1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2016 Linaro Ltd.
4 * Copyright 2016 ZTE Corporation.
5 */
6
7 #include <drm/drm_atomic.h>
8 #include <drm/drm_atomic_helper.h>
9 #include <drm/drm_fb_cma_helper.h>
10 #include <drm/drm_fourcc.h>
11 #include <drm/drm_gem_cma_helper.h>
12 #include <drm/drm_modeset_helper_vtables.h>
13 #include <drm/drm_plane_helper.h>
14
15 #include "zx_common_regs.h"
16 #include "zx_drm_drv.h"
17 #include "zx_plane.h"
18 #include "zx_plane_regs.h"
19 #include "zx_vou.h"
20
21 static const uint32_t gl_formats[] = {
22 DRM_FORMAT_ARGB8888,
23 DRM_FORMAT_XRGB8888,
24 DRM_FORMAT_RGB888,
25 DRM_FORMAT_RGB565,
26 DRM_FORMAT_ARGB1555,
27 DRM_FORMAT_ARGB4444,
28 };
29
30 static const uint32_t vl_formats[] = {
31 DRM_FORMAT_NV12, /* Semi-planar YUV420 */
32 DRM_FORMAT_YUV420, /* Planar YUV420 */
33 DRM_FORMAT_YUYV, /* Packed YUV422 */
34 DRM_FORMAT_YVYU,
35 DRM_FORMAT_UYVY,
36 DRM_FORMAT_VYUY,
37 DRM_FORMAT_YUV444, /* YUV444 8bit */
38 /*
39 * TODO: add formats below that HW supports:
40 * - YUV420 P010
41 * - YUV420 Hantro
42 * - YUV444 10bit
43 */
44 };
45
46 #define FRAC_16_16(mult, div) (((mult) << 16) / (div))
47
zx_vl_plane_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)48 static int zx_vl_plane_atomic_check(struct drm_plane *plane,
49 struct drm_atomic_state *state)
50 {
51 struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state,
52 plane);
53 struct drm_framebuffer *fb = plane_state->fb;
54 struct drm_crtc *crtc = plane_state->crtc;
55 struct drm_crtc_state *crtc_state;
56 int min_scale = FRAC_16_16(1, 8);
57 int max_scale = FRAC_16_16(8, 1);
58
59 if (!crtc || WARN_ON(!fb))
60 return 0;
61
62 crtc_state = drm_atomic_get_existing_crtc_state(state,
63 crtc);
64 if (WARN_ON(!crtc_state))
65 return -EINVAL;
66
67 /* nothing to check when disabling or disabled */
68 if (!crtc_state->enable)
69 return 0;
70
71 /* plane must be enabled */
72 if (!plane_state->crtc)
73 return -EINVAL;
74
75 return drm_atomic_helper_check_plane_state(plane_state, crtc_state,
76 min_scale, max_scale,
77 true, true);
78 }
79
zx_vl_get_fmt(uint32_t format)80 static int zx_vl_get_fmt(uint32_t format)
81 {
82 switch (format) {
83 case DRM_FORMAT_NV12:
84 return VL_FMT_YUV420;
85 case DRM_FORMAT_YUV420:
86 return VL_YUV420_PLANAR | VL_FMT_YUV420;
87 case DRM_FORMAT_YUYV:
88 return VL_YUV422_YUYV | VL_FMT_YUV422;
89 case DRM_FORMAT_YVYU:
90 return VL_YUV422_YVYU | VL_FMT_YUV422;
91 case DRM_FORMAT_UYVY:
92 return VL_YUV422_UYVY | VL_FMT_YUV422;
93 case DRM_FORMAT_VYUY:
94 return VL_YUV422_VYUY | VL_FMT_YUV422;
95 case DRM_FORMAT_YUV444:
96 return VL_FMT_YUV444_8BIT;
97 default:
98 WARN_ONCE(1, "invalid pixel format %d\n", format);
99 return -EINVAL;
100 }
101 }
102
zx_vl_set_update(struct zx_plane * zplane)103 static inline void zx_vl_set_update(struct zx_plane *zplane)
104 {
105 void __iomem *layer = zplane->layer;
106
107 zx_writel_mask(layer + VL_CTRL0, VL_UPDATE, VL_UPDATE);
108 }
109
zx_vl_rsz_set_update(struct zx_plane * zplane)110 static inline void zx_vl_rsz_set_update(struct zx_plane *zplane)
111 {
112 zx_writel(zplane->rsz + RSZ_VL_ENABLE_CFG, 1);
113 }
114
zx_vl_rsz_get_fmt(uint32_t format)115 static int zx_vl_rsz_get_fmt(uint32_t format)
116 {
117 switch (format) {
118 case DRM_FORMAT_NV12:
119 case DRM_FORMAT_YUV420:
120 return RSZ_VL_FMT_YCBCR420;
