From 3b5e5eae9751f934e0a9733fc4244da9a933380a Mon Sep 17 00:00:00 2001
From: Shunhua Lan <lsh@rock-chips.com>
Date: Mon, 11 Sep 2023 14:46:26 +0800
Subject: [PATCH] media: rockchip: hdmirx: create hdmirx class

There will be many hdmirx devices in Rockchip SOCs
Here create a hdmirx class for those hdmirx devices

Signed-off-by: Shunhua Lan <lsh@rock-chips.com>
Change-Id: Id47af8a01b94c37e2bc40c5671f64cf9f3deebee
---
 drivers/media/platform/Makefile               |  2 +-
 .../media/platform/rockchip/hdmirx/Kconfig    | 12 ++++++
 .../media/platform/rockchip/hdmirx/Makefile   |  2 +
 .../rockchip/hdmirx/rk_hdmirx_class.c         | 37 +++++++++++++++++++
 include/linux/rk_hdmirx_class.h               | 13 +++++++
 5 files changed, 65 insertions(+), 1 deletion(-)
 create mode 100644 drivers/media/platform/rockchip/hdmirx/rk_hdmirx_class.c
 create mode 100644 include/linux/rk_hdmirx_class.h

diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 740f6401cb09..f3f5dca58b9c 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -57,7 +57,7 @@ obj-$(CONFIG_VIDEO_ROCKCHIP_CIF)	+= rockchip/cif/
 obj-$(CONFIG_VIDEO_ROCKCHIP_RKISP1)	+= rockchip/isp1/
 obj-$(CONFIG_VIDEO_ROCKCHIP_ISP)	+= rockchip/isp/
 obj-$(CONFIG_VIDEO_ROCKCHIP_ISPP)	+= rockchip/ispp/
-obj-$(CONFIG_VIDEO_ROCKCHIP_HDMIRX)	+= rockchip/hdmirx/
+obj-$(CONFIG_VIDEO_ROCKCHIP_HDMIRX_CLASS) += rockchip/hdmirx/
 
 obj-y	+= omap/
 
diff --git a/drivers/media/platform/rockchip/hdmirx/Kconfig b/drivers/media/platform/rockchip/hdmirx/Kconfig
index 9933c2e48ec7..be9ea7003c3c 100644
--- a/drivers/media/platform/rockchip/hdmirx/Kconfig
+++ b/drivers/media/platform/rockchip/hdmirx/Kconfig
@@ -1,5 +1,16 @@
 # SPDX-License-Identifier: GPL-2.0
 
+config VIDEO_ROCKCHIP_HDMIRX_CLASS
+	tristate "Rockchip HDMI Receiver Devices Class Support"
+	help
+	  There are many hdmirx devices in Rockchip SOCs, eg.
+	  rkhdmirx rk628 lut6911 it6616
+	  This driver create a class for those hdmirx devices
+	  And hdmirx drivers can add hdmirx properties for those
+	  hdmirx devices
+
+	  To compile this driver as a module, choose M here.
+
 config VIDEO_ROCKCHIP_HDMIRX
 	tristate "Rockchip HDMI Receiver driver"
 	depends on VIDEO_V4L2
@@ -8,6 +19,7 @@ config VIDEO_ROCKCHIP_HDMIRX
 	select VIDEO_V4L2_SUBDEV_API
 	select VIDEOBUF2_DMA_CONTIG
 	select HDMI
+	select VIDEO_ROCKCHIP_HDMIRX_CLASS
 	help
 	  Support for Rockchip HDMI RX PHY and Controller.
 	  This driver supports HDMI 2.0 version.
diff --git a/drivers/media/platform/rockchip/hdmirx/Makefile b/drivers/media/platform/rockchip/hdmirx/Makefile
index 280fc1994c5b..9e7fb30d1880 100644
--- a/drivers/media/platform/rockchip/hdmirx/Makefile
+++ b/drivers/media/platform/rockchip/hdmirx/Makefile
@@ -1,4 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
+rockchip-hdmirx-class-objs := rk_hdmirx_class.o
 rockchip-hdmirx-objs := rk_hdmirx.o rk_hdmirx_cec.o rk_hdmirx_hdcp.o
 
+obj-$(CONFIG_VIDEO_ROCKCHIP_HDMIRX_CLASS) += rockchip-hdmirx-class.o
 obj-$(CONFIG_VIDEO_ROCKCHIP_HDMIRX) += rockchip-hdmirx.o
diff --git a/drivers/media/platform/rockchip/hdmirx/rk_hdmirx_class.c b/drivers/media/platform/rockchip/hdmirx/rk_hdmirx_class.c
new file mode 100644
index 000000000000..1aa66d3c080c
--- /dev/null
+++ b/drivers/media/platform/rockchip/hdmirx/rk_hdmirx_class.c
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 Rockchip Electronics Co. Ltd.
+ *
+ * Author: Shunhua Lan <lsh@rock-chips.com>
+ */
+#include <linux/fs.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/rk_hdmirx_class.h>
+
+static struct class *hdmirx_class;
+
+struct class *rk_hdmirx_class(void)
+{
+	return hdmirx_class;
+}
+EXPORT_SYMBOL(rk_hdmirx_class);
+
+static int __init rk_hdmirx_class_init(void)
+{
+	hdmirx_class = class_create(THIS_MODULE, "hdmirx");
+	if (IS_ERR(hdmirx_class))
+		return PTR_ERR(hdmirx_class);
+	return 0;
+}
+subsys_initcall(rk_hdmirx_class_init)
+
+static void __exit rk_hdmirx_class_exit(void)
+{
+	class_destroy(hdmirx_class);
+}
+module_exit(rk_hdmirx_class_exit);
+
+MODULE_DESCRIPTION("Rockchip HDMI Receiver Class Driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/rk_hdmirx_class.h b/include/linux/rk_hdmirx_class.h
new file mode 100644
index 000000000000..d3a3e434b030
--- /dev/null
+++ b/include/linux/rk_hdmirx_class.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2021 Rockchip Electronics Co. Ltd.
+ *
+ * Author: Dingxian Wen <shawn.wen@rock-chips.com>
+ */
+
+#ifndef __RK_HDMIRX__DEV_H__
+#define __RK_HDMIRX__DEV_H__
+
+struct class *rk_hdmirx_class(void);
+
+#endif