diff options
Diffstat (limited to 'drivers/base/interface.c')
| -rw-r--r-- | drivers/base/interface.c | 51 | 
1 files changed, 0 insertions, 51 deletions
| diff --git a/drivers/base/interface.c b/drivers/base/interface.c deleted file mode 100644 index bd515843a0cb..000000000000 --- a/drivers/base/interface.c +++ /dev/null | |||
| @@ -1,51 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * drivers/base/interface.c - common driverfs interface that's exported to | ||
| 3 | * the world for all devices. | ||
| 4 | * | ||
| 5 | * Copyright (c) 2002-3 Patrick Mochel | ||
| 6 | * Copyright (c) 2002-3 Open Source Development Labs | ||
| 7 | * | ||
| 8 | * This file is released under the GPLv2 | ||
| 9 | * | ||
| 10 | */ | ||
| 11 | |||
| 12 | #include <linux/device.h> | ||
| 13 | #include <linux/err.h> | ||
| 14 | #include <linux/stat.h> | ||
| 15 | #include <linux/string.h> | ||
| 16 | |||
| 17 | /** | ||
| 18 | * detach_state - control the default power state for the device. | ||
| 19 | * | ||
| 20 | * This is the state the device enters when it's driver module is | ||
| 21 | * unloaded. The value is an unsigned integer, in the range of 0-4. | ||
| 22 | * '0' indicates 'On', so no action will be taken when the driver is | ||
| 23 | * unloaded. This is the default behavior. | ||
| 24 | * '4' indicates 'Off', meaning the driver core will call the driver's | ||
| 25 | * shutdown method to quiesce the device. | ||
| 26 | * 1-3 indicate a low-power state for the device to enter via the | ||
| 27 | * driver's suspend method. | ||
| 28 | */ | ||
| 29 | |||
| 30 | static ssize_t detach_show(struct device * dev, char * buf) | ||
| 31 | { | ||
| 32 | return sprintf(buf, "%u\n", dev->detach_state); | ||
| 33 | } | ||
| 34 | |||
| 35 | static ssize_t detach_store(struct device * dev, const char * buf, size_t n) | ||
| 36 | { | ||
| 37 | u32 state; | ||
| 38 | state = simple_strtoul(buf, NULL, 10); | ||
| 39 | if (state > 4) | ||
| 40 | return -EINVAL; | ||
| 41 | dev->detach_state = state; | ||
| 42 | return n; | ||
| 43 | } | ||
| 44 | |||
| 45 | static DEVICE_ATTR(detach_state, 0644, detach_show, detach_store); | ||
| 46 | |||
| 47 | |||
| 48 | struct attribute * dev_default_attrs[] = { | ||
| 49 | &dev_attr_detach_state.attr, | ||
| 50 | NULL, | ||
| 51 | }; | ||
