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path: root/drivers/input/mouse/alps.c
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2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-09-10Input: constify psmouse driverHelge Deller
Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-06-26Input: fix potential overflows in driver/input/mouseDmitry Torokhov
Change all sprintfs into snprintfs to make sure we won't stomp on data adjacent to our buffers. Noticed by Wouter Paesen <wouter@kangaroot.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-05-29Input: alps - fix old protocol decodingYotam Medini
Correct touchpad left & right keys assignments for ALPS_OLDPROTO that were swapped. Old protocol is used on UMAX ActionBook-530T notebook. Signed-off-by: Yotam Medini <yotam.medini@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-01-14Input: psmouse - attempt to re-synchronize mouse every 5 secondsDmitry Torokhov
This should help driver to deal vith KVMs that reset mice when switching between boxes. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-12-21Input: ALPS - add signature for HP ze1115Larry Finger
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-12-14[PATCH] Input: ALPS - correctly report button presses on Fujitsu Siemens S6010Vojtech Pavlik
Without this patch Forward and Backward buttons on the touchpad do not generate any events. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] drivers/input/mouse: convert to dynamic input_dev allocationDmitry Torokhov
Input: convert drivers/input/mouse to dynamic input_dev allocation This is required for input_dev sysfs integration Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-04Input: ALPS - fix wheel decodingVojtech Pavlik
Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-07-11Input: ALPS - unconditionally enable tapping modePeter Osterlund
The condition in alps_init() was also inverted and the driver was enabling tapping mode only if it was already enabled. Signed-off-by: Peter Osterlund <petero2@telia.com> Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-07-11Input: ALPS - fix resume (for DualPoints)David Moore
The driver would not reset pass-through mode when performing resume of a DualPoint touchpad causing it to stop working until next reboot. Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-06-27Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/dtor/input.git manuallyLinus Torvalds
Some manual fixups required due to clashes with the PF_FREEZE cleanups.
2005-06-16[PATCH] ALPS: fix enabling hardware tappingDmitry Torokhov
It looks like logic for enabling hardware tapping in ALPS driver was inverted and we enable it only if it was already enabled by BIOS or firmware. I have a confirmation from one user that the patch below fixes the problem for him and it might be beneficial if we could get it into 2.6.12. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-01Input: add ps2_drain() to libps2 to allow reading and discardingDmitry Torokhov
given number of bytes from device. Change ps2_command to allow using 0 as command ID and actually pass it to the device instead of working as a drain. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-06-01Input: ALPS - fix forward/back buttons on Ahtec laptop.Ivan Casado Ruiz
I have an Ahtec laptop with a ALPS GlidePoint device, with 4 buttons. With Linux hernel 2.6.12rc4 and rc5 I'm unable to use the vertical scroll buttons (BACK and FORWARD). BACK gets detected as BTN_MIDDLE and FORWARD is undetected. I've modified the drivers/input/mouse/alps.c from 2.6.12rc5 and now it works fine! Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-05-29Input: whitespace fixes in drivers/input/mouseDmitry Torokhov
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2005-05-17[PATCH] ALPS resume fixDmitry Torokhov
ALPS needs to be reset for detection to work reliably when reconnecting. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Cc: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-17[PATCH] alps printk tidyAndrew Morton
Make the alps printk output look consistent. Cc: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!