linux-kernel - [PATCH 2/2] pinctrl: rockchip: make driver be tristate module

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Message-Id: <20200914003847.10341-1-jay.xu@rock-chips.com>
Date:   Mon, 14 Sep 2020 08:38:47 +0800
From:   Jianqun Xu <jay.xu@...k-chips.com>
To:     linus.walleij@...aro.org, heiko@...ech.de
Cc:     linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        Jianqun Xu <jay.xu@...k-chips.com>
Subject: [PATCH 2/2] pinctrl: rockchip: make driver be tristate module

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@...k-chips.com>
---
 drivers/pinctrl/Kconfig            |  2 +-
 drivers/pinctrl/pinctrl-rockchip.c | 13 +++++++++++++
 2 files changed, 14 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..927d132d6716 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>
@@ -4258,3 +4260,14 @@ static int __init rockchip_pinctrl_drv_register(void)
 	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);
-- 
2.17.1