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ARM: cns3xxx: Add new and export the old power management functions

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This patch adds cns3xxx_pwr_clk_dis, and exports these power management
functions that may be used by many other device drivers on CNS3XXX.

Signed-off-by: Mac Lin <mkl0301@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
This commit is contained in:
Mac Lin 2010-11-23 00:32:43 +08:00 committed by Anton Vorontsov
parent df8f4d2f3e
commit 38e64ba0f1
4 changed files with 38 additions and 2 deletions
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2
arch/arm/mach-cns3xxx/core.h
View file

@ -17,7 +17,5 @@ extern struct sys_timer cns3xxx_timer;
void __init cns3xxx_map_io(void); void __init cns3xxx_map_io(void);
void __init cns3xxx_init_irq(void); void __init cns3xxx_init_irq(void);
void cns3xxx_power_off(void); void cns3xxx_power_off(void);
void cns3xxx_pwr_power_up(unsigned int block);
void cns3xxx_pwr_power_down(unsigned int block);
#endif /* __CNS3XXX_CORE_H */ #endif /* __CNS3XXX_CORE_H */

1
arch/arm/mach-cns3xxx/devices.c
View file

@ -18,6 +18,7 @@
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <mach/cns3xxx.h> #include <mach/cns3xxx.h>
#include <mach/irqs.h> #include <mach/irqs.h>
#include <mach/pm.h>
#include "core.h" #include "core.h"
#include "devices.h" #include "devices.h"

19
arch/arm/mach-cns3xxx/include/mach/pm.h Normal file
View file

@ -0,0 +1,19 @@
/*
* Copyright 2000 Deep Blue Solutions Ltd
* Copyright 2004 ARM Limited
* Copyright 2008 Cavium Networks
*
* This file 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.
*/
#ifndef __CNS3XXX_PM_H
#define __CNS3XXX_PM_H
void cns3xxx_pwr_clk_en(unsigned int block);
void cns3xxx_pwr_clk_dis(unsigned int block);
void cns3xxx_pwr_power_up(unsigned int block);
void cns3xxx_pwr_power_down(unsigned int block);
#endif /* __CNS3XXX_PM_H */

18
arch/arm/mach-cns3xxx/pm.c
View file

@ -6,10 +6,13 @@
* published by the Free Software Foundation. * published by the Free Software Foundation.
*/ */
#include <linux/init.h>
#include <linux/module.h>
#include <linux/io.h> #include <linux/io.h>
#include <linux/delay.h> #include <linux/delay.h>
#include <mach/system.h> #include <mach/system.h>
#include <mach/cns3xxx.h> #include <mach/cns3xxx.h>
#include <mach/pm.h>
void cns3xxx_pwr_clk_en(unsigned int block) void cns3xxx_pwr_clk_en(unsigned int block)
{ {
@ -18,6 +21,16 @@ void cns3xxx_pwr_clk_en(unsigned int block)
reg |= (block & PM_CLK_GATE_REG_MASK); reg |= (block & PM_CLK_GATE_REG_MASK);
__raw_writel(reg, PM_CLK_GATE_REG); __raw_writel(reg, PM_CLK_GATE_REG);
} }
EXPORT_SYMBOL(cns3xxx_pwr_clk_en);
void cns3xxx_pwr_clk_dis(unsigned int block)
{
u32 reg = __raw_readl(PM_CLK_GATE_REG);
reg &= ~(block & PM_CLK_GATE_REG_MASK);
__raw_writel(reg, PM_CLK_GATE_REG);
}
EXPORT_SYMBOL(cns3xxx_pwr_clk_dis);
void cns3xxx_pwr_power_up(unsigned int block) void cns3xxx_pwr_power_up(unsigned int block)
{ {
@ -29,6 +42,7 @@ void cns3xxx_pwr_power_up(unsigned int block)
/* Wait for 300us for the PLL output clock locked. */ /* Wait for 300us for the PLL output clock locked. */
udelay(300); udelay(300);
}; };
EXPORT_SYMBOL(cns3xxx_pwr_power_up);
void cns3xxx_pwr_power_down(unsigned int block) void cns3xxx_pwr_power_down(unsigned int block)
{ {
@ -38,6 +52,7 @@ void cns3xxx_pwr_power_down(unsigned int block)
reg |= (block & CNS3XXX_PWR_PLL_ALL); reg |= (block & CNS3XXX_PWR_PLL_ALL);
__raw_writel(reg, PM_PLL_HM_PD_CTRL_REG); __raw_writel(reg, PM_PLL_HM_PD_CTRL_REG);
}; };
EXPORT_SYMBOL(cns3xxx_pwr_power_down);
static void cns3xxx_pwr_soft_rst_force(unsigned int block) static void cns3xxx_pwr_soft_rst_force(unsigned int block)
{ {
@ -57,6 +72,7 @@ static void cns3xxx_pwr_soft_rst_force(unsigned int block)
__raw_writel(reg, PM_SOFT_RST_REG); __raw_writel(reg, PM_SOFT_RST_REG);
} }
EXPORT_SYMBOL(cns3xxx_pwr_soft_rst_force);
void cns3xxx_pwr_soft_rst(unsigned int block) void cns3xxx_pwr_soft_rst(unsigned int block)
{ {
@ -70,6 +86,7 @@ void cns3xxx_pwr_soft_rst(unsigned int block)
} }
cns3xxx_pwr_soft_rst_force(block); cns3xxx_pwr_soft_rst_force(block);
} }
EXPORT_SYMBOL(cns3xxx_pwr_soft_rst);
void arch_reset(char mode, const char *cmd) void arch_reset(char mode, const char *cmd)
{ {
@ -100,3 +117,4 @@ int cns3xxx_cpu_clock(void)
return cpu; return cpu;
} }
EXPORT_SYMBOL(cns3xxx_cpu_clock);