Parse the gpio-ranges property in Rockchip gpio nodes to be
independent from aliases and probe order for our bank id.
Signed-off-by: Johan Jonker <jbx6244@xxxxxxxxx>
---
drivers/gpio/gpio-rockchip.c | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index e5de15a2a..df74b71aa 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -702,24 +702,36 @@ static int rockchip_gpio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
- struct device_node *pctlnp = of_get_parent(np);
+ struct device_node *pctlnp;
struct pinctrl_dev *pctldev = NULL;
struct rockchip_pin_bank *bank = NULL;
struct rockchip_pin_deferred *cfg;
+ struct of_phandle_args args;
static int gpio;
int id, ret;
- if (!np || !pctlnp)
+ if (!np)
+ return -ENODEV;
+
+ ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args);
+ if (ret == 0) {
+ pctlnp = args.np;
+ id = args.args[1] / 32;
+ } else {
+ pctlnp = of_get_parent(np);
+ id = of_alias_get_id(np, "gpio");
+ if (id < 0)
+ id = gpio++;
+ }
+
+ if (!pctlnp)
return -ENODEV;
pctldev = of_pinctrl_get(pctlnp);
+ of_node_put(pctlnp);
if (!pctldev)
return -EPROBE_DEFER;
- id = of_alias_get_id(np, "gpio");
- if (id < 0)
- id = gpio++;
-
bank = rockchip_gpio_find_bank(pctldev, id);
if (!bank)
return -EINVAL;
--
2.20.1
