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[v1,1/2] pinctrl: make MediaTek pinctrl v2 driver ready for buidling kernel module

Message ID 1581574105-1160-1-git-send-email-light.hsieh@mediatek.com
State New
Headers show
Series [v1,1/2] pinctrl: make MediaTek pinctrl v2 driver ready for buidling kernel module | expand

Commit Message

Light Hsieh (謝明燈) Feb. 13, 2020, 6:08 a.m. UTC 
From: Light Hsieh <light.hsieh@mediatek.com>

Google plan to make platform driver as kernel module for future
Andriod kernel. This patch make platforms that use pinctrl-paris.c
of MediaTek pinctrl v2 ready for building kernel module.

Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
---
 drivers/pinctrl/mediatek/mtk-eint.c              |  9 +++++++++
 drivers/pinctrl/mediatek/pinctrl-mt6765.c        |  4 ++++
 drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
 drivers/pinctrl/mediatek/pinctrl-paris.c         |  5 +++++
 drivers/pinctrl/pinconf-generic.c                |  1 +
 5 files changed, 43 insertions(+)

Comments

Light Hsieh (謝明燈) Feb. 13, 2020, 6:17 a.m. UTC | #1 
Dear Reviewers:

Google plan to make platform driver as kernel module in future Android
kernel.
This patch series prepare to make platforms that use MediaTek pinctrl
paris driver (pinctrl-paris.c, pinctrl-mtk-common-v2.c, and mtk-eint.c)
compatible for building either kernel module or built-in.

Please give your comments.

Light

On Thu, 2020-02-13 at 14:08 +0800, light.hsieh@mediatek.com wrote:
> From: Light Hsieh <light.hsieh@mediatek.com>
> 
> Google plan to make platform driver as kernel module for future
> Andriod kernel. This patch make platforms that use pinctrl-paris.c
> of MediaTek pinctrl v2 ready for building kernel module.
> 
> Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
> ---
>  drivers/pinctrl/mediatek/mtk-eint.c              |  9 +++++++++
>  drivers/pinctrl/mediatek/pinctrl-mt6765.c        |  4 ++++
>  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
>  drivers/pinctrl/mediatek/pinctrl-paris.c         |  5 +++++
>  drivers/pinctrl/pinconf-generic.c                |  1 +
>  5 files changed, 43 insertions(+)
> 
> diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
> index 7e526bcf..99703a8 100644
> --- a/drivers/pinctrl/mediatek/mtk-eint.c
> +++ b/drivers/pinctrl/mediatek/mtk-eint.c
> @@ -9,6 +9,7 @@
>   *
>   */
>  
> +#include <linux/module.h>
>  #include <linux/delay.h>
>  #include <linux/err.h>
>  #include <linux/gpio/driver.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-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> index 905dae8c..2c59d39 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> @@ -6,6 +6,7 @@
>   *
>   */
>  
> +#include <linux/module.h>
>  #include "pinctrl-mtk-mt6765.h"
>  #include "pinctrl-paris.h"
>  
> @@ -1103,3 +1104,6 @@ static int __init mt6765_pinctrl_init(void)
>  	return platform_driver_register(&mt6765_pinctrl_driver);
>  }
>  arch_initcall(mt6765_pinctrl_init);
> +
> +MODULE_LICENSE("GPL v2");
> +MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver");
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> index 1da9425..cdf2d69 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> @@ -6,6 +6,7 @@
>   *
>   */
>  
> +#include <linux/module.h>
>  #include <dt-bindings/pinctrl/mt65xx.h>
>  #include <linux/device.h>
>  #include <linux/err.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_gev1);
>  
>  /* 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..af97794 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
> @@ -9,6 +9,7 @@
>   *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
>   */
>  
> +#include <linux/module.h>
>  #include <linux/gpio/driver.h>
>  #include <dt-bindings/pinctrl/mt65xx.h>
>  #include "pinctrl-paris.h"
> @@ -1037,3 +1038,7 @@ 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");
> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
> index 9eb8630..dfef471 100644
> --- a/drivers/pinctrl/pinconf-generic.c
> +++ b/drivers/pinctrl/pinconf-generic.c
> @@ -286,6 +286,7 @@ int pinconf_generic_parse_dt_config(struct device_node *np,
>  	kfree(cfg);
>  	return ret;
>  }
> +EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config);
>  
>  int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
>  		struct device_node *np, struct pinctrl_map **map,
Matthias Brugger Feb. 14, 2020, 10:37 a.m. UTC | #2 
On 13/02/2020 07:17, Light Hsieh wrote:
> Dear Reviewers:
> 
> Google plan to make platform driver as kernel module in future Android
> kernel.
> This patch series prepare to make platforms that use MediaTek pinctrl
> paris driver (pinctrl-paris.c, pinctrl-mtk-common-v2.c, and mtk-eint.c)
> compatible for building either kernel module or built-in.
> 
> Please give your comments.
> 

