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authorThinh Nguyen <Thinh.Nguyen@synopsys.com>2021-01-14 05:52:46 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-01-18 20:38:47 +0300
commitf2fc9ff28d1c9bef7760516feadd38164044caae (patch)
tree054444048354e69ce6b1f06d322f62d8d0ba3e42 /include/uapi/linux/usb
parent7766cafea0eca6a7cc0ffc947bc95be19295575f (diff)
downloadlinux-f2fc9ff28d1c9bef7760516feadd38164044caae.tar.xz
usb: ch9: Add USB 3.2 SSP attributes
In preparation for USB 3.2 dual-lane support, add sublink speed attribute macros and enum usb_ssp_rate. A USB device that operates in SuperSpeed Plus may operate at different speed and lane count. These additional macros and enum values help specifying that. Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Link: https://lore.kernel.org/r/ae9293ebd63a29f2a2035054753534d9eb123d74.1610592135.git.Thinh.Nguyen@synopsys.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/usb')
-rw-r--r--include/uapi/linux/usb/ch9.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index 0f865ae4ba89..17ce56198c9a 100644
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -968,9 +968,22 @@ struct usb_ssp_cap_descriptor {
__le32 bmSublinkSpeedAttr[1]; /* list of sublink speed attrib entries */
#define USB_SSP_SUBLINK_SPEED_SSID (0xf) /* sublink speed ID */
#define USB_SSP_SUBLINK_SPEED_LSE (0x3 << 4) /* Lanespeed exponent */
+#define USB_SSP_SUBLINK_SPEED_LSE_BPS 0
+#define USB_SSP_SUBLINK_SPEED_LSE_KBPS 1
+#define USB_SSP_SUBLINK_SPEED_LSE_MBPS 2
+#define USB_SSP_SUBLINK_SPEED_LSE_GBPS 3
+
#define USB_SSP_SUBLINK_SPEED_ST (0x3 << 6) /* Sublink type */
+#define USB_SSP_SUBLINK_SPEED_ST_SYM_RX 0
+#define USB_SSP_SUBLINK_SPEED_ST_ASYM_RX 1
+#define USB_SSP_SUBLINK_SPEED_ST_SYM_TX 2
+#define USB_SSP_SUBLINK_SPEED_ST_ASYM_TX 3
+
#define USB_SSP_SUBLINK_SPEED_RSVD (0x3f << 8) /* Reserved */
#define USB_SSP_SUBLINK_SPEED_LP (0x3 << 14) /* Link protocol */
+#define USB_SSP_SUBLINK_SPEED_LP_SS 0
+#define USB_SSP_SUBLINK_SPEED_LP_SSP 1
+
#define USB_SSP_SUBLINK_SPEED_LSM (0xff << 16) /* Lanespeed mantissa */
} __attribute__((packed));