Enable smc fan control for CI boards. Should
reduce the fan noise on systems with a higher
default fan profile.
v2: disable by default, add additional fan setup, rpm control
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73338
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Enable smc fan control for SI boards. Should
reduce the fan noise on systems with a higher
default fan profile.
v2: disable by default, add rpm controls
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=73338
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
be incomplete and broken, and the 3430sdp is only used in few automated
boot test systems AFAIK and those have been booting in device tree only
mode for quite some time now.
Note that this branch has a dependency to the related device tree
changes and GPMC changes sent in a separate pull request.
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Merge tag 'omap-for-v3.19/cleanup-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/omap-gpmc
Pull "omap clean-up for v3.19" from Tony Lindgren:
Drop few unused omap board files. The support for ti81xx is known to
be incomplete and broken, and the 3430sdp is only used in few automated
boot test systems AFAIK and those have been booting in device tree only
mode for quite some time now.
Note that this branch has a dependency to the related device tree
changes and GPMC changes sent in a separate pull request.
* tag 'omap-for-v3.19/cleanup-part1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Drop board file for 3430sdp
ARM: OMAP2+: Drop board file for ti8168evm
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
changes allow us to drop dependencies to bootloader timings now
that the known device tree entries have been fixed. So we can now
require proper timings to be configured and get rid of the legacy
smsc91x code.
Note that this branch has a dependency to the related device tree
branch sent in a separate pull request as timings are now required.
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Merge tag 'omap-for-v3.19/gpmc-timings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/omap-gpmc
Pull "omap gpmc changes for v3.19" from Tony Lindgren:
GPMC (General Purpose Memory Controller) changes for omaps. These
changes allow us to drop dependencies to bootloader timings now
that the known device tree entries have been fixed. So we can now
require proper timings to be configured and get rid of the legacy
smsc91x code.
Note that this branch has a dependency to the related device tree
branch sent in a separate pull request as timings are now required.
* tag 'omap-for-v3.19/gpmc-timings' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Remove unnecesary include in GPMC driver
ARM: OMAP2+: Drop legacy code for gpmc-smc91x.c
ARM: OMAP2+: Require proper GPMC timings for devices
ARM: OMAP2+: Show bootloader GPMC timings to allow configuring the .dts file
ARM: OMAP2+: Fix support for multiple devices on a GPMC chip select
ARM: OMAP2+: gpmc: Sanity check GPMC fck on probe
ARM: OMAP2+: gpmc: Keep Chip Select disabled while configuring it
ARM: OMAP2+: gpmc: Always enable A26-A11 for non NAND devices
ARM: OMAP2+: gpmc: Error out if timings fail in gpmc_probe_generic_child()
ARM: OMAP2+: gpmc: Print error message in set_gpmc_timing_reg()
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This adds support for ARM's Juno development board (rev 0).
It enables most of the board peripherals: UART, I2C, USB, MMC and
100Mb ethernet. There is no support at the moment for clock setting
and HDLCD driver which depends on it.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Having the instruction emulation submenu underneath "platform selection"
is a great way to hide options we don't want people to use, but somewhat
confusing when you stumble across it there.
Move the menuconfig option underneath "kernel features", where it makes
a bit more sense.
Signed-off-by: Will Deacon <will.deacon@arm.com>
DT files used in the compilation phase can be preprocessed by the C
preprocessor. This requires an include/dt-bindings directory to be
present in the arch/arm64/boot/dts directory.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This patch fixes newly introduced static checker warning in
ufshcd_parse_clock_info, introduced by UFS power management series.
Warning:
drivers/scsi/ufs/ufshcd-pltfrm.c:138 ufshcd_parse_clock_info()
warn: passing devm_ allocated variable to kfree. 'clkfreq'
To fix it we remove the kfree(clkfreq) statement.
In addition we removed the redundant goto label.
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch fixes newly introduced static checker warning in
__ufshcd_setup_clocks, introduced by UFS power management series.
Warning:
drivers/scsi/ufs/ufshcd.c:4474 __ufshcd_setup_clocks()
warn: we tested 'ret' before and it was 'false'
To fix it we remove the (!ret) from the condition.
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This patch fixes newly introduced sparse warning in
ufshcd_system_suspend, introduced by UFS power management series.
Sparse warning:
drivers/scsi/ufs/ufshcd.c:5118 ufshcd_system_suspend()
error: we previously assumed 'hba' could be null (see line 5089)
To fix it, we return 0 in case HBA is not initialized or is
not powered.
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Recover original IP register if the pre_handler doesn't change it.
Since current kprobes doesn't expect that another ftrace handler
may change regs->ip, it sets kprobe.addr + MCOUNT_INSN_SIZE to
regs->ip and returns to ftrace.
