2 * rcar_du_vsp.h -- R-Car Display Unit VSP-Based Compositor
4 * Copyright (C) 2015 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_atomic_helper.h>
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_crtc_helper.h>
18 #include <drm/drm_fb_cma_helper.h>
19 #include <drm/drm_gem_cma_helper.h>
20 #include <drm/drm_plane_helper.h>
22 #include <linux/of_platform.h>
23 #include <linux/videodev2.h>
25 #include <media/vsp1.h>
27 #include "rcar_du_drv.h"
28 #include "rcar_du_kms.h"
29 #include "rcar_du_vsp.h"
31 void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
33 const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode;
34 struct rcar_du_device *rcdu = crtc->group->dev;
35 struct rcar_du_plane_state state = {
40 .crtc_w = mode->hdisplay,
41 .crtc_h = mode->vdisplay,
44 .src_w = mode->hdisplay << 16,
45 .src_h = mode->vdisplay << 16,
47 .format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
48 .source = RCAR_DU_PLANE_VSPD1,
54 if (rcdu->info->gen >= 3)
55 state.hwindex = (crtc->index % 2) ? 2 : 0;
57 state.hwindex = crtc->index % 2;
59 __rcar_du_plane_setup(crtc->group, &state);
61 /* Ensure that the plane source configuration takes effect by requesting
62 * a restart of the group. See rcar_du_plane_atomic_update() for a more
63 * detailed explanation.
65 * TODO: Check whether this is still needed on Gen3.
67 crtc->group->need_restart = true;
69 vsp1_du_setup_lif(crtc->vsp->vsp, mode->hdisplay, mode->vdisplay);
72 void rcar_du_vsp_disable(struct rcar_du_crtc *crtc)
74 vsp1_du_setup_lif(crtc->vsp->vsp, 0, 0);
77 void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc)
79 vsp1_du_atomic_begin(crtc->vsp->vsp);
82 void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc)
84 vsp1_du_atomic_flush(crtc->vsp->vsp);
87 /* Keep the two tables in sync. */
88 static const u32 formats_kms[] = {
117 static const u32 formats_v4l2[] = {
119 V4L2_PIX_FMT_ARGB444,
120 V4L2_PIX_FMT_XRGB444,
121 V4L2_PIX_FMT_ARGB555,
122 V4L2_PIX_FMT_XRGB555,
138 V4L2_PIX_FMT_YUV420M,
139 V4L2_PIX_FMT_YVU420M,
140 V4L2_PIX_FMT_YUV422M,
141 V4L2_PIX_FMT_YVU422M,
142 V4L2_PIX_FMT_YUV444M,
143 V4L2_PIX_FMT_YVU444M,
146 static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
148 struct rcar_du_vsp_plane_state *state =
149 to_rcar_vsp_plane_state(plane->plane.state);
150 struct drm_framebuffer *fb = plane->plane.state->fb;
151 struct vsp1_du_atomic_config cfg = {
153 .pitch = fb->pitches[0],
154 .alpha = state->alpha,
159 cfg.src.left = state->state.src_x >> 16;
160 cfg.src.top = state->state.src_y >> 16;
161 cfg.src.width = state->state.src_w >> 16;
162 cfg.src.height = state->state.src_h >> 16;
164 cfg.dst.left = state->state.crtc_x;
165 cfg.dst.top = state->state.crtc_y;
166 cfg.dst.width = state->state.crtc_w;
167 cfg.dst.height = state->state.crtc_h;
169 for (i = 0; i < state->format->planes; ++i) {
170 struct drm_gem_cma_object *gem;
172 gem = drm_fb_cma_get_gem_obj(fb, i);
173 cfg.mem[i] = gem->paddr + fb->offsets[i];
176 for (i = 0; i < ARRAY_SIZE(formats_kms); ++i) {
177 if (formats_kms[i] == state->format->fourcc) {
178 cfg.pixelformat = formats_v4l2[i];
183 vsp1_du_atomic_update(plane->vsp->vsp, plane->index, &cfg);
186 static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane,
187 struct drm_plane_state *state)
189 struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
190 struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane);
191 struct rcar_du_device *rcdu = rplane->vsp->dev;
193 if (!state->fb || !state->crtc) {
194 rstate->format = NULL;
198 if (state->src_w >> 16 != state->crtc_w ||
199 state->src_h >> 16 != state->crtc_h) {
200 dev_dbg(rcdu->dev, "%s: scaling not supported\n", __func__);
204 rstate->format = rcar_du_format_info(state->fb->pixel_format);
205 if (rstate->format == NULL) {
206 dev_dbg(rcdu->dev, "%s: unsupported format %08x\n", __func__,
207 state->fb->pixel_format);
214 static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane,
