Commit fa765823 authored by Thara Gopinath's avatar Thara Gopinath Committed by Kevin Hilman
Browse files

OMAP3: PM: Adding smartreflex class3 driver 



Smartreflex Class3 implementation continuously monitors
silicon performance  and instructs the Voltage Processors
to increase or decrease the voltage.
This patch adds smartreflex class 3 driver. This driver hooks
up with the generic smartreflex driver smartreflex.c to abstract
out class specific implementations out of the generic driver.

Class3 driver is chosen as the default class driver for smartreflex.
If any other class driver needs to be implemented, the init of that
driver should be called from the board file. That way the new class driver
will over-ride the Class3 driver.

Signed-off-by: default avatarThara Gopinath <thara@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
parent d3442726

arch/arm/mach-omap2/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o voltage.o \ 
obj-$(CONFIG_ARCH_OMAP4)		+= pm44xx.o pm_bus.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



AFLAGS_sleep24xx.o			:=-Wa,-march=armv6

AFLAGS_sleep34xx.o			:=-Wa,-march=armv7-a

arch/arm/mach-omap2/smartreflex-class3.c

0 → 100644
+59 −0
Original line number Diff line number Diff line 
/*

 * Smart reflex Class 3 specific implementations

 *

 * Author: Thara Gopinath       <thara@ti.com>

 *

 * Copyright (C) 2010 Texas Instruments, Inc.

 * Thara Gopinath <thara@ti.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <plat/smartreflex.h>



static int sr_class3_enable(struct voltagedomain *voltdm)

{

	unsigned long volt = omap_voltage_get_nom_volt(voltdm);



	if (!volt) {

		pr_warning("%s: Curr voltage unknown. Cannot enable sr_%s\n",

				__func__, voltdm->name);

		return -ENODATA;

	}



	omap_vp_enable(voltdm);

	return sr_enable(voltdm, volt);

}



static int sr_class3_disable(struct voltagedomain *voltdm, int is_volt_reset)

{

	omap_vp_disable(voltdm);

	sr_disable(voltdm);

	if (is_volt_reset)

		omap_voltage_reset(voltdm);



	return 0;

}



static int sr_class3_configure(struct voltagedomain *voltdm)

{

	return sr_configure_errgen(voltdm);

}



/* SR class3 structure */

static struct omap_sr_class_data class3_data = {

	.enable = sr_class3_enable,

	.disable = sr_class3_disable,

	.configure = sr_class3_configure,

	.class_type = SR_CLASS3,

};



/* Smartreflex Class3 init API to be called from board file */

static int __init sr_class3_init(void)

{

	pr_info("SmartReflex Class3 initialized\n");

	return sr_register_class(&class3_data);

}

late_initcall(sr_class3_init);

arch/arm/plat-omap/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -57,6 +57,15 @@ config OMAP_SMARTREFLEX 
	  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

	bool "Class 3 mode of Smartreflex Implementation"

	depends on OMAP_SMARTREFLEX && TWL4030_CORE

	help

	  Say Y to enable Class 3 implementation of Smartreflex



	  Class 3 implementation of Smartreflex employs continuous hardware

	  voltage calibration.



config OMAP_RESET_CLOCKS

	bool "Reset unused clocks during boot"

	depends on ARCH_OMAP

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