Commit Graph

105 Commits

Author SHA1 Message Date
Jassi Brar 336b1a3181 ARM: S3C64XX: DMA: Free node for non-circular queues
We need to free the buff and lli nodes if the buffer queue is
not CIRCULAR.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-11-09 23:51:19 +00:00
Jassi Brar 9b08284bf2 ARM: S3C64XX: DMA: Callback with correct buffer pointer
buffdone callback should be called per buffer request with pointer
to the latest serviced request.
'next' should point to the one next to currently active.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-11-09 23:51:03 +00:00
Jassi Brar 7507f39c57 ARM: S3C64XX: DMA: Make src and dst transfer size same
Some devices don't seem to work if the source and desitnation transfer
widths are not same. For example, SPI dma xfers, with 8bits/word,
don't work without this patch.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-11-09 23:50:42 +00:00
Jassi Brar 6d0b8627d5 ARM: S3C64XX: DMA: Unify callback functions for success/failure
Replace s3c64xx_dma_tcirq and s3c64xx_dma_errirq with the common
s3c64xx_dma_buffdone.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-11-09 23:50:39 +00:00
Jassi Brar 210012a6cd ARM: S3C64XX: DMA: Protect buffer pointers while manipulation
Ensure the DMA buffer points are not updated from
another source during the process of enquing a buffer.

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
[ben-linux@fluff.org: Updated patch comment]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-11-09 23:50:39 +00:00
Mark Brown e179ac0f4e ARM: S3C64XX: Set rate of crystal mux
The current code assumes that the external clock mux will be set to
the crystal. Set this up explicitly within the clock API.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-10-26 16:49:46 +00:00
Kukjin Kim e73486b8c9 ARM: S3C64XX: Fix S3C64XX_CLKDIV0_ARM_MASK value
Fix the values of S3C6400_CLKDIV0_ARM_MASK and S3C6410_CLKDIV0_ARM_MASK.

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-10-26 16:49:46 +00:00
Russell King 07198871da Merge branch 'next-s3c-fixes' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-09-18 20:55:56 +01:00
Ben Dooks 01875d56ae Merge branch 'next-s3c64xx-fixes' into next-s3c-fixes 2009-09-17 10:12:48 +01:00
Mark Brown ebdb5ab81c ARM: S3C64XX: Provide for board-specific IRQs
Set up some IRQ space to allocation to off-SoC interrupt controllers.
Default this to 16 IRQs. If individual boards require more than this
then they will need to modify this file so allocating a small number
helps reduce the number of modifications required.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-17 10:10:46 +01:00
Jassi b93011e72c ARM: S3C64XX: DMA: Debugged alloc's with GFP_KERNEL flag in Intr context.
s3c2410_dma_enqueue makes call to kzalloc and dma_pool_alloc with GFP_KERNEL
flag set, this can be an issue for drivers, like I2S, which call
s3c2410_dma_enqueue from dma-bufferdone callback.

Change the flag GFP_KERNEL to GFP_ATOMIC to avoid any problems.

Signed-Off-by: Jassi <jassi.brar@samsung.com>
[ben-linux@fluff.org: Minor description edit and re-wrap]

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:06 +01:00
Jassi 3ea61e4922 ARM: S3C64XX: DMA: 'size' argument of dma_pool_create
Provide actual minimum(struct pl080s_lli) size of block to
dma_pool_create call, instead of hardcoded 32 bytes.

Signed-Off-by: Jassi <jassi.brar@samsung.com>

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:06 +01:00
Jassi 23c94b47be ARM: S3C64XX: DMA: struct s3c64xx_dma_buff lli fix.
Correct the lli structure in struct s3c64xx_dma_buff which should
have been 'struct pl080s_lli' (samsung specific) instead of the generic
version 'struct pl080_lli'

Signed-Off-by: Jassi <jassi.brar@samsung.com>
[ben-linux@fluff.org: Edited description and subject fields]

