From bff431e49ff531a343fbb2b4426e313000844f32 Mon Sep 17 00:00:00 2001 From: Carlos Corbacho Date: Tue, 5 Feb 2008 02:17:04 +0000 Subject: ACPI: WMI: Add ACPI-WMI mapping driver The following is an implementation of the Windows Management Instrumentation (WMI) ACPI interface mapper (PNP0C14). What it does: Parses the _WDG method and exports functions to process WMI method calls, data block query/ set commands (both based on GUID) and does basic event handling. How: WMI presents an in kernel interface here (essentially, a minimal wrapper around ACPI) (const char *guid assume the 36 character ASCII representation of a GUID - e.g. 67C3371D-95A3-4C37-BB61-DD47B491DAAB) wmi_evaluate_method(const char *guid, u8 instance, u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out) wmi_query_block(const char *guid, u8 instance, struct acpi_buffer *out) wmi_set_block(const char *guid, u38 instance, const struct acpi_buffer *in) wmi_install_notify_handler(acpi_notify_handler handler); wmi_remove_notify_handler(void); wmi_get_event_data(u32 event, struct acpi_buffer *out) wmi_has_guid(const char guid*) wmi_has_guid() is a helper function to find if a GUID exists or not on the system (a quick and easy way for WMI dependant drivers to see if the the method/ block they want exists, since GUIDs are supposed to be unique). Event handling - allow a WMI based driver to register a notifier handler for each GUID with WMI. When a notification is sent to a GUID in WMI, the handler registered with WMI is then called (it is left to the caller to ask for the WMI event data associated with the GUID, if needed). What it won't do: Unicode - The MS article[1] calls for converting between ASCII and Unicode (or vice versa) if a GUID is marked as "string". This is left up to the calling driver. Handle a MOF[1] - the WMI mapper just exports methods, data and events to userspace. MOF handling is down to userspace. Userspace interface - this will be added later. [1] http://www.microsoft.com/whdc/system/pnppwr/wmi/wmi-acpi.mspx === ChangeLog == v1 (2007-10-02): * Initial release v2 (2007-10-05): * Cleaned up code - split up super "wmi_evaluate_block" -> each external symbol now handles its own ACPI calls, rather than handing off to a "super" method (and in turn, is a lot simpler to read) * Added a find_guid() symbol - return true if a given GUID exists on the system * wmi_* functions now return type acpi_status (since they are just fancy wrappers around acpi_evaluate_object()) * Removed extra debug code v3 (2007-10-27) * More code clean up - now passes checkpatch.pl * Change data block calls - ref MS spec, method ID is not required for them, so drop it from the function parameters. * Const'ify guid in the function call parameters. * Fix _WDG buffer handling - copy the data to our own private structure. * Change WMI from tristate to bool - otherwise the external functions are not exported in linux/acpi.h if you try to build WMI as a module. * Fix more flag comparisons. * Add a maintainers entry - since I wrote this, I should take the blame for it. v4 (2007-10-30) * Add missing brace from after fixing checkpatch errors. * Rewrote event handling - allow external drivers to register with WMI to handle WMI events * Clean up flags and sanitise flag handling v5 (2007-11-03) * Add sysfs interface for userspace. Export events over netlink again. * Remove module left overs, fully convert to built-in driver. * Tweak in-kernel API to use u8 for instance, since this is what the GUID blocks use (so instance cannot be greater than u8). * Export wmi_get_event_data() for in kernel WMI drivers. v6 (2007-11-07) * Split out userspace into a different patch v7 (2007-11-20) * Fix driver to handle multiple PNP0C14 devices - store all GUIDs using the kernel's built in list functions, and just keep adding to the list every time we handle a PNP0C14 devices - GUIDs will always be unique, and WMI callers do not know or care about different devices. * Change WMI event handler registration to use its' own event handling struct; we should not pass an acpi_handle down to any WMI based drivers - they should be able to function with only the calls provided in WMI. * Update my e-mail address v8 (2007-11-28) * Convert back to a module. * Update Kconfig to default to building as a module. * Remove an erroneous