Messages in this thread | | | From | Linus Walleij <> | Date | Thu, 2 Nov 2017 15:22:43 +0100 | Subject | Re: [PATCH v7 2/2] bus: add driver for the Technologic Systems NBUS |
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On Wed, Nov 1, 2017 at 6:14 PM, Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> wrote:
> This driver implements a GPIOs bit-banged bus, called the NBUS by > Technologic Systems. It is used to communicate with the peripherals in > the FPGA on the TS-4600 SoM. > > Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org>
This is still a very nice driver.
If you are working on supplemental patches: from the next merge window we will have:
+ int gpiod_get_array_value_cansleep(unsigned int array_size, + struct gpio_desc **desc_array, + int *value_array);
See: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/commit/?h=devel&id=eec1d566cdf94b57e8f5ba9fe60eea214929bcfc
If your GPIO controller also has .get_multiple() implemented it just becomes one register read if you're lucky.
BTW do you have a way upstream for this patch? ARM SoC?
Yours, Linus Walleij
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