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ad48ce74f7
linux/arch/arm
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Andrew Victor ad48ce74f7 [ARM] 4989/1: [AT91] SAM9 ClockSource / ClockEvents 
Update AT91SAM9/CAP9 PIT driver to use generic time and clockevent
infrastructure:

 - Clocksource gives sub-microsecond timestamp precision, assuming
 memory is clocked at over 16 MHz.  It's less than a 32 bit counter,
 unless it's is also generating IRQs.

 - Clockevent device supports periodic mode only; no oneshot
 support from this hardware.  No IRQs generated unless it's the
 active clocksource.

Later, another timer (probably from a TC module) can provide a oneshot
clockevent device to get NO_HZ and High-Res-Timer behavior.

This also updates the timekeeping to use the actual master clock rate
on the system, instead of compile-time <asm/arch/timex.h> constants
matching what Atmel's EK boards use.  (Product boards may well differ!)

Plus cleanup:  rename "*_timer*" symbols to "*_pit*" (there are other
timers, but only one PIT); shorter lines; remove needless CPP stuff;
make several symbols static; etc.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-17 15:55:54 +01:00
..
boot Merge branch 'orion' into devel 2008-01-28 13:21:30 +00:00
common [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
configs [ARM] 4980/1: [AT91] emQbit ECB_AT91 board support 2008-04-17 15:55:51 +01:00
kernel [ARM] 4870/1: fix signal return code when enable CONFIG_OABI_COMPAT 2008-03-20 15:59:31 +00:00
lib
mach-aaec2000 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-at91 [ARM] 4989/1: [AT91] SAM9 ClockSource / ClockEvents 2008-04-17 15:55:54 +01:00
mach-clps711x [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-clps7500 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-davinci [ARM] constify function pointer tables 2008-02-09 22:46:44 +00:00
mach-ebsa110 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-ep93xx Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-footbridge [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-h720x [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-imx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-integrator Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-iop13xx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-iop32x [ARM] 4865/1: Register the F75375 device in the GLAN Tank platform code 2008-03-20 15:59:30 +00:00
mach-iop33x
mach-ixp4xx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-ixp23xx [ARM] remove duplicate includes 2008-01-26 14:50:07 +00:00
mach-ixp2000 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-ks8695 Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-l7200
mach-lh7a40x [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-msm [ARM] msm: dma support for MSM7X00A 2008-01-26 14:39:14 +00:00
mach-mx3 [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-netx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-ns9xxx [ARM] 4851/1: ns9xxx: fix size of gpiores 2008-03-08 15:53:45 +00:00
mach-omap1 ARM: OMAP1: Fix typo in OMAP1 MPU clock source initialization 2008-03-20 16:57:54 +02:00
mach-omap2 ARM: OMAP2: Register the L4 io bus to boot OMAP2 2008-03-06 13:28:06 +02:00
mach-orion [ARM] 4856/1: Orion: initialise the sixth PCIe MBUS mapping window as well 2008-03-08 15:53:49 +00:00
mach-pnx4008 [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-pxa [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-realview [ARM] 4822/1: RealView: Change the REALVIEW_MPCORE configuration option 2008-02-04 17:52:28 +00:00
mach-rpc Rename: linux/pata_platform.h to linux/ata_platform.h 2008-02-06 06:54:17 -05:00
mach-s3c2400
mach-s3c2410 Merge branches 'at91', 'ep93xx', 'iop', 'kprobes', 'ks8695', 'misc', 'msm', 's3c2410', 'sa1100' and 'vfp' into devel 2008-01-28 13:21:21 +00:00
mach-s3c2412 [ARM] 4791/1: S3C2412: Make fclk a parent of msysclk 2008-01-28 13:20:52 +00:00
mach-s3c2440 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code 2008-01-28 13:20:52 +00:00
mach-s3c2442 [ARM] 4794/1: S3C24XX: Comonise S3C2440 and S3C2442 clock code 2008-01-28 13:20:52 +00:00
mach-s3c2443 Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
mach-sa1100 [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
mach-shark [ARM] Fix timer damage from d3d74453c3 2008-01-28 10:17:12 +00:00
mach-versatile
mm [ARM] 4864/1: Enable write buffer coalescing on IOP 2008-03-20 15:59:30 +00:00
nwfpe
oprofile Driver core: change sysdev classes to use dynamic kobject names 2008-01-24 20:40:40 -08:00
plat-iop [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
plat-mxc
plat-omap ARM: OMAP: Fix DMA CLINK mask, clear spurious interrupt 2008-03-20 16:57:54 +02:00
plat-s3c
plat-s3c24xx [ARM] replace remaining __FUNCTION__ occurrences 2008-03-06 12:18:18 +00:00
tools [ARM] Update mach-types 2008-01-26 14:47:48 +00:00
vfp [ARM] 4583/1: ARMv7: Add VFPv3 support 2008-01-26 14:41:28 +00:00
Kconfig ARM: OMAP: Fix clockevent support for hrtimers 2008-03-20 16:56:09 +02:00
Kconfig-nommu
Kconfig.debug [ARM] CONFIG_DEBUG_STACK_USAGE 2008-01-26 14:50:06 +00:00
Makefile [ARM] 4853/1: include uImage target in make help 2008-03-08 15:53:47 +00:00