regulator: sysfs attribute reduction (v2)
Clean up the sysfs interface to regulators by only exposing the attributes that can be properly displayed. For example: when a particular regulator method is needed to display the value, only create that attribute when that method exists. This cleaned-up interface is much more comprehensible. Most regulators only support a subset of the possible methods, so often more than half the attributes would be meaningless. Many "not defined" values are no longer necessary. (But handling of out-of-range values still looks a bit iffy.) Documentation is updated to reflect that few of the attributes are *always* present, and to briefly explain why a regulator may not have a given attribute. This adds object code, about a dozen bytes more than was removed by the preceding patch, but saves a bunch of per-regulator data associated with the now-removed attributes. So there's a net reduction in memory footprint. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
David Brownell
Liam Girdwood
Родитель
4fca9545d1
Коммит
7ad68e2f97
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@ -3,8 +3,9 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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state. This holds the regulator output state.
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Some regulator directories will contain a field called
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state. This reports the regulator enable status, for
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regulators which can report that value.
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This will be one of the following strings:
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@ -18,7 +19,8 @@ Description:
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'disabled' means the regulator output is OFF and is not
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supplying power to the system..
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'unknown' means software cannot determine the state.
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'unknown' means software cannot determine the state, or
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the reported state is invalid.
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NOTE: this field can be used in conjunction with microvolts
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and microamps to determine regulator output levels.
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@ -53,9 +55,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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microvolts. This holds the regulator output voltage setting
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measured in microvolts (i.e. E-6 Volts).
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measured in microvolts (i.e. E-6 Volts), for regulators
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which can report that voltage.
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NOTE: This value should not be used to determine the regulator
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output voltage level as this value is the same regardless of
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@ -67,9 +70,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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microamps. This holds the regulator output current limit
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setting measured in microamps (i.e. E-6 Amps).
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setting measured in microamps (i.e. E-6 Amps), for regulators
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which can report that current.
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NOTE: This value should not be used to determine the regulator
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output current level as this value is the same regardless of
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@ -81,8 +85,9 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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opmode. This holds the regulator operating mode setting.
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Some regulator directories will contain a field called
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opmode. This holds the current regulator operating mode,
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for regulators which can report it.
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The opmode value can be one of the following strings:
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@ -92,7 +97,7 @@ Description:
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'standby'
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'unknown'
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The modes are described in include/linux/regulator/regulator.h
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The modes are described in include/linux/regulator/consumer.h
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NOTE: This value should not be used to determine the regulator
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output operating mode as this value is the same regardless of
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@ -104,9 +109,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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min_microvolts. This holds the minimum safe working regulator
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output voltage setting for this domain measured in microvolts.
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output voltage setting for this domain measured in microvolts,
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for regulators which support voltage constraints.
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NOTE: this will return the string 'constraint not defined' if
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the power domain has no min microvolts constraint defined by
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@ -118,9 +124,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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max_microvolts. This holds the maximum safe working regulator
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output voltage setting for this domain measured in microvolts.
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output voltage setting for this domain measured in microvolts,
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for regulators which support voltage constraints.
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NOTE: this will return the string 'constraint not defined' if
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the power domain has no max microvolts constraint defined by
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@ -132,10 +139,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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min_microamps. This holds the minimum safe working regulator
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output current limit setting for this domain measured in
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microamps.
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microamps, for regulators which support current constraints.
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NOTE: this will return the string 'constraint not defined' if
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the power domain has no min microamps constraint defined by
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@ -147,10 +154,10 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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max_microamps. This holds the maximum safe working regulator
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output current limit setting for this domain measured in
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microamps.
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microamps, for regulators which support current constraints.
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NOTE: this will return the string 'constraint not defined' if
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the power domain has no max microamps constraint defined by
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@ -185,7 +192,7 @@ Date: April 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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requested_microamps. This holds the total requested load
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current in microamps for this regulator from all its consumer
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devices.
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@ -204,125 +211,102 @@ Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_mem_microvolts. This holds the regulator output
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voltage setting for this domain measured in microvolts when
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the system is suspended to memory.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to memory voltage defined by
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platform code.