I think I didn't explain myself good enough.
These should be three patches:

1. change mtk-eint driver + Kconfig to be loadable as a module
2. change pinctrl-paris + Kconfig to be loadable as a module
3. change mt6765.

Please make sure that every patch compiles and does not break the system. This
will later help to use git-bisect to hunt down bugs in the kernel.

Regards,
Matthias

> Light
> 
> On Thu, 2020-02-13 at 14:08 +0800, light.hsieh@mediatek.com wrote:
>> From: Light Hsieh <light.hsieh@mediatek.com>
>>
>> Google plan to make platform driver as kernel module for future
>> Andriod kernel. This patch make platforms that use pinctrl-paris.c
>> of MediaTek pinctrl v2 ready for building kernel module.
>>
>> Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
>> ---
>>  drivers/pinctrl/mediatek/mtk-eint.c              |  9 +++++++++
>>  drivers/pinctrl/mediatek/pinctrl-mt6765.c        |  4 ++++
>>  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
>>  drivers/pinctrl/mediatek/pinctrl-paris.c         |  5 +++++
>>  drivers/pinctrl/pinconf-generic.c                |  1 +
>>  5 files changed, 43 insertions(+)
>>
>> diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
>> index 7e526bcf..99703a8 100644
>> --- a/drivers/pinctrl/mediatek/mtk-eint.c
>> +++ b/drivers/pinctrl/mediatek/mtk-eint.c
>> @@ -9,6 +9,7 @@
>>   *
>>   */
>>  
>> +#include <linux/module.h>
>>  #include <linux/delay.h>
>>  #include <linux/err.h>
>>  #include <linux/gpio/driver.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-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>> index 905dae8c..2c59d39 100644
>> --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>> +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>> @@ -6,6 +6,7 @@
>>   *
>>   */
>>  
>> +#include <linux/module.h>
>>  #include "pinctrl-mtk-mt6765.h"
>>  #include "pinctrl-paris.h"
>>  
>> @@ -1103,3 +1104,6 @@ static int __init mt6765_pinctrl_init(void)
>>  	return platform_driver_register(&mt6765_pinctrl_driver);
>>  }
>>  arch_initcall(mt6765_pinctrl_init);
>> +
>> +MODULE_LICENSE("GPL v2");
>> +MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver");
>> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>> index 1da9425..cdf2d69 100644
>> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>> @@ -6,6 +6,7 @@
>>   *
>>   */
>>  
>> +#include <linux/module.h>
>>  #include <dt-bindings/pinctrl/mt65xx.h>
>>  #include <linux/device.h>
>>  #include <linux/err.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_gev1);
>>  
>>  /* 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..af97794 100644
>> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
>> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
>> @@ -9,6 +9,7 @@
>>   *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
>>   */
>>  
>> +#include <linux/module.h>
>>  #include <linux/gpio/driver.h>
>>  #include <dt-bindings/pinctrl/mt65xx.h>
>>  #include "pinctrl-paris.h"
>> @@ -1037,3 +1038,7 @@ 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");
>> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
>> index 9eb8630..dfef471 100644
>> --- a/drivers/pinctrl/pinconf-generic.c
>> +++ b/drivers/pinctrl/pinconf-generic.c
>> @@ -286,6 +286,7 @@ int pinconf_generic_parse_dt_config(struct device_node *np,
>>  	kfree(cfg);
>>  	return ret;
>>  }
>> +EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config);
>>  
>>  int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
>>  		struct device_node *np, struct pinctrl_map **map,
> 
> _______________________________________________
> Linux-mediatek mailing list
> Linux-mediatek@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-mediatek
>
Light Hsieh (謝明燈) Feb. 14, 2020, 11:02 a.m. UTC | #3 
On Fri, 2020-02-14 at 11:37 +0100, Matthias Brugger wrote:
> 
> On 13/02/2020 07:17, Light Hsieh wrote:
> > Dear Reviewers:
> > 
> > Google plan to make platform driver as kernel module in future Android
> > kernel.
> > This patch series prepare to make platforms that use MediaTek pinctrl
> > paris driver (pinctrl-paris.c, pinctrl-mtk-common-v2.c, and mtk-eint.c)
> > compatible for building either kernel module or built-in.
> > 
> > Please give your comments.
> > 
> 
> I think I didn't explain myself good enough.
> These should be three patches:
> 
> 1. change mtk-eint driver + Kconfig to be loadable as a module
> 2. change pinctrl-paris + Kconfig to be loadable as a module
> 3. change mt6765.
> 
> Please make sure that every patch compiles and does not break the system. This
> will later help to use git-bisect to hunt down bugs in the kernel.
> 
> Regards,
> Matthias
> 

