2 * rcar_du_plane.c -- R-Car Display Unit Planes
4 * Copyright (C) 2013-2014 Renesas Electronics Corporation
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
15 #include <drm/drm_crtc.h>
16 #include <drm/drm_crtc_helper.h>
17 #include <drm/drm_fb_cma_helper.h>
18 #include <drm/drm_gem_cma_helper.h>
20 #include "rcar_du_drv.h"
21 #include "rcar_du_kms.h"
22 #include "rcar_du_plane.h"
23 #include "rcar_du_regs.h"
25 #define RCAR_DU_COLORKEY_NONE (0 << 24)
26 #define RCAR_DU_COLORKEY_SOURCE (1 << 24)
27 #define RCAR_DU_COLORKEY_MASK (1 << 24)
29 struct rcar_du_kms_plane {
30 struct drm_plane plane;
31 struct rcar_du_plane *hwplane;
34 static inline struct rcar_du_plane *to_rcar_plane(struct drm_plane *plane)
36 return container_of(plane, struct rcar_du_kms_plane, plane)->hwplane;
39 static u32 rcar_du_plane_read(struct rcar_du_group *rgrp,
40 unsigned int index, u32 reg)
42 return rcar_du_read(rgrp->dev,
43 rgrp->mmio_offset + index * PLANE_OFF + reg);
46 static void rcar_du_plane_write(struct rcar_du_group *rgrp,
47 unsigned int index, u32 reg, u32 data)
49 rcar_du_write(rgrp->dev, rgrp->mmio_offset + index * PLANE_OFF + reg,
53 int rcar_du_plane_reserve(struct rcar_du_plane *plane,
54 const struct rcar_du_format_info *format)
56 struct rcar_du_group *rgrp = plane->group;
60 mutex_lock(&rgrp->planes.lock);
62 for (i = 0; i < ARRAY_SIZE(rgrp->planes.planes); ++i) {
63 if (!(rgrp->planes.free & (1 << i)))
66 if (format->planes == 1 ||
67 rgrp->planes.free & (1 << ((i + 1) % 8)))
71 if (i == ARRAY_SIZE(rgrp->planes.planes))
74 rgrp->planes.free &= ~(1 << i);
75 if (format->planes == 2)
76 rgrp->planes.free &= ~(1 << ((i + 1) % 8));
83 mutex_unlock(&rgrp->planes.lock);
87 void rcar_du_plane_release(struct rcar_du_plane *plane)
89 struct rcar_du_group *rgrp = plane->group;
91 if (plane->hwindex == -1)
94 mutex_lock(&rgrp->planes.lock);
95 rgrp->planes.free |= 1 << plane->hwindex;
96 if (plane->format->planes == 2)
97 rgrp->planes.free |= 1 << ((plane->hwindex + 1) % 8);
98 mutex_unlock(&rgrp->planes.lock);
103 void rcar_du_plane_update_base(struct rcar_du_plane *plane)
105 struct rcar_du_group *rgrp = plane->group;
106 unsigned int index = plane->hwindex;
109 /* Memory pitch (expressed in pixels) */
110 if (plane->format->planes == 2)
113 mwr = plane->pitch * 8 / plane->format->bpp;
115 if ((plane->interlace_flag) && (plane->format->bpp == 32))
116 rcar_du_plane_write(rgrp, index, PnMWR, mwr * 2);
118 rcar_du_plane_write(rgrp, index, PnMWR, mwr);
120 /* The Y position is expressed in raster line units and must be doubled
121 * for 32bpp formats, according to the R8A7790 datasheet. No mention of
122 * doubling the Y position is found in the R8A7779 datasheet, but the
123 * rule seems to apply there as well.
125 * Similarly, for the second plane, NV12 and NV21 formats seem to
126 * require a halved Y position value.
