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authorDavid Brownell <dbrownell@users.sourceforge.net>2009-01-14 23:03:17 -0800
committerLiam Girdwood <lrg@slimlogic.co.uk>2009-03-31 09:56:20 +0100
commit853116a10544206b6b2cf42ebc9d78fba2668888 (patch)
treebc233aa343638575b36e300e863ce3d477374f57 /include
parent93e14baa4494607efe81608725f591e3ba31e3c1 (diff)
downloadop-kernel-dev-853116a10544206b6b2cf42ebc9d78fba2668888.zip
op-kernel-dev-853116a10544206b6b2cf42ebc9d78fba2668888.tar.gz
regulator: add get_status()
Based on previous LKML discussions: * Update docs for regulator sysfs class attributes to highlight the fact that all current attributes are intended to be control inputs, including notably "state" and "opmode" which previously implied otherwise. * Define a new regulator driver get_status() method, which is the first method reporting regulator outputs instead of inputs. It can report on/off and error status; or instead of simply "on", report the actual operating mode. For the moment, this is a sysfs-only interface, not accessible to regulator clients. Such clients can use the current notification interfaces to detect errors, if the regulator reports them. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'include')
-rw-r--r--include/linux/regulator/driver.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 2dae057..6e957aa 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -21,6 +21,17 @@
struct regulator_dev;
struct regulator_init_data;
+enum regulator_status {
+ REGULATOR_STATUS_OFF,
+ REGULATOR_STATUS_ON,
+ REGULATOR_STATUS_ERROR,
+ /* fast/normal/idle/standby are flavors of "on" */
+ REGULATOR_STATUS_FAST,
+ REGULATOR_STATUS_NORMAL,
+ REGULATOR_STATUS_IDLE,
+ REGULATOR_STATUS_STANDBY,
+};
+
/**
* struct regulator_ops - regulator operations.
*
@@ -72,6 +83,12 @@ struct regulator_ops {
int (*set_mode) (struct regulator_dev *, unsigned int mode);
unsigned int (*get_mode) (struct regulator_dev *);
+ /* report regulator status ... most other accessors report
+ * control inputs, this reports results of combining inputs
+ * from Linux (and other sources) with the actual load.
+ */
+ int (*get_status)(struct regulator_dev *);
+
/* get most efficient regulator operating mode for load */
unsigned int (*get_optimum_mode) (struct regulator_dev *, int input_uV,
int output_uV, int load_uA);
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