pinctrl: mediatek: make MediaTek pinctrl v2 driver ready for buidling loadable module

In the future we want to be able to build the MediaTek pinctrl driver,
based on paris, as kernel module. This patch allows pinctrl-paris.c, the
external interrupt controller mtk-eint.c, and pinctrl-mtk-common-v2.c to
be loadable as module.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/9feeb04805e5a406fe22a92e3f280abda39ddda4.1586289920.git.sean.wang@mediatek.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

5 files changed, 51 insertions, 4 deletions

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
index 701f9af63f5e..551ac716b10c 100644
--- a/drivers/pinctrl/mediatek/Kconfig
+++ b/drivers/pinctrl/mediatek/Kconfig
@@ -3,10 +3,12 @@ menu "MediaTek pinctrl drivers"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
 
 config EINT_MTK
-	bool "MediaTek External Interrupt Support"
+	tristate "MediaTek External Interrupt Support"
 	depends on PINCTRL_MTK || PINCTRL_MTK_MOORE || PINCTRL_MTK_PARIS || COMPILE_TEST
 	select GPIOLIB
 	select IRQ_DOMAIN
+	default y if PINCTRL_MTK || PINCTRL_MTK_MOORE
+	default PINCTRL_MTK_PARIS
 
 config PINCTRL_MTK
 	bool
@@ -17,6 +19,9 @@ config PINCTRL_MTK
 	select EINT_MTK
 	select OF_GPIO
 
+config PINCTRL_MTK_V2
+	tristate
+
 config PINCTRL_MTK_MOORE
 	bool
 	depends on OF
@@ -25,15 +30,17 @@ config PINCTRL_MTK_MOORE
 	select GENERIC_PINMUX_FUNCTIONS
 	select GPIOLIB
 	select OF_GPIO
+	select PINCTRL_MTK_V2
 
 config PINCTRL_MTK_PARIS
-	bool
+	tristate
 	depends on OF
 	select PINMUX
 	select GENERIC_PINCONF
 	select GPIOLIB
 	select EINT_MTK
 	select OF_GPIO
+	select PINCTRL_MTK_V2
 
 # For ARMv7 SoCs
 config PINCTRL_MT2701
diff --git a/drivers/pinctrl/mediatek/Makefile b/drivers/pinctrl/mediatek/Makefile
index a74325abd877..4b7132876e71 100644
--- a/drivers/pinctrl/mediatek/Makefile
+++ b/drivers/pinctrl/mediatek/Makefile
@@ -2,8 +2,9 @@
 # Core
 obj-$(CONFIG_EINT_MTK)		+= mtk-eint.o
 obj-$(CONFIG_PINCTRL_MTK)	+= pinctrl-mtk-common.o
-obj-$(CONFIG_PINCTRL_MTK_MOORE) += pinctrl-moore.o pinctrl-mtk-common-v2.o
-obj-$(CONFIG_PINCTRL_MTK_PARIS) += pinctrl-paris.o pinctrl-mtk-common-v2.o
+obj-$(CONFIG_PINCTRL_MTK_V2)	+= pinctrl-mtk-common-v2.o
+obj-$(CONFIG_PINCTRL_MTK_MOORE) += pinctrl-moore.o
+obj-$(CONFIG_PINCTRL_MTK_PARIS) += pinctrl-paris.o
 
 # SoC Drivers
 obj-$(CONFIG_PINCTRL_MT2701)	+= pinctrl-mt2701.o
diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
index 7e526bcf5e0b..22736f60c16c 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.c
+++ b/drivers/pinctrl/mediatek/mtk-eint.c
@@ -15,6 +15,7 @@
 #include <linux/io.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
+#include <linux/module.h>
 #include <linux/of_irq.h>
 #include <linux/platform_device.h>
 
@@ -379,6 +380,7 @@ int mtk_eint_do_suspend(struct mtk_eint *eint)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_eint_do_suspend);
 
 int mtk_eint_do_resume(struct mtk_eint *eint)
 {
@@ -386,6 +388,7 @@ int mtk_eint_do_resume(struct mtk_eint *eint)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_eint_do_resume);
 
 int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num,
 			  unsigned int debounce)
@@ -440,6 +443,7 @@ int mtk_eint_set_debounce(struct mtk_eint *eint, unsigned long eint_num,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_eint_set_debounce);
 
 int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
 {
@@ -451,6 +455,7 @@ int mtk_eint_find_irq(struct mtk_eint *eint, unsigned long eint_n)
 
 	return irq;
 }
+EXPORT_SYMBOL_GPL(mtk_eint_find_irq);
 
 int mtk_eint_do_init(struct mtk_eint *eint)
 {
@@ -495,3 +500,7 @@ int mtk_eint_do_init(struct mtk_eint *eint)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_eint_do_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MediaTek EINT Driver");
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index d3169a87e1b3..6ea40b501328 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -12,6 +12,7 @@
 #include <linux/gpio/driver.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/module.h>
 #include <linux/of_irq.h>
 
