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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_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_vi_layer.h"
16#include "sun8i_mixer.h"
17#include "sun8i_vi_scaler.h"
18
19static void sun8i_vi_layer_enable(struct sun8i_mixer *mixer, int channel,
20 int overlay, bool enable, unsigned int zpos,
21 unsigned int old_zpos)
22{
23 u32 val, bld_base, ch_base;
24
25 bld_base = sun8i_blender_base(mixer);
26 ch_base = sun8i_channel_base(mixer, channel);
27
28 DRM_DEBUG_DRIVER("%sabling VI channel %d overlay %d\n",
29 enable ? "En" : "Dis", channel, overlay);
30
31 if (enable)
32 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN;
33 else
34 val = 0;
35
36 regmap_update_bits(mixer->engine.regs,
37 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
38 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_EN, val);
39
40 if (!enable || zpos != old_zpos) {
41 regmap_update_bits(mixer->engine.regs,
42 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
43 SUN8I_MIXER_BLEND_PIPE_CTL_EN(old_zpos),
44 0);
45
46 regmap_update_bits(mixer->engine.regs,
47 SUN8I_MIXER_BLEND_ROUTE(bld_base),
48 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(old_zpos),
49 0);
50 }
51
52 if (enable) {
53 val = SUN8I_MIXER_BLEND_PIPE_CTL_EN(zpos);
54
55 regmap_update_bits(mixer->engine.regs,
56 SUN8I_MIXER_BLEND_PIPE_CTL(bld_base),
57 val, val);
58
59 val = channel << SUN8I_MIXER_BLEND_ROUTE_PIPE_SHIFT(zpos);
60
61 regmap_update_bits(mixer->engine.regs,
62 SUN8I_MIXER_BLEND_ROUTE(bld_base),
63 SUN8I_MIXER_BLEND_ROUTE_PIPE_MSK(zpos),
64 val);
65 }
66}
67
68static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
69 int overlay, struct drm_plane *plane,
70 unsigned int zpos)
71{
72 struct drm_plane_state *state = plane->state;
73 const struct drm_format_info *format = state->fb->format;
74 u32 src_w, src_h, dst_w, dst_h;
75 u32 bld_base, ch_base;
76 u32 outsize, insize;
77 u32 hphase, vphase;
78 u32 hn = 0, hm = 0;
79 u32 vn = 0, vm = 0;
80 bool subsampled;
81
82 DRM_DEBUG_DRIVER("Updating VI channel %d overlay %d\n",
83 channel, overlay);
84
85 bld_base = sun8i_blender_base(mixer);
86 ch_base = sun8i_channel_base(mixer, channel);
87
88 src_w = drm_rect_width(&state->src) >> 16;
89 src_h = drm_rect_height(&state->src) >> 16;
90 dst_w = drm_rect_width(&state->dst);
91 dst_h = drm_rect_height(&state->dst);
92
93 hphase = state->src.x1 & 0xffff;
94 vphase = state->src.y1 & 0xffff;
95
96 /* make coordinates dividable by subsampling factor */
97 if (format->hsub > 1) {
98 int mask, remainder;
99
100 mask = format->hsub - 1;
101 remainder = (state->src.x1 >> 16) & mask;
102 src_w = (src_w + remainder) & ~mask;
103 hphase += remainder << 16;
104 }
105
106 if (format->vsub > 1) {
107 int mask, remainder;
108
109 mask = format->vsub - 1;
110 remainder = (state->src.y1 >> 16) & mask;
111 src_h = (src_h + remainder) & ~mask;
112 vphase += remainder << 16;
113 }
114
115 insize = SUN8I_MIXER_SIZE(src_w, src_h);
116 outsize = SUN8I_MIXER_SIZE(dst_w, dst_h);
117
118 /* Set height and width */
119 DRM_DEBUG_DRIVER("Layer source offset X: %d Y: %d\n",
120 (state->src.x1 >> 16) & ~(format->hsub - 1),
121 (state->src.y1 >> 16) & ~(format->vsub - 1));
122 DRM_DEBUG_DRIVER("Layer source size W: %d H: %d\n", src_w, src_h);
123 regmap_write(mixer->engine.regs,
124 SUN8I_MIXER_CHAN_VI_LAYER_SIZE(ch_base, overlay),
125 insize);
126 regmap_write(mixer->engine.regs,
127 SUN8I_MIXER_CHAN_VI_OVL_SIZE(ch_base),
128 insize);
129
130 /*
131 * Scaler must be enabled for subsampled formats, so it scales
132 * chroma to same size as luma.
