ACPI: thinkpad-acpi: add DMI-based modalias

[Henrique de Moraes Holschuh <hmh-N3TV7GIv+o9fyO9Q7EP/yw@public.gmane.org>]

Add DMI-based aliases to allow module autoloading on select thinkpads.

The aliases will do nothing unless the dmi-based-module-autoloading.patch
patch from Lennart Poettering <mzxreary-uLTowLwuiw4b1SvskN2V4Q@public.gmane.org> is applied.  Lennart's
patch has been accepted by greghk and will be merged eventually.

Signed-off-by: Henrique de Moraes Holschuh <hmh-N3TV7GIv+o9fyO9Q7EP/yw@public.gmane.org>
Cc: Lennart Poettering <mzxreary-uLTowLwuiw4b1SvskN2V4Q@public.gmane.org>
---
 drivers/misc/thinkpad_acpi.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 95c0b96..22a5f22 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -92,6 +92,29 @@ MODULE_LICENSE("GPL");
 /* Please remove this in year 2009 */
 MODULE_ALIAS("ibm_acpi");
 
+/*
+ * DMI matching for module autoloading
+ *
+ * See http://thinkwiki.org/wiki/List_of_DMI_IDs
+ * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads
+ *
+ * Only models listed in thinkwiki will be supported, so add yours
+ * if it is not there yet.
+ */
+#define IBM_BIOS_MODULE_ALIAS(__type) \
+	MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW")
+
+/* Non-ancient thinkpads */
+MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*");
+MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*");
+
+/* Ancient thinkpad BIOSes have to be identified by
+ * BIOS type or model number, and there are far less
+ * BIOS types than model numbers... */
+IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]");
+IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]");
+IBM_BIOS_MODULE_ALIAS("K[U,X-Z]");
+
 #define __unused __attribute__ ((unused))
 
 /****************************************************************************
-- 
1.5.2.1


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