[PATCH v4 2/2] pinctrl: renesas: Implement get_pin_muxing() callback

[Lad Prabhakar]

Implement get_pin_muxing() callback so that pinmux status
command can be used on Renesas platforms.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad...@bp.renesas.com>
Reviewed-by: Biju Das <biju.das...@bp.renesas.com>
---
 drivers/pinctrl/renesas/pfc.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/pinctrl/renesas/pfc.c b/drivers/pinctrl/renesas/pfc.c
index 1b1f583ee6..c45fdca64d 100644
--- a/drivers/pinctrl/renesas/pfc.c
+++ b/drivers/pinctrl/renesas/pfc.c
@@ -450,6 +450,30 @@ static const char *sh_pfc_pinctrl_get_group_name(struct 
udevice *dev,
        return priv->pfc.info->groups[selector].name;
 }
 
+static int sh_pfc_pinctrl_get_pin_muxing(struct udevice *dev,
+                                        unsigned int selector,
+                                        char *buf, int size)
+{
+       struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
+       struct sh_pfc_pinctrl *pmx = &priv->pmx;
+       struct sh_pfc *pfc = &priv->pfc;
+       struct sh_pfc_pin_config *cfg;
+       const struct sh_pfc_pin *pin;
+       int idx;
+
+       pin = &priv->pfc.info->pins[selector];
+       if (!pin) {
+               snprintf(buf, size, "Unknown");
+               return -EINVAL;
+       }
+
+       idx = sh_pfc_get_pin_index(pfc, pin->pin);
+       cfg = &pmx->configs[idx];
+       snprintf(buf, size, "%s", cfg->name);
+
+       return 0;
+}
+
 static int sh_pfc_pinctrl_get_functions_count(struct udevice *dev)
 {
        struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
@@ -816,6 +840,7 @@ static struct pinctrl_ops sh_pfc_pinctrl_ops = {
        .get_pin_name           = sh_pfc_pinctrl_get_pin_name,
        .get_groups_count       = sh_pfc_pinctrl_get_groups_count,
        .get_group_name         = sh_pfc_pinctrl_get_group_name,
+       .get_pin_muxing         = sh_pfc_pinctrl_get_pin_muxing,
        .get_functions_count    = sh_pfc_pinctrl_get_functions_count,
        .get_function_name      = sh_pfc_pinctrl_get_function_name,
 
-- 
2.17.1