128 rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
129 if ((!plane->interlace_flag) && (plane->format->bpp == 32))
130 rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y * 2);
132 rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y);
133 rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[0]);
135 if (plane->format->planes == 2) {
136 index = (index + 1) % 8;
138 rcar_du_plane_write(rgrp, index, PnSPXR, plane->src_x);
139 rcar_du_plane_write(rgrp, index, PnSPYR, plane->src_y *
140 (plane->format->bpp == 16 ? 2 : 1) / 2);
141 rcar_du_plane_write(rgrp, index, PnDSA0R, plane->dma[1]);
145 void rcar_du_plane_compute_base(struct rcar_du_plane *plane,
146 struct drm_framebuffer *fb)
148 struct drm_gem_cma_object *gem;
150 plane->pitch = fb->pitches[0];
152 gem = drm_fb_cma_get_gem_obj(fb, 0);
153 plane->dma[0] = gem->paddr + fb->offsets[0];
155 if (plane->format->planes == 2) {
156 gem = drm_fb_cma_get_gem_obj(fb, 1);
157 plane->dma[1] = gem->paddr + fb->offsets[1];
161 static void rcar_du_plane_setup_mode(struct rcar_du_plane *plane,
164 struct rcar_du_group *rgrp = plane->group;
168 /* The PnALPHAR register controls alpha-blending in 16bpp formats
169 * (ARGB1555 and XRGB1555).
171 * For ARGB, set the alpha value to 0, and enable alpha-blending when
172 * the A bit is 0. This maps A=0 to alpha=0 and A=1 to alpha=255.
174 * For XRGB, set the alpha value to the plane-wide alpha value and
175 * enable alpha-blending regardless of the X bit value.
177 if (plane->format->fourcc != DRM_FORMAT_XRGB1555)
178 rcar_du_plane_write(rgrp, index, PnALPHAR, PnALPHAR_ABIT_0);
180 rcar_du_plane_write(rgrp, index, PnALPHAR,
181 PnALPHAR_ABIT_X | plane->alpha);
183 pnmr = PnMR_BM_MD | plane->format->pnmr;
185 /* Disable color keying when requested. YUV formats have the
186 * PnMR_SPIM_TP_OFF bit set in their pnmr field, disabling color keying
189 if ((plane->colorkey & RCAR_DU_COLORKEY_MASK) == RCAR_DU_COLORKEY_NONE)
190 pnmr |= PnMR_SPIM_TP_OFF;
192 /* For packed YUV formats we need to select the U/V order. */
193 if (plane->format->fourcc == DRM_FORMAT_YUYV)
194 pnmr |= PnMR_YCDF_YUYV;
196 rcar_du_plane_write(rgrp, index, PnMR, pnmr);
198 switch (plane->format->fourcc) {
199 case DRM_FORMAT_RGB565:
200 colorkey = ((plane->colorkey & 0xf80000) >> 8)
201 | ((plane->colorkey & 0x00fc00) >> 5)
202 | ((plane->colorkey & 0x0000f8) >> 3);
203 rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
206 case DRM_FORMAT_ARGB1555:
207 case DRM_FORMAT_XRGB1555:
208 colorkey = ((plane->colorkey & 0xf80000) >> 9)
209 | ((plane->colorkey & 0x00f800) >> 6)
210 | ((plane->colorkey & 0x0000f8) >> 3);
211 rcar_du_plane_write(rgrp, index, PnTC2R, colorkey);
214 case DRM_FORMAT_XRGB8888:
215 case DRM_FORMAT_ARGB8888:
216 rcar_du_plane_write(rgrp, index, PnTC3R,
217 PnTC3R_CODE | (plane->colorkey & 0xffffff));
222 static void __rcar_du_plane_setup(struct rcar_du_plane *plane,
225 struct rcar_du_group *rgrp = plane->group;
226 u32 ddcr2 = PnDDCR2_CODE;
232 * The data format is selected by the DDDF field in PnMR and the EDF
235 ddcr4 = rcar_du_plane_read(rgrp, index, PnDDCR4);
236 ddcr4 &= ~PnDDCR4_EDF_MASK;
237 ddcr4 |= plane->format->edf | PnDDCR4_CODE;
239 rcar_du_plane_setup_mode(plane, index);
241 if (plane->format->planes == 2) {
242 if (plane->hwindex != index) {
243 if (plane->format->fourcc == DRM_FORMAT_NV12 ||
244 plane->format->fourcc == DRM_FORMAT_NV21)
245 ddcr2 |= PnDDCR2_Y420;
