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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2009-06-23 10:30:23 (GMT) |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-06-23 10:30:23 (GMT) |
| commit | 8e25ad964aac0bf6b30dd013303750089f819679 (patch) | |
| tree | f4d0041a1a858153234ae2fbbe0d1d849babc46f /arch/arm/mach-omap2/id.c | |
| parent | 091a58af0ba1765d80b1e74382c7572baceb1bdc (diff) | |
| download | linux-8e25ad964aac0bf6b30dd013303750089f819679.tar.xz | |
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.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index 458990e..a98201c 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 |