Commit Graph

85 Commits

Author SHA1 Message Date
Russell King
4073723acb Merge branch 'misc' into devel
Conflicts:
	arch/arm/Kconfig
	arch/arm/common/Makefile
	arch/arm/kernel/Makefile
	arch/arm/kernel/smp.c
2011-01-06 22:32:52 +00:00
Russell King
58daf18cdc Merge branch 'clksrc' into devel
Conflicts:
	arch/arm/mach-vexpress/v2m.c
	arch/arm/plat-omap/counter_32k.c
	arch/arm/plat-versatile/Makefile
2011-01-05 18:09:03 +00:00
Russell King
71c8745299 ARM: s5pv310: update clock source registration
In d7e81c2 (clocksource: Add clocksource_register_hz/khz interface) new
interfaces were added which simplify (and optimize) the selection of the
divisor shift/mult constants.  Switch over to using this new interface.

Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-22 22:44:36 +00:00
Russell King
e3d9c625f5 ARM: CPU hotplug: fix hard-coded control register constants
Use the definition we've provided in asm/system.h rather than
numeric constants.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:16 +00:00
Russell King
d4450261e5 ARM: CPU hotplug: fix reporting of spurious wakeups
The original scheme for reporting spurious wakeups was broken - it
tried to use printk() from a context which wasn't coherent with the
other CPUs, which risks corrupting the printk() data.

Fix this by noting the number spurious wakeups, and only report them
when we are properly woken - when we will be coherent with the rest
of the system.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:14 +00:00
Russell King
3705ff6da5 ARM: Fix subtle race in CPU pen_release hotplug code
There is a subtle race in the CPU hotplug code, where a CPU which has
been offlined can online itself before being requested, which results
in things going astray on the next online/offline cycle.

What happens in the normal online/offline/online cycle is:

	CPU0			CPU3
	requests boot of CPU3
	pen_release = 3
	flush cache line
				checks pen_release, reads 3
				starts boot
				pen_release = -1
	... requests CPU3 offline ...
				... dies ...
				checks pen_release, reads -1
	requests boot of CPU3
	pen_release = 3
	flush cache line
				checks pen_release, reads 3
				starts boot
				pen_release = -1

However, as the write of -1 of pen_release is not fully flushed back to
memory, and the checking of pen_release is done with caches disabled,
this allows CPU3 the opportunity to read the old value of pen_release:

	CPU0			CPU3
	requests boot of CPU3
	pen_release = 3
	flush cache line
				checks pen_release, reads 3
				starts boot
				pen_release = -1
	... requests CPU3 offline ...
				... dies ...
				checks pen_release, reads 3
				starts boot
				pen_release = -1
	requests boot of CPU3
	pen_release = 3
	flush cache line

Fix this by grouping the write of pen_release along with its cache line
flushing code to ensure that any update to pen_release is always pushed
out to physical memory.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:13 +00:00
Russell King
86e62b9336 ARM: SMP: remove smp_mpidr.h
With "ARM: CPU hotplug: remove bug checks in platform_cpu_die()", we
now do not use hard_smp_processor_id(), we no longer need to read the
hardware processor ID.  Remove the include providing this function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:11 +00:00
Russell King
bbc81fd432 ARM: CPU hotplug: remove bug checks in platform_cpu_die()
platform_cpu_die() is entered from the CPU's own idle thread, which
can not be migrated to other CPUs.  Moreover, the 'cpu' argument
comes from the thread info, which will always be the 'current'
CPU.  So remove this useless bug check.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:10 +00:00
Russell King
3c030beabf ARM: CPU hotplug: move cpu_killed completion to core code
We always need to wait for the dying CPU to reach a safe state before
taking it down, irrespective of the requirements of the platform.
Move the completion code into the ARM SMP hotplug code rather than
having each platform re-implement this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:10 +00:00
Russell King
2c0136dba4 ARM: SMP: consolidate trace_hardirqs_off() into common SMP code
All platforms call trace_hardirqs_off() in their secondary startup code,
so move this into the core SMP code - it doesn't need to be in the
per-platform code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:09 +00:00
Russell King
05c74a6cbc ARM: SMP: consolidate the common parts of smp_prepare_cpus()
There is a certain amount of smp_prepare_cpus() which doesn't belong
in the platform support code - that is, code which is invariant to the
SMP implementation.  Move this code into arch/arm/kernel/smp.c, and
add a platform_ prefix to the original function.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:09:08 +00:00
Russell King
8975b6c0fd ARM: SMP: Clean up ncores sanity checks
scu_get_core_count() never returns zero cores, so we don't need to
check and correct if ncores is zero.