247 if (plane->format->fourcc == DRM_FORMAT_NV21)
248 ddcr2 |= PnDDCR2_NV21;
250 ddcr2 |= PnDDCR2_DIVU;
252 ddcr2 |= PnDDCR2_DIVY;
256 rcar_du_plane_write(rgrp, index, PnDDCR2, ddcr2);
257 rcar_du_plane_write(rgrp, index, PnDDCR4, ddcr4);
259 /* Memory pitch (expressed in pixels) */
260 if (plane->format->planes == 2)
263 mwr = plane->pitch * 8 / plane->format->bpp;
265 if ((plane->interlace_flag) && (plane->format->bpp == 32))
266 rcar_du_plane_write(rgrp, index, PnMWR, mwr * 2);
268 rcar_du_plane_write(rgrp, index, PnMWR, mwr);
270 /* Destination position and size */
271 rcar_du_plane_write(rgrp, index, PnDSXR, plane->width);
272 rcar_du_plane_write(rgrp, index, PnDSYR, plane->height);
273 rcar_du_plane_write(rgrp, index, PnDPXR, plane->dst_x);
274 rcar_du_plane_write(rgrp, index, PnDPYR, plane->dst_y);
276 /* Wrap-around and blinking, disabled */
277 rcar_du_plane_write(rgrp, index, PnWASPR, 0);
278 rcar_du_plane_write(rgrp, index, PnWAMWR, 4095);
279 rcar_du_plane_write(rgrp, index, PnBTR, 0);
280 rcar_du_plane_write(rgrp, index, PnMLR, 0);
283 void rcar_du_plane_setup(struct rcar_du_plane *plane)
285 __rcar_du_plane_setup(plane, plane->hwindex);
286 if (plane->format->planes == 2)
287 __rcar_du_plane_setup(plane, (plane->hwindex + 1) % 8);
289 rcar_du_plane_update_base(plane);
293 rcar_du_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
294 struct drm_framebuffer *fb, int crtc_x, int crtc_y,
295 unsigned int crtc_w, unsigned int crtc_h,
296 uint32_t src_x, uint32_t src_y,
297 uint32_t src_w, uint32_t src_h)
299 struct rcar_du_plane *rplane = to_rcar_plane(plane);
300 struct rcar_du_device *rcdu = rplane->group->dev;
301 const struct rcar_du_format_info *format;
302 unsigned int nplanes;
305 format = rcar_du_format_info(fb->pixel_format);
306 if (format == NULL) {
307 dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
312 if (src_w >> 16 != crtc_w || src_h >> 16 != crtc_h) {
313 dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
317 nplanes = rplane->format ? rplane->format->planes : 0;
319 /* Reallocate hardware planes if the number of required planes has
322 if (format->planes != nplanes) {
323 rcar_du_plane_release(rplane);
324 ret = rcar_du_plane_reserve(rplane, format);
330 rplane->format = format;
332 rplane->src_x = src_x >> 16;
333 rplane->src_y = src_y >> 16;
334 rplane->dst_x = crtc_x;
335 rplane->dst_y = crtc_y;
336 rplane->width = crtc_w;
337 rplane->height = crtc_h;
339 rcar_du_plane_compute_base(rplane, fb);
341 if (crtc->mode.flags & DRM_MODE_FLAG_INTERLACE)
342 rplane->interlace_flag = true;
344 rplane->interlace_flag = false;
345 rcar_du_plane_setup(rplane);
347 mutex_lock(&rplane->group->planes.lock);
348 rplane->enabled = true;
349 rcar_du_crtc_update_planes(rplane->crtc);
350 mutex_unlock(&rplane->group->planes.lock);
355 static int rcar_du_plane_disable(struct drm_plane *plane)
357 struct rcar_du_plane *rplane = to_rcar_plane(plane);
359 if (!rplane->enabled)
362 mutex_lock(&rplane->group->planes.lock);
363 rplane->enabled = false;
364 rcar_du_crtc_update_planes(rplane->crtc);
365 mutex_unlock(&rplane->group->planes.lock);
367 rcar_du_plane_release(rplane);
370 rplane->format = NULL;
375 /* Both the .set_property and the .update_plane operations are called with the
376 * mode_config lock held. There is this no need to explicitly protect access to
377 * the alpha and colorkey fields and the mode register.
