1 files changed, 41 insertions, 192 deletions

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index e742118fcfd2..700869c9eae1 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -1,26 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * pm.c - Common OMAP2+ power management-related code
  *
  * Copyright (C) 2010 Texas Instruments, Inc.
  * Copyright (C) 2010 Nokia Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/err.h>
-#include <linux/opp.h>
+#include <linux/pm_opp.h>
 #include <linux/export.h>
 #include <linux/suspend.h>
+#include <linux/clk.h>
 #include <linux/cpu.h>
 
 #include <asm/system_misc.h>
 
-#include "omap-pm.h"
 #include "omap_device.h"
 #include "common.h"
 
@@ -30,13 +27,16 @@
 #include "powerdomain.h"
 #include "clockdomain.h"
 #include "pm.h"
-#include "twl-common.h"
 
+u32 enable_off_mode;
+
+#ifdef CONFIG_SUSPEND
 /*
  * omap_pm_suspend: points to a function that does the SoC-specific
  * suspend work
  */
-int (*omap_pm_suspend)(void);
+static int (*omap_pm_suspend)(void);
+#endif
 
 #ifdef CONFIG_PM
 /**
@@ -54,12 +54,6 @@ static struct omap2_oscillator oscillator = {
 	.shutdown_time = ULONG_MAX,
 };
 
-void omap_pm_setup_oscillator(u32 tstart, u32 tshut)
-{
-	oscillator.startup_time = tstart;
-	oscillator.shutdown_time = tshut;
-}
-
 void omap_pm_get_oscillator(u32 *tstart, u32 *tshut)
 {
 	if (!tstart || !tshut)
@@ -70,132 +64,12 @@ void omap_pm_get_oscillator(u32 *tstart, u32 *tshut)
 }
 #endif
 
-static int __init _init_omap_device(char *name)
+int omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
 {
-	struct omap_hwmod *oh;
-	struct platform_device *pdev;
-
-	oh = omap_hwmod_lookup(name);
-	if (WARN(!oh, "%s: could not find omap_hwmod for %s\n",
-		 __func__, name))
-		return -ENODEV;
-
-	pdev = omap_device_build(oh->name, 0, oh, NULL, 0);
-	if (WARN(IS_ERR(pdev), "%s: could not build omap_device for %s\n",
-		 __func__, name))
-		return -ENODEV;
-
+	clkdm_allow_idle(clkdm);
 	return 0;
 }
 
-/*
- * Build omap_devices for processors and bus.
- */
-static void __init omap2_init_processor_devices(void)
-{
-	_init_omap_device("mpu");
-	if (omap3_has_iva())
-		_init_omap_device("iva");
-
-	if (cpu_is_omap44xx()) {
-		_init_omap_device("l3_main_1");
-		_init_omap_device("dsp");
-		_init_omap_device("iva");
-	} else {
-		_init_omap_device("l3_main");
-	}
-}
-
-int __init omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
-{
-	/* XXX The usecount test is racy */
-	if ((clkdm->flags & CLKDM_CAN_ENABLE_AUTO) &&
-	    !(clkdm->flags & CLKDM_MISSING_IDLE_REPORTING))
-		clkdm_allow_idle(clkdm);
-	else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
-		 clkdm->usecount == 0)
-		clkdm_sleep(clkdm);
-	return 0;
-}
-
-/*
- * This API is to be called during init to set the various voltage
- * domains to the voltage as per the opp table. Typically we boot up
- * at the nominal voltage. So this function finds out the rate of
- * the clock associated with the voltage domain, finds out the correct
- * opp entry and sets the voltage domain to the voltage specified
- * in the opp entry
- */
-static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
-					 const char *oh_name)
-{
-	struct voltagedomain *voltdm;
-	struct clk *clk;
-	struct opp *opp;
-	unsigned long freq, bootup_volt;
-	struct device *dev;
-
-	if (!vdd_name || !clk_name || !oh_name) {
-		pr_err("%s: invalid parameters\n", __func__);
-		goto exit;
-	}
-
-	if (!strncmp(oh_name, "mpu", 3))
-		/* 
-		 * All current OMAPs share voltage rail and clock
-		 * source, so CPU0 is used to represent the MPU-SS.
-		 */
-		dev = get_cpu_device(0);
-	else
-		dev = omap_device_get_by_hwmod_name(oh_name);
-
-	if (IS_ERR(dev)) {
-		pr_err("%s: Unable to get dev pointer for hwmod %s\n",
-			__func__, oh_name);
-		goto exit;
-	}
-
-	voltdm = voltdm_lookup(vdd_name);
-	if (!voltdm) {
-		pr_err("%s: unable to get vdd pointer for vdd_%s\n",
-			__func__, vdd_name);
-		goto exit;
-	}
-
-	clk =  clk_get(NULL, clk_name);
-	if (IS_ERR(clk)) {
-		pr_err("%s: unable to get clk %s\n", __func__, clk_name);
-		goto exit;
-	}
-
-	freq = clk_get_rate(clk);
-	clk_put(clk);
-
-	rcu_read_lock();
-	opp = opp_find_freq_ceil(dev, &freq);
-	if (IS_ERR(opp)) {
-		rcu_read_unlock();
-		pr_err("%s: unable to find boot up OPP for vdd_%s\n",
-			__func__, vdd_name);
-		goto exit;
-	}
-
-	bootup_volt = opp_get_voltage(opp);
-	rcu_read_unlock();
-	if (!bootup_volt) {
-		pr_err("%s: unable to find voltage corresponding to the bootup OPP for vdd_%s\n",
-		       __func__, vdd_name);
-		goto exit;
-	}
-
-	voltdm_scale(voltdm, bootup_volt);
-	return 0;
-
-exit:
-	pr_err("%s: unable to set vdd_%s\n", __func__, vdd_name);
-	return -EINVAL;
-}
-
 #ifdef CONFIG_SUSPEND
 static int omap_pm_enter(suspend_state_t suspend_state)
 {
@@ -205,7 +79,6 @@ static int omap_pm_enter(suspend_state_t suspend_state)
 		return -ENOENT; /* XXX doublecheck */
 
