SPI bus clocks can be avoided passing through platform
data as spi driver is getting the bus clock using the
generic clock connection id registered via clkdev.
Signed-off-by: NPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Registered the SPI bus clocks with clkdev using generic
connection id.
Signed-off-by: NPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Registered the SPI bus clocks with clkdev using generic
connection id.
Signed-off-by: NPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Registered the SPI bus clocks with clkdev using generic
connection id.
Signed-off-by: NPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Registered the SPI bus clocks with clkdev using generic
connection id.
Signed-off-by: NPadmavathi Venna <padma.v@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Add support for lookup of sdhci-s3c controller clocks using generic names
for s3c2416, s3c64xx, s5pc100, s5pv210 and exynos4 SoC's.
Signed-off-by: NRajeshwari Shinde <rajeshwari.s@samsung.com>
[kgene.kim@samsung.com: fixed trailing whitespace]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The bus clocks previously sent through platform data to SDHCI controller
are removed.
Signed-off-by: NRajeshwari Shinde <rajeshwari.s@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Add initial dts file for EXYNOS4210 SoC. This dts file describes
the SoC specific devices and properties. Along with this, add dts
file for Samsung's SMDKV310 board and Insignal's ORIGEN board which
uses the EXYNOS4210 dts file and extends it to describe the board
specific properties.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Add a new EXYNOS4 compatible device tree enabled board file. Boards
based on the EXYNOS4 family of SoC's can use this as the machine/board
file. When using this machine fike, a corresponding device tree blob
which describes the board's properties should be supplied at boot time
to the kernel.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With the 'struct dma_pl330_peri' removed, the platfrom data for dma
driver can be simplified to a simple list of peripheral request ids.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: NBoojin Kim <boojin.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With the 'struct dma_pl330_peri' removed, the platfrom data for dma
driver can be simplified to a simple list of peripheral request ids.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: NBoojin Kim <boojin.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With the 'struct dma_pl330_peri' removed, the platfrom data for dma
driver can be simplified to a simple list of peripheral request ids.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Boojin Kim <boojin.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

PDMA controllers when instantiated from device tree are registered using
amba_device_register(). The registration process enables clock to the
controllers to read the peripheral id of the PDMA amba device.

In case of Exynos4, the clocks to the PDMA controllers are named as 'dma'
but amba_device_register() looks up the clock using the name 'apb_pclk'.
Hence, alias clocks with name 'apb_pclk' clock are created for clocks
with name 'dma'.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The pl330 device instances and associated platform data is required only
for non-device-tree builds. With device tree enabled, the data about the
platform is obtained from the device tree. For images that include both
dt and non-dt platforms, an addditional check is added to ensure that
static amba device registrations is applicable to only non-dt platforms.

Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

A new dma request id 'DMACH_DT_PROP' is introduced for client drivers
requesting a dma channel. This request indicates that a device tree
node property represting the dma channel is available in
'struct samsung_dma_info'. The dma channel request wrapper uses the
node property value as the value for the filter parameter.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With the 'struct dma_pl330_peri' removed, the platfrom data for dma
driver can be simplified to a simple list of peripheral request ids.

Cc: Jassi Brar <jassisinghbrar@gmail.com>
Acked-by: NBoojin Kim <boojin.kim@samsung.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The dma channel selection filter function is moved from plat-samsung
into the pl330 driver. In additon to that, a check is added in the
filter function to ensure that the channel on which the filter has
been invoked is pl330 channel instance (and avoid any incorrect
access of chan->private in a system with multiple types of DMA
drivers).
Suggested-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Acked-by: NJassi Brar <jassisinghbrar@gmail.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Acked-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With reset port, set clock and get clock functions in SoC specific extentions
being removed, only the driver probe is left over in these extensions. The
probe function itself can be merged into one and moved into the samsung common
serial driver. With driver probe also moved, all the SoC specific extentions
are no longer required and they are deleted.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Samsung uart driver lookups the clock using the connection id 'clk_uart_baud'.
The uart clocks for all Samsung platforms are reorganized to register them
with the lookup name as required by the uart driver.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With clkdev based clock lookup support, the clock set and get operation
using clock names communicated between the samsung uart driver and the
SoC specific extension can be removed.

In addition to that, for each platform specific extension, add the
default clock selection, number of clock options for uart baud generator,
clock selection bit mask and shift values which is required by the
clkdev support in samsung uart driver.

