[PATCH v3 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 | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/pinctrl/renesas/pfc.c b/drivers/pinctrl/renesas/pfc.c
index 174e91923a..4c1e770422 100644
--- a/drivers/pinctrl/renesas/pfc.c
+++ b/drivers/pinctrl/renesas/pfc.c
@@ -44,6 +44,7 @@ enum sh_pfc_model {
 
 struct sh_pfc_pin_config {
        u32 type;
+       const char *function_name;
 };
 
 struct sh_pfc_pinctrl {
@@ -448,6 +449,30 @@ 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->function_name);
+
+       return 0;
+}
+
 static int sh_pfc_pinctrl_get_functions_count(struct udevice *dev)
 {
        struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
@@ -497,6 +522,7 @@ static int sh_pfc_gpio_request_enable(struct udevice *dev,
                return ret;
 
        cfg->type = PINMUX_TYPE_GPIO;
+       cfg->function_name = "gpio";
 
        return 0;
 }
@@ -526,6 +552,7 @@ static int sh_pfc_gpio_disable_free(struct udevice *dev,
        cfg = &pmx->configs[idx];
 
        cfg->type = PINMUX_TYPE_NONE;
+       cfg->function_name = "none";
 
        return 0;
 }
@@ -551,6 +578,7 @@ static int sh_pfc_pinctrl_pin_set(struct udevice *dev, 
unsigned pin_selector,
                return ret;
 
        cfg->type = PINMUX_TYPE_FUNCTION;
+       cfg->function_name = "function";
 
        return 0;
 }
@@ -586,6 +614,7 @@ static int sh_pfc_pinctrl_group_set(struct udevice *dev, 
unsigned group_selector
                idx = sh_pfc_get_pin_index(pfc, grp->pins[i]);
                cfg = &pmx->configs[idx];
                cfg->type = PINMUX_TYPE_FUNCTION;
+               cfg->function_name = 
priv->pfc.info->groups[group_selector].name;
        }
 
 done:
@@ -792,6 +821,7 @@ 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,
 
@@ -822,6 +852,7 @@ static int sh_pfc_map_pins(struct sh_pfc *pfc, struct 
sh_pfc_pinctrl *pmx)
        for (i = 0; i < pfc->info->nr_pins; ++i) {
                struct sh_pfc_pin_config *cfg = &pmx->configs[i];
                cfg->type = PINMUX_TYPE_NONE;
+               cfg->function_name = "none";
        }
 
        return 0;
-- 
2.17.1