diff --git a/drivers/gpu/drm/arc/arcpgu_crtc.c b/drivers/gpu/drm/arc/arcpgu_crtc.c
index 1f306781c9d5b4f61b67a08eaf2baa5fe5b44a89..c9bc6a90ac83c3fb8330d89382caed822faebc4a 100644
--- a/drivers/gpu/drm/arc/arcpgu_crtc.c
+++ b/drivers/gpu/drm/arc/arcpgu_crtc.c
@@ -119,7 +119,8 @@ static void arc_pgu_crtc_mode_set_nofb(struct drm_crtc *crtc)
clk_set_rate(arcpgu->clk, m->crtc_clock * 1000);
}
-static void arc_pgu_crtc_enable(struct drm_crtc *crtc)
+static void arc_pgu_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct arcpgu_drm_private *arcpgu = crtc_to_arcpgu_priv(crtc);
@@ -161,9 +162,9 @@ static const struct drm_crtc_helper_funcs arc_pgu_crtc_helper_funcs = {
.mode_set = drm_helper_crtc_mode_set,
.mode_set_base = drm_helper_crtc_mode_set_base,
.mode_set_nofb = arc_pgu_crtc_mode_set_nofb,
- .enable = arc_pgu_crtc_enable,
.disable = arc_pgu_crtc_disable,
.atomic_begin = arc_pgu_crtc_atomic_begin,
+ .atomic_enable = arc_pgu_crtc_atomic_enable,
};
static void arc_pgu_plane_atomic_update(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c b/drivers/gpu/drm/arm/hdlcd_crtc.c
index d67b6f15e8b8a03f902d02861e51cb696eb1e9b5..2b7f4f05d91f466217eb13d9675b1d41378cb534 100644
--- a/drivers/gpu/drm/arm/hdlcd_crtc.c
+++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
@@ -165,7 +165,8 @@ static void hdlcd_crtc_mode_set_nofb(struct drm_crtc *crtc)
clk_set_rate(hdlcd->clk, m->crtc_clock * 1000);
}
-static void hdlcd_crtc_enable(struct drm_crtc *crtc)
+static void hdlcd_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct hdlcd_drm_private *hdlcd = crtc_to_hdlcd_priv(crtc);
@@ -218,10 +219,10 @@ static void hdlcd_crtc_atomic_begin(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs hdlcd_crtc_helper_funcs = {
- .enable = hdlcd_crtc_enable,
.disable = hdlcd_crtc_disable,
.atomic_check = hdlcd_crtc_atomic_check,
.atomic_begin = hdlcd_crtc_atomic_begin,
+ .atomic_enable = hdlcd_crtc_atomic_enable,
};
static int hdlcd_plane_atomic_check(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c
index 4bb38a21efecb6e0741a626f986515570ed3b1f3..8e5b1c0181ab70614c87b043e9c0e2a4f35529de 100644
--- a/drivers/gpu/drm/arm/malidp_crtc.c
+++ b/drivers/gpu/drm/arm/malidp_crtc.c
@@ -46,7 +46,8 @@ static enum drm_mode_status malidp_crtc_mode_valid(struct drm_crtc *crtc,
return MODE_OK;
}
-static void malidp_crtc_enable(struct drm_crtc *crtc)
+static void malidp_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
struct malidp_hw_device *hwdev = malidp->dev;
@@ -408,9 +409,9 @@ static int malidp_crtc_atomic_check(struct drm_crtc *crtc,
static const struct drm_crtc_helper_funcs malidp_crtc_helper_funcs = {
.mode_valid = malidp_crtc_mode_valid,
- .enable = malidp_crtc_enable,
.disable = malidp_crtc_disable,
.atomic_check = malidp_crtc_atomic_check,
+ .atomic_enable = malidp_crtc_atomic_enable,
};
static struct drm_crtc_state *malidp_crtc_duplicate_state(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
index f6b8c5908a20946410bc8187e2f94fe6e969af74..e54e503180f45ac1a7f00806e2e66fa198525958 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c
@@ -183,7 +183,8 @@ static void atmel_hlcdc_crtc_disable(struct drm_crtc *c)
pm_runtime_put_sync(dev->dev);
}
-static void atmel_hlcdc_crtc_enable(struct drm_crtc *c)
+static void atmel_hlcdc_crtc_atomic_enable(struct drm_crtc *c,
+ struct drm_crtc_state *old_state)
{
struct drm_device *dev = c->dev;
struct atmel_hlcdc_crtc *crtc = drm_crtc_to_atmel_hlcdc_crtc(c);
@@ -320,10 +321,10 @@ static const struct drm_crtc_helper_funcs lcdc_crtc_helper_funcs = {
.mode_set_nofb = atmel_hlcdc_crtc_mode_set_nofb,
.mode_set_base = drm_helper_crtc_mode_set_base,
.disable = atmel_hlcdc_crtc_disable,
- .enable = atmel_hlcdc_crtc_enable,
.atomic_check = atmel_hlcdc_crtc_atomic_check,
.atomic_begin = atmel_hlcdc_crtc_atomic_begin,
