[PATCH v1] drm/meson: improve encoder probe / initialization error handling
From: Martin Blumenstingl
Date: Sun Feb 18 2024 - 12:50:51 EST
Rename meson_encoder_{cvbs,dsi,hdmi}_init() to
meson_encoder_{cvbs,dsi,hdmi}_probe() so it's clear that these functions
are used at probe time during driver initialization. Also switch all
error prints inside those functions to use dev_err_probe() for
consistency.
This makes the code more straight forward to read and makes the error
prints within those functions consistent (by logging all -EPROBE_DEFER
with dev_dbg(), while actual errors are logged with dev_err() and get
the error value printed).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx>
---
This is meant to be applied on top of my other patch called
"drm/meson: Don't remove bridges which are created by other drivers" [0]
[0] https://lore.kernel.org/dri-devel/20240215220442.1343152-1-martin.blumenstingl@xxxxxxxxxxxxxx/
drivers/gpu/drm/meson/meson_drv.c | 6 +++---
drivers/gpu/drm/meson/meson_encoder_cvbs.c | 24 ++++++++++------------
drivers/gpu/drm/meson/meson_encoder_cvbs.h | 2 +-
drivers/gpu/drm/meson/meson_encoder_dsi.c | 23 +++++++++------------
drivers/gpu/drm/meson/meson_encoder_dsi.h | 2 +-
drivers/gpu/drm/meson/meson_encoder_hdmi.c | 15 +++++++-------
drivers/gpu/drm/meson/meson_encoder_hdmi.h | 2 +-
7 files changed, 35 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index cb674966e9ac..17a5cca007e2 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -312,7 +312,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
/* Encoder Initialization */
- ret = meson_encoder_cvbs_init(priv);
+ ret = meson_encoder_cvbs_probe(priv);
if (ret)
goto exit_afbcd;
@@ -326,12 +326,12 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
}
}
- ret = meson_encoder_hdmi_init(priv);
+ ret = meson_encoder_hdmi_probe(priv);
if (ret)
goto exit_afbcd;
if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
- ret = meson_encoder_dsi_init(priv);
+ ret = meson_encoder_dsi_probe(priv);
if (ret)
goto exit_afbcd;
}
diff --git a/drivers/gpu/drm/meson/meson_encoder_cvbs.c b/drivers/gpu/drm/meson/meson_encoder_cvbs.c
index 3407450435e2..d1191de855d9 100644
--- a/drivers/gpu/drm/meson/meson_encoder_cvbs.c
+++ b/drivers/gpu/drm/meson/meson_encoder_cvbs.c
@@ -219,7 +219,7 @@ static const struct drm_bridge_funcs meson_encoder_cvbs_bridge_funcs = {
.atomic_reset = drm_atomic_helper_bridge_reset,
};
-int meson_encoder_cvbs_init(struct meson_drm *priv)
+int meson_encoder_cvbs_probe(struct meson_drm *priv)
{
struct drm_device *drm = priv->drm;
struct meson_encoder_cvbs *meson_encoder_cvbs;
@@ -240,10 +240,9 @@ int meson_encoder_cvbs_init(struct meson_drm *priv)
meson_encoder_cvbs->next_bridge = of_drm_find_bridge(remote);
of_node_put(remote);
- if (!meson_encoder_cvbs->next_bridge) {
- dev_err(priv->dev, "Failed to find CVBS Connector bridge\n");
- return -EPROBE_DEFER;
- }
+ if (!meson_encoder_cvbs->next_bridge)
+ return dev_err_probe(priv->dev, -EPROBE_DEFER,
+ "Failed to find CVBS Connector bridge\n");
/* CVBS Encoder Bridge */
meson_encoder_cvbs->bridge.funcs = &meson_encoder_cvbs_bridge_funcs;
@@ -259,10 +258,9 @@ int meson_encoder_cvbs_init(struct meson_drm *priv)
/* Encoder */