Tegra was missing the check against NR_CPUS, leading to a potential
bitfield overflow if this becomes the case.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-20 15:08:27 +00:00
Russell King
ff2e27ae0b ARM: GIC: consolidate gic_cpu_base_addr to common GIC code
Every architecture using the GIC has a gic_cpu_base_addr pointer for
GIC 0 for their entry assembly code to use to decode the cause of the
current interrupt.  Move this into the common GIC code.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:42 +00:00
Russell King
384895330e ARM: GIC: Remove MMIO address from gic_cpu_init, rename to gic_secondary_init
We don't need to re-pass the base address for the CPU interfaces to the
GIC for secondary CPUs, as it will never be different from the boot CPU
- and even if it was, we'd overwrite the boot CPU's base address.

Get rid of this argument, and rename to gic_secondary_init().

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:40 +00:00
Russell King
b580b899dd ARM: GIC: provide a single initialization function for boot CPU
Provide gic_init() which initializes the GIC distributor and current
CPU's GIC interface for the boot (or single) CPU.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-14 19:21:30 +00:00
Russell King
ad3b6993b9 ARM: SMP: pass an ipi number to smp_cross_call()
This allows us to use smp_cross_call() to trigger a number of different
software generated interrupts, rather than combining them all on one
SGI.  Recover the SGI number via do_IPI.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-12-03 08:26:30 +00:00
Russell King
f9cef50681 Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Conflicts:
	arch/arm/mach-s3c64xx/dev-audio.c
2010-10-28 12:27:34 +01:00
Daein Moon
cbff3eb3e6 ARM: S5PV310: Support ethernet for SMDKV310 and SMDKC210
This patch adds to support ethernet for SMDKV310 and SMDKC210 board.
  - define smc911x resources
  - define configurations of smc911x platform data
  - define platform device "smsc911x"
  - initialize srom controller for lan9215 chip

Signed-off-by: Daein Moon <moon9124@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-26 12:51:17 +09:00
Daein Moon
09596ba07e ARM: S5PV310: Add support SROMC
This patch adds support SROMC for S5PV310 and S5PC210.

Signed-off-by: Daein Moon <moon9124@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-26 08:40:12 +09:00
Kukjin Kim
d07dc60c6c ARM: S5P: Change VMALLOC_END to use more vmalloc()/ioremap() area
This patch changes VMALLOC_END from 0xE0000000 to 0xF6000000, because
some systems want to use more vmalloc()/ioremap() area and now don't use
from at 0xE0000000 to 0xF6000000 (the start of Samsung SoCs' VA space)

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:11:50 +09:00
Jongsun Han
d8bb31e68f ARM: S5PV310: Add support External Interrupt
This patch adds EINT(External Interrupt) support on S5PV310 and S5PC210.
All EINTs are transferred to GIC through interrupt combiner.

Signed-off-by: Jongsun Han <jongsun.han@samsung.com>
Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:11:28 +09:00
Jongsun Han
40c9bc5c3c ARM: S5PV310: Add the definition for external interrupt
This patch adds the definition for both IRQs and GPIO registers for
external interrupts.