133 */
134 subsampled = format->hsub > 1 || format->vsub > 1;
135
136 if (insize != outsize || subsampled || hphase || vphase) {
137 unsigned int scanline, required;
138 struct drm_display_mode *mode;
139 u32 hscale, vscale, fps;
140 u64 ability;
141
142 DRM_DEBUG_DRIVER("HW scaling is enabled\n");
143
144 mode = &plane->state->crtc->state->mode;
145 fps = (mode->clock * 1000) / (mode->vtotal * mode->htotal);
146 ability = clk_get_rate(mixer->mod_clk);
147 /* BSP algorithm assumes 80% efficiency of VI scaler unit */
148 ability *= 80;
149 do_div(ability, mode->vdisplay * fps * max(src_w, dst_w));
150
151 required = src_h * 100 / dst_h;
152
153 if (ability < required) {
154 DRM_DEBUG_DRIVER("Using vertical coarse scaling\n");
155 vm = src_h;
156 vn = (u32)ability * dst_h / 100;
157 src_h = vn;
158 }
159
160 /* it seems that every RGB scaler has buffer for 2048 pixels */
161 scanline = subsampled ? mixer->cfg->scanline_yuv : 2048;
162
163 if (src_w > scanline) {
164 DRM_DEBUG_DRIVER("Using horizontal coarse scaling\n");
165 hm = src_w;
166 hn = scanline;
167 src_w = hn;
168 }
169
170 hscale = (src_w << 16) / dst_w;
171 vscale = (src_h << 16) / dst_h;
172
173 sun8i_vi_scaler_setup(mixer, channel, src_w, src_h, dst_w,
174 dst_h, hscale, vscale, hphase, vphase,
175 format);
176 sun8i_vi_scaler_enable(mixer, channel, true);
177 } else {
178 DRM_DEBUG_DRIVER("HW scaling is not needed\n");
179 sun8i_vi_scaler_enable(mixer, channel, false);
180 }
181
182 regmap_write(mixer->engine.regs,
183 SUN8I_MIXER_CHAN_VI_HDS_Y(ch_base),
184 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
185 SUN8I_MIXER_CHAN_VI_DS_M(hm));
186 regmap_write(mixer->engine.regs,
187 SUN8I_MIXER_CHAN_VI_HDS_UV(ch_base),
188 SUN8I_MIXER_CHAN_VI_DS_N(hn) |
189 SUN8I_MIXER_CHAN_VI_DS_M(hm));
190 regmap_write(mixer->engine.regs,
191 SUN8I_MIXER_CHAN_VI_VDS_Y(ch_base),
192 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
193 SUN8I_MIXER_CHAN_VI_DS_M(vm));
194 regmap_write(mixer->engine.regs,
195 SUN8I_MIXER_CHAN_VI_VDS_UV(ch_base),
196 SUN8I_MIXER_CHAN_VI_DS_N(vn) |
197 SUN8I_MIXER_CHAN_VI_DS_M(vm));
198
199 /* Set base coordinates */
200 DRM_DEBUG_DRIVER("Layer destination coordinates X: %d Y: %d\n",
201 state->dst.x1, state->dst.y1);
202 DRM_DEBUG_DRIVER("Layer destination size W: %d H: %d\n", dst_w, dst_h);
203 regmap_write(mixer->engine.regs,
204 SUN8I_MIXER_BLEND_ATTR_COORD(bld_base, zpos),
205 SUN8I_MIXER_COORD(state->dst.x1, state->dst.y1));
206 regmap_write(mixer->engine.regs,
207 SUN8I_MIXER_BLEND_ATTR_INSIZE(bld_base, zpos),
208 outsize);
209
210 return 0;
211}
212
213static int sun8i_vi_layer_update_formats(struct sun8i_mixer *mixer, int channel,
214 int overlay, struct drm_plane *plane)
215{
216 struct drm_plane_state *state = plane->state;
217 const struct de2_fmt_info *fmt_info;
218 u32 val, ch_base;
219
220 ch_base = sun8i_channel_base(mixer, channel);
221
