1 files changed, 158 insertions, 80 deletions

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 1881fe91514..828aee9ea6a 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -13,22 +13,66 @@
 #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/cpu.h>
 
-#include <plat/omap-pm.h>
-#include <plat/omap_device.h>
+#include <asm/system_misc.h>
+
+#include "omap-pm.h"
+#include "omap_device.h"
 #include "common.h"
 
+#include "soc.h"
+#include "prcm-common.h"
 #include "voltage.h"
 #include "powerdomain.h"
 #include "clockdomain.h"
 #include "pm.h"
 #include "twl-common.h"
 
-static struct omap_device_pm_latency *pm_lats;
+#ifdef CONFIG_SUSPEND
+/*
+ * omap_pm_suspend: points to a function that does the SoC-specific
+ * suspend work
+ */
+static int (*omap_pm_suspend)(void);
+#endif
+
+#ifdef CONFIG_PM
+/**
+ * struct omap2_oscillator - Describe the board main oscillator latencies
+ * @startup_time: oscillator startup latency
+ * @shutdown_time: oscillator shutdown latency
+ */
+struct omap2_oscillator {
+	u32 startup_time;
+	u32 shutdown_time;
+};
+
+static struct omap2_oscillator oscillator = {
+	.startup_time = ULONG_MAX,
+	.shutdown_time = ULONG_MAX,
+};
 
-static int _init_omap_device(char *name)
+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)
+		return;
+
+	*tstart = oscillator.startup_time;
+	*tshut = oscillator.shutdown_time;
+}
+#endif
+
+static int __init _init_omap_device(char *name)
 {
 	struct omap_hwmod *oh;
 	struct platform_device *pdev;
@@ -38,7 +82,7 @@ static int _init_omap_device(char *name)
 		 __func__, name))
 		return -ENODEV;
 
-	pdev = omap_device_build(oh->name, 0, oh, NULL, 0, pm_lats, 0, false);
+	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;
@@ -49,7 +93,7 @@ static int _init_omap_device(char *name)
 /*
  * Build omap_devices for processors and bus.
  */
-static void omap2_init_processor_devices(void)
+static void __init omap2_init_processor_devices(void)
 {
 	_init_omap_device("mpu");
 	if (omap3_has_iva())
@@ -64,69 +108,16 @@ static void omap2_init_processor_devices(void)
 	}
 }
 
-/* Types of sleep_switch used in omap_set_pwrdm_state */
-#define FORCEWAKEUP_SWITCH	0
-#define LOWPOWERSTATE_SWITCH	1
-
-/*
- * This sets pwrdm state (other than mpu & core. Currently only ON &
- * RET are supported.
- */
-int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
+int __init omap_pm_clkdms_setup(struct clockdomain *clkdm, void *unused)
 {
-	u32 cur_state;
-	int sleep_switch = -1;
-	int ret = 0;
-	int hwsup = 0;
-
-	if (pwrdm == NULL || IS_ERR(pwrdm))
-		return -EINVAL;
-
-	while (!(pwrdm->pwrsts & (1 << state))) {
-		if (state == PWRDM_POWER_OFF)
-			return ret;
-		state--;
-	}
-
-	cur_state = pwrdm_read_next_pwrst(pwrdm);
-	if (cur_state == state)
-		return ret;
-
-	if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
-		if ((pwrdm_read_pwrst(pwrdm) > state) &&
-			(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) {
-			sleep_switch = LOWPOWERSTATE_SWITCH;
-		} else {
-			hwsup = clkdm_in_hwsup(pwrdm->pwrdm_clkdms[0]);
-			clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
-			sleep_switch = FORCEWAKEUP_SWITCH;
-		}
-	}
-
-	ret = pwrdm_set_next_pwrst(pwrdm, state);
-	if (ret) {
-		pr_err("%s: unable to set state of powerdomain: %s\n",
-		       __func__, pwrdm->name);
-		goto err;
-	}
-
-	switch (sleep_switch) {
-	case FORCEWAKEUP_SWITCH:
-		if (hwsup)
-			clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
-		else
-			clkdm_sleep(pwrdm->pwrdm_clkdms[0]);
-		break;
-	case LOWPOWERSTATE_SWITCH:
-		pwrdm_set_lowpwrstchange(pwrdm);
-		break;
-	default:
-		return ret;
-	}
-
-	pwrdm_state_switch(pwrdm);
-err:
-	return ret;
+	/* 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;
 }
 
