[SRU] [E/F/OEM-OSP1-B] [PATCH 0/1] Reduce s2idle power consumption when ethernet cable is connected on e1000e

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1859126

[Impact]
When ethernet cable is connected, power consumption is quite high under
suspend-to-idle.

[Fix]
Enable s0ix support for e1000e.

[Test]
When ethernet cable is connected, the power consumption is ~2.5w.
After applying the patch, it can be lowered to ~1.8w.

[Regression Potential]
Low. This fix is limited to fairly recent I219 hardwares.

Sasha Neftin (1):
  e1000e: Add support for S0ix

 drivers/net/ethernet/intel/e1000e/netdev.c | 182 +++++++++++++++++++++
 drivers/net/ethernet/intel/e1000e/regs.h   |   4 +
 2 files changed, 186 insertions(+)

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2.17.1