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linux-sg2042
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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  input: i8042 - add runtime check in x86's i8042_platform_init
  Revert "Input: fixup X86_MRST selects"
  Revert "Input: do not force selecting i8042 on Moorestown"
  x86, mrst: Add i8042_detect API for Moorestwon platform
  x86: Add i8042 pre-detection hook to x86_platform_ops
  x86, platform: Export x86_platform to modules
This commit is contained in:
Linus Torvalds 2010-07-13 17:31:11 -07:00
parent 177dd7e1eb 5cdfa1c3bb
commit bcefc8d0d3
7 changed files with 29 additions and 5 deletions
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2
arch/x86/include/asm/x86_init.h
View File

@ -142,6 +142,7 @@ struct x86_cpuinit_ops {
* @set_wallclock: set time back to HW clock
* @is_untracked_pat_range exclude from PAT logic
* @nmi_init enable NMI on cpus
* @i8042_detect pre-detect if i8042 controller exists
*/
struct x86_platform_ops {
unsigned long (*calibrate_tsc)(void);
@ -150,6 +151,7 @@ struct x86_platform_ops {
void (*iommu_shutdown)(void);
bool (*is_untracked_pat_range)(u64 start, u64 end);
void (*nmi_init)(void);
int (*i8042_detect)(void);
};
extern struct x86_init_ops x86_init;

7
arch/x86/kernel/mrst.c
View File

@ -216,6 +216,12 @@ static void __init mrst_setup_boot_clock(void)
setup_boot_APIC_clock();
};
/* MID systems don't have i8042 controller */
static int mrst_i8042_detect(void)
{
return 0;
}
/*
* Moorestown specific x86_init function overrides and early setup
* calls.
@ -233,6 +239,7 @@ void __init x86_mrst_early_setup(void)
x86_cpuinit.setup_percpu_clockev = mrst_setup_secondary_clock;
x86_platform.calibrate_tsc = mrst_calibrate_tsc;
x86_platform.i8042_detect = mrst_i8042_detect;
x86_init.pci.init = pci_mrst_init;
x86_init.pci.fixup_irqs = x86_init_noop;

7
arch/x86/kernel/x86_init.c
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@ -5,6 +5,7 @@
*/
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/module.h>
#include <asm/bios_ebda.h>
#include <asm/paravirt.h>
@ -85,6 +86,7 @@ struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
};
static void default_nmi_init(void) { };
static int default_i8042_detect(void) { return 1; };
struct x86_platform_ops x86_platform = {
.calibrate_tsc = native_calibrate_tsc,
@ -92,5 +94,8 @@ struct x86_platform_ops x86_platform = {
.set_wallclock = mach_set_rtc_mmss,
.iommu_shutdown = iommu_shutdown_noop,
.is_untracked_pat_range = is_ISA_range,
.nmi_init = default_nmi_init
.nmi_init = default_nmi_init,
.i8042_detect = default_i8042_detect
};
EXPORT_SYMBOL_GPL(x86_platform);

4
drivers/input/keyboard/Kconfig
View File

@ -69,11 +69,11 @@ config KEYBOARD_ATARI
module will be called atakbd.
config KEYBOARD_ATKBD
tristate "AT keyboard" if EMBEDDED || !X86 || X86_MRST
tristate "AT keyboard" if EMBEDDED || !X86
default y
select SERIO
select SERIO_LIBPS2
select SERIO_I8042 if X86 && !X86_MRST
select SERIO_I8042 if X86
select SERIO_GSCPS2 if GSC
help
Say Y here if you want to use a standard AT or PS/2 keyboard. Usually

2
drivers/input/mouse/Kconfig
View File

@ -17,7 +17,7 @@ config MOUSE_PS2
default y
select SERIO
select SERIO_LIBPS2
select SERIO_I8042 if X86 && !X86_MRST
select SERIO_I8042 if X86
select SERIO_GSCPS2 if GSC
help
Say Y here if you have a PS/2 mouse connected to your system. This

2
drivers/input/serio/Kconfig
View File

@ -22,7 +22,7 @@ config SERIO_I8042
tristate "i8042 PC Keyboard controller" if EMBEDDED || !X86
default y
depends on !PARISC && (!ARM || ARCH_SHARK || FOOTBRIDGE_HOST) && \
(!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN && !X86_MRST
(!SUPERH || SH_CAYMAN) && !M68K && !BLACKFIN
help
i8042 is the chip over which the standard AT keyboard and PS/2
mouse are connected to the computer. If you use these devices,

10
drivers/input/serio/i8042-x86ia64io.h
View File

@ -7,6 +7,10 @@
* the Free Software Foundation.
*/
#ifdef CONFIG_X86
#include <asm/x86_init.h>
#endif
/*
* Names.
*/
@ -840,6 +844,12 @@ static int __init i8042_platform_init(void)
{
int retval;
#ifdef CONFIG_X86
/* Just return if pre-detection shows no i8042 controller exist */
if (!x86_platform.i8042_detect())
return -ENODEV;
#endif
/*
* On ix86 platforms touching the i8042 data register region can do really
* bad things. Because of this the region is always reserved on ix86 boxes.