On Mon, Nov 25, 2024 at 08:02:20PM -0300, Rafael V. Volkmer wrote: > Add `COUNTER_FUNCTION_DISABLE` to the `counter_function` enum in the > counter API. This allows file operations to signal other drivers to > disable hardware resources, reducing energy consumption in > power-sensitive scenarios. > > Previously, tests with Texas Instruments' eQEP modules revealed that > hardware resources remained active unless the driver was removed, > offering no user command to stop the count. This approach exposed the > fragility of these resources. > > To address this, introduce a new enum option in the counter API to > receive commands for disabling the hardware. This ensures the hardware > enters an idle, power-saving state when not in use. > > Signed-off-by: Rafael V. Volkmer <rafael.v.volkmer@xxxxxxxxx> Hello Rafael, I wonder whether a new enum option is actually needed in this case. Wouldn't the Count "enable" extension already provide a way for users to stop the counting? I imagine the driver would determine implicitly that the device can enter a power-saving state in that scenario when counting has been disabled by the user. William Breathitt Gray
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