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2017-06-08power: reset: at91-poweroff: fix clobber listAlexandre Belloni1-1/+1
Assembly in at91_lpddr_poweroff has r0 in the clobber list but uses r6. Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-06-08power: supply: twl4030-charger: remove nonstandard max_current sysfs attributeH. Nikolaus Schaller2-80/+0
Since we now support the standard 'input_current_limit' property by commit 3fb319c2cdcd ("power: supply: twl4030-charger: add writable INPUT_CURRENT_LIMIT property") we can now remove the nonstandard 'max_current' sysfs attribute. See Documentation/power/power_supply_class.txt line 125 Both are functionally equivalent. From ABI point of view it is just a rename of the property. This also removes the entry in Documentation/ABI/testing/sysfs-class-power-twl4030 Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-06-08power: supply: ltc3651-charger: fix some error codes in probeDan Carpenter1-3/+3
There are several cut and past bugs here. ltc3651_charger->charger is NULL at this point, so we return success instead of the intended error codes. Fixes: c94d4ed017ae ("power: supply: Add ltc3651-charger driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> [Wei Yongjun found the same issue independently] Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-06-08power: supply: sysfs: parse string as enum when writing propertyDavid Lechner1-39/+85
This fixes the TODO to parse strings and convert them to enum values when writing to a power_supply class property sysfs attribute. There is at least one driver that has a writable enum property that previously could only be written as an integer, so a fallback to writing enums as integers instead of strings is provided so we don't break existing userspace programs. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Sebastian Reichel <sre@kernel.org>
2017-06-08power: supply: Add Apple Brick ID power supply typeBenson Leung2-8/+9
Apple currently supports three very common USB chargers: https://www.apple.com/power-adapters/ These chargers implement a proprietary Apple method for advertising 1A, 2.1A, and 2.4A at 5V called "Brick ID". In addition, 3rd parties implement the same charging method in many charging accessories that work with iOS devices. Devices that have charger detection chips such as the Pericom PI3USB9281, eg. Google Chromebook Pixel 2015, are capable of detecting these chargers, so let's add a type to facilicate passing that info up to userspace. This adds a separate power supply type for Apple's proprietary "Brick ID" charging method. Signed-off-by: Benson Leung <bleung@chromium.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-05-15power: supply: core: Add support for supplied-from device-propertyHans de Goede1-1/+23
On devicetree using platforms the devicetree can provide info on which power-supplies supply another power-supply through phandles. This commit adds support for providing this info on non devicetree platforms through the platform code setting a supplied-from device-property on the power-supplies parent device. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-05-15power: supply: axp20x_usb_power: Drop unnecessary staticJulia Lawall1-1/+1
Drop static on a local variable, when the variable is either first initialized or never used, on every possible execution path through the function. The static has no benefit, and dropping it reduces the code size. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; // </smpl> The change in code size is indicates by the following output from the size command. before: text data bss dec hex filename 2865 252 8 3125 c35 drivers/power/supply/axp20x_usb_power.o after: text data bss dec hex filename 2822 252 0 3074 c02 drivers/power/supply/axp20x_usb_power.o Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-05-15power: supply: Add ltc3651-charger driverMike Looijmans3-0/+218
The LTC3651 reports its status via GPIO lines. This driver translates the GPIO levels to battery charger status information via sysfs. It relies on devicetree to supply the IO configuration. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>