.atomic_flush = atmel_hlcdc_crtc_atomic_flush,
+ .atomic_enable = atmel_hlcdc_crtc_atomic_enable,
};
static void atmel_hlcdc_crtc_destroy(struct drm_crtc *c)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 2f269e4267da1c8fd40cf11da9deb0c1cad68b1b..23e4661a62feaa56423cc36538f513b61a24c60f 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -1069,12 +1069,13 @@ void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,
struct drm_atomic_state *old_state)
{
struct drm_crtc *crtc;
+ struct drm_crtc_state *old_crtc_state;
struct drm_crtc_state *new_crtc_state;
struct drm_connector *connector;
struct drm_connector_state *new_conn_state;
int i;
- for_each_new_crtc_in_state(old_state, crtc, new_crtc_state, i) {
+ for_each_oldnew_crtc_in_state(old_state, crtc, old_crtc_state, new_crtc_state, i) {
const struct drm_crtc_helper_funcs *funcs;
/* Need to filter out CRTCs where only planes change. */
@@ -1090,8 +1091,8 @@ void drm_atomic_helper_commit_modeset_enables(struct drm_device *dev,
DRM_DEBUG_ATOMIC("enabling [CRTC:%d:%s]\n",
crtc->base.id, crtc->name);
- if (funcs->enable)
- funcs->enable(crtc);
+ if (funcs->atomic_enable)
+ funcs->atomic_enable(crtc, old_crtc_state);
else
funcs->commit(crtc);
}
diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c
index e084f9f8ca666c168e1df7e7108abdb1cc39744b..58c27ab1756f46fdbd4289b9eebc3eb3e6a77946 100644
--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@@ -40,7 +40,8 @@ static int drm_simple_kms_crtc_check(struct drm_crtc *crtc,
return drm_atomic_add_affected_planes(state->state, crtc);
}
-static void drm_simple_kms_crtc_enable(struct drm_crtc *crtc)
+static void drm_simple_kms_crtc_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct drm_simple_display_pipe *pipe;
@@ -64,8 +65,8 @@ static void drm_simple_kms_crtc_disable(struct drm_crtc *crtc)
static const struct drm_crtc_helper_funcs drm_simple_kms_crtc_helper_funcs = {
.atomic_check = drm_simple_kms_crtc_check,
+ .atomic_enable = drm_simple_kms_crtc_enable,
.disable = drm_simple_kms_crtc_disable,
- .enable = drm_simple_kms_crtc_enable,
};
static const struct drm_crtc_funcs drm_simple_kms_crtc_funcs = {
diff --git a/drivers/gpu/drm/exynos/exynos_drm_crtc.c b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
index d72777f6411a73144ffb3142c2bdca2e8585ac61..b7e2fadb6442351c74592e8e3cfdf572fa5cd4c8 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_crtc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_crtc.c
@@ -21,7 +21,8 @@
#include "exynos_drm_drv.h"
#include "exynos_drm_plane.h"
-static void exynos_drm_crtc_enable(struct drm_crtc *crtc)
+static void exynos_drm_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
@@ -82,11 +83,11 @@ static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
- .enable = exynos_drm_crtc_enable,
.disable = exynos_drm_crtc_disable,
.atomic_check = exynos_crtc_atomic_check,
.atomic_begin = exynos_crtc_atomic_begin,
.atomic_flush = exynos_crtc_atomic_flush,
+ .atomic_enable = exynos_drm_crtc_atomic_enable,
};
void exynos_crtc_handle_event(struct exynos_drm_crtc *exynos_crtc)
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
index cc4e944a1d3c668a595616ca208cc587bc794b1f..0e3752437e44fd822e91949db7c234e9889c30c1 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_crtc.c
@@ -63,7 +63,8 @@ static void fsl_dcu_drm_crtc_atomic_disable(struct drm_crtc *crtc,
clk_disable_unprepare(fsl_dev->pix_clk);
}
-static void fsl_dcu_drm_crtc_enable(struct drm_crtc *crtc)
+static void fsl_dcu_drm_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct drm_device *dev = crtc->dev;
struct fsl_dcu_drm_device *fsl_dev = dev->dev_private;
@@ -133,7 +134,7 @@ static void fsl_dcu_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
static const struct drm_crtc_helper_funcs fsl_dcu_drm_crtc_helper_funcs = {
