drm: rcar-du: Remove local CRTC enabled state

The atomic framework guarantees that the CRTC enable and disable
functions will only be called when needed, there's no need to duplicate
the CRTC state check. By replacing the local CRTC enabled state check at
resume time with the CRTC active state we can remove the local CRTC
enabled state altogether.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 4ec80ae1fa99cfd002ecc39c5ca527f691a23413..b87b8ffb898b97383064e9a66e7c16b33718118c 100644 (file)
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -418,7 +418,7 @@ void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc)
 {
        unsigned int i;
 
-       if (!rcrtc->enabled)
+       if (!rcrtc->crtc.state->active)
                return;
 
        rcar_du_crtc_get(rcrtc);
@@ -445,26 +445,17 @@ static void rcar_du_crtc_enable(struct drm_crtc *crtc)
 {
        struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 
-       if (rcrtc->enabled)
-               return;
-
        rcar_du_crtc_get(rcrtc);
        rcar_du_crtc_start(rcrtc);
-
-       rcrtc->enabled = true;
 }
 
 static void rcar_du_crtc_disable(struct drm_crtc *crtc)
 {
        struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
 
-       if (!rcrtc->enabled)
-               return;
-
        rcar_du_crtc_stop(rcrtc);
        rcar_du_crtc_put(rcrtc);
 
-       rcrtc->enabled = false;
        rcrtc->outputs = 0;
 }
 
@@ -589,7 +580,6 @@ int rcar_du_crtc_create(struct rcar_du_group *rgrp, unsigned int index)
        rcrtc->group = rgrp;
        rcrtc->mmio_offset = mmio_offsets[index];
        rcrtc->index = index;
-       rcrtc->enabled = false;
 
        ret = drm_crtc_init_with_planes(rcdu->ddev, crtc,
                                        &rgrp->planes[index % 2].plane,

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
index 2bbe3f5aab65e0cb86d2df0e4333e569a97996b5..dbc3a3ef9aa6c89f79dd3ee6472dc7c07c78a6e7 100644 (file)
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.h
@@ -33,7 +33,6 @@ struct rcar_du_group;
  * @event: event to post when the pending page flip completes
  * @flip_wait: wait queue used to signal page flip completion
  * @outputs: bitmask of the outputs (enum rcar_du_output) driven by this CRTC
- * @enabled: whether the CRTC is enabled, used to control system resume
  * @group: CRTC group this CRTC belongs to
  */
 struct rcar_du_crtc {
@@ -49,7 +48,6 @@ struct rcar_du_crtc {
        wait_queue_head_t flip_wait;
 
        unsigned int outputs;
-       bool enabled;
 
        struct rcar_du_group *group;
 };