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The sequence for replacing the scanout buffer is much shorter than a
full mode change operation so implementing this callback considerably
speeds up cases where only a new framebuffer is to be scanned out.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
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Add support for the B and C planes which support RGB and YUV pixel
formats and can be used as overlays or hardware cursor. Currently 32-bit
XRGB as well as UYVY, YUV420 and YUV422 pixel formats are advertised.
Other formats should be easy to add but these are the most common ones
and should cover the majority of use-cases.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
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Tegra uses the CMA FB helpers so framebuffers passed to the driver need
to use the corresponding functions to access the underlying GEM objects.
This used to work because struct tegra_framebuffer was sufficiently
similar to struct drm_fb_cma but that isn't guaranteed to stay that way.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
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Driver implementations of the drm_crtc's .page_flip() function are
required to update the crtc->fb field on success to reflect that the new
framebuffer is now in use. This is important to keep reference counting
on the framebuffers balanced.
While at it, document this requirement to keep others from falling into
the same trap.
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Use the generic HDMI infoframe helpers to get rid of the duplicate
implementation in the radeon driver.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Use the generic HDMI infoframe helpers to get rid of the NVIDIA Tegra
reimplementation.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Add a generic helper to fill in an HDMI AVI infoframe with data
extracted from a DRM display mode.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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The modes are only used from within drm_edid.c so we move them there to
avoid creating duplicates by multiple inclusion of drm_edid_modes.h. As
a side-effect we can also get rid of a few variables that keep track of
the number of entries in the tables and use ARRAY_SIZE() instead.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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The same function had already been merged with a different name. Remove
the duplicate one but reuse some of its kerneldoc fragments for the
existing implementation.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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Pull trivial tree from Jiri Kosina:
"Assorted tiny fixes queued in trivial tree"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (22 commits)
DocBook: update EXPORT_SYMBOL entry to point at export.h
Documentation: update top level 00-INDEX file with new additions
ARM: at91/ide: remove unsused at91-ide Kconfig entry
percpu_counter.h: comment code for better readability
x86, efi: fix comment typo in head_32.S
IB: cxgb3: delay freeing mem untill entirely done with it
net: mvneta: remove unneeded version.h include
time: x86: report_lost_ticks doesn't exist any more
pcmcia: avoid static analysis complaint about use-after-free
fs/jfs: Fix typo in comment : 'how may' -> 'how many'
of: add missing documentation for of_platform_populate()
btrfs: remove unnecessary cur_trans set before goto loop in join_transaction
sound: soc: Fix typo in sound/codecs
treewide: Fix typo in various drivers
btrfs: fix comment typos
Update ibmvscsi module name in Kconfig.
powerpc: fix typo (utilties -> utilities)
of: fix spelling mistake in comment
h8300: Fix home page URL in h8300/README
xtensa: Fix home page URL in Kconfig
...
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The summary:
. Add display mode check operaion to mixer driver
- Mixer IP also can put certain restrictions on the proposed
display modes and these restrictions need to be considered
during mode negotiation, which happens immediately after
edid parsing.
. Set correct mode for range of resolutions
- With this patch, the mixer driver could find the correct mode
for the range of resolutions upto 1080 vertical lines.
. Support extra resolution for hdmi
- This patch programs the core and timing generator registers
using the timing data provided in drm_display_mode without
hard-coded configurations. So this patch adds additional PHY
configs to allow us to support more permissible resolutions
and refresh rates.
. Add device tree support for g2d
- This patch adds just the compatible string for exynos5250 SoC
so that with device tree enabling, this driver can be probed.
. And bug fixes and code cleanups.
* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: Add device tree based discovery support for G2D
drm/exynos: hdmi: support extra resolutions using drm_display_mode timings
drm/exynos: mixer: set correct mode for range of resolutions
drm/exynos: implement display-mode-check callback in mixer driver
drm/exynos: add display-mode-check operation to exynos_mixer_ops struct
drm/exynos: release resources properly when fb creation is failed.
drm/exynos: fix wrong pointer access at vm close.