 #include "mtk-eint.h"
@@ -204,6 +205,7 @@ int mtk_hw_set_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_hw_set_value);
 
 int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
 		     int field, int *value)
@@ -223,6 +225,7 @@ int mtk_hw_get_value(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_hw_get_value);
 
 static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n)
 {
@@ -361,6 +364,7 @@ int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
 
 	return mtk_eint_do_init(hw->eint);
 }
+EXPORT_SYMBOL_GPL(mtk_build_eint);
 
 /* Revision 0 */
 int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
@@ -380,6 +384,7 @@ int mtk_pinconf_bias_disable_set(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set);
 
 int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw,
 				 const struct mtk_pin_desc *desc, int *res)
@@ -402,6 +407,7 @@ int mtk_pinconf_bias_disable_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get);
 
 int mtk_pinconf_bias_set(struct mtk_pinctrl *hw,
 			 const struct mtk_pin_desc *desc, bool pullup)
@@ -421,6 +427,7 @@ int mtk_pinconf_bias_set(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set);
 
 int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
 			 const struct mtk_pin_desc *desc, bool pullup, int *res)
@@ -440,6 +447,7 @@ int mtk_pinconf_bias_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get);
 
 /* Revision 1 */
 int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
@@ -454,6 +462,7 @@ int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1);
 
 int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
 				      const struct mtk_pin_desc *desc, int *res)
@@ -471,6 +480,7 @@ int mtk_pinconf_bias_disable_get_rev1(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_get_rev1);
 
 int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc, bool pullup)
@@ -490,6 +500,7 @@ int mtk_pinconf_bias_set_rev1(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_rev1);
 
 int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc, bool pullup,
@@ -515,6 +526,7 @@ int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_rev1);
 
 /* Combo for the following pull register type:
  * 1. PU + PD
@@ -715,6 +727,7 @@ int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
 out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo);
 
 int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc,
@@ -735,6 +748,7 @@ int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
 out:
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_combo);
 
 /* Revision 0 */
 int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
@@ -764,6 +778,7 @@ int mtk_pinconf_drive_set(struct mtk_pinctrl *hw,
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set);
 
 int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,
 			  const struct mtk_pin_desc *desc, int *val)
@@ -788,6 +803,7 @@ int mtk_pinconf_drive_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get);
 
 /* Revision 1 */
 int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw,
@@ -809,6 +825,7 @@ int mtk_pinconf_drive_set_rev1(struct mtk_pinctrl *hw,
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_rev1);
 
 int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw,
 			       const struct mtk_pin_desc *desc, int *val)
@@ -826,18 +843,21 @@ int mtk_pinconf_drive_get_rev1(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_rev1);
 
 int mtk_pinconf_drive_set_raw(struct mtk_pinctrl *hw,
 			       const struct mtk_pin_desc *desc, u32 arg)
 {
 	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV, arg);
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_set_raw);
 
 int mtk_pinconf_drive_get_raw(struct mtk_pinctrl *hw,
 			       const struct mtk_pin_desc *desc, int *val)
 {
 	return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV, val);
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_drive_get_raw);
 
 int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
 			     const struct mtk_pin_desc *desc, bool pullup,
@@ -878,6 +898,7 @@ int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_set);
 
 int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw,
 			     const struct mtk_pin_desc *desc, bool pullup,
@@ -920,6 +941,7 @@ int mtk_pinconf_adv_pull_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_pull_get);
 
 int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc, u32 arg)
@@ -946,6 +968,7 @@ int mtk_pinconf_adv_drive_set(struct mtk_pinctrl *hw,
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_set);
 
 int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc, u32 *val)
@@ -969,3 +992,4 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get);
diff --git a/drivers/pinctrl/mediatek/pinctrl-paris.c b/drivers/pinctrl/mediatek/pinctrl-paris.c
index 3853ec3a2a8e..d006ce4c9238 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/gpio/driver.h>
+#include <linux/module.h>
 #include <dt-bindings/pinctrl/mt65xx.h>
 #include "pinctrl-paris.h"
 
@@ -633,6 +634,7 @@ ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
 
 	return len;
 }
+EXPORT_SYMBOL_GPL(mtk_pctrl_show_one_pin);
 
 #define PIN_DBG_BUF_SZ 96
 static void mtk_pctrl_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
@@ -1021,6 +1023,7 @@ int mtk_paris_pinctrl_probe(struct platform_device *pdev,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mtk_paris_pinctrl_probe);
 
 static int mtk_paris_pinctrl_suspend(struct device *device)
 {
@@ -1040,3 +1043,6 @@ const struct dev_pm_ops mtk_paris_pinctrl_pm_ops = {
 	.suspend_noirq = mtk_paris_pinctrl_suspend,
 	.resume_noirq = mtk_paris_pinctrl_resume,
 };
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MediaTek Pinctrl Common Driver V2 Paris");