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[09/15] usb: pd: Add definition for DFP and UFP1 VDOs

Message ID 20191230142611.24921-10-heikki.krogerus@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series USB Type-C changes | expand

Commit Message

Heikki Krogerus Dec. 30, 2019, 2:26 p.m. UTC 
The latest version of the USB Power Delivery Specification
R3.0 added UFP and DFP product types for the Discover
Identity message. Both types can be used for example for
checking the USB capability of the partner, which means the
USB modes (USB 2.0, USB 3.0 and USB4) that the partner
device supports.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
---
 include/linux/usb/pd_vdo.h | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
diff mbox series

Patch

diff --git a/include/linux/usb/pd_vdo.h b/include/linux/usb/pd_vdo.h
index 781f4e98dd23..35b8e15efaa0 100644
--- a/include/linux/usb/pd_vdo.h
+++ b/include/linux/usb/pd_vdo.h
@@ -139,6 +139,38 @@ 
 #define VDO_PRODUCT(pid, bcd)	(((pid) & 0xffff) << 16 | ((bcd) & 0xffff))
 #define PD_PRODUCT_PID(vdo)	(((vdo) >> 16) & 0xffff)
 
+/*
+ * UFP VDO1
+ * --------
+ * <31:29> :: UFP VDO version
+ * <28>    :: Reserved
+ * <27:24> :: Device capability
+ * <23:6>  :: Reserved
+ * <5:3>   :: Alternate modes
+ * <2:0>   :: USB highest speed
+ */
+#define PD_VDO1_UFP_DEVCAP(vdo)	(((vdo) & GENMASK(27, 24)) >> 24)
+
+#define DEV_USB2_CAPABLE	BIT(0)
+#define DEV_USB2_BILLBOARD	BIT(1)
+#define DEV_USB3_CAPABLE	BIT(2)
+#define DEV_USB4_CAPABLE	BIT(3)
+
+/*
+ * DFP VDO
+ * --------
+ * <31:29> :: DFP VDO version
+ * <28:27> :: Reserved
+ * <26:24> :: Host capability
+ * <23:5>  :: Reserved
+ * <4:0>   :: Port number
+ */
+#define PD_VDO_DFP_HOSTCAP(vdo)	(((vdo) & GENMASK(26, 24)) >> 24)
+
+#define HOST_USB2_CAPABLE	BIT(0)
+#define HOST_USB3_CAPABLE	BIT(1)
+#define HOST_USB4_CAPABLE	BIT(2)
+
 /*
  * Cable VDO
  * ---------