.atomic_disable = fsl_dcu_drm_crtc_atomic_disable,
.atomic_flush = fsl_dcu_drm_crtc_atomic_flush,
- .enable = fsl_dcu_drm_crtc_enable,
+ .atomic_enable = fsl_dcu_drm_crtc_atomic_enable,
.mode_set_nofb = fsl_dcu_drm_crtc_mode_set_nofb,
};
diff --git a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
index 59542bddc9802838316d2a04e9a023ff546de014..49ef47c0c81ab928f153ede38c8dcf4ec151bac3 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_de.c
@@ -192,7 +192,8 @@ static struct drm_plane *hibmc_plane_init(struct hibmc_drm_private *priv)
return plane;
}
-static void hibmc_crtc_enable(struct drm_crtc *crtc)
+static void hibmc_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
unsigned int reg;
struct hibmc_drm_private *priv = crtc->dev->dev_private;
@@ -453,11 +454,11 @@ static const struct drm_crtc_funcs hibmc_crtc_funcs = {
};
static const struct drm_crtc_helper_funcs hibmc_crtc_helper_funcs = {
- .enable = hibmc_crtc_enable,
.disable = hibmc_crtc_disable,
.mode_set_nofb = hibmc_crtc_mode_set_nofb,
.atomic_begin = hibmc_crtc_atomic_begin,
.atomic_flush = hibmc_crtc_atomic_flush,
+ .atomic_enable = hibmc_crtc_atomic_enable,
};
int hibmc_de_init(struct hibmc_drm_private *priv)
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index c96c228a98980810d220eec84b2a8a3326e0c487..8e00818b24fc2305da04f5f396de5edf81c73f2b 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -467,7 +467,8 @@ static void ade_dump_regs(void __iomem *base)
static void ade_dump_regs(void __iomem *base) { }
#endif
-static void ade_crtc_enable(struct drm_crtc *crtc)
+static void ade_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct ade_crtc *acrtc = to_ade_crtc(crtc);
struct ade_hw_ctx *ctx = acrtc->ctx;
@@ -553,11 +554,11 @@ static void ade_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs ade_crtc_helper_funcs = {
- .enable = ade_crtc_enable,
.disable = ade_crtc_disable,
.mode_set_nofb = ade_crtc_mode_set_nofb,
.atomic_begin = ade_crtc_atomic_begin,
.atomic_flush = ade_crtc_atomic_flush,
+ .atomic_enable = ade_crtc_atomic_enable,
};
static const struct drm_crtc_funcs ade_crtc_funcs = {
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 5456c15d962c525a4879b9b8a2b9cf63814ffc12..53e0b24beda6e0e2ee44c57550d5c752393b5863 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -50,7 +50,8 @@ static inline struct ipu_crtc *to_ipu_crtc(struct drm_crtc *crtc)
return container_of(crtc, struct ipu_crtc, base);
}
-static void ipu_crtc_enable(struct drm_crtc *crtc)
+static void ipu_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc);
struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent);
@@ -293,7 +294,7 @@ static const struct drm_crtc_helper_funcs ipu_helper_funcs = {
.atomic_check = ipu_crtc_atomic_check,
.atomic_begin = ipu_crtc_atomic_begin,
.atomic_disable = ipu_crtc_atomic_disable,
- .enable = ipu_crtc_enable,
+ .atomic_enable = ipu_crtc_atomic_enable,
};
static void ipu_put_resources(struct ipu_crtc *ipu_crtc)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index 6582e1f56d37cfb23bcf54a740ddf22a207c7ded..5971b0827d1b342fa9fe8fe200c0823d2787bbbd 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -366,7 +366,8 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc)
}
}
-static void mtk_drm_crtc_enable(struct drm_crtc *crtc)
+static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct mtk_drm_crtc *mtk_crtc = to_mtk_crtc(crtc);
struct mtk_ddp_comp *ovl = mtk_crtc->ddp_comp[0];
@@ -487,10 +488,10 @@ static const struct drm_crtc_funcs mtk_crtc_funcs = {
static const struct drm_crtc_helper_funcs mtk_crtc_helper_funcs = {
.mode_fixup = mtk_drm_crtc_mode_fixup,
.mode_set_nofb = mtk_drm_crtc_mode_set_nofb,
- .enable = mtk_drm_crtc_enable,
.disable = mtk_drm_crtc_disable,
.atomic_begin = mtk_drm_crtc_atomic_begin,
.atomic_flush = mtk_drm_crtc_atomic_flush,
