_w, src_h, dst_w,
157 dst_h, hscale, vscale, hphase, vphase,
158 format);
159 sun8i_vi_scaler_enable(mixer, channel, true);
160 } else {
161 DRM_DEBUG_DRIVER("HW scaling is not needed\n");
162 sun8i_vi_scaler_enable(mixer, channel, false);
163 }
164
165 regmap_write(mixer->engine.regs,
166 SUN8I_MIXER_CHAN_VI_HDS_Y(ch_base),
167 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
168 SUN8I_MIXER_CHAN_VI_DS_M(hm));
169 regmap_write(mixer->engine.regs,
170 SUN8I_MIXER_CHAN_VI_HDS_UV(ch_base),
171 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
172 SUN8I_MIXER_CHAN_VI_DS_M(hm));
173 regmap_write(mixer->engine.regs,
174 SUN8I_MIXER_CHAN_VI_VDS_Y(ch_base),
175 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
176 SUN8I_MIXER_CHAN_VI_DS_M(vm));
177 regmap_write(mixer->engine.regs,
178 SUN8I_MIXER_CHAN_VI_VDS_UV(ch_base),
179 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
180 SUN8I_MIXER_CHAN_VI_DS_M(vm));
181
182 /* Set base coordinates */
183 DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
184 state->dst.x1, state->dst.y1);
185 DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
186 regmap_write(mixer->engine.regs,
187 SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
188 SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
189 regmap_write(mixer->engine.regs,
190 SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
191 outsize);
192
193 return 0;
194}
195
196static u32 sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format)
197{
198 if (!format->is_yuv)
199 return SUN8I_CSC_MODE_OFF;
200
201 switch (format->format) {
202 case DRM_FORMAT_YVU411:
203 case DRM_FORMAT_YVU420:
204 case DRM_FORMAT_YVU422:
205 case DRM_FORMAT_YVU444:
206 return SUN8I_CSC_MODE_YVU2RGB;
207 default:
208 return SUN8I_CSC_MODE_YUV2RGB;
209 }
210}
211
212static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
213 int overlay, struct drm_plane *plane)
214{
215 struct drm_plane_state *state = plane->state;
216 u32 val, ch_base, csc_mode, hw_fmt;
217 const struct drm_format_info *fmt;
218 int ret;
219
220 ch_base = sun8i_channel_base(mixer, channel);
221
222 fmt = state->fb->format;
223 ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
224 if (ret) {
225 DRM_DEBUG_DRIVER("Invalid format\n");
226 return ret;
227 }
228
229 val = hw_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
230 regmap_update_bits(mixer->engine.regs,
231 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
232 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);
233
234 csc_mode = sun8i_vi_layer_get_csc_mode(fmt);
235 if (csc_mode != SUN8I_CSC_MODE_OFF) {
236 sun8i_csc_set_ccsc_coefficients(mixer, channel, csc_mode,
237 state->color_encoding,
238 state->color_range);
239 sun8i_csc_enable_ccsc(mixer, channel, true);
240 } else {
241 sun8i_csc_enable_ccsc(mixer, channel, false);
242 }
243
244 if (!fmt->is_yuv)
245 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE;
246 else
247 val = 0;
248
249 regmap_update_bits(mixer->engine.regs,
250 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
251 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val);
252
253 return 0;
254}
255
256static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
257 int overlay, struct drm_plane *plane)
258{
259 struct drm_plane_state *state = plane->state;
260 struct drm_framebuffer *fb = state->fb;
261 const struct drm_format_info *format = fb->format;
262 struct drm_gem_dma_object *gem;
263 u32 dx, dy, src_x, src_y;
264 dma_addr_t dma_addr;
265 u32 ch_base;
266 int i;
267
268 ch_base = sun8i_channel_base(mixer, channel);
269
270 /* Adjust x and y to be dividable by subsampling factor */
271 src_x = (state->src.x1 >> 16) & ~(format->hsub - 1);
272 src_y = (state->src.y1 >> 16) & ~(format->vsub - 1);
273
274 for (i = 0; i < format->num_planes; i++) {
275 /* Get the physical address of the buffer in memory */
