1 files changed, 0 insertions, 254 deletions
diff --git a/ANDROID_3.4.5/drivers/base/power/domain_governor.c b/ANDROID_3.4.5/drivers/base/power/domain_governor.c
deleted file mode 100644
index 28dee305..00000000
--- a/ANDROID_3.4.5/drivers/base/power/domain_governor.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * drivers/base/power/domain_governor.c - Governors for device PM domains.
- *
- * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
- *
- * This file is released under the GPLv2.
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/pm_domain.h>
-#include <linux/pm_qos.h>
-#include <linux/hrtimer.h>
-
-#ifdef CONFIG_PM_RUNTIME
-
-static int dev_update_qos_constraint(struct device *dev, void *data)
-{
-	s64 *constraint_ns_p = data;
-	s32 constraint_ns = -1;
-
-	if (dev->power.subsys_data && dev->power.subsys_data->domain_data)
-		constraint_ns = dev_gpd_data(dev)->td.effective_constraint_ns;
-
-	if (constraint_ns < 0) {
-		constraint_ns = dev_pm_qos_read_value(dev);
-		constraint_ns *= NSEC_PER_USEC;
-	}
-	if (constraint_ns == 0)
-		return 0;
-
-	/*
-	 * constraint_ns cannot be negative here, because the device has been
-	 * suspended.
-	 */
-	if (constraint_ns < *constraint_ns_p || *constraint_ns_p == 0)
-		*constraint_ns_p = constraint_ns;
-
-	return 0;
-}
-
-/**
- * default_stop_ok - Default PM domain governor routine for stopping devices.
- * @dev: Device to check.
- */
-bool default_stop_ok(struct device *dev)
-{
-	struct gpd_timing_data *td = &dev_gpd_data(dev)->td;
-	unsigned long flags;
-	s64 constraint_ns;
-
-	dev_dbg(dev, "%s()\n", __func__);
-
-	spin_lock_irqsave(&dev->power.lock, flags);
-
-	if (!td->constraint_changed) {
-		bool ret = td->cached_stop_ok;
-
-		spin_unlock_irqrestore(&dev->power.lock, flags);
-		return ret;
-	}
-	td->constraint_changed = false;
-	td->cached_stop_ok = false;
-	td->effective_constraint_ns = -1;
-	constraint_ns = __dev_pm_qos_read_value(dev);
-
-	spin_unlock_irqrestore(&dev->power.lock, flags);
-
-	if (constraint_ns < 0)
-		return false;
-
-	constraint_ns *= NSEC_PER_USEC;
-	/*
-	 * We can walk the children without any additional locking, because
-	 * they all have been suspended at this point and their
-	 * effective_constraint_ns fields won't be modified in parallel with us.
-	 */
-	if (!dev->power.ignore_children)
-		device_for_each_child(dev, &constraint_ns,
-				      dev_update_qos_constraint);
-
-	if (constraint_ns > 0) {
-		constraint_ns -= td->start_latency_ns;
-		if (constraint_ns == 0)
-			return false;
-	}
-	td->effective_constraint_ns = constraint_ns;
-	td->cached_stop_ok = constraint_ns > td->stop_latency_ns ||
-				constraint_ns == 0;
-	/*
-	 * The children have been suspended already, so we don't need to take
-	 * their stop latencies into account here.
-	 */
-	return td->cached_stop_ok;
-}
-
-/**
- * default_power_down_ok - Default generic PM domain power off governor routine.
- * @pd: PM domain to check.
- *
- * This routine must be executed under the PM domain's lock.
- */
-static bool default_power_down_ok(struct dev_pm_domain *pd)
-{
-	struct generic_pm_domain *genpd = pd_to_genpd(pd);
-	struct gpd_link *link;
-	struct pm_domain_data *pdd;
-	s64 min_off_time_ns;
-	s64 off_on_time_ns;
-
-	if (genpd->max_off_time_changed) {
-		struct gpd_link *link;
-
-		/*
-		 * We have to invalidate the cached results for the masters, so
-		 * use the observation that default_power_down_ok() is not
-		 * going to be called for any master until this instance
-		 * returns.