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the system is suspended to memory, for voltage regulators
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implementing suspend voltage configuration constraints.
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What: /sys/class/regulator/.../suspend_disk_microvolts
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_disk_microvolts. This holds the regulator output
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voltage setting for this domain measured in microvolts when
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the system is suspended to disk.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to disk voltage defined by
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platform code.
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the system is suspended to disk, for voltage regulators
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implementing suspend voltage configuration constraints.
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What: /sys/class/regulator/.../suspend_standby_microvolts
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_standby_microvolts. This holds the regulator output
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voltage setting for this domain measured in microvolts when
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the system is suspended to standby.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to standby voltage defined by
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platform code.
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the system is suspended to standby, for voltage regulators
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implementing suspend voltage configuration constraints.
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What: /sys/class/regulator/.../suspend_mem_mode
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_mem_mode. This holds the regulator operating mode
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setting for this domain when the system is suspended to
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memory.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to memory mode defined by
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platform code.
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memory, for regulators implementing suspend mode
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configuration constraints.
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What: /sys/class/regulator/.../suspend_disk_mode
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_disk_mode. This holds the regulator operating mode
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setting for this domain when the system is suspended to disk.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to disk mode defined by
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platform code.
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setting for this domain when the system is suspended to disk,
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for regulators implementing suspend mode configuration
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constraints.
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What: /sys/class/regulator/.../suspend_standby_mode
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_standby_mode. This holds the regulator operating mode
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setting for this domain when the system is suspended to
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standby.
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NOTE: this will return the string 'not defined' if
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the power domain has no suspend to standby mode defined by
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platform code.
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standby, for regulators implementing suspend mode
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configuration constraints.
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What: /sys/class/regulator/.../suspend_mem_state
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_mem_state. This holds the regulator operating state
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when suspended to memory.
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when suspended to memory, for regulators implementing suspend
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configuration constraints.
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This will be one of the following strings:
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'enabled'
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'disabled'
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'not defined'
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This will be one of the same strings reported by
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the "state" attribute.
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What: /sys/class/regulator/.../suspend_disk_state
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_disk_state. This holds the regulator operating state
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when suspended to disk.
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when suspended to disk, for regulators implementing
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suspend configuration constraints.
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This will be one of the following strings:
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'enabled'
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'disabled'
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'not defined'
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This will be one of the same strings reported by
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the "state" attribute.
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What: /sys/class/regulator/.../suspend_standby_state
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Date: May 2008
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KernelVersion: 2.6.26
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Contact: Liam Girdwood <lrg@slimlogic.co.uk>
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Description:
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Each regulator directory will contain a field called
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Some regulator directories will contain a field called
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suspend_standby_state. This holds the regulator operating
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state when suspended to standby.
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state when suspended to standby, for regulators implementing
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suspend configuration constraints.
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This will be one of the following strings:
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'enabled'
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'disabled'
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'not defined'
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This will be one of the same strings reported by
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the "state" attribute.
