It's probably impossible to hit it now on mainline kernel.
I only noticed it because one of my debugging patches uses it.
Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Reported-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

The page flip handler stores the page flip event pointer and then calls
drm_vblank_get() to enable the vblank interrupt. Due to the vblank off
delay, the vblank interrupt can be enabled in the hardware at that
point, even if the vblank reference count is equal to 0. If a vblank
interrupt is triggered between storing the event pointer and calling
drm_vblank_get(), the page flip completion handler will process the
event and call drm_vblank_put() with a reference count equal to 0. This
will result in a BUG_ON.

Fix the race condition by calling drm_vblank_get() before storing the
event pointer.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The EXYNOS DRM driver uses drm_vm_open_locked in its mmap() function,
and it can be built as a loadable module, which currently fails.
This exports the symbol from the DRM core to avoid

ERROR: "drm_vm_open_locked" [drivers/gpu/drm/exynos/exynosdrm.ko] undefined!
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The tilcdc driver fails to be built as a module because of extraneous
MODULE_DEVICE_TABLE entries:

drivers/gpu/drm/tilcdc/tilcdc_slave.o:(.data+0x54): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here
drivers/gpu/drm/tilcdc/tilcdc_panel.o:(.data+0x54): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here
drivers/gpu/drm/tilcdc/tilcdc_drv.o:(.data+0x184): multiple definition of `__mod_of_device_table'
drivers/gpu/drm/tilcdc/tilcdc_tfp410.o:(.data+0x54): first defined here

Since the entire point of these entries is to make the module autoload
when one of the devices is present, it's enough to keep the one entry
for "ti,am33xx-tilcdc", which should always be there if any of the
others are.
Acked-by: NRob Clark <robdclark@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Two fixes for gma500. First one from Anisse allows us to handle ASLE irqs even
when BIOS doesn't trigger a pipe event irq. The second one allows dual head
setups to have a big shared framebuffer.

* 'gma500-fixes' of git://github.com/patjak/drm-gma500:
  drm/gma500: Increase max resolution for mode setting
  drm/gma500: fix backlight hotkeys behaviour on netbooks

By having a higher max resolution we can now set up a virtual
framebuffer that spans several monitors. 4096 should be ok since we're
gen 3 or higher and should be enough for most dual head setups.
Signed-off-by: NPatrik Jakobsson <patrik.r.jakobsson@gmail.com>

Backlight hotkeys weren't working before on certain cedartrail laptops.

The source of this problem is that the hotkeys' ASLE opregion interrupts
were simply ignored. Driver seemed to expect the interrupt to be
associated with a pipe, but it wasn't.

Accepting the ASLE interrupt without an associated pipe event flag fixes
the issue, the backlight code is called when needed, making the
brightness keys work properly.

[patrik: This patch affects irq handling on any netbook with opregion support]

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=833597
Reference: http://lists.freedesktop.org/archives/dri-devel/2012-July/025279.html
Cc: stable@kernel.org
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Signed-off-by: NPatrik Jakobsson <patrik.r.jakobsson@gmail.com>

Fixes the following checkpatch error:
ERROR: "foo * bar" should be "foo *bar"
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Silences the following checkpatch warning:
WARNING: please, no space before tabs
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Silences the following checkpatch warning:
WARNING: braces {} are not necessary for any arm of this statement
	if (priv->rev == 1) {
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

  When make with EXTRA_CFLAGS=-W, it will report error.
  so give a check in Makefile.
Signed-off-by: NChen Gang <gang.chen@asianux.com>
Signed-off-by: NVladimir Kondratiev <qca_vkondrat@qca.qualcomm.com>
Acked-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Instead of checking if num_encoders is zero, it is being assigned 0.
Convert the assignment to a check.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NRob Clark <robdclark@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

commit ae128786
Author: Dave Airlie <airlied@redhat.com>
Date:   Thu Jan 24 16:12:41 2013 +1000

    fbcon: don't lose the console font across generic->chip driver switch

uses a pointer in vc->vc_font.data to load font into the new driver.
However if the font is actually freed, we need to clear the data
so that we don't reload font from dangling pointer.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=892340Signed-off-by: NMika Kuoppala <mika.kuoppala@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

Alex writes:
A few more updates for 3.10.  Nothing too major here.  Mostly bug fixes.
The big changes are adding golden register init for 7xx and newer asics
and some audio cleanups.

* 'drm-next-3.10-2' of git://people.freedesktop.org/~agd5f/linux: (32 commits)
  drm/radeon: disable UVD advanced semaphore mode
  drm/radeon: fix endian bugs in radeon_atom_get_clock_dividers() (v3)
  drm/radeon: fix up audio dto programming for DCE2
  drm/radeon/evergreen: set SAD registers
  drm: add drm_edid_to_eld helper extracting SADs from EDID (v2)
  drm/radeon/si: add support for golden register init
  drm/radeon/cayman,TN: add support for golden register init (v2)
  drm/radeon/evergreen: add support for golden register init
  drm/radeon/7xx: add support for golden register init
  drm/radeon: add helper function to support golden registers
  drm/radeon: fix typo in si_select_se_sh()
  drm/radeon: switch audio handling to use callbacks
  drm/radeon: clean up audio dto programming
  drm/radeon: clean up audio supported check
  drm/radeon: raise UVD clocks on init v3
  drm/radeon: raise UVD clocks only on demand
  drm/radeon: put UVD PLLs in bypass mode
  drm/radeon: disable audio format interrupts on Evergreen
  drm/radeon: fix hdmi mode enable on RS600/RS690/RS740
  drm/radeon/evergreen: write default channel numbers
  ...

Not needed and seems to cause some problems.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

v2: fix copy paste typo.
v3: clarify new union member
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Uses a different register than DCE3 asics.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This allows audio (alsa) driver to read them and have a clue about audio
capabilities of connected receiver. This has been verified to be
compatible with fglrx behaviour for Onkyo TX-SR605 and Denon 1912.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Some devices (ATI/AMD cards) don't support passing ELD struct to the
hardware but just require filling specific registers and then the
hardware/firmware does the rest. In such cases we need to read the info
from SAD blocks and put them in the correct registers.

agd5f: note that the returned pointer needs to be kfreed as per
Christian's suggestion.

v2: fix warning
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

v2: add richland support
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Golden registers are arrays of register settings from the
hw team that need to be initialized at asic startup.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Register audio callbacks for asic where we support
audio.  Cleans up the code and makes it easier to
add support for newer asics.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Split into DCE2/3 and DCE4/5 variants. Still todo is to
calculate the DTO dividers properly.  Add proper formula
to the comments.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

v2: not only raise the clocks on VCPU boot, but also on IB test.
v3: agd5f: fix r600_uvd_init return value.

fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=63730Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

That not only saves some power, but also solves problems with
older chips where an idle UVD block on higher clocks can
cause problems.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Just power down the PLL when we get a VCLK or DCLK of zero.
Enabling the bypass mode early should also allow us to
switch UVD clocks on the fly.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

The audio format change interrupts are an aid in debugging,
but not required for operation.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

These chips were previously skipped since they are
pre-R600.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Driver fglrx setups audio and ACR packets after basic initialization,
which sounds sane, do the same.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Closed source driver fglrx seems to enable infoframes and audio packets
at the end, which makes sense, do the same.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>