[PATCH 11/16] pinctrl: samsung: Use one GPIO chip per pin bank

On Wednesday 10 of October 2012 09:43:25 Linus Walleij wrote:

On Mon, Oct 8, 2012 at 10:39 AM, Tomasz Figa [off-list ref] wrote:

quoted

This patch modifies the pinctrl-samsung driver to register one GPIO
chip
per pin bank, instead of a single chip for all pin banks of the
controller.

It simplifies GPIO accesses a lot (constant time instead of looping
through the list of banks to find the right one) and should have a good
effect on performance of any bit-banging driver.

In addition it allows to reference GPIO pins by a phandle to the bank
node and a local pin offset inside of the bank (similar to previous
gpiolib driver), which is more clear and readable than using indices
relative to the whole pin controller.

Example:
        device {
        
                /* ... */
                gpios = <&gpk0 4 0>;
                /* ... */
        
        };

Signed-off-by: Tomasz Figa <redacted>

This also looks good (and I think it has been discussed before)
so needs to be applied in isolation from the regs-to-DT stuff.

Please see my reply for patch 9.

Best regards,
-- 
Tomasz Figa
Samsung Poland R&D Center