121 case DRM_FORMAT_YUYV:
122 case DRM_FORMAT_YVYU:
123 case DRM_FORMAT_UYVY:
124 case DRM_FORMAT_VYUY:
125 return RSZ_VL_FMT_YCBCR422;
126 case DRM_FORMAT_YUV444:
127 return RSZ_VL_FMT_YCBCR444;
128 default:
129 WARN_ONCE(1, "invalid pixel format %d\n", format);
130 return -EINVAL;
131 }
132 }
133
rsz_step_value(u32 src,u32 dst)134 static inline u32 rsz_step_value(u32 src, u32 dst)
135 {
136 u32 val = 0;
137
138 if (src == dst)
139 val = 0;
140 else if (src < dst)
141 val = RSZ_PARA_STEP((src << 16) / dst);
142 else if (src > dst)
143 val = RSZ_DATA_STEP(src / dst) |
144 RSZ_PARA_STEP(((src << 16) / dst) & 0xffff);
145
146 return val;
147 }
148
zx_vl_rsz_setup(struct zx_plane * zplane,uint32_t format,u32 src_w,u32 src_h,u32 dst_w,u32 dst_h)149 static void zx_vl_rsz_setup(struct zx_plane *zplane, uint32_t format,
150 u32 src_w, u32 src_h, u32 dst_w, u32 dst_h)
151 {
152 void __iomem *rsz = zplane->rsz;
153 u32 src_chroma_w = src_w;
154 u32 src_chroma_h = src_h;
155 int fmt;
156
157 /* Set up source and destination resolution */
158 zx_writel(rsz + RSZ_SRC_CFG, RSZ_VER(src_h - 1) | RSZ_HOR(src_w - 1));
159 zx_writel(rsz + RSZ_DEST_CFG, RSZ_VER(dst_h - 1) | RSZ_HOR(dst_w - 1));
160
161 /* Configure data format for VL RSZ */
162 fmt = zx_vl_rsz_get_fmt(format);
163 if (fmt >= 0)
164 zx_writel_mask(rsz + RSZ_VL_CTRL_CFG, RSZ_VL_FMT_MASK, fmt);
165
166 /* Calculate Chroma height and width */
167 if (fmt == RSZ_VL_FMT_YCBCR420) {
168 src_chroma_w = src_w >> 1;
169 src_chroma_h = src_h >> 1;
170 } else if (fmt == RSZ_VL_FMT_YCBCR422) {
171 src_chroma_w = src_w >> 1;
172 }
173
174 /* Set up Luma and Chroma step registers */
175 zx_writel(rsz + RSZ_VL_LUMA_HOR, rsz_step_value(src_w, dst_w));
176 zx_writel(rsz + RSZ_VL_LUMA_VER, rsz_step_value(src_h, dst_h));
177 zx_writel(rsz + RSZ_VL_CHROMA_HOR, rsz_step_value(src_chroma_w, dst_w));
178 zx_writel(rsz + RSZ_VL_CHROMA_VER, rsz_step_value(src_chroma_h, dst_h));
179
180 zx_vl_rsz_set_update(zplane);
181 }
182
zx_vl_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)183 static void zx_vl_plane_atomic_update(struct drm_plane *plane,
184 struct drm_atomic_state *state)
185 {
186 struct zx_plane *zplane = to_zx_plane(plane);
187 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
188 plane);
189 struct drm_framebuffer *fb = new_state->fb;
190 struct drm_rect *src = &new_state->src;
191 struct drm_rect *dst = &new_state->dst;
192 struct drm_gem_cma_object *cma_obj;
193 void __iomem *layer = zplane->layer;
194 void __iomem *hbsc = zplane->hbsc;
195 void __iomem *paddr_reg;
196 dma_addr_t paddr;
197 u32 src_x, src_y, src_w, src_h;
198 u32 dst_x, dst_y, dst_w, dst_h;
199 uint32_t format;
200 int fmt;
201 int i;
202
203 if (!fb)
204 return;
205
206 format = fb->format->format;
207
208 src_x = src->x1 >> 16;
209 src_y = src->y1 >> 16;
210 src_w = drm_rect_width(src) >> 16;
211 src_h = drm_rect_height(src) >> 16;
212
213 dst_x = dst->x1;
214 dst_y = dst->y1;
215 dst_w = drm_rect_width(dst);
216 dst_h = drm_rect_height(dst);
217
218 /* Set up data address registers for Y, Cb and Cr planes */
219 paddr_reg = layer + VL_Y;
220 for (i = 0; i < fb->format->num_planes; i++) {
221 cma_obj = drm_fb_cma_get_gem_obj(fb, i);
222 paddr = cma_obj->paddr + fb->offsets[i];
223 paddr += src_y * fb->pitches[i];
224 paddr += src_x * fb->format->cpp[i];