This seems wrong behavior since kprobes can recover regs->ip
and safely pass it to another handler.
This adds code which recovers original regs->ip passed from
ftrace right before returning to ftrace, so that another ftrace
user can change regs->ip.
Link: http://lkml.kernel.org/r/20141009130106.4698.26362.stgit@kbuild-f20.novalocal
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
- rate init for rk3288 clocks
- enablement of various peripherals
- new boardfile for Haoyu Marsboard (rk3066 based)
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Merge tag 'v3.19-rockchip-dts2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/dt
Pull "ARM: rockchip: second batch of dts related changes" from Heiko Stuebner:
- the dts part of the rk3288 smp support
- rate init for rk3288 clocks
- enablement of various peripherals
- new boardfile for Haoyu Marsboard (rk3066 based)
* tag 'v3.19-rockchip-dts2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: enable PWM on Radxa Rock
ARM: dts: rockchip: fix invalid unit-address in rk3188.dtsi
ARM: dts: rk3288: add VOP iommu nodes
ARM: dts: rockchip: add reset for CPU nodes
ARM: dts: rockchip: add intmem node for rk3288 smp support
ARM: dts: rockchip: add pmu references to cpus nodes
ARM: dts: rockchip: add serial aliases for rk3066 and rk3188
ARM: dts: rockchip: Add devicetree source for MarsBoard RK3066
ARM: dts: rockchip: Add EMAC Rockchip for RK3066 SoCs
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A lot of things happened during that merge window, but mostly:
- Preliminary Support for the A80
- New Boards Support
+ Mele M3
+ Banana Pi
+ Optimus
+ OLinuXino Lime2
- Device Tree Relicensing to GPLv2/X11 dual license
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Merge tag 'sunxi-dt-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/dt
Pull "Allwinner Device Tree Changes for 3.19" from Maxime Ripard:
A lot of things happened during that merge window, but mostly:
- Preliminary Support for the A80
- New Boards Support
+ Mele M3
+ Banana Pi
+ Optimus
+ OLinuXino Lime2
- Device Tree Relicensing to GPLv2/X11 dual license
* tag 'sunxi-dt-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (52 commits)
ARM: dts: sun6i: Add ethernet support to M9 board
ARM: sun6i: DT: Add PLL6 multiple outputs
ARM: dts: sun6i: Add support for the status led
ARM: dts: sun6i: Add EHCI support for the M9 board
ARM: dts: sunxi: Add regulator-boot-on property to ahci-5v regulator
ARM: dts: sun7i: Cubietruck: add power supply regulator for USB OTG VBUS
ARM: dts: sun7i: Cubietruck: override regulator pin
ARM: sun7i: dtsi: add support for usbphy0
ARM: dtsi: sunxi: add common VBUS regulator
ARM: dts: sunxi: Banana Pi: increase startup-delay for the GMAC PHY regulator
ARM: dts: sunxi: Use sun4i-a10-apb1-clk for sun6i/sun8i apb2 clocks.
ARM: dts: sunxi: unify APB1 clock
ARM: dts: sun6i: Re-parent ahb1_mux to pll6 as required by dma controller
ARM: sun5i: olinuxino: Relicense the device tree under GPLv2/X11
ARM: sun4i: cubieboard: Relicense the device tree under GPLv2/X11
ARM: sun7i: pcduino3: Relicense the device tree under GPLv2/X11
ARM: sun4i: pcduino: Relicense the device tree under GPLv2/X11
ARM: sun7i: olinuxino lime: Relicense the device tree under GPLv2/X11
ARM: dts: sun9i: Enable uart4 for A80 Optimus board
ARM: dts: sun9i: Add uart4 pinmux setting for A80 SoC
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull "ARM: meson: DTS related changes" from Carlo Caione:
here is the pull request for the DT related changes for the 3.19.
It's mainly the work done by Beniamino for the preliminary support of
the Amlogic Meson8 SoC, the support for L2 cache and the I2C
controller.
Please note that the support for the Tronsmart S89 Elite TV box has not
been included since the Meson8 development will be done now on a
different dev board kindly provided by Amlogic.
* tag 'v3.19-meson-dts' of https://github.com/carlocaione/linux-meson:
ARM: dts: meson: add I2C controller nodes
ARM: meson: DTS: enable L2 cache
ARM: dts: add dtsi for Amlogic Meson8 SoCs
DTS: meson: Add forgotten compatible in board DTS
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Introduce an event to trace the usage of emulated instructions. The
trace event is intended to help identify and encourage the migration
of legacy software using the emulation features.
Use this event to trace usage of swp and CP15 barrier emulation.
