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| author | Jeff Garzik <jgarzik@pretzel.yyz.us> | 2005-06-22 13:10:49 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-06-22 13:10:49 -0400 |
| commit | 80bd6d7f5e0d872a0f5a151473d2a39d95d210a8 (patch) | |
| tree | b3a36048d6b7de88f7e906624ecb4b98816bb736 /Documentation/driver-model/device.txt | |
| parent | 949d33e70f2c3e93bfe5265a50e40175b1ab1ec1 (diff) | |
| parent | 2a5a68b840cbab31baab2d9b2e1e6de3b289ae1e (diff) | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'Documentation/driver-model/device.txt')
| -rw-r--r-- | Documentation/driver-model/device.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/driver-model/device.txt b/Documentation/driver-model/device.txt index 58cc5dc8fd3..a05ec50f800 100644 --- a/Documentation/driver-model/device.txt +++ b/Documentation/driver-model/device.txt @@ -76,6 +76,14 @@ driver_data: Driver-specific data. platform_data: Platform data specific to the device. + Example: for devices on custom boards, as typical of embedded + and SOC based hardware, Linux often uses platform_data to point + to board-specific structures describing devices and how they + are wired. That can include what ports are available, chip + variants, which GPIO pins act in what additional roles, and so + on. This shrinks the "Board Support Packages" (BSPs) and + minimizes board-specific #ifdefs in drivers. + current_state: Current power state of the device. saved_state: Pointer to saved state of the device. This is usable by |