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authorLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 23:41:48 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2013-11-13 23:41:48 -0500
commitf9300eaaac1ca300083ad41937923a90cc3a2394 (patch)
tree724b72ad729a8b85c09d2d54f8ca7d8ba22d774f /drivers/devfreq/devfreq.c
parent7f2dc5c4bcbff035b0d03f7aa78a182664b21e47 (diff)
parentfaddf2f5d278f1656e9444961bdd8d9db4deb5bf (diff)
Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael J Wysocki: - New power capping framework and the the Intel Running Average Power Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan. - Addition of the in-kernel switching feature to the arm_big_little cpufreq driver from Viresh Kumar and Nicolas Pitre. - cpufreq support for iMac G5 from Aaro Koskinen. - Baytrail processors support for intel_pstate from Dirk Brandewie. - cpufreq support for Midway/ECX-2000 from Mark Langsdorf. - ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha. - ACPI power management support for the I2C and SPI bus types from Mika Westerberg and Lv Zheng. - cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat, Stratos Karafotis, Xiaoguang Chen, Lan Tianyu. - cpufreq drivers updates (mostly fixes and cleanups) from Viresh Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev. - intel_pstate updates from Dirk Brandewie and Adrian Huang. - ACPICA update to version 20130927 includig fixes and cleanups and some reduction of divergences between the ACPICA code in the kernel and ACPICA upstream in order to improve the automatic ACPICA patch generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh Bhat, Bjorn Helgaas, David E Box. - ACPI IPMI driver fixes and cleanups from Lv Zheng. - ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang Yanfei, Rafael J Wysocki. - Conversion of the ACPI AC driver to the platform bus type and multiple driver fixes and cleanups related to ACPI from Zhang Rui. - ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu, Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki. - Fixes and cleanups and new blacklist entries related to the ACPI video support from Aaron Lu, Felipe Contreras, Lennart Poettering, Kirill Tkhai. - cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi. - cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han, Bartlomiej Zolnierkiewicz, Prarit Bhargava. - devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe. - Operation Performance Points (OPP) core updates from Nishanth Menon. - Runtime power management core fix from Rafael J Wysocki and update from Ulf Hansson. - Hibernation fixes from Aaron Lu and Rafael J Wysocki. - Device suspend/resume lockup detection mechanism from Benoit Goby. - Removal of unused proc directories created for various ACPI drivers from Lan Tianyu. - ACPI LPSS driver fix and new device IDs for the ACPI platform scan handler from Heikki Krogerus and Jarkko Nikula. - New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa. - Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter, Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause, Liu Chuansheng. - Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding, Jean-Christophe Plagniol-Villard. * tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits) cpufreq: conservative: fix requested_freq reduction issue ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines PM / runtime: Use pm_runtime_put_sync() in __device_release_driver() ACPI / event: remove unneeded NULL pointer check Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1" ACPI / video: Quirk initial backlight level 0 ACPI / video: Fix initial level validity test intel_pstate: skip the driver if ACPI has power mgmt option PM / hibernate: Avoid overflow in hibernate_preallocate_memory() ACPI / hotplug: Do not execute "insert in progress" _OST ACPI / hotplug: Carry out PCI root eject directly ACPI / hotplug: Merge device hot-removal routines ACPI / hotplug: Make acpi_bus_hot_remove_device() internal ACPI / hotplug: Simplify device ejection routines ACPI / hotplug: Fix handle_root_bridge_removal() ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug ACPI / scan: Start matching drivers after trying scan handlers ACPI: Remove acpi_pci_slot_init() headers from internal.h ACPI / blacklist: fix name of ThinkPad Edge E530 PowerCap: Fix build error with option -Werror=format-security ... Conflicts: arch/arm/mach-omap2/opp.c drivers/Kconfig drivers/spi/spi.c