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The CP15 barrier instructions (CP15ISB, CP15DSB and CP15DMB) are
deprecated in the ARMv7 architecture, superseded by ISB, DSB and DMB
instructions respectively. Some implementations may provide the
ability to disable the CP15 barriers by disabling the CP15BEN bit in
SCTLR_EL1. If not enabled, the encodings for these instructions become
undefined.
To support legacy software using these instructions, this patch
register hooks to -
* emulate CP15 barriers and warn the user about their use
* toggle CP15BEN in SCTLR_EL1
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The SWP instruction was deprecated in the ARMv6 architecture. The
ARMv7 multiprocessing extensions mandate that SWP/SWPB instructions
are treated as undefined from reset, with the ability to enable them
through the System Control Register SW bit. With ARMv8, the option to
enable these instructions through System Control Register was dropped
as well.
To support legacy applications using these instructions, port the
emulation of the SWP and SWPB instructions from the arm port to arm64.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Typically, providing support for legacy instructions requires
emulating the behaviour of instructions whose encodings have become
undefined. If the instructions haven't been removed from the
architecture, there maybe an option in the implementation to turn
on/off the support for these instructions.
Create common infrastructure to support legacy instruction
emulation. In addition to emulation, also provide an option to support
hardware execution when supported. The default execution mode (one of
undef, emulate, hw exeuction) is dependent on the state of the
instruction (deprecated or obsolete) in the architecture and
can specified at the time of registering the instruction handlers. The
runtime state of the emulation can be controlled by writing to
individual nodes in sysctl. The expected default behaviour is
documented as part of this patch.
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Port support for AArch32 instruction condition code checking from arm
to arm64.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Add support to register hooks for undefined instructions. The handlers
will be called when the undefined instruction and the processor state
(as contained in pstate) match criteria used at registration.
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bamboo models do not support HID_DG_CONTACTMAX. Plus, Bamboo pen-only
has touch descriptor. This leads to some complications in the code.
This patch also fixes duplicated PAD interfeaces for Intuos Pen
models.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Graphire 4 only has two tablet buttons; Bamboo Fun touch ring is only
for PAD.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
ENODEV indicates no device is added. Hence, the associated pad input device
is simply freed.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This has mostly been about introducing A80 support
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Merge tag 'sunxi-core-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into next/soc
Pull "Allwinner Core Additions for 3.19" from Maxime Ripard:
This has mostly been about introducing A80 support
* tag 'sunxi-core-for-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
ARM: sunxi: make sun6i SMP ops static
ARM: sunxi: Select ARCH_HAS_RESET_CONTROLLER and RESET_CONTROLLER for sun9i
Documentation: sunxi: Add A80 datasheet link
devicetree: bindings: Document supported Allwinner sunxi SoCs
ARM: sunxi: Introduce Allwinner A80 support
devicetree: bindings: Add vendor prefix for Merrii Technology Co., Ltd.
ARM: sunxi: Add debug uart used by sun9i (Allwinner A80)
Documentation: sunxi: Update Allwinner SoC documentation (A31/A31s/A23)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull "ARM: meson: SOC related changes" from Carlo Caione:
This is the pull request for the SoC related changes for the 3.19.
The support for Meson8 is added together with L2 cache management.
* tag 'v3.19-meson-soc' of https://github.com/carlocaione/linux-meson:
clocksource: meson6: Select CLKSRC_MMIO
ARM: meson: enable L2 cache
ARM: meson: document meson8 compatible properties
ARM: meson: add meson8 support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'v3.19-rockchip-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into next/soc
Pull "code part of the rk3288 smp support" from Heiko Stübner:
here is the second batch of soc related changes, consisting only
of the smp support for rk3288.
Due to the slight misheap of the v3.18 cpuclk pull being merge, it is based
on exactly this merge commit from Olof to next/soc.
* tag 'v3.19-rockchip-soc2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: rockchip: add basic smp support for rk3288
ARM: rockchip: add option to access the pmu via a phandle in smp_operations
ARM: rockchip: convert to regmap and use pmu syscon if available
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
top of the multiplatform patches, this moves out
some drivers and reduced the amount of code carried
in arch/arm/mach-integrator.
- Move the Integrator/AP timer to drivers/clocksource
- Move the restart functionality to the device tree,
patches to enable restart for the Integrator have
been merged to the reset tree (orthogonal)
- Move debug LEDs to device tree (using the syscon
LED driver merged for v3.18)
- Move core module LEDs to device tree (using the
syscon LED driver merged for v3.18)
- Move the SoC driver (chip ID etc) to
drivers/soc/versatile/soc-integrator.c
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Merge tag 'integrator-v3.19-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/soc
Pull "ARM SoC Integrator updates for v3.19" from Linus Walleij:
Integrator updates for the v3.19 merge cycle on
top of the multiplatform patches, this moves out
some drivers and reduced the amount of code carried
in arch/arm/mach-integrator.
