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/*
* rcar_du_vsp.h -- R-Car Display Unit VSP-Based Compositor
*
* Copyright (C) 2015 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include <linux/bitops.h>
#include <linux/dma-mapping.h>
#include <linux/of_platform.h>
#include <linux/scatterlist.h>
#include <linux/videodev2.h>
#include <media/vsp1.h>
#include "rcar_du_drv.h"
#include "rcar_du_kms.h"
#include "rcar_du_vsp.h"
static void rcar_du_vsp_complete(void *private, bool completed)
{
struct rcar_du_crtc *crtc = private;
if (crtc->vblank_enable)
drm_crtc_handle_vblank(&crtc->crtc);
if (completed)
rcar_du_crtc_finish_page_flip(crtc);
}
void rcar_du_vsp_enable(struct rcar_du_crtc *crtc)
{
const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode;
struct rcar_du_device *rcdu = crtc->group->dev;
struct vsp1_du_lif_config cfg = {
.width = mode->hdisplay,
.height = mode->vdisplay,
.callback = rcar_du_vsp_complete,
.callback_data = crtc,
};
struct rcar_du_plane_state state = {
.state = {
.alpha = DRM_BLEND_ALPHA_OPAQUE,
.crtc = &crtc->crtc,
.dst.x1 = 0,
.dst.y1 = 0,
.dst.x2 = mode->hdisplay,
.dst.y2 = mode->vdisplay,
.src.x1 = 0,
.src.y1 = 0,
.src.x2 = mode->hdisplay << 16,
.src.y2 = mode->vdisplay << 16,
.zpos = 0,
},
.format = rcar_du_format_info(DRM_FORMAT_ARGB8888),
.source = RCAR_DU_PLANE_VSPD1,
.colorkey = 0,
};
if (rcdu->info->gen >= 3)
state.hwindex = (crtc->index % 2) ? 2 : 0;
else
state.hwindex = crtc->index % 2;
__rcar_du_plane_setup(crtc->group, &state);
/*
* Ensure that the plane source configuration takes effect by requesting
* a restart of the group. See rcar_du_plane_atomic_update() for a more
* detailed explanation.
*
* TODO: Check whether this is still needed on Gen3.
*/
crtc->group->need_restart = true;
vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
}
void rcar_du_vsp_disable(struct rcar_du_crtc *crtc)
{
vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, NULL);
}
void rcar_du_vsp_atomic_begin(struct rcar_du_crtc *crtc)
{
vsp1_du_atomic_begin(crtc->vsp->vsp, crtc->vsp_pipe);
}
void rcar_du_vsp_atomic_flush(struct rcar_du_crtc *crtc)
{
vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe);
}
/* Keep the two tables in sync. */
static const u32 formats_kms[] = {
DRM_FORMAT_RGB332,
DRM_FORMAT_ARGB4444,
DRM_FORMAT_XRGB4444,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_RGB565,
DRM_FORMAT_BGR888,
DRM_FORMAT_RGB888,
DRM_FORMAT_BGRA8888,
DRM_FORMAT_BGRX8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_UYVY,
DRM_FORMAT_VYUY,
DRM_FORMAT_YUYV,
DRM_FORMAT_YVYU,
DRM_FORMAT_NV12,
DRM_FORMAT_NV21,
DRM_FORMAT_NV16,
DRM_FORMAT_NV61,
DRM_FORMAT_YUV420,
DRM_FORMAT_YVU420,
DRM_FORMAT_YUV422,
DRM_FORMAT_YVU422,
DRM_FORMAT_YUV444,
DRM_FORMAT_YVU444,
};
static const u32 formats_v4l2[] = {
V4L2_PIX_FMT_RGB332,
V4L2_PIX_FMT_ARGB444,
V4L2_PIX_FMT_XRGB444,
V4L2_PIX_FMT_ARGB555,
V4L2_PIX_FMT_XRGB555,
V4L2_PIX_FMT_RGB565,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_BGR24,
V4L2_PIX_FMT_ARGB32,
V4L2_PIX_FMT_XRGB32,
V4L2_PIX_FMT_ABGR32,
V4L2_PIX_FMT_XBGR32,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_VYUY,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_YVYU,
V4L2_PIX_FMT_NV12M,
V4L2_PIX_FMT_NV21M,
V4L2_PIX_FMT_NV16M,
V4L2_PIX_FMT_NV61M,
V4L2_PIX_FMT_YUV420M,
V4L2_PIX_FMT_YVU420M,
V4L2_PIX_FMT_YUV422M,
V4L2_PIX_FMT_YVU422M,
V4L2_PIX_FMT_YUV444M,
V4L2_PIX_FMT_YVU444M,
};
static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane)
{
struct rcar_du_vsp_plane_state *state =
to_rcar_vsp_plane_state(plane->plane.state);
struct rcar_du_crtc *crtc = to_rcar_crtc(state->state.crtc);
struct drm_framebuffer *fb = plane->plane.state->fb;
struct vsp1_du_atomic_config cfg = {
.pixelformat = 0,
.pitch = fb->pitches[0],
.alpha = state->state.alpha >> 8,
.zpos = state->state.zpos,
};
unsigned int i;
cfg.src.left = state->state.src.x1 >> 16;
cfg.src.top = state->state.src.y1 >> 16;
cfg.src.width = drm_rect_width(&state->state.src) >> 16;
cfg.src.height = drm_rect_height(&state->state.src) >> 16;
cfg.dst.left = state->state.dst.x1;
cfg.dst.top = state->state.dst.y1;
cfg.dst.width = drm_rect_width(&state->state.dst);
cfg.dst.height = drm_rect_height(&state->state.dst);
for (i = 0; i < state->format->planes; ++i)
cfg.mem[i] = sg_dma_address(state->sg_tables[i].sgl)
+ fb->offsets[i];
for (i = 0; i < ARRAY_SIZE(formats_kms); ++i) {
if (formats_kms[i] == state->format->fourcc) {
cfg.pixelformat = formats_v4l2[i];
break;
}
}
vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe,
plane->index, &cfg);
}
static int rcar_du_vsp_plane_prepare_fb(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp;
struct rcar_du_device *rcdu = vsp->dev;
unsigned int i;
int ret;
/*
* There's no need to prepare (and unprepare) the framebuffer when the
* plane is not visible, as it will not be displayed.