225 zx_writel(paddr_reg, paddr);
226 paddr_reg += 4;
227 }
228
229 /* Set up source height/width register */
230 zx_writel(layer + VL_SRC_SIZE, GL_SRC_W(src_w) | GL_SRC_H(src_h));
231
232 /* Set up start position register */
233 zx_writel(layer + VL_POS_START, GL_POS_X(dst_x) | GL_POS_Y(dst_y));
234
235 /* Set up end position register */
236 zx_writel(layer + VL_POS_END,
237 GL_POS_X(dst_x + dst_w) | GL_POS_Y(dst_y + dst_h));
238
239 /* Strides of Cb and Cr planes should be identical */
240 zx_writel(layer + VL_STRIDE, LUMA_STRIDE(fb->pitches[0]) |
241 CHROMA_STRIDE(fb->pitches[1]));
242
243 /* Set up video layer data format */
244 fmt = zx_vl_get_fmt(format);
245 if (fmt >= 0)
246 zx_writel(layer + VL_CTRL1, fmt);
247
248 /* Always use scaler since it exists (set for not bypass) */
249 zx_writel_mask(layer + VL_CTRL2, VL_SCALER_BYPASS_MODE,
250 VL_SCALER_BYPASS_MODE);
251
252 zx_vl_rsz_setup(zplane, format, src_w, src_h, dst_w, dst_h);
253
254 /* Enable HBSC block */
255 zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, HBSC_CTRL_EN);
256
257 zx_vou_layer_enable(plane);
258
259 zx_vl_set_update(zplane);
260 }
261
zx_plane_atomic_disable(struct drm_plane * plane,struct drm_atomic_state * state)262 static void zx_plane_atomic_disable(struct drm_plane *plane,
263 struct drm_atomic_state *state)
264 {
265 struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
266 plane);
267 struct zx_plane *zplane = to_zx_plane(plane);
268 void __iomem *hbsc = zplane->hbsc;
269
270 zx_vou_layer_disable(plane, old_state);
271
272 /* Disable HBSC block */
273 zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, 0);
274 }
275
276 static const struct drm_plane_helper_funcs zx_vl_plane_helper_funcs = {
277 .atomic_check = zx_vl_plane_atomic_check,
278 .atomic_update = zx_vl_plane_atomic_update,
279 .atomic_disable = zx_plane_atomic_disable,
280 };
281
zx_gl_plane_atomic_check(struct drm_plane * plane,struct drm_atomic_state * state)282 static int zx_gl_plane_atomic_check(struct drm_plane *plane,
283 struct drm_atomic_state *state)
284 {
285 struct drm_plane_state *plane_state = drm_atomic_get_new_plane_state(state,
286 plane);
287 struct drm_framebuffer *fb = plane_state->fb;
288 struct drm_crtc *crtc = plane_state->crtc;
289 struct drm_crtc_state *crtc_state;
290
291 if (!crtc || WARN_ON(!fb))
292 return 0;
293
294 crtc_state = drm_atomic_get_existing_crtc_state(state,
295 crtc);
296 if (WARN_ON(!crtc_state))
297 return -EINVAL;
298
299 /* nothing to check when disabling or disabled */
300 if (!crtc_state->enable)
301 return 0;
302
303 /* plane must be enabled */
304 if (!plane_state->crtc)
305 return -EINVAL;
306
307 return drm_atomic_helper_check_plane_state(plane_state, crtc_state,
308 DRM_PLANE_HELPER_NO_SCALING,
309 DRM_PLANE_HELPER_NO_SCALING,
310 false, true);
311 }
312
zx_gl_get_fmt(uint32_t format)313 static int zx_gl_get_fmt(uint32_t format)
314 {
315 switch (format) {
316 case DRM_FORMAT_ARGB8888:
317 case DRM_FORMAT_XRGB8888:
318 return GL_FMT_ARGB8888;
319 case DRM_FORMAT_RGB888:
320 return GL_FMT_RGB888;
321 case DRM_FORMAT_RGB565:
322 return GL_FMT_RGB565;
323 case DRM_FORMAT_ARGB1555:
324 return GL_FMT_ARGB1555;
325 case DRM_FORMAT_ARGB4444:
326 return GL_FMT_ARGB4444;
327 default:
328 WARN_ONCE(1, "invalid pixel format %d\n", format);
