Op 12-12-16 om 21:35 schreef ville.syrj...@linux.intel.com:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
> In a lot of place we wish to know which planes on the crtc are actually
> visible, or how many of them there are. Let's start tracking that in a
> bitmask in the crtc state.
>
> We already track enabled planes (ie. ones with an fb and crtc specified by
> the user) but that's not quite the same thing as enabled planes may
> still end up being invisible due to clipping and whatnot.
>
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
> drivers/gpu/drm/i915/intel_atomic_plane.c | 6 +++
> drivers/gpu/drm/i915/intel_display.c | 79
> +++++++++++++++++++++----------
> drivers/gpu/drm/i915/intel_drv.h | 3 ++
> 3 files changed, 64 insertions(+), 24 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c
> b/drivers/gpu/drm/i915/intel_atomic_plane.c
> index dbe9fb41ae53..7ec12edda4d4 100644
> --- a/drivers/gpu/drm/i915/intel_atomic_plane.c
> +++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
> @@ -181,6 +181,12 @@ static int intel_plane_atomic_check(struct drm_plane
> *plane,
> if (ret)
> return ret;
>
> + /* FIXME pre-g4x don't work like this */
> + if (intel_state->base.visible)
> + crtc_state->active_planes |= BIT(intel_plane->id);
> + else
> + crtc_state->active_planes &= ~BIT(intel_plane->id);
> +
> return intel_plane_atomic_calc_changes(&crtc_state->base, state);
> }
>
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index bc1af87789bc..3f027341b0f3 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -2741,6 +2741,29 @@ update_state_fb(struct drm_plane *plane)
> }
>
> static void
> +intel_set_plane_visible(struct intel_crtc_state *crtc_state,
> + struct intel_plane_state *plane_state,
> + bool visible)
> +{
> + struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
> +
> + plane_state->base.visible = visible;
> +
> + /* FIXME pre-g4x don't work like this */
> + if (visible) {
> + crtc_state->base.plane_mask |=
> BIT(drm_plane_index(&plane->base));
> + crtc_state->active_planes |= BIT(plane->id);
> + } else {
> + crtc_state->base.plane_mask &=
> ~BIT(drm_plane_index(&plane->base));
> + crtc_state->active_planes &= ~BIT(plane->id);
> + }
> +
> + DRM_DEBUG_KMS("%s active planes 0x%x\n",
> + crtc_state->base.crtc->name,
> + crtc_state->active_planes);
> +}
> +
> +static void
> intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
> struct intel_initial_plane_config *plane_config)
> {
> @@ -2798,8 +2821,9 @@ intel_find_initial_plane_obj(struct intel_crtc
> *intel_crtc,
> * simplest solution is to just disable the primary plane now and
> * pretend the BIOS never had it enabled.
> */
> - to_intel_plane_state(plane_state)->base.visible = false;
> - crtc_state->plane_mask &= ~(1 << drm_plane_index(primary));
> + intel_set_plane_visible(to_intel_crtc_state(crtc_state),
> + to_intel_plane_state(plane_state),
> + false);
> intel_pre_disable_primary_noatomic(&intel_crtc->base);
> intel_plane->disable_plane(primary, &intel_crtc->base);
>
> @@ -2826,7 +2850,11 @@ intel_find_initial_plane_obj(struct intel_crtc
> *intel_crtc,
> drm_framebuffer_reference(fb);
> primary->fb = primary->state->fb = fb;
> primary->crtc = primary->state->crtc = &intel_crtc->base;
> - intel_crtc->base.state->plane_mask |= (1 << drm_plane_index(primary));
> +
> + intel_set_plane_visible(to_intel_crtc_state(intel_crtc->base.state),
> + to_intel_plane_state(primary->state),
> + true);
> +
> atomic_or(to_intel_plane(primary)->frontbuffer_bit,
> &obj->frontbuffer_bits);
> }
> @@ -12440,11 +12468,11 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> struct intel_crtc_state *pipe_config = to_intel_crtc_state(crtc_state);
> struct drm_crtc *crtc = crtc_state->crtc;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> - struct drm_plane *plane = plane_state->plane;
> + struct intel_plane *plane = to_intel_plane(plane_state->plane);
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = to_i915(dev);
> struct intel_plane_state *old_plane_state =
> - to_intel_plane_state(plane->state);
> + to_intel_plane_state(plane->base.state);
> bool mode_changed = needs_modeset(crtc_state);
> bool was_crtc_enabled = crtc->state->active;
> bool is_crtc_enabled = crtc_state->active;
> @@ -12452,7 +12480,7 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> struct drm_framebuffer *fb = plane_state->fb;
> int ret;
>
> - if (INTEL_GEN(dev_priv) >= 9 && plane->type != DRM_PLANE_TYPE_CURSOR) {
> + if (INTEL_GEN(dev_priv) >= 9 && plane->id != PLANE_CURSOR) {
> ret = skl_update_scaler_plane(
> to_intel_crtc_state(crtc_state),
> to_intel_plane_state(plane_state));
> @@ -12476,8 +12504,10 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> * per-plane wm computation to the .check_plane() hook, and
> * only combine the results from all planes in the current place?
