// SPDX-License-Identifier: GPL-2.0+
/*
* RZ/G2L Display Unit VSP-Based Compositor
*
* Copyright (C) 2023 Renesas Electronics Corporation
*
* Based on rcar_du_vsp.c
*/
#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 <media/vsp1.h>
#include "rzg2l_du_drv.h"
#include "rzg2l_du_kms.h"
#include "rzg2l_du_vsp.h"
static void rzg2l_du_vsp_complete(void *private, unsigned int status, u32 crc)
{
struct rzg2l_du_crtc *crtc = private;
if (crtc->vblank_enable)
drm_crtc_handle_vblank(&crtc->crtc);
if (status & VSP1_DU_STATUS_COMPLETE)
rzg2l_du_crtc_finish_page_flip(crtc);
drm_crtc_add_crc_entry(&crtc->crtc, false, 0, &crc);
}
void rzg2l_du_vsp_enable(struct rzg2l_du_crtc *crtc)
{
const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode;
struct vsp1_du_lif_config cfg = {
.width = mode->hdisplay,
.height = mode->vdisplay,
.interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE,
.callback = rzg2l_du_vsp_complete,
.callback_data = crtc,
};
vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
}
void rzg2l_du_vsp_disable(struct rzg2l_du_crtc *crtc)
{
vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, NULL);
}
void rzg2l_du_vsp_atomic_flush(struct rzg2l_du_crtc *crtc)
{
struct vsp1_du_atomic_pipe_config cfg = { { 0, } };
vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe, &cfg);
}
struct drm_plane *rzg2l_du_vsp_get_drm_plane(struct rzg2l_du_crtc *crtc,
unsigned int pipe_index)
{
struct rzg2l_du_device *rcdu = crtc->vsp->dev;
struct drm_plane *plane = NULL;
drm_for_each_plane(plane, &rcdu->ddev) {
struct rzg2l_du_vsp_plane *vsp_plane = to_rzg2l_vsp_plane(plane);
if (vsp_plane->index == pipe_index)
break;
}
return plane ? plane : ERR_PTR(-EINVAL);
}
static const u32 rzg2l_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_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,
};
static void rzg2l_du_vsp_plane_setup(struct rzg2l_du_vsp_plane *plane)
{
struct rzg2l_du_vsp_plane_state *state =
to_rzg2l_vsp_plane_state(plane->plane.state);
struct rzg2l_du_crtc *crtc = to_rzg2l_crtc(state->state.crtc);
struct drm_framebuffer *fb = plane->plane.state->fb;
const struct rzg2l_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 = state->format->fourcc;
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) {
struct drm_gem_dma_object *gem;
gem = drm_fb_dma_get_gem_obj(fb, i);
cfg.mem[i] = gem->dma_addr + fb->offsets[i];
}
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;
}
}
format = rzg2l_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);
}
static int __rzg2l_du_vsp_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state,
const struct rzg2l_du_format_info **format)
{
struct drm_crtc_state *crtc_state;
int ret;
if (!state->crtc) {
/*
* The visible field is not reset by the DRM core but only
* updated by drm_atomic_helper_check_plane_state, set it
* manually.
*/
state->visible = false;
*format = NULL;
return 0;
}
crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
ret = drm_atomic_helper_check_plane_state(state, crtc_state,
DRM_PLANE_NO_SCALING,
DRM_PLANE_NO_SCALING,
true, true);
if (ret < 0)
return ret;
if (!state->visible) {
*format = NULL;
return 0;
}
*format = rzg2l_du_format_info(state->fb->format->format);
return 0;
}
static int rzg2l_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 rzg2l_du_vsp_plane_state *rstate = to_rzg2l_vsp_plane_state(new_plane_state);
return __rzg2l_du_vsp_plane_atomic_check(plane, new_plane_state, &rstate->format);
}
static void rzg2l_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 rzg2l_du_vsp_plane *rplane = to_rzg2l_vsp_plane(plane);
struct rzg2l_du_crtc *crtc = to_rzg2l_crtc(old_state->crtc);
if (new_state->visible)
rzg2l_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 rzg2l_du_vsp_plane_helper_funcs = {
.atomic_check = rzg2l_du_vsp_plane_atomic_check,
.atomic_update = rzg2l_du_vsp_plane_atomic_update,
};
static struct drm_plane_state *
rzg2l_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane)
{
struct rzg2l_du_vsp_plane_state *copy;
if (WARN_ON(!plane->state))
return NULL;
copy = kzalloc(sizeof(*copy), GFP_KERNEL);
if (!copy)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, ©->state);
return ©->state;
}
static void rzg2l_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
__drm_atomic_helper_plane_destroy_state(state);
kfree(to_rzg2l_vsp_plane_state(state));
}
static void rzg2l_du_vsp_plane_reset(struct drm_plane *plane)
{
struct rzg2l_du_vsp_plane_state *state;
if (plane->state) {
rzg2l_du_vsp_plane_atomic_destroy_state(plane, plane->state);
plane->state = NULL;
}
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return;
__drm_atomic_helper_plane_reset(plane, &state->state);
}
static const struct drm_plane_funcs rzg2l_du_vsp_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = rzg2l_du_vsp_plane_reset,
.atomic_duplicate_state = rzg2l_du_vsp_plane_atomic_duplicate_state,
.atomic_destroy_state = rzg2l_du_vsp_plane_atomic_destroy_state,
};
static void rzg2l_du_vsp_cleanup(struct drm_device *dev, void *res)
{
struct rzg2l_du_vsp *vsp = res;
put_device(vsp->vsp);
}
int rzg2l_du_vsp_init(struct rzg2l_du_vsp *vsp, struct device_node *np,
unsigned int crtcs)
{
struct rzg2l_du_device *rcdu = vsp->dev;
struct platform_device *pdev;
unsigned int num_crtcs = hweight32(crtcs);
unsigned int num_planes = 2;
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, rzg2l_du_vsp_cleanup, vsp);
if (ret < 0)
return ret;
ret = vsp1_du_init(vsp->vsp);
if (ret < 0)
return ret;
for (i = 0; i < num_planes; ++i) {
enum drm_plane_type type = i < num_crtcs
? DRM_PLANE_TYPE_PRIMARY
: DRM_PLANE_TYPE_OVERLAY;
struct rzg2l_du_vsp_plane *plane;
plane = drmm_universal_plane_alloc(&rcdu->ddev, struct rzg2l_du_vsp_plane,
plane, crtcs, &rzg2l_du_vsp_plane_funcs,
rzg2l_du_vsp_formats,
ARRAY_SIZE(rzg2l_du_vsp_formats),
NULL, type, NULL);
if (IS_ERR(plane))
return PTR_ERR(plane);
plane->vsp = vsp;
plane->index = i;
drm_plane_helper_add(&plane->plane,
&rzg2l_du_vsp_plane_helper_funcs);
}
return 0;
}