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:06 +01:00
Thomas Abraham 5e49bc4d9e ARM: S3C64XX: Fix divider value calculation in s3c64xx_roundrate_clksrc
In s3c64xx_roundrate_clksrc function, the calculation is wrong. This
patch fixes this calculation.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:05 +01:00
Thomas Abraham 6d025ac2fc ARM: S3C6410: update clk->parent when setting clock source
This ensures the clock hierarchy data structures are updated when we
change the clock source in the actual hardware registers.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
[ben-linux@fluff.org: Minor re-indentation of subject]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:05 +01:00
Thomas Abraham 9adb15b80b ARM: S3C6410: use correct divider_shift in setrate_clksrc()
In s3c64xx_setrate_clksrc() we used sclk->shift, but actually need to
use sclk->divider_shift to correctly calculate the value for the divider
register.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
[ben-linux@fluff.org: Minor re-indentation of description]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-09-16 00:50:05 +01:00
Russell King 87d721ad7a Merge branch 'master' into devel 2009-09-12 12:04:37 +01:00
Ben Dooks db616eb676 ARM: S3C: Add S3C_DEV_NAND Kconfig entry
Currently the S5PC100 does not define S3C_PA_NAND, leaving the NAND device
definitions in arch/arm/plat-s3c/dev-nand.c unbuildable. Add a KConfig
entry to select whether this is built.

As backwards compatibility, both the S3C24XX and S3C64XX define the new
configuration in their main Kconfig files until better support for basing
this selection on a per-machine basis can be sorted out.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-08-16 23:54:58 +01:00
Mark Brown c233d94931 ARM: S3C: Move S3C64xx audio devices into S3C64xx directory
Allowing us to make the Kconfig a little bit saner.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-08-14 01:08:27 +01:00
Russell King 0a52ac8d18 Merge branch 's3c-fixes-rc4' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-07-30 10:47:55 +01:00
Mark Brown 9b71de49b0 S3C64XX: Fix ARMCLK configuration
The value of armclk_mask needs to be inverted for use as a mask on
the register value when updating ARM_RATIO.

This is critical for cpufreq support, without it attempts to scale
the frequency of the core trash pretty much the entire clock tree.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-07-29 23:47:14 +01:00
Mark Brown 1d91e1a296 S3C64XX: Fix get_rate() for ARMCLK
If the requested clock is faster than the parent clock then the
parent clock is the closest we can get to the request so we need
to return that instead of the requested clock.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-07-29 23:47:14 +01:00
Jaswinder Singh Rajput 2e6e2c143c ARM: includecheck fix: plat-s3c64xx/pm.c
fix the following 'make includecheck' warning:

  arch/arm/plat-s3c64xx/pm.c: plat/regs-gpio.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-07-25 17:08:23 +01:00
Marek Szyprowski 0b495737f3 [ARM] S3C64XX: add to_irq() support for EINT() GPIO
N group

Add to_irq() function to onvert gpio to irq for external interrupt
group (GPN).

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-06-22 14:11:56 +01:00
Peter Korsgaard 386f43517f [ARM] S3C64XX: clock.c: fix typo in usb-host clock ctrlbit
The usb-host clock was using the wrong define (the SCLK enable for the
usb-host-bus) to change the HCLK register instead of the HCLK_UHOST bit.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-06-22 14:11:56 +01:00
Peter Korsgaard 6ade7fa7bb [ARM] S3C64XX: fix HCLK gate defines
A few typos seems to have sneaked into the HCLK gate defines, causing the
usb host clock to not get enabled. Fix them according to the reference
manual and throw in the 3d accel bit for good measure.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-06-22 14:11:56 +01:00
Mark Brown b3748ddd80 [ARM] S3C64XX: Initial support for DVFS
This patch provides initial support for CPU frequency scaling on the
Samsung S3C ARM processors. Currently only S3C6410 processors are
supported, though addition of another data table with supported clock
rates should be sufficient to enable support for further CPUs.

Use the regulator framework to provide optional support for DVFS in
the S3C cpufreq driver. When a software controllable regulator is
configured the driver will use it to lower the supply voltage when
running at a lower frequency, giving improved power savings.

When regulator support is disabled or no regulator can be obtained
for VDDARM the driver will fall back to scaling only the frequency.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-06-16 23:36:24 +01:00
Russell King 547c32aeb5 Merge branch for-rmk-devel of git://aeryn.fluff.org.uk/bjdooks/linux into devel 2009-06-10 22:41:06 +01:00
Ben Dooks bcb8a0d6f5 [ARM] S3C: Merge next-s3c64xx-dma2 into for-rmk-devel
Merge branch 'next-s3c64xx-dma2' into for-rmk-devel

Conflicts:

	arch/arm/plat-s3c64xx/Makefile
2009-05-18 16:32:29 +01:00
Mark Brown 0b13406a1f [ARM] S3C64XX: Lower severity of DMA logging
The message was missing a severity macro so pick pr_debug().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-18 16:29:24 +01:00
Ben Dooks fa7a7883fe [ARM] S3C64XX: DMA support
Add support for the DMA blocks in the S3C64XX series of CPUS,
which are based on the ARM PL080 PrimeCell system.