222 fmt_info = sun8i_mixer_format_info(state->fb->format->format);
223 if (!fmt_info) {
224 DRM_DEBUG_DRIVER("Invalid format\n");
225 return -EINVAL;
226 }
227
228 val = fmt_info->de2_fmt << SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_OFFSET;
229 regmap_update_bits(mixer->engine.regs,
230 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
231 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_FBFMT_MASK, val);
232
233 if (fmt_info->csc != SUN8I_CSC_MODE_OFF) {
234 sun8i_csc_set_ccsc_coefficients(mixer, channel, fmt_info->csc,
235 state->color_encoding,
236 state->color_range);
237 sun8i_csc_enable_ccsc(mixer, channel, true);
238 } else {
239 sun8i_csc_enable_ccsc(mixer, channel, false);
240 }
241
242 if (fmt_info->rgb)
243 val = SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE;
244 else
245 val = 0;
246
247 regmap_update_bits(mixer->engine.regs,
248 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base, overlay),
249 SUN8I_MIXER_CHAN_VI_LAYER_ATTR_RGB_MODE, val);
250
251 /* It seems that YUV formats use global alpha setting. */
252 if (mixer->cfg->is_de3)
253 regmap_update_bits(mixer->engine.regs,
254 SUN8I_MIXER_CHAN_VI_LAYER_ATTR(ch_base,
255 overlay),
256 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA_MASK,
257 SUN50I_MIXER_CHAN_VI_LAYER_ATTR_ALPHA(0xff));
258
259 return 0;
260}
261
262static int sun8i_vi_layer_update_buffer(struct sun8i_mixer *mixer, int channel,
263 int overlay, struct drm_plane *plane)
264{
265 struct drm_plane_state *state = plane->state;
266 struct drm_framebuffer *fb = state->fb;
267 const struct drm_format_info *format = fb->format;
268 struct drm_gem_cma_object *gem;
269 u32 dx, dy, src_x, src_y;
270 dma_addr_t paddr;
271 u32 ch_base;
272 int i;
273
274 ch_base = sun8i_channel_base(mixer, channel);
275
276 /* Adjust x and y to be dividable by subsampling factor */
277 src_x = (state->src.x1 >> 16) & ~(format->hsub - 1);
278 src_y = (state->src.y1 >> 16) & ~(format->vsub - 1);
279
280 for (i = 0; i < format->num_planes; i++) {
281 /* Get the physical address of the buffer in memory */
282 gem = drm_fb_cma_get_gem_obj(fb, i);
283
284 DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
285
286 /* Compute the start of the displayed memory */
287 paddr = gem->paddr + fb->offsets[i];
288
289 dx = src_x;
290 dy = src_y;
291
292 if (i > 0) {
293 dx /= format->hsub;
294 dy /= format->vsub;
295 }
296
297 /* Fixup framebuffer address for src coordinates */
298 paddr += dx * format->cpp[i];
299 paddr += dy * fb->pitches[i];
300
301 /* Set the line width */
302 DRM_DEBUG_DRIVER("Layer %d. line width: %d bytes\n",
303 i + 1, fb->pitches[i]);
304 regmap_write(mixer->engine.regs,
305 SUN8I_MIXER_CHAN_VI_LAYER_PITCH(ch_base,
306 overlay, i),
307 fb->pitches[i]);
308
309 DRM_DEBUG_DRIVER("Setting %d. buffer address to %pad\n",
310 i + 1, &paddr);
311
312 regmap_write(mixer->engine.regs,
313 SUN8I_MIXER_CHAN_VI_LAYER_TOP_LADDR(ch_base,
314 overlay, i),