329 return -EINVAL;
330 }
331 }
332
zx_gl_set_update(struct zx_plane * zplane)333 static inline void zx_gl_set_update(struct zx_plane *zplane)
334 {
335 void __iomem *layer = zplane->layer;
336
337 zx_writel_mask(layer + GL_CTRL0, GL_UPDATE, GL_UPDATE);
338 }
339
zx_gl_rsz_set_update(struct zx_plane * zplane)340 static inline void zx_gl_rsz_set_update(struct zx_plane *zplane)
341 {
342 zx_writel(zplane->rsz + RSZ_ENABLE_CFG, 1);
343 }
344
zx_gl_rsz_setup(struct zx_plane * zplane,u32 src_w,u32 src_h,u32 dst_w,u32 dst_h)345 static void zx_gl_rsz_setup(struct zx_plane *zplane, u32 src_w, u32 src_h,
346 u32 dst_w, u32 dst_h)
347 {
348 void __iomem *rsz = zplane->rsz;
349
350 zx_writel(rsz + RSZ_SRC_CFG, RSZ_VER(src_h - 1) | RSZ_HOR(src_w - 1));
351 zx_writel(rsz + RSZ_DEST_CFG, RSZ_VER(dst_h - 1) | RSZ_HOR(dst_w - 1));
352
353 zx_gl_rsz_set_update(zplane);
354 }
355
zx_gl_plane_atomic_update(struct drm_plane * plane,struct drm_atomic_state * state)356 static void zx_gl_plane_atomic_update(struct drm_plane *plane,
357 struct drm_atomic_state *state)
358 {
359 struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
360 plane);
361 struct zx_plane *zplane = to_zx_plane(plane);
362 struct drm_framebuffer *fb = new_state->fb;
363 struct drm_gem_cma_object *cma_obj;
364 void __iomem *layer = zplane->layer;
365 void __iomem *csc = zplane->csc;
366 void __iomem *hbsc = zplane->hbsc;
367 u32 src_x, src_y, src_w, src_h;
368 u32 dst_x, dst_y, dst_w, dst_h;
369 unsigned int bpp;
370 uint32_t format;
371 dma_addr_t paddr;
372 u32 stride;
373 int fmt;
374
375 if (!fb)
376 return;
377
378 format = fb->format->format;
379 stride = fb->pitches[0];
380
381 src_x = new_state->src_x >> 16;
382 src_y = new_state->src_y >> 16;
383 src_w = new_state->src_w >> 16;
384 src_h = new_state->src_h >> 16;
385
386 dst_x = new_state->crtc_x;
387 dst_y = new_state->crtc_y;
388 dst_w = new_state->crtc_w;
389 dst_h = new_state->crtc_h;
390
391 bpp = fb->format->cpp[0];
392
393 cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
394 paddr = cma_obj->paddr + fb->offsets[0];
395 paddr += src_y * stride + src_x * bpp / 8;
396 zx_writel(layer + GL_ADDR, paddr);
397
398 /* Set up source height/width register */
399 zx_writel(layer + GL_SRC_SIZE, GL_SRC_W(src_w) | GL_SRC_H(src_h));
400
401 /* Set up start position register */
402 zx_writel(layer + GL_POS_START, GL_POS_X(dst_x) | GL_POS_Y(dst_y));
403
404 /* Set up end position register */
405 zx_writel(layer + GL_POS_END,
406 GL_POS_X(dst_x + dst_w) | GL_POS_Y(dst_y + dst_h));
407
408 /* Set up stride register */
409 zx_writel(layer + GL_STRIDE, stride & 0xffff);
410
411 /* Set up graphic layer data format */
412 fmt = zx_gl_get_fmt(format);
413 if (fmt >= 0)
414 zx_writel_mask(layer + GL_CTRL1, GL_DATA_FMT_MASK,
415 fmt << GL_DATA_FMT_SHIFT);
416
417 /* Initialize global alpha with a sane value */
418 zx_writel_mask(layer + GL_CTRL2, GL_GLOBAL_ALPHA_MASK,
419 0xff << GL_GLOBAL_ALPHA_SHIFT);
420
421 /* Setup CSC for the GL */
422 if (dst_h > 720)
423 zx_writel_mask(csc + CSC_CTRL0, CSC_COV_MODE_MASK,
424 CSC_BT709_IMAGE_RGB2YCBCR << CSC_COV_MODE_SHIFT);
425 else
426 zx_writel_mask(csc + CSC_CTRL0, CSC_COV_MODE_MASK,
427 CSC_BT601_IMAGE_RGB2YCBCR << CSC_COV_MODE_SHIFT);
428 zx_writel_mask(csc + CSC_CTRL0, CSC_WORK_ENABLE, CSC_WORK_ENABLE);
429
