Messages in this thread |  | | From | Janusz Krzysztofik <> | Subject | Re: [RFC PATCH v2 07/12] mtd: rawnand: ams-delta: Set port direction once per transfer | Date | Wed, 08 Aug 2018 18:55:35 +0200 |
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Hi Boris,
On Tuesday, August 7, 2018 8:57:52 PM CEST Boris Brezillon wrote: > On Tue, 7 Aug 2018 00:29:13 +0200 > Janusz Krzysztofik <jmkrzyszt@gmail.com> wrote: > > > In its current shape, the driver sets data port direction before each > > byte read/write operation, even during multi-byte transfers. Since > > performance of the driver is completely not acceptable on Amstrad Delta > > after it has been converted to GPIO bitbang, try to improve things a > > bit by setting the port direction only on first byte of each transfer. > ... > I'd suggest a slightly different approach where the data pins > direction state is stored in the the priv struct and only changed when > required. This way you just have to add a test in > ams_delta_read/write_byte().
Good idea, I'm going to use it, thanks.
Once done, may I also move that one earlier in the series so that it can be applied while our discussion on GPIO bitmap changes still continues?
Thanks, Janusz
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