1 /*
2  * Copyright 2013 Ilia Mirkin
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20  * SOFTWARE.
21  *
22  * Implementation based on the pre-KMS implementation in xf86-video-nouveau,
23  * written by Arthur Huillet.
24  */
25 
26 #include <drm/drmP.h>
27 #include <drm/drm_crtc.h>
28 #include <drm/drm_fourcc.h>
29 
30 #include "nouveau_drm.h"
31 
32 #include "nouveau_bo.h"
33 #include "nouveau_connector.h"
34 #include "nouveau_display.h"
35 #include "nvreg.h"
36 
37 
38 struct nouveau_plane {
39 	struct drm_plane base;
40 	bool flip;
41 	struct nouveau_bo *cur;
42 
43 	struct {
44 		struct drm_property *colorkey;
45 		struct drm_property *contrast;
46 		struct drm_property *brightness;
47 		struct drm_property *hue;
48 		struct drm_property *saturation;
49 		struct drm_property *iturbt_709;
50 	} props;
51 
52 	int colorkey;
53 	int contrast;
54 	int brightness;
55 	int hue;
56 	int saturation;
57 	int iturbt_709;
58 
59 	void (*set_params)(struct nouveau_plane *);
60 };
61 
62 static uint32_t formats[] = {
63 	DRM_FORMAT_YUYV,
64 	DRM_FORMAT_UYVY,
65 	DRM_FORMAT_NV12,
66 };
67 
68 /* Sine can be approximated with
69  * http://en.wikipedia.org/wiki/Bhaskara_I's_sine_approximation_formula
70  * sin(x degrees) ~= 4 x (180 - x) / (40500 - x (180 - x) )
71  * Note that this only works for the range [0, 180].
72  * Also note that sin(x) == -sin(x - 180)
73  */
74 static inline int
75 sin_mul(int degrees, int factor)
76 {
77 	if (degrees > 180) {
78 		degrees -= 180;
79 		factor *= -1;
80 	}
81 	return factor * 4 * degrees * (180 - degrees) /
82 		(40500 - degrees * (180 - degrees));
83 }
84 
85 /* cos(x) = sin(x + 90) */
86 static inline int
87 cos_mul(int degrees, int factor)
88 {
89 	return sin_mul((degrees + 90) % 360, factor);
90 }
91 
92 static int
93 nv10_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
94 		  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
95 		  unsigned int crtc_w, unsigned int crtc_h,
96 		  uint32_t src_x, uint32_t src_y,
97 		  uint32_t src_w, uint32_t src_h)
98 {
99 	struct nouveau_drm *drm = nouveau_drm(plane->dev);
100 	struct nvif_object *dev = &drm->device.object;
101 	struct nouveau_plane *nv_plane =
102 		container_of(plane, struct nouveau_plane, base);
103 	struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
104 	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
105 	struct nouveau_bo *cur = nv_plane->cur;
106 	bool flip = nv_plane->flip;
107 	int soff = NV_PCRTC0_SIZE * nv_crtc->index;
108 	int soff2 = NV_PCRTC0_SIZE * !nv_crtc->index;
109 	int format, ret;
110 
111 	/* Source parameters given in 16.16 fixed point, ignore fractional. */
112 	src_x >>= 16;
113 	src_y >>= 16;
114 	src_w >>= 16;
115 	src_h >>= 16;
116 
117 	format = ALIGN(src_w * 4, 0x100);
118 
119 	if (format > 0xffff)
120 		return -ERANGE;
121 
122 	if (drm->device.info.chipset >= 0x30) {
123 		if (crtc_w < (src_w >> 1) || crtc_h < (src_h >> 1))
124 			return -ERANGE;
125 	} else {
126 		if (crtc_w < (src_w >> 3) || crtc_h < (src_h >> 3))
127 			return -ERANGE;
128 	}
129 
