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/*
* Copyright (C) STMicroelectronics SA 2014
* Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
* Fabien Dessenne <fabien.dessenne@st.com>
* for STMicroelectronics.
* License terms: GNU General Public License (GPL), version 2
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include "sti_compositor.h"
#include "sti_drm_drv.h"
#include "sti_drm_plane.h"
#include "sti_vtg.h"
/* (Background) < GDP0 < GDP1 < VID0 < VID1 < GDP2 < GDP3 < (ForeGround) */
enum sti_layer_desc sti_layer_default_zorder[] = {
STI_GDP_0,
STI_GDP_1,
STI_VID_0,
STI_VID_1,
STI_GDP_2,
STI_GDP_3,
};
static int
sti_drm_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb, int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h)
{
struct sti_layer *layer = to_sti_layer(plane);
struct sti_mixer *mixer = to_sti_mixer(crtc);
int res;
DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
crtc->base.id, sti_mixer_to_str(mixer),
plane->base.id, sti_layer_to_str(layer));
DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", crtc_w, crtc_h, crtc_x, crtc_y);
res = sti_mixer_set_layer_depth(mixer, layer);
if (res) {
DRM_ERROR("Can not set layer depth\n");
return res;
}
/* src_x are in 16.16 format. */
res = sti_layer_prepare(layer, crtc, fb,
&crtc->mode, mixer->id,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x >> 16, src_y >> 16,
src_w >> 16, src_h >> 16);
if (res) {
DRM_ERROR("Layer prepare failed\n");
return res;
}
res = sti_layer_commit(layer);
if (res) {
DRM_ERROR("Layer commit failed\n");
return res;
}
res = sti_mixer_set_layer_status(mixer, layer, true);
if (res) {
DRM_ERROR("Can not enable layer at mixer\n");
return res;
}
return 0;
}
static int sti_drm_disable_plane(struct drm_plane *plane)
{
struct sti_layer *layer;
struct sti_mixer *mixer;
int lay_res, mix_res;
if (!plane->crtc) {
DRM_DEBUG_DRIVER("drm plane:%d not enabled\n", plane->base.id);
return 0;
}
layer = to_sti_layer(plane);
mixer = to_sti_mixer(plane->crtc);
DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
plane->crtc->base.id, sti_mixer_to_str(mixer),
plane->base.id, sti_layer_to_str(layer));
/* Disable layer at mixer level */
mix_res = sti_mixer_set_layer_status(mixer, layer, false);
if (mix_res)
DRM_ERROR("Can not disable layer at mixer\n");
/* Wait a while to be sure that a Vsync event is received */
msleep(WAIT_NEXT_VSYNC_MS);
/* Then disable layer itself */
lay_res = sti_layer_disable(layer);
if (lay_res)
DRM_ERROR("Layer disable failed\n");
if (lay_res || mix_res)
return -EINVAL;
return 0;
}
static void sti_drm_plane_destroy(struct drm_plane *plane)
{
DRM_DEBUG_DRIVER("\n");
drm_plane_helper_disable(plane);
drm_plane_cleanup(plane);
}
static int sti_drm_plane_set_property(struct drm_plane *plane,
struct drm_property *property,
uint64_t val)
{
struct drm_device *dev = plane->dev;
struct sti_drm_private *private = dev->dev_private;
struct sti_layer *layer = to_sti_layer(plane);
DRM_DEBUG_DRIVER("\n");
if (property == private->plane_zorder_property) {
layer->zorder = val;
return 0;
}
return -EINVAL;
}
static struct drm_plane_funcs sti_drm_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = sti_drm_plane_destroy,
.set_property = sti_drm_plane_set_property,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
static int sti_drm_plane_prepare_fb(struct drm_plane *plane,
struct drm_framebuffer *fb,
const struct drm_plane_state *new_state)
{
return 0;
}
static void sti_drm_plane_cleanup_fb(struct drm_plane *plane,
struct drm_framebuffer *fb,
const struct drm_plane_state *old_fb)
{
}
static int sti_drm_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
return 0;
}
static void sti_drm_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *oldstate)
{
struct drm_plane_state *state = plane->state;
sti_drm_update_plane(plane, state->crtc, state->fb,
state->crtc_x, state->crtc_y,
state->crtc_w, state->crtc_h,
state->src_x, state->src_y,
state->src_w, state->src_h);
}
static void sti_drm_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *oldstate)
{
sti_drm_disable_plane(plane);
}
static const struct drm_plane_helper_funcs sti_drm_plane_helpers_funcs = {
.prepare_fb = sti_drm_plane_prepare_fb,
.cleanup_fb = sti_drm_plane_cleanup_fb,
.atomic_check = sti_drm_plane_atomic_check,
.atomic_update = sti_drm_plane_atomic_update,
.atomic_disable = sti_drm_plane_atomic_disable,
};
static void sti_drm_plane_attach_zorder_property(struct drm_plane *plane)
{
struct drm_device *dev = plane->dev;
struct sti_drm_private *private = dev->dev_private;
struct drm_property *prop;
struct sti_layer *layer = to_sti_layer(plane);
prop = private->plane_zorder_property;
if (!prop) {
prop = drm_property_create_range(dev, 0, "zpos", 1,
GAM_MIXER_NB_DEPTH_LEVEL);
if (!prop)
return;
private->plane_zorder_property = prop;
}
drm_object_attach_property(&plane->base, prop, layer->zorder);
}
struct drm_plane *sti_drm_plane_init(struct drm_device *dev,
struct sti_layer *layer,
unsigned int possible_crtcs,
enum drm_plane_type type)
{
int err, i;
err = drm_universal_plane_init(dev, &layer->plane, possible_crtcs,
&sti_drm_plane_funcs,
sti_layer_get_formats(layer),
sti_layer_get_nb_formats(layer), type);
if (err) {
DRM_ERROR("Failed to initialize plane\n");
return NULL;
}
drm_plane_helper_add(&layer->plane, &sti_drm_plane_helpers_funcs);
for (i = 0; i < ARRAY_SIZE(sti_layer_default_zorder); i++)
if (sti_layer_default_zorder[i] == layer->desc)
break;
layer->zorder = i + 1;
if (type == DRM_PLANE_TYPE_OVERLAY)
sti_drm_plane_attach_zorder_property(&layer->plane);
DRM_DEBUG_DRIVER("drm plane:%d mapped to %s with zorder:%llu\n",
layer->plane.base.id,
sti_layer_to_str(layer), layer->zorder);
return &layer->plane;
}
EXPORT_SYMBOL(sti_drm_plane_init);
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