dm: cros_ec: Convert to Kconfig

Since both I2C and SPI are converted to Kconfig, we can convert cros_ec
to Kconfig for these buses.

LPC will need to wait until driver mode PCI is available.

Signed-off-by: Simon Glass <sjg@chromium.org>

configs/peach-pi_defconfig

@@ -3,3 +3,7 @@ CONFIG_SPL=y
 +S:CONFIG_ARCH_EXYNOS=y
 +S:CONFIG_TARGET_PEACH_PI=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos5800-peach-pi"
+CONFIG_CROS_EC=y
+CONFIG_CROS_EC_SPI=y
+CONFIG_CROS_EC_KEYB=y
+CONFIG_CMD_CROS_EC=y

configs/peach-pit_defconfig

@@ -3,3 +3,7 @@ CONFIG_SPL=y
 +S:CONFIG_ARCH_EXYNOS=y
 +S:CONFIG_TARGET_PEACH_PIT=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos5420-peach-pit"
+CONFIG_CROS_EC=y
+CONFIG_CROS_EC_SPI=y
+CONFIG_CROS_EC_KEYB=y
+CONFIG_CMD_CROS_EC=y

configs/sandbox_defconfig

@@ -7,3 +7,8 @@ CONFIG_DM=y
 CONFIG_DEFAULT_DEVICE_TREE="sandbox"
 CONFIG_SYS_MALLOC_F=y
 CONFIG_SYS_MALLOC_F_LEN=0x400
+CONFIG_CROS_EC=y
+CONFIG_DM_CROS_EC=y
+CONFIG_CROS_EC_SANDBOX=y
+CONFIG_CROS_EC_KEYB=y
+CONFIG_CMD_CROS_EC=y

configs/snow_defconfig

@@ -3,3 +3,8 @@ CONFIG_SPL=y
 +S:CONFIG_ARCH_EXYNOS=y
 +S:CONFIG_TARGET_SNOW=y
 CONFIG_DEFAULT_DEVICE_TREE="exynos5250-snow"
+CONFIG_CROS_EC=y
+CONFIG_DM_CROS_EC=y
+CONFIG_CROS_EC_I2C=y
+CONFIG_CROS_EC_KEYB=y
+CONFIG_CMD_CROS_EC=y

drivers/input/Kconfig

@@ -0,0 +1,6 @@
+config CROS_EC_KEYB
+	bool "Enable Chrome OS EC keyboard support"
+	help
+	  Most ARM Chromebooks use an EC to provide access to the keyboard.
+	  Messages are used to request key scans from the EC and these are
+	  then decoded into keys by this driver.

drivers/misc/Kconfig

@@ -1,3 +1,49 @@
+config CMD_CROS_EC
+	bool "Enable crosec command"
+	depends on CROS_EC
+	help
+	  Enable command-line access to the Chrome OS EC (Embedded
+	  Controller). This provides the 'crosec' command which has
+	  a number of sub-commands for performing EC tasks such as
+	  updating its flash, accessing a small saved context area
+	  and talking to the I2C bus behind the EC (if there is one).
+
+config CROS_EC
+	bool "Enable Chrome OS EC"
+	help
+	  Enable access to the Chrome OS EC. This is a separate
+	  microcontroller typically available on a SPI bus on Chromebooks. It
+	  provides access to the keyboard, some internal storage and may
+	  control access to the battery and main PMIC depending on the
+	  device. You can use the 'crosec' command to access it.
+
+config CROS_EC_I2C
+	bool "Enable Chrome OS EC I2C driver"
+	depends on CROS_EC
+	help
+	  Enable I2C access to the Chrome OS EC. This is used on older
+	  ARM Chromebooks such as snow and spring before the standard bus
+	  changed to SPI. The EC will accept commands across the I2C using
+	  a special message protocol, and provide responses.
+
+config CROS_EC_LPC
+	bool "Enable Chrome OS EC LPC driver"
+	depends on CROS_EC
+	help
+	  Enable I2C access to the Chrome OS EC. This is used on x86
+	  Chromebooks such as link and falco. The keyboard is provided
+	  through a legacy port interface, so on x86 machines the main
+	  function of the EC is power and thermal management.
+
+config CROS_EC_SPI
+	bool "Enable Chrome OS EC SPI driver"
+	depends on CROS_EC
+	help
+	  Enable SPI access to the Chrome OS EC. This is used on newer
+	  ARM Chromebooks such as pit, pi and nyan-big. The SPI interface
+	  provides a faster and more robust interface than I2C but the bugs
+	  are less interesting.
+
 config DM_CROS_EC
 	bool "Enable Driver Model for Chrome OS EC"
 	depends on DM
@@ -5,5 +51,5 @@ config DM_CROS_EC
 	  Enable driver model for the Chrome OS EC interface. This
 	  allows the cros_ec SPI driver to operate with CONFIG_DM_SPI
 	  but otherwise makes few changes. Since cros_ec also supports
-	  I2C and LPC (which don't support driver model yet), a full
+	  LPC (which doesn't support driver model yet), a full
 	  conversion is not yet possible.

include/configs/exynos5-dt-common.h

@@ -24,9 +24,6 @@
 #define CONFIG_POWER_TPS65090
 
 /* Enable keyboard */
-#define CONFIG_CROS_EC		/* CROS_EC protocol */
-#define CONFIG_CROS_EC_KEYB	/* CROS_EC keyboard input */
-#define CONFIG_CMD_CROS_EC
 #define CONFIG_KEYBOARD
 
 #endif

include/configs/peach-pi.h

@@ -43,7 +43,6 @@
 #endif
 
 #define CONFIG_POWER_TPS65090_EC
-#define CONFIG_CROS_EC_SPI		/* Support CROS_EC over SPI */
 
 #define CONFIG_USB_XHCI
 #define CONFIG_USB_XHCI_EXYNOS

include/configs/peach-pit.h

@@ -43,7 +43,6 @@
 #endif
 
 #define CONFIG_POWER_TPS65090_EC
-#define CONFIG_CROS_EC_SPI		/* Support CROS_EC over SPI */
 
 #define CONFIG_USB_XHCI
 #define CONFIG_USB_XHCI_EXYNOS

include/configs/sandbox.h

@@ -141,9 +141,6 @@
 
 #define CONFIG_BOOTARGS ""
 
-#define CONFIG_CROS_EC
-#define CONFIG_CMD_CROS_EC
-#define CONFIG_CROS_EC_SANDBOX
 #define CONFIG_ARCH_EARLY_INIT_R
 #define CONFIG_BOARD_LATE_INIT
 
@@ -166,7 +163,6 @@
 #define LCD_BPP			LCD_COLOR16
 #define CONFIG_LCD_BMP_RLE8
 
-#define CONFIG_CROS_EC_KEYB
 #define CONFIG_KEYBOARD
 
 #define CONFIG_EXTRA_ENV_SETTINGS	"stdin=serial,cros-ec-keyb\0" \

include/configs/snow.h

@@ -20,9 +20,7 @@
 #include <configs/exynos5-dt-common.h>
 
 
-#define CONFIG_CROS_EC_I2C		/* Support CROS_EC over I2C */
 #define CONFIG_POWER_TPS65090_I2C
-#define CONFIG_DM_CROS_EC
 
 #define CONFIG_BOARD_COMMON
 #define CONFIG_ARCH_EARLY_INIT_R