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drm/mediatek: use DRM core's atomic commit helper 

The DRM core atomic helper now supports asynchronous commits natively.
The custom drm implementation isn't needed anymore, remove it.

Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
This commit is contained in:
Bibby Hsieh 2019-12-10 13:05:20 +08:00 committed by CK Hu
parent 138b80cbd7
commit 60b874f642
2 changed files with 5 additions and 88 deletions
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86
drivers/gpu/drm/mediatek/mtk_drm_drv.c
View File

@ -36,89 +36,14 @@
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
static void mtk_atomic_schedule(struct mtk_drm_private *private,
struct drm_atomic_state *state)
{
private->commit.state = state;
schedule_work(&private->commit.work);
}
static void mtk_atomic_complete(struct mtk_drm_private *private,
struct drm_atomic_state *state)
{
struct drm_device *drm = private->drm;
drm_atomic_helper_wait_for_fences(drm, state, false);
/*
* Mediatek drm supports runtime PM, so plane registers cannot be
* written when their crtc is disabled.
*
* The comment for drm_atomic_helper_commit states:
* For drivers supporting runtime PM the recommended sequence is
*
* drm_atomic_helper_commit_modeset_disables(dev, state);
* drm_atomic_helper_commit_modeset_enables(dev, state);
* drm_atomic_helper_commit_planes(dev, state,
* DRM_PLANE_COMMIT_ACTIVE_ONLY);
*
* See the kerneldoc entries for these three functions for more details.
*/
drm_atomic_helper_commit_modeset_disables(drm, state);
drm_atomic_helper_commit_modeset_enables(drm, state);
drm_atomic_helper_commit_planes(drm, state,
DRM_PLANE_COMMIT_ACTIVE_ONLY);
drm_atomic_helper_wait_for_vblanks(drm, state);
drm_atomic_helper_cleanup_planes(drm, state);
drm_atomic_state_put(state);
}
static void mtk_atomic_work(struct work_struct *work)
{
struct mtk_drm_private *private = container_of(work,
struct mtk_drm_private, commit.work);
mtk_atomic_complete(private, private->commit.state);
}
static int mtk_atomic_commit(struct drm_device *drm,
struct drm_atomic_state *state,
bool async)
{
struct mtk_drm_private *private = drm->dev_private;
int ret;
ret = drm_atomic_helper_prepare_planes(drm, state);
if (ret)
return ret;
mutex_lock(&private->commit.lock);
flush_work(&private->commit.work);
ret = drm_atomic_helper_swap_state(state, true);
if (ret) {
mutex_unlock(&private->commit.lock);
drm_atomic_helper_cleanup_planes(drm, state);
return ret;
}
drm_atomic_state_get(state);
if (async)
mtk_atomic_schedule(private, state);
else
mtk_atomic_complete(private, state);
mutex_unlock(&private->commit.lock);
return 0;
}
static const struct drm_mode_config_helper_funcs mtk_drm_mode_config_helpers = {
.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
};
static const struct drm_mode_config_funcs mtk_drm_mode_config_funcs = {
.fb_create = mtk_drm_mode_fb_create,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = mtk_atomic_commit,
.atomic_commit = drm_atomic_helper_commit,
};
static const enum mtk_ddp_comp_id mt2701_mtk_ddp_main[] = {
@ -236,6 +161,7 @@ static int mtk_drm_kms_init(struct drm_device *drm)
drm->mode_config.max_width = 4096;
drm->mode_config.max_height = 4096;
drm->mode_config.funcs = &mtk_drm_mode_config_funcs;
drm->mode_config.helper_private = &mtk_drm_mode_config_helpers;
ret = component_bind_all(drm->dev, drm);
if (ret)
@ -495,8 +421,6 @@ static int mtk_drm_probe(struct platform_device *pdev)
if (!private)
return -ENOMEM;
mutex_init(&private->commit.lock);
INIT_WORK(&private->commit.work, mtk_atomic_work);
private->data = of_device_get_match_data(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

7
drivers/gpu/drm/mediatek/mtk_drm_drv.h
View File

@ -43,13 +43,6 @@ struct mtk_drm_private {
struct device_node *comp_node[DDP_COMPONENT_ID_MAX];
struct mtk_ddp_comp *ddp_comp[DDP_COMPONENT_ID_MAX];
const struct mtk_mmsys_driver_data *data;
struct {
struct drm_atomic_state *state;
struct work_struct work;
struct mutex lock;
} commit;
struct drm_atomic_state *suspend_state;
bool dma_parms_allocated;