Loading...
Note: File does not exist in v4.6.
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_crtc.h>
9#include <drm/drm_fb_cma_helper.h>
10#include <drm/drm_gem_cma_helper.h>
11#include <drm/drm_gem_framebuffer_helper.h>
12#include <drm/drm_plane_helper.h>
13#include <drm/drm_probe_helper.h>
14
15#include "sun8i_csc.h"
16#include "sun8i_mixer.h"
17#include "sun8i_vi_layer.h"
18#include "sun8i_vi_scaler.h"
19
20static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
21 int overlay, bool enable, unsigned int zpos,
22 unsigned int old_zpos)
23{
24 u32 val, bld_base, ch_base;
25
26 bld_base = sun8i_blender_base(mixer);
27 ch_base = sun8i_channel_base(mixer, channel);
28
29 DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n",
30 enable ? "En" : "Dis", channel, overlay);
31
32 if (enable)
33 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
34 else
35 val = 0;
36
37 regmap_update_bits(mixer->engine.regs,
38 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
39 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);
40
41 if (!enable || zpos != old_zpos) {
42 regmap_update_bits(mixer->engine.regs,
43 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
44 SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
45 0);
46
47 regmap_update_bits(mixer->engine.regs,
48 SUN8I_MIXER_BLEND_ROUTE(bld_base),
49 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
50 0);
51 }
52
53 if (enable) {
54 val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
55
56 regmap_update_bits(mixer->engine.regs,
57 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
58 val, val);
59
60 val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
61
62 regmap_update_bits(mixer->engine.regs,
63 SUN8I_MIXER_BLEND_ROUTE(bld_base),
64 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
65 val);
66 }
67}
68
69static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
70 int overlay, struct drm_plane *plane,
71 unsigned int zpos)
72{
73 struct drm_plane_state *state = plane->state;
74 const struct drm_format_info *format = state->fb->format;
75 u32 src_w, src_h, dst_w, dst_h;
76 u32 bld_base, ch_base;
77 u32 outsize, insize;
78 u32 hphase, vphase;
79 u32 hn = 0, hm = 0;
80 u32 vn = 0, vm = 0;
81 bool subsampled;
82
83 DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n",
84 channel, overlay);
85
86 bld_base = sun8i_blender_base(mixer);
87 ch_base = sun8i_channel_base(mixer, channel);
88
89 src_w = drm_rect_width(&state->src) >> 16;
90 src_h = drm_rect_height(&state->src) >> 16;
91 dst_w = drm_rect_width(&state->dst);
92 dst_h = drm_rect_height(&state->dst);
93
94 hphase = state->src.x1 & 0xffff;
95 vphase = state->src.y1 & 0xffff;
96
97 /* make coordinates dividable by subsampling factor */
98 if (format->hsub > 1) {
99 int mask, remainder;
100
101 mask = format->hsub - 1;
102 remainder = (state->src.x1 >> 16) & mask;
103 src_w = (src_w + remainder) & ~mask;
104 hphase += remainder << 16;
105 }
106
107 if (format->vsub > 1) {
108 int mask, remainder;
109
110 mask = format->vsub - 1;
111 remainder = (state->src.y1 >> 16) & mask;
112 src_h = (src_h + remainder) & ~mask;
113 vphase += remainder << 16;
114 }
115
116 insize = SUN8I_MIXER_SIZE(src_w, src_h);
117 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
118
119 /* Set height and width */
120 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
121 (state->src.x1 >> 16) & ~(format->hsub - 1),
122 (state->src.y1 >> 16) & ~(format->vsub - 1));
123 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
124 regmap_write(mixer->engine.regs,
125 SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch_base, overlay),
126 insize);
127 regmap_write(mixer->engine.regs,
128 SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch_base),
129 insize);
130
131 /*
132 * Scaler must be enabled for subsampled formats, so it scales
133 * chroma to same size as luma.