printk. * Simply comments for string flag (since we now leave the handling to the caller). v9 (2007-12-07) * Add back missing MODULE_DEVICE_TABLE for autoloading * Checkpatch fixes v10 (2007-12-12) * Workaround broken GUIDs declared expensive without a WCxx method. * Minor cleanups v11 (2007-12-17) * More fixing for broken GUIDs declared expensive without a WCxx method. * Add basic EmbeddedControl region handling. v12 (2007-12-18) * Changed EC region handling code, as per Alexey's comments. v13 (2007-12-27) * Changed event handling so that we can have one event handler registered per GUID, as per Matthew Garrett's suggestion. v14 (2008-01-12) * Remove ACPI debug statements v15 (2008-02-01) * Replace two remaining 'x == NULL' type tests with '!x' v16 (2008-02-05) * Change MAINTAINERS entry, as I am not, and never have been, paid to work on WMI * Remove 'default' line from Kconfig Signed-off-by: Carlos Corbacho CC: Matthew Garrett CC: Alexey Starikovskiy Signed-off-by: Len Brown --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index da30a72a839..12e26d772e7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -252,6 +252,13 @@ L: linux-acpi@vger.kernel.org W: http://acpi.sourceforge.net/ S: Supported +ACPI WMI DRIVER +P: Carlos Corbacho +M: carlos@strangeworlds.co.uk +L: linux-acpi@vger.kernel.org +W: http://www.lesswatts.org/projects/acpi/ +S: Maintained + ADM1025 HARDWARE MONITOR DRIVER P: Jean Delvare M: khali@linux-fr.org -- cgit v1.2.3 From 745a5d2126926808295742932d0e36d485efa485 Mon Sep 17 00:00:00 2001 From: Carlos Corbacho Date: Tue, 5 Feb 2008 02:17:10 +0000 Subject: acer-wmi: Add driver for newer Acer laptops This is a driver for newer Acer (and Wistron) laptops. It adds wireless radio and bluetooth control, and on some laptops, exposes the mail LED and LCD backlight. v1: * Initial release v2: * Replace left over ACPI references with WMI * Add GUID based autoloading (depends on future work to WMI) * Add DMI based autoloading (backup solution until WMI sysfs/ class work is available) * Checkpatch fixes v3: * Add new EC quirks for Aspire 3100 & 5100, and Extensa 5220 v4: * Simplified internal handling of WMID and AMW0 devices * Add autodetection for bluetooth and maximum brightness on AMW0 V2 and WMID laptops. v5: * Add EC quirk for Medion MD 98000 * Add autodetection for AMW0, and mail LED on AMW0 and AMW0 V2. * Improve error handling * Fix AMW0 V2 bluetooth and wireless, by using both WMID and AMW0 methods to ensure that the correct value is always set. v6: * Fix 'use before initialisation' bug with quirks. v7 * Fix bug on AMW0 where acer-wmi would exit if a mail LED was not detected. * Add Acer Aspire 9110 mail LED support * Fix section mismatch warnings Signed-off-by: Carlos Corbacho CC: Matthew Garrett Signed-off-by: Len Brown --- MAINTAINERS | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index 12e26d772e7..2eaeef4b2fb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -202,6 +202,13 @@ L: linux-scsi@vger.kernel.org W: http://www.adaptec.com/ S: Supported +ACER WMI LAPTOP EXTRAS +P: Carlos Corbacho +M: carlos@strangeworlds.co.uk +L: aceracpi@googlegroups.com (subscribers-only) +W: http://code.google.com/p/aceracpi +S: Maintained + ACPI P: Len Brown M: len.brown@intel.com -- cgit v1.2.3 From dd8cd7793781c87be47bbfee65efa3fb5110f898 Mon Sep 17 00:00:00 2001 From: Carlos Corbacho Date: Tue, 5 Feb 2008 02:17:15 +0000 Subject: tc1100-wmi: Add driver for HP Compaq TC1100 Tablets This is based on the 2004 out-of-tree work of Jamey Hicks, to add support via WMI for controlling the jog dial and wireless on these tablets. v1: Original release v2: As per Joshua Wise's comments, change bluetooth to jogdial (an error from the original driver). Signed-off-by: Carlos Corbacho CC: Matthew Garrett CC: Jamey Hicks CC: Joshua Wise Signed-off-by: Len Brown --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'MAINTAINERS') diff --git a/MAINTAINERS b/MAINTAINERS index 2eaeef4b2fb..db4bc14dadb 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1794,6 +1794,11 @@ P: Jaroslav Kysela M: perex@perex.cz S: Maintained +HP COMPAQ TC1100 TABLET WMI EXTRAS DRIVER +P: Carlos Corbacho +M: carlos@strangeworlds.co.uk +S: Odd Fixes + HPET: High Precision Event Timers driver (hpet.c) P: Clemens Ladisch M: clemens@ladisch.de -- cgit v1.2.3