linux-kernel - [PATCH v2 3/9] power: supply: axp20x_usb_power: allow disabling input current limiting

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Message-Id: <20190225033107.17326-4-wens@csie.org>
Date:   Mon, 25 Feb 2019 11:31:01 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>
Cc:     Chen-Yu Tsai <wens@...e.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
        Quentin Schulz <quentin.schulz@...tlin.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH v2 3/9] power: supply: axp20x_usb_power: allow disabling input current limiting

The AXP PMICs allow the user to disable current limiting on the VBUS
input. While read-out of this setting was already supported by the
driver, it did not allow the user to configure the PMIC to disable
current limiting.

Add support for this.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 drivers/power/supply/axp20x_usb_power.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index cd9b90d79839..e2f353906bb1 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -230,6 +230,11 @@ static int axp20x_usb_power_set_current_max(struct axp20x_usb_power *power,
 		return regmap_update_bits(power->regmap,
 					  AXP20X_VBUS_IPSOUT_MGMT,
 					  AXP20X_VBUS_CLIMIT_MASK, val);
+	case -1:
+		return regmap_update_bits(power->regmap,
+					  AXP20X_VBUS_IPSOUT_MGMT,
+					  AXP20X_VBUS_CLIMIT_MASK,
+					  AXP20X_VBUS_CLIMIT_NONE);
 	default:
 		return -EINVAL;
 	}
-- 
2.20.1