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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-10 21:10:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-05-10 21:10:48 -0700 |
| commit | 3e1b83ab3912a6f583897635bee0a2e0cd1545f7 (patch) | |
| tree | ce89473abe12bd31664ee302a098a46a2079ce95 /arch/x86/kernel/geode_32.c | |
| parent | 8e3e076c5a78519a9f64cd384e8f18bc21882ce0 (diff) | |
| parent | 82fd866701881623d69fe280dbac06ddff1fdef9 (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: rdc: leds build/config fix
x86: sysfs cpu?/topology is empty in 2.6.25 (32-bit Intel system)
x86: revert commit 709f744 ("x86: bitops asm constraint fixes")
x86: restrict keyboard io ports reservation to make ipmi driver work
x86: fix fpu restore from sig return
x86: remove spew print out about bus to node mapping
x86: revert printk format warning change which is for linux-next
x86: cleanup PAT cpu validation
x86: geode: define geode_has_vsa2() even if CONFIG_MGEODE_LX is not set
x86: GEODE: cache results from geode_has_vsa2() and uninline
x86: revert geode config dependency
Diffstat (limited to 'arch/x86/kernel/geode_32.c')
| -rw-r--r-- | arch/x86/kernel/geode_32.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/kernel/geode_32.c b/arch/x86/kernel/geode_32.c index 9dad6ca6cd70..e8edd63ab000 100644 --- a/arch/x86/kernel/geode_32.c +++ b/arch/x86/kernel/geode_32.c @@ -161,6 +161,25 @@ void geode_gpio_setup_event(unsigned int gpio, int pair, int pme) } EXPORT_SYMBOL_GPL(geode_gpio_setup_event); +int geode_has_vsa2(void) +{ + static int has_vsa2 = -1; + + if (has_vsa2 == -1) { + /* + * The VSA has virtual registers that we can query for a + * signature. + */ + outw(VSA_VR_UNLOCK, VSA_VRC_INDEX); + outw(VSA_VR_SIGNATURE, VSA_VRC_INDEX); + + has_vsa2 = (inw(VSA_VRC_DATA) == VSA_SIG); + } + + return has_vsa2; +} +EXPORT_SYMBOL_GPL(geode_has_vsa2); + static int __init geode_southbridge_init(void) { if (!is_geode()) |