From 3b3d17ae813a4eba353fdfd1a609adc0a0d2d591 Mon Sep 17 00:00:00 2001
From: Elaine Zhang <zhangqing@rock-chips.com>
Date: Thu, 16 Jul 2020 17:37:21 +0800
Subject: [PATCH] clk: rockchip: rk1808: support driver build as tristate
 module

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: I798e59971594f7691f1ad2b3a3e67cdd37736883
---
 drivers/clk/rockchip/Kconfig      |  2 +-
 drivers/clk/rockchip/clk-rk1808.c | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/rockchip/Kconfig b/drivers/clk/rockchip/Kconfig
index 103d53e85df5..4056ae0bbab8 100644
--- a/drivers/clk/rockchip/Kconfig
+++ b/drivers/clk/rockchip/Kconfig
@@ -24,7 +24,7 @@ config CLK_RV110X
 	  Build the driver for RV110x Clock Driver.
 
 config CLK_RK1808
-	bool "Rockchip RK1808 clock controller support"
+	tristate "Rockchip RK1808 clock controller support"
 	depends on ARM64 || COMPILE_TEST
 	default y
 	help
diff --git a/drivers/clk/rockchip/clk-rk1808.c b/drivers/clk/rockchip/clk-rk1808.c
index 1b7b8b8f153e..98b48293067a 100644
--- a/drivers/clk/rockchip/clk-rk1808.c
+++ b/drivers/clk/rockchip/clk-rk1808.c
@@ -4,8 +4,10 @@
  * Author: Elaine Zhang <zhangqing@rock-chips.com>
  */
 #include <linux/clk-provider.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/rk1808-cru.h>
 #include "clk.h"
@@ -1239,3 +1241,31 @@ static void __init rk1808_clk_init(struct device_node *np)
 }
 
 CLK_OF_DECLARE(rk1808_cru, "rockchip,rk1808-cru", rk1808_clk_init);
+
+static int __init clk_rk1808_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+
+	rk1808_clk_init(np);
+
+	return 0;
+}
+
+static const struct of_device_id clk_rk1808_match_table[] = {
+	{
+		.compatible = "rockchip,rk1808-cru",
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, clk_rk1808_match_table);
+
+static struct platform_driver clk_rk1808_driver = {
+	.driver		= {
+		.name	= "clk-rk1808",
+		.of_match_table = clk_rk1808_match_table,
+	},
+};
+builtin_platform_driver_probe(clk_rk1808_driver, clk_rk1808_probe);
+
+MODULE_DESCRIPTION("Rockchip RK1808 Clock Driver");
+MODULE_LICENSE("GPL");