Hi Eric,
On Fri, Mar 25, 2016 at 01:12:11PM -0700, Eric Nelson wrote:
Device tree parsing of GPIO nodes is currently ignoring flags.
Add support for GPIO_ACTIVE_LOW by checking for the presence of the flag and setting the desc->flags field to the driver model constant GPIOD_ACTIVE_LOW.
You may need to try this: https://patchwork.ozlabs.org/patch/597363/
Regards, Peng.
Signed-off-by: Eric Nelson eric@nelint.com
drivers/gpio/gpio-uclass.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index b58d4e6..6d30612 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -6,6 +6,7 @@
#include <common.h> #include <dm.h> +#include <dt-bindings/gpio/gpio.h> #include <errno.h> #include <fdtdec.h> #include <malloc.h> @@ -118,12 +119,16 @@ static int gpio_find_and_xlate(struct gpio_desc *desc, { struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
- desc->flags = 0; /* Use the first argument as the offset by default */
- if (args->args_count > 0)
- if (args->args_count > 0) { desc->offset = args->args[0];
if ((args->args_count > 1) &&(args->args[1] & GPIO_ACTIVE_LOW))desc->flags = GPIOD_ACTIVE_LOW;- } else desc->offset = -1;
desc->flags = 0;
return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0;
}
2.6.2
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