The default clock selection value 'def_clk_sel' specifies the default clock
to be used as the source clock for baud rate generator in case the platform
code does not specify the same.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

With clkdev based clock lookup added to samsung serial driver, the use
of 'struct s3c24xx_uart_clksrc' to supply clock names in platform
data is removed from all the Samsung platform code.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Ramax Lo <ramaxlo@gmail.com>
Cc: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Instead of using clock names supplied in platform data, use a generic
clock name 'clk_uart_baud' to look up clocks. The platform code should
register clocks with the name 'clk_uart_baud' which can be used by the
baud rate generator. The clock lookup and selection of the best clock
as baud rate clock is reworked.

Platform code can specify the clocks that can be used as source for the
baud clock (as supported previously by passing names of clocks). A new
member is added to the platform data 'clk_sel' which holds a bit-field
value with each bit representing a baud source clock. If a bit at any
bit position is set, that clock is looked up to participate in the
selection of the baud clock source.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

s3c2440 uses fclk/n (fclk divided by n) clock as one of the possible clocks used
to generate the baud rate clock. The divider 'n' in this case can be logically
represented outside of the uart controller.

This patch creates a new clock by name "fclk_n" for s3c2440 based platforms to
represent the fclk/n clock in the platform code. This clock provides a get_rate
callback that checks the UCON0/1/2 registers to determine the clock rate. The
samsung uart driver would receive the "fclk_n" clock name as one of the possible
baud rate clock options and the driver need not determine clock rate of fclk/n.

Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Enable conversion of device tree interrupt specifier to linux
virq domain for GIC controller.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The timer irqs statically mapped from linux irq numbers 11 to 15 are
moved to the end of the statically mapped linux irq space. The GIC PPI
and SPI interrupts are relocated to start from 16 and 32 of the linux
irq space. This is a required to add device tree support for GIC and
Interrupt combiner for EXYNOS4.

A new macro 'IRQ_TIMER_BASE' specifies a platform specific base of the
linux virq number for the timer interrupts. For exynos4, this base is
set to end of the linux virq space.  For the other S5P platforms, the
existing base '11' is retained.
Signed-off-by: NThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The bisection implemented in unwind_find_origin() stopped to early.  If
there is only a single entry left to check the original code just took
the end point as origin which might be wrong.

This was introduced in commit de66a979 ("ARM: 7187/1: fix unwinding
for XIP kernels").
Reported-and-tested-by: NNick Bowler <nbowler@elliptictech.com>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Commit 10299e2e (ARM: RX-51:
Enable isp1704 power on/off) added power management for isp1704.

However, the transceiver should be powered on by default,
otherwise USB doesn't work at all for networking during
boot.

All kernels after v3.0 are affected.

Cc: stable@kernel.org
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com>
Reviewed-by: NSebastian Reichel <sre@debian.org>
[tony@atomide.com: updated comments]
Signed-off-by: NTony Lindgren <tony@atomide.com>

Commits 09d28d ("ARM: OMAP: mcbsp: Start generalize omap2_mcbsp_set_clks_src")
and 7bc0c4 ("ARM: OMAP: mcbsp: Start generalize signal muxing functions")
incorrectly set two struct omap_mcbsp_platform_data fields after
omap_device_build_ss and kfree calls.

Fix this by moving these pdata assignments before those calls.
Signed-off-by: NJarkko Nikula <jarkko.nikula@bitmer.com>
Reported-by: NNeilBrown <neilb@suse.de>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arm_dma_zone_size is used by arm_bootmem_free() which is called by
paging_init(). Thus it needs to be set before calling it.
Signed-off-by: NArnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: NNicolas Pitre <nico@linaro.org>
Cc: stable@kernel.org
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Since commit 6571534b (plat-mxc: iomux-v3.h: implicitly enable
pull-up/down when that's desired) was in, the power button on imx51
babbage board stopped working because it's pulled up by mistake.
The patch removes the pull-up setting from the pad configuration for
that gpio to make the power button back to work.
Signed-off-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

