mbox series

[RFC,0/8] usb: Check for genXxY on host

Message ID cover.1612237179.git.Thinh.Nguyen@synopsys.com
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Series usb: Check for genXxY on host | expand

Message

Thinh Nguyen Feb. 2, 2021, 3:42 a.m. UTC 
This series add some missing support for USB 3.2 SuperSpeed Plus detection on
the host side. A SuperSpeed Plus device can operate in gen2x2, gen2x1, or
gen1x2. The current implementation can't detect whether the device is in Gen 1
or Gen 2 speed. We can do this by matching for the lane speed exponent and
mantissa of the SSP sublink speed capability descriptor from the hub driver.

Also, the current xHCI driver is missing some reports for the default SSP
Sublink Speed capability for USB 3.2 roothub. This series also add some support
for xHCI driver detecting various SuperSpeed Plus GenXxY.


Thinh Nguyen (8):
  usb: core: Track SuperSpeed Plus GenXxY
  usb: core: hub: Remove port_speed_is_ssp()
  usb: core: hub: Print speed name based on ssp rate
  usb: core: sysfs: Check for SSP rate in speed attr
  usb: xhci: Init root hub SSP rate
  usb: xhci: Fix port minor revision
  usb: xhci: Rewrite xhci_create_usb3_bos_desc()
  usb: xhci: Remove unused function

 drivers/usb/core/hcd.c      |   6 +-
 drivers/usb/core/hub.c      |  97 +++++++---
 drivers/usb/core/sysfs.c    |   5 +-
 drivers/usb/host/xhci-hub.c | 368 ++++++++++++++++++++++++------------
 drivers/usb/host/xhci-mem.c |   9 +
 drivers/usb/host/xhci.c     |   2 +
 include/linux/usb.h         |   2 +
 7 files changed, 345 insertions(+), 144 deletions(-)


base-commit: 29b01295a829fba7399ee84afff4e64660e49f04