ret = drm_simple_encoder_init(priv->drm, &meson_encoder_cvbs->encoder,
DRM_MODE_ENCODER_TVDAC);
- if (ret) {
- dev_err(priv->dev, "Failed to init CVBS encoder: %d\n", ret);
- return ret;
- }
+ if (ret)
+ return dev_err_probe(priv->dev, ret,
+ "Failed to init CVBS encoder\n");
meson_encoder_cvbs->encoder.possible_crtcs = BIT(0);
@@ -276,10 +274,10 @@ int meson_encoder_cvbs_init(struct meson_drm *priv)
/* Initialize & attach Bridge Connector */
connector = drm_bridge_connector_init(priv->drm, &meson_encoder_cvbs->encoder);
- if (IS_ERR(connector)) {
- dev_err(priv->dev, "Unable to create CVBS bridge connector\n");
- return PTR_ERR(connector);
- }
+ if (IS_ERR(connector))
+ return dev_err_probe(priv->dev, PTR_ERR(connector),
+ "Unable to create CVBS bridge connector\n");
+
drm_connector_attach_encoder(connector, &meson_encoder_cvbs->encoder);
priv->encoders[MESON_ENC_CVBS] = meson_encoder_cvbs;
diff --git a/drivers/gpu/drm/meson/meson_encoder_cvbs.h b/drivers/gpu/drm/meson/meson_encoder_cvbs.h
index 09710fec3c66..7b7bc85c03f7 100644
--- a/drivers/gpu/drm/meson/meson_encoder_cvbs.h
+++ b/drivers/gpu/drm/meson/meson_encoder_cvbs.h
@@ -24,7 +24,7 @@ struct meson_cvbs_mode {
/* Modes supported by the CVBS output */
extern struct meson_cvbs_mode meson_cvbs_modes[MESON_CVBS_MODES_COUNT];
-int meson_encoder_cvbs_init(struct meson_drm *priv);
+int meson_encoder_cvbs_probe(struct meson_drm *priv);
void meson_encoder_cvbs_remove(struct meson_drm *priv);
#endif /* __MESON_VENC_CVBS_H */
diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.c b/drivers/gpu/drm/meson/meson_encoder_dsi.c
index 311b91630fbe..7816902f5907 100644
--- a/drivers/gpu/drm/meson/meson_encoder_dsi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.c
@@ -100,7 +100,7 @@ static const struct drm_bridge_funcs meson_encoder_dsi_bridge_funcs = {
.atomic_reset = drm_atomic_helper_bridge_reset,
};
-int meson_encoder_dsi_init(struct meson_drm *priv)
+int meson_encoder_dsi_probe(struct meson_drm *priv)
{
struct meson_encoder_dsi *meson_encoder_dsi;
struct device_node *remote;
@@ -118,10 +118,9 @@ int meson_encoder_dsi_init(struct meson_drm *priv)
}
meson_encoder_dsi->next_bridge = of_drm_find_bridge(remote);
- if (!meson_encoder_dsi->next_bridge) {
- dev_dbg(priv->dev, "Failed to find DSI transceiver bridge\n");
- return -EPROBE_DEFER;
- }
+ if (!meson_encoder_dsi->next_bridge)
+ return dev_err_probe(priv->dev, -EPROBE_DEFER,
+ "Failed to find DSI transceiver bridge\n");
/* DSI Encoder Bridge */
meson_encoder_dsi->bridge.funcs = &meson_encoder_dsi_bridge_funcs;
@@ -135,19 +134,17 @@ int meson_encoder_dsi_init(struct meson_drm *priv)
/* Encoder */
ret = drm_simple_encoder_init(priv->drm, &meson_encoder_dsi->encoder,
DRM_MODE_ENCODER_DSI);
- if (ret) {
- dev_err(priv->dev, "Failed to init DSI encoder: %d\n", ret);
- return ret;
- }
+ if (ret)
+ return dev_err_probe(priv->dev, ret,
+ "Failed to init DSI encoder\n");
meson_encoder_dsi->encoder.possible_crtcs = BIT(0);
/* Attach DSI Encoder Bridge to Encoder */
ret = drm_bridge_attach(&meson_encoder_dsi->encoder, &meson_encoder_dsi->bridge, NULL, 0);
- if (ret) {
- dev_err(priv->dev, "Failed to attach bridge: %d\n", ret);
- return ret;
- }
+ if (ret)