215 struct drm_plane_state *old_state)
217 struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane);
219 if (plane->state->crtc)
220 rcar_du_vsp_plane_setup(rplane);
222 vsp1_du_atomic_update(rplane->vsp->vsp, rplane->index, NULL);
225 static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = {
226 .atomic_check = rcar_du_vsp_plane_atomic_check,
227 .atomic_update = rcar_du_vsp_plane_atomic_update,
230 static struct drm_plane_state *
231 rcar_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane)
233 struct rcar_du_vsp_plane_state *state;
234 struct rcar_du_vsp_plane_state *copy;
236 if (WARN_ON(!plane->state))
239 state = to_rcar_vsp_plane_state(plane->state);
240 copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
244 __drm_atomic_helper_plane_duplicate_state(plane, ©->state);
249 static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane,
250 struct drm_plane_state *state)
252 __drm_atomic_helper_plane_destroy_state(state);
253 kfree(to_rcar_vsp_plane_state(state));
256 static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
258 struct rcar_du_vsp_plane_state *state;
261 rcar_du_vsp_plane_atomic_destroy_state(plane, plane->state);
265 state = kzalloc(sizeof(*state), GFP_KERNEL);
270 state->zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
272 plane->state = &state->state;
273 plane->state->plane = plane;
276 static int rcar_du_vsp_plane_atomic_set_property(struct drm_plane *plane,
277 struct drm_plane_state *state, struct drm_property *property,
280 struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
281 struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev;
283 if (property == rcdu->props.alpha)
285 else if (property == rcdu->props.zpos)
293 static int rcar_du_vsp_plane_atomic_get_property(struct drm_plane *plane,
294 const struct drm_plane_state *state, struct drm_property *property,
297 const struct rcar_du_vsp_plane_state *rstate =
298 container_of(state, const struct rcar_du_vsp_plane_state, state);
299 struct rcar_du_device *rcdu = to_rcar_vsp_plane(plane)->vsp->dev;
301 if (property == rcdu->props.alpha)
302 *val = rstate->alpha;
303 else if (property == rcdu->props.zpos)
311 static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
312 .update_plane = drm_atomic_helper_update_plane,
313 .disable_plane = drm_atomic_helper_disable_plane,
314 .reset = rcar_du_vsp_plane_reset,
315 .set_property = drm_atomic_helper_plane_set_property,
316 .destroy = drm_plane_cleanup,
317 .atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state,
318 .atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state,
319 .atomic_set_property = rcar_du_vsp_plane_atomic_set_property,
320 .atomic_get_property = rcar_du_vsp_plane_atomic_get_property,
323 int rcar_du_vsp_init(struct rcar_du_vsp *vsp)
325 struct rcar_du_device *rcdu = vsp->dev;
326 struct platform_device *pdev;
327 struct device_node *np;
331 /* Find the VSP device and initialize it. */
332 np = of_parse_phandle(rcdu->dev->of_node, "vsps", vsp->index);
334 dev_err(rcdu->dev, "vsps node not found\n");
338 pdev = of_find_device_by_node(np);
343 vsp->vsp = &pdev->dev;
345 ret = vsp1_du_init(vsp->vsp);
349 /* The VSP2D (Gen3) has 5 RPFs, but the VSP1D (Gen2) is limited to
352 vsp->num_planes = rcdu->info->gen >= 3 ? 5 : 4;
354 vsp->planes = devm_kcalloc(rcdu->dev, vsp->num_planes,
355 sizeof(*vsp->planes), GFP_KERNEL);
359 for (i = 0; i < vsp->num_planes; ++i) {
360 enum drm_plane_type type = i ? DRM_PLANE_TYPE_OVERLAY
361 : DRM_PLANE_TYPE_PRIMARY;
362 struct rcar_du_vsp_plane *plane = &vsp->planes[i];
367 ret = drm_universal_plane_init(rcdu->ddev, &plane->plane,
369 &rcar_du_vsp_plane_funcs,
371 ARRAY_SIZE(formats_kms), type,
376 drm_plane_helper_add(&plane->plane,
377 &rcar_du_vsp_plane_helper_funcs);
379 if (type == DRM_PLANE_TYPE_PRIMARY)
382 drm_object_attach_property(&plane->plane.base,
383 rcdu->props.alpha, 255);
384 drm_object_attach_property(&plane->plane.base,
385 rcdu->props.zpos, 1);