PM / devfreq: make exynos-bus ARM_EXYNOS_BUS_DEVFREQ tristate

[cascardo/linux.git] / drivers / devfreq / Kconfig

diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
index 4de78c5..a5be56e 100644 (file)
--- a/drivers/devfreq/Kconfig
+++ b/drivers/devfreq/Kconfig
@@ -64,30 +64,32 @@ config DEVFREQ_GOV_USERSPACE
          Otherwise, the governor does not change the frequency
          given at the initialization.
 
+config DEVFREQ_GOV_PASSIVE
+       tristate "Passive"
+       help
+         Sets the frequency based on the frequency of its parent devfreq
+         device. This governor does not change the frequency by itself
+         through sysfs entries. The passive governor recommends that
+         devfreq device uses the OPP table to get the frequency/voltage.
+
 comment "DEVFREQ Drivers"
 
-config ARM_EXYNOS4_BUS_DEVFREQ
-       bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
-       depends on (CPU_EXYNOS4210 || SOC_EXYNOS4212 || SOC_EXYNOS4412) && !ARCH_MULTIPLATFORM
+config ARM_EXYNOS_BUS_DEVFREQ
+       tristate "ARM EXYNOS Generic Memory Bus DEVFREQ Driver"
+       depends on ARCH_EXYNOS
        select DEVFREQ_GOV_SIMPLE_ONDEMAND
+       select DEVFREQ_GOV_PASSIVE
+       select DEVFREQ_EVENT_EXYNOS_PPMU
+       select PM_DEVFREQ_EVENT
        select PM_OPP
        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.
+         This adds the common DEVFREQ driver for Exynos Memory bus. Exynos
+         Memory bus has one more group of memory bus (e.g, MIF and INT block).
+         Each memory bus group could contain many memoby bus block. It reads
+         PPMU counters of memory controllers by using DEVFREQ-event device
+         and adjusts the operating frequencies and voltages with OPP support.
          This does not yet operate with optimal voltages.
 
-config ARM_EXYNOS5_BUS_DEVFREQ
-       tristate "ARM Exynos5250 Bus DEVFREQ Driver"
-       depends on SOC_EXYNOS5250
-       select DEVFREQ_GOV_SIMPLE_ONDEMAND
-       select PM_OPP
-       help
-         This adds the DEVFREQ driver for Exynos5250 bus interface (vdd_int).
-         It reads PPMU counters of memory controllers and adjusts the
-         operating frequencies and voltages with OPP support.
-
 config ARM_TEGRA_DEVFREQ
        tristate "Tegra DEVFREQ Driver"
        depends on ARCH_TEGRA_124_SOC