cpufreq:Add abyssplug governor

Author: Abhinav Jhanwar

arch/arm/configs/xperiago_defconfig

@@ -511,6 +511,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_LIONHEART=y
 # CONFIG_CPU_FREQ_DEFAULT_GOV_NIGHTMARE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_SAKURACTIVE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_WHEATLEY is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ABYSSPLUG is not set
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
@@ -529,6 +530,7 @@ CONFIG_CPU_FREQ_GOV_LIONHEART=y
 CONFIG_CPU_FREQ_GOV_NIGHTMARE=y
 CONFIG_CPU_FREQ_GOV_SAKURACTIVE=y
 CONFIG_CPU_FREQ_GOV_WHEATLEY=y
+CONFIG_CPU_FREQ_GOV_ABYSSPLUG=y
 CONFIG_CPU_IDLE=y
 CONFIG_CPU_IDLE_GOV_LADDER=y
 CONFIG_CPU_IDLE_GOV_MENU=y

arch/arm/configs/xperiap_defconfig

@@ -511,6 +511,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_LIONHEART=y
 # CONFIG_CPU_FREQ_DEFAULT_GOV_NIGHTMARE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_SAKURACTIVE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_WHEATLEY is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ABYSSPLUG is not set
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
@@ -529,6 +530,7 @@ CONFIG_CPU_FREQ_GOV_LIONHEART=y
 CONFIG_CPU_FREQ_GOV_NIGHTMARE=y
 CONFIG_CPU_FREQ_GOV_SAKURACTIVE=y
 CONFIG_CPU_FREQ_GOV_WHEATLEY=y
+CONFIG_CPU_FREQ_GOV_ABYSSPLUG=y
 CONFIG_CPU_IDLE=y
 CONFIG_CPU_IDLE_GOV_LADDER=y
 CONFIG_CPU_IDLE_GOV_MENU=y

arch/arm/configs/xperiasola_defconfig

@@ -511,6 +511,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_LIONHEART=y
 # CONFIG_CPU_FREQ_DEFAULT_GOV_NIGHTMARE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_SAKURACTIVE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_WHEATLEY is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ABYSSPLUG is not set
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
@@ -529,6 +530,7 @@ CONFIG_CPU_FREQ_GOV_LIONHEART=y
 CONFIG_CPU_FREQ_GOV_NIGHTMARE=y
 CONFIG_CPU_FREQ_GOV_SAKURACTIVE=y
 CONFIG_CPU_FREQ_GOV_WHEATLEY=y
+CONFIG_CPU_FREQ_GOV_ABYSSPLUG=y
 CONFIG_CPU_IDLE=y
 CONFIG_CPU_IDLE_GOV_LADDER=y
 CONFIG_CPU_IDLE_GOV_MENU=y

arch/arm/configs/xperiau_defconfig

@@ -511,6 +511,7 @@ CONFIG_CPU_FREQ_DEFAULT_GOV_LIONHEART=y
 # CONFIG_CPU_FREQ_DEFAULT_GOV_NIGHTMARE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_SAKURACTIVE is not set
 # CONFIG_CPU_FREQ_DEFAULT_GOV_WHEATLEY is not set
+# CONFIG_CPU_FREQ_DEFAULT_GOV_ABYSSPLUG is not set
 CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
 CONFIG_CPU_FREQ_GOV_POWERSAVE=y
 CONFIG_CPU_FREQ_GOV_USERSPACE=y
@@ -529,6 +530,7 @@ CONFIG_CPU_FREQ_GOV_LIONHEART=y
 CONFIG_CPU_FREQ_GOV_NIGHTMARE=y
 CONFIG_CPU_FREQ_GOV_SAKURACTIVE=y
 CONFIG_CPU_FREQ_GOV_WHEATLEY=y
+CONFIG_CPU_FREQ_GOV_ABYSSPLUG=y
 CONFIG_CPU_IDLE=y
 CONFIG_CPU_IDLE_GOV_LADDER=y
 CONFIG_CPU_IDLE_GOV_MENU=y

drivers/cpufreq/Kconfig

@@ -172,8 +172,29 @@ config CPU_FREQ_DEFAULT_GOV_WHEATLEY
 	select CPU_FREQ_GOV_PERFORMANCE
 	help
 	  Use the CPUFreq governor 'wheatley' as default.
+         
+config CPU_FREQ_DEFAULT_GOV_ABYSSPLUG
+        bool "abyssplug"
+        select CPU_FREQ_GOV_ABYSSPLUG
+        help
+	  Use the CPUFreq governor 'abyssplug' as default.
 
 endchoice
+         
+config CPU_FREQ_GOV_ABYSSPLUG
+    tristate "'abyssplug' cpufreq governor"
+    depends on CPU_FREQ
+        help
+          'abyssplug' - this driver mimics the frequency scaling behavior
+          in 'ondemand', but with several key differences. First is
+          that frequency transitions use the CPUFreq table directly,
+          instead of incrementing in a percentage of the maximum
+          available frequency. Second 'abyssplug' will offline auxillary
+          CPUs when the system is idle, and online those CPUs once the
+          system becomes busy again. This last feature is needed for
+          architectures which transition to low power states when only
+          the "master" CPU is online, or for thermally constrained
+          devices.
 
 config CPU_FREQ_GOV_WHEATLEY
 	tristate "'wheatley' cpufreq governor"

drivers/cpufreq/Makefile

@@ -17,6 +17,7 @@ obj-$(CONFIG_CPU_FREQ_GOV_LULZACTIVEQ)	+= axperiau_lulzactiveq.o
 obj-$(CONFIG_CPU_FREQ_GOV_ONDEMANDAX)	+= axperiau_ondemandax.o
 obj-$(CONFIG_CPU_FREQ_GOV_PEGASUSQ)	+= axperiau_pegasusq.o
 obj-$(CONFIG_CPU_FREQ_GOV_WHEATLEY)  	+= cpufreq_wheatley.o
+obj-$(CONFIG_CPU_FREQ_GOV_ABYSSPLUG)    += cpufreq_abyssplug.o
 obj-$(CONFIG_CPU_FREQ_GOV_SAKURACTIVE)	+= cpufreq_sakuractive.o
 obj-$(CONFIG_CPU_FREQ_GOV_NIGHTMARE)	+= cpufreq_nightmare.o
 obj-$(CONFIG_CPU_FREQ_GOV_LIONHEART)   	+= cpufreq_lionheart.o