-		 */
-		list_for_each_entry(link, &genpd->slave_links, slave_node)
-			link->master->max_off_time_changed = true;
-
-		genpd->max_off_time_changed = false;
-		genpd->cached_power_down_ok = false;
-		genpd->max_off_time_ns = -1;
-	} else {
-		return genpd->cached_power_down_ok;
-	}
-
-	off_on_time_ns = genpd->power_off_latency_ns +
-				genpd->power_on_latency_ns;
-	/*
-	 * It doesn't make sense to remove power from the domain if saving
-	 * the state of all devices in it and the power off/power on operations
-	 * take too much time.
-	 *
-	 * All devices in this domain have been stopped already at this point.
-	 */
-	list_for_each_entry(pdd, &genpd->dev_list, list_node) {
-		if (pdd->dev->driver)
-			off_on_time_ns +=
-				to_gpd_data(pdd)->td.save_state_latency_ns;
-	}
-
-	min_off_time_ns = -1;
-	/*
-	 * Check if subdomains can be off for enough time.
-	 *
-	 * All subdomains have been powered off already at this point.
-	 */
-	list_for_each_entry(link, &genpd->master_links, master_node) {
-		struct generic_pm_domain *sd = link->slave;
-		s64 sd_max_off_ns = sd->max_off_time_ns;
-
-		if (sd_max_off_ns < 0)
-			continue;
-
-		/*
-		 * Check if the subdomain is allowed to be off long enough for
-		 * the current domain to turn off and on (that's how much time
-		 * it will have to wait worst case).
-		 */
-		if (sd_max_off_ns <= off_on_time_ns)
-			return false;
-
-		if (min_off_time_ns > sd_max_off_ns || min_off_time_ns < 0)
-			min_off_time_ns = sd_max_off_ns;
-	}
-
-	/*
-	 * Check if the devices in the domain can be off enough time.
-	 */
-	list_for_each_entry(pdd, &genpd->dev_list, list_node) {
-		struct gpd_timing_data *td;
-		s64 constraint_ns;
-
-		if (!pdd->dev->driver)
-			continue;
-
-		/*
-		 * Check if the device is allowed to be off long enough for the
-		 * domain to turn off and on (that's how much time it will
-		 * have to wait worst case).
-		 */
-		td = &to_gpd_data(pdd)->td;
-		constraint_ns = td->effective_constraint_ns;
-		/* default_stop_ok() need not be called before us. */
-		if (constraint_ns < 0) {
-			constraint_ns = dev_pm_qos_read_value(pdd->dev);
-			constraint_ns *= NSEC_PER_USEC;
-		}
-		if (constraint_ns == 0)
-			continue;
-
-		/*
-		 * constraint_ns cannot be negative here, because the device has
-		 * been suspended.
-		 */
-		constraint_ns -= td->restore_state_latency_ns;
-		if (constraint_ns <= off_on_time_ns)
-			return false;
-
-		if (min_off_time_ns > constraint_ns || min_off_time_ns < 0)
-			min_off_time_ns = constraint_ns;
-	}
-
-	genpd->cached_power_down_ok = true;
-
-	/*
-	 * If the computed minimum device off time is negative, there are no
-	 * latency constraints, so the domain can spend arbitrary time in the
-	 * "off" state.
-	 */
-	if (min_off_time_ns < 0)
-		return true;
-
-	/*
-	 * The difference between the computed minimum subdomain or device off
-	 * time and the time needed to turn the domain on is the maximum
-	 * theoretical time this domain can spend in the "off" state.
-	 */
-	genpd->max_off_time_ns = min_off_time_ns - genpd->power_on_latency_ns;
-	return true;
-}
-
-static bool always_on_power_down_ok(struct dev_pm_domain *domain)
-{
-	return false;
-}
-
-#else /* !CONFIG_PM_RUNTIME */
-
-bool default_stop_ok(struct device *dev)
-{
-	return false;
-}
-
-#define default_power_down_ok	NULL
-#define always_on_power_down_ok	NULL
-
-#endif /* !CONFIG_PM_RUNTIME */
-
-struct dev_power_governor simple_qos_governor = {
-	.stop_ok = default_stop_ok,
-	.power_down_ok = default_power_down_ok,
-};
-
-/**
- * pm_genpd_gov_always_on - A governor implementing an always-on policy
- */
-struct dev_power_governor pm_domain_always_on_gov = {
-	.power_down_ok = always_on_power_down_ok,
-	.stop_ok = default_stop_ok,
-};