[PATCH 01/15] drm/exynos: remove dependency on DRM simple helpers
From: Diogo Silva
Date: Sat Jul 18 2026 - 19:36:52 EST
The simple KMS helpers are deprecated because they only add an
intermediate layer between drivers and atomic modesetting.
Open-code drm_simple_encoder_init() by calling drm_encoder_init()
directly and providing driver-local drm_encoder_funcs.
Also check the return value from drm_encoder_init() to avoid silent
failures.
Signed-off-by: Diogo Silva <diogompaissilva@xxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_dp.c | 13 +++++++++++--
drivers/gpu/drm/exynos/exynos_drm_dpi.c | 14 ++++++++++++--
drivers/gpu/drm/exynos/exynos_drm_dsi.c | 11 +++++++++--
drivers/gpu/drm/exynos/exynos_drm_vidi.c | 14 ++++++++++++--
drivers/gpu/drm/exynos/exynos_hdmi.c | 15 +++++++++++++--
5 files changed, 57 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp.c b/drivers/gpu/drm/exynos/exynos_dp.c
index b80540328150..1598892c602b 100644
--- a/drivers/gpu/drm/exynos/exynos_dp.c
+++ b/drivers/gpu/drm/exynos/exynos_dp.c
@@ -24,11 +24,11 @@
#include <drm/drm_bridge.h>
#include <drm/drm_bridge_connector.h>
#include <drm/drm_crtc.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include <drm/exynos_drm.h>
#include "exynos_drm_crtc.h"
@@ -79,6 +79,10 @@ static void exynos_dp_nop(struct drm_encoder *encoder)
/* do nothing */
}
+static const struct drm_encoder_funcs exynos_dp_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
static const struct drm_encoder_helper_funcs exynos_dp_encoder_helper_funcs = {
.mode_set = exynos_dp_mode_set,
.enable = exynos_dp_nop,
@@ -95,7 +99,12 @@ static int exynos_dp_bind(struct device *dev, struct device *master, void *data)
dp->drm_dev = drm_dev;
- drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+ ret = drm_encoder_init(drm_dev, encoder, &exynos_dp_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ dev_err(dp->dev, "Failed to initialize encoder\n");
+ return ret;
+ }
drm_encoder_helper_add(encoder, &exynos_dp_encoder_helper_funcs);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index 0dc36df6ada3..4e42a1da81d1 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -12,10 +12,10 @@
#include <linux/regulator/consumer.h>
#include <drm/drm_atomic_helper.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_panel.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include <video/of_videomode.h>
#include <video/videomode.h>
@@ -140,6 +140,10 @@ static void exynos_dpi_disable(struct drm_encoder *encoder)
}
}
+static const struct drm_encoder_funcs exynos_dpi_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
static const struct drm_encoder_helper_funcs exynos_dpi_encoder_helper_funcs = {
.mode_set = exynos_dpi_mode_set,
.enable = exynos_dpi_enable,
@@ -194,7 +198,13 @@ int exynos_dpi_bind(struct drm_device *dev, struct drm_encoder *encoder)
{
int ret;
- drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
+ ret = drm_encoder_init(dev, encoder, &exynos_dpi_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ DRM_DEV_ERROR(encoder_to_dpi(encoder)->dev,
+ "failed to create encoder ret = %d\n", ret);
+ return ret;
+ }
drm_encoder_helper_add(encoder, &exynos_dpi_encoder_helper_funcs);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index c4d098ab7863..6b7561ac9bb0 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -13,7 +13,7 @@
#include <drm/bridge/samsung-dsim.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
+#include <drm/drm_encoder.h>
#include "exynos_drm_crtc.h"
#include "exynos_drm_drv.h"
@@ -22,6 +22,10 @@ struct exynos_dsi {
struct drm_encoder encoder;
};
+static const struct drm_encoder_funcs exynos_drm_dsi_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
static irqreturn_t exynos_dsi_te_irq_handler(struct samsung_dsim *dsim)
{
struct exynos_dsi *dsi = dsim->priv;
@@ -79,7 +83,10 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, void *data
struct drm_device *drm_dev = data;
int ret;
- drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+ ret = drm_encoder_init(drm_dev, encoder, &exynos_drm_dsi_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret)
+ return ret;
ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
if (ret < 0)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
index 67bbf9b8bc0e..59dea853d364 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c
@@ -13,10 +13,10 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include <drm/drm_vblank.h>
#include <drm/exynos_drm.h>
@@ -403,6 +403,10 @@ static void exynos_vidi_disable(struct drm_encoder *encoder)
{
}
+static const struct drm_encoder_funcs exynos_vidi_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
static const struct drm_encoder_helper_funcs exynos_vidi_encoder_helper_funcs = {
.mode_set = exynos_vidi_mode_set,
.enable = exynos_vidi_enable,
@@ -445,7 +449,13 @@ static int vidi_bind(struct device *dev, struct device *master, void *data)
return PTR_ERR(ctx->crtc);
}
- drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+ ret = drm_encoder_init(drm_dev, encoder, &exynos_vidi_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to initialize encoder ret = %d\n",
+ ret);
+ return ret;
+ }
drm_encoder_helper_add(encoder, &exynos_vidi_encoder_helper_funcs);
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 09b2cabb236f..f44586ce0fdf 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -36,9 +36,9 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_bridge.h>
#include <drm/drm_edid.h>
+#include <drm/drm_encoder.h>
#include <drm/drm_print.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>
#include "exynos_drm_crtc.h"
#include "regs-hdmi.h"
@@ -1575,6 +1575,11 @@ static void hdmi_disable(struct drm_encoder *encoder)
mutex_unlock(&hdata->mutex);
}
+static const struct drm_encoder_funcs exynos_hdmi_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+
static const struct drm_encoder_helper_funcs exynos_hdmi_encoder_helper_funcs = {
.mode_fixup = hdmi_mode_fixup,
.enable = hdmi_enable,
@@ -1862,7 +1867,13 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data)
hdata->phy_clk.enable = hdmiphy_clk_enable;
- drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
+ ret = drm_encoder_init(drm_dev, encoder, &exynos_hdmi_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to initialize encoder ret = %d\n",
+ ret);
+ return ret;
+ }
drm_encoder_helper_add(encoder, &exynos_hdmi_encoder_helper_funcs);
--
2.54.0