[PATCH v4] drm/rockchip: Remove dependency on DRM simple helpers

Diogo Silva diogompaissilva at gmail.com
Thu Jul 2 13:18:58 PDT 2026


Simple KMS helper are deprecated since they only add an intermediate
layer between drivers and the atomic modesetting.
This patch removes the drm_simple_encoder_init() helper usage in the
rockchip drivers by open coding it and using the encoder atomic helpers
directly. This is a step to eventually get rid of this simple KMS helper,
once all drivers that use it have been converted.

Reviewed-by: Javier Martinez Canillas <javierm at redhat.com>
Signed-off-by: Diogo Silva <diogompaissilva at gmail.com>
---
v4:
 - improved commit message based on Javier Canillas feedback

v3:
 - rebase on drm-tip tree

 drivers/gpu/drm/rockchip/analogix_dp-rockchip.c  | 9 ++++++---
 drivers/gpu/drm/rockchip/cdn-dp-core.c           | 9 ++++++---
 drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c  | 9 +++++++--
 drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c | 8 ++++++--
 drivers/gpu/drm/rockchip/dw_dp-rockchip.c        | 1 -
 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c      | 1 -
 drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c   | 1 -
 drivers/gpu/drm/rockchip/rk3066_hdmi.c           | 8 ++++++--
 drivers/gpu/drm/rockchip/rockchip_lvds.c         | 9 +++++++--
 drivers/gpu/drm/rockchip/rockchip_rgb.c          | 8 ++++++--
 10 files changed, 44 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 776954c7d052..46c245e35d21 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -30,7 +30,6 @@
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"

@@ -303,6 +302,10 @@ rockchip_dp_drm_encoder_atomic_check(struct
drm_encoder *encoder,
        return 0;
 }

+static const struct drm_encoder_funcs rockchip_dp_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const struct drm_encoder_helper_funcs
rockchip_dp_encoder_helper_funcs = {
        .mode_fixup = rockchip_dp_drm_encoder_mode_fixup,
        .mode_set = rockchip_dp_drm_encoder_mode_set,
@@ -361,8 +364,8 @@ static int rockchip_dp_drm_create_encoder(struct
rockchip_dp_device *dp)
                                                             dev->of_node);
        DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);

-       ret = drm_simple_encoder_init(drm_dev, encoder,
-                                     DRM_MODE_ENCODER_TMDS);
+       ret = drm_encoder_init(drm_dev, encoder, &rockchip_dp_encoder_funcs,
+                              DRM_MODE_ENCODER_TMDS, NULL);
        if (ret) {
                DRM_ERROR("failed to initialize encoder with drm\n");
                return ret;
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c
b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 190cce9530c8..c3f41a4449f5 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -23,7 +23,6 @@
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "cdn-dp-core.h"
 #include "cdn-dp-reg.h"
@@ -671,6 +670,10 @@ static int cdn_dp_encoder_atomic_check(struct
drm_encoder *encoder,
        return 0;
 }

+static const struct drm_encoder_funcs cdn_dp_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const struct drm_encoder_helper_funcs cdn_dp_encoder_helper_funcs = {
        .atomic_check = cdn_dp_encoder_atomic_check,
 };
@@ -988,8 +991,8 @@ static int cdn_dp_bind(struct device *dev, struct
device *master, void *data)
                                                             dev->of_node);
        DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);

-       ret = drm_simple_encoder_init(drm_dev, encoder,
-                                     DRM_MODE_ENCODER_TMDS);
+       ret = drm_encoder_init(drm_dev, encoder, &cdn_dp_encoder_funcs,
+                              DRM_MODE_ENCODER_TMDS, NULL);
        if (ret) {
                DRM_ERROR("failed to initialize encoder with drm\n");
                return ret;
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 3547d91b25d3..a09b382d208e 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -25,7 +25,6 @@
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"

@@ -825,6 +824,10 @@ static void dw_mipi_dsi_encoder_enable(struct
drm_encoder *encoder)
        clk_disable_unprepare(dsi->grf_clk);
 }

+static const struct drm_encoder_funcs dw_mipi_dsi_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const struct drm_encoder_helper_funcs
 dw_mipi_dsi_encoder_helper_funcs = {
        .atomic_check = dw_mipi_dsi_encoder_atomic_check,
@@ -840,7 +843,9 @@ static int rockchip_dsi_drm_create_encoder(struct
dw_mipi_dsi_rockchip *dsi,
        encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
                                                             dsi->dev->of_node);

-       ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI);
+       ret = drm_encoder_init(drm_dev, encoder,
+                               &dw_mipi_dsi_encoder_funcs,
+                               DRM_MODE_ENCODER_DSI, NULL);
        if (ret) {
                DRM_ERROR("Failed to initialize encoder with drm\n");
                return ret;
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c
b/drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c
index d2e76d36d724..9dc207c2d20d 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi2-rockchip.c
@@ -23,7 +23,6 @@
 #include <drm/bridge/dw_mipi_dsi2.h>
 #include <drm/drm_mipi_dsi.h>
 #include <drm/drm_of.h>
-#include <drm/drm_simple_kms_helper.h>

 #include <uapi/linux/videodev2.h>

@@ -275,6 +274,10 @@ dw_mipi_dsi2_encoder_atomic_check(struct
drm_encoder *encoder,
        return 0;
 }

