Merge remote-tracking branch 'origin/ib-extcon-mfd-4.14' into extcon-next

Documentation/devicetree/bindings/extcon/extcon-usbc-cros-ec.txt

+ChromeOS EC USB Type-C cable and accessories detection
+
+On ChromeOS systems with USB Type C ports, the ChromeOS Embedded Controller is
+able to detect the state of external accessories such as display adapters
+or USB devices when said accessories are attached or detached.
+
+The node for this device must be under a cros-ec node like google,cros-ec-spi
+or google,cros-ec-i2c.
+
+Required properties:
+- compatible:		Should be "google,extcon-usbc-cros-ec".
+- google,usb-port-id:	Specifies the USB port ID to use.
+
+Example:
+	cros-ec@0 {
+		compatible = "google,cros-ec-i2c";
+
+		...
+
+		extcon {
+			compatible = "google,extcon-usbc-cros-ec";
+			google,usb-port-id = <0>;
+		};
+	}

drivers/extcon/Kconfig

@@ -150,4 +150,11 @@ config EXTCON_USB_GPIO
 	  Say Y here to enable GPIO based USB cable detection extcon support.
 	  Used typically if GPIO is used for USB ID pin detection.
 
+config EXTCON_USBC_CROS_EC
+	tristate "ChromeOS Embedded Controller EXTCON support"
+	depends on MFD_CROS_EC
+	help
+	  Say Y here to enable USB Type C cable detection extcon support when
+	  using Chrome OS EC based USB Type-C ports.
+
 endif

drivers/extcon/Makefile

@@ -20,3 +20,4 @@ obj-$(CONFIG_EXTCON_QCOM_SPMI_MISC) += extcon-qcom-spmi-misc.o
 obj-$(CONFIG_EXTCON_RT8973A)	+= extcon-rt8973a.o
 obj-$(CONFIG_EXTCON_SM5502)	+= extcon-sm5502.o
 obj-$(CONFIG_EXTCON_USB_GPIO)	+= extcon-usb-gpio.o
+obj-$(CONFIG_EXTCON_USBC_CROS_EC) += extcon-usbc-cros-ec.o

include/linux/mfd/cros_ec_commands.h

@@ -285,6 +285,11 @@ enum host_event_code {
 	EC_HOST_EVENT_HANG_DETECT = 20,
 	/* Hang detect logic detected a hang and warm rebooted the AP */
 	EC_HOST_EVENT_HANG_REBOOT = 21,
+	/* PD MCU triggering host event */
+	EC_HOST_EVENT_PD_MCU = 22,
+
+	/* EC desires to change state of host-controlled USB mux */
+	EC_HOST_EVENT_USB_MUX = 28,
 
 	/*
 	 * The high bit of the event mask is not used as a host event code.  If
@@ -2905,6 +2910,76 @@ struct ec_params_usb_pd_control {
 	uint8_t mux;
 } __packed;
 
+#define PD_CTRL_RESP_ENABLED_COMMS      (1 << 0) /* Communication enabled */
+#define PD_CTRL_RESP_ENABLED_CONNECTED  (1 << 1) /* Device connected */
+#define PD_CTRL_RESP_ENABLED_PD_CAPABLE (1 << 2) /* Partner is PD capable */
+
+struct ec_response_usb_pd_control_v1 {
+	uint8_t enabled;
+	uint8_t role;
+	uint8_t polarity;
+	char state[32];
+} __packed;
+
+#define EC_CMD_USB_PD_PORTS 0x102
+
+struct ec_response_usb_pd_ports {
+	uint8_t num_ports;
+} __packed;
+
+#define EC_CMD_USB_PD_POWER_INFO 0x103
+
+#define PD_POWER_CHARGING_PORT 0xff
+struct ec_params_usb_pd_power_info {
+	uint8_t port;
+} __packed;
+
+enum usb_chg_type {
+	USB_CHG_TYPE_NONE,
+	USB_CHG_TYPE_PD,
+	USB_CHG_TYPE_C,
+	USB_CHG_TYPE_PROPRIETARY,
+	USB_CHG_TYPE_BC12_DCP,
+	USB_CHG_TYPE_BC12_CDP,
+	USB_CHG_TYPE_BC12_SDP,
+	USB_CHG_TYPE_OTHER,
+	USB_CHG_TYPE_VBUS,
+	USB_CHG_TYPE_UNKNOWN,
+};
+
+struct usb_chg_measures {
+	uint16_t voltage_max;
+	uint16_t voltage_now;
+	uint16_t current_max;
+	uint16_t current_lim;
+} __packed;
+
+struct ec_response_usb_pd_power_info {
+	uint8_t role;
+	uint8_t type;
+	uint8_t dualrole;
+	uint8_t reserved1;
+	struct usb_chg_measures meas;
+	uint32_t max_power;
+} __packed;
+
+/* Get info about USB-C SS muxes */
+#define EC_CMD_USB_PD_MUX_INFO 0x11a
+
+struct ec_params_usb_pd_mux_info {
+	uint8_t port; /* USB-C port number */
+} __packed;
+
+/* Flags representing mux state */
+#define USB_PD_MUX_USB_ENABLED       (1 << 0)
+#define USB_PD_MUX_DP_ENABLED        (1 << 1)
+#define USB_PD_MUX_POLARITY_INVERTED (1 << 2)
+#define USB_PD_MUX_HPD_IRQ           (1 << 3)
+
+struct ec_response_usb_pd_mux_info {
+	uint8_t flags; /* USB_PD_MUX_*-encoded USB mux state */
+} __packed;
+
 /*****************************************************************************/
 /*
  * Passthru commands