devfreq: add Makefile and Kconfig for Nvidia governors

POD_SCALING, WMARK_ACTIVE, and WMARK_SIMPLE devfreq scaling governors
were moved to linux-nvidia repository. Add corresponding Kconfig and
Makefile for them.

Bug 200427621

Change-Id: Ib6e9416c11c5a6938c472ebf2d9480d85ddd473d
Signed-off-by: Timo Alho <talho@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1770155
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 36 insertions, 0 deletions

diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
new file mode 100644
index 000000000..68cd006ca
--- /dev/null
+++ b/drivers/devfreq/Kconfig
@@ -0,0 +1,33 @@
+if PM_DEVFREQ
+
+comment "NVIDIA DEVFREQ Governors"
+
+config DEVFREQ_GOV_POD_SCALING
+        tristate "Power On Demand Scaling"
+        help
+          Sets the frequency based on two properties:
+          (1) The governor receives activity throughput hints that
+          indicate whether scaling up or down is required
+          (2) the load of the devices is estimated using busy times
+          from device profile to determine if the frequency should
+          be altered.
+
+config DEVFREQ_GOV_WMARK_SIMPLE
+        tristate "Simple Watermark"
+        help
+          Sets the frequency based on monitor watermark events.
+          This governor returns the next frequency from frequency table
+          based on type watermark event.
+
+config DEVFREQ_GOV_WMARK_ACTIVE
+        tristate "Active Watermark"
+        help
+          Sets the frequency based on monitor watermark events.
+          This governor calculates relation between current load and
+          target load. The next frequency is calculated by multiplying
+          this relation with the current frequency.
+
+          The watermark values are updated so that the watermarks are
+          triggered when the above algorithm would change the frequency.
+
+endif # PM_DEVFREQ
diff --git a/drivers/devfreq/Makefile b/drivers/devfreq/Makefile
new file mode 100644
index 000000000..2e2d20630
--- /dev/null
+++ b/drivers/devfreq/Makefile
@@ -0,0 +1,3 @@
+obj-$(CONFIG_DEVFREQ_GOV_POD_SCALING)   += governor_pod_scaling.o
+obj-$(CONFIG_DEVFREQ_GOV_WMARK_SIMPLE)  += governor_wmark_simple.o
+obj-$(CONFIG_DEVFREQ_GOV_WMARK_ACTIVE)  += governor_wmark_active.o