From 8c5d7c5d0fbc7d1c5f3ecd00537c7e4cdc7b9d51 Mon Sep 17 00:00:00 2001
From: Elaine Zhang <zhangqing@rock-chips.com>
Date: Thu, 16 Jul 2020 17:40:49 +0800
Subject: [PATCH] clk: rockchip: rk3328: support driver build as tristate
 module

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: Ie87e3c1acfe9a1f84b0b70d995fb1c85433cd998
---
 drivers/clk/rockchip/Kconfig      |  2 +-
 drivers/clk/rockchip/clk-rk3328.c | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/rockchip/Kconfig b/drivers/clk/rockchip/Kconfig
index 00c20f90974f..50dd15527f1c 100644
--- a/drivers/clk/rockchip/Kconfig
+++ b/drivers/clk/rockchip/Kconfig
@@ -73,7 +73,7 @@ config CLK_RK3308
 	  Build the driver for RK3308 Clock Driver.
 
 config CLK_RK3328
-	bool "Rockchip RK3328 clock controller support"
+	tristate "Rockchip RK3328 clock controller support"
 	depends on ARM64 || COMPILE_TEST
 	default y
 	help
diff --git a/drivers/clk/rockchip/clk-rk3328.c b/drivers/clk/rockchip/clk-rk3328.c
index 09c8534a91c6..a06dd077e1cf 100644
--- a/drivers/clk/rockchip/clk-rk3328.c
+++ b/drivers/clk/rockchip/clk-rk3328.c
@@ -6,8 +6,10 @@
 
 #include <linux/clk-provider.h>
 #include <linux/io.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_device.h>
 #include <linux/syscore_ops.h>
 #include <dt-bindings/clock/rk3328-cru.h>
 #include "clk.h"
@@ -921,3 +923,31 @@ static void __init rk3328_clk_init(struct device_node *np)
 	rockchip_clk_of_add_provider(np, ctx);
 }
 CLK_OF_DECLARE(rk3328_cru, "rockchip,rk3328-cru", rk3328_clk_init);
+
+static int __init clk_rk3328_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+
+	rk3328_clk_init(np);
+
+	return 0;
+}
+
+static const struct of_device_id clk_rk3328_match_table[] = {
+	{
+		.compatible = "rockchip,rk3328-cru",
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, clk_rk3328_match_table);
+
+static struct platform_driver clk_rk3328_driver = {
+	.driver		= {
+		.name	= "clk-rk3328",
+		.of_match_table = clk_rk3328_match_table,
+	},
+};
+builtin_platform_driver_probe(clk_rk3328_driver, clk_rk3328_probe);
+
+MODULE_DESCRIPTION("Rockchip RK3328 Clock Driver");
+MODULE_LICENSE("GPL");