menuconfig PM_DEVFREQ
	bool "Generic Dynamic Voltage and Frequency Scaling (DVFS) support"
	help
	  A device may have a list of frequencies and voltages available.
	  devfreq, a generic DVFS framework can be registered for a device
	  in order to let the governor provided to devfreq choose an
	  operating frequency based on the device driver's policy.

	  Each device may have its own governor and policy. Devfreq can
	  reevaluate the device state periodically and/or based on the
	  notification to "nb", a notifier block, of devfreq.

	  Like some CPUs with CPUfreq, a device may have multiple clocks.
	  However, because the clock frequencies of a single device are
	  determined by the single device's state, an instance of devfreq
	  is attached to a single device and returns a "representative"
	  clock frequency of the device, which is also attached
	  to a device by 1-to-1. The device registering devfreq takes the
	  responsibility to "interpret" the representative frequency and
	  to set its every clock accordingly with the "target" callback
	  given to devfreq.

	  When OPP is used with the devfreq device, it is recommended to
	  register devfreq's nb to the OPP's notifier head.  If OPP is
	  used with the devfreq device, you may use OPP helper
	  functions defined in devfreq.h.

if PM_DEVFREQ

comment "DEVFREQ Governors"

config DEVFREQ_GOV_SIMPLE_ONDEMAND
	tristate "Simple Ondemand"
	help
	  Chooses frequency based on the recent load on the device. Works
	  similar as ONDEMAND governor of CPUFREQ does. A device with
	  Simple-Ondemand should be able to provide busy/total counter
	  values that imply the usage rate. A device may provide tuned
	  values to the governor with data field at devfreq_add_device().

config DEVFREQ_GOV_PERFORMANCE
	tristate "Performance"
	help
	  Sets the frequency at the maximum available frequency.
	  This governor always returns UINT_MAX as frequency so that
	  the DEVFREQ framework returns the highest frequency available
	  at any time.

config DEVFREQ_GOV_POWERSAVE
	tristate "Powersave"
	help
	  Sets the frequency at the minimum available frequency.
	  This governor always returns 0 as frequency so that
	  the DEVFREQ framework returns the lowest frequency available
	  at any time.

config DEVFREQ_GOV_USERSPACE
	tristate "Userspace"
	help
	  Sets the frequency at the user specified one.
	  This governor returns the user configured frequency if there
	  has been an input to /sys/devices/.../power/devfreq_set_freq.
	  Otherwise, the governor does not change the frequnecy
	  given at the initialization.

config DEVFREQ_GOV_CPUFREQ
	tristate "CPUfreq"
	depends on CPU_FREQ
	help
	  Chooses frequency based on the online CPUs' current frequency and a
	  CPU frequency to device frequency mapping table(s). This governor
	  can be useful for controlling devices such as DDR, cache, CCI, etc.

config DEVFREQ_GOV_MSM_ADRENO_TZ
	tristate "MSM Adreno Trustzone"
	depends on MSM_KGSL && MSM_SCM
	help
	  Trustzone based governor for the Adreno GPU.
	  Sets the frequency using a "on-demand" algorithm.
	  This governor is unlikely to be useful for other devices.

config MSM_BIMC_BWMON
	tristate "MSM BIMC Bandwidth monitor hardware"
	depends on ARCH_MSM
	help
	  The BIMC Bandwidth monitor hardware allows for monitoring the
	  traffic coming from each master port connected to the BIMC. It also
	  has the capability to raise an IRQ when the count exceeds a
	  programmable limit.

config ARMBW_HWMON
	tristate "ARM PMU Bandwidth monitor hardware"
	depends on ARCH_MSM8916 || ARCH_MSM8226 || ARCH_MSM8610
	help
	  The PMU present on these ARM cores allow for the use of counters to
	  monitor the traffic coming from each core to the bus. It also has the
	  capability to raise an IRQ when the counter overflows, which can be
	  used to get an IRQ when the count exceeds a certain value

config DEVFREQ_GOV_MSM_GPUBW_MON
	tristate "GPU BW voting governor"
	depends on DEVFREQ_GOV_MSM_ADRENO_TZ
	help
	  MSM GPU governor for GPU bus bandwidth voting.
	  This governor works together with MSM Adreno Trustzone governor,
	  and select bus frequency votes using an "on-demand" alorithm..
	  This governor is unlikely to be useful for non-MSM devices.

config DEVFREQ_GOV_MSM_BW_HWMON
	tristate "HW monitor based governor for device BW"
	depends on ARCH_MSM_KRAIT || MSM_BIMC_BWMON
	help
	  HW monitor based governor for device to DDR bandwidth voting.