276 gem = drm_fb_dma_get_gem_obj(fb, i);
277
278 DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->dma_addr);
279
280 /* Compute the start of the displayed memory */
281 dma_addr = gem->dma_addr + fb->offsets[i];
282
283 dx = src_x;
284 dy = src_y;
285
286 if (i > 0) {
287 dx /= format->hsub;
288 dy /= format->vsub;
289 }
290
291 /* Fixup framebuffer address for src coordinates */
292 dma_addr += dx * format->cpp[i];
293 dma_addr += dy * fb->pitches[i];
294
295 /* Set the line width */
296 DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n",
297 i + 1, fb->pitches[i]);
298 regmap_write(mixer->engine.regs,
299 SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch_base,
300 overlay, i),
301 fb->pitches[i]);
302
303 DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n",
304 i + 1, &dma_addr);
305
306 regmap_write(mixer->engine.regs,
307 SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch_base,
308 overlay, i),
309 lower_32_bits(dma_addr));
310 }
311
312 return 0;
313}
314
315static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
316 struct drm_atomic_state *state)
317{
318 struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
319 plane);
320 struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
321 struct drm_crtc *crtc = new_plane_state->crtc;
322 struct drm_crtc_state *crtc_state;
323 int min_scale, max_scale;
324
325 if (!crtc)
326 return 0;
327
328 crtc_state = drm_atomic_get_existing_crtc_state(state,
329 crtc);
330 if (WARN_ON(!crtc_state))
331 return -EINVAL;
332
333 min_scale = DRM_PLANE_NO_SCALING;
334 max_scale = DRM_PLANE_NO_SCALING;
335
336 if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
337 min_scale = SUN8I_VI_SCALER_SCALE_MIN;
338 max_scale = SUN8I_VI_SCALER_SCALE_MAX;
339 }
340
341 return drm_atomic_helper_check_plane_state(new_plane_state,
342 crtc_state,
343 min_scale, max_scale,
344 true, true);
345}
346
347static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
348 struct drm_atomic_state *state)
349{
350 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
351 plane);
352 struct sun8i_layer *layer = plane_to_sun8i_layer(plane);
353 unsigned int zpos = new_state->normalized_zpos;
354 struct sun8i_mixer *mixer = layer->mixer;
355
356 if (!new_state->crtc || !new_state->visible)
357 return;
358
359 sun8i_vi_layer_update_coord(mixer, layer->channel,
360 layer->overlay, plane, zpos);
361 sun8i_vi_layer_update_alpha(mixer, layer->channel,
362 layer->overlay, plane);
363 sun8i_vi_layer_update_formats(mixer, layer->channel,
364 layer->overlay, plane);
365 sun8i_vi_layer_update_buffer(mixer, layer->channel,
366 layer->overlay, plane);
367}
368
369static const struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
370 .atomic_check = sun8i_vi_layer_atomic_check,
371 .atomic_update = sun8i_vi_layer_atomic_update,
372};
373
374static const struct drm_plane_funcs sun8i_vi_layer_funcs = {
375 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
376 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
377 .destroy = drm_plane_cleanup,
378 .disable_plane = drm_atomic_helper_disable_plane,
379 .reset = drm_atomic_helper_plane_reset,
380 .update_plane = drm_atomic_helper_update_plane,
381};
382
383/*
384 * While DE2 VI layer supports same RGB formats as UI layer, alpha
385 * channel is ignored. This structure lists all unique variants
386 * where alpha channel is replaced with "don't care" (X) channel.
387 */
388static const u32 sun8i_vi_layer_formats[] = {
389 DRM_FORMAT_BGR565,
390 DRM_FORMAT_BGR888,
391 DRM_FORMAT_BGRX4444,
392 DRM_FORMAT_BGRX5551,
393 DRM_FORMAT_BGRX8888,
394 DRM_FORMAT_RGB565,
395 DRM_FORMAT_RGB888,
396 DRM_FORMAT_RGBX4444,
397 DRM_FORMAT_RGBX5551,
398 DRM_FORMAT_RGBX8888,
399 DRM_FORMAT_XBGR1555,
400 DRM_FORMAT_XBGR4444,
401 DRM_FORMAT_XBGR8888,
402 DRM_FORMAT_XRGB1555,