Unfortunately, these DMA controllers diverge from the PL080
design by adding another DMA controller register and
configuration for OneNAND.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-18 16:29:21 +01:00
Ben Dooks 543899f610 [ARM] S3C64XX: Use common watchdog reset for system reset.
Use the newly moved <plat/watchdog-reset.h> to perform the
arch_reset() call which has been unimplemented for a while.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-17 23:40:30 +01:00
Marek Szyprowski beb9f4ed22 [ARM] S3C64XX: fix GPIO debug
Fix compilation bug when debug was enabled

Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-15 15:13:18 +01:00
Marek Szyprowski f36dd6e7c0 [ARM] S3C64XX: GPIO include cleanup
Cleanup arm/plat-s3c64xx/include/plat/gpio-bank-h.h include file.
Using shift-left operation with value >32 is a bad habit.

Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-15 15:13:06 +01:00
Ben Dooks 496a3f0927 [ARM] S3C64XX: Add ARM clock
Add ARM clock to provide 'arm' from the APLL to the ARM core.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:46:41 +01:00
Mark Brown 8f1ecf1d96 [ARM] S3C64XX: Configure clocks for DMA controller
Add missing DMA controller block clocks.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:14:27 +01:00
Werner Almesberger a03f7daf6d [ARM] S3C64XX: Add HCLKx2
Add doubled HCLK to S3C64xx.

Signed-off-by: Werner Almesberger <werner@openmoko.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:14:27 +01:00
Werner Almesberger e2c977dca2 [ARM] S3C6410: Add CAMIF clock
Add camera interface clock to S3C6410.

Signed-off-by: Werner Almesberger <werner@openmoko.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:14:27 +01:00
Ben Dooks 4faf686763 [ARM] S3C64XX: Add S3C6400 SDHCI setup support
Add support for S3C6400 SDHCI channels 0 and 1, making
the GPIO code common to both S3C6400 and S3C6410.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:58 +01:00
Ben Dooks e074f98032 [ARM] S3C64XX: Add S3C6400 CPU detection.
Add detection support for the S3C6400 SoC which has it's
id register in a different place to the S3C6410.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:57 +01:00
Ben Dooks a6925c1c51 [ARM] S3C6400: Core support for S3C6400 SoC
Add the core support files for the Samsung S3C6400 SoC.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:57 +01:00
Ben Dooks c07f87f22e [ARM] VIC: Add power management device
Add power management support to the VIC by registering
each VIC as a system device to get suspend/resume
events going.

Since the VIC registeration is done early, we need to
record the VICs in a static array which is used to add
the system devices later once the initcalls are run. This
means there is now a configuration value for the number
of VICs in the system.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:57 +01:00
Ben Dooks d87964c460 [ARM] S3C: GPIO PM core GPIOlib integration
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: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:56 +01:00
Ben Dooks 966bcc1438 [ARM] S3C64XX: Add IRQ PM code
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: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:56 +01:00
Ben Dooks 1deb507dc7 [ARM] S3C64XX: Add generic s3c64xx sys device.
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: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:56 +01:00
Ben Dooks bd117bd161 [ARM] S3C64XX: Initial support for PM (suspend to RAM)
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: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:55 +01:00
Ben Dooks 67b3e542ab [ARM] S3C64XX: Add USB OHCI support
Add USB OHCI host definitions.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-05-07 11:04:55 +01:00
Ben Dooks 1288b670e6 [ARM] S3C64XX: add AHB_CON and SPCON register address definitions
Add the address definitions for S3C64XX_AHB_CONx and
SPCON registers for use in the PM code.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-03-10 16:33:42 +00:00
Ben Dooks 36d543a3b5 [ARM] S3C64XX: Add definitions for the GPIO memory port configurations
Add defines for the registers that control the GPIO pins that are
run the memory interface.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-03-10 16:33:26 +00:00
Ben Dooks 2ae0b117a6 [ARM] S3C64XX: SYSCON power and sleep control register defines
Add the register defines for the sleep and power control
functions in the S3C64XX SYSCON register block.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2009-03-10 16:33:08 +00:00