379 static void rcar_du_plane_set_alpha(struct rcar_du_plane *plane, u32 alpha)
381 if (plane->alpha == alpha)
384 plane->alpha = alpha;
385 if (!plane->enabled || plane->format->fourcc != DRM_FORMAT_XRGB1555)
388 rcar_du_plane_setup_mode(plane, plane->hwindex);
391 static void rcar_du_plane_set_colorkey(struct rcar_du_plane *plane,
394 if (plane->colorkey == colorkey)
397 plane->colorkey = colorkey;
401 rcar_du_plane_setup_mode(plane, plane->hwindex);
404 static void rcar_du_plane_set_zpos(struct rcar_du_plane *plane,
407 mutex_lock(&plane->group->planes.lock);
408 if (plane->zpos == zpos)
415 rcar_du_crtc_update_planes(plane->crtc);
418 mutex_unlock(&plane->group->planes.lock);
421 static int rcar_du_plane_set_property(struct drm_plane *plane,
422 struct drm_property *property,
425 struct rcar_du_plane *rplane = to_rcar_plane(plane);
426 struct rcar_du_group *rgrp = rplane->group;
428 if (property == rgrp->planes.alpha)
429 rcar_du_plane_set_alpha(rplane, value);
430 else if (property == rgrp->planes.colorkey)
431 rcar_du_plane_set_colorkey(rplane, value);
432 else if (property == rgrp->planes.zpos)
433 rcar_du_plane_set_zpos(rplane, value);
440 static const struct drm_plane_funcs rcar_du_plane_funcs = {
441 .update_plane = rcar_du_plane_update,
442 .disable_plane = rcar_du_plane_disable,
443 .set_property = rcar_du_plane_set_property,
444 .destroy = drm_plane_cleanup,
447 static const uint32_t formats[] = {
460 int rcar_du_planes_init(struct rcar_du_group *rgrp)
462 struct rcar_du_planes *planes = &rgrp->planes;
463 struct rcar_du_device *rcdu = rgrp->dev;
466 mutex_init(&planes->lock);
470 drm_property_create_range(rcdu->ddev, 0, "alpha", 0, 255);
471 if (planes->alpha == NULL)
474 /* The color key is expressed as an RGB888 triplet stored in a 32-bit
475 * integer in XRGB8888 format. Bit 24 is used as a flag to disable (0)
476 * or enable source color keying (1).
479 drm_property_create_range(rcdu->ddev, 0, "colorkey",
481 if (planes->colorkey == NULL)
485 drm_property_create_range(rcdu->ddev, 0, "zpos", 1, 7);
486 if (planes->zpos == NULL)
489 for (i = 0; i < ARRAY_SIZE(planes->planes); ++i) {
490 struct rcar_du_plane *plane = &planes->planes[i];
495 plane->colorkey = RCAR_DU_COLORKEY_NONE;
502 int rcar_du_planes_register(struct rcar_du_group *rgrp)
504 struct rcar_du_planes *planes = &rgrp->planes;
505 struct rcar_du_device *rcdu = rgrp->dev;
510 crtcs = ((1 << rcdu->num_crtcs) - 1) & (3 << (2 * rgrp->index));
512 for (i = 0; i < RCAR_DU_NUM_KMS_PLANES; ++i) {
513 struct rcar_du_kms_plane *plane;
515 plane = devm_kzalloc(rcdu->dev, sizeof(*plane), GFP_KERNEL);
519 plane->hwplane = &planes->planes[i + 2];
520 plane->hwplane->zpos = 1;
521 plane->hwplane->interlace_flag = false;
523 ret = drm_plane_init(rcdu->ddev, &plane->plane, crtcs,
524 &rcar_du_plane_funcs, formats,
525 ARRAY_SIZE(formats), false);
529 drm_object_attach_property(&plane->plane.base,
531 drm_object_attach_property(&plane->plane.base,
533 RCAR_DU_COLORKEY_NONE);
534 drm_object_attach_property(&plane->plane.base,