base/power/common.c

83  * dev_pm_domain_attach - Attach a device to its PM domain.
87  * The @dev may only be attached to a single PM domain. By iterating through
88  * the available alternatives we try to find a valid PM domain for the device.
94  * power management through PM domains.
99  * Returns 0 on successfully attached PM domain, or when it is found that the
100  * device doesn't need a PM domain, else a negative error code.
118  * dev_pm_domain_attach_by_id - Associate a device with one of its PM domains.
119  * @dev: The device used to lookup the PM domain.
120  * @index: The index of the PM domain.
122  * As @dev may only be attached to a single PM domain, the backend PM domain
129  * in case its device requires power management through multiple PM domains. The
133  * the power to the PM domains independently from each other.
138  * Returns the virtual created device when successfully attached to its PM
139  * domain, NULL in case @dev don't need a PM domain, else an ERR_PTR().
154  * dev_pm_domain_attach_by_name - Associate a device with one of its PM domains.
155  * @dev: The device used to lookup the PM domain.
156  * @name: The name of the PM domain.
171  * dev_pm_domain_attach_list - Associate a device with its PM domains.
172  * @dev: The device used to lookup the PM domains for.
173  * @data: The data used for attaching to the PM domains.
174  * @list: An out-parameter with an allocated list of attached PM domains.
176  * This function helps to attach a device to its multiple PM domains. The
178  * names for the PM domains that we should try to attach the device to, but it
180  * the available PM domains.
185  * Returns the number of attached PM domains or a negative error code in case of
186  * a failure. Note that, to detach the list of PM domains, the driver shall call
283  * @_list: The list of PM domains to detach.
287  * uses devm_pm_domain_attach_list() to attach the PM domains.
298  * @dev: The device used to lookup the PM domains for.
299  * @data: The data used for attaching to the PM domains.
300  * @list: An out-parameter with an allocated list of attached PM domains.
305  * Returns the number of attached PM domains or a negative error code in case of
327  * dev_pm_domain_detach - Detach a device from its PM domain.
333  * detaches @dev from its PM domain.  Typically it should be invoked during the
347  * dev_pm_domain_detach_list - Detach a list of PM domains.
348  * @list: The list of PM domains to detach.
375  * dev_pm_domain_start - Start the device through its PM domain.
379  * when it needs to start its device from the PM domain's perspective. Note
380  * that, it's assumed that the PM domain is already powered on when this
395  * dev_pm_domain_set - Set PM domain of a device.
396  * @dev: Device whose PM domain is to be set.
397  * @pd: PM domain to be set, or NULL.
399  * Sets the PM domain the device belongs to. The PM domain of a device needs
410 	     "PM domains can only be changed for unbound devices\n");  in dev_pm_domain_set()
422  * requested for a device that is attached to a PM domain. Note that, the
423  * support for performance scaling for PM domains is optional.