+ return dev_err_probe(priv->dev, ret,
+ "Failed to attach bridge\n");
/*
* We should have now in place:
diff --git a/drivers/gpu/drm/meson/meson_encoder_dsi.h b/drivers/gpu/drm/meson/meson_encoder_dsi.h
index 9277d7015193..85d5b61805f2 100644
--- a/drivers/gpu/drm/meson/meson_encoder_dsi.h
+++ b/drivers/gpu/drm/meson/meson_encoder_dsi.h
@@ -7,7 +7,7 @@
#ifndef __MESON_ENCODER_DSI_H
#define __MESON_ENCODER_DSI_H
-int meson_encoder_dsi_init(struct meson_drm *priv);
+int meson_encoder_dsi_probe(struct meson_drm *priv);
void meson_encoder_dsi_remove(struct meson_drm *priv);
#endif /* __MESON_ENCODER_DSI_H */
diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
index c4686568c9ca..22e07847a9a7 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c
@@ -354,7 +354,7 @@ static const struct drm_bridge_funcs meson_encoder_hdmi_bridge_funcs = {
.atomic_reset = drm_atomic_helper_bridge_reset,
};
-int meson_encoder_hdmi_init(struct meson_drm *priv)
+int meson_encoder_hdmi_probe(struct meson_drm *priv)
{
struct meson_encoder_hdmi *meson_encoder_hdmi;
struct platform_device *pdev;
@@ -374,8 +374,8 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
meson_encoder_hdmi->next_bridge = of_drm_find_bridge(remote);
if (!meson_encoder_hdmi->next_bridge) {
- dev_err(priv->dev, "Failed to find HDMI transceiver bridge\n");
- ret = -EPROBE_DEFER;
+ ret = dev_err_probe(priv->dev, -EPROBE_DEFER,
+ "Failed to find HDMI transceiver bridge\n");
goto err_put_node;
}
@@ -393,7 +393,7 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
ret = drm_simple_encoder_init(priv->drm, &meson_encoder_hdmi->encoder,
DRM_MODE_ENCODER_TMDS);
if (ret) {
- dev_err(priv->dev, "Failed to init HDMI encoder: %d\n", ret);
+ dev_err_probe(priv->dev, ret, "Failed to init HDMI encoder\n");
goto err_put_node;
}
@@ -403,7 +403,7 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
ret = drm_bridge_attach(&meson_encoder_hdmi->encoder, &meson_encoder_hdmi->bridge, NULL,
DRM_BRIDGE_ATTACH_NO_CONNECTOR);
if (ret) {
- dev_err(priv->dev, "Failed to attach bridge: %d\n", ret);
+ dev_err_probe(priv->dev, ret, "Failed to attach bridge\n");
goto err_put_node;
}
@@ -411,8 +411,9 @@ int meson_encoder_hdmi_init(struct meson_drm *priv)
meson_encoder_hdmi->connector = drm_bridge_connector_init(priv->drm,
&meson_encoder_hdmi->encoder);
if (IS_ERR(meson_encoder_hdmi->connector)) {
- dev_err(priv->dev, "Unable to create HDMI bridge connector\n");
- ret = PTR_ERR(meson_encoder_hdmi->connector);
+ ret = dev_err_probe(priv->dev,
+ PTR_ERR(meson_encoder_hdmi->connector),
+ "Unable to create HDMI bridge connector\n");
goto err_put_node;
}
drm_connector_attach_encoder(meson_encoder_hdmi->connector,
diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.h b/drivers/gpu/drm/meson/meson_encoder_hdmi.h
index a6cd38eb5f71..fd5485875db8 100644
--- a/drivers/gpu/drm/meson/meson_encoder_hdmi.h
+++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.h
@@ -7,7 +7,7 @@
#ifndef __MESON_ENCODER_HDMI_H
#define __MESON_ENCODER_HDMI_H
-int meson_encoder_hdmi_init(struct meson_drm *priv);
+int meson_encoder_hdmi_probe(struct meson_drm *priv);
void meson_encoder_hdmi_remove(struct meson_drm *priv);
#endif /* __MESON_ENCODER_HDMI_H */
--
2.43.2