403 DRM_FORMAT_XRGB4444,
404 DRM_FORMAT_XRGB8888,
405
406 DRM_FORMAT_NV16,
407 DRM_FORMAT_NV12,
408 DRM_FORMAT_NV21,
409 DRM_FORMAT_NV61,
410 DRM_FORMAT_UYVY,
411 DRM_FORMAT_VYUY,
412 DRM_FORMAT_YUYV,
413 DRM_FORMAT_YVYU,
414 DRM_FORMAT_YUV411,
415 DRM_FORMAT_YUV420,
416 DRM_FORMAT_YUV422,
417 DRM_FORMAT_YVU411,
418 DRM_FORMAT_YVU420,
419 DRM_FORMAT_YVU422,
420};
421
422static const u32 sun8i_vi_layer_de3_formats[] = {
423 DRM_FORMAT_ABGR1555,
424 DRM_FORMAT_ABGR2101010,
425 DRM_FORMAT_ABGR4444,
426 DRM_FORMAT_ABGR8888,
427 DRM_FORMAT_ARGB1555,
428 DRM_FORMAT_ARGB2101010,
429 DRM_FORMAT_ARGB4444,
430 DRM_FORMAT_ARGB8888,
431 DRM_FORMAT_BGR565,
432 DRM_FORMAT_BGR888,
433 DRM_FORMAT_BGRA1010102,
434 DRM_FORMAT_BGRA5551,
435 DRM_FORMAT_BGRA4444,
436 DRM_FORMAT_BGRA8888,
437 DRM_FORMAT_BGRX8888,
438 DRM_FORMAT_RGB565,
439 DRM_FORMAT_RGB888,
440 DRM_FORMAT_RGBA1010102,
441 DRM_FORMAT_RGBA4444,
442 DRM_FORMAT_RGBA5551,
443 DRM_FORMAT_RGBA8888,
444 DRM_FORMAT_RGBX8888,
445 DRM_FORMAT_XBGR8888,
446 DRM_FORMAT_XRGB8888,
447
448 DRM_FORMAT_NV16,
449 DRM_FORMAT_NV12,
450 DRM_FORMAT_NV21,
451 DRM_FORMAT_NV61,
452 DRM_FORMAT_P010,
453 DRM_FORMAT_P210,
454 DRM_FORMAT_UYVY,
455 DRM_FORMAT_VYUY,
456 DRM_FORMAT_YUYV,
457 DRM_FORMAT_YVYU,
458 DRM_FORMAT_YUV411,
459 DRM_FORMAT_YUV420,
460 DRM_FORMAT_YUV422,
461 DRM_FORMAT_YVU411,
462 DRM_FORMAT_YVU420,
463 DRM_FORMAT_YVU422,
464};
465
466static const uint64_t sun8i_layer_modifiers[] = {
467 DRM_FORMAT_MOD_LINEAR,
468 DRM_FORMAT_MOD_INVALID
469};
470
471struct sun8i_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
472 struct sun8i_mixer *mixer,
473 int index)
474{
475 enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
476 u32 supported_encodings, supported_ranges;
477 unsigned int plane_cnt, format_count;
478 struct sun8i_layer *layer;
479 const u32 *formats;
480 int ret;
481
482 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
483 if (!layer)
484 return ERR_PTR(-ENOMEM);
485
486 if (mixer->cfg->is_de3) {
487 formats = sun8i_vi_layer_de3_formats;
488 format_count = ARRAY_SIZE(sun8i_vi_layer_de3_formats);
489 } else {
490 formats = sun8i_vi_layer_formats;
491 format_count = ARRAY_SIZE(sun8i_vi_layer_formats);
492 }
493
494 if (!mixer->cfg->ui_num && index == 0)
495 type = DRM_PLANE_TYPE_PRIMARY;
496
497 /* possible crtcs are set later */
498 ret = drm_universal_plane_init(drm, &layer->plane, 0,
499 &sun8i_vi_layer_funcs,
500 formats, format_count,
501 sun8i_layer_modifiers,
502 type, NULL);
503 if (ret) {
504 dev_err(drm->dev, "Couldn't initialize layer\n");
505 return ERR_PTR(ret);
506 }
507
508 plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
509
510 if (mixer->cfg->vi_num == 1 || mixer->cfg->is_de3) {
511 ret = drm_plane_create_alpha_property(&layer->plane);
512 if (ret) {
513 dev_err(drm->dev, "Couldn't add alpha property\n");
514 return ERR_PTR(ret);
515 }
516 }
517
518 ret = drm_plane_create_zpos_property(&layer->plane, index,
519 0, plane_cnt - 1);
520 if (ret) {
521 dev_err(drm->dev, "Couldn't add zpos property\n");
522 return ERR_PTR(ret);
523 }
524
525 supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) |
526 BIT(DRM_COLOR_YCBCR_BT709);
527 if (mixer->cfg->is_de3)
528 supported_encodings |= BIT(DRM_COLOR_YCBCR_BT2020);
529
530 supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
531 BIT(DRM_COLOR_YCBCR_FULL_RANGE);
532
533 ret = drm_plane_create_color_properties(&layer->plane,
534 supported_encodings,
535 supported_ranges,
536 DRM_COLOR_YCBCR_BT709,
537 DRM_COLOR_YCBCR_LIMITED_RANGE);
538 if (ret) {
539 dev_err(drm->dev, "Couldn't add encoding and range properties!\n");
540 return ERR_PTR(ret);
541 }
542
543 drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
544 layer->mixer = mixer;
545 layer->type = SUN8I_LAYER_TYPE_VI;
546 layer->channel = index;
547 layer->overlay = 0;
548
549 return layer;
550}