// SPDX-License-Identifier: GPL-2.0+
/*
* R-Car Display Unit VSP-Based Compositor
*
* Copyright (C) 2015 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart ([email protected])
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_blend.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fb_dma_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_atomic_helper.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_vblank.h>
#include <linux/bitops.h>
#include <linux/dma-mapping.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/scatterlist.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/vsp1.h>
#include "rcar_du_drv.h"
#include "rcar_du_kms.h"
#include "rcar_du_vsp.h"
#include "rcar_du_writeback.h"
static void rcar_du_vsp_complete(void *private, unsigned int status, u32 crc)
{
struct rcar_du_crtc *crtc = private;
if (crtc->vblank_enable)
drm_crtc_handle_vblank(&crtc->crtc);
if (status & VSP1_DU_STATUS_COMPLETE)
rcar_du_crtc_finish_page_flip(crtc);
if (status & VSP1_DU_STATUS_WRITEBACK)
rcar_du_writeback_complete(crtc);
drm_crtc_add_crc_entry(&crtc->crtc, false, 0, &crc);
}
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->dev;
struct vsp1_du_lif_config cfg = {
.width = mode->hdisplay,
.height = mode->vdisplay,
.interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE,
.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_XRGB8888),
.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);
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)
{
struct vsp1_du_atomic_pipe_config cfg = { { 0, } };
struct rcar_du_crtc_state *state;
state = to_rcar_crtc_state(crtc->crtc.state);
cfg.crc = state->crc;
rcar_du_writeback_setup(crtc, &cfg.writeback);
vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
}
static const u32 rcar_du_vsp_formats[] = {
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_ABGR8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_UYVY,
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,
};
/*
* Gen4 supports the same formats as above, and additionally 2-10-10-10 RGB
* formats and Y210 & Y212 formats.
*/
static const u32 rcar_du_vsp_formats_gen4[] = {
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_ABGR8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_RGBX1010102,
DRM_FORMAT_RGBA1010102,
DRM_FORMAT_ARGB2101010,
DRM_FORMAT_UYVY,
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,
DRM_FORMAT_Y210,
DRM_FORMAT_Y212,
};
static u32 rcar_du_vsp_state_get_format(struct rcar_du_vsp_plane_state *state)
{
u32 fourcc = state->format->fourcc;
if (state->state.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) {
switch (fourcc) {
case DRM_FORMAT_ARGB1555:
fourcc = DRM_FORMAT_XRGB1555;
break;
case DRM_FORMAT_ARGB4444:
fourcc = DRM_FORMAT_XRGB4444;
break;
case DRM_FORMAT_ARGB8888:
fourcc = DRM_FORMAT_XRGB8888;
break;
case DRM_FORMAT_ABGR8888:
fourcc = DRM_FORMAT_XBGR8888;
break;
case DRM_FORMAT_BGRA8888:
fourcc = DRM_FORMAT_BGRX8888;
break;
case DRM_FORMAT_RGBA1010102:
fourcc = DRM_FORMAT_RGBX1010102;
break;
}
}
return fourcc;
}
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;
const struct rcar_du_format_info *format;
struct vsp1_du_atomic_config cfg = {
.pixelformat = 0,
.pitch = fb->pitches[0],
.alpha = state->state.alpha >> 8,
.zpos = state->state.zpos,
};
u32 fourcc = rcar_du_vsp_state_get_format(state);
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];
format = rcar_du_format_info(fourcc);
cfg.pixelformat = format->v4l2;
cfg.premult = state->state.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI;
vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe,
plane->index, &cfg);
}
int rcar_du_vsp_map_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
struct sg_table sg_tables[3])
{
struct rcar_du_device *rcdu = vsp->dev;
unsigned int i, j;
int ret;
for (i = 0; i < fb->format->num_planes; ++i) {
struct drm_gem_dma_object *gem = drm_fb_dma_get_gem_obj(fb, i);
struct sg_table *sgt = &sg_tables[i];
if (gem->sgt) {
struct scatterlist *src;
struct scatterlist *dst;
/*
* If the GEM buffer has a scatter gather table, it has
* been imported from a dma-buf and has no physical
* address as it might not be physically contiguous.
* Copy the original scatter gather table to map it to
* the VSP.