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@ -242,6 +242,7 @@ static ssize_t regulator_uV_show(struct device *dev,
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return ret;
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}
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static DEVICE_ATTR(microvolts, 0444, regulator_uV_show, NULL);
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static ssize_t regulator_uA_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -250,6 +251,7 @@ static ssize_t regulator_uA_show(struct device *dev,
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return sprintf(buf, "%d\n", _regulator_get_current_limit(rdev));
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}
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static DEVICE_ATTR(microamps, 0444, regulator_uA_show, NULL);
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static ssize_t regulator_name_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -289,6 +291,7 @@ static ssize_t regulator_opmode_show(struct device *dev,
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return regulator_print_opmode(buf, _regulator_get_mode(rdev));
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}
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static DEVICE_ATTR(opmode, 0444, regulator_opmode_show, NULL);
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static ssize_t regulator_print_state(char *buf, int state)
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{
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@ -307,6 +310,7 @@ static ssize_t regulator_state_show(struct device *dev,
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return regulator_print_state(buf, _regulator_is_enabled(rdev));
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}
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static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
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static ssize_t regulator_min_uA_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -318,6 +322,7 @@ static ssize_t regulator_min_uA_show(struct device *dev,
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return sprintf(buf, "%d\n", rdev->constraints->min_uA);
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}
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static DEVICE_ATTR(min_microamps, 0444, regulator_min_uA_show, NULL);
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static ssize_t regulator_max_uA_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -329,6 +334,7 @@ static ssize_t regulator_max_uA_show(struct device *dev,
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return sprintf(buf, "%d\n", rdev->constraints->max_uA);
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}
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static DEVICE_ATTR(max_microamps, 0444, regulator_max_uA_show, NULL);
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static ssize_t regulator_min_uV_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -340,6 +346,7 @@ static ssize_t regulator_min_uV_show(struct device *dev,
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return sprintf(buf, "%d\n", rdev->constraints->min_uV);
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}
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static DEVICE_ATTR(min_microvolts, 0444, regulator_min_uV_show, NULL);
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static ssize_t regulator_max_uV_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -351,6 +358,7 @@ static ssize_t regulator_max_uV_show(struct device *dev,
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return sprintf(buf, "%d\n", rdev->constraints->max_uV);
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}
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static DEVICE_ATTR(max_microvolts, 0444, regulator_max_uV_show, NULL);
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static ssize_t regulator_total_uA_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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@ -365,6 +373,7 @@ static ssize_t regulator_total_uA_show(struct device *dev,
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mutex_unlock(&rdev->mutex);
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return sprintf(buf, "%d\n", uA);
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}
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static DEVICE_ATTR(requested_microamps, 0444, regulator_total_uA_show, NULL);
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static ssize_t regulator_num_users_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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|
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@ -392,131 +401,106 @@ static ssize_t regulator_suspend_mem_uV_show(struct device *dev,
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{
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struct regulator_dev *rdev = dev_get_drvdata(dev);
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if (!rdev->constraints)
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return sprintf(buf, "not defined\n");
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return sprintf(buf, "%d\n", rdev->constraints->state_mem.uV);
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}
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static DEVICE_ATTR(suspend_mem_microvolts, 0444,
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regulator_suspend_mem_uV_show, NULL);
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static ssize_t regulator_suspend_disk_uV_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct regulator_dev *rdev = dev_get_drvdata(dev);
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|
||||
if (!rdev->constraints)
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return sprintf(buf, "not defined\n");
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return sprintf(buf, "%d\n", rdev->constraints->state_disk.uV);
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}
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static DEVICE_ATTR(suspend_disk_microvolts, 0444,
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regulator_suspend_disk_uV_show, NULL);