+static const struct drm_encoder_funcs dw_mipi_dsi2_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const struct drm_encoder_helper_funcs
 dw_mipi_dsi2_encoder_helper_funcs = {
        .atomic_enable = dw_mipi_dsi2_encoder_atomic_enable,
@@ -290,7 +293,8 @@ static int rockchip_dsi2_drm_create_encoder(struct
dw_mipi_dsi2_rockchip *dsi2,
        encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,

dsi2->dev->of_node);

-       ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_DSI);
+       ret = drm_encoder_init(drm_dev, encoder, &dw_mipi_dsi2_encoder_funcs,
+                              DRM_MODE_ENCODER_DSI, NULL);
        if (ret) {
                dev_err(dsi2->dev, "Failed to initialize encoder with drm\n");
                return ret;
diff --git a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
index 0de822360c8d..b23efb153c9e 100644
--- a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
@@ -20,7 +20,6 @@
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index cffc0af5190f..b6e154c35e7c 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -18,7 +18,6 @@
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
index f35484715c2d..af34062685cd 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi_qp-rockchip.c
@@ -24,7 +24,6 @@
 #include <drm/drm_managed.h>
 #include <drm/drm_of.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"

diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index 1996f8656612..b4ba9f894360 100644
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -12,7 +12,6 @@
 #include <drm/drm_of.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include <linux/clk.h>
 #include <linux/mfd/syscon.h>
@@ -454,6 +453,10 @@ rk3066_hdmi_encoder_atomic_check(struct
drm_encoder *encoder,
        return 0;
 }

+static const struct drm_encoder_funcs rk3066_hdmi_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const
 struct drm_encoder_helper_funcs rk3066_hdmi_encoder_helper_funcs = {
        .atomic_check   = rk3066_hdmi_encoder_atomic_check,
@@ -696,7 +699,8 @@ rk3066_hdmi_register(struct drm_device *drm,
struct rk3066_hdmi *hdmi)
                return -EPROBE_DEFER;

        drm_encoder_helper_add(encoder, &rk3066_hdmi_encoder_helper_funcs);
-       drm_simple_encoder_init(drm, encoder, DRM_MODE_ENCODER_TMDS);
+       drm_encoder_init(drm, encoder, &rk3066_hdmi_encoder_funcs,
+                        DRM_MODE_ENCODER_TMDS, NULL);

        hdmi->bridge.driver_private = hdmi;
        hdmi->bridge.funcs = &rk3066_hdmi_bridge_funcs;
diff --git a/drivers/gpu/drm/rockchip/rockchip_lvds.c
b/drivers/gpu/drm/rockchip/rockchip_lvds.c
index 7a0c4fa29f2f..f3be2c91d147 100644
--- a/drivers/gpu/drm/rockchip/rockchip_lvds.c
+++ b/drivers/gpu/drm/rockchip/rockchip_lvds.c
@@ -24,7 +24,6 @@
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"
 #include "rockchip_lvds.h"
@@ -427,6 +426,10 @@ static void px30_lvds_encoder_disable(struct
drm_encoder *encoder)
        drm_panel_unprepare(lvds->panel);
 }

+static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const
 struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
        .enable = rk3288_lvds_encoder_enable,
@@ -594,7 +597,9 @@ static int rockchip_lvds_bind(struct device *dev,
struct device *master,
        encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
                                                             dev->of_node);

-       ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_LVDS);
+       ret = drm_encoder_init(drm_dev, encoder,
+                                     &rockchip_lvds_encoder_funcs,
+                                     DRM_MODE_ENCODER_LVDS, NULL);
        if (ret < 0) {
                drm_err(drm_dev,
                        "failed to initialize encoder: %d\n", ret);
diff --git a/drivers/gpu/drm/rockchip/rockchip_rgb.c
b/drivers/gpu/drm/rockchip/rockchip_rgb.c
index add3123e5ce7..2ad24b914989 100644
--- a/drivers/gpu/drm/rockchip/rockchip_rgb.c
+++ b/drivers/gpu/drm/rockchip/rockchip_rgb.c
@@ -17,7 +17,6 @@
 #include <drm/drm_panel.h>
 #include <drm/drm_print.h>
 #include <drm/drm_probe_helper.h>
-#include <drm/drm_simple_kms_helper.h>

 #include "rockchip_drm_drv.h"
 #include "rockchip_rgb.h"
@@ -65,6 +64,10 @@ rockchip_rgb_encoder_atomic_check(struct
drm_encoder *encoder,
        return 0;
 }

+static const struct drm_encoder_funcs rockchip_rgb_encoder_funcs = {
+       .destroy = drm_encoder_cleanup,
+};
+
 static const
 struct drm_encoder_helper_funcs rockchip_rgb_encoder_helper_funcs = {
        .atomic_check = rockchip_rgb_encoder_atomic_check,
@@ -127,7 +130,8 @@ struct rockchip_rgb *rockchip_rgb_init(struct device *dev,
        encoder = &rgb->encoder.encoder;
        encoder->possible_crtcs = drm_crtc_mask(crtc);

-       ret = drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_NONE);
+       ret = drm_encoder_init(drm_dev, encoder, &rockchip_rgb_encoder_funcs,
+                              DRM_MODE_ENCODER_NONE, NULL);
        if (ret < 0) {
                DRM_DEV_ERROR(drm_dev->dev,
                              "failed to initialize encoder: %d\n", ret);
--
2.51.2



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