linux-kernel - [PATCH V5 2/9] pinctrl: imx: Support building i.MX pinctrl driver as module

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Message-Id: <1591875295-19427-3-git-send-email-Anson.Huang@nxp.com>
Date:   Thu, 11 Jun 2020 19:34:48 +0800
From:   Anson Huang <Anson.Huang@....com>
To:     aisheng.dong@....com, festevam@...il.com, shawnguo@...nel.org,
        stefan@...er.ch, kernel@...gutronix.de, linus.walleij@...aro.org,
        s.hauer@...gutronix.de, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     Linux-imx@....com
Subject: [PATCH V5 2/9] pinctrl: imx: Support building i.MX pinctrl driver as module

Export necessary functions to support building i.MX common pinctrl
driver and its user to be built as module.

i.MX common pinctrl driver should depend on CONFIG_OF to make sure
no build error when i.MX common pinctrl driver is enabled for difference
architectures without CONFIG_OF.

Also, module author, description and license should be added.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
Changes since V4:
	- add module author and description.
---
 drivers/pinctrl/freescale/Kconfig       | 3 ++-
 drivers/pinctrl/freescale/pinctrl-imx.c | 7 +++++++
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index a3a30f1d..e281c3f 100644
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0-only
 config PINCTRL_IMX
-	bool
+	tristate "IMX pinctrl driver"
+	depends on OF
 	select GENERIC_PINCTRL_GROUPS
 	select GENERIC_PINMUX_FUNCTIONS
 	select GENERIC_PINCONF
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c
index c1faae1..28be1d6 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.c
+++ b/drivers/pinctrl/freescale/pinctrl-imx.c
@@ -11,6 +11,7 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/mfd/syscon.h>
+#include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_address.h>
@@ -878,6 +879,7 @@ int imx_pinctrl_probe(struct platform_device *pdev,
 
 	return pinctrl_enable(ipctl->pctl);
 }
+EXPORT_SYMBOL_GPL(imx_pinctrl_probe);
 
 static int __maybe_unused imx_pinctrl_suspend(struct device *dev)
 {
@@ -897,3 +899,8 @@ const struct dev_pm_ops imx_pinctrl_pm_ops = {
 	SET_LATE_SYSTEM_SLEEP_PM_OPS(imx_pinctrl_suspend,
 					imx_pinctrl_resume)
 };
+EXPORT_SYMBOL_GPL(imx_pinctrl_pm_ops);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@...aro.org>");
+MODULE_DESCRIPTION("NXP i.MX common pinctrl driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4