+ .atomic_enable = mtk_drm_crtc_atomic_enable,
};
static int mtk_drm_crtc_init(struct drm_device *drm,
diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
index c986eb03b9d98d57356c016375878a593f13cf09..6f148307b0e091610975363f910f3a9255ec7d35 100644
--- a/drivers/gpu/drm/meson/meson_crtc.c
+++ b/drivers/gpu/drm/meson/meson_crtc.c
@@ -79,7 +79,8 @@ static const struct drm_crtc_funcs meson_crtc_funcs = {
};
-static void meson_crtc_enable(struct drm_crtc *crtc)
+static void meson_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct meson_crtc *meson_crtc = to_meson_crtc(crtc);
struct drm_crtc_state *crtc_state = crtc->state;
@@ -149,10 +150,10 @@ static void meson_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs meson_crtc_helper_funcs = {
- .enable = meson_crtc_enable,
.disable = meson_crtc_disable,
.atomic_begin = meson_crtc_atomic_begin,
.atomic_flush = meson_crtc_atomic_flush,
+ .atomic_enable = meson_crtc_atomic_enable,
};
void meson_crtc_irq(struct meson_drm *priv)
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_crtc.c
index 615e1def64d9482f2609f0545652f340d4d9743f..9c20133f3f8d53bc84b8a7a899cb41d5ecdeedf0 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 cb5415d6c04b7ab6e1e80503d26b32891a934dee..d39d9d24d16958fc8751990ddc89205b4c513a69 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)
diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index dd0ef40ca46929ee192b6e2bcf7fbc9a44721d84..7a1b7a9cc270884b543cae24998917fe14066e0a 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -356,7 +356,8 @@ static void omap_crtc_arm_event(struct drm_crtc *crtc)
}
}
-static void omap_crtc_enable(struct drm_crtc *crtc)
+static void omap_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct omap_crtc *omap_crtc = to_omap_crtc(crtc);
int ret;
@@ -568,10 +569,10 @@ static const struct drm_crtc_funcs omap_crtc_funcs = {
static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs = {
.mode_set_nofb = omap_crtc_mode_set_nofb,
.disable = omap_crtc_disable,
- .enable = omap_crtc_enable,
.atomic_check = omap_crtc_atomic_check,
.atomic_begin = omap_crtc_atomic_begin,
.atomic_flush = omap_crtc_atomic_flush,
+ .atomic_enable = omap_crtc_atomic_enable,
};
/* -----------------------------------------------------------------------------
diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 7ede5f131a5cddf6442e4ced0861c9e927e1ab9c..ea95e7e7cc7fe34b88a59c4b8383aa6f615e3a89 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -447,7 +447,8 @@ static void qxl_mode_set_nofb(struct drm_crtc *crtc)
}
-static void qxl_crtc_enable(struct drm_crtc *crtc)
+static void qxl_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
DRM_DEBUG("\n");
}
@@ -466,8 +467,8 @@ static const struct drm_crtc_helper_funcs qxl_crtc_helper_funcs = {
.disable = qxl_crtc_disable,
.mode_fixup = qxl_crtc_mode_fixup,
.mode_set_nofb = qxl_mode_set_nofb,
- .enable = qxl_crtc_enable,
.atomic_flush = qxl_crtc_atomic_flush,
+ .atomic_enable = qxl_crtc_atomic_enable,
};
static int qxl_primary_atomic_check(struct drm_plane *plane,
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 345eff72f581943a6d7b25c63644e274cc2cf394..6aa3fa8d06f986a844736512fd44f89d3e6f8202 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -552,7 +552,8 @@ void rcar_du_crtc_resume(struct rcar_du_crtc *rcrtc)
* CRTC Functions
*/
-static void rcar_du_crtc_enable(struct drm_crtc *crtc)
+static void rcar_du_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
@@ -610,9 +611,9 @@ static void rcar_du_crtc_atomic_flush(struct drm_crtc *crtc,
static const struct drm_crtc_helper_funcs crtc_helper_funcs = {
.disable = rcar_du_crtc_disable,
- .enable = rcar_du_crtc_enable,
.atomic_begin = rcar_du_crtc_atomic_begin,
.atomic_flush = rcar_du_crtc_atomic_flush,
+ .atomic_enable = rcar_du_crtc_atomic_enable,
};