*/
if (!state->visible)
return 0;
for (i = 0; i < rstate->format->planes; ++i) {
struct drm_gem_cma_object *gem =
drm_fb_cma_get_gem_obj(state->fb, i);
struct sg_table *sgt = &rstate->sg_tables[i];
ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr, gem->paddr,
gem->base.size);
if (ret)
goto fail;
ret = vsp1_du_map_sg(vsp->vsp, sgt);
if (!ret) {
sg_free_table(sgt);
ret = -ENOMEM;
goto fail;
}
}
return 0;
fail:
while (i--) {
struct sg_table *sgt = &rstate->sg_tables[i];
vsp1_du_unmap_sg(vsp->vsp, sgt);
sg_free_table(sgt);
}
return ret;
}
static void rcar_du_vsp_plane_cleanup_fb(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
struct rcar_du_vsp *vsp = to_rcar_vsp_plane(plane)->vsp;
unsigned int i;
if (!state->visible)
return;
for (i = 0; i < rstate->format->planes; ++i) {
struct sg_table *sgt = &rstate->sg_tables[i];
vsp1_du_unmap_sg(vsp->vsp, sgt);
sg_free_table(sgt);
}
}
static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(state);
return __rcar_du_plane_atomic_check(plane, state, &rstate->format);
}
static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane);
struct rcar_du_crtc *crtc = to_rcar_crtc(old_state->crtc);
if (plane->state->visible)
rcar_du_vsp_plane_setup(rplane);
else
vsp1_du_atomic_update(rplane->vsp->vsp, crtc->vsp_pipe,
rplane->index, NULL);
}
static const struct drm_plane_helper_funcs rcar_du_vsp_plane_helper_funcs = {
.prepare_fb = rcar_du_vsp_plane_prepare_fb,
.cleanup_fb = rcar_du_vsp_plane_cleanup_fb,
.atomic_check = rcar_du_vsp_plane_atomic_check,
.atomic_update = rcar_du_vsp_plane_atomic_update,
};
static struct drm_plane_state *
rcar_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane)
{
struct rcar_du_vsp_plane_state *state;
struct rcar_du_vsp_plane_state *copy;
if (WARN_ON(!plane->state))
return NULL;
state = to_rcar_vsp_plane_state(plane->state);
copy = kmemdup(state, sizeof(*state), GFP_KERNEL);
if (copy == NULL)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, ©->state);
return ©->state;
}
static void rcar_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
__drm_atomic_helper_plane_destroy_state(state);
kfree(to_rcar_vsp_plane_state(state));
}
static void rcar_du_vsp_plane_reset(struct drm_plane *plane)
{
struct rcar_du_vsp_plane_state *state;
if (plane->state) {
rcar_du_vsp_plane_atomic_destroy_state(plane, plane->state);
plane->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL)
return;
state->state.alpha = DRM_BLEND_ALPHA_OPAQUE;
state->state.zpos = plane->type == DRM_PLANE_TYPE_PRIMARY ? 0 : 1;
plane->state = &state->state;
plane->state->plane = plane;
}
static const struct drm_plane_funcs rcar_du_vsp_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = rcar_du_vsp_plane_reset,
.destroy = drm_plane_cleanup,
.atomic_duplicate_state = rcar_du_vsp_plane_atomic_duplicate_state,
.atomic_destroy_state = rcar_du_vsp_plane_atomic_destroy_state,
};
int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np,
unsigned int crtcs)
{
struct rcar_du_device *rcdu = vsp->dev;
struct platform_device *pdev;
unsigned int num_crtcs = hweight32(crtcs);
unsigned int i;
int ret;
/* Find the VSP device and initialize it. */
pdev = of_find_device_by_node(np);
if (!pdev)
return -ENXIO;
vsp->vsp = &pdev->dev;
ret = vsp1_du_init(vsp->vsp);
if (ret < 0)
return ret;
/*
* The VSP2D (Gen3) has 5 RPFs, but the VSP1D (Gen2) is limited to
* 4 RPFs.
*/
vsp->num_planes = rcdu->info->gen >= 3 ? 5 : 4;
vsp->planes = devm_kcalloc(rcdu->dev, vsp->num_planes,
sizeof(*vsp->planes), GFP_KERNEL);
if (!vsp->planes)
return -ENOMEM;
for (i = 0; i < vsp->num_planes; ++i) {
enum drm_plane_type type = i < num_crtcs
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY;
struct rcar_du_vsp_plane *plane = &vsp->planes[i];
plane->vsp = vsp;
plane->index = i;
ret = drm_universal_plane_init(rcdu->ddev, &plane->plane, crtcs,
&rcar_du_vsp_plane_funcs,
formats_kms,
ARRAY_SIZE(formats_kms),
NULL, type, NULL);
if (ret < 0)
return ret;
drm_plane_helper_add(&plane->plane,
&rcar_du_vsp_plane_helper_funcs);
if (type == DRM_PLANE_TYPE_PRIMARY)
continue;
drm_plane_create_alpha_property(&plane->plane);
drm_plane_create_zpos_property(&plane->plane, 1, 1,
vsp->num_planes - 1);
}
return 0;
}
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