imx: Remove boolean parameter from wdog powerdown function

imx_set_wdog_powerdown() is always used to disable the power down
enable bit, so remove the boolean parameter of the function.

It is also a bit strange to write a boolean value into registers,
so this new version makes explicit that we are writing 0.

While at it, rename it to imx_wdog_disable_powerdown().
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>

arch/arm/include/asm/mach-imx/sys_proto.h

@@ -105,7 +105,7 @@ void set_chipselect_size(int const);
 
 void init_aips(void);
 void init_src(void);
-void imx_set_wdog_powerdown(bool enable);
+void imx_wdog_disable_powerdown(void);
 
 int board_mmc_get_env_dev(int devno);
 

arch/arm/mach-imx/init.c

@@ -65,7 +65,7 @@ void init_aips(void)
 	}
 }
 
-void imx_set_wdog_powerdown(bool enable)
+void imx_wdog_disable_powerdown(void)
 {
 	struct wdog_regs *wdog1 = (struct wdog_regs *)WDOG1_BASE_ADDR;
 	struct wdog_regs *wdog2 = (struct wdog_regs *)WDOG2_BASE_ADDR;
@@ -75,13 +75,13 @@ void imx_set_wdog_powerdown(bool enable)
 #endif
 
 	/* Write to the PDE (Power Down Enable) bit */
-	writew(enable, &wdog1->wmcr);
-	writew(enable, &wdog2->wmcr);
+	writew(0, &wdog1->wmcr);
+	writew(0, &wdog2->wmcr);
 
 	if (is_mx6sx() || is_mx6ul() || is_mx6ull() || is_mx7())
-		writew(enable, &wdog3->wmcr);
+		writew(0, &wdog3->wmcr);
 #ifdef CONFIG_MX7D
-	writew(enable, &wdog4->wmcr);
+	writew(0, &wdog4->wmcr);
 #endif
 }
 

arch/arm/mach-imx/mx6/soc.c

@@ -436,7 +436,7 @@ int arch_cpu_init(void)
 	if (is_mx6sl())
 		setbits_le32(&ccm->cscmr1, MXC_CCM_CSCMR1_PER_CLK_SEL_MASK);
 
-	imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
+	imx_wdog_disable_powerdown(); /* Disable PDE bit of WMCR register */
 
 	if (is_mx6sx())
 		setbits_le32(&ccm->cscdr1, MXC_CCM_CSCDR1_UART_CLK_SEL);

arch/arm/mach-imx/mx7/soc.c

@@ -236,7 +236,7 @@ int arch_cpu_init(void)
 
 	init_csu();
 	/* Disable PDE bit of WMCR register */
-	imx_set_wdog_powerdown(false);
+	imx_wdog_disable_powerdown();
 
 	imx_enet_mdio_fixup();