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authorMugunthan V N <mugunthanvnm@ti.com>2015-10-13 13:57:16 +0530
committerTom Rini <trini@konsulko.com>2015-10-22 14:44:02 -0400
commit1ed0f85fafcbc466081deb7640a62e0a603ba8e0 (patch)
tree055b2f2a2f5beb9cdb319c709baf810df463774b /drivers/gpio
parenteae7ae18533550b61a9d459deafaeeb460dcf6b7 (diff)
drivers: gpio: omap: add support for parsing additional gpio parameters
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>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/omap_gpio.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index cd960dc013..93d18e44a5 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -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)