Diffstat (limited to 'drivers/devfreq/devfreq.c')
-rw-r--r--drivers/devfreq/devfreq.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index c99c00d35d34..a0b2f7e0eedb 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -18,7 +18,7 @@
18#include <linux/module.h> 18#include <linux/module.h>
19#include <linux/slab.h> 19#include <linux/slab.h>
20#include <linux/stat.h> 20#include <linux/stat.h>
21#include <linux/opp.h> 21#include <linux/pm_opp.h>
22#include <linux/devfreq.h> 22#include <linux/devfreq.h>
23#include <linux/workqueue.h> 23#include <linux/workqueue.h>
24#include <linux/platform_device.h> 24#include <linux/platform_device.h>
@@ -902,13 +902,13 @@ static ssize_t available_frequencies_show(struct device *d,
902{ 902{
903 struct devfreq *df = to_devfreq(d); 903 struct devfreq *df = to_devfreq(d);
904 struct device *dev = df->dev.parent; 904 struct device *dev = df->dev.parent;
905 struct opp *opp; 905 struct dev_pm_opp *opp;
906 ssize_t count = 0; 906 ssize_t count = 0;
907 unsigned long freq = 0; 907 unsigned long freq = 0;
908 908
909 rcu_read_lock(); 909 rcu_read_lock();
910 do { 910 do {
911 opp = opp_find_freq_ceil(dev, &freq); 911 opp = dev_pm_opp_find_freq_ceil(dev, &freq);
912 if (IS_ERR(opp)) 912 if (IS_ERR(opp))
913 break; 913 break;
914 914
@@ -993,10 +993,10 @@ static int __init devfreq_init(void)
993 } 993 }
994 994
995 devfreq_wq = create_freezable_workqueue("devfreq_wq"); 995 devfreq_wq = create_freezable_workqueue("devfreq_wq");
996 if (IS_ERR(devfreq_wq)) { 996 if (!devfreq_wq) {
997 class_destroy(devfreq_class); 997 class_destroy(devfreq_class);
998 pr_err("%s: couldn't create workqueue\n", __FILE__); 998 pr_err("%s: couldn't create workqueue\n", __FILE__);
999 return PTR_ERR(devfreq_wq); 999 return -ENOMEM;
1000 } 1000 }
1001 devfreq_class->dev_groups = devfreq_groups; 1001 devfreq_class->dev_groups = devfreq_groups;
1002 1002
@@ -1029,25 +1029,26 @@ module_exit(devfreq_exit);
1029 * under the locked area. The pointer returned must be used prior to unlocking 1029 * under the locked area. The pointer returned must be used prior to unlocking
1030 * with rcu_read_unlock() to maintain the integrity of the pointer. 1030 * with rcu_read_unlock() to maintain the integrity of the pointer.
1031 */ 1031 */
1032struct opp *devfreq_recommended_opp(struct device *dev, unsigned long *freq, 1032struct dev_pm_opp *devfreq_recommended_opp(struct device *dev,
1033 u32 flags) 1033 unsigned long *freq,
1034 u32 flags)
1034{ 1035{
1035 struct opp *opp; 1036 struct dev_pm_opp *opp;
1036 1037
1037 if (flags & DEVFREQ_FLAG_LEAST_UPPER_BOUND) { 1038 if (flags & DEVFREQ_FLAG_LEAST_UPPER_BOUND) {
1038 /* The freq is an upper bound. opp should be lower */ 1039 /* The freq is an upper bound. opp should be lower */
1039 opp = opp_find_freq_floor(dev, freq); 1040 opp = dev_pm_opp_find_freq_floor(dev, freq);
1040 1041
1041 /* If not available, use the closest opp */ 1042 /* If not available, use the closest opp */
1042 if (opp == ERR_PTR(-ERANGE)) 1043 if (opp == ERR_PTR(-ERANGE))
1043 opp = opp_find_freq_ceil(dev, freq); 1044 opp = dev_pm_opp_find_freq_ceil(dev, freq);
1044 } else { 1045 } else {
1045 /* The freq is an lower bound. opp should be higher */ 1046 /* The freq is an lower bound. opp should be higher */
1046 opp = opp_find_freq_ceil(dev, freq); 1047 opp = dev_pm_opp_find_freq_ceil(dev, freq);
1047 1048
1048 /* If not available, use the closest opp */ 1049 /* If not available, use the closest opp */
1049 if (opp == ERR_PTR(-ERANGE)) 1050 if (opp == ERR_PTR(-ERANGE))
1050 opp = opp_find_freq_floor(dev, freq); 1051 opp = dev_pm_opp_find_freq_floor(dev, freq);
1051 } 1052 }
1052 1053
1053 return opp; 1054 return opp;
@@ -1066,7 +1067,7 @@ int devfreq_register_opp_notifier(struct device *dev, struct devfreq *devfreq)
1066 int ret = 0; 1067 int ret = 0;
1067 1068
1068 rcu_read_lock(); 1069 rcu_read_lock();
1069 nh = opp_get_notifier(dev); 1070 nh = dev_pm_opp_get_notifier(dev);
1070 if (IS_ERR(nh)) 1071 if (IS_ERR(nh))
1071 ret = PTR_ERR(nh); 1072 ret = PTR_ERR(nh);
1072 rcu_read_unlock(); 1073 rcu_read_unlock();
@@ -1092,7 +1093,7 @@ int devfreq_unregister_opp_notifier(struct device *dev, struct devfreq *devfreq)
1092 int ret = 0; 1093 int ret = 0;
1093 1094
1094 rcu_read_lock(); 1095 rcu_read_lock();
1095 nh = opp_get_notifier(dev); 1096 nh = dev_pm_opp_get_notifier(dev);
1096 if (IS_ERR(nh)) 1097 if (IS_ERR(nh))
1097 ret = PTR_ERR(nh); 1098 ret = PTR_ERR(nh);
1098 rcu_read_unlock(); 1099 rcu_read_unlock();