[Intel-gfx] [PATCH 2/8] drm/i915/fbc: Extract intel_fbc_update()

Ville Syrjala
2021-07-02T20:46:16Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Pull the fbc enable vs. disable stuff into a small helper so
we don't have to have it pollute the higher level modeset code.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 5 +---
drivers/gpu/drm/i915/display/intel_fbc.c | 26 ++++++++++++++++++--
drivers/gpu/drm/i915/display/intel_fbc.h | 2 +-
3 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 026c28c612f0..ab395d61963c 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10252,10 +10252,7 @@ static void intel_update_crtc(struct intel_atomic_state *state,
intel_encoders_update_pipe(state, crtc);
}

- if (new_crtc_state->update_pipe && !new_crtc_state->enable_fbc)
- intel_fbc_disable(crtc);
- else
- intel_fbc_enable(state, crtc);
+ intel_fbc_update(state, crtc);

/* Perform vblank evasion around commit operation */
intel_pipe_update_start(new_crtc_state);
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c
index 85cfb0da8576..8b721c8cdd6c 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.c
+++ b/drivers/gpu/drm/i915/display/intel_fbc.c
@@ -1244,8 +1244,8 @@ void intel_fbc_choose_crtc(struct drm_i915_private *dev_priv,
* intel_fbc_enable multiple times for the same pipe without an
* intel_fbc_disable in the middle, as long as it is deactivated.
*/
-void intel_fbc_enable(struct intel_atomic_state *state,
- struct intel_crtc *crtc)
+static void intel_fbc_enable(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_plane *plane = to_intel_plane(crtc->base.primary);
@@ -1320,6 +1320,28 @@ void intel_fbc_disable(struct intel_crtc *crtc)
mutex_unlock(&fbc->lock);
}

+/**
+ * intel_fbc_update: enable/disable FBC on the CRTC
+ * @state: atomic state
+ * @crtc: the CRTC
+ *
+ * This function checks if the given CRTC was chosen for FBC, then enables it if
+ * possible. Notice that it doesn't activate FBC. It is valid to call
+ * intel_fbc_update multiple times for the same pipe without an
+ * intel_fbc_disable in the middle.
+ */
+void intel_fbc_update(struct intel_atomic_state *state,
+ struct intel_crtc *crtc)
+{
+ const struct intel_crtc_state *crtc_state =
+ intel_atomic_get_new_crtc_state(state, crtc);
+
+ if (crtc_state->update_pipe && !crtc_state->enable_fbc)
+ intel_fbc_disable(crtc);
+ else
+ intel_fbc_enable(state, crtc);
+}
+
/**
* intel_fbc_global_disable - globally disable FBC
* @dev_priv: i915 device instance
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.h b/drivers/gpu/drm/i915/display/intel_fbc.h
index 6dc1edefe81b..b97d908738e6 100644
--- a/drivers/gpu/drm/i915/display/intel_fbc.h
+++ b/drivers/gpu/drm/i915/display/intel_fbc.h
@@ -24,7 +24,7 @@ bool intel_fbc_pre_update(struct intel_atomic_state *state,
void intel_fbc_post_update(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void intel_fbc_init(struct drm_i915_private *dev_priv);
-void intel_fbc_enable(struct intel_atomic_state *state,
+void intel_fbc_update(struct intel_atomic_state *state,
struct intel_crtc *crtc);
void intel_fbc_disable(struct intel_crtc *crtc);
void intel_fbc_global_disable(struct drm_i915_private *dev_priv);
--
2.31.1