From: Jianqun Xu <jay.xu@rock-chips.com>
Date: Fri, 5 Mar 2021 08:39:07 +0800
Subject: pinctrl: rockchip: make driver be tristate module

Git-commit: be786ac5a6c4bf4ef3e4c569a045d302c1e60fe6
Patch-mainline: v5.13-rc1
References: bsc#1192217

Make pinctrl-rockchip driver to be tristate module, support to build as
a module, this is useful for GKI.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Link: https://lore.kernel.org/r/20210305003907.1692515-3-jay.xu@rock-chips.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>
---
 drivers/pinctrl/Kconfig            |    2 +-
 drivers/pinctrl/pinctrl-rockchip.c |   13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -187,7 +187,7 @@ config PINCTRL_OXNAS
 	select MFD_SYSCON
 
 config PINCTRL_ROCKCHIP
-	bool
+	tristate "Rockchip gpio and pinctrl driver"
 	select PINMUX
 	select GENERIC_PINCONF
 	select GENERIC_IRQ_CHIP
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -16,10 +16,12 @@
  */
 
 #include <linux/init.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/bitops.h>
 #include <linux/gpio/driver.h>
+#include <linux/of_device.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/pinctrl/machine.h>
@@ -4257,3 +4259,14 @@ static int __init rockchip_pinctrl_drv_r
 	return platform_driver_register(&rockchip_pinctrl_driver);
 }
 postcore_initcall(rockchip_pinctrl_drv_register);
+
+static void __exit rockchip_pinctrl_drv_unregister(void)
+{
+	platform_driver_unregister(&rockchip_pinctrl_driver);
+}
+module_exit(rockchip_pinctrl_drv_unregister);
+
+MODULE_DESCRIPTION("ROCKCHIP Pin Controller Driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pinctrl-rockchip");
+MODULE_DEVICE_TABLE(of, rockchip_pinctrl_dt_match);