[PATCH v2 3/4] pinctrl: pinctrl_stm32: Populate uc_priv->name[] with pinmux node's name

[Patrice Chotard]

Populate uc_priv->name[] with pinmux node's name in order to indicate
the pinmuxing's name in case GPIO is configured in alternate.

For example, for STM32 SoC's based platform, "gpio status" command
output :

  before
    Bank GPIOZ:
      GPIOZ0: unused : 0 [ ]
      GPIOZ1: unused : 0 [ ]
      GPIOZ2: unused : 0 [ ]
      GPIOZ3: unused : 0 [ ]
      GPIOZ4: func
      GPIOZ5: func
      GPIOZ6: unused : 0 [ ]
      GPIOZ7: unused : 0 [ ]
      GPIOZ8: unknown
      GPIOZ9: unknown
      GPIOZ10: unknown
      GPIOZ11: unknown
      GPIOZ12: unknown
      GPIOZ13: unknown
      GPIOZ14: unknown
      GPIOZ15: unknown

  After
    Bank GPIOZ:
      GPIOZ0: unused : 0 [ ]
      GPIOZ1: unused : 0 [ ]
      GPIOZ2: unused : 0 [ ]
      GPIOZ3: unused : 0 [ ]
      GPIOZ4: func i2c4-0
      GPIOZ5: func i2c4-0
      GPIOZ6: unused : 0 [ ]
      GPIOZ7: unused : 0 [ ]
      GPIOZ8: unknown
      GPIOZ9: unknown
      GPIOZ10: unknown
      GPIOZ11: unknown
      GPIOZ12: unknown
      GPIOZ13: unknown
      GPIOZ14: unknown
      GPIOZ15: unknown

Signed-off-by: Patrice Chotard <patrice.chotard at foss.st.com>
---

Changes in v2:
   - add gpio test

 drivers/pinctrl/pinctrl_stm32.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/pinctrl_stm32.c b/drivers/pinctrl/pinctrl_stm32.c
index 990cd19286..b755fa42b4 100644
--- a/drivers/pinctrl/pinctrl_stm32.c
+++ b/drivers/pinctrl/pinctrl_stm32.c
@@ -257,10 +257,12 @@ static int stm32_pinctrl_probe(struct udevice *dev)
 	return 0;
 }
 
-static int stm32_gpio_config(struct gpio_desc *desc,
+static int stm32_gpio_config(ofnode node,
+			     struct gpio_desc *desc,
 			     const struct stm32_gpio_ctl *ctl)
 {
 	struct stm32_gpio_priv *priv = dev_get_priv(desc->dev);
+	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(desc->dev);
 	struct stm32_gpio_regs *regs = priv->regs;
 	struct stm32_pinctrl_priv *ctrl_priv;
 	int ret;
@@ -291,6 +293,8 @@ static int stm32_gpio_config(struct gpio_desc *desc,
 	index = desc->offset;
 	clrsetbits_le32(&regs->otyper, OTYPE_MSK << index, ctl->otype << index);
 
+	uc_priv->name[desc->offset] = strdup(ofnode_get_name(node));
+
 	hwspinlock_unlock(&ctrl_priv->hws);
 
 	return 0;
@@ -385,7 +389,7 @@ static int stm32_pinctrl_config(ofnode node)
 			if (rv)
 				return rv;
 			desc.offset = gpio_dsc.pin;
-			rv = stm32_gpio_config(&desc, &gpio_ctl);
+			rv = stm32_gpio_config(node, &desc, &gpio_ctl);
 			log_debug("rv = %d\n\n", rv);
 			if (rv)
 				return rv;
-- 
2.25.1