Add doubled HCLK to S3C64xx.
Signed-off-by: NWerner Almesberger <werner@openmoko.org>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add support for S3C6400 SDHCI channels 0 and 1, making
the GPIO code common to both S3C6400 and S3C6410.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move the GPIO suspend/resume support inline with the gpiolib support
so that it will work with both the S3C24XX and S3C64XX series.

The s3c_gpio_chip is extended to have a pm callback and a save block
to keep the state of the GPIO over suspend, and the code from the
s3c24xx implementation is added to a new common file.

The suspend process now uses the list of registered chips to go through
saving and restoring each one as appropriate, using the pm callback to
select the appropriate routine depending on the type of control register
present.

This change also means that any additional GPIO added should not require
changes to the PM.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add support for saving the state of the IRQ registers over suspend.

This requires moving the S3C64XX UART registers into <plat/regs-serial.h>
and adding irq-pm.c which saves the state of all the IRQ registers.

The irq-pm.c saves all the IRQ registers, including the IRQ_EINT and
IRQ_EINT_GROUP registers as it was easier than adding three different
files. Also ensuring that all the registers are restored to the same
state as before suspend is considered to be the best thing to do.

Note, we do not suspend the VIC here, this is done by the VIC driver
itself.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add an s3c64xx_sysclass and device for items that currently
want to bind to any s3c64xx processor. The first user of this
will be parts of the s3c64xx suspend support which need to
save device state over suspend/resume.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add definition for s3c6410_sysclass which was missing
from arch/arm/plat-s3c/include/plat/cpu.h.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial support for the S3C64XX based systems to use
suspend-to-RAM to sleep.

Includes basic debugging for use with the SMDK6410 usign the
LEDs on the baseboard.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the facility to save the UART UDIVSLOT register if the UART
state is being saved over suspend.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add a simple debug message on saving the UART state and add a per-arch
pre-restore function to be used by the s3c64xx restore code to ensure
the UARTs control registers do not go through any illegal state changes.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The USB host base address is available on both the S3C24XX and S3C64XX
ranges.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add common definition for USB OHCI platform device, add a Kconfig
to selectively compile it and add update all the users.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Fix the following sparse warning due to s3c_device_hwmon being
missing from <plat/devs.h>

devs.c:380:24: warning: symbol 's3c_device_hwmon' was not declared. Should it be static?
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add an export of the two GPIO configuration calls
s3c_gpio_cfgpin and s3c_gpio_setpull to allow modules
to use them (such as ASoC drivers)
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The platform data for the i2c-s3c2410 driver used to allow a min,
max and desired frequency for the I2C bus. This patch reduces it
to simply a desired frequency ceiling and corrects all the uses
of the platform data appropriately.

This means, for example, that on a system with a 66MHz fclk, a
request for 100KHz will achieve 65KHz which is safe and
acceptable, rather than 378KHz which it would have achieved
without this change.
Signed-off-by: NSimtec Linux Team <linux@simtec.co.uk>
Signed-off-by: NDaniel Silverstone <dsilvers@simtec.co.uk>
[ben-linux@fluff.org: tidy subject and description]
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The sda_delay field should be specified in ns, not in clock ticks
as when using cpufreq we could be changing the bus rate.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>

The usb-control.h is needed by ohci-s3c2410.c for both S3C24XX and S3C64XX
architectures, so move it to <plat/usb-control.h>
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

As noted by Russell King, the sleep code path is not
elegant and makes use of leaving items on the stack
between calls.

Change the code that does the following:

        if (s3c_cpu_save(regs_save) == 0) {
                flush_cache_all();
                S3C_PMDBG("preparing to sleep\n");
                pm_cpu_sleep();
        }

to simply call s3c_cpu_save, and let that do the
necessary calls to quiesce and sleep the system.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

The definitions of S3C2412_IISMOD_SDF_MSB and S3C2412_IISMOD_SDF_LSB
are incorrect, being the same S3C2412_IISMOD_SDF_IIS which is the
only correct one in this series.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The PM CRC checking code kmallocs an area to save a set of
CRC values during suspend. This triggers a warning due to the
call of a function that might sleep whilst the system is not
in a valid state to do so.

Move the allocation and free to points in the suspend and resume
process where they can call a function that might-sleep.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

When doing the CRC check of the memory, avoid checking
the page that our stack is residing in as this changes
during the execution of the suspend and resume.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Change the way the UART state is saved over suspend to allow the s3c64xx
code to modify the settings on resume to avoid any illegal state changes
to the UART clocks. This will also allow us to save the UDIVSLOT register
on newer SoCs.