- Move the Integrator/AP timer to drivers/clocksource
- Move the restart functionality to the device tree,
patches to enable restart for the Integrator have
been merged to the reset tree (orthogonal)
- Move debug LEDs to device tree (using the syscon
LED driver merged for v3.18)
- Move core module LEDs to device tree (using the
syscon LED driver merged for v3.18)
- Move the SoC driver (chip ID etc) to
drivers/soc/versatile/soc-integrator.c
* tag 'integrator-v3.19-arm-soc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
soc: move SoC driver for the ARM Integrator
ARM: integrator: move core module LED to device tree
ARM: integrator: move debug LEDs to syscon LED driver
ARM: integrator: move restart to the device tree
ARM: integrator: move AP timer to clocksource
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Just use the acpi interface. That's what windows uses on this
generation and it's the only thing that seems to work reliably
on these generation parts.
You can still force the native backlight interface by setting
radeon.backlight=1
Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=88501
v2: merge into above if/else block
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
There was another instance where we were
holding pointers which could be long gone.
Fix that by caching only values pointed to
by such pointer.
Because no crash has been observed, this patch
will be sent on v3.19 merge window, instead of
-rc.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Always need to set bit 0 of RLC_CGTT_MGCG_OVERRIDE
to avoid unreliable doorbell updates in some cases.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
The cursor_set2 hook provides the cursor hotspot position within the
cursor image. When the hotspot position changes, we can adjust the cursor
position such that the hotspot doesn't move on the screen. This prevents
the cursor from appearing to intermittently jump around on the screen
when the position of the hotspot within the cursor image changes.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
After link start-up power mode will always be PWM G1. This is not
reflected in the pwr_info struct which will keep the previous values.
Since ufshcd_change_power_mode() tries to avoid unnecessary power mode
change if the requested power mode and current power mode are same,
power mode change won't execute again after driver initialization.
This patch solves the problem by setting pwr_info to PWM G1 after link
start-up.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
UFS driver adds three well known LUs in the initialization, but those
reference counts are not decremented, so it makes ufshcd module
impossible to unload.
This fixes it by putting scsi_device_put() in the initalization, and in
order to protect concurrent access to hba->sdev_ufs_device (UFS Device
W-LU) from manual delete, increment the reference count while requesting
device power mode setting.
The rest of W-LUs (hba->sdev_boot and hba->sdev_rpmb) are not directly
used from driver, so these references in struct ufs_hba are removed.
Signed-off-by: Akinobu Mita <mita@fixstars.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Reviewed-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Intel Multi-Flex LUNs choke on REPORT SUPPORTED OPERATION CODES
resulting in sd_mod hanging for several minutes on startup.
The issue was introduced with WRITE SAME discovery heuristics.
Fixes: 5db44863b6 ("[SCSI] sd: Implement support for WRITE SAME")
Signed-off-by: Christian Sünkenberg <christian.suenkenberg@hfg-karlsruhe.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
This function can be called now with i915 interrupts enabled, so the
corresponding WARN is incorrect, remove it. I think this was spotted by
Paulo during his review, but since I already removed the same WARN
from intel_suspend_gt_powersave() I missed then his point.
Spotted-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Use WFI when putting CPU1 to sleep. Don't hold CPU1 in reset
since that results in increased power consumption.
Reset CPU1 briefly during CPU1 bootup.
This has been tested for hotplug and suspend/resume and results
in no increased power consumption.
Signed-off-by: Alan Tull <atull@opensource.altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Spotted while reading and trying to understand how our error capture
code deals with full ppgtt.
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
I saw punit timeouts in vlv_set_rps_idle() while running various
subtests of pm_rpm. Increasing the timeout to 100ms got rid of the
issue.
Testcase: igt/pm_rpm
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Signed-off-by: Imre Deak <imre.deak@intel.com>
Tested-by: Guo Jinxian <jinxianx.guo@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Currently after doing DPMS-OFF on all outputs CDCLK won't be set to its
minimum value as it should. A subsequent modeset to turn off all outputs
will thus run with all power domains disabled, and notice that it needs
to change CDCLK to its minimum value. Since the power domains are
disabled this will emit a register-access-while-suspended WARN and fail
to set the minimum freq.
The proper solution for this is to set the minimum frequency during
DPMS-OFF. That needs a bigger rework that would take into account the
user DPMS setting too during the calculation of the new modesetting
configuration. Until that's done this stop-gap solution gets the PIPE-A
power domain during setting the CDCLK; this domain covers the HW blocks
needed for this.
Idea to use PIPE-A domain from Ville.
Testcase: igt/pm_rpm
Reference: https://bugs.freedesktop.org/show_bug.cgi?id=82939
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
