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    Subject[PATCH V3 09/10] ARM: OMAP2+: SmartReflex: add POWER_AVS Kconfig options
    From: Jean Pihet <>

    Add a Kconfig menu (POWER_AVS) and rename the Kconfig options
    for the OMAP SmartReflex implementation:

    This change makes the SmartReflex implementation ready for the move
    to drivers/.

    Signed-off-by: Jean Pihet <>
    Signed-off-by: J Keerthy <>
    arch/arm/mach-omap2/Makefile | 5 ++-
    arch/arm/mach-omap2/pm.h | 2 +-
    arch/arm/plat-omap/Kconfig | 45 ++++++++++++++++++++++++------------
    include/linux/power/smartreflex.h | 2 +-
    4 files changed, 35 insertions(+), 19 deletions(-)

    diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
    index d8604a3..85ca797 100644
    --- a/arch/arm/mach-omap2/Makefile
    +++ b/arch/arm/mach-omap2/Makefile
    @@ -69,8 +69,9 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o \
    obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o omap-mpuss-lowpower.o \
    obj-$(CONFIG_PM_DEBUG) += pm-debug.o
    -obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o
    -obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o
    +obj-$(CONFIG_POWER_AVS_OMAP) += sr_device.o smartreflex.o
    +obj-$(CONFIG_POWER_AVS_OMAP_CLASS3) += smartreflex-class3.o

    AFLAGS_sleep24xx.o :=-Wa,-march=armv6
    AFLAGS_sleep34xx.o :=-Wa,-march=armv7-a$(plus_sec)
    diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
    index 36fa90b..77c8c85 100644
    --- a/arch/arm/mach-omap2/pm.h
    +++ b/arch/arm/mach-omap2/pm.h
    @@ -109,7 +109,7 @@ extern void enable_omap3630_toggle_l2_on_restore(void);
    static inline void enable_omap3630_toggle_l2_on_restore(void) { }
    #endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP3) */

    extern int omap_devinit_smartreflex(void);
    extern void omap_enable_smartreflex_on_init(void);
    diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
    index ad95c7a..bba384d 100644
    --- a/arch/arm/plat-omap/Kconfig
    +++ b/arch/arm/plat-omap/Kconfig
    @@ -45,37 +45,52 @@ config OMAP_DEBUG_LEDS
    depends on OMAP_DEBUG_DEVICES
    default y if LEDS_CLASS

    - bool "SmartReflex support"
    - depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
    +menuconfig POWER_AVS
    + tristate "Adaptive Voltage Scaling class support"
    - Say Y if you want to enable SmartReflex.
    + AVS(Adaptive Voltage Scaling) is a power management technique which
    + finely controls the operating voltage of a device in order to optimize
    + (i.e. reduce) its power consumption.
    + At a given operating point the voltage is adapted depending on
    + static factors (chip manufacturing process) and dynamic factors
    + (temperature depending performance).
    + AVS is also called SmartReflex on OMAP devices.
    + Say Y here to enable Adaptive Voltage Scaling class support.
    +if POWER_AVS

    - SmartReflex can perform continuous dynamic voltage
    - scaling around the nominal operating point voltage
    - according to silicon characteristics and operating
    - conditions. Enabling SmartReflex reduces power
    - consumption.
    +config POWER_AVS_OMAP
    + bool "AVS(Adaptive Voltage Scaling) support for OMAP IP versions 1&2"
    + depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
    + help
    + Say Y to enable AVS support on OMAP containing the version 1 or
    + version 2 of the SmartReflex IP.
    + V1 is the 65nm version used in OMAP3430.
    + V2 is the update for the 45nm version of the IP used in OMAP3630
    + and OMAP4430

    Please note, that by default SmartReflex is only
    - initialized. To enable the automatic voltage
    - compensation for vdd mpu and vdd core from user space,
    + initialized and not enabled. To enable the automatic voltage
    + compensation for vdd mpu and vdd core from user space,
    user must write 1 to
    - /debug/voltage/vdd_<X>/smartreflex/autocomp,
    - where X is mpu or core for OMAP3.
    + /debug/smartreflex/sr_<X>/autocomp,
    + where X is mpu_iva or core for OMAP3.
    Optionally autocompensation can be enabled in the kernel
    by default during system init via the enable_on_init flag
    which an be passed as platform data to the smartreflex driver.

    bool "Class 3 mode of Smartreflex Implementation"
    - depends on OMAP_SMARTREFLEX && TWL4030_CORE
    + depends on POWER_AVS_OMAP && TWL4030_CORE
    Say Y to enable Class 3 implementation of Smartreflex

    Class 3 implementation of Smartreflex employs continuous hardware
    voltage calibration.

    +endif # POWER_AVS
    bool "Reset unused clocks during boot"
    depends on ARCH_OMAP
    diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
    index 222f901..3101e62 100644
    --- a/include/linux/power/smartreflex.h
    +++ b/include/linux/power/smartreflex.h
    @@ -207,7 +207,7 @@ struct omap_smartreflex_dev_attr {
    const char *sensor_voltdm_name;

    * The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR.
    * The smartreflex class driver should pass the class type.

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