Move to using a structure for the UART use the extant Kconfig configuration
specifying the number of UARTs.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Rename s3c2410_cpu_resume to s3c_cpu_resume and s3c2410_cpu_save to
s3c_cpu_save to remove the CPU specific naming of these functions
which are now in the generic PM code.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Since we have moved a large proportion of the PM code to the common
support area, remove the cpu specific name from the initialisation
function.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move the IRQ_EINT sleep control to be available to all
s3c impelmentations. Since s3c_irqext_wake is not large,
place it in arch/arm/plat-s3c/pm.c as adding it to a new
file would be a waste of compile time.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Fix warnings from struct resource being bigger than unsigned long by
forcing the type. We are only a 32bit platform so no physical memory
addresses will be too big to fit in this.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move parts of the core and debug suspend code into the
plat-s3c for use with the new s3c64xx code.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Split the optional memory check code out of the pm.c file
as it is quite a big #ifdef block and as-such can be moved
out and simply compiled when the configuration is set.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Start moving the PM code by moving all the common support functions
to a common location in arch/arm/plat-s3c. With the move we rename
the functions from s3cxxx_ to s3c_ to fit the new location.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move the <plat/pm.h> header to plat-s3c as preparation
for moving parts of the s3c24xx pm support which are
common into the plat-s3c support.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial code to support the S3C64XX I2S hardware using the
s3c-i2s-v2 core code.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The <mach/audio.h> file needs to be common to both ARCH_S3C2410 and
ARCH_S3C64XX as they share common driver code, so move it to <plat/audio.h>.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Move the IIS headers to their correct place.
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

Ensure __iomem attribute is __force 'd off in the minimal
__raw_writel() implementation.
Signed-off-by: NSimtec Linux Team <linux@simtec.co.uk>
Signed-off-by: NBen Dooks <ben@simtec.co.uk>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-at91/at91cap9.c:337: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91rm9200.c:301: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9260.c:351: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9261.c:287: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9263.c:312: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-at91/at91sam9rl.c:304: error: 'NR_AIC_IRQS' undeclared here (not in a function)
arch/arm/mach-h720x/h7202-eval.c:38: error: implicit declaration of function 'IRQ_CHAINED_GPIOB'
arch/arm/mach-ks8695/devices.c:46: error: 'KS8695_IRQ_WAN_RX_STATUS' undeclared here (not in a function)
arch/arm/mach-msm/devices.c:28: error: 'INT_UART1' undeclared here (not in a function)
arch/arm/mach-mx2/devices.c:233: error: 'MXC_GPIO_IRQ_START' undeclared here (not in a function)
arch/arm/mach-mx3/devices.c:128: error: 'MXC_GPIO_IRQ_START' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:140: error: 'INT_730_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:165: error: 'INT_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap1/mcbsp.c:200: error: 'INT_McBSP1RX' undeclared here (not in a function)
arch/arm/mach-omap2/board-apollon.c:286: error: implicit declaration of function 'omap_set_gpio_direction'
arch/arm/mach-omap2/mcbsp.c:154: error: 'INT_24XX_MCBSP1_IRQ_RX' undeclared here (not in a function)
arch/arm/mach-omap2/mcbsp.c:181: error: 'INT_24XX_MCBSP1_IRQ_RX' undeclared here (not in a function)
arch/arm/mach-pxa/e350.c:36: error: 'IRQ_BOARD_START' undeclared here (not in a function)
arch/arm/plat-s3c/dev-i2c0.c:32: error: 'IRQ_IIC' undeclared here (not in a function)
...
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

This avoids non-Samsung builds being asked about Samsung specific
configuration options.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

as per 0560cf5aSigned-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

As per Russell King's last review comment, find and remove
all unnecessary includes of <linux/delay.h> in the files
that do not need them.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the fourth UART definition for the S3C2443, and at the
same time fixup the problems caused by the enlarging of the
UART array in the previous commits.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Fix the usage of CONFIG_SERIAL_SAMSUNG_UARTS in several places
in the kernel where it had been missed. This finishes fixing a
long standing issue where S3C2443 and S3C64XX could not use the
4th UART
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

A common core driver for the S3C24XX ADC block so that
the touchscreen, hwmon and any other drivers can share
the resource.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>