Messages in this thread | | | From | David Brownell <> | Subject | Re: [RFC 2.6.27 1/1] gpiolib: add support for batch set of pins | Date | Mon, 29 Dec 2008 11:59:36 -0800 |
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On Sunday 28 December 2008, Ben Nizette wrote: > > > gpio_set_batch(DB0, value, 0xFFFF, 16) > > > > > > which has the nice performance benefit of skipping all the bit > > > counting in the most common use case scenario. > > > > but has the requirement that the driver know exactly the board level > > impmentation details (something that doesn't sound generic). > > The original use case for these batch operations was in a fastpath - > setting data lines on a framebuffer.
And the rationale for generalizing them was to let such fastpaths stop being board-specific hacks. :)
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