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authorKevin Hilman <khilman@deeprootsystems.com>2009-06-23 13:30:23 +0300
committerTony Lindgren <tony@atomide.com>2009-06-23 13:30:23 +0300
commit8e25ad964aac0bf6b30dd013303750089f819679 (patch)
treef4d0041a1a858153234ae2fbbe0d1d849babc46f /arch/arm/mach-omap2/id.c
parent091a58af0ba1765d80b1e74382c7572baceb1bdc (diff)
OMAP2/3: Add omap_type() for determining GP/EMU/HS
The omap_type() function is added and returns the DEVICETYPE field of the CONTROL_STATUS register. The result can be used for conditional code based on whether device is GP (general purpose), EMU or HS (high security). Also move the type defines so omap1 code compile does not require ifdefs for sections using these defines. This code is needed for the following fix to set the SRAM size correctly for HS omaps. Also at least PM and watchdog code will need this function. Signed-off-by: Kevin Hilman <khilman@ti.deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/id.c')
-rw-r--r--arch/arm/mach-omap2/id.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 458990e20c6..a98201cc265 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -48,6 +48,28 @@ int omap_chip_is(struct omap_chip_id oci)
}
EXPORT_SYMBOL(omap_chip_is);
+int omap_type(void)
+{
+ u32 val = 0;
+
+ if (cpu_is_omap24xx())
+ val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);
+ else if (cpu_is_omap34xx())
+ val = omap_ctrl_readl(OMAP343X_CONTROL_STATUS);
+ else {
+ pr_err("Cannot detect omap type!\n");
+ goto out;
+ }
+
+ val &= OMAP2_DEVICETYPE_MASK;
+ val >>= 8;
+
+out:
+ return val;
+}
+EXPORT_SYMBOL(omap_type);
+
+
/*----------------------------------------------------------------------------*/
#define OMAP_TAP_IDCODE 0x0204