static int rcar_du_crtc_enable_vblank(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 5d450332c2fd79fd8c1052aca84d7d15c5db3ef8..bb59f7410634e07160a2f99741b81fca874950c5 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -871,7 +871,8 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
return true;
}
-static void vop_crtc_enable(struct drm_crtc *crtc)
+static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct vop *vop = to_vop(crtc);
const struct vop_data *vop_data = vop->data;
@@ -1079,11 +1080,11 @@ static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
- .enable = vop_crtc_enable,
.disable = vop_crtc_disable,
.mode_fixup = vop_crtc_mode_fixup,
.atomic_flush = vop_crtc_atomic_flush,
.atomic_begin = vop_crtc_atomic_begin,
+ .atomic_enable = vop_crtc_atomic_enable,
};
static void vop_crtc_destroy(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/sti/sti_crtc.c b/drivers/gpu/drm/sti/sti_crtc.c
index d45a4335df5df92a213be2119eb84d792aa59c3f..bb864345fedfa92d6c88a408f0202b2993fea36c 100644
--- a/drivers/gpu/drm/sti/sti_crtc.c
+++ b/drivers/gpu/drm/sti/sti_crtc.c
@@ -20,7 +20,8 @@
#include "sti_vid.h"
#include "sti_vtg.h"
-static void sti_crtc_enable(struct drm_crtc *crtc)
+static void sti_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct sti_mixer *mixer = to_sti_mixer(crtc);
@@ -222,10 +223,10 @@ static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
- .enable = sti_crtc_enable,
.disable = sti_crtc_disabling,
.mode_set_nofb = sti_crtc_mode_set_nofb,
.atomic_flush = sti_crtc_atomic_flush,
+ .atomic_enable = sti_crtc_atomic_enable,
};
static void sti_crtc_destroy(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 1b9483d4f2a4ec3b80dea15acdd38ca730733381..337fce004d088217f1940ec01816aecf941aa7f5 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -386,7 +386,8 @@ static void ltdc_crtc_load_lut(struct drm_crtc *crtc)
ldev->clut[i]);
}
-static void ltdc_crtc_enable(struct drm_crtc *crtc)
+static void ltdc_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct ltdc_device *ldev = crtc_to_ltdc(crtc);
@@ -524,10 +525,10 @@ static void ltdc_crtc_atomic_flush(struct drm_crtc *crtc,
static struct drm_crtc_helper_funcs ltdc_crtc_helper_funcs = {
.load_lut = ltdc_crtc_load_lut,
- .enable = ltdc_crtc_enable,
.disable = ltdc_crtc_disable,
.mode_set_nofb = ltdc_crtc_mode_set_nofb,
.atomic_flush = ltdc_crtc_atomic_flush,
+ .atomic_enable = ltdc_crtc_atomic_enable,
};
int ltdc_crtc_enable_vblank(struct drm_device *ddev, unsigned int pipe)
diff --git a/drivers/gpu/drm/sun4i/sun4i_crtc.c b/drivers/gpu/drm/sun4i/sun4i_crtc.c
index f8c70439d1e2f030b9173deace6bc1700afa0fa1..509e4d8014f36cb4f71a4925f2c2153de3fffcfb 100644
--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -86,7 +86,8 @@ static void sun4i_crtc_disable(struct drm_crtc *crtc)
}
}
-static void sun4i_crtc_enable(struct drm_crtc *crtc)
+static void sun4i_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
@@ -98,8 +99,8 @@ static void sun4i_crtc_enable(struct drm_crtc *crtc)
static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
.atomic_begin = sun4i_crtc_atomic_begin,
.atomic_flush = sun4i_crtc_atomic_flush,
+ .atomic_enable = sun4i_crtc_atomic_enable,
.disable = sun4i_crtc_disable,
- .enable = sun4i_crtc_enable,
};
static int sun4i_crtc_enable_vblank(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index c875f11786b933612e85cdeba677ecb706130954..2e0d167cb657a16a0c9991b651e772b542261156 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1243,7 +1243,8 @@ static void tegra_crtc_disable(struct drm_crtc *crtc)
pm_runtime_put_sync(dc->dev);
}
-static void tegra_crtc_enable(struct drm_crtc *crtc)
+static void tegra_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct drm_display_mode *mode = &crtc->state->adjusted_mode;
struct tegra_dc_state *state = to_dc_state(crtc->state);
