ARM: OMAP4+: move errata initialization to omap4_pm_init_early

Move all OMAP4 PM errata initializations to centralized location in
omap4_pm_init_early. This allows for users to utilize the erratas
in various submodules as needed.

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

4 files changed, 23 insertions, 5 deletions

diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 3adaa1d5cd10..a6aae300542c 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -62,11 +62,17 @@ static inline int omap3_pm_init(void)
 
 #if defined(CONFIG_PM) && defined(CONFIG_ARCH_OMAP4)
 int omap4_pm_init(void);
+int omap4_pm_init_early(void);
 #else
 static inline int omap4_pm_init(void)
 {
         return 0;
 }
+
+static inline int omap4_pm_init_early(void)
+{
+        return 0;
+}
 #endif
 
 #ifdef CONFIG_OMAP_MUX
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 47381fd8746f..d408b15b4fbf 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -641,6 +641,7 @@ void __init omap4430_init_early(void)
         omap_cm_base_init();
         omap4xxx_check_revision();
         omap4xxx_check_features();
+        omap4_pm_init_early();
         omap44xx_prm_init();
         omap44xx_voltagedomains_init();
         omap44xx_powerdomains_init();
diff --git a/arch/arm/mach-omap2/omap-smp.c b/arch/arm/mach-omap2/omap-smp.c
index 75e95d4fb448..17550aa39d0f 100644
--- a/arch/arm/mach-omap2/omap-smp.c
+++ b/arch/arm/mach-omap2/omap-smp.c
@@ -39,8 +39,6 @@
 
 #define OMAP5_CORE_COUNT        0x2
 
-u16 pm44xx_errata;
-
 /* SCU base address */
 static void __iomem *scu_base;
 
@@ -217,10 +215,8 @@ static void __init omap4_smp_prepare_cpus(unsigned int max_cpus)
         if (scu_base)
                 scu_enable(scu_base);
 
-        if (cpu_is_omap446x()) {
+        if (cpu_is_omap446x())
                 startup_addr = omap4460_secondary_startup;
-                pm44xx_errata |= PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD;
-        }
 
         /*
          * Write the address of secondary startup routine into the
diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c
index 82f0698933d8..eefb30cfcabd 100644
--- a/arch/arm/mach-omap2/pm44xx.c
+++ b/arch/arm/mach-omap2/pm44xx.c
@@ -24,6 +24,8 @@
 #include "powerdomain.h"
 #include "pm.h"
 
+u16 pm44xx_errata;
+
 struct power_state {
         struct powerdomain *pwrdm;
         u32 next_state;
@@ -199,6 +201,19 @@ static inline int omap4_init_static_deps(void)
 }
 
 /**
+ * omap4_pm_init_early - Does early initialization necessary for OMAP4+ devices
+ *
+ * Initializes basic stuff for power management functionality.
+ */
+int __init omap4_pm_init_early(void)
+{
+        if (cpu_is_omap446x())
+                pm44xx_errata |= PM_OMAP4_ROM_SMP_BOOT_ERRATUM_GICD;
+
+        return 0;
+}
+
+/**
  * omap4_pm_init - Init routine for OMAP4+ devices
  *
  * Initializes all powerdomain and clockdomain target states