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 <s...@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
+ 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
+ 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
--
2.23.0.444.g18eeb5a265-goog
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