Actually, I don't understand the necessity of splitting into 2 or 3
patches.

1. mtk-eint cannot be built as loadable module when pinctrl-paris and
pinctrl-mtk-common-v2 is not built as loadable module.

2. pinctrl-paris and pinctrl-mtk-common-v2 cannot be built as loadable
module when pinctrl-mtk6765 is not built as loadable module

3. besides, if pinctrl-mtk675 and any other MediaTek platform pinctrl
driver that use mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 are
built-in, mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 cannot be
built as loadable module.

The rationale can be learned from the description of change made to
Kconfig and Makefile.

So, just applying patch 1 and patch 2 of your proposal does not make
sense.

BR.

Light



> > Light
> > 
> > On Thu, 2020-02-13 at 14:08 +0800, light.hsieh@mediatek.com wrote:
> >> From: Light Hsieh <light.hsieh@mediatek.com>
> >>
> >> Google plan to make platform driver as kernel module for future
> >> Andriod kernel. This patch make platforms that use pinctrl-paris.c
> >> of MediaTek pinctrl v2 ready for building kernel module.
> >>
> >> Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
> >> ---
> >>  drivers/pinctrl/mediatek/mtk-eint.c              |  9 +++++++++
> >>  drivers/pinctrl/mediatek/pinctrl-mt6765.c        |  4 ++++
> >>  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
> >>  drivers/pinctrl/mediatek/pinctrl-paris.c         |  5 +++++
> >>  drivers/pinctrl/pinconf-generic.c                |  1 +
> >>  5 files changed, 43 insertions(+)
> >>
> >> diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
> >> index 7e526bcf..99703a8 100644
> >> --- a/drivers/pinctrl/mediatek/mtk-eint.c
> >> +++ b/drivers/pinctrl/mediatek/mtk-eint.c
> >> @@ -9,6 +9,7 @@
> >>   *
> >>   */
> >>  
> >> +#include <linux/module.h>
> >>  #include <linux/delay.h>
> >>  #include <linux/err.h>
> >>  #include <linux/gpio/driver.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-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> >> index 905dae8c..2c59d39 100644
> >> --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> >> +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
> >> @@ -6,6 +6,7 @@
> >>   *
> >>   */
> >>  
> >> +#include <linux/module.h>
> >>  #include "pinctrl-mtk-mt6765.h"
> >>  #include "pinctrl-paris.h"
> >>  
> >> @@ -1103,3 +1104,6 @@ static int __init mt6765_pinctrl_init(void)
> >>  	return platform_driver_register(&mt6765_pinctrl_driver);
> >>  }
> >>  arch_initcall(mt6765_pinctrl_init);
> >> +
> >> +MODULE_LICENSE("GPL v2");
> >> +MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver");
> >> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> >> index 1da9425..cdf2d69 100644
> >> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> >> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
> >> @@ -6,6 +6,7 @@
> >>   *
> >>   */
> >>  
> >> +#include <linux/module.h>
> >>  #include <dt-bindings/pinctrl/mt65xx.h>
> >>  #include <linux/device.h>
> >>  #include <linux/err.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_gev1);
> >>  
> >>  /* 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..af97794 100644
> >> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
> >> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
> >> @@ -9,6 +9,7 @@
> >>   *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
> >>   */
> >>  
> >> +#include <linux/module.h>
> >>  #include <linux/gpio/driver.h>
> >>  #include <dt-bindings/pinctrl/mt65xx.h>
> >>  #include "pinctrl-paris.h"
> >> @@ -1037,3 +1038,7 @@ 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");
> >> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
> >> index 9eb8630..dfef471 100644
> >> --- a/drivers/pinctrl/pinconf-generic.c
> >> +++ b/drivers/pinctrl/pinconf-generic.c
> >> @@ -286,6 +286,7 @@ int pinconf_generic_parse_dt_config(struct device_node *np,
> >>  	kfree(cfg);
> >>  	return ret;
> >>  }
> >> +EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config);
> >>  
> >>  int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
> >>  		struct device_node *np, struct pinctrl_map **map,
> > 
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
> >
Matthias Brugger Feb. 17, 2020, 10:25 a.m. UTC | #4 
On 14/02/2020 12:02, Light Hsieh wrote:
> On Fri, 2020-02-14 at 11:37 +0100, Matthias Brugger wrote:
>>
>> On 13/02/2020 07:17, Light Hsieh wrote:
>>> Dear Reviewers:
>>>
>>> Google plan to make platform driver as kernel module in future Android
>>> kernel.
>>> This patch series prepare to make platforms that use MediaTek pinctrl
>>> paris driver (pinctrl-paris.c, pinctrl-mtk-common-v2.c, and mtk-eint.c)
>>> compatible for building either kernel module or built-in.
>>>
>>> Please give your comments.
>>>
>>
>> I think I didn't explain myself good enough.
>> These should be three patches:
>>
>> 1. change mtk-eint driver + Kconfig to be loadable as a module
>> 2. change pinctrl-paris + Kconfig to be loadable as a module
>> 3. change mt6765.
>>
>> Please make sure that every patch compiles and does not break the system. This
>> will later help to use git-bisect to hunt down bugs in the kernel.
>>
>> Regards,
>> Matthias
>>
> 
> Actually, I don't understand the necessity of splitting into 2 or 3
> patches.
> 