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static ssize_t regulator_suspend_standby_uV_show(struct device *dev,
|
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struct device_attribute *attr, char *buf)
|
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{
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struct regulator_dev *rdev = dev_get_drvdata(dev);
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|
||||
if (!rdev->constraints)
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return sprintf(buf, "not defined\n");
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return sprintf(buf, "%d\n", rdev->constraints->state_standby.uV);
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||||
}
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static DEVICE_ATTR(suspend_standby_microvolts, 0444,
|
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regulator_suspend_standby_uV_show, NULL);
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static ssize_t regulator_suspend_mem_mode_show(struct device *dev,
|
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struct device_attribute *attr, char *buf)
|
||||
{
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struct regulator_dev *rdev = dev_get_drvdata(dev);
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||||
|
||||
if (!rdev->constraints)
|
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return sprintf(buf, "not defined\n");
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return regulator_print_opmode(buf,
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rdev->constraints->state_mem.mode);
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}
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static DEVICE_ATTR(suspend_mem_mode, 0444,
|
||||
regulator_suspend_mem_mode_show, NULL);
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|
||||
static ssize_t regulator_suspend_disk_mode_show(struct device *dev,
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struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct regulator_dev *rdev = dev_get_drvdata(dev);
|
||||
|
||||
if (!rdev->constraints)
|
||||
return sprintf(buf, "not defined\n");
|
||||
return regulator_print_opmode(buf,
|
||||
rdev->constraints->state_disk.mode);
|
||||
}
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||||
static DEVICE_ATTR(suspend_disk_mode, 0444,
|
||||
regulator_suspend_disk_mode_show, NULL);
|
||||
|
||||
static ssize_t regulator_suspend_standby_mode_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct regulator_dev *rdev = dev_get_drvdata(dev);
|
||||
|
||||
if (!rdev->constraints)
|
||||
return sprintf(buf, "not defined\n");
|
||||
return regulator_print_opmode(buf,
|
||||
rdev->constraints->state_standby.mode);
|
||||
}
|
||||
static DEVICE_ATTR(suspend_standby_mode, 0444,
|
||||
regulator_suspend_standby_mode_show, NULL);
|
||||
|
||||
static ssize_t regulator_suspend_mem_state_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct regulator_dev *rdev = dev_get_drvdata(dev);
|
||||
|
||||
if (!rdev->constraints)
|
||||
return sprintf(buf, "not defined\n");
|
||||
|
||||
return regulator_print_state(buf,
|
||||
rdev->constraints->state_mem.enabled);
|
||||
}
|
||||
static DEVICE_ATTR(suspend_mem_state, 0444,
|
||||
regulator_suspend_mem_state_show, NULL);
|
||||
|
||||
static ssize_t regulator_suspend_disk_state_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct regulator_dev *rdev = dev_get_drvdata(dev);
|
||||
|
||||
if (!rdev->constraints)
|
||||
return sprintf(buf, "not defined\n");
|
||||
|
||||
return regulator_print_state(buf,
|
||||
rdev->constraints->state_disk.enabled);
|
||||
}
|
||||
static DEVICE_ATTR(suspend_disk_state, 0444,
|
||||
regulator_suspend_disk_state_show, NULL);
|
||||
|
||||
static ssize_t regulator_suspend_standby_state_show(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct regulator_dev *rdev = dev_get_drvdata(dev);
|
||||
|
||||
if (!rdev->constraints)
|
||||
return sprintf(buf, "not defined\n");
|
||||
|
||||
return regulator_print_state(buf,
|
||||
rdev->constraints->state_standby.enabled);
|
||||
}
|
||||
static DEVICE_ATTR(suspend_standby_state, 0444,
|
||||
regulator_suspend_standby_state_show, NULL);
|
||||
|
||||
|
||||
/*
|
||||
* These are the only attributes are present for all regulators.
|
||||
* Other attributes are a function of regulator functionality.
|
||||
*/
|
||||
static struct device_attribute regulator_dev_attrs[] = {
|
||||
__ATTR(name, 0444, regulator_name_show, NULL),
|
||||
__ATTR(microvolts, 0444, regulator_uV_show, NULL),
|
||||
__ATTR(microamps, 0444, regulator_uA_show, NULL),
|
||||
__ATTR(opmode, 0444, regulator_opmode_show, NULL),
|
||||
__ATTR(state, 0444, regulator_state_show, NULL),
|
||||
__ATTR(min_microvolts, 0444, regulator_min_uV_show, NULL),
|
||||
__ATTR(min_microamps, 0444, regulator_min_uA_show, NULL),
|
||||
__ATTR(max_microvolts, 0444, regulator_max_uV_show, NULL),
|
||||
__ATTR(max_microamps, 0444, regulator_max_uA_show, NULL),
|
||||
__ATTR(requested_microamps, 0444, regulator_total_uA_show, NULL),
|
||||
__ATTR(num_users, 0444, regulator_num_users_show, NULL),
|
||||
__ATTR(type, 0444, regulator_type_show, NULL),
|
||||
__ATTR(suspend_mem_microvolts, 0444,
|
||||
regulator_suspend_mem_uV_show, NULL),
|
||||
__ATTR(suspend_disk_microvolts, 0444,
|
||||
regulator_suspend_disk_uV_show, NULL),
|
||||
__ATTR(suspend_standby_microvolts, 0444,
|
||||
regulator_suspend_standby_uV_show, NULL),
|
||||
__ATTR(suspend_mem_mode, 0444,
|
||||
regulator_suspend_mem_mode_show, NULL),
|
||||
__ATTR(suspend_disk_mode, 0444,
|
||||
regulator_suspend_disk_mode_show, NULL),
|
||||
__ATTR(suspend_standby_mode, 0444,
|
||||
regulator_suspend_standby_mode_show, NULL),
|
||||
__ATTR(suspend_mem_state, 0444,
|
||||
regulator_suspend_mem_state_show, NULL),
|
||||
__ATTR(suspend_disk_state, 0444,
|
||||
regulator_suspend_disk_state_show, NULL),
|
||||
__ATTR(suspend_standby_state, 0444,
|
||||
regulator_suspend_standby_state_show, NULL),
|
||||
__ATTR_NULL,
|
||||
};
|
||||
|
||||
|
|
@ -1711,6 +1695,117 @@ int regulator_notifier_call_chain(struct regulator_dev *rdev,
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(regulator_notifier_call_chain);
|
||||
|
||||
/*
|
||||
* To avoid cluttering sysfs (and memory) with useless state, only
|
||||
* create attributes that can be meaningfully displayed.