130 	ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
131 	if (ret)
132 		return ret;
133 
134 	nv_plane->cur = nv_fb->nvbo;
135 
136 	nvif_mask(dev, NV_PCRTC_ENGINE_CTRL + soff, NV_CRTC_FSEL_OVERLAY, NV_CRTC_FSEL_OVERLAY);
137 	nvif_mask(dev, NV_PCRTC_ENGINE_CTRL + soff2, NV_CRTC_FSEL_OVERLAY, 0);
138 
139 	nvif_wr32(dev, NV_PVIDEO_BASE(flip), 0);
140 	nvif_wr32(dev, NV_PVIDEO_OFFSET_BUFF(flip), nv_fb->nvbo->bo.offset);
141 	nvif_wr32(dev, NV_PVIDEO_SIZE_IN(flip), src_h << 16 | src_w);
142 	nvif_wr32(dev, NV_PVIDEO_POINT_IN(flip), src_y << 16 | src_x);
143 	nvif_wr32(dev, NV_PVIDEO_DS_DX(flip), (src_w << 20) / crtc_w);
144 	nvif_wr32(dev, NV_PVIDEO_DT_DY(flip), (src_h << 20) / crtc_h);
145 	nvif_wr32(dev, NV_PVIDEO_POINT_OUT(flip), crtc_y << 16 | crtc_x);
146 	nvif_wr32(dev, NV_PVIDEO_SIZE_OUT(flip), crtc_h << 16 | crtc_w);
147 
148 	if (fb->pixel_format != DRM_FORMAT_UYVY)
149 		format |= NV_PVIDEO_FORMAT_COLOR_LE_CR8YB8CB8YA8;
150 	if (fb->pixel_format == DRM_FORMAT_NV12)
151 		format |= NV_PVIDEO_FORMAT_PLANAR;
152 	if (nv_plane->iturbt_709)
153 		format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
154 	if (nv_plane->colorkey & (1 << 24))
155 		format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
156 
157 	if (fb->pixel_format == DRM_FORMAT_NV12) {
158 		nvif_wr32(dev, NV_PVIDEO_UVPLANE_BASE(flip), 0);
159 		nvif_wr32(dev, NV_PVIDEO_UVPLANE_OFFSET_BUFF(flip),
160 			nv_fb->nvbo->bo.offset + fb->offsets[1]);
161 	}
162 	nvif_wr32(dev, NV_PVIDEO_FORMAT(flip), format);
163 	nvif_wr32(dev, NV_PVIDEO_STOP, 0);
164 	/* TODO: wait for vblank? */
165 	nvif_wr32(dev, NV_PVIDEO_BUFFER, flip ? 0x10 : 0x1);
166 	nv_plane->flip = !flip;
167 
168 	if (cur)
169 		nouveau_bo_unpin(cur);
170 
171 	return 0;
172 }
173 
174 static int
175 nv10_disable_plane(struct drm_plane *plane)
176 {
177 	struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
178 	struct nouveau_plane *nv_plane =
179 		container_of(plane, struct nouveau_plane, base);
180 
181 	nvif_wr32(dev, NV_PVIDEO_STOP, 1);
182 	if (nv_plane->cur) {
183 		nouveau_bo_unpin(nv_plane->cur);
184 		nv_plane->cur = NULL;
185 	}
186 
187 	return 0;
188 }
189 
190 static void
191 nv_destroy_plane(struct drm_plane *plane)
192 {
193 	plane->funcs->disable_plane(plane);
194 	drm_plane_cleanup(plane);
195 	kfree(plane);
196 }
197 
198 static void
199 nv10_set_params(struct nouveau_plane *plane)
200 {
201 	struct nvif_object *dev = &nouveau_drm(plane->base.dev)->device.object;
202 	u32 luma = (plane->brightness - 512) << 16 | plane->contrast;
203 	u32 chroma = ((sin_mul(plane->hue, plane->saturation) & 0xffff) << 16) |
204 		(cos_mul(plane->hue, plane->saturation) & 0xffff);
205 	u32 format = 0;
206 
207 	nvif_wr32(dev, NV_PVIDEO_LUMINANCE(0), luma);
208 	nvif_wr32(dev, NV_PVIDEO_LUMINANCE(1), luma);
209 	nvif_wr32(dev, NV_PVIDEO_CHROMINANCE(0), chroma);
210 	nvif_wr32(dev, NV_PVIDEO_CHROMINANCE(1), chroma);
211 	nvif_wr32(dev, NV_PVIDEO_COLOR_KEY, plane->colorkey & 0xffffff);
212 
213 	if (plane->cur) {
214 		if (plane->iturbt_709)
215 			format |= NV_PVIDEO_FORMAT_MATRIX_ITURBT709;
