| Message ID | 20191204094441.5116-4-bibby.hsieh@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/mediatek: fix cursor issue and apply CMDQ in MTK DRM | expand |
Hi, Bibby: On Wed, 2019-12-04 at 17:44 +0800, Bibby Hsieh wrote: > Support to async updates of cursors by using the new atomic > interface for that. > > Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 75 +++++++++++++++++------- > drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 2 + > drivers/gpu/drm/mediatek/mtk_drm_plane.c | 50 ++++++++++++++++ > drivers/gpu/drm/mediatek/mtk_drm_plane.h | 2 + > 4 files changed, 108 insertions(+), 21 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > index 4bc52346093d..92b3b397c6c4 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > @@ -47,6 +47,9 @@ struct mtk_drm_crtc { > struct mtk_disp_mutex *mutex; > unsigned int ddp_comp_nr; > struct mtk_ddp_comp **ddp_comp; > + > + /* lock for display hardware access */ > + struct mutex hw_lock; > }; > > struct mtk_crtc_state { > @@ -417,6 +420,41 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > } > } > > +static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) > +{ > + struct drm_crtc *crtc = &mtk_crtc->base; > + struct mtk_drm_private *priv = crtc->dev->dev_private; > + unsigned int pending_planes = 0; > + int i; > + > + mutex_lock(&mtk_crtc->hw_lock); > + for (i = 0; i < mtk_crtc->layer_nr; i++) { > + struct drm_plane *plane = &mtk_crtc->planes[i]; > + struct mtk_plane_state *plane_state; > + > + plane_state = to_mtk_plane_state(plane->state); > + if (plane_state->pending.dirty) { > + plane_state->pending.config = true; > + plane_state->pending.dirty = false; > + pending_planes |= BIT(i); > + } else if (plane_state->pending.async_dirty) { > + plane_state->pending.config = true; > + plane_state->pending.async_update = false; > + plane_state->pending.async_dirty = false; > + pending_planes |= BIT(i); > + } I think the async plane break the atomic planes. For example, plane 0, plane 1, plane 2 are atomic planes and plane 3 is async plane. When plane 0, plane 1 , plane 2 would be dirty in sequence, and plane 0 get dirty first, but async plane update before plane 1 get dirty, these code would apply plane 0 and plane 3, so this would break the atomic. > + } > + if (pending_planes) > + mtk_crtc->pending_planes = true; > + > + if (priv->data->shadow_register) { > + mtk_disp_mutex_acquire(mtk_crtc->mutex); > + mtk_crtc_ddp_config(crtc); > + mtk_disp_mutex_release(mtk_crtc->mutex); > + } > + mutex_unlock(&mtk_crtc->hw_lock); > +} > + > int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, > struct mtk_plane_state *state) > { > @@ -429,6 +467,20 @@ int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, > return 0; > } > > +void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, > + struct drm_plane_state *new_state) > +{ > + struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); > + const struct drm_plane_helper_funcs *plane_helper_funcs = > + plane->helper_private; > + > + if (!mtk_crtc->enabled) > + return; > + > + plane_helper_funcs->atomic_update(plane, new_state); > + mtk_drm_crtc_hw_config(mtk_crtc); > +} > + > static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc, > struct drm_crtc_state *old_state) > { > @@ -510,34 +562,14 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, > struct drm_crtc_state *old_crtc_state) > { > struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); > - struct mtk_drm_private *priv = crtc->dev->dev_private; > - unsigned int pending_planes = 0; > int i; > > if (mtk_crtc->event) > mtk_crtc->pending_needs_vblank = true; > - for (i = 0; i < mtk_crtc->layer_nr; i++) { > - struct drm_plane *plane = &mtk_crtc->planes[i]; > - struct mtk_plane_state *plane_state; > - > - plane_state = to_mtk_plane_state(plane->state); > - if (plane_state->pending.dirty) { > - plane_state->pending.config = true; > - plane_state->pending.dirty = false; > - pending_planes |= BIT(i); > - } > - } > - if (pending_planes) > - mtk_crtc->pending_planes = true; > if (crtc->state->color_mgmt_changed) > for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) > mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state); > - > - if (priv->data->shadow_register) { > - mtk_disp_mutex_acquire(mtk_crtc->mutex); > - mtk_crtc_ddp_config(crtc); > - mtk_disp_mutex_release(mtk_crtc->mutex); > - } > + mtk_drm_crtc_hw_config(mtk_crtc); > } > > static const struct drm_crtc_funcs mtk_crtc_funcs = { > @@ -729,6 +761,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, > drm_mode_crtc_set_gamma_size(&mtk_crtc->base, MTK_LUT_SIZE); > drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, false, MTK_LUT_SIZE); > priv->num_pipes++; > + mutex_init(&mtk_crtc->hw_lock); > > return 0; > } > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h > index 6afe1c19557a..a2b4677a451c 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h > @@ -21,5 +21,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, > unsigned int path_len); > int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, > struct mtk_plane_state *state); > +void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, > + struct drm_plane_state *plane_state); > > #endif /* MTK_DRM_CRTC_H */ > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c > index cd7c97eb7ee6..6bdb42f068fb 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c > @@ -7,6 +7,7 @@ > #include <drm/drm_atomic.h> > #include <drm/drm_atomic_helper.h> > #include <drm/drm_fourcc.h> > +#include <drm/drm_atomic_uapi.h> > #include <drm/drm_plane_helper.h> > #include <drm/drm_gem_framebuffer_helper.h> > > @@ -70,6 +71,50 @@ static void mtk_drm_plane_destroy_state(struct drm_plane *plane, > kfree(to_mtk_plane_state(state)); > } > > +static int mtk_plane_atomic_async_check(struct drm_plane *plane, > + struct drm_plane_state *state) > +{ > + struct drm_crtc_state *crtc_state; > + > + if (plane != state->crtc->cursor) > + return -EINVAL; > + > + if (!plane->state) > + return -EINVAL; > + > + if (!plane->state->fb) > + return -EINVAL; > + > + if (state->state) > + crtc_state = drm_atomic_get_existing_crtc_state(state->state, > + state->crtc); > + else /* Special case for asynchronous cursor updates. */ > + crtc_state = state->crtc->state; > + > + return drm_atomic_helper_check_plane_state(plane->state, crtc_state, > + DRM_PLANE_HELPER_NO_SCALING, > + DRM_PLANE_HELPER_NO_SCALING, > + true, true); > +} > + > +static void mtk_plane_atomic_async_update(struct drm_plane *plane, > + struct drm_plane_state *new_state) > +{ > + struct mtk_plane_state *state = to_mtk_plane_state(plane->state); > + > + plane->state->crtc_x = new_state->crtc_x; > + plane->state->crtc_y = new_state->crtc_y; > + plane->state->crtc_h = new_state->crtc_h; > + plane->state->crtc_w = new_state->crtc_w; > + plane->state->src_x = new_state->src_x; > + plane->state->src_y = new_state->src_y; > + plane->state->src_h = new_state->src_h; > + plane->state->src_w = new_state->src_w; > + state->pending.async_update = true; > + > + mtk_drm_crtc_async_update(new_state->crtc, plane, new_state); > +} > + > static const struct drm_plane_funcs mtk_plane_funcs = { > .update_plane = drm_atomic_helper_update_plane, > .disable_plane = drm_atomic_helper_disable_plane, > @@ -141,6 +186,9 @@ static void mtk_plane_atomic_update(struct drm_plane *plane, > state->pending.rotation = plane->state->rotation; > wmb(); /* Make sure the above parameters are set before update */ > state->pending.dirty = true; > + > + if (state->pending.async_update) > + state->pending.async_dirty = true; Why do you use two variable to state just one thing? Regards, CK > } > > static void mtk_plane_atomic_disable(struct drm_plane *plane, > @@ -158,6 +206,8 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { > .atomic_check = mtk_plane_atomic_check, > .atomic_update = mtk_plane_atomic_update, > .atomic_disable = mtk_plane_atomic_disable, > + .atomic_async_update = mtk_plane_atomic_async_update, > + .atomic_async_check = mtk_plane_atomic_async_check, > }; > > int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h > index 760885e35b27..41882465dd67 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h > +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h > @@ -22,6 +22,8 @@ struct mtk_plane_pending_state { > unsigned int height; > unsigned int rotation; > bool dirty; > + bool async_dirty; > + bool async_update; > }; > > struct mtk_plane_state {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 4bc52346093d..92b3b397c6c4 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -47,6 +47,9 @@ struct mtk_drm_crtc { struct mtk_disp_mutex *mutex; unsigned int ddp_comp_nr; struct mtk_ddp_comp **ddp_comp; + + /* lock for display hardware access */ + struct mutex hw_lock; }; struct mtk_crtc_state { @@ -417,6 +420,41 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) } } +static void mtk_drm_crtc_hw_config(struct mtk_drm_crtc *mtk_crtc) +{ + struct drm_crtc *crtc = &mtk_crtc->base; + struct mtk_drm_private *priv = crtc->dev->dev_private; + unsigned int pending_planes = 0; + int i; + + mutex_lock(&mtk_crtc->hw_lock); + for (i = 0; i < mtk_crtc->layer_nr; i++) { + struct drm_plane *plane = &mtk_crtc->planes[i]; + struct mtk_plane_state *plane_state; + + plane_state = to_mtk_plane_state(plane->state); + if (plane_state->pending.dirty) { + plane_state->pending.config = true; + plane_state->pending.dirty = false; + pending_planes |= BIT(i); + } else if (plane_state->pending.async_dirty) { + plane_state->pending.config = true; + plane_state->pending.async_update = false; + plane_state->pending.async_dirty = false; + pending_planes |= BIT(i); + } + } + if (pending_planes) + mtk_crtc->pending_planes = true; + + if (priv->data->shadow_register) { + mtk_disp_mutex_acquire(mtk_crtc->mutex); + mtk_crtc_ddp_config(crtc); + mtk_disp_mutex_release(mtk_crtc->mutex); + } + mutex_unlock(&mtk_crtc->hw_lock); +} + int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, struct mtk_plane_state *state) { @@ -429,6 +467,20 @@ int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, return 0; } +void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, + struct drm_plane_state *new_state) +{ + struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); + const struct drm_plane_helper_funcs *plane_helper_funcs = + plane->helper_private; + + if (!mtk_crtc->enabled) + return; + + plane_helper_funcs->atomic_update(plane, new_state); + mtk_drm_crtc_hw_config(mtk_crtc); +} + static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_crtc_state *old_state) { @@ -510,34 +562,14 @@ static void mtk_drm_crtc_atomic_flush(struct drm_crtc *crtc, struct drm_crtc_state *old_crtc_state) { struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc); - struct mtk_drm_private *priv = crtc->dev->dev_private; - unsigned int pending_planes = 0; int i; if (mtk_crtc->event) mtk_crtc->pending_needs_vblank = true; - for (i = 0; i < mtk_crtc->layer_nr; i++) { - struct drm_plane *plane = &mtk_crtc->planes[i]; - struct mtk_plane_state *plane_state; - - plane_state = to_mtk_plane_state(plane->state); - if (plane_state->pending.dirty) { - plane_state->pending.config = true; - plane_state->pending.dirty = false; - pending_planes |= BIT(i); - } - } - if (pending_planes) - mtk_crtc->pending_planes = true; if (crtc->state->color_mgmt_changed) for (i = 0; i < mtk_crtc->ddp_comp_nr; i++) mtk_ddp_gamma_set(mtk_crtc->ddp_comp[i], crtc->state); - - if (priv->data->shadow_register) { - mtk_disp_mutex_acquire(mtk_crtc->mutex); - mtk_crtc_ddp_config(crtc); - mtk_disp_mutex_release(mtk_crtc->mutex); - } + mtk_drm_crtc_hw_config(mtk_crtc); } static const struct drm_crtc_funcs mtk_crtc_funcs = { @@ -729,6 +761,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, drm_mode_crtc_set_gamma_size(&mtk_crtc->base, MTK_LUT_SIZE); drm_crtc_enable_color_mgmt(&mtk_crtc->base, 0, false, MTK_LUT_SIZE); priv->num_pipes++; + mutex_init(&mtk_crtc->hw_lock); return 0; } diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h index 6afe1c19557a..a2b4677a451c 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.h @@ -21,5 +21,7 @@ int mtk_drm_crtc_create(struct drm_device *drm_dev, unsigned int path_len); int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, struct mtk_plane_state *state); +void mtk_drm_crtc_async_update(struct drm_crtc *crtc, struct drm_plane *plane, + struct drm_plane_state *plane_state); #endif /* MTK_DRM_CRTC_H */ diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index cd7c97eb7ee6..6bdb42f068fb 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -7,6 +7,7 @@ #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_fourcc.h> +#include <drm/drm_atomic_uapi.h> #include <drm/drm_plane_helper.h> #include <drm/drm_gem_framebuffer_helper.h> @@ -70,6 +71,50 @@ static void mtk_drm_plane_destroy_state(struct drm_plane *plane, kfree(to_mtk_plane_state(state)); } +static int mtk_plane_atomic_async_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct drm_crtc_state *crtc_state; + + if (plane != state->crtc->cursor) + return -EINVAL; + + if (!plane->state) + return -EINVAL; + + if (!plane->state->fb) + return -EINVAL; + + if (state->state) + crtc_state = drm_atomic_get_existing_crtc_state(state->state, + state->crtc); + else /* Special case for asynchronous cursor updates. */ + crtc_state = state->crtc->state; + + return drm_atomic_helper_check_plane_state(plane->state, crtc_state, + DRM_PLANE_HELPER_NO_SCALING, + DRM_PLANE_HELPER_NO_SCALING, + true, true); +} + +static void mtk_plane_atomic_async_update(struct drm_plane *plane, + struct drm_plane_state *new_state) +{ + struct mtk_plane_state *state = to_mtk_plane_state(plane->state); + + plane->state->crtc_x = new_state->crtc_x; + plane->state->crtc_y = new_state->crtc_y; + plane->state->crtc_h = new_state->crtc_h; + plane->state->crtc_w = new_state->crtc_w; + plane->state->src_x = new_state->src_x; + plane->state->src_y = new_state->src_y; + plane->state->src_h = new_state->src_h; + plane->state->src_w = new_state->src_w; + state->pending.async_update = true; + + mtk_drm_crtc_async_update(new_state->crtc, plane, new_state); +} + static const struct drm_plane_funcs mtk_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, @@ -141,6 +186,9 @@ static void mtk_plane_atomic_update(struct drm_plane *plane, state->pending.rotation = plane->state->rotation; wmb(); /* Make sure the above parameters are set before update */ state->pending.dirty = true; + + if (state->pending.async_update) + state->pending.async_dirty = true; } static void mtk_plane_atomic_disable(struct drm_plane *plane, @@ -158,6 +206,8 @@ static const struct drm_plane_helper_funcs mtk_plane_helper_funcs = { .atomic_check = mtk_plane_atomic_check, .atomic_update = mtk_plane_atomic_update, .atomic_disable = mtk_plane_atomic_disable, + .atomic_async_update = mtk_plane_atomic_async_update, + .atomic_async_check = mtk_plane_atomic_async_check, }; int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h index 760885e35b27..41882465dd67 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h @@ -22,6 +22,8 @@ struct mtk_plane_pending_state { unsigned int height; unsigned int rotation; bool dirty; + bool async_dirty; + bool async_update; }; struct mtk_plane_state {
Support to async updates of cursors by using the new atomic interface for that. Signed-off-by: Bibby Hsieh <bibby.hsieh@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 75 +++++++++++++++++------- drivers/gpu/drm/mediatek/mtk_drm_crtc.h | 2 + drivers/gpu/drm/mediatek/mtk_drm_plane.c | 50 ++++++++++++++++ drivers/gpu/drm/mediatek/mtk_drm_plane.h | 2 + 4 files changed, 108 insertions(+), 21 deletions(-)