> */
> - if (!is_crtc_enabled)
> + if (!is_crtc_enabled) {
> to_intel_plane_state(plane_state)->base.visible = visible =
> false;
> + to_intel_crtc_state(crtc_state)->active_planes &=
> ~BIT(plane->id);
> + }
>
> if (!was_visible && !visible)
> return 0;
> @@ -12489,13 +12519,12 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> turn_on = visible && (!was_visible || mode_changed);
>
> DRM_DEBUG_ATOMIC("[CRTC:%d:%s] has [PLANE:%d:%s] with fb %i\n",
> - intel_crtc->base.base.id,
> - intel_crtc->base.name,
> - plane->base.id, plane->name,
> + intel_crtc->base.base.id, intel_crtc->base.name,
> + plane->base.base.id, plane->base.name,
> fb ? fb->base.id : -1);
>
> DRM_DEBUG_ATOMIC("[PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms
> %i\n",
> - plane->base.id, plane->name,
> + plane->base.base.id, plane->base.name,
> was_visible, visible,
> turn_off, turn_on, mode_changed);
>
> @@ -12503,15 +12532,15 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> pipe_config->update_wm_pre = true;
>
> /* must disable cxsr around plane enable/disable */
> - if (plane->type != DRM_PLANE_TYPE_CURSOR)
> + if (plane->id != PLANE_CURSOR)
> pipe_config->disable_cxsr = true;
> } else if (turn_off) {
> pipe_config->update_wm_post = true;
>
> /* must disable cxsr around plane enable/disable */
> - if (plane->type != DRM_PLANE_TYPE_CURSOR)
> + if (plane->id != PLANE_CURSOR)
> pipe_config->disable_cxsr = true;
> - } else if (intel_wm_need_update(plane, plane_state)) {
> + } else if (intel_wm_need_update(&plane->base, plane_state)) {
> /* FIXME bollocks */
> pipe_config->update_wm_pre = true;
> pipe_config->update_wm_post = true;
> @@ -12523,7 +12552,7 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> to_intel_crtc_state(crtc_state)->wm.need_postvbl_update = true;
>
> if (visible || was_visible)
> - pipe_config->fb_bits |= to_intel_plane(plane)->frontbuffer_bit;
> + pipe_config->fb_bits |= plane->frontbuffer_bit;
>
> /*
> * WaCxSRDisabledForSpriteScaling:ivb
> @@ -12531,7 +12560,7 @@ int intel_plane_atomic_calc_changes(struct
> drm_crtc_state *crtc_state,
> * cstate->update_wm was already set above, so this flag will
> * take effect when we commit and program watermarks.
> */
> - if (plane->type == DRM_PLANE_TYPE_OVERLAY && IS_IVYBRIDGE(dev_priv) &&
> + if (plane->id == PLANE_SPRITE0 && IS_IVYBRIDGE(dev_priv) &&
> needs_scaling(to_intel_plane_state(plane_state)) &&
> !needs_scaling(old_plane_state))
> pipe_config->disable_lp_wm = true;
> @@ -16876,15 +16905,14 @@ static bool primary_get_hw_state(struct intel_plane
> *plane)
> /* FIXME read out full plane state for all planes */
> static void readout_plane_state(struct intel_crtc *crtc)
> {
> - struct drm_plane *primary = crtc->base.primary;
> - struct intel_plane_state *plane_state =
> - to_intel_plane_state(primary->state);
> + struct intel_plane *primary = to_intel_plane(crtc->base.primary);
> + bool visible;
>
> - plane_state->base.visible = crtc->active &&
> - primary_get_hw_state(to_intel_plane(primary));
> + visible = crtc->active && primary_get_hw_state(primary);
>
> - if (plane_state->base.visible)
> - crtc->base.state->plane_mask |= 1 << drm_plane_index(primary);
> + intel_set_plane_visible(to_intel_crtc_state(crtc->base.state),
> + to_intel_plane_state(primary->base.state),
> + visible);
> }
>
> static void intel_modeset_readout_hw_state(struct drm_device *dev)
> @@ -17171,7 +17199,10 @@ void intel_modeset_gem_init(struct drm_device *dev)
> c->primary->fb = NULL;
> c->primary->crtc = c->primary->state->crtc = NULL;
> update_state_fb(c->primary);
> - c->state->plane_mask &= ~(1 <<
> drm_plane_index(c->primary));
> +
> + intel_set_plane_visible(to_intel_crtc_state(c->state),
> +
> to_intel_plane_state(c->primary->state),
> + false);
> }
> }
> }
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 8f4ddca0f521..20ba8f48bc3b 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -669,6 +669,9 @@ struct intel_crtc_state {
>
> /* Gamma mode programmed on the pipe */
> uint32_t gamma_mode;
> +
> + /* bitmask of visible planes (enum plane_id) */
> + u8 active_planes;
Can we change this to uint32_t 1<<drm_plane_index like the other masks?
plane_mask, connector_mask and encoder_mask use 1 << index.
Perhaps name it active_planes_mask too.
~Maarten
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