1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2006-2008 Nokia Corporation
13  * Richard Woodruff <r-woodruff2@ti.com>
42 #include "cm-regbits-34xx.h"
43 #include "prm-regbits-34xx.h"
47 #include "omap-secure.h"
82 	/* Save the Interrupt controller context */  in omap3_core_save_context()
84 	/* Save the system control module context, padconf already save above*/  in omap3_core_save_context()
90 	/* Restore the control module context, padconf restored by h/w */  in omap3_core_restore_context()
92 	/* Restore the interrupt controller context */  in omap3_core_restore_context()
97  * FIXME: This function should be called before entering off-mode after
197 		/* No need to save context */  in omap_sram_idle()
213 	/* Enable IO-PAD and IO-CHAIN wakeups */  in omap_sram_idle()
219 	/* PER */  in omap_sram_idle()
252 	 * omap3_arm_context is the location where some ARM context  in omap_sram_idle()
286 		 * In off-mode resume path above, omap3_core_restore_context  in omap_sram_idle()
288 		 * this to non-off mode resume paths so we don't do it twice.  in omap_sram_idle()
295 	/* PER */  in omap_sram_idle()
316 		pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm);  in omap3_pm_suspend()
319 		if (omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))  in omap3_pm_suspend()
321 		if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm))  in omap3_pm_suspend()
332 		state = pwrdm_read_prev_pwrst(pwrst->pwrdm);  in omap3_pm_suspend()
333 		if (state > pwrst->next_state) {  in omap3_pm_suspend()
335 				pwrst->pwrdm->name, pwrst->next_state);  in omap3_pm_suspend()
336 			ret = -1;  in omap3_pm_suspend()
338 		omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);  in omap3_pm_suspend()
370 				pwrst->pwrdm == core_pwrdm &&  in omap3_pm_off_mode_enable()
372 			pwrst->next_state = PWRDM_POWER_RET;  in omap3_pm_off_mode_enable()
376 			pwrst->next_state = state;  in omap3_pm_off_mode_enable()
378 		omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);  in omap3_pm_off_mode_enable()
387 		if (pwrst->pwrdm == pwrdm)  in omap3_pm_get_suspend_state()
388 			return pwrst->next_state;  in omap3_pm_get_suspend_state()
390 	return -EINVAL;  in omap3_pm_get_suspend_state()
398 		if (pwrst->pwrdm == pwrdm) {  in omap3_pm_set_suspend_state()
399 			pwrst->next_state = state;  in omap3_pm_set_suspend_state()
403 	return -EINVAL;  in omap3_pm_set_suspend_state()
410 	if (!pwrdm->pwrsts)  in pwrdms_setup()
415 		return -ENOMEM;  in pwrdms_setup()
416 	pwrst->pwrdm = pwrdm;  in pwrdms_setup()
419 		pwrst->next_state = PWRDM_POWER_OFF;  in pwrdms_setup()
421 		pwrst->next_state = PWRDM_POWER_RET;  in pwrdms_setup()
423 	list_add(&pwrst->node, &pwrst_list);  in pwrdms_setup()
428 	return omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);  in pwrdms_setup()
435  * - omap3_do_wfi for erratum i581 WA,
460 	np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle");  in omap3_pm_check_pmic()
462 		np = of_find_compatible_node(NULL, NULL, "ti,twl4030-power-idle-osc-off");  in omap3_pm_check_pmic()
518 		ret = -EINVAL;  in omap3_pm_init()
537 	 * RTA is disabled during initialization as per erratum i608  in omap3_pm_init()
546 	 * not correctly reset when the PER powerdomain comes back  in omap3_pm_init()
548 	 * See OMAP36xx Erratum i582 "PER Domain reset issue after  in omap3_pm_init()
549 	 * Domain-OFF/OSWR Wakeup".  This wakeup dependency is not a  in omap3_pm_init()
550 	 * complete workaround.  The kernel must also prevent the PER  in omap3_pm_init()
552 	 * powerdomain is not going to OSWR/OFF.  And if PER last  in omap3_pm_init()
555 	 * self-test using their loopback tests; if that fails, those  in omap3_pm_init()
556 	 * devices are unusable until the PER/CORE can complete a transition  in omap3_pm_init()
559 	 * XXX Technically this workaround is only needed if off-mode  in omap3_pm_init()
570 			pr_err("Memory allocation failed when allocating for secure sram context\n");  in omap3_pm_init()
584 		list_del(&pwrst->node);  in omap3_pm_init()