dm: extcon: add an uclass for extcon

Add a new simple uclass for extcon. Currently all setup is done
in the probe. Uclass struct and ops are empty for now.

Signed-off-by: Svyatoslav Ryhel <[email protected]>
Reviewed-by: Simon Glass <[email protected]>

5 files changed, 39 insertions, 0 deletions

diff --git a/drivers/Kconfig b/drivers/Kconfig
index 9101e538b09..75937fbb6d9 100644
--- a/drivers/Kconfig
+++ b/drivers/Kconfig
@@ -36,6 +36,8 @@ source "drivers/dfu/Kconfig"
 
 source "drivers/dma/Kconfig"
 
+source "drivers/extcon/Kconfig"
+
 source "drivers/fastboot/Kconfig"
 
 source "drivers/firmware/Kconfig"
diff --git a/drivers/Makefile b/drivers/Makefile
index 58be410135d..ed1e71c4d65 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_$(SPL_TPL_)DM) += core/
 obj-$(CONFIG_$(SPL_TPL_)DMA) += dma/
 obj-$(CONFIG_$(SPL_TPL_)DMA_LEGACY) += dma/
 obj-$(CONFIG_$(SPL_TPL_)DFU) += dfu/
+obj-$(CONFIG_$(SPL_TPL_)EXTCON) += extcon/
 obj-$(CONFIG_$(SPL_TPL_)GPIO) += gpio/
 obj-$(CONFIG_$(SPL_TPL_)DRIVERS_MISC) += misc/
 obj-$(CONFIG_$(SPL_TPL_)SYSRESET) += sysreset/
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
new file mode 100644
index 00000000000..8a50250d21c
--- /dev/null
+++ b/drivers/extcon/Kconfig
@@ -0,0 +1,15 @@
+menu "Extcon Support"
+
+config EXTCON
+	bool "External Connector Class (extcon) support"
+	depends on DM
+	help
+	  Say Y here to enable external connector class (extcon) support.
+	  This allows monitoring external connectors and supports external
+	  connectors with multiple states; i.e., an extcon that may have
+	  multiple cables attached. For example, an external connector
+	  of a device may be used to connect an HDMI cable and a AC adaptor,
+	  and to host USB ports. Many of 30-pin connectors including PDMI
+	  are also good examples.
+
+endmenu
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
new file mode 100644
index 00000000000..2510e91c07c
--- /dev/null
+++ b/drivers/extcon/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2023 Svyatoslav Ryhel <[email protected]>
+
+obj-$(CONFIG_EXTCON) += extcon-uclass.o
diff --git a/drivers/extcon/extcon-uclass.c b/drivers/extcon/extcon-uclass.c
new file mode 100644
index 00000000000..9dd22b57626
--- /dev/null
+++ b/drivers/extcon/extcon-uclass.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2023 Svyatoslav Ryhel <[email protected]>
+ */
+
+#define LOG_CATEGORY UCLASS_EXTCON
+
+#include <common.h>
+#include <extcon.h>
+#include <dm.h>
+
+UCLASS_DRIVER(extcon) = {
+	.id			= UCLASS_EXTCON,
+	.name			= "extcon",
+	.per_device_plat_auto	= sizeof(struct extcon_uc_plat),
+};