[PATCH 2/5] pinctrl: rockchip: make driver be tristate module

[Jianqun Xu]

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

Signed-off-by: Jianqun Xu <jay.xu@xxxxxxxxxxxxxx>
---
 drivers/pinctrl/Kconfig            |  2 +-
 drivers/pinctrl/pinctrl-rockchip.c | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 4284f39a5c61..743eb2bb8709 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -207,7 +207,7 @@ config PINCTRL_OXNAS
 	select MFD_SYSCON
 
 config PINCTRL_ROCKCHIP
-	bool
+	tristate "Rockchip gpio and pinctrl driver"
 	depends on OF
 	select PINMUX
 	select GENERIC_PINCONF
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 0401c1da79dd..cc7512acfc5f 100644
--- 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>
@@ -4257,4 +4259,20 @@ static int __init rockchip_pinctrl_drv_register(void)
 {
 	return platform_driver_register(&rockchip_pinctrl_driver);
 }
+
+static void __exit rockchip_pinctrl_drv_unregister(void)
+{
+	platform_driver_unregister(&rockchip_pinctrl_driver);
+}
+
+#ifdef CONFIG_PINCTRL_ROCKCHIP_MODULE
+module_init(rockchip_pinctrl_drv_register);
+#else
 postcore_initcall(rockchip_pinctrl_drv_register);
+#endif
+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);
-- 
2.17.1