[PATCH 0/3][SRU][F/G/H/U/OEM-5.6] Fix i2c report error on elan trackpoint

[Stefan Bader]

On 16.12.20 06:12, Aaron Ma wrote:
> BugLink: https://bugs.launchpad.net/bugs/1908335
> 
> [Impact]
> New elan trackpoint on elan_i2c reports the following error:
> "failed to read report data: -71"
> it failed to work.
> 
> [Fix]
> Add new report type support and fix protocol errors for some trackpoints
> in SMBus mode.
> 
> [Test Case]
> Touchpad and trackpoint work well.
> 
> [Where problems could occur]
> elan touchpad and trackpoint may not work.
> 
> Jingle Wu (2):
>   Input: elan_i2c - add support for high resolution reports
>   UBUNTU: SAUCE: Input: elan_i2c - add new trackpoint report type 0x5F
> 
> jingle.wu (1):
>   UBUNTU: SAUCE: Input: elantech - fix protocol errors for some
>     trackpoints in SMBus mode
> 
>  drivers/input/mouse/elan_i2c.h       |  24 ++++-
>  drivers/input/mouse/elan_i2c_core.c  | 133 ++++++++++++++++-----------
>  drivers/input/mouse/elan_i2c_i2c.c   |  34 +++++--
>  drivers/input/mouse/elan_i2c_smbus.c |  25 ++++-
>  drivers/input/mouse/elantech.c       |  99 +++++++++++++++++++-
>  drivers/input/mouse/elantech.h       |   4 +
>  6 files changed, 247 insertions(+), 72 deletions(-)
> 

This modifies the general elan driver. Was any cross-testing whatsoever done to
ensure this does not regress existing hardware?

-Stefan

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