[U-Boot] [PATCH 16/60] ARM: tegra: migrate TEGRA_GPIO to Kconfig

[Stephen Warren]

From: Stephen Warren <swarren at nvidia.com>

All configuration is migrating to Kconfig. This moves one piece.

TEGRA_GPIO is default y since it's almost certain to be needed, and this
setting matches the stanza removed from the config header file.

CONFIG_HAS_TEGRA_GPIO is introduced so that drivers/gpio/Kconfig doesn't
have to know which Tegra chips contain this GPIO controller, thus
isolating such knowledge into mach-tegra/Kconfig. All currently supported
chips do, but the next chip contains a different GPIO controller and hence
requires a different driver.

Signed-off-by: Stephen Warren <swarren at nvidia.com>
---
 arch/arm/mach-tegra/Kconfig    | 5 +++++
 drivers/gpio/Kconfig           | 8 ++++++++
 include/configs/tegra-common.h | 1 -
 3 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index ba6983f3dfd3..32ea2f944fa9 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -1,5 +1,8 @@
 if TEGRA
 
+config HAS_TEGRA_GPIO
+	bool "SoC contains Tegra20..210 GPIO controller"
+
 config TEGRA_COMMON
 	bool "Tegra common options"
 	select DM
@@ -19,6 +22,7 @@ config TEGRA_COMMON
 config TEGRA_ARMV7_COMMON
 	bool "Tegra 32-bit common options"
 	select CPU_V7
+	select HAS_TEGRA_GPIO
 	select SPL
 	select SUPPORT_SPL
 	select TEGRA_COMMON
@@ -50,6 +54,7 @@ config TEGRA124
 
 config TEGRA210
 	bool "Tegra210 family"
+	select HAS_TEGRA_GPIO
 	select TEGRA_ARMV8_COMMON
 
 endchoice
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index f56a60621ff0..85700922a2da 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -109,6 +109,14 @@ 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 && HAS_TEGRA_GPIO
+	default y
+	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 776394151661..b6506e2fb3df 100644
--- a/include/configs/tegra-common.h
+++ b/include/configs/tegra-common.h
@@ -109,7 +109,6 @@
 						CONFIG_SYS_INIT_RAM_SIZE - \
 						GENERATED_GBL_DATA_SIZE)
 
-#define CONFIG_TEGRA_GPIO
 #define CONFIG_CMD_ENTERRCM
 
 /* Defines for SPL */
-- 
2.8.1