Basically because smaller logical changes per patch makes it easier to review
and understand what is done and why.

> 1. mtk-eint cannot be built as loadable module when pinctrl-paris and
> pinctrl-mtk-common-v2 is not built as loadable module.
> 
> 2. pinctrl-paris and pinctrl-mtk-common-v2 cannot be built as loadable
> module when pinctrl-mtk6765 is not built as loadable module
> 

Correct, but think about it that you want to backport these patches and add
support for a new SoC, in this case you don't need to add mt6765 support to your
downstream kernel.

Same if you want to be able to built moore as a module in the future. You will
only need to rely on patch 1.
But I won't argue with you, patch 1+2 can be put together if you insist. :)

But I think patch 3 should be independent for sure.

Regards,
Matthias

> 3. besides, if pinctrl-mtk675 and any other MediaTek platform pinctrl
> driver that use mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 are
> built-in, mtk-eint, pinctrl-paris, and pinctrl-mtk-common-v2 cannot be
> built as loadable module.
> 
> The rationale can be learned from the description of change made to
> Kconfig and Makefile.
> 
> So, just applying patch 1 and patch 2 of your proposal does not make
> sense.
> 
> BR.
> 
> Light
> 
> 
> 
>>> Light
>>>
>>> On Thu, 2020-02-13 at 14:08 +0800, light.hsieh@mediatek.com wrote:
>>>> From: Light Hsieh <light.hsieh@mediatek.com>
>>>>
>>>> Google plan to make platform driver as kernel module for future
>>>> Andriod kernel. This patch make platforms that use pinctrl-paris.c
>>>> of MediaTek pinctrl v2 ready for building kernel module.
>>>>
>>>> Signed-off-by: Light Hsieh <light.hsieh@mediatek.com>
>>>> ---
>>>>  drivers/pinctrl/mediatek/mtk-eint.c              |  9 +++++++++
>>>>  drivers/pinctrl/mediatek/pinctrl-mt6765.c        |  4 ++++
>>>>  drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 24 ++++++++++++++++++++++++
>>>>  drivers/pinctrl/mediatek/pinctrl-paris.c         |  5 +++++
>>>>  drivers/pinctrl/pinconf-generic.c                |  1 +
>>>>  5 files changed, 43 insertions(+)
>>>>
>>>> diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
>>>> index 7e526bcf..99703a8 100644
>>>> --- a/drivers/pinctrl/mediatek/mtk-eint.c
>>>> +++ b/drivers/pinctrl/mediatek/mtk-eint.c
>>>> @@ -9,6 +9,7 @@
>>>>   *
>>>>   */
>>>>  
>>>> +#include <linux/module.h>
>>>>  #include <linux/delay.h>
>>>>  #include <linux/err.h>
>>>>  #include <linux/gpio/driver.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-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>>>> index 905dae8c..2c59d39 100644
>>>> --- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>>>> +++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
>>>> @@ -6,6 +6,7 @@
>>>>   *
>>>>   */
>>>>  
>>>> +#include <linux/module.h>
>>>>  #include "pinctrl-mtk-mt6765.h"
>>>>  #include "pinctrl-paris.h"
>>>>  
>>>> @@ -1103,3 +1104,6 @@ static int __init mt6765_pinctrl_init(void)
>>>>  	return platform_driver_register(&mt6765_pinctrl_driver);
>>>>  }
>>>>  arch_initcall(mt6765_pinctrl_init);
>>>> +
>>>> +MODULE_LICENSE("GPL v2");
>>>> +MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver");
>>>> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>>>> index 1da9425..cdf2d69 100644
>>>> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>>>> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
>>>> @@ -6,6 +6,7 @@
>>>>   *
>>>>   */
>>>>  
>>>> +#include <linux/module.h>
>>>>  #include <dt-bindings/pinctrl/mt65xx.h>
>>>>  #include <linux/device.h>