@@ -1352,10 +1353,10 @@ static void tegra_crtc_atomic_flush(struct drm_crtc *crtc,
static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = {
.disable = tegra_crtc_disable,
- .enable = tegra_crtc_enable,
.atomic_check = tegra_crtc_atomic_check,
.atomic_begin = tegra_crtc_atomic_begin,
.atomic_flush = tegra_crtc_atomic_flush,
+ .atomic_enable = tegra_crtc_atomic_enable,
};
static irqreturn_t tegra_dc_irq(int irq, void *data)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index d524ed0d5146ca8ee0caf9e1a290163af0470f46..6c5892763d27f31b4d5288d115e615a04b166ede 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -504,6 +504,12 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc)
mutex_unlock(&tilcdc_crtc->enable_lock);
}
+static void tilcdc_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ tilcdc_crtc_enable(crtc);
+}
+
static void tilcdc_crtc_off(struct drm_crtc *crtc, bool shutdown)
{
struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
@@ -729,9 +735,9 @@ static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
static const struct drm_crtc_helper_funcs tilcdc_crtc_helper_funcs = {
.mode_fixup = tilcdc_crtc_mode_fixup,
- .enable = tilcdc_crtc_enable,
.disable = tilcdc_crtc_disable,
.atomic_check = tilcdc_crtc_atomic_check,
+ .atomic_enable = tilcdc_crtc_atomic_enable,
};
int tilcdc_crtc_max_width(struct drm_crtc *crtc)
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
index f20c01759c0d30128094d1a931b952665548d613..4c03a565b2765c8385b87bc77fa79f81b19eaaf9 100644
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
@@ -533,7 +533,8 @@ static void vc4_crtc_disable(struct drm_crtc *crtc)
}
}
-static void vc4_crtc_enable(struct drm_crtc *crtc)
+static void vc4_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct drm_device *dev = crtc->dev;
struct vc4_dev *vc4 = to_vc4_dev(dev);
@@ -870,10 +871,10 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = {
static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
.mode_set_nofb = vc4_crtc_mode_set_nofb,
.disable = vc4_crtc_disable,
- .enable = vc4_crtc_enable,
.mode_valid = vc4_crtc_mode_valid,
.atomic_check = vc4_crtc_atomic_check,
.atomic_flush = vc4_crtc_atomic_flush,
+ .atomic_enable = vc4_crtc_atomic_enable,
};
static const struct vc4_crtc_data pv0_data = {
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index d51bd4521f170df0ab60472892fb013ff9989c42..03a3c12ed10074501b0206d53edbb7f62fd7dab0 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -113,7 +113,8 @@ static void virtio_gpu_crtc_mode_set_nofb(struct drm_crtc *crtc)
crtc->mode.vdisplay, 0, 0);
}
-static void virtio_gpu_crtc_enable(struct drm_crtc *crtc)
+static void virtio_gpu_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
}
@@ -145,11 +146,11 @@ static void virtio_gpu_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs virtio_gpu_crtc_helper_funcs = {
- .enable = virtio_gpu_crtc_enable,
.disable = virtio_gpu_crtc_disable,
.mode_set_nofb = virtio_gpu_crtc_mode_set_nofb,
.atomic_check = virtio_gpu_crtc_atomic_check,
.atomic_flush = virtio_gpu_crtc_atomic_flush,
+ .atomic_enable = virtio_gpu_crtc_atomic_enable,
};
static void virtio_gpu_enc_mode_set(struct drm_encoder *encoder,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
index f8acd3a15523851635900aed3388981b3ea943cf..832b83c582c2cc639caa7c7ca905d53433fd79e0 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
@@ -203,7 +203,7 @@ static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
}
/**
- * vmw_ldu_crtc_helper_enable - Noop
+ * vmw_ldu_crtc_atomic_enable - Noop
*
* @crtc: CRTC associated with the new screen
*
@@ -212,7 +212,8 @@ static void vmw_ldu_crtc_mode_set_nofb(struct drm_crtc *crtc)
* but since for LDU the display plane is closely tied to the
* CRTC, it makes more sense to do those at plane update time.
