[U-Boot] [PATCH v2] gpio: xilinx: Add support for using label property

[Michal Simek]

Add support for reading label property from DT and set up bank name
based on that. If label property is not present full device node name is
used.

Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---

Changes in v2:
- Use strdup

 drivers/gpio/xilinx_gpio.c | 10 +++++++++-
 drivers/gpio/zynq_gpio.c   | 10 +++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/xilinx_gpio.c b/drivers/gpio/xilinx_gpio.c
index fc460c343efe..2389abee3777 100644
--- a/drivers/gpio/xilinx_gpio.c
+++ b/drivers/gpio/xilinx_gpio.c
@@ -241,8 +241,16 @@ static int xilinx_gpio_probe(struct udevice *dev)
        struct xilinx_gpio_platdata *platdata = dev_get_platdata(dev);
        struct xilinx_gpio_privdata *priv = dev_get_priv(dev);
        struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+       const void *label_ptr;
 
-       uc_priv->bank_name = dev->name;
+       label_ptr = dev_read_prop(dev, "label", NULL);
+       if (label_ptr) {
+               uc_priv->bank_name = strdup(label_ptr);
+               if (!uc_priv->bank_name)
+                       return -ENOMEM;
+       } else {
+               uc_priv->bank_name = dev->name;
+       }
 
        uc_priv->gpio_count = platdata->bank_max[0] + platdata->bank_max[1];
 
diff --git a/drivers/gpio/zynq_gpio.c b/drivers/gpio/zynq_gpio.c
index 6fbaafb3fa3c..55a5cba0688e 100644
--- a/drivers/gpio/zynq_gpio.c
+++ b/drivers/gpio/zynq_gpio.c
@@ -336,8 +336,16 @@ static int zynq_gpio_probe(struct udevice *dev)
 {
        struct zynq_gpio_platdata *platdata = dev_get_platdata(dev);
        struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+       const void *label_ptr;
 
-       uc_priv->bank_name = dev->name;
+       label_ptr = dev_read_prop(dev, "label", NULL);
+       if (label_ptr) {
+               uc_priv->bank_name = strdup(label_ptr);
+               if (!uc_priv->bank_name)
+                       return -ENOMEM;
+       } else {
+               uc_priv->bank_name = dev->name;
+       }
 
        if (platdata->p_data)
                uc_priv->gpio_count = platdata->p_data->ngpio;
-- 
1.9.1

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