Message-ID: <CAK5ve-+JW4+bzxPSHCMBPdEDNWW8yWjgL_QyK+tNG_woTT=tLw@mail.gmail.com>
Date:	Mon, 9 Mar 2015 17:17:00 -0700
From:	Bryan Wu <cooloney@...il.com>
To:	Jacek Anaszewski <j.anaszewski@...sung.com>
Cc:	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	"linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Pavel Machek <pavel@....cz>,
	"rpurdie@...ys.net" <rpurdie@...ys.net>,
	Sakari Ailus <sakari.ailus@....fi>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>
Subject: Re: [PATCH/RFC v12 02/19] leds: flash: document sysfs interface

On Wed, Mar 4, 2015 at 8:14 AM, Jacek Anaszewski
<j.anaszewski@...sung.com> wrote:
> Add a documentation of LED Flash class specific sysfs attributes.
>

Thanks, merged!
-Bryan

> Signed-off-by: Jacek Anaszewski <j.anaszewski@...sung.com>
> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
> Cc: Bryan Wu <cooloney@...il.com>
> Cc: Richard Purdie <rpurdie@...ys.net>
> ---
>  Documentation/ABI/testing/sysfs-class-led-flash |   80 +++++++++++++++++++++++
>  1 file changed, 80 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-class-led-flash
>
> diff --git a/Documentation/ABI/testing/sysfs-class-led-flash b/Documentation/ABI/testing/sysfs-class-led-flash
> new file mode 100644
> index 0000000..220a027
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-class-led-flash
> @@ -0,0 +1,80 @@
> +What:          /sys/class/leds/<led>/flash_brightness
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read/write
> +               Set the brightness of this LED in the flash strobe mode, in
> +               microamperes. The file is created only for the flash LED devices
> +               that support setting flash brightness.
> +
> +               The value is between 0 and
> +               /sys/class/leds/<led>/max_flash_brightness.
> +
> +What:          /sys/class/leds/<led>/max_flash_brightness
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read only
> +               Maximum brightness level for this LED in the flash strobe mode,
> +               in microamperes.
> +
> +What:          /sys/class/leds/<led>/flash_timeout
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read/write
> +               Hardware timeout for flash, in microseconds. The flash strobe
> +               is stopped after this period of time has passed from the start
> +               of the strobe. The file is created only for the flash LED
> +               devices that support setting flash timeout.
> +
> +What:          /sys/class/leds/<led>/max_flash_timeout
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read only
> +               Maximum flash timeout for this LED, in microseconds.
> +
> +What:          /sys/class/leds/<led>/flash_strobe
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read/write
> +               Flash strobe state. When written with 1 it triggers flash strobe
> +               and when written with 0 it turns the flash off.
> +
> +               On read 1 means that flash is currently strobing and 0 means
> +               that flash is off.
> +
> +What:          /sys/class/leds/<led>/flash_fault
> +Date:          March 2015
> +KernelVersion: 4.0
> +Contact:       Jacek Anaszewski <j.anaszewski@...sung.com>
> +Description:   read only
> +               Space separated list of flash faults that may have occurred.
> +               Flash faults are re-read after strobing the flash. Possible
> +               flash faults:
> +
> +               * led-over-voltage - flash controller voltage to the flash LED
> +                       has exceeded the limit specific to the flash controller
> +               * flash-timeout-exceeded - the flash strobe was still on when
> +                       the timeout set by the user has expired; not all flash
> +                       controllers may set this in all such conditions
> +               * controller-over-temperature - the flash controller has
> +                       overheated
> +               * controller-short-circuit - the short circuit protection
> +                       of the flash controller has been triggered
> +               * led-power-supply-over-current - current in the LED power
> +                       supply has exceeded the limit specific to the flash
> +                       controller
> +               * indicator-led-fault - the flash controller has detected
> +                       a short or open circuit condition on the indicator LED
> +               * led-under-voltage - flash controller voltage to the flash
> +                       LED has been below the minimum limit specific to
> +                       the flash
> +               * controller-under-voltage - the input voltage of the flash
> +                       controller is below the limit under which strobing the
> +                       flash at full current will not be possible;
> +                       the condition persists until this flag is no longer set
> +               * led-over-temperature - the temperature of the LED has exceeded
> +                       its allowed upper limit
> --
> 1.7.9.5
>
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