[U-Boot] [PATCH v2 03/38] dm: gpio: Allow control of GPIO uclass in SPL

[Bin Meng]

On Wed, Oct 2, 2019 at 9:56 PM Bin Meng <bmeng.cn at gmail.com> wrote:
>
> On Wed, Sep 25, 2019 at 10:12 PM Simon Glass <sjg at chromium.org> wrote:
> >
> > At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass
> > is included in SPL/TPL without any control for boards. Some boards may
> > want to disable this to reduce code size where GPIOs are not needed in
> > SPL or TPL.
> >
> > Add a new Kconfig option to permit this. Default it to 'y' so that
> > existing boards work correctly. This allows us to remove the hack in
> > config_uncmd_spl.h (eventually that file should be removed).
> >
> > Signed-off-by: Simon Glass <sjg at chromium.org>
> > ---
> >
> > Changes in v2:
> > - Fix the Kconfig condition to avoid build errors on snow
> >
> >  drivers/gpio/Kconfig       | 22 ++++++++++++++++++++++
> >  drivers/gpio/Makefile      |  2 +-
> >  include/config_uncmd_spl.h |  1 -
> >  3 files changed, 23 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
> > index f2dabb554fa..11a242d7aa8 100644
> > --- a/drivers/gpio/Kconfig
> > +++ b/drivers/gpio/Kconfig
> > @@ -14,6 +14,28 @@ config DM_GPIO
> >           particular GPIOs that they provide. The uclass interface
> >           is defined in include/asm-generic/gpio.h.
> >
> > +config SPL_DM_GPIO
> > +       bool "Enable Driver Model for GPIO drivers in SPL"
> > +       depends on DM_GPIO && SPL_DM && SPL_GPIO_SUPPORT
> > +       default y
> > +       help
> > +         Enable driver model for GPIO access. The standard GPIO
>
> nits: Enable driver model for GPIO access in SPL.
>
> > +         interface (gpio_get_value(), etc.) is then implemented by
> > +         the GPIO uclass. Drivers provide methods to query the
> > +         particular GPIOs that they provide. The uclass interface
> > +         is defined in include/asm-generic/gpio.h.
> > +
> > +config TPL_DM_GPIO
> > +       bool "Enable Driver Model for GPIO drivers in TPL"
> > +       depends on DM_GPIO && TPL_DM && TPL_GPIO_SUPPORT
> > +       default y
> > +       help
> > +         Enable driver model for GPIO access. The standard GPIO
>
> nits: Enable driver model for GPIO access in TPL.
>
> > +         interface (gpio_get_value(), etc.) is then implemented by
> > +         the GPIO uclass. Drivers provide methods to query the
> > +         particular GPIOs that they provide. The uclass interface
> > +         is defined in include/asm-generic/gpio.h.
> > +
> >  config GPIO_HOG
> >         bool "Enable GPIO hog support"
> >         depends on DM_GPIO
> > diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
> > index 4a8aa0ff6fe..56e9374e308 100644
> > --- a/drivers/gpio/Makefile
> > +++ b/drivers/gpio/Makefile
> > @@ -7,7 +7,7 @@ ifndef CONFIG_SPL_BUILD
> >  obj-$(CONFIG_DWAPB_GPIO)       += dwapb_gpio.o
> >  obj-$(CONFIG_AXP_GPIO)         += axp_gpio.o
> >  endif
> > -obj-$(CONFIG_DM_GPIO)          += gpio-uclass.o
> > +obj-$(CONFIG_$(SPL_TPL_)DM_GPIO) += gpio-uclass.o
> >
> >  obj-$(CONFIG_$(SPL_)DM_PCA953X)        += pca953x_gpio.o
> >  obj-$(CONFIG_DM_74X164)                += 74x164_gpio.o
> > diff --git a/include/config_uncmd_spl.h b/include/config_uncmd_spl.h
> > index c2f9735ce79..31da6215b3a 100644
> > --- a/include/config_uncmd_spl.h
> > +++ b/include/config_uncmd_spl.h
> > @@ -12,7 +12,6 @@
> >
> >  #ifndef CONFIG_SPL_DM
> >  #undef CONFIG_DM_SERIAL
> > -#undef CONFIG_DM_GPIO
> >  #undef CONFIG_DM_I2C
> >  #undef CONFIG_DM_SPI
> >  #endif
> > --
>
> Other than that,
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Fixed the nits, and
applied to u-boot-x86/next, thanks!