[RFC PATCH v1 11/12] usb: typec: qcom: extract DRM bridge functionality to separate file

[Dmitry Baryshkov]

In order to simplify source code and to reduce the amount of ifdefs in
the C files, extract the DRM bridge functionality to the separate file.

Suggested-by: Heikki Krogerus <heikki.krogerus at linux.intel.com>
Suggested-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/usb/typec/tcpm/qcom/Makefile          |  4 ++
 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c | 40 +++----------------
 .../usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c | 38 ++++++++++++++++++
 .../usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h | 20 ++++++++++
 4 files changed, 67 insertions(+), 35 deletions(-)
 create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
 create mode 100644 drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h

diff --git a/drivers/usb/typec/tcpm/qcom/Makefile b/drivers/usb/typec/tcpm/qcom/Makefile
index dc1e8832e197..6d01ec97c9fd 100644
--- a/drivers/usb/typec/tcpm/qcom/Makefile
+++ b/drivers/usb/typec/tcpm/qcom/Makefile
@@ -4,3 +4,7 @@ obj-$(CONFIG_TYPEC_QCOM_PMIC)		+= qcom_pmic_tcpm.o
 qcom_pmic_tcpm-y			+= qcom_pmic_typec.o \
 					   qcom_pmic_typec_port.o \
 					   qcom_pmic_typec_pdphy.o
+
+ifneq ($(CONFIG_DRM),)
+	qcom_pmic_tcpm-y	+= qcom_pmic_typec_drm.o
+endif
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
index ceda594a8d56..b9d4856101c7 100644
--- a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec.c
@@ -18,8 +18,7 @@
 #include <linux/usb/tcpm.h>
 #include <linux/usb/typec_mux.h>
 
-#include <drm/drm_bridge.h>
-
+#include "qcom_pmic_typec_drm.h"
 #include "qcom_pmic_typec_pdphy.h"
 #include "qcom_pmic_typec_port.h"
 
@@ -34,9 +33,9 @@ struct pmic_typec {
 	struct tcpc_dev		tcpc;
 	struct pmic_typec_pdphy	*pmic_typec_pdphy;
 	struct pmic_typec_port	*pmic_typec_port;
+	struct pmic_typec_drm	*pmic_typec_drm;
 	bool			vbus_enabled;
 	struct mutex		lock;		/* VBUS state serialization */
-	struct drm_bridge	bridge;
 };
 
 #define tcpc_to_tcpm(_tcpc_) container_of(_tcpc_, struct pmic_typec, tcpc)
@@ -150,35 +149,6 @@ static int qcom_pmic_typec_init(struct tcpc_dev *tcpc)
 	return 0;
 }
 
-#if IS_ENABLED(CONFIG_DRM)
-static int qcom_pmic_typec_attach(struct drm_bridge *bridge,
-				     enum drm_bridge_attach_flags flags)
-{
-	return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL;
-}
-
-static const struct drm_bridge_funcs qcom_pmic_typec_bridge_funcs = {
-	.attach = qcom_pmic_typec_attach,
-};
-
-static int qcom_pmic_typec_init_drm(struct pmic_typec *tcpm)
-{
-	tcpm->bridge.funcs = &qcom_pmic_typec_bridge_funcs;
-#ifdef CONFIG_OF
-	tcpm->bridge.of_node = of_get_child_by_name(tcpm->dev->of_node, "connector");
-#endif
-	tcpm->bridge.ops = DRM_BRIDGE_OP_HPD;
-	tcpm->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
-
-	return devm_drm_bridge_add(tcpm->dev, &tcpm->bridge);
-}
-#else
-static int qcom_pmic_typec_init_drm(struct pmic_typec *tcpm)
-{
-	return 0;
-}
-#endif
-
 static int qcom_pmic_typec_probe(struct platform_device *pdev)
 {
 	struct pmic_typec *tcpm;
@@ -241,9 +211,9 @@ static int qcom_pmic_typec_probe(struct platform_device *pdev)
 	mutex_init(&tcpm->lock);
 	platform_set_drvdata(pdev, tcpm);
 
-	ret = qcom_pmic_typec_init_drm(tcpm);
-	if (ret)
-		return ret;
+	tcpm->pmic_typec_drm = qcom_pmic_typec_init_drm(dev);
+	if (IS_ERR(tcpm->pmic_typec_drm))
+		return PTR_ERR(tcpm->pmic_typec_drm);
 
 	tcpm->tcpc.fwnode = device_get_named_child_node(tcpm->dev, "connector");
 	if (!tcpm->tcpc.fwnode)
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
new file mode 100644
index 000000000000..e202eb7b52db
--- /dev/null
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+
+#include <linux/of.h>
+
+#include <drm/drm_bridge.h>
+
+struct pmic_typec_drm {
+	struct drm_bridge bridge;
+};
+
+static int qcom_pmic_typec_attach(struct drm_bridge *bridge,
+				     enum drm_bridge_attach_flags flags)
+{
+	return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL;
+}
+
+static const struct drm_bridge_funcs qcom_pmic_typec_bridge_funcs = {
+	.attach = qcom_pmic_typec_attach,
+};
+
+struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev)
+{
+	struct pmic_typec_drm *tcpm_drm;
+
+	tcpm_drm = devm_kzalloc(dev, sizeof(*tcpm_drm), GFP_KERNEL);
+	if (!tcpm_drm)
+		return ERR_PTR(-ENOMEM);
+
+	tcpm_drm->bridge.funcs = &qcom_pmic_typec_bridge_funcs;
+	tcpm_drm->bridge.of_node = of_get_child_by_name(dev->of_node, "connector");
+	tcpm_drm->bridge.ops = DRM_BRIDGE_OP_HPD;
+	tcpm_drm->bridge.type = DRM_MODE_CONNECTOR_DisplayPort;
+
+	return ERR_PTR(devm_drm_bridge_add(dev, &tcpm_drm->bridge));
+}
diff --git a/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h
new file mode 100644
index 000000000000..01f4bb71346b
--- /dev/null
+++ b/drivers/usb/typec/tcpm/qcom/qcom_pmic_typec_drm.h
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Linaro Ltd. All rights reserved.
+ */
+
+#ifndef __QCOM_PMIC_DRM_H__
+#define __QCOM_PMIC_DRM_H__
+
+struct pmic_typec_drm;
+
+#if IS_ENABLED(CONFIG_DRM)
+struct pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev);
+#else
+static inline pmic_typec_drm *qcom_pmic_typec_init_drm(struct device *dev)
+{
+	return NULL;
+}
+#endif
+
+#endif /* __QCOM_PMIC_DRM_H__ */
-- 
2.39.2