	  When this governor is used for Krait CPUs, it sets the Krait CPU BW
	  vote by using L2 PM counters to monitor the Krait's use of DDR.
	  Since this uses some of the Krait PM counters it can conflict with
	  existing profiling tools.  This governor is unlikely to be useful
	  for non-MSM devices.

config DEVFREQ_GOV_MSM_CACHE_HWMON
	tristate "HW monitor based governor for cache frequency"
	help
	  HW monitor based governor for cache frequency scaling. This
	  governor currently supports only Krait L2 PM counters.  Sets the
	  cache frequency by using L2 PM counters to monitor the Krait's use
	  of the L2.  Since this governor uses some of the PM counters it can
	  conflict with existing profiling tools.  This governor is unlikely
	  to be useful for other devices.

config DEVFREQ_GOV_SPDM_HYP
	bool "MSM SPDM Hypervisor Governor"
	depends on ARCH_MSM
	help
	  Hypervisor based governor for CPU bandwidth voting
	  for MSM chipsets.
	  Sets the frequency using a "on-demand" algorithm.
	  This governor is unlikely to be useful for other devices.

comment "DEVFREQ Drivers"

config ARM_EXYNOS4_BUS_DEVFREQ
	bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
	depends on CPU_EXYNOS4210 || CPU_EXYNOS4212 || CPU_EXYNOS4412
	select ARCH_HAS_OPP
	select DEVFREQ_GOV_SIMPLE_ONDEMAND
	help
	  This adds the DEVFREQ driver for Exynos4210 memory bus (vdd_int)
	  and Exynos4212/4412 memory interface and bus (vdd_mif + vdd_int).
	  It reads PPMU counters of memory controllers and adjusts
	  the operating frequencies and voltages with OPP support.
	  To operate with optimal voltages, ASV support is required
	  (CONFIG_EXYNOS_ASV).

config DEVFREQ_SIMPLE_DEV
	tristate "Device driver for simple clock device with no status info"
	select DEVFREQ_GOV_PERFORMANCE
	select DEVFREQ_GOV_POWERSAVE
	select DEVFREQ_GOV_USERSPACE
	select DEVFREQ_GOV_CPUFREQ
	help
	  Device driver for simple devices that control their frequency using
	  clock APIs and don't have any form of status reporting.

config MSM_DEVFREQ_DEVBW
	bool "MSM DEVFREQ device for device master <-> slave IB/AB BW voting"
	depends on ARCH_MSM
	select DEVFREQ_GOV_PERFORMANCE
	select DEVFREQ_GOV_POWERSAVE
	select DEVFREQ_GOV_USERSPACE
	select DEVFREQ_GOV_CPUFREQ
	default n
	help
	  Different devfreq governors use this devfreq device to make CPU to
	  DDR IB/AB bandwidth votes. This driver provides a SoC topology
	  agnostic interface to so that some of the devfreq governors can be
	  shared across SoCs.

config SPDM_SCM
	bool "MSM SPDM SCM based call support"
	depends on DEVFREQ_SPDM
	help
	  SPDM driver support the dcvs algorithm logic being accessed via
	  scm or hvc calls. This adds the support for SPDM interaction to
          tz via SCM based call. If not selected then Hypervior interaction
          will be activated.

config DEVFREQ_SPDM
	bool "MSM SPDM based bandwidth voting"
	depends on ARCH_MSM
	select DEVFREQ_GOV_SPDM_HYP
	help
	  This adds the support for SPDM based bandwidth voting on MSM chipsets.
	  This driver allows any SPDM based client to vote for bandwidth.
	  Used with the MSM SPDM Hypervisor Governor.

endif # PM_DEVFREQ