315 lower_32_bits(paddr));
316 }
317
318 return 0;
319}
320
321static int sun8i_vi_layer_atomic_check(struct drm_plane *plane,
322 struct drm_plane_state *state)
323{
324 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
325 struct drm_crtc *crtc = state->crtc;
326 struct drm_crtc_state *crtc_state;
327 int min_scale, max_scale;
328
329 if (!crtc)
330 return 0;
331
332 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
333 if (WARN_ON(!crtc_state))
334 return -EINVAL;
335
336 min_scale = DRM_PLANE_HELPER_NO_SCALING;
337 max_scale = DRM_PLANE_HELPER_NO_SCALING;
338
339 if (layer->mixer->cfg->scaler_mask & BIT(layer->channel)) {
340 min_scale = SUN8I_VI_SCALER_SCALE_MIN;
341 max_scale = SUN8I_VI_SCALER_SCALE_MAX;
342 }
343
344 return drm_atomic_helper_check_plane_state(state, crtc_state,
345 min_scale, max_scale,
346 true, true);
347}
348
349static void sun8i_vi_layer_atomic_disable(struct drm_plane *plane,
350 struct drm_plane_state *old_state)
351{
352 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
353 unsigned int old_zpos = old_state->normalized_zpos;
354 struct sun8i_mixer *mixer = layer->mixer;
355
356 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay, false, 0,
357 old_zpos);
358}
359
360static void sun8i_vi_layer_atomic_update(struct drm_plane *plane,
361 struct drm_plane_state *old_state)
362{
363 struct sun8i_vi_layer *layer = plane_to_sun8i_vi_layer(plane);
364 unsigned int zpos = plane->state->normalized_zpos;
365 unsigned int old_zpos = old_state->normalized_zpos;
366 struct sun8i_mixer *mixer = layer->mixer;
367
368 if (!plane->state->visible) {
369 sun8i_vi_layer_enable(mixer, layer->channel,
370 layer->overlay, false, 0, old_zpos);
371 return;
372 }
373
374 sun8i_vi_layer_update_coord(mixer, layer->channel,
375 layer->overlay, plane, zpos);
376 sun8i_vi_layer_update_formats(mixer, layer->channel,
377 layer->overlay, plane);
378 sun8i_vi_layer_update_buffer(mixer, layer->channel,
379 layer->overlay, plane);
380 sun8i_vi_layer_enable(mixer, layer->channel, layer->overlay,
381 true, zpos, old_zpos);
382}
383
384static struct drm_plane_helper_funcs sun8i_vi_layer_helper_funcs = {
385 .prepare_fb = drm_gem_fb_prepare_fb,
386 .atomic_check = sun8i_vi_layer_atomic_check,
387 .atomic_disable = sun8i_vi_layer_atomic_disable,
388 .atomic_update = sun8i_vi_layer_atomic_update,
389};
390
391static const struct drm_plane_funcs sun8i_vi_layer_funcs = {
392 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
393 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
394 .destroy = drm_plane_cleanup,
395 .disable_plane = drm_atomic_helper_disable_plane,
396 .reset = drm_atomic_helper_plane_reset,
397 .update_plane = drm_atomic_helper_update_plane,
398};
399
400/*
401 * While all RGB formats are supported, VI planes don't support
402 * alpha blending, so there is no point having formats with alpha
403 * channel if their opaque analog exist.