Signed-off-by: Jongsun Han <jongsun.han@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:11:21 +09:00
Kyungmin Park
1cf0eb7997 ARM: S5PV310: Add L2 cache init function in cpu.c
This patch adds L2 cache initialization code in cpu.c of ARCH_S5PV310.
It includes TAG and Data latency, Prefetch, and Power configurations.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:11:16 +09:00
Kyungmin Park
57c1f87136 ARM: S5PV310: Remove L2 cache init in machine
Basically, need L2 cache initialize function in ARCH_S5PV310. So it would
be better to move it into ARCH_S5PV310 common part. This patch removes L2
cache initialization code at the each board file.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:11:07 +09:00
Jongpill Lee
d2e7eca36d ARM: S5PV310: Add support GPIOlib
This patch adds GPIOlib support for S5PV310 and S5PC210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
[kgene.kim@samsung.com: Fix NR_IRQS]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:06:33 +09:00
Jongpill Lee
37ea63b14b ARM: S5P: Add initial map for GPIO2 and GPIO3
This patch adds initial map for GPIO2 and GPIO3.
S5PV310/S5PC210 has separated GPIO1, GPIO2 and GPIO3.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:06:22 +09:00
Jongpill Lee
3e7d5e5a4a ARM: S5PV310: Update MAX_COMBINER_NR
This patch updates MAX_COMBINER_NR from 39 to 40 because
S5PV310 need 39th combiner for including EINT16_31.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Sangbeom Kim <sbkim73@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:06:18 +09:00
Seungwhan Youn
d4b34c6c84 ARM: S5P: Reduce duplicated EPLL control codes
S5P Samsung SoCs has a EPLL to support various PLL clock sources for other
H/W blocks. Until now, to control EPLL, each of SoCs make their own functions
in 'mach-s5pxxx/clock.c'. But some of functions, 'xxx_epll_get_rate()' and
'xxx_epll_enable()', are exactly same in all S5P SoCs, so this patch move
these duplicated codes to common EPLL functions that use platform wide.

Signed-off-by: Seungwhan Youn <sw.youn@samsung.com>
Acked-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:05:56 +09:00
Kyungmin Park
b7a9825553 ARM: S5PV310: Add I2C channel 3, 4, 5, 6, and 7 device support
S5PV310 and S5PC210 support more I2C devices than previous SoCs.
Add the device support code for them.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:03:43 +09:00
Kyungmin Park
8a3710dfbf ARM: S5PV310: Define address & interrupt for all I2C blocks
S5PV310 and S5PC210 support total 8 (+ 1 dedicated for HDMI) I2C devices.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:03:38 +09:00
Kyungmin Park
3b7998f529 ARM: S5PV310: I2C0/1 devices support on Universal board
Camera devices use the I2C0 and Gyro uese the I2C1 on universal board.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: minor title fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:03:01 +09:00
Kyungmin Park
acf5eda92d ARM: S5PV310: Universal OneNAND support
OneNAND device support for Universal board.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: minor title fixes]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:02:52 +09:00
Jeongbae Seo
28c80aa707 ARM: SAMSUNG: Add clock types into platform data
This patch adds clock types into platform data to support
external clock divider instead of internal clock divider.
It is defined that what kinds of clock type is used in machine.

Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:02:47 +09:00
Hyuk Lee
2b11148a80 ARM: S5PV310: Add support HSMMC on SMDKV310 and SMDKC210
This patch adds support HSMMC for S5PV310(SMDKV310) and
S5PC210(SMDKC210).

Signed-off-by: Hyuk Lee <hyuk1.lee@samsung.com>
Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:02:36 +09:00
Hyuk Lee
1036c3ab60 ARM: S5PV310: Add HSMMC platform data
This patch adds initialization HSMMC device information.
And HSMMC platform data like card detect, data bus width
and capability is configured.

