Messages in this thread | | | From | Andy Shevchenko <> | Date | Mon, 26 Feb 2024 04:23:15 +0200 | Subject | Re: [PATCH 0/3] auxdisplay: 7 segment LED display |
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On Sun, Feb 25, 2024 at 11:34 PM Chris Packham <chris.packham@alliedtelesis.co.nz> wrote: > > This series adds a driver for a 7 segment LED display. > > I'd like to get some feedback on how this could be extended to support >1 > character. The driver as presented is sufficient for my hardware which only has > a single character display but I can see that for this to be generically useful > supporting more characters would be desireable. > > Earlier I posted an idea that the characters could be represended by > sub-nodes[1] but there doesn't seem to be a way of having that and keeping the > convenience of using devm_gpiod_get_array() (unless I've missed something).
It seems you didn't know that the tree for auxdisplay has been changed. Can you rebase your stuff on top of https://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay.git/log/?h=for-next? It will reduce your code base by ~50%.
WRT subnodes, you can go with device_for_each_child_node() and retrieve gpio array per digit. It means you will have an array of arrays of GPIOs.
> [1] - https://lore.kernel.org/lkml/2a8d19ee-b18b-4b7c-869f-7d601cea30b6@alliedtelesis.co.nz/
-- With Best Regards, Andy Shevchenko
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