x86: Convert INTEL_ICH6_GPIO to Kconfig

This converts Intel ICH6 GPIO driver to Kconfig, and add it to the
imply list of platform drivers.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/baytrail/Kconfig

@@ -12,6 +12,7 @@ config INTEL_BAYTRAIL
 	imply ENABLE_MRC_CACHE
 	imply ENV_IS_IN_SPI_FLASH
 	imply ICH_SPI
+	imply INTEL_ICH6_GPIO
 	imply MMC
 	imply MMC_PCI
 	imply MMC_SDHCI

arch/x86/cpu/ivybridge/Kconfig

@@ -12,6 +12,7 @@ config NORTHBRIDGE_INTEL_IVYBRIDGE
 	imply ENABLE_MRC_CACHE
 	imply ENV_IS_IN_SPI_FLASH
 	imply ICH_SPI
+	imply INTEL_ICH6_GPIO
 	imply SCSI
 	imply SPI_FLASH
 	imply USB

arch/x86/cpu/quark/Kconfig

@@ -13,6 +13,7 @@ config INTEL_QUARK
 	imply ENV_IS_IN_SPI_FLASH
 	imply ETH_DESIGNWARE
 	imply ICH_SPI
+	imply INTEL_ICH6_GPIO
 	imply MMC
 	imply MMC_PCI
 	imply MMC_SDHCI

arch/x86/cpu/queensbay/Kconfig

@@ -11,6 +11,7 @@ config INTEL_QUEENSBAY
 	select ARCH_EARLY_INIT_R
 	imply ENV_IS_IN_SPI_FLASH
 	imply ICH_SPI
+	imply INTEL_ICH6_GPIO
 	imply MMC
 	imply MMC_PCI
 	imply MMC_SDHCI

drivers/gpio/Kconfig

@@ -67,6 +67,12 @@ config INTEL_BROADWELL_GPIO
 	  driver from the common Intel ICH6 driver. It supports a total of
 	  95 GPIOs which can be configured from the device tree.
 
+config INTEL_ICH6_GPIO
+	bool "Intel ICH6 compatible legacy GPIO driver"
+	depends on DM_GPIO
+	help
+	  Say yes here to select Intel ICH6 compatible legacy GPIO driver.
+
 config IMX_RGPIO2P
 	bool "i.MX7ULP RGPIO2P driver"
 	depends on DM

include/configs/efi-x86.h

@@ -14,7 +14,6 @@
 #undef CONFIG_TPM_TIS_BASE_ADDRESS
 
 #undef CONFIG_SCSI_AHCI
-#undef CONFIG_INTEL_ICH6_GPIO
 #undef CONFIG_USB_EHCI_PCI
 
 #define CONFIG_STD_DEVICES_SETTINGS     "stdin=usbkbd,vga,serial\0" \

include/configs/qemu-x86.h

@@ -44,9 +44,6 @@
 	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_AHCI}
 #endif
 
-/* GPIO is not supported */
-#undef CONFIG_INTEL_ICH6_GPIO
-
 /* SPI is not supported */
 
 #define CONFIG_SPL_FRAMEWORK

include/configs/x86-common.h

@@ -63,9 +63,6 @@
 
 #define CONFIG_SUPPORT_VFAT
 
-/* x86 GPIOs are accessed through a PCI device */
-#define CONFIG_INTEL_ICH6_GPIO
-
 /*-----------------------------------------------------------------------
  * Command line configuration.
  */

scripts/config_whitelist.txt

@@ -1154,7 +1154,6 @@ CONFIG_INI_MAX_LINE
 CONFIG_INI_MAX_NAME
 CONFIG_INI_MAX_SECTION
 CONFIG_INTEGRITY
-CONFIG_INTEL_ICH6_GPIO
 CONFIG_INTERRUPTS
 CONFIG_IO
 CONFIG_IO64