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Hartley Sweeten 02239f0a42 [ARM] 5577/2: ep93xx: syscon locked register functions 
Add core functions to handle writes to the ep93xx software locked
registers.

There are a number of registers in the EP93xx System Controller
that require a write to the software lock register before they
can be updated. This patch adds a number of exported functions
to the ep93xx core that handle this access.

The software locked clock divider registers, VidClkDiv, MIRClkDiv,
I2SClkDiv and KeyTchClkDiv would typically involve writing a
specific value to the register. To support this the
ep93xx_syscon_swlocked_write() function is provided.

For the DeviceCfg register it's more typical to only need to
set or clear a single bit. A generic ep93xx_devcfg_set_clear()
function is provided to handle both operations. Two inline
functions, ep93xx_devcfg_set_bits() and ep93xx_devcfg_clear_bits()
are also provided to improve code readability.

In addition, the remaining bits in the System Controller Device
Config Register have been documented and the previously defined
names shortened.

All code paths that use this functionality have been updated
except for arch/arm/kernel/crunch.c. That code is in a context
switch path, which is not reentrant, so it is safe against itself.

Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Matthias Kaehlcke <matthias@kaehlcke.net>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-09 16:10:51 +01:00
..
boot [ARM] Add old Feroceon support to compressed/head.S 2009-06-19 13:38:53 -04:00
common [ARM] 5556/1: Fix the irq_desc.cpu references 2009-06-19 15:11:16 +01:00
configs [ARM] MINI2440: Create a mini2440_defconfig file 2009-06-15 22:10:24 +01:00
include/asm [ARM] wire up rt_tgsigqueueinfo and perf_counter_open 2009-06-20 22:25:45 +01:00
kernel [ARM] 5577/2: ep93xx: syscon locked register functions 2009-07-09 16:10:51 +01:00
lib Merge branch 'copy_user' of git://git.marvell.com/orion into devel 2009-06-14 10:59:32 +01:00
mach-aaec2000 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-at91 [ARM] 5525/1: AFEB9260: fix for MMC support 2009-05-29 20:17:40 +01:00
mach-clps711x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-davinci Merge git://git.infradead.org/mtd-2.6 2009-06-22 16:56:22 -07:00
mach-ebsa110 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ep93xx [ARM] 5577/2: ep93xx: syscon locked register functions 2009-07-09 16:10:51 +01:00
mach-footbridge [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-gemini Gemini: Fix SRAM/ROM location after memory swap 2009-05-28 16:42:25 +03:00
mach-h720x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-integrator [ARM] 5517/1: integrator: don't put clock lookups in __initdata 2009-05-18 17:43:16 +01:00
mach-iop13xx dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64) 2009-04-07 08:31:10 -07:00
mach-iop32x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-iop33x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ixp4xx IXP4xx: Change QMgr function names to qmgr_stat_*_watermark and clean the comments. 2009-05-25 13:25:34 +02:00
mach-ixp23xx [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-ixp2000 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-kirkwood [ARM] Kirkwood: platform device registration for the crypto engine 2009-06-08 13:05:03 -04:00
mach-ks8695 Merge branch 'highmem' into devel 2009-03-24 22:47:45 +00:00
mach-l7200 [ARM] mach-l7200: fix spelling of SYS_CLOCK_OFF 2009-05-18 11:25:08 +01:00
mach-lh7a40x [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-loki [ARM] add coherent DMA mask for mv643xx_eth 2009-05-22 17:05:53 -04:00
mach-mmp [ARM] pxa: add PWM devices support for pxa168/910 2009-06-05 10:32:06 +08:00
mach-msm clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-mv78xx0 [ARM] orion: convert gpio to use gpiolib 2009-06-08 13:04:57 -04:00