134 */
135 subsampled = format->hsub > 1 || format->vsub > 1;
136
137 if (insize != outsize || subsampled || hphase || vphase) {
138 unsigned int scanline, required;
139 struct drm_display_mode *mode;
140 u32 hscale, vscale, fps;
141 u64 ability;
142
143 DRM_DEBUG_DRIVER("HW scaling is enabled\n");
144
145 mode = &plane->state->crtc->state->mode;
146 fps = (mode->clock * 1000) / (mode->vtotal * mode->htotal);
147 ability = clk_get_rate(mixer->mod_clk);
148 /* BSP algorithm assumes 80% efficiency of VI scaler unit */
149 ability *= 80;
150 do_div(ability, mode->vdisplay * fps * max(src_w, dst_w));
151
152 required = src_h * 100 / dst_h;
153
154 if (ability < required) {
155 DRM_DEBUG_DRIVER("Using vertical coarse scaling\n");
156 vm = src_h;
157 vn = (u32)ability * dst_h / 100;
158 src_h = vn;
159 }
160
161 /* it seems that every RGB scaler has buffer for 2048 pixels */
162 scanline = subsampled ? mixer->cfg->scanline_yuv : 2048;
163
164 if (src_w > scanline) {
165 DRM_DEBUG_DRIVER("Using horizontal coarse scaling\n");
166 hm = src_w;
167 hn = scanline;
168 src_w = hn;
169 }
170
171 hscale = (src_w << 16) / dst_w;
172 vscale = (src_h << 16) / dst_h;
173
174 sun8i_vi_scaler_setup(mixer, channel, src_w, src_h, dst_w,
175 dst_h, hscale, vscale, hphase, vphase,
176 format);
177 sun8i_vi_scaler_enable(mixer, channel, true);
178 } else {
179 DRM_DEBUG_DRIVER("HW scaling is not needed\n");
180 sun8i_vi_scaler_enable(mixer, channel, false);
181 }
182
183 regmap_write(mixer->engine.regs,
184 SUN8I_MIXER_CHAN_VI_HDS_Y(ch_base),
185 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
186 SUN8I_MIXER_CHAN_VI_DS_M(hm));
187 regmap_write(mixer->engine.regs,
188 SUN8I_MIXER_CHAN_VI_HDS_UV(ch_base),
189 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
190 SUN8I_MIXER_CHAN_VI_DS_M(hm));
191 regmap_write(mixer->engine.regs,
192 SUN8I_MIXER_CHAN_VI_VDS_Y(ch_base),
193 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
194 SUN8I_MIXER_CHAN_VI_DS_M(vm));
195 regmap_write(mixer->engine.regs,
196 SUN8I_MIXER_CHAN_VI_VDS_UV(ch_base),
197 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
198 SUN8I_MIXER_CHAN_VI_DS_M(vm));
199
200 /* Set base coordinates */
201 DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
202 state->dst.x1, state->dst.y1);
203 DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
204 regmap_write(mixer->engine.regs,
205 SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
206 SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
207 regmap_write(mixer->engine.regs,
208 SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
209 outsize);
210
211 return 0;
212}
213
214static u32 sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format)
215{
216 if (!format->is_yuv)
217 return SUN8I_CSC_MODE_OFF;
218
219 switch (format->format) {
220 case DRM_FORMAT_YVU411:
221 case DRM_FORMAT_YVU420:
222 case DRM_FORMAT_YVU422:
223 case DRM_FORMAT_YVU444:
224 return SUN8I_CSC_MODE_YVU2RGB;
225 default:
226 return SUN8I_CSC_MODE_YUV2RGB;
227 }
228}
229
230static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
231 int overlay, struct drm_plane *plane)
232{
233 struct drm_plane_state *state = plane->state;
234 u32 val, ch_base, csc_mode, hw_fmt;
235 const struct drm_format_info *fmt;
236 int ret;
237
238 ch_base = sun8i_channel_base(mixer, channel);
239
240 fmt = state->fb->format;
241 ret = sun8i_mixer_drm_format_to_hw(fmt->format, &hw_fmt);
242 if (ret) {
243 DRM_DEBUG_DRIVER("Invalid format\n");
244 return ret;
245 }
246
247 val = hw_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
248 regmap_update_bits(mixer->engine.regs,
249 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
250 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);
251
252 csc_mode = sun8i_vi_layer_get_csc_mode(fmt);
253 if (csc_mode != SUN8I_CSC_MODE_OFF) {
254 sun8i_csc_set_ccsc_coefficients(mixer, channel, csc_mode,
255 state->color_encoding,
256 state->color_range);
257 sun8i_csc_enable_ccsc(mixer, channel, true);
258 } else {
259 sun8i_csc_enable_ccsc(mixer, channel, false);
260 }
261
262 if (!fmt->is_yuv)
263 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE;
264 else
265 val = 0;
266
267 regmap_update_bits(mixer->engine.regs,
268 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
269 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val);
270
271 /* It seems that YUV formats use global alpha setting. */
272 if (mixer->cfg->is_de3)
273 regmap_update_bits(mixer->engine.regs,
274 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base,
275 overlay),
276 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK,
