| Message ID | 1425485680-8417-4-git-send-email-j.anaszewski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Mar 4, 2015 at 8:14 AM, Jacek Anaszewski <j.anaszewski@samsung.com> wrote: > The documentation being added contains overall description of the > LED Flash Class and the related sysfs attributes. > Thanks, merged! -Bryan > Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> > Acked-by: Kyungmin Park <kyungmin.park@samsung.com> > Cc: Bryan Wu <cooloney@gmail.com> > Cc: Richard Purdie <rpurdie@rpsys.net> > --- > Documentation/leds/leds-class-flash.txt | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > create mode 100644 Documentation/leds/leds-class-flash.txt > > diff --git a/Documentation/leds/leds-class-flash.txt b/Documentation/leds/leds-class-flash.txt > new file mode 100644 > index 0000000..19bb673 > --- /dev/null > +++ b/Documentation/leds/leds-class-flash.txt > @@ -0,0 +1,22 @@ > + > +Flash LED handling under Linux > +============================== > + > +Some LED devices provide two modes - torch and flash. In the LED subsystem > +those modes are supported by LED class (see Documentation/leds/leds-class.txt) > +and LED Flash class respectively. The torch mode related features are enabled > +by default and the flash ones only if a driver declares it by setting > +LED_DEV_CAP_FLASH flag. > + > +In order to enable the support for flash LEDs CONFIG_LEDS_CLASS_FLASH symbol > +must be defined in the kernel config. A LED Flash class driver must be > +registered in the LED subsystem with led_classdev_flash_register function. > + > +Following sysfs attributes are exposed for controlling flash LED devices: > +(see Documentation/ABI/testing/sysfs-class-led-flash) > + - flash_brightness > + - max_flash_brightness > + - flash_timeout > + - max_flash_timeout > + - flash_strobe > + - flash_fault > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/leds/leds-class-flash.txt b/Documentation/leds/leds-class-flash.txt new file mode 100644 index 0000000..19bb673 --- /dev/null +++ b/Documentation/leds/leds-class-flash.txt @@ -0,0 +1,22 @@ + +Flash LED handling under Linux +============================== + +Some LED devices provide two modes - torch and flash. In the LED subsystem +those modes are supported by LED class (see Documentation/leds/leds-class.txt) +and LED Flash class respectively. The torch mode related features are enabled +by default and the flash ones only if a driver declares it by setting +LED_DEV_CAP_FLASH flag. + +In order to enable the support for flash LEDs CONFIG_LEDS_CLASS_FLASH symbol +must be defined in the kernel config. A LED Flash class driver must be +registered in the LED subsystem with led_classdev_flash_register function. + +Following sysfs attributes are exposed for controlling flash LED devices: +(see Documentation/ABI/testing/sysfs-class-led-flash) + - flash_brightness + - max_flash_brightness + - flash_timeout + - max_flash_timeout + - flash_strobe + - flash_fault