linux-kernel - [PATCH V2 2/3] pinctrl: imx: Support building SCU pinctrl core driver as module

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Message-Id: <1599481953-32704-2-git-send-email-Anson.Huang@nxp.com>
Date:   Mon,  7 Sep 2020 20:32:32 +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 V2 2/3] pinctrl: imx: Support building SCU pinctrl core driver as module

Change PINCTR_IMX_SCU to tristate, remove unnecessary #ifdef and add
module author, description and license to support building SCU pinctrl
core driver as module.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
Changes since V1:
	- split V1 [1/2] patch to 2 patches, this patch supports building SCU pinctrl core
	  driver as module;
	- remove unnecessary #ifdef check and #else block.
---
 drivers/pinctrl/freescale/Kconfig       |  2 +-
 drivers/pinctrl/freescale/pinctrl-imx.h | 20 --------------------
 drivers/pinctrl/freescale/pinctrl-scu.c |  5 +++++
 3 files changed, 6 insertions(+), 21 deletions(-)

diff --git a/drivers/pinctrl/freescale/Kconfig b/drivers/pinctrl/freescale/Kconfig
index 08fcf5c..452c499 100644
--- a/drivers/pinctrl/freescale/Kconfig
+++ b/drivers/pinctrl/freescale/Kconfig
@@ -7,7 +7,7 @@ config PINCTRL_IMX
 	select REGMAP
 
 config PINCTRL_IMX_SCU
-	bool
+	tristate "IMX SCU pinctrl core driver"
 	depends on IMX_SCU
 	select PINCTRL_IMX
 
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.h b/drivers/pinctrl/freescale/pinctrl-imx.h
index 40927ca..fd8c4b6 100644
--- a/drivers/pinctrl/freescale/pinctrl-imx.h
+++ b/drivers/pinctrl/freescale/pinctrl-imx.h
@@ -144,7 +144,6 @@ struct imx_pinctrl_soc_info {
 int imx_pinctrl_probe(struct platform_device *pdev,
 			const struct imx_pinctrl_soc_info *info);
 
-#ifdef CONFIG_PINCTRL_IMX_SCU
 #define BM_PAD_CTL_GP_ENABLE		BIT(30)
 #define BM_PAD_CTL_IFMUX_ENABLE		BIT(31)
 #define BP_PAD_CTL_IFMUX		27
@@ -157,23 +156,4 @@ int imx_pinconf_set_scu(struct pinctrl_dev *pctldev, unsigned pin_id,
 void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
 			       unsigned int *pin_id, struct imx_pin *pin,
 			       const __be32 **list_p);
-#else
-static inline int imx_pinconf_get_scu(struct pinctrl_dev *pctldev,
-				      unsigned pin_id, unsigned long *config)
-{
-	return -EINVAL;
-}
-static inline int imx_pinconf_set_scu(struct pinctrl_dev *pctldev,
-				      unsigned pin_id, unsigned long *configs,
-				      unsigned num_configs)
-{
-	return -EINVAL;
-}
-static inline void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
-					    unsigned int *pin_id,
-					    struct imx_pin *pin,
-					    const __be32 **list_p)
-{
-}
-#endif
 #endif /* __DRIVERS_PINCTRL_IMX_H */
diff --git a/drivers/pinctrl/freescale/pinctrl-scu.c b/drivers/pinctrl/freescale/pinctrl-scu.c
index 9df45d3..59b5f8a 100644
--- a/drivers/pinctrl/freescale/pinctrl-scu.c
+++ b/drivers/pinctrl/freescale/pinctrl-scu.c
@@ -7,6 +7,7 @@
 
 #include <linux/err.h>
 #include <linux/firmware/imx/sci.h>
+#include <linux/module.h>
 #include <linux/of_address.h>
 #include <linux/pinctrl/pinctrl.h>
 #include <linux/platform_device.h>
@@ -123,3 +124,7 @@ void imx_pinctrl_parse_pin_scu(struct imx_pinctrl *ipctl,
 		pin_scu->mux_mode, pin_scu->config);
 }
 EXPORT_SYMBOL_GPL(imx_pinctrl_parse_pin_scu);
+
+MODULE_AUTHOR("Dong Aisheng <aisheng.dong@....com>");
+MODULE_DESCRIPTION("NXP i.MX SCU common pinctrl driver");
+MODULE_LICENSE("GPL v2");
-- 
2.7.4