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video: adf: make dpms_state sysfs attribute writable

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Change-Id: I04e7785cbddac160003e6c9edaf62d20b367fdc9
Signed-off-by: Greg Hackmann <ghackmann@google.com>
This commit is contained in:
Greg Hackmann
2013-08-15 12:51:22 -07:00
committed by John Stultz
parent 1f9e414c3a
commit e3580d589d
1 changed files with 19 additions and 1 deletions
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20
drivers/video/adf/adf_sysfs.c
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@@ -33,6 +33,24 @@ static ssize_t dpms_state_show(struct device *dev,
adf_interface_dpms_state(intf));
}
static ssize_t dpms_state_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct adf_interface *intf = dev_to_adf_interface(dev);
u8 dpms_state;
int err;
err = kstrtou8(buf, 0, &dpms_state);
if (err < 0)
return err;
err = adf_interface_blank(intf, dpms_state);
if (err < 0)
return err;
return count;
}
static ssize_t current_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -80,7 +98,7 @@ static ssize_t hotplug_detect_show(struct device *dev,
}
static struct device_attribute adf_interface_attrs[] = {
__ATTR_RO(dpms_state),
__ATTR(dpms_state, S_IRUGO|S_IWUSR, dpms_state_show, dpms_state_store),
__ATTR_RO(current_mode),
__ATTR_RO(hotplug_detect),
__ATTR_RO(type),