430 /* Always use scaler since it exists (set for not bypass) */
431 zx_writel_mask(layer + GL_CTRL3, GL_SCALER_BYPASS_MODE,
432 GL_SCALER_BYPASS_MODE);
433
434 zx_gl_rsz_setup(zplane, src_w, src_h, dst_w, dst_h);
435
436 /* Enable HBSC block */
437 zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, HBSC_CTRL_EN);
438
439 zx_vou_layer_enable(plane);
440
441 zx_gl_set_update(zplane);
442 }
443
444 static const struct drm_plane_helper_funcs zx_gl_plane_helper_funcs = {
445 .atomic_check = zx_gl_plane_atomic_check,
446 .atomic_update = zx_gl_plane_atomic_update,
447 .atomic_disable = zx_plane_atomic_disable,
448 };
449
450 static const struct drm_plane_funcs zx_plane_funcs = {
451 .update_plane = drm_atomic_helper_update_plane,
452 .disable_plane = drm_atomic_helper_disable_plane,
453 .destroy = drm_plane_cleanup,
454 .reset = drm_atomic_helper_plane_reset,
455 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
456 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
457 };
458
zx_plane_set_update(struct drm_plane * plane)459 void zx_plane_set_update(struct drm_plane *plane)
460 {
461 struct zx_plane *zplane = to_zx_plane(plane);
462
463 /* Do nothing if the plane is not enabled */
464 if (!plane->state->crtc)
465 return;
466
467 switch (plane->type) {
468 case DRM_PLANE_TYPE_PRIMARY:
469 zx_gl_rsz_set_update(zplane);
470 zx_gl_set_update(zplane);
471 break;
472 case DRM_PLANE_TYPE_OVERLAY:
473 zx_vl_rsz_set_update(zplane);
474 zx_vl_set_update(zplane);
475 break;
476 default:
477 WARN_ONCE(1, "unsupported plane type %d\n", plane->type);
478 }
479 }
480
zx_plane_hbsc_init(struct zx_plane * zplane)481 static void zx_plane_hbsc_init(struct zx_plane *zplane)
482 {
483 void __iomem *hbsc = zplane->hbsc;
484
485 /*
486 * Initialize HBSC block with a sane configuration per recommedation
487 * from ZTE BSP code.
488 */
489 zx_writel(hbsc + HBSC_SATURATION, 0x200);
490 zx_writel(hbsc + HBSC_HUE, 0x0);
491 zx_writel(hbsc + HBSC_BRIGHT, 0x0);
492 zx_writel(hbsc + HBSC_CONTRAST, 0x200);
493
494 zx_writel(hbsc + HBSC_THRESHOLD_COL1, (0x3ac << 16) | 0x40);
495 zx_writel(hbsc + HBSC_THRESHOLD_COL2, (0x3c0 << 16) | 0x40);
496 zx_writel(hbsc + HBSC_THRESHOLD_COL3, (0x3c0 << 16) | 0x40);
497 }
498
zx_plane_init(struct drm_device * drm,struct zx_plane * zplane,enum drm_plane_type type)499 int zx_plane_init(struct drm_device *drm, struct zx_plane *zplane,
500 enum drm_plane_type type)
501 {
502 const struct drm_plane_helper_funcs *helper;
503 struct drm_plane *plane = &zplane->plane;
504 struct device *dev = zplane->dev;
505 const uint32_t *formats;
506 unsigned int format_count;
507 int ret;
508
509 zx_plane_hbsc_init(zplane);
510
511 switch (type) {
512 case DRM_PLANE_TYPE_PRIMARY:
513 helper = &zx_gl_plane_helper_funcs;
514 formats = gl_formats;
515 format_count = ARRAY_SIZE(gl_formats);
516 break;
517 case DRM_PLANE_TYPE_OVERLAY:
518 helper = &zx_vl_plane_helper_funcs;
519 formats = vl_formats;
520 format_count = ARRAY_SIZE(vl_formats);
521 break;
522 default:
523 return -ENODEV;
524 }
525
526 ret = drm_universal_plane_init(drm, plane, VOU_CRTC_MASK,
527 &zx_plane_funcs, formats, format_count,
528 NULL, type, NULL);
529 if (ret) {
530 DRM_DEV_ERROR(dev, "failed to init universal plane: %d\n", ret);
531 return ret;
532 }
533
534 drm_plane_helper_add(plane, helper);
535
536 return 0;
537 }
538