Commit graph

13 commits

Author SHA1 Message Date
Shawn Guo
cc8f252b71 ARM: s3c64xx: use machine specific hook for late init
Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-08 20:36:24 +08:00
Mark Brown
d5b9cdbcf7 ARM: S3C64XX: Remove unconditional power domain disables
Now that we have software runtime power management support this code is
redundant.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-12 02:16:21 +09:00
Linus Torvalds
6d889d03ab Board-level changes
This adds and extends support for specific boards on a number of
 ARM platforms:  omap, imx, samsung, tegra, ...
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.11 (GNU/Linux)
 
 iQIVAwUATwtXvWCrR//JCVInAQKWjw/+IgL536c+ksAfIFLvQpDq0cV1J4xdGoqT
 AdpK4bp3ze3c5HduweyZ6tKun9Shfg3/wuJH5ZwoJDzfRpF1DpALJDSZxRfll/y9
 x7FbiVS8Kw+UJ02J1Z4jC4pguXtiUFGn9ebUI5V4wt5N8/xawFuWQ/6QybfmBSwP
 ZvZa0sONEZwIPMMRO1/Q31z7jotBhcx9vYorUu4xyTx8yRK2DLD1eZENa107KuVA
 0TQFreaGVvTgfLGTXy7wH41/VEKNj5qMOIBgpswLfQh85D0wXbZ98FsUt34t+r2D
 9XUg8nkNUbmTQ/NokiVgqoju0UVNmjITIjQWFV/3qmhlQo5kO8tKJV+qmVMkw49b
 VaazO/VpbY2+8ucHaTMKlnInUVwOOvlTRX8QJjOmyRWqYmk190jWYUtpsq9Xbt49
 h/U9Grz+koFpDmAZTyscm3Zlub9U9YYvnjrA8UnbxpCeBpE2qy2+UIucnF1hTf7K
 zn+kHvot4glubbRqLYhda3g+xomBf+xfvoGhFyutno2pBOm04Jd8E9ZQzkvxMnPn
 w2S8Lo78KtKXVcbZbQDRW5UhaiRnu969P0gX2PcSSeTNn7FZF4FME1RB+CXbWazx
 G4pfOfoso573m1UXjf/ueAdZU4H63WEMgULuXdzwmSlTZ97Lk5+sb+NHCPg5p4cA
 6QHbmogFraA=
 =lYb/
 -----END PGP SIGNATURE-----

Merge tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Board-level changes

This adds and extends support for specific boards on a number of
ARM platforms:  omap, imx, samsung, tegra, ...

* tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (49 commits)
  Enable 32 bit flash support for iMX21ADS board
  ARM: mx31pdk: Add MC13783 RTC support
  iomux-mx25: configuration to support CSPI3 on CSI pins
  MX1:apf9328: Add i2c support
  mioa701: add newly available DoC G3 chip
  arm/tegra: remove __initdata annotation from pinmux tables
  arm/tegra: Use bus notifiers to trigger pinmux setup
  arm/tegra: Refactor board-*-pinmux.c to share code
  arm/tegra: Fix mistake in Trimslice's pinmux
  arm/tegra: Rework Seaboard-vs-Ventana pinmux table
  arm/tegra: Remove useless entries from ventana_pinmux[]
  arm/tegra: PCIe: Remove include of mach/pinmux.h
  arm/tegra: Harmony PCIe: Don't touch pinmux
  arm/tegra: Add AUXDATA for tegra-pinmux and tegra-gpio
  arm/tegra: Split Seaboard GPIO table to allow for Ventana
  ARM: imx6q: generate imx6q dtb files
  arm/imx6q: Rename Sabreauto to Armadillo2
  arm/imx6q-sabrelite: add enet phy ksz9021rn fixup
  arm/imx6: add imx6q sabrelite board support
  dts/imx: rename uart labels to consistent with hw spec
  ...
2012-01-09 14:37:41 -08:00
Mark Brown
c656c30668 ARM: S3C64XX: Implement basic power domain support
The S3C64xx SoCs contain a set of gateable power domains which can be
enabled and disabled at runtime in order to save power.  Use the generic
power domain code to implement support for these in software, enabling
runtime control of most domains:

 - ETM (not supported in mainline).
 - Domain G: 3D acceleration (no mainline support).
 - Domain V: MFC (no mainline support).
 - Domain I: JPEG and camera interface (no mainline support).
 - Domain P: 2D acceleration, TV encoder and scaler (no mainline support)
 - Domain S: Security (no mainline support).
 - Domain F: LCD (driver already uses runtime PM), post processing and
   rotation (no mainline support).

