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From:   Dario Binacchi <dariobin@libero.it>
To:     linux-kernel@vger.kernel.org
Cc:     Dario Binacchi <dariobin@libero.it>,
        Haojian Zhuang <haojian.zhuang@linaro.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Tony Lindgren <tony@atomide.com>,
        linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
        linux-omap@vger.kernel.org
Subject: [PATCH] pinctrl: single: config: enable the pin's input
Date:   Fri, 14 May 2021 18:38:18 +0200
Message-Id: <20210514163818.12178-1-dariobin@libero.it>
Precedence: bulk

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>
---

 drivers/pinctrl/pinctrl-single.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index 2c9c9835f375..4e7cdb9ee855 100644
--- 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, },
 	};
-- 
2.17.1