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gpio: dwapb_gpio: convert to livetree

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Convert 'gpio_dwapb_bind' to iterate over subnodes using livetree
functions (inspired from mt7621_gpio.c).

Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
This commit is contained in:
Simon Goldschmidt 2019-05-09 22:12:00 +02:00 committed by Marek Vasut
parent 6cdd0a4e54
commit 1b898ffc04
1 changed files with 11 additions and 14 deletions
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25
drivers/gpio/dwapb_gpio.c
View file

@ -17,8 +17,6 @@
#include <errno.h>
#include <reset.h>
DECLARE_GLOBAL_DATA_PTR;
#define GPIO_SWPORT_DR(p) (0x00 + (p) * 0xc)
#define GPIO_SWPORT_DDR(p) (0x04 + (p) * 0xc)
#define GPIO_INTEN 0x30
@ -150,10 +148,10 @@ static int gpio_dwapb_probe(struct udevice *dev)
static int gpio_dwapb_bind(struct udevice *dev)
{
struct gpio_dwapb_platdata *plat = dev_get_platdata(dev);
const void *blob = gd->fdt_blob;
struct udevice *subdev;
fdt_addr_t base;
int ret, node, bank = 0;
int ret, bank = 0;
ofnode node;
/* If this is a child device, there is nothing to do here */
if (plat)
@ -165,10 +163,9 @@ static int gpio_dwapb_bind(struct udevice *dev)
return -ENXIO;
}
for (node = fdt_first_subnode(blob, dev_of_offset(dev));
node > 0;
node = fdt_next_subnode(blob, node)) {
if (!fdtdec_get_bool(blob, node, "gpio-controller"))
for (node = dev_read_first_subnode(dev); ofnode_valid(node);
node = dev_read_next_subnode(node)) {
if (!ofnode_read_bool(node, "gpio-controller"))
continue;
plat = devm_kcalloc(dev, 1, sizeof(*plat), GFP_KERNEL);
@ -177,15 +174,15 @@ static int gpio_dwapb_bind(struct udevice *dev)
plat->base = base;
plat->bank = bank;
plat->pins = fdtdec_get_int(blob, node, "snps,nr-gpios", 0);
plat->name = fdt_stringlist_get(blob, node, "bank-name", 0,
NULL);
if (!plat->name) {
plat->pins = ofnode_read_u32_default(node, "snps,nr-gpios", 0);
if (ofnode_read_string_index(node, "bank-name", 0,
&plat->name)) {
/*
* Fall back to node name. This means accessing pins
* via bank name won't work.
*/
plat->name = fdt_get_name(blob, node, NULL);
plat->name = ofnode_get_name(node);
}
ret = device_bind(dev, dev->driver, plat->name,
@ -193,7 +190,7 @@ static int gpio_dwapb_bind(struct udevice *dev)
if (ret)
return ret;
dev_set_of_offset(subdev, node);
dev->node = node;
bank++;
}