216 		if (plane->colorkey & (1 << 24))
217 			format |= NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY;
218 		nvif_mask(dev, NV_PVIDEO_FORMAT(plane->flip),
219 			NV_PVIDEO_FORMAT_MATRIX_ITURBT709 |
220 			NV_PVIDEO_FORMAT_DISPLAY_COLOR_KEY,
221 			format);
222 	}
223 }
224 
225 static int
226 nv_set_property(struct drm_plane *plane,
227 		struct drm_property *property,
228 		uint64_t value)
229 {
230 	struct nouveau_plane *nv_plane =
231 		container_of(plane, struct nouveau_plane, base);
232 
233 	if (property == nv_plane->props.colorkey)
234 		nv_plane->colorkey = value;
235 	else if (property == nv_plane->props.contrast)
236 		nv_plane->contrast = value;
237 	else if (property == nv_plane->props.brightness)
238 		nv_plane->brightness = value;
239 	else if (property == nv_plane->props.hue)
240 		nv_plane->hue = value;
241 	else if (property == nv_plane->props.saturation)
242 		nv_plane->saturation = value;
243 	else if (property == nv_plane->props.iturbt_709)
244 		nv_plane->iturbt_709 = value;
245 	else
246 		return -EINVAL;
247 
248 	if (nv_plane->set_params)
249 		nv_plane->set_params(nv_plane);
250 	return 0;
251 }
252 
253 static const struct drm_plane_funcs nv10_plane_funcs = {
254 	.update_plane = nv10_update_plane,
255 	.disable_plane = nv10_disable_plane,
256 	.set_property = nv_set_property,
257 	.destroy = nv_destroy_plane,
258 };
259 
260 static void
261 nv10_overlay_init(struct drm_device *device)
262 {
263 	struct nouveau_drm *drm = nouveau_drm(device);
264 	struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
265 	unsigned int num_formats = ARRAY_SIZE(formats);
266 	int ret;
267 
268 	if (!plane)
269 		return;
270 
271 	switch (drm->device.info.chipset) {
272 	case 0x10:
273 	case 0x11:
274 	case 0x15:
275 	case 0x1a:
276 	case 0x20:
277 		num_formats = 2;
278 		break;
279 	}
280 
281 	ret = drm_plane_init(device, &plane->base, 3 /* both crtc's */,
282 			     &nv10_plane_funcs,
283 			     formats, num_formats, false);
284 	if (ret)
285 		goto err;
286 
287 	/* Set up the plane properties */
288 	plane->props.colorkey = drm_property_create_range(
289 			device, 0, "colorkey", 0, 0x01ffffff);
290 	plane->props.contrast = drm_property_create_range(
291 			device, 0, "contrast", 0, 8192 - 1);
292 	plane->props.brightness = drm_property_create_range(
293 			device, 0, "brightness", 0, 1024);
294 	plane->props.hue = drm_property_create_range(
295 			device, 0, "hue", 0, 359);
296 	plane->props.saturation = drm_property_create_range(
297 			device, 0, "saturation", 0, 8192 - 1);
298 	plane->props.iturbt_709 = drm_property_create_range(
299 			device, 0, "iturbt_709", 0, 1);
300 	if (!plane->props.colorkey ||
301 	    !plane->props.contrast ||
302 	    !plane->props.brightness ||
303 	    !plane->props.hue ||
304 	    !plane->props.saturation ||
305 	    !plane->props.iturbt_709)
306 		goto cleanup;
307 
308 	plane->colorkey = 0;
309 	drm_object_attach_property(&plane->base.base,
310 				   plane->props.colorkey, plane->colorkey);
311 
312 	plane->contrast = 0x1000;
