linux-kernel - [PATCH v2 1/3] ARM: cns3xxx: Add new and export the old power management functions

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Message-Id: <1290443565-20766-2-git-send-email-mkl0301@gmail.com>
Date:	Tue, 23 Nov 2010 00:32:43 +0800
From:	mkl0301@...il.com
To:	cbouatmailru@...il.com, avorontsov@...sta.com,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	dbrownell@...rs.sourceforge.net, linux-usb@...r.kernel.org
Cc:	Mac Lin <mkl0301@...il.com>
Subject: [PATCH v2 1/3] ARM: cns3xxx: Add new and export the old power management functions

From: Mac Lin <mkl0301@...il.com>

This patch add cns3xxx_pwr_clk_dis, and export thoes power management functions
that may be used by many other device drivers on CNS3XXX.

Signed-off-by: Mac Lin <mkl0301@...il.com>
---
 arch/arm/mach-cns3xxx/core.h            |    4 ++--
 arch/arm/mach-cns3xxx/include/mach/pm.h |   19 +++++++++++++++++++
 arch/arm/mach-cns3xxx/pm.c              |   17 +++++++++++++++++
 3 files changed, 38 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm/mach-cns3xxx/include/mach/pm.h

diff --git a/arch/arm/mach-cns3xxx/core.h b/arch/arm/mach-cns3xxx/core.h
index 6b33ec1..c6636bd 100644
--- a/arch/arm/mach-cns3xxx/core.h
+++ b/arch/arm/mach-cns3xxx/core.h
@@ -11,13 +11,13 @@
 #ifndef __CNS3XXX_CORE_H
 #define __CNS3XXX_CORE_H
 
+#include <mach/pm.h>
+
 extern void __iomem *gic_cpu_base_addr;
 extern struct sys_timer cns3xxx_timer;
 
 void __init cns3xxx_map_io(void);
 void __init cns3xxx_init_irq(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 */
diff --git a/arch/arm/mach-cns3xxx/include/mach/pm.h b/arch/arm/mach-cns3xxx/include/mach/pm.h
new file mode 100644
index 0000000..102617b
--- /dev/null
+++ b/arch/arm/mach-cns3xxx/include/mach/pm.h
@@ -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 */
diff --git a/arch/arm/mach-cns3xxx/pm.c b/arch/arm/mach-cns3xxx/pm.c
index 38e4470..a4495e6 100644
--- a/arch/arm/mach-cns3xxx/pm.c
+++ b/arch/arm/mach-cns3xxx/pm.c
@@ -6,6 +6,8 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/init.h>
+#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/delay.h>
 #include <mach/system.h>
@@ -18,6 +20,16 @@ void cns3xxx_pwr_clk_en(unsigned int block)
 	reg |= (block & PM_CLK_GATE_REG_MASK);
 	__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)
 {
@@ -29,6 +41,7 @@ void cns3xxx_pwr_power_up(unsigned int block)
 	/* Wait for 300us for the PLL output clock locked. */
 	udelay(300);
 };
+EXPORT_SYMBOL(cns3xxx_pwr_power_up);
 
 void cns3xxx_pwr_power_down(unsigned int block)
 {
@@ -38,6 +51,7 @@ void cns3xxx_pwr_power_down(unsigned int block)
 	reg |= (block & CNS3XXX_PWR_PLL_ALL);
 	__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)
 {
@@ -56,6 +70,7 @@ static void cns3xxx_pwr_soft_rst_force(unsigned int block)
 
 	__raw_writel(reg, PM_SOFT_RST_REG);
 }
+EXPORT_SYMBOL(cns3xxx_pwr_soft_rst_force);
 
 void cns3xxx_pwr_soft_rst(unsigned int block)
 {
@@ -69,6 +84,7 @@ void cns3xxx_pwr_soft_rst(unsigned int block)
 	}
 	cns3xxx_pwr_soft_rst_force(block);
 }
+EXPORT_SYMBOL(cns3xxx_pwr_soft_rst);
 
 void arch_reset(char mode, const char *cmd)
 {
@@ -99,3 +115,4 @@ int cns3xxx_cpu_clock(void)
 
 	return cpu;
 }
+EXPORT_SYMBOL(cns3xxx_cpu_clock);
-- 
1.7.3

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