Re: [RFC Patch 1/3] USB: add descriptors from USB Power Delivery spec

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Hello.

On 3/10/2016 1:32 PM, Oliver Neukum wrote:

Adding the descriptors of chapter 9.2 of the Power Delivery spec.

Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
---
  include/uapi/linux/usb/ch9.h | 94 ++++++++++++++++++++++++++++++++++++++++++++
  1 file changed, 94 insertions(+)

diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index 252ac16..c9f2bc2 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -913,6 +913,100 @@ struct usb_ssp_cap_descriptor {
  } __attribute__((packed));

  /*
+ * USB Power Delivery Capability Descriptor:
+ * Defines capabilities for PD
+ */
+#define USB_PD_POWER_DELIVERY_CAPABILITY	(0x06)	/* Defines the various PD Capabilities of this device */
+#define USB_PD_BATTERY_INFO_CAPABILITY		(0x07)	/* Provides information on each battery supported by the device */
+#define USB_PD_PD_CONSUMER_PORT_CAPABILITY	(0x08)	/* The Consumer characteristics of a Port on the device */
+#define USB_PD_PD_PROVIDER_PORT_CAPABILITY	(0x09)	/* The provider characteristics of a Port on the device */

   Parens not needed.

+
+struct usb_pd_cap_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+	__u8  bDevCapabilityType; /* set to USB_PD_POWER_DELIVERY_CAPABILITY */
+	__u8  bReserved;
+	__le32 bmAttributes;
+#define uSB_PD_CAP_BATTERY_CHARGING	( 1 << 1 ) /* supports Battery Charging specification */
+#define uSB_PD_CAP_USB_PD		( 1 << 2 ) /* supports USB Power Delivery specification */
+#define uSB_PD_CAP_PROVIDER		( 1 << 3 ) /* can provide power */
+#define uSB_PD_CAP_CONSUMER		( 1 << 4 ) /* can consume power */
+#define uSB_PD_CAP_CHARGING_POLICY	( 1 << 5 ) /* supports CHARGING_POLICY feature */
+#define uSB_PD_CAP_TYPE_C_CURRENT	( 1 << 6 ) /* supports power capabilities defined in the USB Type-C Specification */
+
+#define uSB_PD_CAP_PWR_AC		( 1 << 8 )
+#define uSB_PD_CAP_PWR_BAT		( 1 << 9 )
+#define uSB_PD_CAP_PWR_USE_V_BUS	( 1 << 14 )

   Remove spaces after ( and before ) please.

[...]
+struct usb_pd_cap_consumer_port_descriptor {
+	__u8 bLength;
+	__u8 bDescriptorType;
+	__u8 bDevCapabilityType;
+	__u8 bReserved;
+	__u8 bmCapabilities;
+/* port will oerate under: */
+#define uSB_PD_CAP_CONSUMER_BC		( 1 << 0 ) /* BC */
+#define uSB_PD_CAP_CONSUMER_PD		( 1 << 1 ) /* PD */
+#define uSB_PD_CAP_CONSUMER_TYPE_C	( 1 << 2 ) /* USB Type-C Current */

   Likewise.

+	__le16 wMinVoltage; /* in 50mV units */
+	__le16 wMaxVoltage; /* in 50mV units */
+	__u16 wReserved;
+	__le32 dwMaxOperatingPower; /* in 10 mW - operating at steady state */
+	__le32 dwMaxPeakPower; /* in 10mW units - operating at peak power */
+	__le32 dwMaxPeakPowerTime; /* in 100ms units - duration of peak */
+#define uSB_PD_CAP_CONSUMER_UNKNOWN_PEAK_POWER_TIME 0xffff
+} __attribute__((packed));
+
+struct usb_pd_cap_provider_port_descriptor {
+	__u8 bLength;
+	__u8 bDescriptorType;
+	__u8 bDevCapabilityType;
+	__u8 bReserved1;
+	__u8 bmCapabilities;
+/* port will oerate under: */
+#define uSB_PD_CAP_PROVIDER_BC		( 1 << 0 ) /* BC */
+#define uSB_PD_CAP_PROVIDER_PD		( 1 << 1 ) /* PD */
+#define uSB_PD_CAP_PROVIDER_TYPE_C	( 1 << 2 ) /* USB Type-C Current */

   Likewise.

[...]

MBR, Sergei

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