313 	drm_object_attach_property(&plane->base.base,
314 				   plane->props.contrast, plane->contrast);
315 
316 	plane->brightness = 512;
317 	drm_object_attach_property(&plane->base.base,
318 				   plane->props.brightness, plane->brightness);
319 
320 	plane->hue = 0;
321 	drm_object_attach_property(&plane->base.base,
322 				   plane->props.hue, plane->hue);
323 
324 	plane->saturation = 0x1000;
325 	drm_object_attach_property(&plane->base.base,
326 				   plane->props.saturation, plane->saturation);
327 
328 	plane->iturbt_709 = 0;
329 	drm_object_attach_property(&plane->base.base,
330 				   plane->props.iturbt_709, plane->iturbt_709);
331 
332 	plane->set_params = nv10_set_params;
333 	nv10_set_params(plane);
334 	nv10_disable_plane(&plane->base);
335 	return;
336 cleanup:
337 	drm_plane_cleanup(&plane->base);
338 err:
339 	kfree(plane);
340 	NV_ERROR(drm, "Failed to create plane\n");
341 }
342 
343 static int
344 nv04_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
345 		  struct drm_framebuffer *fb, int crtc_x, int crtc_y,
346 		  unsigned int crtc_w, unsigned int crtc_h,
347 		  uint32_t src_x, uint32_t src_y,
348 		  uint32_t src_w, uint32_t src_h)
349 {
350 	struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
351 	struct nouveau_plane *nv_plane =
352 		container_of(plane, struct nouveau_plane, base);
353 	struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
354 	struct nouveau_bo *cur = nv_plane->cur;
355 	uint32_t overlay = 1;
356 	int brightness = (nv_plane->brightness - 512) * 62 / 512;
357 	int pitch, ret, i;
358 
359 	/* Source parameters given in 16.16 fixed point, ignore fractional. */
360 	src_x >>= 16;
361 	src_y >>= 16;
362 	src_w >>= 16;
363 	src_h >>= 16;
364 
365 	pitch = ALIGN(src_w * 4, 0x100);
366 
367 	if (pitch > 0xffff)
368 		return -ERANGE;
369 
370 	/* TODO: Compute an offset? Not sure how to do this for YUYV. */
371 	if (src_x != 0 || src_y != 0)
372 		return -ERANGE;
373 
374 	if (crtc_w < src_w || crtc_h < src_h)
375 		return -ERANGE;
376 
377 	ret = nouveau_bo_pin(nv_fb->nvbo, TTM_PL_FLAG_VRAM, false);
378 	if (ret)
379 		return ret;
380 
381 	nv_plane->cur = nv_fb->nvbo;
382 
383 	nvif_wr32(dev, NV_PVIDEO_OE_STATE, 0);
384 	nvif_wr32(dev, NV_PVIDEO_SU_STATE, 0);
385 	nvif_wr32(dev, NV_PVIDEO_RM_STATE, 0);
386 
387 	for (i = 0; i < 2; i++) {
388 		nvif_wr32(dev, NV_PVIDEO_BUFF0_START_ADDRESS + 4 * i,
389 			nv_fb->nvbo->bo.offset);
390 		nvif_wr32(dev, NV_PVIDEO_BUFF0_PITCH_LENGTH + 4 * i, pitch);
391 		nvif_wr32(dev, NV_PVIDEO_BUFF0_OFFSET + 4 * i, 0);
392 	}
393 	nvif_wr32(dev, NV_PVIDEO_WINDOW_START, crtc_y << 16 | crtc_x);
394 	nvif_wr32(dev, NV_PVIDEO_WINDOW_SIZE, crtc_h << 16 | crtc_w);
395 	nvif_wr32(dev, NV_PVIDEO_STEP_SIZE,
396 		(uint32_t)(((src_h - 1) << 11) / (crtc_h - 1)) << 16 | (uint32_t)(((src_w - 1) << 11) / (crtc_w - 1)));
397 
398 	/* It should be possible to convert hue/contrast to this */
399 	nvif_wr32(dev, NV_PVIDEO_RED_CSC_OFFSET, 0x69 - brightness);
400 	nvif_wr32(dev, NV_PVIDEO_GREEN_CSC_OFFSET, 0x3e + brightness);
401 	nvif_wr32(dev, NV_PVIDEO_BLUE_CSC_OFFSET, 0x89 - brightness);
