arm/mach-keystone/psc.c

4  * (C) Copyright 2012-2014
7  * SPDX-License-Identifier:     GPL-2.0+
17  * psc_delay() - delay for psc
28  * psc_wait() - Wait for end of transitional state
35  * Return: 0 when the domain is free. Returns -1 if a timeout occurred waiting
44 	 * Do nothing if the power domain is in transition. This should never  in psc_wait()
60 		return -1;  in psc_wait()
66  * psc_get_domain_num() - Get the domain number
73 	/* Get the power domain associated with the module number */  in psc_get_domain_num()
81  * psc_set_state() - powers up/down a module
85  * Powers up/down the requested module and the associated power domain if
86  * required. No action is taken it the module is already powered up/down.
88  * be left in the power on state. Multiple modules can exist in a power
91  * Return: 0 on success, -1 if the module can't be powered up, or if there is a
104 	 * Get the power domain associated with the module number, and reset  in psc_set_state()
111 	/* Wait for the status of the domain/module to be non-transitional */  in psc_set_state()
113 		return -1;  in psc_set_state()
119 	 * Set the next state of the power domain to on. It's OK if the domain  in psc_set_state()
120 	 * is always on. This code will not ever power down a domain, so no  in psc_set_state()
121 	 * change is made if the new state is power down.  in psc_set_state()
146  * psc_enable_module() - power up a module
149  * Powers up the requested module and the associated power domain
150  * if required. No action is taken it the module is already powered up.
152  * Return: 0 on success, -1 if the module can't be powered up, or
169  * psc_disable_module() - Power down a module
172  * Return: 0 on success, -1 on failure or timeout.
189  * psc_set_reset_iso() - Set the reset isolation bit in mdctl
217  * psc_disable_domain() - Disable a power domain
238  * psc_module_keep_in_reset_enabled() - Keep module in enabled,in-reset state
285 		timeout--;  in psc_module_keep_in_reset_enabled()
291 		return -ETIMEDOUT;  in psc_module_keep_in_reset_enabled()
297  * psc_module_release_from_reset() - Release the module from reset
314 	/* Should be set to 1 to de-assert Local reset */  in psc_module_release_from_reset()
329 		timeout--;  in psc_module_release_from_reset()
335 		return -ETIMEDOUT;  in psc_module_release_from_reset()