[2/5] pinctrl: rockchip: make driver be tristate module

Make pinctrl-rockchip driver to be tristate module, support to build as
a module, this is useful for GKI.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
---
 drivers/pinctrl/Kconfig            |  2 +-
 drivers/pinctrl/pinctrl-rockchip.c | 18 ++++++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

Hi Jianqun,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on rockchip/for-next]
[also build test ERROR on pinctrl/devel v5.9-rc4 next-20200903]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Jianqun-Xu/rockchip-pinctrl-fixes-for-GKI/20200907-114025
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git for-next
config: riscv-allmodconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "irq_gc_set_wake" [drivers/pinctrl/pinctrl-rockchip.ko] undefined!

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Hi,

Am Montag, 7. September 2020, 04:59:24 CEST schrieb Jianqun Xu:
> Make pinctrl-rockchip driver to be tristate module, support to build as
> a module, this is useful for GKI.
> 
> Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
> ---
>  drivers/pinctrl/Kconfig            |  2 +-
>  drivers/pinctrl/pinctrl-rockchip.c | 18 ++++++++++++++++++
>  2 files changed, 19 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
> index 4284f39a5c61..743eb2bb8709 100644
> --- a/drivers/pinctrl/Kconfig
> +++ b/drivers/pinctrl/Kconfig
> @@ -207,7 +207,7 @@ config PINCTRL_OXNAS
>  	select MFD_SYSCON
>  
>  config PINCTRL_ROCKCHIP
> -	bool
> +	tristate "Rockchip gpio and pinctrl driver"
>  	depends on OF
>  	select PINMUX
>  	select GENERIC_PINCONF
> diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
> index 0401c1da79dd..cc7512acfc5f 100644
> --- a/drivers/pinctrl/pinctrl-rockchip.c
> +++ b/drivers/pinctrl/pinctrl-rockchip.c
> @@ -16,10 +16,12 @@
>   */
>  
>  #include <linux/init.h>
> +#include <linux/module.h>
>  #include <linux/platform_device.h>
>  #include <linux/io.h>
>  #include <linux/bitops.h>
>  #include <linux/gpio/driver.h>
> +#include <linux/of_device.h>

of_device.h below of_address.h please


>  #include <linux/of_address.h>
>  #include <linux/of_irq.h>
>  #include <linux/pinctrl/machine.h>
> @@ -4257,4 +4259,20 @@ static int __init rockchip_pinctrl_drv_register(void)
>  {
>  	return platform_driver_register(&rockchip_pinctrl_driver);
>  }
> +
> +static void __exit rockchip_pinctrl_drv_unregister(void)
> +{
> +	platform_driver_unregister(&rockchip_pinctrl_driver);
> +}
> +
> +#ifdef CONFIG_PINCTRL_ROCKCHIP_MODULE
> +module_init(rockchip_pinctrl_drv_register);
> +#else
>  postcore_initcall(rockchip_pinctrl_drv_register);
> +#endif

You definitly don't need this hack. For modules postcore_initcall
already points to module_init ... see

https://elixir.bootlin.com/linux/latest/source/include/linux/module.h#L114


Heiko