Thread (2 messages) 2 messages, 2 authors, 2007-02-12

Re: [RFC]: s3c2410fb conversion

From: Ben Dooks <hidden>
Date: 2007-02-12 10:06:49

On Fri, Jan 26, 2007 at 09:06:44AM +0100, Krzysztof Helt wrote:
Hello,

The s3c2410fb driver needs register values set for every
platform. A way of conversion is to move as many values to
particular fields (e.g. resolution, bit depth, etc.) and
calculate the register values from them.
I definetly think we should be passing a number of items as
more generic info, such as the pixel clock range, and anything
that can be set from a mode info structure.

This should possibly be the first stage of development, and then
we can see what else can be done.
I want to ask how far one should move in conversion of the
driver. Should enumerated values also be moved to separate fields
or they can be set with "or" operator (I) into existing register
fields? I mean values (usually bits) like display type (STN/TFT
bit), etc.

E.g., the pxafb driver works with the latter approach. Most of
values are calculated but some of them are set as or-ed values
into register-like fields (the bits from fields are directly
copied to register's bits and completed by bits from calculated
values).
It might be easier to pass lcdcon1 through, and calculate the
rest from a mode info structure.

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'

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