[PATCH v5 1/2] pinctrl: mediatek: make MediaTek pinctrl v2 driver ready for buidling loadable module

From: light.hsieh
Date: Mon Mar 30 2020 - 08:01:02 EST

From: Light Hsieh <light.hsieh@xxxxxxxxxxxx>

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: Light Hsieh <light.hsieh@xxxxxxxxxxxx>
Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
---
drivers/pinctrl/mediatek/Kconfig | 11 +++++++++--
drivers/pinctrl/mediatek/Makefile | 5 +++--
drivers/pinctrl/mediatek/mtk-eint.c | 9 +++++++++
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
drivers/pinctrl/mediatek/pinctrl-paris.c | 6 ++++++
5 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
index 701f9af..551ac71 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 a74325a..4b71328 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 7e526bcf..22736f6 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 1da9425..563b662 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"
@@ -206,6 +207,7 @@ 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)
@@ -225,6 +227,7 @@ 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)
{
@@ -363,6 +366,7 @@ 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,
@@ -382,6 +386,7 @@ 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)
@@ -404,6 +409,7 @@ 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)
@@ -423,6 +429,7 @@ 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)
@@ -442,6 +449,7 @@ 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,
@@ -456,6 +464,7 @@ 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)
@@ -473,6 +482,7 @@ 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)
@@ -492,6 +502,7 @@ 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,
@@ -517,6 +528,7 @@ int mtk_pinconf_bias_get_rev1(struct mtk_pinctrl *hw,

return 0;
}
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_rev1);

/* Combo for the following pull register type:
* 1. PU + PD
@@ -717,6 +729,7 @@ 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,
@@ -737,6 +750,7 @@ 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,
@@ -766,6 +780,7 @@ 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)
@@ -790,6 +805,7 @@ 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,
@@ -811,6 +827,7 @@ 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)
@@ -828,18 +845,21 @@ 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,
@@ -880,6 +900,7 @@ 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,
@@ -922,6 +943,7 @@ 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)
@@ -948,6 +970,7 @@ 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)
@@ -971,3 +994,4 @@ 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 83bf29c..8823c0c 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,
@@ -1037,3 +1039,7 @@ static int mtk_paris_pinctrl_resume(struct device *device)
.suspend_noirq = mtk_paris_pinctrl_suspend,
.resume_noirq = mtk_paris_pinctrl_resume,
};
+EXPORT_SYMBOL_GPL(mtk_paris_pinctrl_probe);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MediaTek Pinctrl Common Driver V2 Paris");
--
1.8.1.1.dirty