Commit 109bd7d5 authored by Lowry Li (Arm Technology China)'s avatar Lowry Li (Arm Technology China) Committed by Liviu Dudau

drm/komeda: Adds zorder support

- Creates the zpos property.
- Implement komeda_crtc_normalize_zpos to replace
drm_atomic_normalize_zpos, reasons as the following:

1. The drm_atomic_normalize_zpos allows to configure same zpos for
different planes, but komeda doesn't support such configuration.
2. For further slave pipline case, Komeda need to calculate the
max_slave_zorder, we will merge such calculation into
komed_crtc_normalize_zpos to save a separated plane_state loop.
3. For feature none-scaling layer_split, which a plane_state will be
assigned to two individual layers(left/right), which requires two
normalize_zpos for this plane, plane_st->normalize_zpos will be used
by left layer, normalize_zpos + 1 for right_layer.

This patch series depends on:
- https://patchwork.freedesktop.org/series/58710/
- https://patchwork.freedesktop.org/series/59000/
- https://patchwork.freedesktop.org/series/59002/
- https://patchwork.freedesktop.org/series/59747/
- https://patchwork.freedesktop.org/series/59915/
- https://patchwork.freedesktop.org/series/60083/
- https://patchwork.freedesktop.org/series/60698/Signed-off-by: default avatarLowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: default avatarJames Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
parent 04e84545
......@@ -100,6 +100,90 @@ static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = {
.atomic_commit_tail = komeda_kms_commit_tail,
};
static int komeda_plane_state_list_add(struct drm_plane_state *plane_st,
struct list_head *zorder_list)
{
struct komeda_plane_state *new = to_kplane_st(plane_st);
struct komeda_plane_state *node, *last;
last = list_empty(zorder_list) ?
NULL : list_last_entry(zorder_list, typeof(*last), zlist_node);
/* Considering the list sequence is zpos increasing, so if list is empty
* or the zpos of new node bigger than the last node in list, no need
* loop and just insert the new one to the tail of the list.
*/
if (!last || (new->base.zpos > last->base.zpos)) {
list_add_tail(&new->zlist_node, zorder_list);
return 0;
}
/* Build the list by zpos increasing */
list_for_each_entry(node, zorder_list, zlist_node) {
if (new->base.zpos < node->base.zpos) {
list_add_tail(&new->zlist_node, &node->zlist_node);
break;
} else if (node->base.zpos == new->base.zpos) {
struct drm_plane *a = node->base.plane;
struct drm_plane *b = new->base.plane;
/* Komeda doesn't support setting a same zpos for
* different planes.
*/
DRM_DEBUG_ATOMIC("PLANE: %s and PLANE: %s are configured same zpos: %d.\n",
a->name, b->name, node->base.zpos);
return -EINVAL;
}
}
return 0;
}
static int komeda_crtc_normalize_zpos(struct drm_crtc *crtc,
struct drm_crtc_state *crtc_st)
{
struct drm_atomic_state *state = crtc_st->state;
struct komeda_plane_state *kplane_st;
struct drm_plane_state *plane_st;
struct drm_framebuffer *fb;
struct drm_plane *plane;
struct list_head zorder_list;
int order = 0, err;
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] calculating normalized zpos values\n",
crtc->base.id, crtc->name);
INIT_LIST_HEAD(&zorder_list);
/* This loop also added all effected planes into the new state */
drm_for_each_plane_mask(plane, crtc->dev, crtc_st->plane_mask) {
plane_st = drm_atomic_get_plane_state(state, plane);
if (IS_ERR(plane_st))
return PTR_ERR(plane_st);
/* Build a list by zpos increasing */
err = komeda_plane_state_list_add(plane_st, &zorder_list);
if (err)
return err;
}
list_for_each_entry(kplane_st, &zorder_list, zlist_node) {
plane_st = &kplane_st->base;
fb = plane_st->fb;
plane = plane_st->plane;
plane_st->normalized_zpos = order++;
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] zpos:%d, normalized zpos: %d\n",
plane->base.id, plane->name,
plane_st->zpos, plane_st->normalized_zpos);
}
crtc_st->zpos_changed = true;
return 0;
}
static int komeda_kms_check(struct drm_device *dev,
struct drm_atomic_state *state)
{
......@@ -111,7 +195,7 @@ static int komeda_kms_check(struct drm_device *dev,
if (err)
return err;
/* komeda need to re-calculate resource assumption in every commit
/* Komeda need to re-calculate resource assumption in every commit
* so need to add all affected_planes (even unchanged) to
* drm_atomic_state.
*/
......@@ -119,6 +203,10 @@ static int komeda_kms_check(struct drm_device *dev,
err = drm_atomic_add_affected_planes(state, crtc);
if (err)
return err;
err = komeda_crtc_normalize_zpos(crtc, new_crtc_st);
if (err)
return err;
}
err = drm_atomic_helper_check_planes(dev, state);
......
......@@ -7,6 +7,7 @@
#ifndef _KOMEDA_KMS_H_
#define _KOMEDA_KMS_H_
#include <linux/list.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
......@@ -46,6 +47,8 @@ struct komeda_plane {
struct komeda_plane_state {
/** @base: &drm_plane_state */
struct drm_plane_state base;
/** @zlist_node: zorder list node */
struct list_head zlist_node;
/* @img_enhancement: on/off image enhancement */
u8 img_enhancement : 1;
......
......@@ -22,7 +22,7 @@ komeda_plane_init_data_flow(struct drm_plane_state *st,
memset(dflow, 0, sizeof(*dflow));
dflow->blending_zorder = st->zpos;
dflow->blending_zorder = st->normalized_zpos;
/* if format doesn't have alpha, fix blend mode to PIXEL_NONE */
dflow->pixel_blend_mode = fb->format->has_alpha ?
......@@ -345,6 +345,10 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,
if (err)
goto cleanup;
err = drm_plane_create_zpos_property(plane, layer->base.id, 0, 8);
if (err)
goto cleanup;
return 0;
cleanup:
komeda_plane_destroy(plane);
......
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