  CC      arch/arm/plat-mxc/cpufreq.o
arch/arm/plat-mxc/cpufreq.c:203: error: expected declaration specifiers or '...' before string constant
arch/arm/plat-mxc/cpufreq.c:203: warning: data definition has no type or storage class
arch/arm/plat-mxc/cpufreq.c:203: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR'
arch/arm/plat-mxc/cpufreq.c:203: warning: function declaration isn't a prototype
arch/arm/plat-mxc/cpufreq.c:204: error: expected declaration specifiers or '...' before string constant
arch/arm/plat-mxc/cpufreq.c:204: warning: data definition has no type or storage class
arch/arm/plat-mxc/cpufreq.c:204: warning: type defaults to 'int' in declaration of 'MODULE_DESCRIPTION'
arch/arm/plat-mxc/cpufreq.c:204: warning: function declaration isn't a prototype
arch/arm/plat-mxc/cpufreq.c:205: error: expected declaration specifiers or '...' before string constant
arch/arm/plat-mxc/cpufreq.c:205: warning: data definition has no type or storage class
arch/arm/plat-mxc/cpufreq.c:205: warning: type defaults to 'int' in declaration of 'MODULE_LICENSE'
arch/arm/plat-mxc/cpufreq.c:205: warning: function declaration isn't a prototype
make[1]: *** [arch/arm/plat-mxc/cpufreq.o] Error 1
make: *** [arch/arm/plat-mxc] Error 2
Signed-off-by: NRichard Zhao <richard.zhao@freescale.com>
Signed-off-by: NRichard Zhao <richard.zhao@linaro.org>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NDong Aisheng <b29396@freescale.com>
Acked-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: NJason Chen <jason.chen@linaro.org>
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Cc: stable@kernel.org

arm-eabi-4.4.3-ld:--defsym zreladdr=: syntax error
make[2]: *** [arch/arm/boot/compressed/vmlinux] Error 1
make[1]: *** [arch/arm/boot/compressed/vmlinux] Error 2
make: *** [uImage] Error 2
Signed-off-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: NJett.Zhou <jtzhou@marvell.com>

arch/arm/mach-exynos/mct.c: In function 'exynos4_timer_resources':
arch/arm/mach-exynos/mct.c:450: error: 'exynos4_mct_tick_isr' undeclared (first use in this function)
arch/arm/mach-exynos/mct.c:450: error: (Each undeclared identifier is reported only once
arch/arm/mach-exynos/mct.c:450: error: for each function it appears in.)
make[1]: *** [arch/arm/mach-exynos/mct.o] Error 1
Reported-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NChanghwan Youn <chaos.youn@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>

This patch adds remove_irq in place of disable_irq which
is correct equivalent function for setup_irq used in
exynos4_mct_tick_init.
Signed-off-by: NAmit Daniel Kachhap <amit.kachhap@linaro.org>
Tested-by: NInderpal Singh <inderpal.singh@linaro.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The SMDK board uses LT3591 as backlight LED driver of LTE480WV LCD.
According to the LT3591 datasheet, the switching frequency should
be 1MHz. So, PWM period is calculated by following formula:

PWM period = 1/switching frequency
	   = 1/1MHz
	   = 1000ns

Thus, the PWM backlight period should be 1000ns.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch removes duplicated slab header for pwm backlight.
arch/arm/plat-samsung/dev-backlight.c: slab.h is included
more than once.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

In the unlikely case that a platform registers a PMU platform_device
when running on a CPU that is unsupported by perf, we will encounter a
NULL dereference when trying to assign the platform_device to the
cpu_pmu structure.

This patch checks that the CPU is supported by perf before assigning
the platform_device.
Reported-by: NPawel Moll <pawel.moll@arm.com>
Signed-off-by: NWill Deacon <will.deacon@arm.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The linker places the unwind tables in readonly sections. So when using
an XIP kernel these are located in ROM and cannot be modified.
For that reason the current approach to convert the relative offsets in
the unwind index to absolute addresses early in the boot process doesn't
work with XIP.

The offsets in the unwind index section are signed 31 bit numbers and
the structs are sorted by this offset. So it first has offsets between
0x40000000 and 0x7fffffff (i.e. the negative offsets) and then offsets
between 0x00000000 and 0x3fffffff. When seperating these two blocks the
numbers are sorted even when interpreting the offsets as unsigned longs.

So determine the first non-negative entry once and track that using the
new origin pointer. The actual bisection can then use a plain unsigned
long comparison. The only thing that makes the new bisection more
complicated is that the offsets are relative to their position in the
index section, so the key to search needs to be adapted accordingly in
each step.

Moreover several consts are added to catch future writes and rename the
member "addr" of struct unwind_idx to "addr_offset" to better match the
new semantic. (This has the additional benefit of breaking eventual
users at compile time to make them aware of the change.)

In my tests the new algorithm was a tad faster than the original and has
the additional upside of not needing the initial conversion and so saves
some boot time and it's possible to unwind even earlier.
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Acked-by: NNicolas Pitre <nico@fluxnic.net>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>