On 7/17/07, Németh Márton <[email protected]> wrote:
+Hardware accelerated blink of LEDs
+==================================
+
+Some LEDs can be programmed to blink without any CPU interaction. To
+support this feature, a LED driver can optionally implement the
+blink_set() function (see <linux/leds.h>). If implemeted, the
+ledtrig-timer tries to use it. The blink_set() function should return
+1 if the blink setting is supported, or 0 otherwise, which means that
+the LED will be turned on and off from software.
Normally object methods in kernel return 0 on success and error code
(such as -EINVAL for unsupported parameters) on error.
--
Dmitry
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