 /*
@@ -142,7 +133,7 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
 {
 	struct voltagedomain *voltdm;
 	struct clk *clk;
-	struct opp *opp;
+	struct dev_pm_opp *opp;
 	unsigned long freq, bootup_volt;
 	struct device *dev;
 
@@ -151,7 +142,15 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
 		goto exit;
 	}
 
-	dev = omap_device_get_by_hwmod_name(oh_name);
+	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);
@@ -159,7 +158,7 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
 	}
 
 	voltdm = voltdm_lookup(vdd_name);
-	if (IS_ERR(voltdm)) {
+	if (!voltdm) {
 		pr_err("%s: unable to get vdd pointer for vdd_%s\n",
 			__func__, vdd_name);
 		goto exit;
@@ -171,20 +170,23 @@ static int __init omap2_set_init_voltage(char *vdd_name, char *clk_name,
 		goto exit;
 	}
 
-	freq = clk->rate;
+	freq = clk_get_rate(clk);
 	clk_put(clk);
 
-	opp = opp_find_freq_ceil(dev, &freq);
+	rcu_read_lock();
+	opp = dev_pm_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);
+	bootup_volt = dev_pm_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);
+		pr_err("%s: unable to find voltage corresponding to the bootup OPP for vdd_%s\n",
+		       __func__, vdd_name);
 		goto exit;
 	}
 
@@ -196,6 +198,64 @@ exit:
 	return -EINVAL;
 }
 
+#ifdef CONFIG_SUSPEND
+static int omap_pm_enter(suspend_state_t suspend_state)
+{
+	int ret = 0;
+
+	if (!omap_pm_suspend)
+		return -ENOENT; /* XXX doublecheck */
+
+	switch (suspend_state) {
+	case PM_SUSPEND_STANDBY:
+	case PM_SUSPEND_MEM:
+		ret = omap_pm_suspend();
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	return ret;
+}
+
+static int omap_pm_begin(suspend_state_t state)
+{
+	cpu_idle_poll_ctrl(true);
+	if (cpu_is_omap34xx())
+		omap_prcm_irq_prepare();
+	return 0;
+}
+
+static void omap_pm_end(void)
+{
+	cpu_idle_poll_ctrl(false);
+}
+
+static void omap_pm_finish(void)
+{
+	if (cpu_is_omap34xx())
+		omap_prcm_irq_complete();
+}
+
+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,
+	.valid		= suspend_valid_only_mem,
+};
+
+/**
+ * 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)
+{
+	omap_pm_suspend = pm_suspend;
+	suspend_set_ops(&omap_pm_ops);
+}
+#endif /* CONFIG_SUSPEND */
+
 static void __init omap3_init_voltages(void)
 {
 	if (!cpu_is_omap34xx())
@@ -215,6 +275,17 @@ static void __init omap4_init_voltages(void)
 	omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", "iva");
 }
 
+static inline void omap_init_cpufreq(void)
+{
+	struct platform_device_info devinfo = { };
+
+	if (!of_have_populated_dt())
+		devinfo.name = "omap-cpufreq";
+	else
+		devinfo.name = "cpufreq-cpu0";
+	platform_device_register_full(&devinfo);
+}
+
 static int __init omap2_common_pm_init(void)
 {
 	if (!of_have_populated_dt())
@@ -223,10 +294,15 @@ static int __init omap2_common_pm_init(void)
 
 	return 0;
 }
-postcore_initcall(omap2_common_pm_init);
+omap_postcore_initcall(omap2_common_pm_init);
 
-static int __init omap2_common_pm_late_init(void)
+int __init omap2_common_pm_late_init(void)
 {
+	if (of_have_populated_dt()) {
+		omap3_twl_init();
+		omap4_twl_init();
+	}
+
 	/* Init the voltage layer */
 	omap_pmic_late_init();
 	omap_voltage_late_init();
@@ -238,6 +314,8 @@ static int __init omap2_common_pm_late_init(void)
 	/* Smartreflex device init */
 	omap_devinit_smartreflex();
 
+	/* cpufreq dummy device instantiation */
+	omap_init_cpufreq();
+
 	return 0;
 }
-late_initcall(omap2_common_pm_late_init);