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ARM: OMAP2+: SmartReflex: add POWER_AVS Kconfig options

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Add a Kconfig menu (POWER_AVS) and rename the Kconfig options
for the OMAP SmartReflex implementation:
	CONFIG_OMAP_SMARTREFLEX renames to CONFIG_POWER_AVS_OMAP
	CONFIG_OMAP_SMARTREFLEX_CLASS3 renames to CONFIG_POWER_AVS_OMAP_CLASS3

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

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: J Keerthy <j-keerthy@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Jean Pihet 2012-04-24 11:38:50 +05:30 committed by Kevin Hilman
parent 308d1bd0a7
commit 7fb149ffe3
4 changed files with 35 additions and 19 deletions
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5
arch/arm/mach-omap2/Makefile
View File

@ -69,8 +69,9 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o \
obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o omap-mpuss-lowpower.o \
cpuidle44xx.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)

2
arch/arm/mach-omap2/pm.h
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@ -88,7 +88,7 @@ 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) */
#ifdef CONFIG_OMAP_SMARTREFLEX
#ifdef CONFIG_POWER_AVS_OMAP
extern int omap_devinit_smartreflex(void);
extern void omap_enable_smartreflex_on_init(void);
#else

45
arch/arm/plat-omap/Kconfig
View File

@ -45,37 +45,52 @@ config OMAP_DEBUG_LEDS
depends on OMAP_DEBUG_DEVICES
default y if LEDS_CLASS
config OMAP_SMARTREFLEX
bool "SmartReflex support"
menuconfig POWER_AVS
tristate "Adaptive Voltage Scaling class support"
help
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
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 if you want to enable SmartReflex.
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.
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.
config OMAP_SMARTREFLEX_CLASS3
config POWER_AVS_OMAP_CLASS3
bool "Class 3 mode of Smartreflex Implementation"
depends on OMAP_SMARTREFLEX && TWL4030_CORE
depends on POWER_AVS_OMAP && TWL4030_CORE
help
Say Y to enable Class 3 implementation of Smartreflex
Class 3 implementation of Smartreflex employs continuous hardware
voltage calibration.
endif # POWER_AVS
config OMAP_RESET_CLOCKS
bool "Reset unused clocks during boot"
depends on ARCH_OMAP

2
include/linux/power/smartreflex.h
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@ -207,7 +207,7 @@ struct omap_smartreflex_dev_attr {
const char *sensor_voltdm_name;
};
#ifdef CONFIG_OMAP_SMARTREFLEX
#ifdef CONFIG_POWER_AVS_OMAP
/*
* The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR.
* The smartreflex class driver should pass the class type.