Merge branch 'omap4_and_sdrc_2.6.27' of git://git.pwsan.com/linux-2.6 into omap-for-linus

1 files changed, 25 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/control.c b/arch/arm/mach-omap2/control.c
index a8d20eef2306..8b3c469e7bcd 100644
--- a/arch/arm/mach-omap2/control.c
+++ b/arch/arm/mach-omap2/control.c
@@ -25,6 +25,7 @@
 #include "sdrc.h"
 
 static void __iomem *omap2_ctrl_base;
+static void __iomem *omap4_ctrl_pad_base;
 
 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
 struct omap3_scratchpad {
@@ -137,6 +138,7 @@ static struct omap3_control_regs control_context;
 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
 
 #define OMAP_CTRL_REGADDR(reg)          (omap2_ctrl_base + (reg))
+#define OMAP4_CTRL_PAD_REGADDR(reg)     (omap4_ctrl_pad_base + (reg))
 
 void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
 {
@@ -145,6 +147,12 @@ void __init omap2_set_globals_control(struct omap_globals *omap2_globals)
                 omap2_ctrl_base = ioremap(omap2_globals->ctrl, SZ_4K);
                 WARN_ON(!omap2_ctrl_base);
         }
+
+        /* Static mapping, never released */
+        if (omap2_globals->ctrl_pad) {
+                omap4_ctrl_pad_base = ioremap(omap2_globals->ctrl_pad, SZ_4K);
+                WARN_ON(!omap4_ctrl_pad_base);
+        }
 }
 
 void __iomem *omap_ctrl_base_get(void)
@@ -182,6 +190,23 @@ void omap_ctrl_writel(u32 val, u16 offset)
         __raw_writel(val, OMAP_CTRL_REGADDR(offset));
 }
 
+/*
+ * On OMAP4 control pad are not addressable from control
+ * core base. So the common omap_ctrl_read/write APIs breaks
+ * Hence export separate APIs to manage the omap4 pad control
+ * registers. This APIs will work only for OMAP4
+ */
+
+u32 omap4_ctrl_pad_readl(u16 offset)
+{
+        return __raw_readl(OMAP4_CTRL_PAD_REGADDR(offset));
+}
+
+void omap4_ctrl_pad_writel(u32 val, u16 offset)
+{
+        __raw_writel(val, OMAP4_CTRL_PAD_REGADDR(offset));
+}
+
 #if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM)
 /*
  * Clears the scratchpad contents in case of cold boot-