277 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA(0xff));
278
279 return 0;
280}
281
282static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
283 int overlay, struct drm_plane *plane)
284{
285 struct drm_plane_state *state = plane->state;
286 struct drm_framebuffer *fb = state->fb;
287 const struct drm_format_info *format = fb->format;
288 struct drm_gem_cma_object *gem;
289 u32 dx, dy, src_x, src_y;
290 dma_addr_t paddr;
291 u32 ch_base;
292 int i;
293
294 ch_base = sun8i_channel_base(mixer, channel);
295
296 /* Adjust x and y to be dividable by subsampling factor */
297 src_x = (state->src.x1 >> 16) & ~(format->hsub - 1);
298 src_y = (state->src.y1 >> 16) & ~(format->vsub - 1);
299
300 for (i = 0; i < format->num_planes; i++) {
301 /* Get the physical address of the buffer in memory */
302 gem = drm_fb_cma_get_gem_obj(fb, i);
303
304 DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
305
306 /* Compute the start of the displayed memory */
307 paddr = gem->paddr + fb->offsets[i];
308
309 dx = src_x;
310 dy = src_y;
311
312 if (i > 0) {
313 dx /= format->hsub;
314 dy /= format->vsub;
315 }
316
317 /* Fixup framebuffer address for src coordinates */
318 paddr += dx * format->cpp[i];
319 paddr += dy * fb->pitches[i];
320
321 /* Set the line width */
322 DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n",
323 i + 1, fb->pitches[i]);
324 regmap_write(mixer->engine.regs,
325 SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch_base,
326 overlay, i),
327 fb->pitches[i]);
328
329 DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n",
330 i + 1, &paddr);
331
332 regmap_write(mixer->engine.regs,
333 SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch_base,
334 overlay, i),
335 lower_32_bits(paddr));
336 }
337
338 return 0;
339}
340
341static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
342 struct drm_plane_state *state)
343{
344 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
345 struct drm_crtc *crtc = state->crtc;
346 struct drm_crtc_state *crtc_state;
347 int min_scale, max_scale;
348
349 if (!crtc)
350 return 0;
351
352 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
353 if (WARN_ON(!crtc_state))
354 return -EINVAL;
355
356 min_scale = DRM_PLANE_HELPER_NO_SCALING;
357 max_scale = DRM_PLANE_HELPER_NO_SCALING;
358
359 if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
360 min_scale = SUN8I_VI_SCALER_SCALE_MIN;
361 max_scale = SUN8I_VI_SCALER_SCALE_MAX;
362 }
363
364 return drm_atomic_helper_check_plane_state(state, crtc_state,
365 min_scale, max_scale,
366 true, true);
367}
368
369static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
370 struct drm_plane_state *old_state)
371{
372 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
373 unsigned int old_zpos = old_state->normalized_zpos;
374 struct sun8i_mixer *mixer = layer->mixer;
375
376 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
377 old_zpos);
378}
379
380static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
381 struct drm_plane_state *old_state)
382{
383 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
384 unsigned int zpos = plane->state->normalized_zpos;
385 unsigned int old_zpos = old_state->normalized_zpos;
386 struct sun8i_mixer *mixer = layer->mixer;
387
388 if (!plane->state->visible) {
389 sun8i_vi_layer_enable(mixer, layer->channel,
390 layer->overlay, false, 0, old_zpos);
391 return;
392 }
393
394 sun8i_vi_layer_update_coord(mixer, layer->channel,
395 layer->overlay, plane, zpos);
396 sun8i_vi_layer_update_formats(mixer, layer->channel,
397 layer->overlay, plane);
398 sun8i_vi_layer_update_buffer(mixer, layer->channel,
399 layer->overlay, plane);
400 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay,
401 true, zpos, old_zpos);
402}
403
404static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
405 .prepare_fb = drm_gem_fb_prepare_fb,
406 .atomic_check = sun8i_vi_layer_atomic_check,
407 .atomic_disable = sun8i_vi_layer_atomic_disable,
408 .atomic_update = sun8i_vi_layer_atomic_update,
409};
410
411static const struct drm_plane_funcs sun8i_vi_layer_funcs = {
412 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
413 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
414 .destroy = drm_plane_cleanup,
415 .disable_plane = drm_atomic_helper_disable_plane,
416 .reset = drm_atomic_helper_plane_reset,
417 .update_plane = drm_atomic_helper_update_plane,
418};
419
420/*
421 * While DE2 VI layer supports same RGB formats as UI layer, alpha
422 * channel is ignored. This structure lists all unique variants
423 * where alpha channel is replaced with "don't care" (X) channel.
