[RESEND PATCH 3/3] pinctrl: renesas: Implement get_pin_muxing() callback

Lad Prabhakar
2020-11-04T17:27:06Z

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

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@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 275702d13a..a1da45db2e 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);
@@ -495,6 +520,7 @@ static int sh_pfc_gpio_request_enable(struct udevice *dev,
return ret;

cfg->type = PINMUX_TYPE_GPIO;
+ cfg->function_name = "gpio";

return 0;
}
@@ -524,6 +550,7 @@ 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;
}
@@ -547,6 +574,7 @@ 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;
}
@@ -581,6 +609,7 @@ 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:
@@ -787,6 +816,7 @@ 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,

@@ -817,6 +847,7 @@ 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