drm/exynos: Add missing braces around sizeof
drm/exynos: consider exception case to fb handle creation
drm/exynos: fix iommu address allocation order
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The values of n, m1 and m2 needs to be subtracted by 2 before writing them to
the FP register. The dot clock calculation already thinks of these values in
register form so we must also specify them as such.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pull ARM SoC-specific updates from Arnd Bergmann:
"This is a larger set of new functionality for the existing SoC
families, including:
- vt8500 gains support for new CPU cores, notably the Cortex-A9 based
wm8850
- prima2 gains support for the "marco" SoC family, its SMP based
cousin
- tegra gains support for the new Tegra4 (Tegra114) family
- socfpga now supports a newer version of the hardware including SMP
- i.mx31 and bcm2835 are now using DT probing for their clocks
- lots of updates for sh-mobile
- OMAP updates for clocks, power management and USB
- i.mx6q and tegra now support cpuidle
- kirkwood now supports PCIe hot plugging
- tegra clock support is updated
- tegra USB PHY probing gets implemented diffently"
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (148 commits)
ARM: prima2: remove duplicate v7_invalidate_l1
ARM: shmobile: r8a7779: Correct TMU clock support again
ARM: prima2: fix __init section for cpu hotplug
ARM: OMAP: Consolidate OMAP USB-HS platform data (part 3/3)
ARM: OMAP: Consolidate OMAP USB-HS platform data (part 1/3)
arm: socfpga: Add SMP support for actual socfpga harware
arm: Add v7_invalidate_l1 to cache-v7.S
arm: socfpga: Add entries to enable make dtbs socfpga
arm: socfpga: Add new device tree source for actual socfpga HW
ARM: tegra: sort Kconfig selects for Tegra114
ARM: tegra: enable ARCH_REQUIRE_GPIOLIB for Tegra114
ARM: tegra: Fix build error w/ ARCH_TEGRA_114_SOC w/o ARCH_TEGRA_3x_SOC
ARM: tegra: Fix build error for gic update
ARM: tegra: remove empty tegra_smp_init_cpus()
ARM: shmobile: Register ARM architected timer
ARM: MARCO: fix the build issue due to gic-vic-to-irqchip move
ARM: shmobile: r8a7779: Correct TMU clock support
ARM: mxs_defconfig: Select CONFIG_DEVTMPFS_MOUNT
ARM: mxs: decrease mxs_clockevent_device.min_delta_ns to 2 clock cycles
ARM: mxs: use apbx bus clock to drive the timers on timrotv2
...
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Pull tty/serial patches from Greg Kroah-Hartman:
"Here's the big tty/serial driver patches for 3.9-rc1.
More tty port rework and fixes from Jiri here, as well as lots of
individual serial driver updates and fixes.
All of these have been in the linux-next tree for a while."
* tag 'tty-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits)
tty: mxser: improve error handling in mxser_probe() and mxser_module_init()
serial: imx: fix uninitialized variable warning
serial: tegra: assume CONFIG_OF
TTY: do not update atime/mtime on read/write
lguest: select CONFIG_TTY to build properly.
ARM defconfigs: add missing inclusions of linux/platform_device.h
fb/exynos: include platform_device.h
ARM: sa1100/assabet: include platform_device.h directly
serial: imx: Fix recursive locking bug
pps: Fix build breakage from decoupling pps from tty
tty: Remove ancient hardpps()
pps: Additional cleanups in uart_handle_dcd_change
pps: Move timestamp read into PPS code proper
pps: Don't crash the machine when exiting will do
pps: Fix a use-after free bug when unregistering a source.
pps: Use pps_lookup_dev to reduce ldisc coupling
pps: Add pps_lookup_dev() function
tty: serial: uartlite: Support uartlite on big and little endian systems
tty: serial: uartlite: Fix sparse and checkpatch warnings
serial/arc-uart: Miscll DT related updates (Grant's review comments)
...
Fix up trivial conflicts, mostly just due to the TTY config option
clashing with the EXPERIMENTAL removal.
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We trim the fb to fit the CRTC by computing the offset of that CRTC to
its nearest tile_row origin. This allows us to use framebuffers that are
larger than the CRTC limits without additional work.
However, we failed to compute the offset for a linear framebuffer
correctly as we treated its x-advance in whole tiles (instead of the
linear increment expected), leaving the CRTC misaligned with its
contents.
Fixes regression from commit c2c75131244507c93f812862fdbd4f3a37139401
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Jul 5 12:17:30 2012 +0200
drm/i915: adjust framebuffer base address on gen4+
v2: Adjust relative x-coordinate after linear alignment (vsyrjala)
v3: Repaint with pokadots (vsyrjala)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61152
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Pull driver core patches from Greg Kroah-Hartman:
"Here is the big driver core merge for 3.9-rc1
There are two major series here, both of which touch lots of drivers
all over the kernel, and will cause you some merge conflicts:
- add a new function called devm_ioremap_resource() to properly be
able to check return values.