424 */
425static const u32 sun8i_vi_layer_formats[] = {
426 DRM_FORMAT_BGR565,
427 DRM_FORMAT_BGR888,
428 DRM_FORMAT_BGRX4444,
429 DRM_FORMAT_BGRX5551,
430 DRM_FORMAT_BGRX8888,
431 DRM_FORMAT_RGB565,
432 DRM_FORMAT_RGB888,
433 DRM_FORMAT_RGBX4444,
434 DRM_FORMAT_RGBX5551,
435 DRM_FORMAT_RGBX8888,
436 DRM_FORMAT_XBGR1555,
437 DRM_FORMAT_XBGR4444,
438 DRM_FORMAT_XBGR8888,
439 DRM_FORMAT_XRGB1555,
440 DRM_FORMAT_XRGB4444,
441 DRM_FORMAT_XRGB8888,
442
443 DRM_FORMAT_NV16,
444 DRM_FORMAT_NV12,
445 DRM_FORMAT_NV21,
446 DRM_FORMAT_NV61,
447 DRM_FORMAT_UYVY,
448 DRM_FORMAT_VYUY,
449 DRM_FORMAT_YUYV,
450 DRM_FORMAT_YVYU,
451 DRM_FORMAT_YUV411,
452 DRM_FORMAT_YUV420,
453 DRM_FORMAT_YUV422,
454 DRM_FORMAT_YVU411,
455 DRM_FORMAT_YVU420,
456 DRM_FORMAT_YVU422,
457};
458
459static const u32 sun8i_vi_layer_de3_formats[] = {
460 DRM_FORMAT_ABGR1555,
461 DRM_FORMAT_ABGR2101010,
462 DRM_FORMAT_ABGR4444,
463 DRM_FORMAT_ABGR8888,
464 DRM_FORMAT_ARGB1555,
465 DRM_FORMAT_ARGB2101010,
466 DRM_FORMAT_ARGB4444,
467 DRM_FORMAT_ARGB8888,
468 DRM_FORMAT_BGR565,
469 DRM_FORMAT_BGR888,
470 DRM_FORMAT_BGRA1010102,
471 DRM_FORMAT_BGRA5551,
472 DRM_FORMAT_BGRA4444,
473 DRM_FORMAT_BGRA8888,
474 DRM_FORMAT_BGRX8888,
475 DRM_FORMAT_RGB565,
476 DRM_FORMAT_RGB888,
477 DRM_FORMAT_RGBA1010102,
478 DRM_FORMAT_RGBA4444,
479 DRM_FORMAT_RGBA5551,
480 DRM_FORMAT_RGBA8888,
481 DRM_FORMAT_RGBX8888,
482 DRM_FORMAT_XBGR8888,
483 DRM_FORMAT_XRGB8888,
484
485 DRM_FORMAT_NV16,
486 DRM_FORMAT_NV12,
487 DRM_FORMAT_NV21,
488 DRM_FORMAT_NV61,
489 DRM_FORMAT_P010,
490 DRM_FORMAT_P210,
491 DRM_FORMAT_UYVY,
492 DRM_FORMAT_VYUY,
493 DRM_FORMAT_YUYV,
494 DRM_FORMAT_YVYU,
495 DRM_FORMAT_YUV411,
496 DRM_FORMAT_YUV420,
497 DRM_FORMAT_YUV422,
498 DRM_FORMAT_YVU411,
499 DRM_FORMAT_YVU420,
500 DRM_FORMAT_YVU422,
501};
502
503struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
504 struct sun8i_mixer *mixer,
505 int index)
506{
507 u32 supported_encodings, supported_ranges;
508 unsigned int plane_cnt, format_count;
509 struct sun8i_vi_layer *layer;
510 const u32 *formats;
511 int ret;
512
513 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
514 if (!layer)
515 return ERR_PTR(-ENOMEM);
516
517 if (mixer->cfg->is_de3) {
518 formats = sun8i_vi_layer_de3_formats;
519 format_count = ARRAY_SIZE(sun8i_vi_layer_de3_formats);
520 } else {
521 formats = sun8i_vi_layer_formats;
522 format_count = ARRAY_SIZE(sun8i_vi_layer_formats);
523 }
524
525 /* possible crtcs are set later */
526 ret = drm_universal_plane_init(drm, &layer->plane, 0,
527 &sun8i_vi_layer_funcs,
528 formats, format_count,
529 NULL, DRM_PLANE_TYPE_OVERLAY, NULL);
530 if (ret) {
531 dev_err(drm->dev, "Couldn't initialize layer\n");
532 return ERR_PTR(ret);
533 }
534
535 plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
536
537 ret = drm_plane_create_zpos_property(&layer->plane, index,
538 0, plane_cnt - 1);
539 if (ret) {
540 dev_err(drm->dev, "Couldn't add zpos property\n");
541 return ERR_PTR(ret);
542 }
543
544 supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) |
545 BIT(DRM_COLOR_YCBCR_BT709);
546
547 supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
548 BIT(DRM_COLOR_YCBCR_FULL_RANGE);
549
550 ret = drm_plane_create_color_properties(&layer->plane,
551 supported_encodings,
552 supported_ranges,
553 DRM_COLOR_YCBCR_BT709,
554 DRM_COLOR_YCBCR_LIMITED_RANGE);
555 if (ret) {
556 dev_err(drm->dev, "Couldn't add encoding and range properties!\n");
557 return ERR_PTR(ret);
558 }
559
560 drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
561 layer->mixer = mixer;
562 layer->channel = index;
563 layer->overlay = 0;
564
565 return layer;
566}