404 */
405static const u32 sun8i_vi_layer_formats[] = {
406 DRM_FORMAT_ABGR1555,
407 DRM_FORMAT_ABGR4444,
408 DRM_FORMAT_ARGB1555,
409 DRM_FORMAT_ARGB4444,
410 DRM_FORMAT_BGR565,
411 DRM_FORMAT_BGR888,
412 DRM_FORMAT_BGRA5551,
413 DRM_FORMAT_BGRA4444,
414 DRM_FORMAT_BGRX8888,
415 DRM_FORMAT_RGB565,
416 DRM_FORMAT_RGB888,
417 DRM_FORMAT_RGBA4444,
418 DRM_FORMAT_RGBA5551,
419 DRM_FORMAT_RGBX8888,
420 DRM_FORMAT_XBGR8888,
421 DRM_FORMAT_XRGB8888,
422
423 DRM_FORMAT_NV16,
424 DRM_FORMAT_NV12,
425 DRM_FORMAT_NV21,
426 DRM_FORMAT_NV61,
427 DRM_FORMAT_UYVY,
428 DRM_FORMAT_VYUY,
429 DRM_FORMAT_YUYV,
430 DRM_FORMAT_YVYU,
431 DRM_FORMAT_YUV411,
432 DRM_FORMAT_YUV420,
433 DRM_FORMAT_YUV422,
434 DRM_FORMAT_YUV444,
435 DRM_FORMAT_YVU411,
436 DRM_FORMAT_YVU420,
437 DRM_FORMAT_YVU422,
438 DRM_FORMAT_YVU444,
439};
440
441struct sun8i_vi_layer *sun8i_vi_layer_init_one(struct drm_device *drm,
442 struct sun8i_mixer *mixer,
443 int index)
444{
445 u32 supported_encodings, supported_ranges;
446 struct sun8i_vi_layer *layer;
447 unsigned int plane_cnt;
448 int ret;
449
450 layer = devm_kzalloc(drm->dev, sizeof(*layer), GFP_KERNEL);
451 if (!layer)
452 return ERR_PTR(-ENOMEM);
453
454 /* possible crtcs are set later */
455 ret = drm_universal_plane_init(drm, &layer->plane, 0,
456 &sun8i_vi_layer_funcs,
457 sun8i_vi_layer_formats,
458 ARRAY_SIZE(sun8i_vi_layer_formats),
459 NULL, DRM_PLANE_TYPE_OVERLAY, NULL);
460 if (ret) {
461 dev_err(drm->dev, "Couldn't initialize layer\n");
462 return ERR_PTR(ret);
463 }
464
465 plane_cnt = mixer->cfg->ui_num + mixer->cfg->vi_num;
466
467 ret = drm_plane_create_zpos_property(&layer->plane, index,
468 0, plane_cnt - 1);
469 if (ret) {
470 dev_err(drm->dev, "Couldn't add zpos property\n");
471 return ERR_PTR(ret);
472 }
473
474 supported_encodings = BIT(DRM_COLOR_YCBCR_BT601) |
475 BIT(DRM_COLOR_YCBCR_BT709);
476
477 supported_ranges = BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
478 BIT(DRM_COLOR_YCBCR_FULL_RANGE);
479
480 ret = drm_plane_create_color_properties(&layer->plane,
481 supported_encodings,
482 supported_ranges,
483 DRM_COLOR_YCBCR_BT709,
484 DRM_COLOR_YCBCR_LIMITED_RANGE);
485 if (ret) {
486 dev_err(drm->dev, "Couldn't add encoding and range properties!\n");
487 return ERR_PTR(ret);
488 }
489
490 drm_plane_helper_add(&layer->plane, &sun8i_vi_layer_helper_funcs);
491 layer->mixer = mixer;
492 layer->channel = index;
493 layer->overlay = 0;
494
495 return layer;
496}