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

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>

arch/arm/mach-cns3xxx/pm.c

@@ -6,10 +6,13 @@
  * 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>
 #include <mach/cns3xxx.h>
+#include <mach/pm.h>
 
 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);
 	__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 +42,7 @@ 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 +52,7 @@ 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)
 {
@@ -57,6 +72,7 @@ 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)
 {
@@ -70,6 +86,7 @@ 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)
 {
@@ -100,3 +117,4 @@ int cns3xxx_cpu_clock(void)
 
 	return cpu;
 }
+EXPORT_SYMBOL(cns3xxx_cpu_clock);