Re: [PATCH v5 0/2] Apple Magic Keyboard Backlight

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On Fri, 10 Mar 2023 15:36:34 +0100 (CET)
Jiri Kosina <jikos@xxxxxxxxxx> wrote:

> On Mon, 20 Feb 2023, Orlando Chamberlain wrote:
> 
> > This patchseries adds support for the internal keyboard backlight of
> > Macs with Apple's "Magic" keyboard (MacBookPro16,* and
> > MacBookAir9,1), and also documents what names should be used for
> > keyboard backlight leds in Documentation/leds/well-known-leds.txt.
> > 
> > v4->v5:
> > - use <tab><space><space> for help in Kconfig
> > - prepend "hid-" to filename in MAINTAINERS
> > 
> > v3->v4:
> > - collect reviews from Andy and Thomas
> > - remove now unused hdev member of apple_magic_backlight
> > 
> > v2->v3:
> > - remove unneeded header inclusion
> > - use s32 for report value type
> > - remove unneeded null check
> > - don't set drvdata as its never used
> > - prepend "hid-" to module name
> > 
> > v1->v2:
> > - drop unneeded remove function
> > - combine set functions
> > - add missing header inclusions
> > - avoid char as argument in favour of u8
> > - handful of style/formatting fixes
> > - use standard led name ":white:kbd_backlight"
> > - rename USAGE_MAGIC_BL to HID_USAGE_MAGIC_BL
> > - New patch documenting preferred keyboard backlight names
> > 
> > v1:
> > https://lore.kernel.org/linux-input/7D70F1FE-7F54-4D0A-8922-5466AA2AD364@xxxxxxxx/
> > v2:
> > https://lore.kernel.org/linux-input/20230216041224.4731-1-orlandoch.dev@xxxxxxxxx/
> > v3:
> > https://lore.kernel.org/linux-input/20230217102319.3419-1-orlandoch.dev@xxxxxxxxx/
> > v4:
> > https://lore.kernel.org/linux-input/20230218090709.7467-1-orlandoch.dev@xxxxxxxxx/
> > 
> > Orlando Chamberlain (2):
> >   Documentation: leds: standardise keyboard backlight led names
> >   HID: hid-apple-magic-backlight: Add driver for keyboard backlight
> > on internal Magic Keyboards
> > 
> >  Documentation/leds/well-known-leds.txt  |   8 ++
> >  MAINTAINERS                             |   6 ++
> >  drivers/hid/Kconfig                     |  13 +++
> >  drivers/hid/Makefile                    |   1 +
> >  drivers/hid/hid-apple-magic-backlight.c | 120
> > ++++++++++++++++++++++++ 5 files changed, 148 insertions(+)
> >  create mode 100644 drivers/hid/hid-apple-magic-backlight.c  
> 
> Hi,
> 
> thanks for creating the support for backlight.
> 
> Is there any reason why not to fold all this into existing hid-apple?
> I don't think we need separate driver for the backlist, separated
> from the rest of hid-apple support.

Hi Jiri,

I think we can do that if we modify hid-apple to support usb endpoints
with only the keyboard backlight and no keyboard, assuming it doesn't
prevent the (not upstream) touchbar driver from using the touchbar
backlight interface (and I don't think it will, given hid-apple lets a
different driver bind to the trackpad interface of the
keyboard/trackpad usb device).

> 
> Thanks,
> 




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