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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-05-08 13:06:38 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-05-08 13:06:38 +0200
commit37c147948742d34bdc3d9b491f99c77fc48daac0 (patch)
treec2481b8485e5c47af10114a97ebf5ade616ee285 /drivers/base
parent89ca3b881987f5a4be4c5dbaa7f0df12bbdde2fd (diff)
parenta0dd7b79657bd6644b914d16ce7f23468c44a7b4 (diff)
Merge back earlier 'pm-cpufreq' material.
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/power/opp.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/drivers/base/power/opp.c b/drivers/base/power/opp.c
index 25538675d59e..d9e376a6d19d 100644
--- a/drivers/base/power/opp.c
+++ b/drivers/base/power/opp.c
@@ -15,7 +15,6 @@
#include <linux/errno.h>
#include <linux/err.h>
#include <linux/slab.h>
-#include <linux/cpufreq.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/rculist.h>
@@ -596,96 +595,6 @@ int dev_pm_opp_disable(struct device *dev, unsigned long freq)
}
EXPORT_SYMBOL_GPL(dev_pm_opp_disable);
-#ifdef CONFIG_CPU_FREQ
-/**
- * dev_pm_opp_init_cpufreq_table() - create a cpufreq table for a device
- * @dev: device for which we do this operation
- * @table: Cpufreq table returned back to caller
- *
- * Generate a cpufreq table for a provided device- this assumes that the
- * opp list is already initialized and ready for usage.
- *
- * This function allocates required memory for the cpufreq table. It is
- * expected that the caller does the required maintenance such as freeing
- * the table as required.
- *
- * Returns -EINVAL for bad pointers, -ENODEV if the device is not found, -ENOMEM
- * if no memory available for the operation (table is not populated), returns 0
- * if successful and table is populated.
- *
- * WARNING: It is important for the callers to ensure refreshing their copy of
- * the table if any of the mentioned functions have been invoked in the interim.
- *
- * Locking: The internal device_opp and opp structures are RCU protected.
- * To simplify the logic, we pretend we are updater and hold relevant mutex here
- * Callers should ensure that this function is *NOT* called under RCU protection
- * or in contexts where mutex locking cannot be used.
- */
-int dev_pm_opp_init_cpufreq_table(struct device *dev,
- struct cpufreq_frequency_table **table)
-{
- struct device_opp *dev_opp;
- struct dev_pm_opp *opp;
- struct cpufreq_frequency_table *freq_table;
- int i = 0;
-
- /* Pretend as if I am an updater */
- mutex_lock(&dev_opp_list_lock);
-
- dev_opp = find_device_opp(dev);
- if (IS_ERR(dev_opp)) {
- int r = PTR_ERR(dev_opp);
- mutex_unlock(&dev_opp_list_lock);
- dev_err(dev, "%s: Device OPP not found (%d)\n", __func__, r);
- return r;
- }
-
- freq_table = kzalloc(sizeof(struct cpufreq_frequency_table) *
- (dev_pm_opp_get_opp_count(dev) + 1), GFP_KERNEL);
- if (!freq_table) {
- mutex_unlock(&dev_opp_list_lock);
- dev_warn(dev, "%s: Unable to allocate frequency table\n",
- __func__);
- return -ENOMEM;
- }
-
- list_for_each_entry(opp, &dev_opp->opp_list, node) {
- if (opp->available) {
- freq_table[i].driver_data = i;
- freq_table[i].frequency = opp->rate / 1000;
- i++;
- }
- }
- mutex_unlock(&dev_opp_list_lock);
-
- freq_table[i].driver_data = i;
- freq_table[i].frequency = CPUFREQ_TABLE_END;
-
- *table = &freq_table[0];
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_init_cpufreq_table);
-
-/**
- * dev_pm_opp_free_cpufreq_table() - free the cpufreq table
- * @dev: device for which we do this operation
- * @table: table to free
- *
- * Free up the table allocated by dev_pm_opp_init_cpufreq_table
- */
-void dev_pm_opp_free_cpufreq_table(struct device *dev,
- struct cpufreq_frequency_table **table)
-{
- if (!table)
- return;
-
- kfree(*table);
- *table = NULL;
-}
-EXPORT_SYMBOL_GPL(dev_pm_opp_free_cpufreq_table);
-#endif /* CONFIG_CPU_FREQ */
-
/**
* dev_pm_opp_get_notifier() - find notifier_head of the device with opp
* @dev: device pointer used to lookup device OPPs.