drm: Add old state pointer to CRTC .enable() helper function

The old state is useful for drivers that need to perform operations at
enable time that depend on the transition between the old and new
states.

While at it, rename the operation to .atomic_enable() to be consistent
with .atomic_disable(), as the .enable() operation is used by atomic
helpers only.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> # for sun4i
Acked-by: Philipp Zabel <p.zabel@pengutronix.de> # for imx-drm and mediatek
Acked-by: Alexey Brodkin <abrodkin@synopsys.com> # for arcpgu
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> # for atmel-hlcdc
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> # for hdlcd and mali-dp
Acked-by: Stefan Agner <stefan@agner.ch> # for fsl-dcu
Tested-by: Philippe Cornu <philippe.cornu@st.com> # for stm
Acked-by: Philippe Cornu <philippe.cornu@st.com> # for stm
Acked-by: Vincent Abriou <vincent.abriou@st.com> # for sti
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com> # for vmwgfx
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170630093646.7928-2-laurent.pinchart+renesas@ideasonboard.com

2 files changed, 6 insertions, 4 deletions

diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
index 615e1def64d9..9c20133f3f8d 100644
--- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
@@ -295,7 +295,8 @@ static void mdp4_crtc_disable(struct drm_crtc *crtc)
         mdp4_crtc->enabled = false;
 }
 
-static void mdp4_crtc_enable(struct drm_crtc *crtc)
+static void mdp4_crtc_atomic_enable(struct drm_crtc *crtc,
+                                    struct drm_crtc_state *old_state)
 {
         struct mdp4_crtc *mdp4_crtc = to_mdp4_crtc(crtc);
         struct mdp4_kms *mdp4_kms = get_kms(crtc);
@@ -493,10 +494,10 @@ static const struct drm_crtc_funcs mdp4_crtc_funcs = {
 static const struct drm_crtc_helper_funcs mdp4_crtc_helper_funcs = {
         .mode_set_nofb = mdp4_crtc_mode_set_nofb,
         .disable = mdp4_crtc_disable,
-        .enable = mdp4_crtc_enable,
         .atomic_check = mdp4_crtc_atomic_check,
         .atomic_begin = mdp4_crtc_atomic_begin,
         .atomic_flush = mdp4_crtc_atomic_flush,
+        .atomic_enable = mdp4_crtc_atomic_enable,
 };
 
 static void mdp4_crtc_vblank_irq(struct mdp_irq *irq, uint32_t irqstatus)
diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
index cb5415d6c04b..d39d9d24d169 100644
--- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
+++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_crtc.c
@@ -429,7 +429,8 @@ static void mdp5_crtc_disable(struct drm_crtc *crtc)
         mdp5_crtc->enabled = false;
 }
 
-static void mdp5_crtc_enable(struct drm_crtc *crtc)
+static void mdp5_crtc_atomic_enable(struct drm_crtc *crtc,
+                                    struct drm_crtc_state *old_state)
 {
         struct mdp5_crtc *mdp5_crtc = to_mdp5_crtc(crtc);
         struct mdp5_crtc_state *mdp5_cstate = to_mdp5_crtc_state(crtc->state);
@@ -940,10 +941,10 @@ static const struct drm_crtc_funcs mdp5_crtc_no_lm_cursor_funcs = {
 static const struct drm_crtc_helper_funcs mdp5_crtc_helper_funcs = {
         .mode_set_nofb = mdp5_crtc_mode_set_nofb,
         .disable = mdp5_crtc_disable,
-        .enable = mdp5_crtc_enable,
         .atomic_check = mdp5_crtc_atomic_check,
         .atomic_begin = mdp5_crtc_atomic_begin,
         .atomic_flush = mdp5_crtc_atomic_flush,
+        .atomic_enable = mdp5_crtc_atomic_enable,
 };
 
 static void mdp5_crtc_vblank_irq(struct mdp_irq *irq, uint32_t irqstatus)