dm: gpio: Allow control of GPIO uclass in SPL
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.
Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to
preserve the current behaviour. Also update the 74x164 GPIO driver since
it cannot build with SPL.
This allows us to remove the hacks in config_uncmd_spl.h and
Makefile.uncmd_spl (eventually those files should be removed).
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index ccc49e2..3612e66 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -7,10 +7,12 @@
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_$(SPL_)DM_PCA953X) += pca953x_gpio.o
+ifdef CONFIG_$(SPL_TPL_)GPIO
obj-$(CONFIG_DM_74X164) += 74x164_gpio.o
+endif
obj-$(CONFIG_AT91_GPIO) += at91_gpio.o
obj-$(CONFIG_ATMEL_PIO4) += atmel_pio4.o