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path: root/drivers/input/serio/i8042.c
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* Input: i8042 - fix AUX port detection with some chipsRoland Scheidegger2007-05-081-6/+29
| | | | | | | | | | | | The i8042 driver fails detection of the AUX port with some chips, because they apparently do not change the I8042_CTR_AUXDIS bit immediately. This is known to affect at least HP500/HP510 notebooks, consequently the built-in touchpad will not work. The patch will simply reread the value until it gets the expected value or a retry limit is hit, without touching other workaround code in the same area. Signed-off-by: Roland Scheidegger <sroland@tungstengraphics.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6Dmitry Torokhov2007-05-011-2/+8
|\ | | | | | | | | | | | | Conflicts: drivers/usb/input/Makefile drivers/usb/input/gtco.c
| * Input: i8042 - another attempt to fix AUX delivery checksDmitry Torokhov2007-03-071-2/+8
| | | | | | | | | | | | | | Do not assume that AUX_LOOP command is broken unless it completes successfully but returns wrong (unexpected) data. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* | Input: i8042 - disable interfaces when switching to legacy modeDmitry Torokhov2007-04-121-0/+7
|/ | | | | | | Disable both keyboard and auxiliary interfaces before switching to legacy mode to prevent atkbd from getting "empty" interrupts. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: remove obsolete setup parameters from input driversDmitry Torokhov2007-02-181-7/+0
| | | | | | | They have been marked as __obsolete_setup() for several years, it is time for them to go. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - let serio bus suspend portsDmitry Torokhov2007-02-181-27/+29
| | | | | | | Let serio subsystem take care of suspending the ports; concentrate on suspending/resuming the controller itself. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - fix AUX IRQ delivery checkDmitry Torokhov2007-02-101-1/+4
| | | | | | | | On boxes that do not implement AUX LOOP command we can not verify AUX IRQ delivery and must assume that it is wired properly. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - really suppress ACK/NAK during panic blinkDmitry Torokhov2007-01-181-3/+4
| | | | | | | | On some boxes panic blink procedure manages to send both bytes to keyboard contoller before getting first ACK so we need to make i8042_suppress_kbd_ack a counter instead of boolean. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - fix shutdown issue on some boxes with active MUXesDmitry Torokhov2006-11-171-7/+11
| | | | | | | | | | | MUX error handling has a workaround for KBCs that get confused which port data came from and signal MUXERR while data is actually good. Unfortunately this workaround hurts with KBCs that signal timeouts as 0xfc (spec says that only 0xfd, 0xfe and 0xff are alowed with MUXERR) since it causes endless attempts to rescan i8042 serio ports. The solution is to treat 0xfc as timeout (0xfe). Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - remove unneeded call to i8042_interrupt()Dmitry Torokhov2006-11-021-18/+3
| | | | | | | | | | Remove call to i8042_interrupt() from i8042_aux_write(). According to Vojtech it may cause problems with older controllers if it is called right after real interrupt. Also it is not needed anymore since we register IRQs early and not waiting for serio ports to be opened. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - supress ACK/NAKs when blinking during panicDmitry Torokhov2006-10-111-2/+11
| | | | | | This allows using SysRq and not fill logs with complaints from atkbd. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-051-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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)
* Input: i8042 - get rid of polling timerDmitry Torokhov2006-09-101-353/+388
| | | | | | | | Remove polling timer that was used to detect keybord/mice hotplug and register both IRQs right away instead of waiting for a driver to attach to a port. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* [PATCH] irq-flags: misc drivers: Use the new IRQF_ constantsThomas Gleixner2006-07-021-2/+2
| | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-301-1/+0
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* Input: i8042 - convert to the new platform device interfaceDmitry Torokhov2005-12-281-49/+67
| | | | | | | | Do not use platform_device_register_simple() as it is going away, implement ->probe() and ->remove() functions so manual binding and unbinding will work with this driver. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* [DRIVER MODEL] Convert platform drivers to use struct platform_driverRussell King2005-11-091-9/+10
| | | | | | | | | This allows us to eliminate the casts in the drivers, and eventually remove the use of the device_driver function pointer methods for platform device drivers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* Create platform_device.h to contain all the platform device details.Russell King2005-10-291-0/+1
| | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] DRIVER MODEL: Get rid of the obsolete tri-level suspend/resume callbacksRussell King2005-10-281-9/+4
| | | | | | | | | | | | | | | | In PM v1, all devices were called at SUSPEND_DISABLE level. Then all devices were called at SUSPEND_SAVE_STATE level, and finally SUSPEND_POWER_DOWN level. However, with PM v2, to maintain compatibility for platform devices, I arranged for the PM v2 suspend/resume callbacks to call the old PM v1 suspend/resume callbacks three times with each level in order so that existing drivers continued to work. Since this is obsolete infrastructure which is no longer necessary, we can remove it. Here's an (untested) patch to do exactly that. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Input: i8042 - use kzalloc instead of kcallocDmitry Torokhov2005-09-101-3/+3
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - add i8042.nokbd module option to allow supressingDmitry Torokhov2005-09-041-4/+18
| | | | | | creation of keyboard port. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: make i8042_platform_init return 'real' error codeDmitry Torokhov2005-09-041-2/+3
| | | | Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - clean up initialization code; abort if weDmitry Torokhov2005-09-041-78/+100
| | | | | | can't create all ports. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: i8042 - don't use negation to mark AUX dataDmitry Torokhov2005-07-151-28/+32
| | | | | | | | | | | Currently i8042_command() negates data coming from the AUX port of keyboard controller; this is not a very reliable indicator. Change i8042_command() to fail if response to I8042_CMD_AUX_LOOP is not coming from AUX channel and get rid of negation. Based on patch by Vojtech Pavlik. Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* [PATCH] RCU: clean up a few remaining synchronize_kernel() callsPaul E. McKenney2005-06-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2.6.12-rc6-mm1 has a few remaining synchronize_kernel()s, some (but not all) in comments. This patch changes these synchronize_kernel() calls (and comments) to synchronize_rcu() or synchronize_sched() as follows: - arch/x86_64/kernel/mce.c mce_read(): change to synchronize_sched() to handle races with machine-check exceptions (synchronize_rcu() would not cut it given RCU implementations intended for hardcore realtime use. - drivers/input/serio/i8042.c i8042_stop(): change to synchronize_sched() to handle races with i8042_interrupt() interrupt handler. Again, synchronize_rcu() would not cut it given RCU implementations intended for hardcore realtime use. - include/*/kdebug.h comments: change to synchronize_sched() to handle races with NMIs. As before, synchronize_rcu() would not cut it... - include/linux/list.h comment: change to synchronize_rcu(), since this comment is for list_del_rcu(). - security/keys/key.c unregister_key_type(): change to synchronize_rcu(), since this is interacting with RCU read side. - security/keys/process_keys.c install_session_keyring(): change to synchronize_rcu(), since this is interacting with RCU read side. Signed-off-by: "Paul E. McKenney" <paulmck@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Input: Only write the CTR in i8042 resume function. Reading it isVojtech Pavlik2005-05-281-20/+28
| | | | | | | wrong, since it may (will) contain nonsensical data. Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: Remove (now) unused variable in i8042.cVojtech Pavlik2005-05-281-2/+0
| | | | | Signed-off-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-161-0/+1116
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!
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