usb: ch9: Add size macro for SSP dev cap descriptor

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The SuperspeedPlus Device Capability Descriptor has a variable size
depending on the number of sublink speed attributes.

This patch adds a macro to calculate that size. The macro takes one
argument, the Sublink Speed Attribute Count (SSAC) as reported by the
descriptor in bmAttributes[4:0].

See USB 3.1 9.6.2.5, Table 9-19.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

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John Youn 2016-02-05 17:05:12 -08:00 • committed by Felipe Balbi

parent 7b05d3b374

commit 446fa3a95d

1 changed files with 6 additions and 0 deletions

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include/uapi/linux/usb/ch9.h

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