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Subject[PATCH 8/9] ARM: OMAP2+: SmartReflex: add POWER_AVS Kconfig options
Date
From: Jean Pihet <j-pihet@ti.com>

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>
---
arch/arm/mach-omap2/Makefile | 5 ++-
arch/arm/mach-omap2/pm.h | 2 +-
arch/arm/mach-omap2/smartreflex.h | 6 ++--
arch/arm/plat-omap/Kconfig | 45 ++++++++++++++++++++++++------------
4 files changed, 37 insertions(+), 21 deletions(-)
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 9746529..30666fd 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -68,8 +68,9 @@ 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)
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index a051431..1a2d483 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -110,7 +110,7 @@ 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
diff --git a/arch/arm/mach-omap2/smartreflex.h b/arch/arm/mach-omap2/smartreflex.h
index a87bac1..754f6aa 100644
--- a/arch/arm/mach-omap2/smartreflex.h
+++ b/arch/arm/mach-omap2/smartreflex.h
@@ -17,8 +17,8 @@
* published by the Free Software Foundation.
*/

-#ifndef __ASM_ARM_OMAP_SMARTREFLEX_H
-#define __ASM_ARM_OMAP_SMARTREFLEX_H
+#ifndef __DRIVERS_POWER_AVS_SMARTREFLEX_H
+#define __DRIVERS_POWER_AVS_SMARTREFLEX_H

#include <linux/platform_device.h>
#include <linux/delay.h>
@@ -177,7 +177,7 @@ struct omap_sr_pmic_data {
};


-#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.
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index f419a08..6ec9237 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -44,37 +44,52 @@ config OMAP_DEBUG_LEDS
depends on OMAP_DEBUG_DEVICES
default y if LEDS_CLASS

-config OMAP_SMARTREFLEX
- bool "SmartReflex support"
- depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
+menuconfig POWER_AVS
+ tristate "Adaptive Voltage Scaling class support"
help
- Say Y if you want to enable SmartReflex.
+ AVS 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 support for the 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.

-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
--
1.7.5.4


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