*/
-static void vmw_ldu_crtc_helper_enable(struct drm_crtc *crtc)
+static void vmw_ldu_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
}
@@ -376,12 +377,12 @@ drm_plane_helper_funcs vmw_ldu_primary_plane_helper_funcs = {
};
static const struct drm_crtc_helper_funcs vmw_ldu_crtc_helper_funcs = {
- .enable = vmw_ldu_crtc_helper_enable,
.disable = vmw_ldu_crtc_helper_disable,
.mode_set_nofb = vmw_ldu_crtc_mode_set_nofb,
.atomic_check = vmw_du_crtc_atomic_check,
.atomic_begin = vmw_du_crtc_atomic_begin,
.atomic_flush = vmw_du_crtc_atomic_flush,
+ .atomic_enable = vmw_ldu_crtc_atomic_enable,
};
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
index 1cb826c503bfb673f20444ba279c64a011e238e1..8ba3bad06909f557f42c449a86429584cea83f43 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
@@ -270,13 +270,14 @@ static void vmw_sou_crtc_helper_prepare(struct drm_crtc *crtc)
}
/**
- * vmw_sou_crtc_helper_enable - Noop
+ * vmw_sou_crtc_atomic_enable - Noop
*
* @crtc: CRTC associated with the new screen
*
* This is called after a mode set has been completed.
*/
-static void vmw_sou_crtc_helper_enable(struct drm_crtc *crtc)
+static void vmw_sou_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
}
@@ -573,12 +574,12 @@ drm_plane_helper_funcs vmw_sou_primary_plane_helper_funcs = {
static const struct drm_crtc_helper_funcs vmw_sou_crtc_helper_funcs = {
.prepare = vmw_sou_crtc_helper_prepare,
- .enable = vmw_sou_crtc_helper_enable,
.disable = vmw_sou_crtc_helper_disable,
.mode_set_nofb = vmw_sou_crtc_mode_set_nofb,
.atomic_check = vmw_du_crtc_atomic_check,
.atomic_begin = vmw_du_crtc_atomic_begin,
.atomic_flush = vmw_du_crtc_atomic_flush,
+ .atomic_enable = vmw_sou_crtc_atomic_enable,
};
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 4eb93b47d6dbb73a8fa7eba419e4298826fd6f0b..f2b39d9c51cc4c94b95e0c3e1ab95cff083c9562 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -412,7 +412,8 @@ static void vmw_stdu_crtc_helper_prepare(struct drm_crtc *crtc)
}
-static void vmw_stdu_crtc_helper_enable(struct drm_crtc *crtc)
+static void vmw_stdu_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct vmw_private *dev_priv;
struct vmw_screen_target_display_unit *stdu;
@@ -1415,12 +1416,12 @@ drm_plane_helper_funcs vmw_stdu_primary_plane_helper_funcs = {
static const struct drm_crtc_helper_funcs vmw_stdu_crtc_helper_funcs = {
.prepare = vmw_stdu_crtc_helper_prepare,
- .enable = vmw_stdu_crtc_helper_enable,
.disable = vmw_stdu_crtc_helper_disable,
.mode_set_nofb = vmw_stdu_crtc_mode_set_nofb,
.atomic_check = vmw_du_crtc_atomic_check,
.atomic_begin = vmw_du_crtc_atomic_begin,
.atomic_flush = vmw_du_crtc_atomic_flush,
+ .atomic_enable = vmw_stdu_crtc_atomic_enable,
};
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
index 5fbd10b60ee516de96c48bf5f4eb09558a2b64c8..ccb4b0bdb8c65c1b8bb68b5db7a91967c7f87713 100644
--- a/drivers/gpu/drm/zte/zx_vou.c
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -350,7 +350,8 @@ static inline void vou_chn_set_update(struct zx_crtc *zcrtc)
zx_writel(zcrtc->chnreg + CHN_UPDATE, 1);
}
-static void zx_crtc_enable(struct drm_crtc *crtc)
+static void zx_crtc_atomic_enable(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
{
struct drm_display_mode *mode = &crtc->state->adjusted_mode;
bool interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE;
@@ -490,9 +491,9 @@ static void zx_crtc_atomic_flush(struct drm_crtc *crtc,
}
static const struct drm_crtc_helper_funcs zx_crtc_helper_funcs = {
- .enable = zx_crtc_enable,
.disable = zx_crtc_disable,
.atomic_flush = zx_crtc_atomic_flush,
+ .atomic_enable = zx_crtc_atomic_enable,
};
static int zx_vou_enable_vblank(struct drm_crtc *crtc)
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 474a1029ec7941a374b396b8f08a71d2bb2fdd5c..c85124f687baab4669518d6cc37caebc0fb732ce 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -71,7 +71,7 @@ struct drm_crtc_helper_funcs {
* This callback is used by the legacy CRTC helpers. Atomic helpers
* also support using this hook for enabling and disabling a CRTC to
* facilitate transitions to atomic, but it is deprecated. Instead
- * @enable and @disable should be used.