|
||||
*/
|
||||
static int add_regulator_attributes(struct regulator_dev *rdev)
|
||||
{
|
||||
struct device *dev = &rdev->dev;
|
||||
struct regulator_ops *ops = rdev->desc->ops;
|
||||
int status = 0;
|
||||
|
||||
/* some attributes need specific methods to be displayed */
|
||||
if (ops->get_voltage) {
|
||||
status = device_create_file(dev, &dev_attr_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
if (ops->get_current_limit) {
|
||||
status = device_create_file(dev, &dev_attr_microamps);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
if (ops->get_mode) {
|
||||
status = device_create_file(dev, &dev_attr_opmode);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
if (ops->is_enabled) {
|
||||
status = device_create_file(dev, &dev_attr_state);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
|
||||
/* some attributes are type-specific */
|
||||
if (rdev->desc->type == REGULATOR_CURRENT) {
|
||||
status = device_create_file(dev, &dev_attr_requested_microamps);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
|
||||
/* all the other attributes exist to support constraints;
|
||||
* don't show them if there are no constraints, or if the
|
||||
* relevant supporting methods are missing.
|
||||
*/
|
||||
if (!rdev->constraints)
|
||||
return status;
|
||||
|
||||
/* constraints need specific supporting methods */
|
||||
if (ops->set_voltage) {
|
||||
status = device_create_file(dev, &dev_attr_min_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev, &dev_attr_max_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
if (ops->set_current_limit) {
|
||||
status = device_create_file(dev, &dev_attr_min_microamps);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev, &dev_attr_max_microamps);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
|
||||
/* suspend mode constraints need multiple supporting methods */
|
||||
if (!(ops->set_suspend_enable && ops->set_suspend_disable))
|
||||
return status;
|
||||
|
||||
status = device_create_file(dev, &dev_attr_suspend_standby_state);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev, &dev_attr_suspend_mem_state);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev, &dev_attr_suspend_disk_state);
|
||||
if (status < 0)
|
||||
return status;
|
||||
|
||||
if (ops->set_suspend_voltage) {
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_standby_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_mem_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_disk_microvolts);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
|
||||
if (ops->set_suspend_mode) {
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_standby_mode);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_mem_mode);
|
||||
if (status < 0)
|
||||
return status;
|
||||
status = device_create_file(dev,
|
||||
&dev_attr_suspend_disk_mode);
|
||||
if (status < 0)
|
||||
return status;
|
||||
}
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
/**
|
||||
* regulator_register - register regulator
|
||||
* @regulator: regulator source
|
||||
|
|
@ -1779,6 +1874,11 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
|
|||
|
||||
dev_set_drvdata(&rdev->dev, rdev);
|
||||
|
||||
/* add attributes supported by this regulator */
|
||||
ret = add_regulator_attributes(rdev);
|
||||
if (ret < 0)
|
||||
goto scrub;
|
||||
|
||||
/* set supply regulator if it exists */
|
||||
if (init_data->supply_regulator_dev) {
|
||||
ret = set_supply(rdev,
|
||||
|
|
|
|||
Загрузка…
Ссылка в новой задаче