 	switch (suspend_state) {
-	case PM_SUSPEND_STANDBY:
 	case PM_SUSPEND_MEM:
 		ret = omap_pm_suspend();
 		break;
@@ -219,7 +92,7 @@ static int omap_pm_enter(suspend_state_t suspend_state)
 static int omap_pm_begin(suspend_state_t state)
 {
 	cpu_idle_poll_ctrl(true);
-	if (cpu_is_omap34xx())
+	if (soc_is_omap34xx())
 		omap_prcm_irq_prepare();
 	return 0;
 }
@@ -229,9 +102,9 @@ static void omap_pm_end(void)
 	cpu_idle_poll_ctrl(false);
 }
 
-static void omap_pm_finish(void)
+static void omap_pm_wake(void)
 {
-	if (cpu_is_omap34xx())
+	if (soc_is_omap34xx())
 		omap_prcm_irq_complete();
 }
 
@@ -239,74 +112,50 @@ static const struct platform_suspend_ops omap_pm_ops = {
 	.begin		= omap_pm_begin,
 	.end		= omap_pm_end,
 	.enter		= omap_pm_enter,
-	.finish		= omap_pm_finish,
+	.wake		= omap_pm_wake,
 	.valid		= suspend_valid_only_mem,
 };
 
-#endif /* CONFIG_SUSPEND */
-
-static void __init omap3_init_voltages(void)
-{
-	if (!cpu_is_omap34xx())
-		return;
-
-	omap2_set_init_voltage("mpu_iva", "dpll1_ck", "mpu");
-	omap2_set_init_voltage("core", "l3_ick", "l3_main");
-}
-
-static void __init omap4_init_voltages(void)
-{
-	if (!cpu_is_omap44xx())
-		return;
-
-	omap2_set_init_voltage("mpu", "dpll_mpu_ck", "mpu");
-	omap2_set_init_voltage("core", "l3_div_ck", "l3_main_1");
-	omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
-}
-
-static inline void omap_init_cpufreq(void)
+/**
+ * omap_common_suspend_init - Set common suspend routines for OMAP SoCs
+ * @pm_suspend: function pointer to SoC specific suspend function
+ */
+void omap_common_suspend_init(void *pm_suspend)
 {
-	struct platform_device_info devinfo = { .name = "omap-cpufreq", };
-	platform_device_register_full(&devinfo);
+	omap_pm_suspend = pm_suspend;
+	suspend_set_ops(&omap_pm_ops);
 }
+#endif /* CONFIG_SUSPEND */
 
-static int __init omap2_common_pm_init(void)
+int __maybe_unused omap_pm_nop_init(void)
 {
-	if (!of_have_populated_dt())
-		omap2_init_processor_devices();
-	omap_pm_if_init();
-
 	return 0;
 }
-omap_postcore_initcall(omap2_common_pm_init);
 
-int __init omap2_common_pm_late_init(void)
+int (*omap_pm_soc_init)(void);
+
+static int __init omap2_common_pm_late_init(void)
 {
-	/*
-	 * In the case of DT, the PMIC and SR initialization will be done using
-	 * a completely different mechanism.
-	 * Disable this part if a DT blob is available.
-	 */
-	if (!of_have_populated_dt()) {
+	int error;
 
-		/* Init the voltage layer */
-		omap_pmic_late_init();
-		omap_voltage_late_init();
+	if (!omap_pm_soc_init)
+		return 0;
 
-		/* Initialize the voltages */
-		omap3_init_voltages();
-		omap4_init_voltages();
+	/* Init the voltage layer */
+	omap3_twl_init();
+	omap4_twl_init();
+	omap4_cpcap_init();
+	omap_voltage_late_init();
 
-		/* Smartreflex device init */
-		omap_devinit_smartreflex();
+	/* Smartreflex device init */
+	omap_devinit_smartreflex();
 
-		/* cpufreq dummy device instantiation */
-		omap_init_cpufreq();
-	}
+	error = omap_pm_soc_init();
+	if (error)
+		pr_warn("%s: pm soc init failed: %i\n", __func__, error);
 
-#ifdef CONFIG_SUSPEND
-	suspend_set_ops(&omap_pm_ops);
-#endif
+	omap2_clk_enable_autoidle_all();
 
 	return 0;
 }
+omap_late_initcall(omap2_common_pm_late_init);