The IROM domain is marked as always enabled as we should arrange for it
to be enabled when we suspend which will need a bit more work.

Due to all the conditional device registration that the platform does
wrap s3c_pm_init() with s3c64xx_pm_init() which actually puts the device
into the power domain after the machines have registered, looking for
platform data to tell if the device was registered. Since currently only
Cragganmore actually sets up PM that is the only machine updated.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-12-09 23:22:59 +01:00
Mark Brown
51ccd81d9b ARM: S3C64XX: Power gate unused domains
The S3C64xx CPUs have power gating support with a series of software
controllable power domains in the SoC. To take full advantage of these
we should implement runtime PM support but since several of the IP blocks
have no in tree drivers (and at this point aren't likely to acquire such
drivers) we can get some benefit from the hardware much more easily if
we just turn those blocks off unconditionally. This will cut down on the
leakage these domains generate without interfering with active usage.

Do this for:
 - Domain G: 3D acceleration
 - Domain V: MFC
 - Domain I: JPEG and camera interface
 - Domain P: 2D acceleration, TV encoder and scaler

This is easy to reverse if any of these devices do acquire drivers in the
future or as part of out of tree patches for them.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-12-03 19:49:26 +09:00
Tomasz Figa
d9018df007 ARM: S3C64XX: Save/restore S3C64XX_MODEM_MIFPCON on suspend/resume
This patch makes sure that the LCD bypass state is preserved during sleep mode.
It achieves this by saving the S3C64XX_MODEM_MIFPCON register, which is not
handled by any other code currently.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-19 16:38:05 +09:00
Tomasz Figa
348276f4a3 ARM: S3C64XX: Save/restore S3C64XX_SDMA_SEL on suspend/resume
This patch makes sure that S3C64XX_SDMA_SEL register is preserved during
sleep mode, as it is critical for DMA operation and the DMA driver alone
does not provide any power management facilities.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-09-19 16:38:00 +09:00
Abhilash Kesavan
f98d429d7a ARM: S3C64XX: Fix build break in PM debug
When S3C_PM_DEBUG_LED_SMDK is enabled for suspend/resume debugging, the following
compilation error occurs:

arch/arm/mach-s3c64xx/pm.c: In function 's3c_pm_debug_smdkled':
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'gpio_set_value'
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'S3C64XX_GPN'
arch/arm/mach-s3c64xx/pm.c: In function 's3c64xx_pm_init':
arch/arm/mach-s3c64xx/pm.c:184: error: implicit declaration of function 'gpio_request'
arch/arm/mach-s3c64xx/pm.c:188: error: implicit declaration of function 'gpio_direction_output'

Fix the error by including linux/gpio.h

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-08-19 20:57:36 +09:00
Russell King
29cb3cd208 ARM: pm: allow suspend finisher to return error codes
There are SoCs where attempting to enter a low power state is ignored,
and the CPU continues executing instructions with all state preserved.
It is over-complex at that point to disable the MMU just to call the
resume path.

Instead, allow the suspend finisher to return error codes to abort
suspend in this circumstance, where the cpu_suspend internals will then
unwind the saved state on the stack.  Also omit the tlb flush as no
changes to the page tables will have happened.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-07-02 09:54:01 +01:00
Russell King
e7089da956 ARM: pm: samsung: move cpu_suspend into C code
Move the call to cpu_suspend into C code, and noticing that all the
s3c_cpu_save implementations are now identical, we can move this
into the common samsung code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-06-24 08:48:44 +01:00
Joonyoung Shim
3185847957 ARM: S3C64XX: Remove gpio-bank-X header files
The gpio-bank-X header files of S3C64XX have definitions
which can be substituted by other common GPIO API.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2011-05-06 09:37:36 +09:00
Ben Dooks
fda225774e ARM: S3C64XX: PM: Synchronise wakeup mask on suspend
Use the new wakeup mask synchronisation code to set the
relevant wakeup mask bits.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20 21:07:08 +09:00
Ben Dooks
f7be9abaa5 ARM: S3C64XX: Move core support to mach-s3c64xx
Move the core S3C64XX support to mach-s3c64xx as it is unlikely to be used
outside of this directory. Also move the SoC header files in with it.

This includes the clock, cpu, cpufreq, dma, gpiolib and pll support.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-02-20 22:33:54 +00:00
Renamed from arch/arm/plat-s3c64xx/pm.c (Browse further)