>>>>  #include <linux/err.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_gev1);
>>>>  
>>>>  /* 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..af97794 100644
>>>> --- a/drivers/pinctrl/mediatek/pinctrl-paris.c
>>>> +++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
>>>> @@ -9,6 +9,7 @@
>>>>   *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
>>>>   */
>>>>  
>>>> +#include <linux/module.h>
>>>>  #include <linux/gpio/driver.h>
>>>>  #include <dt-bindings/pinctrl/mt65xx.h>
>>>>  #include "pinctrl-paris.h"
>>>> @@ -1037,3 +1038,7 @@ 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");
>>>> diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
>>>> index 9eb8630..dfef471 100644
>>>> --- a/drivers/pinctrl/pinconf-generic.c
>>>> +++ b/drivers/pinctrl/pinconf-generic.c
>>>> @@ -286,6 +286,7 @@ int pinconf_generic_parse_dt_config(struct device_node *np,
>>>>  	kfree(cfg);
>>>>  	return ret;
>>>>  }
>>>> +EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config);
>>>>  
>>>>  int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
>>>>  		struct device_node *np, struct pinctrl_map **map,
>>>
>>> _______________________________________________
>>> Linux-mediatek mailing list
>>> Linux-mediatek@lists.infradead.org
>>> http://lists.infradead.org/mailman/listinfo/linux-mediatek
>>>
>
diff mbox series

Patch

diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
index 7e526bcf..99703a8 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.c
+++ b/drivers/pinctrl/mediatek/mtk-eint.c
@@ -9,6 +9,7 @@ 
  *
  */
 
+#include <linux/module.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio/driver.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-mt6765.c b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
index 905dae8c..2c59d39 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
@@ -6,6 +6,7 @@ 
  *
  */
 
+#include <linux/module.h>
 #include "pinctrl-mtk-mt6765.h"
 #include "pinctrl-paris.h"
 
@@ -1103,3 +1104,6 @@  static int __init mt6765_pinctrl_init(void)
 	return platform_driver_register(&mt6765_pinctrl_driver);
 }
 arch_initcall(mt6765_pinctrl_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("MediaTek MT6765 Pinctrl Driver");
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index 1da9425..cdf2d69 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -6,6 +6,7 @@ 
  *
  */
 
+#include <linux/module.h>
 #include <dt-bindings/pinctrl/mt65xx.h>
 #include <linux/device.h>
 #include <linux/err.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_gev1);
 
 /* 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..af97794 100644
--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
+++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
@@ -9,6 +9,7 @@ 
  *	   Hongzhou.Yang <hongzhou.yang@mediatek.com>
  */
 
+#include <linux/module.h>
 #include <linux/gpio/driver.h>
 #include <dt-bindings/pinctrl/mt65xx.h>
 #include "pinctrl-paris.h"
@@ -1037,3 +1038,7 @@  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");
diff --git a/drivers/pinctrl/pinconf-generic.c b/drivers/pinctrl/pinconf-generic.c
index 9eb8630..dfef471 100644
--- a/drivers/pinctrl/pinconf-generic.c
+++ b/drivers/pinctrl/pinconf-generic.c
@@ -286,6 +286,7 @@  int pinconf_generic_parse_dt_config(struct device_node *np,
 	kfree(cfg);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pinconf_generic_parse_dt_config);
 
 int pinconf_generic_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 		struct device_node *np, struct pinctrl_map **map,