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drivers: gpio: omap: add support for parsing additional gpio parameters

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With DM_GPIO, gpio parameters like ACTIVE_(LOW/HIGH) are to be
parsed in xlate gpio drivers-ops. Since xlate is not implemented
in omap_gpio driver, the driver considers all gpio to be
ACTIVE_HIGH which is the default case and fails to return actual
gpio status for ACTIVE_LOW gpios. So adding .xlate ops to
omap_gpio.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Mugunthan V N 2015-10-13 13:57:16 +05:30 • committed by Tom Rini
parent eae7ae1853
commit 1ed0f85faf
1 changed files with 11 additions and 0 deletions
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11
drivers/gpio/omap_gpio.c
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@ -25,6 +25,7 @@
#include <asm/io.h>
#include <asm/errno.h>
#include <malloc.h>
#include <dt-bindings/gpio/gpio.h>
DECLARE_GLOBAL_DATA_PTR;
@ -276,12 +277,22 @@ static int omap_gpio_get_function(struct udevice *dev, unsigned offset)
return GPIOF_INPUT;
}
static int omap_gpio_xlate(struct udevice *dev, struct gpio_desc *desc,
struct fdtdec_phandle_args *args)
{
desc->offset = args->args[0];
desc->flags = args->args[1] & GPIO_ACTIVE_LOW ? GPIOD_ACTIVE_LOW : 0;
return 0;
}
static const struct dm_gpio_ops gpio_omap_ops = {
.direction_input = omap_gpio_direction_input,
.direction_output = omap_gpio_direction_output,
.get_value = omap_gpio_get_value,
.set_value = omap_gpio_set_value,
.get_function = omap_gpio_get_function,
.xlate = omap_gpio_xlate,
};
static int omap_gpio_probe(struct udevice *dev)