mach-mx1 mx1ads: rename mxc_map_io to mx1_map_io 2009-05-07 16:20:22 +02:00
mach-mx2 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-14 13:42:43 -07:00
mach-mx3 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-14 13:42:43 -07:00
mach-netx [ARM] VIC: Add power management device 2009-05-07 11:04:57 +01:00
mach-ns9xxx clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
mach-omap1 Merge branch 'omap-upstream' into for-next 2009-05-28 15:41:03 -07:00
mach-omap2 Merge branch 'omap-clock-for-next' of git://git.pwsan.com/linux-2.6 into devel 2009-06-20 10:57:40 +01:00
mach-orion5x [ARM] orion5x: register the crypto device on SOCs that support it 2009-06-15 00:37:08 -04:00
mach-pnx4008 [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-pxa Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 into devel 2009-06-18 23:09:52 +01:00
mach-realview [ARM] 5555/1: RealView: Include asm/smp_twd.h in realview-pbx.c 2009-06-19 15:10:58 +01:00
mach-rpc [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-s3c24a0/include/mach [ARM] S3C: Make IRQ_EINT sleep control common 2009-03-08 12:35:36 +00:00
mach-s3c2400 [ARM] S3C24XX: GPIO: Fix error returns from gpio functions 2009-05-18 19:40:18 +01:00
mach-s3c2410 [ARM] S3C24XX: remove duplicated #include 2009-06-16 23:30:12 +01:00
mach-s3c2412 Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-06-10 22:41:06 +01:00
mach-s3c2440 [ARM] MINI2440: Cleanup duplicated header includes 2009-06-15 22:10:36 +01:00
mach-s3c2442 [ARM] GTA02/FreeRunner: Add machine definition 2009-06-16 23:41:29 +01:00
mach-s3c2443 [ARM] S3C24XX: DMA: Split hardware regs out of <mach/dma.h> 2009-05-01 11:39:06 +01:00
mach-s3c6400 Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-06-10 22:41:06 +01:00
mach-s3c6410 [ARM] SMDK6410: Add USB high-speed/OtG gadget device 2009-05-16 22:14:09 +01:00
mach-sa1100 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-06-14 13:46:25 -07:00
mach-shark [ARM] pass reboot command line to arch_reset() 2009-03-19 16:20:24 +00:00
mach-stmp37xx [ARM] 5539/1: Freescale STMP: onboard devices declaration 2009-06-04 14:16:45 +01:00
mach-stmp378x [ARM] 5539/1: Freescale STMP: onboard devices declaration 2009-06-04 14:16:45 +01:00
mach-u300 Merge branch 'u300' into devel 2009-06-14 11:01:44 +01:00
mach-versatile Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-06-10 22:41:06 +01:00
mach-w90x900 [ARM] 5549/1: Add clock api for w90p910 platform. 2009-06-11 14:45:18 +01:00
mm Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-22 14:56:13 -07:00
nwfpe [ARM] nwfpe: fix 'floatx80_is_nan' sparse warning 2009-05-15 12:49:14 +01:00
oprofile RealView: Move the IRQ_* definitions out of the board-*.h files 2009-05-30 14:00:17 +01:00
plat-iop dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32) 2009-04-07 08:31:11 -07:00
plat-mxc Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm 2009-06-14 13:42:43 -07:00
plat-omap Merge branch 'omap-clock-for-next' of git://git.pwsan.com/linux-2.6 into devel 2009-06-20 10:57:40 +01:00
plat-orion [ARM] Orion/Kirkwood: rename orion5x_wdt to orion_wdt 2009-06-08 13:05:00 -04:00
plat-pxa [ARM] pxa: add PWM devices support for pxa168/910 2009-06-05 10:32:06 +08:00
plat-s3c Merge git://git.infradead.org/mtd-2.6 2009-06-22 16:56:22 -07:00
plat-s3c24xx Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-06-10 22:41:06 +01:00
plat-s3c64xx [ARM] S3C64XX: add to_irq() support for EINT() GPIO 2009-06-22 14:11:56 +01:00
plat-stmp3xxx [ARM] 5539/1: Freescale STMP: onboard devices declaration 2009-06-04 14:16:45 +01:00
tools [ARM] Update mach-types 2009-06-20 22:28:41 +01:00
vfp Fix the VFP handling on the Feroceon CPU 2009-05-30 14:00:18 +01:00
Kconfig [ARM] S3C64XX: Initial support for DVFS 2009-06-16 23:36:24 +01:00
Kconfig-nommu
Kconfig.debug [ARM] 5412/1: XSCALE: add ice dcc support 2009-02-27 20:57:46 +00:00
Makefile Merge branch 'u300' into devel 2009-06-14 11:01:44 +01:00