Simplification is done by using OF helper function which increase readability of code and remove (if (var) var = be32_to_cpup;) assignment.
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
Changes in v2:
- New patch in this series
drivers/gpio/gpio-xilinx.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c
index 9ae7aa8..2aad534 100644
--- a/drivers/gpio/gpio-xilinx.c
+++ b/drivers/gpio/gpio-xilinx.c
@@ -170,24 +170,20 @@ static int xgpio_of_probe(struct device_node *np)
return -ENOMEM;
/* Update GPIO state shadow register with default value */
- tree_info = of_get_property(np, "xlnx,dout-default", NULL);
- if (tree_info)
- chip->gpio_state = be32_to_cpup(tree_info);
+ of_property_read_u32(np, "xlnx,dout-default", &chip->gpio_state);
+
+ /* By default, all pins are inputs */
+ chip->gpio_dir = 0xFFFFFFFF;
/* Update GPIO direction shadow register with default value */
- chip->gpio_dir = 0xFFFFFFFF; /* By default, all pins are inputs */
- tree_info = of_get_property(np, "xlnx,tri-default", NULL);
- if (tree_info)
- chip->gpio_dir = be32_to_cpup(tree_info);
+ of_property_read_u32(np, "xlnx,tri-default", &chip->gpio_dir);
+
+ /* By default assume full GPIO controller */
+ chip->mmchip.gc.ngpio = 32;
/* Check device node and parent device node for device width */
- chip->mmchip.gc.ngpio = 32; /* By default assume full GPIO controller */
- tree_info = of_get_property(np, "xlnx,gpio-width", NULL);
- if (!tree_info)
- tree_info = of_get_property(np->parent,
- "xlnx,gpio-width", NULL);
- if (tree_info)
- chip->mmchip.gc.ngpio = be32_to_cpup(tree_info);
+ of_property_read_u32(np, "xlnx,gpio-width",
+ (u32 *)&chip->mmchip.gc.ngpio);
spin_lock_init(&chip->gpio_lock);
--
1.8.2.3
pgpLdUYo7YgCt.pgp
Description: PGP signature
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