Signed-off-by: Hyuk Lee <hyuk1.lee@samsung.com>
Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:02:26 +09:00
Hyuk Lee
193151142b ARM: S5PV310: Add support HSMMC and SDHCI configuration
This patch adds support HSMMC for S5PV310 and S5PC210 and
setup for HSMMC host controller and also related GPIO.
At most 4 channel can be used at the same time.
A user can configure SDHCI data bus as 8bit or 4bit.

Signed-off-by: Hyuk Lee <hyuk1.lee@samsung.com>
Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-25 16:02:20 +09:00
Kukjin Kim
4d9374f39e Merge branch 'next-gpio-update' into for-next 2010-10-25 15:57:16 +09:00
Kukjin Kim
861004657e ARM: S5PV310: Change to using s3c_gpio_cfgall_range()
Change the code setting a range of GPIO pins' configuration and
pull state to use the recently introduced s3c_gpio_cfgall_range().

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-23 11:50:42 +09:00
Kukjin Kim
ce5d3ac1f5 ARM: S5PV310: Change to using s3c_gpio_cfgpin_range()
This patch changes the code setting ranges of GPIO pins in mach-s5pv310 using
s3c_gpio_cfgpin() to use the recently introduced s3c_gpio_cfgpin_range().

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-23 11:49:50 +09:00
Kyungmin Park
398151e6fe ARM: S5P: Remove redundant selection PLAT_S5P for S5PC100, S5PV210 and S5PV310
The selection PLAT_S5P is selected with plat-s5p/Kconfig.
So remove it form each CPU_S5PXXXX config.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: edited title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:54:55 +09:00
Kyungmin Park
f567fa6f62 ARM: S5PV310: Place the common SPARSEMEM at ARCH_S5PV310
In case of S5PV310/S5PC210, it uses the SPARSEMEM as default memory
configuration. So moved to ARCH_S5PV310 config.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: edited title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:54:55 +09:00
Boojin Kim
1114275674 ARM: S5PV310: Fix physical address of System Controller Register
The physical address of SYSCON(System Controller) is wrong.
This patch fixs this wrong physical address value from 0x10020000 to 0x10010000.

Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:18 +09:00
Changhwan Youn
0c0f909689 ARM: S5PV310: Optimize interrupt source searching code
It is reported by Junseok Jung that using clz instruction is
better instead of using for-loop to find the interrupt source.
This patch modifies interrupt source searching code using __ffs().
The __ffs() is implemented using clz instruction.

Suggested-by: Junseok Jung <jundols.jung@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:18 +09:00
Jemings Ko
8d75c9128a ARM: S5PV310: Add support Watchdog Timer
This patch adds support Watchdog Timer for S5PV310 and S5PC210.

Signed-off-by: Jemings Ko <jemings@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:18 +09:00
Changhwan Youn
cdff6e6fd2 ARM: S5PV310: Add support RTC
This patch adds support RTC for S5PV310 and S5PC210.

Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Jemings Ko <jemings@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:17 +09:00
Jaecheol Lee
8f3b9cff23 ARM: S5PV310: Fix clkset_moutcore_list
This patch fixes source clocks of moutcore.
That should be clk_mout_apll instead of clk_sclk_apll.

Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:17 +09:00
Kukjin Kim
eda9c023b1 ARM: SAMSUNG: Change the 3rd HSMMC interrupt name for compatibility
This patch changes the 3rd HSMMC interrupt name for compatibility
from IRQ_MMC to IRQ_HSMMC3.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:17 +09:00
Jongpill Lee
33f469d2d9 ARM: S5PV310: Adds various special clocks
This patch adds various special clocks for S5PV310/S5PC210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:17 +09:00
Jongpill Lee
06cba8d5b6 ARM: S5PV310: Add video clocks
This patch adds video clocks for S5PV310/S5PC210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:17 +09:00
Jongpill Lee
82260bf38f ARM: S5PV310: Add various clocks
This patch adds various clocks for S5PV310/S5PC210.

Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2010-10-21 07:52:16 +09:00