- remove CONFIG_EXPERIMENTAL
Other than those patches, there's not much here, some minor fixes and
updates"
Fix up trivial conflicts
* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
base: memory: fix soft/hard_offline_page permissions
drivercore: Fix ordering between deferred_probe and exiting initcalls
backlight: fix class_find_device() arguments
TTY: mark tty_get_device call with the proper const values
driver-core: constify data for class_find_device()
firmware: Ignore abort check when no user-helper is used
firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
firmware: Make user-mode helper optional
firmware: Refactoring for splitting user-mode helper code
Driver core: treat unregistered bus_types as having no devices
watchdog: Convert to devm_ioremap_resource()
thermal: Convert to devm_ioremap_resource()
spi: Convert to devm_ioremap_resource()
power: Convert to devm_ioremap_resource()
mtd: Convert to devm_ioremap_resource()
mmc: Convert to devm_ioremap_resource()
mfd: Convert to devm_ioremap_resource()
media: Convert to devm_ioremap_resource()
iommu: Convert to devm_ioremap_resource()
drm: Convert to devm_ioremap_resource()
...
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This patch adds device tree match table for Exynos G2D controller.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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This patch programs the core and timing generator registers using the
timing data provided in drm_display_mode and not using hard-coded
configurations.
Additional PHY configs has been added. This allows us to support more
permissible resolutions and refresh rates.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Shirish S <s.shirish@samsung.com>
Signed-off-by: Akshay Saraswat <Akshay.s@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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With this patch, mixer driver find the correct resolution mode for
the range of resolutions, upto 1080 vertical lines. Resolution will
be categorized to NTSC SD, PAL SD or HD and the correct mode is
set to the mixer configuration register.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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This patch adds the implementation of check_timing callback in the mixer
driver. Based on the mixer version, correct set of restrictions will be
exposed by the mixer driver. A resolution will be acceptable only if passes
the criteria set by mixer and hdmi IPs.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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This patch adds the display mode check operation to exynos_mixer_ops
in drm-common-hdmi. In Exynos SoCs, mixer IP can put certain restrictions
on the proposed display modes. These restriction needs to be considered
during mode negotiation, which happens immediately after edid parsing.
Both, mixer check-mode and hdmi check-timing callbacks are called one after
another and ANDed result is returned back.
Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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This patch releases allocated resources properly when
exynos_user_fb_create() is failed.
Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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This patch fixes wrong pointer access issue to filp->f_op and
filp->private_data.
The exynos_drm_gem_mmap_ioctl() changes filp->f_op and
filp->private_data temporarily and restore them to use
original ones in exynos_drm_gem_mmap_buffer() but there
was no lock between the changing and the restoring so
wrong pointer access to filp->f_op and filp->private_data
was induced by vm close callback.
So this patch uses mutex lock properly to resolve this issue.
Signed-off-by: YoungJun Cho <yj44.cho@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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Fixes the following checkpatch warning:
WARNING: sizeof *sgt should be sizeof(*sgt)
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
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GETFB ioctl request creates a new handle to only one gem object
so it should check if the given fb has one gem object.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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This patch modifies iommu address allocation order from 64k
to 4k. 64k order causes waste of the io space and this was
our mistakes.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
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KMS driver for TI LCD controller
* 'tilcdc-next' of git://people.freedesktop.org/~robclark/linux:
drm/tilcdc: add support for LCD panels (v5)
drm/tilcdc: add encoder slave (v2)
drm/i2c: nxp-tda998x (v3)
drm/tilcdc: add TI LCD Controller DRM driver (v4)
drm/nouveau: use i2c encoder helper wrappers
drm: i2c encoder helper wrappers
drm/cma: add debugfs helpers
drm: small fix in drm_send_vblank_event()
drm: Don't set the plane->fb to NULL on successfull set_plane
drm/cma-helper: fixup compilation
Conflicts:
drivers/gpu/drm/Kconfig
drivers/gpu/drm/Makefile
drivers/gpu/drm/drm_fb_cma_helper.c
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More drm-next bits for radeon. Just bug fixes.
* 'drm-next-3.9' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: properly validate the atpx interface
drm/radeon: switch get_gpu_clock() to a callback (v2)
drm/radeon: add a asic callback to get the xclk
drm/radeon: Avoid NULL pointer dereference from atom_index_iio() allocation failure
drm/radeon: remove overzealous warning in hdmi handling
drm/radeon: fix multi-head power profile stability on BTC+ asics
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restore debugfs vbios, fix multiple actions with supervisor intrs
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau: restore debugfs/vbios.rom support
drm/nv50-/kms: remove UPDATE methods after each encoder disconnect
drm/nvd0/disp: handle multiple actions from one set of supervisor intrs
drm/nv50/disp: handle multiple actions from one set of supervisor intrs
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Some bioses don't set the function mask correctly
which caused required functions to be disabled.
Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=53111
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Cleans up the code for future asics
v2: rebase, fix some missing radeon_asic updates
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This is required to get the reference clock used
by the gfx engine for things like timestamps. Fixes
support for GL extensions the use timestamps on
certain boards.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Smatch anlysis:
drivers/gpu/drm/radeon/atom.c:1242 atom_index_iio() error: potential null
dereference 'ctx->iio'. (kzalloc returns null)
Also cleaned up some checks before calls to kfree(). kfree(NULL) is OK.
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Michel Dänzer" <michel.daenzer@amd.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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hdmi audio works fine. The warning just confuses users.
fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=44341
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Cc: stable@vger.kernel.org
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vddci needs to track mclk for multi-head.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
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Supervisor can now handle more than one operation within a single
series of interrupts.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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In v3.3, the gma500 drm driver moved from staging to drm group by
Alan Cox's 3abcf41fb patch. the gma500 drm driver should control
brightness well and don't need gma500 stub driver anymore.
Reference:
http://lists.freedesktop.org/archives/dri-devel/2012-May/023426.html
http://lists.freedesktop.org/archives/dri-devel/2012-May/023467.html
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Lee, Chun-Yi <jlee@suse.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Nothing terribly exciting in here probably:
- reworked thermal stuff from mupuf/I, has a chance of possibly working
well enough when we get to being able to reclock..
- driver will report mmio access faults on chipsets where it's supported
- will now sleep waiting on fences on nv84+ rather than polling
- some cleanup of the internal fencing, looking towards sli/dmabuf sync
- initial support for anx9805 dp/tmds encoder
- nv50+ display fixes related to the above, and also might fix a few
other issues
- nicer error reporting (will log process names with channel errors)
- various other random fixes
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: (87 commits)
nouveau: ACPI support depends on X86 and X86_PLATFORM_DEVICES
drm/nouveau/i2c: add support for ddc/aux, and dp link training on anx9805
drm/nv50: initial kms support for off-chip TMDS/DP encoders
drm/nv50-/disp: initial supervisor support for off-chip encoders
drm/nv50-/disp: initial work towards supporting external encoders
drm/nv50-/kms: remove unnecessary wait-for-completion points
drm/nv50-/disp: move DP link training to core and train from supervisor
drm/nv50-/disp: handle supervisor tasks from workqueue
drm/nouveau/i2c: create proper chipset-specific class implementations
drm/nv50-/disp: 0x0000 is a valid udisp config value
drm/nv50/devinit: reverse the logic for running encoder init scripts
drm/nouveau/bios: store a type/mask hash in parsed dcb data
drm/nouveau/i2c: extend type to 16-bits, add lookup-by-type function
drm/nouveau/i2c: aux channels not necessarily on nvio
drm/nouveau/i2c: fix a bit of a thinko in nv_wri2cr helper functions
drm/nouveau/bios: parse external transmitter type if off-chip
drm/nouveau: store i2c port pointer directly in nouveau_encoder
drm/nouveau/i2c: handle i2c/aux mux outside of port lookup function
drm/nv50/graph: avoid touching 400724, it doesn't exist
drm/nouveau: Fix DPMS 1 on G4 Snowball, from snow white to coal black.
...
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If I build nouveau on ia64, Kconfig warns:
warning: (DRM_NOUVEAU) selects ACPI_WMI which has unmet direct dependencies (X86 && X86_PLATFORM_DEVICES && ACPI)
warning: (DRM_NOUVEAU) selects MXM_WMI which has unmet direct dependencies (X86 && X86_PLATFORM_DEVICES && ACPI_WMI)
Make all the ACPI support depend on X86 and select
X86_PLATFORM_DEVICES.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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DP link training is now handled as part of the supervisor processing,
and can no longer race with it.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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We need to be able to do link training for PIOR-connected ANX9805 from
the third supervisor handler (due to script ordering in the bios, can't
have the "user" call train because some settings are overwritten from
the modesetting bios scripts).
This moves link training for SOR-connected DP encoders to the second
supervisor interrupt, *before* we call the modesetting scripts (yes,
different ordering from PIOR is necessary). This is useful since we
should now be able to remove some hacks to workaround races between
the supervisor and link training paths.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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i2c_algo_bit sleeps...
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Thierry Reding
Linus Torvalds
Dave Airlie
Patrik Jakobsson
Chris Wilson
Ajay Kumar
Sean Paul
Rahul Sharma
YoungJun Cho
Sachin Kamat
Inki Dae
Alex Deucher
Tim Gardner
Marcin Slusarz
Ben Skeggs
Lee, Chun-Yi
Ben Hutchings