[U-Boot] [PATCH 3/4] ARM: tegra: convert CONFIG_TEGRA_GPIO to Kconfig

[Stephen Warren]

From: Stephen Warren <swarren at nvidia.com>

Future chips will contain different GPIO HW. This change will enable
future SoC support to select the appropriate GPIO driver for their HW,
in a future-looking fashion, using Kconfig.

TEGRA_GPIO is not simply selected by TEGRA_COMMON (even though all
current Tegra chips used this GPIO HW) to simplify the later addition
of support for Tegra SoCs that use different GPIO HW.

Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
v2: New patch.
---
 arch/arm/mach-tegra/Kconfig    | 2 ++
 drivers/gpio/Kconfig           | 7 +++++++
 include/configs/tegra-common.h | 1 -
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index ba6983f3dfd3..616a1c3cf345 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -22,6 +22,7 @@ config TEGRA_ARMV7_COMMON
 	select SPL
 	select SUPPORT_SPL
 	select TEGRA_COMMON
+	select TEGRA_GPIO
 
 config TEGRA_ARMV8_COMMON
 	bool "Tegra 64-bit common options"
@@ -50,6 +51,7 @@ config TEGRA124
 
 config TEGRA210
 	bool "Tegra210 family"
+	select TEGRA_GPIO
 	select TEGRA_ARMV8_COMMON
 
 endchoice
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 2b4624d7f807..b3e086fa3584 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -109,6 +109,13 @@ config SANDBOX_GPIO_COUNT
 	  of 'anonymous' GPIOs that do not belong to any device or bank.
 	  Select a suitable value depending on your needs.
 
+config TEGRA_GPIO
+	bool "Tegra20..210 GPIO driver"
+	depends on DM_GPIO
+	help
+	  Support for the GPIO controller contained in NVIDIA Tegra20 through
+	  Tegra210.
+
 config GPIO_UNIPHIER
 	bool "UniPhier GPIO"
 	depends on ARCH_UNIPHIER
diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h
index 92d4dd8e5196..7b0940a7f20c 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -111,7 +111,6 @@
 						CONFIG_SYS_INIT_RAM_SIZE - \
 						GENERATED_GBL_DATA_SIZE)
 
-#define CONFIG_TEGRA_GPIO
 #define CONFIG_CMD_ENTERRCM
 
 /* Defines for SPL */
-- 
2.8.2