*/
ret = sg_alloc_table(sgt, gem->sgt->orig_nents,
GFP_KERNEL);
if (ret)
goto fail;
src = gem->sgt->sgl;
dst = sgt->sgl;
for (j = 0; j < gem->sgt->orig_nents; ++j) {
sg_set_page(dst, sg_page(src), src->length,
src->offset);
src = sg_next(src);
dst = sg_next(dst);
}
} else {
ret = dma_get_sgtable(rcdu->dev, sgt, gem->vaddr,
gem->dma_addr, gem->base.size);
if (ret)
goto fail;
}
ret = vsp1_du_map_sg(vsp->vsp, sgt);
if (ret) {
sg_free_table(sgt);
goto fail;
}
}
return 0;
fail:
while (i--) {
struct sg_table *sgt = &sg_tables[i];
vsp1_du_unmap_sg(vsp->vsp, sgt);
sg_free_table(sgt);
}
return ret;
}
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;
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;
ret = rcar_du_vsp_map_fb(vsp, state->fb, rstate->sg_tables);
if (ret < 0)
return ret;
return drm_gem_plane_helper_prepare_fb(plane, state);
}
void rcar_du_vsp_unmap_fb(struct rcar_du_vsp *vsp, struct drm_framebuffer *fb,
struct sg_table sg_tables[3])
{
unsigned int i;
for (i = 0; i < fb->format->num_planes; ++i) {
struct sg_table *sgt = &sg_tables[i];
vsp1_du_unmap_sg(vsp->vsp, sgt);
sg_free_table(sgt);
}
}
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;
if (!state->visible)
return;
rcar_du_vsp_unmap_fb(vsp, state->fb, rstate->sg_tables);
}
static int rcar_du_vsp_plane_atomic_check(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
plane);
struct rcar_du_vsp_plane_state *rstate = to_rcar_vsp_plane_state(new_plane_state);
return __rcar_du_plane_atomic_check(plane, new_plane_state,
&rstate->format);
}
static void rcar_du_vsp_plane_atomic_update(struct drm_plane *plane,
struct drm_atomic_state *state)
{
struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
struct rcar_du_vsp_plane *rplane = to_rcar_vsp_plane(plane);
struct rcar_du_crtc *crtc = to_rcar_crtc(old_state->crtc);
if (new_state->visible)
rcar_du_vsp_plane_setup(rplane);
else if (old_state->crtc)
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 *copy;
if (WARN_ON(!plane->state))
return NULL;
copy = kzalloc(sizeof(*copy), 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;
__drm_atomic_helper_plane_reset(plane, &state->state);
}
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,
};
static void rcar_du_vsp_cleanup(struct drm_device *dev, void *res)
{
struct rcar_du_vsp *vsp = res;
unsigned int i;
for (i = 0; i < vsp->num_planes; ++i) {
struct rcar_du_vsp_plane *plane = &vsp->planes[i];
drm_plane_cleanup(&plane->plane);
}
kfree(vsp->planes);
put_device(vsp->vsp);
}
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 num_planes;
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 = drmm_add_action_or_reset(&rcdu->ddev, rcar_du_vsp_cleanup, vsp);
if (ret < 0)
return ret;
ret = vsp1_du_init(vsp->vsp);
if (ret < 0)
return ret;
num_planes = rcdu->info->num_rpf;
vsp->planes = kcalloc(num_planes, sizeof(*vsp->planes), GFP_KERNEL);
if (!vsp->planes)
return -ENOMEM;
for (i = 0; i < 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];
unsigned int num_formats;
const u32 *formats;
if (rcdu->info->gen < 4) {
num_formats = ARRAY_SIZE(rcar_du_vsp_formats);
formats = rcar_du_vsp_formats;
} else {
num_formats = ARRAY_SIZE(rcar_du_vsp_formats_gen4);
formats = rcar_du_vsp_formats_gen4;
}
plane->vsp = vsp;
plane->index = i;
ret = drm_universal_plane_init(&rcdu->ddev, &plane->plane,
crtcs, &rcar_du_vsp_plane_funcs,
formats, num_formats,
NULL, type, NULL);
if (ret < 0)
return ret;
drm_plane_helper_add(&plane->plane,
&rcar_du_vsp_plane_helper_funcs);
drm_plane_create_alpha_property(&plane->plane);
drm_plane_create_zpos_property(&plane->plane, i, 0,
num_planes - 1);
drm_plane_create_blend_mode_property(&plane->plane,
BIT(DRM_MODE_BLEND_PIXEL_NONE) |
BIT(DRM_MODE_BLEND_PREMULTI) |
BIT(DRM_MODE_BLEND_COVERAGE));
vsp->num_planes++;
}
return 0;
}
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