driver/ddr/fsl: Revise workaround A008511 for A009803

[u-boot] / drivers / gpio / gpio-uclass.c

diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c
index b58d4e64e8ad92e51c52fe76f3ae5477180c540e..4559739d619c637d79495e349290b7ae93646de9 100644 (file)
--- 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>
@@ -113,19 +114,33 @@ int gpio_lookup_name(const char *name, struct udevice **devp,
        return 0;
 }
 
+int gpio_xlate_offs_flags(struct udevice *dev,
+                                        struct gpio_desc *desc,
+                                        struct fdtdec_phandle_args *args)
+{
+       if (args->args_count < 1)
+               return -EINVAL;
+
+       desc->offset = args->args[0];
+
+       if (args->args_count < 2)
+               return 0;
+
+       if (args->args[1] & GPIO_ACTIVE_LOW)
+               desc->flags = GPIOD_ACTIVE_LOW;
+
+       return 0;
+}
+
 static int gpio_find_and_xlate(struct gpio_desc *desc,
                               struct fdtdec_phandle_args *args)
 {
        struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
 
-       /* Use the first argument as the offset by default */
-       if (args->args_count > 0)
-               desc->offset = args->args[0];
+       if (ops->xlate)
+               return ops->xlate(desc->dev, desc, args);
        else
-               desc->offset = -1;
-       desc->flags = 0;
-
-       return ops->xlate ? ops->xlate(desc->dev, desc, args) : 0;
+               return gpio_xlate_offs_flags(desc->dev, desc, args);
 }
 
 int dm_gpio_request(struct gpio_desc *desc, const char *label)
@@ -352,6 +367,38 @@ int dm_gpio_set_value(const struct gpio_desc *desc, int value)
        return 0;
 }
 
+int dm_gpio_get_open_drain(struct gpio_desc *desc)
+{
+       struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
+       int ret;
+
+       ret = check_reserved(desc, "get_open_drain");
+       if (ret)
+               return ret;
+
+       if (ops->set_open_drain)
+               return ops->get_open_drain(desc->dev, desc->offset);
+       else
+               return -ENOSYS;
+}
+
+int dm_gpio_set_open_drain(struct gpio_desc *desc, int value)
+{
+       struct dm_gpio_ops *ops = gpio_get_ops(desc->dev);
+       int ret;
+
+       ret = check_reserved(desc, "set_open_drain");
+       if (ret)
+               return ret;
+
+       if (ops->set_open_drain)
+               ret = ops->set_open_drain(desc->dev, desc->offset, value);
+       else
+               return 0; /* feature not supported -> ignore setting */
+
+       return ret;
+}
+
 int dm_gpio_set_dir_flags(struct gpio_desc *desc, ulong flags)
 {
        struct udevice *dev = desc->dev;
@@ -605,6 +652,7 @@ static int _gpio_request_by_name_nodev(const void *blob, int node,
 
        desc->dev = NULL;
        desc->offset = 0;
+       desc->flags = 0;
        ret = fdtdec_parse_phandle_with_args(blob, node, list_name,
                                             "#gpio-cells", 0, index, &args);
        if (ret) {