+ * @atomic_enable and @atomic_disable should be used.
*/
void (*dpms)(struct drm_crtc *crtc, int mode);
@@ -85,8 +85,8 @@ struct drm_crtc_helper_funcs {
*
* This callback is used by the legacy CRTC helpers. Atomic helpers
* also support using this hook for disabling a CRTC to facilitate
- * transitions to atomic, but it is deprecated. Instead @disable should
- * be used.
+ * transitions to atomic, but it is deprecated. Instead @atomic_disable
+ * should be used.
*/
void (*prepare)(struct drm_crtc *crtc);
@@ -100,8 +100,8 @@ struct drm_crtc_helper_funcs {
*
* This callback is used by the legacy CRTC helpers. Atomic helpers
* also support using this hook for enabling a CRTC to facilitate
- * transitions to atomic, but it is deprecated. Instead @enable should
- * be used.
+ * transitions to atomic, but it is deprecated. Instead @atomic_enable
+ * should be used.
*/
void (*commit)(struct drm_crtc *crtc);
@@ -222,7 +222,7 @@ struct drm_crtc_helper_funcs {
* pipeline is suspended using either DPMS or the new "ACTIVE" property.
* Which means register values set in this callback might get reset when
* the CRTC is suspended, but not restored. Such drivers should instead
- * move all their CRTC setup into the @enable callback.
+ * move all their CRTC setup into the @atomic_enable callback.
*
* This callback is optional.
*/
@@ -297,7 +297,7 @@ struct drm_crtc_helper_funcs {
* Atomic drivers don't need to implement it if there's no need to
* disable anything at the CRTC level. To ensure that runtime PM
* handling (using either DPMS or the new "ACTIVE" property) works
- * @disable must be the inverse of @enable for atomic drivers.
+ * @disable must be the inverse of @atomic_enable for atomic drivers.
* Atomic drivers should consider to use @atomic_disable instead of
* this one.
*
@@ -315,24 +315,6 @@ struct drm_crtc_helper_funcs {
*/
void (*disable)(struct drm_crtc *crtc);
- /**
- * @enable:
- *
- * This callback should be used to enable the CRTC. With the atomic
- * drivers it is called before all encoders connected to this CRTC are
- * enabled through the encoder's own &drm_encoder_helper_funcs.enable
- * hook. If that sequence is too simple drivers can just add their own
- * hooks and call it from this CRTC callback here by looping over all
- * encoders connected to it using for_each_encoder_on_crtc().
- *
- * This hook is used only by atomic helpers, for symmetry with @disable.
- * Atomic drivers don't need to implement it if there's no need to
- * enable anything at the CRTC level. To ensure that runtime PM handling
- * (using either DPMS or the new "ACTIVE" property) works
- * @enable must be the inverse of @disable for atomic drivers.
- */
- void (*enable)(struct drm_crtc *crtc);
-
/**
* @atomic_check:
*
@@ -432,6 +414,30 @@ struct drm_crtc_helper_funcs {
void (*atomic_flush)(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state);
+ /**
+ * @atomic_enable:
+ *
+ * This callback should be used to enable the CRTC. With the atomic
+ * drivers it is called before all encoders connected to this CRTC are
+ * enabled through the encoder's own &drm_encoder_helper_funcs.enable
+ * hook. If that sequence is too simple drivers can just add their own
+ * hooks and call it from this CRTC callback here by looping over all
+ * encoders connected to it using for_each_encoder_on_crtc().
+ *
+ * This hook is used only by atomic helpers, for symmetry with
+ * @atomic_disable. Atomic drivers don't need to implement it if there's
+ * no need to enable anything at the CRTC level. To ensure that runtime
+ * PM handling (using either DPMS or the new "ACTIVE" property) works
+ * @atomic_enable must be the inverse of @atomic_disable for atomic
+ * drivers.
+ *
+ * Drivers can use the @old_crtc_state input parameter if the operations
+ * needed to enable the CRTC don't depend solely on the new state but
+ * also on the transition between the old state and the new state.
+ */
+ void (*atomic_enable)(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_crtc_state);
+
/**
* @atomic_disable:
*