402 	nvif_wr32(dev, NV_PVIDEO_CSC_ADJUST, 0);
403 
404 	nvif_wr32(dev, NV_PVIDEO_CONTROL_Y, 0x001); /* (BLUR_ON, LINE_HALF) */
405 	nvif_wr32(dev, NV_PVIDEO_CONTROL_X, 0x111); /* (WEIGHT_HEAVY, SHARPENING_ON, SMOOTHING_ON) */
406 
407 	nvif_wr32(dev, NV_PVIDEO_FIFO_BURST_LENGTH, 0x03);
408 	nvif_wr32(dev, NV_PVIDEO_FIFO_THRES_SIZE, 0x38);
409 
410 	nvif_wr32(dev, NV_PVIDEO_KEY, nv_plane->colorkey);
411 
412 	if (nv_plane->colorkey & (1 << 24))
413 		overlay |= 0x10;
414 	if (fb->pixel_format == DRM_FORMAT_YUYV)
415 		overlay |= 0x100;
416 
417 	nvif_wr32(dev, NV_PVIDEO_OVERLAY, overlay);
418 
419 	nvif_wr32(dev, NV_PVIDEO_SU_STATE, nvif_rd32(dev, NV_PVIDEO_SU_STATE) ^ (1 << 16));
420 
421 	if (cur)
422 		nouveau_bo_unpin(cur);
423 
424 	return 0;
425 }
426 
427 static int
428 nv04_disable_plane(struct drm_plane *plane)
429 {
430 	struct nvif_object *dev = &nouveau_drm(plane->dev)->device.object;
431 	struct nouveau_plane *nv_plane =
432 		container_of(plane, struct nouveau_plane, base);
433 
434 	nvif_mask(dev, NV_PVIDEO_OVERLAY, 1, 0);
435 	nvif_wr32(dev, NV_PVIDEO_OE_STATE, 0);
436 	nvif_wr32(dev, NV_PVIDEO_SU_STATE, 0);
437 	nvif_wr32(dev, NV_PVIDEO_RM_STATE, 0);
438 	if (nv_plane->cur) {
439 		nouveau_bo_unpin(nv_plane->cur);
440 		nv_plane->cur = NULL;
441 	}
442 
443 	return 0;
444 }
445 
446 static const struct drm_plane_funcs nv04_plane_funcs = {
447 	.update_plane = nv04_update_plane,
448 	.disable_plane = nv04_disable_plane,
449 	.set_property = nv_set_property,
450 	.destroy = nv_destroy_plane,
451 };
452 
453 static void
454 nv04_overlay_init(struct drm_device *device)
455 {
456 	struct nouveau_drm *drm = nouveau_drm(device);
457 	struct nouveau_plane *plane = kzalloc(sizeof(struct nouveau_plane), GFP_KERNEL);
458 	int ret;
459 
460 	if (!plane)
461 		return;
462 
463 	ret = drm_plane_init(device, &plane->base, 1 /* single crtc */,
464 			     &nv04_plane_funcs,
465 			     formats, 2, false);
466 	if (ret)
467 		goto err;
468 
469 	/* Set up the plane properties */
470 	plane->props.colorkey = drm_property_create_range(
471 			device, 0, "colorkey", 0, 0x01ffffff);
472 	plane->props.brightness = drm_property_create_range(
473 			device, 0, "brightness", 0, 1024);
474 	if (!plane->props.colorkey ||
475 	    !plane->props.brightness)
476 		goto cleanup;
477 
478 	plane->colorkey = 0;
479 	drm_object_attach_property(&plane->base.base,
480 				   plane->props.colorkey, plane->colorkey);
481 
482 	plane->brightness = 512;
483 	drm_object_attach_property(&plane->base.base,
484 				   plane->props.brightness, plane->brightness);
485 
486 	nv04_disable_plane(&plane->base);
487 	return;
488 cleanup:
489 	drm_plane_cleanup(&plane->base);
490 err:
491 	kfree(plane);
492 	NV_ERROR(drm, "Failed to create plane\n");
493 }
494 
495 void
496 nouveau_overlay_init(struct drm_device *device)
497 {
498 	struct nvif_device *dev = &nouveau_drm(device)->device;
499 	if (dev->info.chipset < 0x10)
500 		nv04_overlay_init(device);
501 	else if (dev->info.chipset <= 0x40)
502 		nv10_overlay_init(device);
503 }
504