hwspinlock_pdata Struct Reference

#include <hwspinlock.h>

Data Fields
int	base_id

Detailed Description

struct hwspinlock_pdata - platform data for hwspinlock drivers : base id for this hwspinlock device

hwspinlock devices provide system-wide hardware locks that are used by remote processors that have no other way to achieve synchronization.

To achieve that, each physical lock must have a system-wide id number that is agreed upon, otherwise remote processors can't possibly assume they're using the same hardware lock.

Usually boards have a single hwspinlock device, which provides several hwspinlocks, and in this case, they can be trivially numbered 0 to (num-of-locks - 1).

In case boards have several hwspinlocks devices, a different base id should be used for each hwspinlock device (they can't all use 0 as a starting id!).

This platform data structure should be used to provide the base id for each device (which is trivially 0 when only a single hwspinlock device exists). It can be shared between different platforms, hence its location.

Definition at line 57 of file hwspinlock.h.

Field Documentation

int base_id

Definition at line 58 of file hwspinlock.h.

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The documentation for this struct was generated from the following file:

• include/linux/hwspinlock.h