pinctrl: single: config: enable the pin's input

It enables / disables the input buffer. As explained in the description
of 'enum pin_config_param' this does not affect the pin's ability to
drive output.

Signed-off-by: Dario Binacchi <dariobin@libero.it>
Acked-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20210602150420.18202-1-dariobin@libero.it
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 7834d5d..e3aa647 100644 (file)
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -534,6 +534,7 @@ static int pcs_pinconf_get(struct pinctrl_dev *pctldev,
                case PIN_CONFIG_DRIVE_STRENGTH:
                case PIN_CONFIG_SLEW_RATE:
                case PIN_CONFIG_MODE_LOW_POWER:
+               case PIN_CONFIG_INPUT_ENABLE:
                default:
                        *config = data;
                        break;
@@ -572,6 +573,7 @@ static int pcs_pinconf_set(struct pinctrl_dev *pctldev,
                        case PIN_CONFIG_DRIVE_STRENGTH:
                        case PIN_CONFIG_SLEW_RATE:
                        case PIN_CONFIG_MODE_LOW_POWER:
+                       case PIN_CONFIG_INPUT_ENABLE:
                                shift = ffs(func->conf[i].mask) - 1;
                                data &= ~func->conf[i].mask;
                                data |= (arg << shift) & func->conf[i].mask;
@@ -918,6 +920,7 @@ static int pcs_parse_pinconf(struct pcs_device *pcs, struct device_node *np,
        static const struct pcs_conf_type prop2[] = {
                { "pinctrl-single,drive-strength", PIN_CONFIG_DRIVE_STRENGTH, },
                { "pinctrl-single,slew-rate", PIN_CONFIG_SLEW_RATE, },
+               { "pinctrl-single,input-enable", PIN_CONFIG_INPUT_ENABLE, },
                { "pinctrl-single,input-schmitt", PIN_CONFIG_INPUT_SCHMITT, },
                { "pinctrl-single,low-power-mode", PIN_CONFIG_MODE_LOW_POWER, },
        };