Many embedded drm devices do not have a IOMMU and no dedicated
memory for graphics. These devices use CMA (Contiguous Memory
Allocator) backed graphics memory. This patch provides helper
functions to be able to share the code. The code technically does
not depend on CMA as the backend allocator, the name has been chosen
because CMA makes for a nice, short but still descriptive function
prefix.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lars-Peter Clausen <lars@metafoo.de>
[Make DRM_GEM_CMA_HELPER a boolean Kconfig option]
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Limit printing bad edid information at one time per connector.
Connector that are connected to a bad monitor/kvm will likely
stay connected to the same bad monitor/kvm and it makes no
sense to keep printing the bad edid message.
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This patch removes a unused struct psb_intel_connector
Sparse gives a warning:
drivers/gpu/drm/gma500/cdv_intel_hdmi.c:142:30: warning:
unused variable ‘psb_intel_connector’ [-Wunused-variable]
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The memory return by kzalloc() or kmem_cache_zalloc() has already
be set to zero, so remove useless memset(0).
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The current logic for probing ddc is limited to
2 blocks (256 bytes), this patch adds support
for the 4 block (512) data.
To do this, a single 8-bit segment index is
passed to the display via the I2C address 30h.
Data from the selected segment is then immediately
read via the regular DDC2 address using a repeated
I2C 'START' signal.
Signed-off-by: Shirish S <s.shirish@samsung.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Since arch/arm/include/asm/pgtable.h contains:
#define io_remap_pfn_range(vma,from,pfn,size,prot) \
remap_pfn_range(vma, from, pfn, size, prot)
there is no point treating ARM as a special case in distinguishing
between remap_pfn_range() and io_remap_pfn_range().
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Dave Airlie <airlied@redhat.com>
There are two slightly different pieces of code for HDMI VSDB
detection. Unify the code into a single helper function.
Also fix a bug where drm_detect_hdmi_monitor() would stop looking
for the HDMI VSDB after the first vendor specific block is found,
whether or not that block happened to be the HDMI VSDB. The
standard allows for any number of vendor specific blocks to be
present.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The length of HDMI VSDB must be at least 5 bytes. Other than the minimum,
nothing else about the length is specified. Check the length before
accessing any additional field beyond the minimum length.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Make sure drm_detect_hdmi_monitor() and drm_detect_monitor_audio() don't
access beyond the extension block.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
At the moment, there is an inconsistency in the way modes are named.
Modes with timings parsed from the EDID information will call
drm_mode_set_name(), which will name the mode using this form:
<horizontal-res>x<vertical-res><interlace-char>
eg, 1920x1080i for an interlaced mode, or 1920x1080 for a progressive
mode.
However, timings parsed using the tables in drm_edid_modes.h do not
have the 'i' suffix. You are left to deduce that they're interlaced
from xrandr's output by the lower vertical refresh frequencies.
This patch changes the interlaced mode names in drm_edid_modes.h to
follow the style set by drm_mode_set_name(), which makes it clear
in xrandr which modes are interlaced and which are not (as xrandr
groups the refresh rates on a line according to the name field.)
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
DRM users should be able to create/destroy/manage dumb- and frame-buffers
without DRM_MASTER. These ioctls do not affect modesetting so there is no
reason to protect them by drm-master. Particularly, destroying buffers
should always be possible as a client has only access to buffers that they
created. Hence, there is no reason to prevent a client from destroying the
buffers, considering a simple close() would destroy them, anyway.
Furthermore, a display-server currently cannot shutdown correctly if it
does not have DRM_MASTER. If some other display-server becomes active (or
the kernel console), then the background display-server is unable to
destroy its buffers.
Under special curcumstances (like monitor reconfiguration) this might even
happen during runtime.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
In drivers/usb/Kconfig "config USB_ARCH_HAS_HCD" is within "if USB_SUPPORT"
statement.
In drivers/gpu/drm/Kconfig "config DRM_USB" depends on USB_ARCH_HAS_HCD
but selects USB_SUPPORT which leads to the error for udl Kconfig:
$ yes "" | make oldconfig
scripts/kconfig/conf --oldconfig Kconfig
drivers/gpu/drm/udl/Kconfig:1:error: recursive dependency detected!
drivers/gpu/drm/udl/Kconfig:1: symbol DRM_UDL depends on USB_ARCH_HAS_HCD
drivers/usb/Kconfig:76: symbol USB_ARCH_HAS_HCD depends on USB_SUPPORT
drivers/usb/Kconfig:58: symbol USB_SUPPORT is selected by DRM_USB
drivers/gpu/drm/Kconfig:22: symbol DRM_USB is selected by DRM_UDL
Fix this by changing from select to depends on USB_SUPPORT in
"config DRM_USB".
This is a follow-up fix to df0b344300
in Dave's drm-next GIT branch.
[ v2: Restore old status, but change from select to depends on USB_SUPPORT ]
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
Otherwise it just won't compile ...
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@gmail.com>
Daniel writes:
"New stuff for -next. Highlights:
- prep patches for the modeset rework. Note that one of those patches
touches the fb helper in the common drm code.
- hasw hdmi audio support (Wang Xingchao)
- improved instdone dumping for gen7 (Ben)
- unbound tracking and a few follow-up patches from Chris
- dma_buf->begin/end_cpu_access plus fix for drm/udl (Dave)
- improve mmio error reporting for hsw
- prep patch for WQ_NON_REENTRANT removal (Tejun Heo)
"
* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (41 commits)
drm/i915: Remove __GFP_NO_KSWAPD
drm/i915: disable rc6 on ilk when vt-d is enabled
drm/i915: Avoid unbinding due to an interrupted pin_and_fence during execbuffer
drm/i915: Use new INSTDONE registers (Gen7+)
drm/i915: Add new INSTDONE registers
drm/i915: Extract reading INSTDONE
drm/i915: Use a non-blocking wait for set-to-domain ioctl
drm/i915: Juggle code order to ease flow of the next patch
drm/i915: Use cpu relocations if the object is in the GTT but not mappable
drm/i915: Extract general object init routine
drm/i915: Protect private gem objects from truncate (such as imported dmabuf)
drm/i915: Only pwrite through the GTT if there is space in the aperture
i915: use alloc_ordered_workqueue() instead of explicit UNBOUND w/ max_active = 1
drm/i915: Find unclaimed MMIO writes.
drm/i915: Add ERR_INT to gen7 error state
drm/i915: Cantiga+ cannot handle a hsync front porch of 0
drm/i915: fix reassignment of variable "intel_dp->DP"
drm/i915: Try harder to allocate an mmap_offset
drm/i915: Show pin count in debugfs
drm/i915: Show (count, size) of purgeable objects in i915_gem_objects
...
When I pulled-in today's drm-intel-next into linux-next (next-20120824)
I saw this build-breakage:
drivers/gpu/drm/i915/i915_gem.c: In function 'i915_gem_object_get_pages_gtt':
drivers/gpu/drm/i915/i915_gem.c:1778:40: error: '__GFP_NO_KSWAPD' undeclared (first use in this function)
drivers/gpu/drm/i915/i915_gem.c:1778:40: note: each undeclared identifier is reported only once for each function it appears in
This is caused by commit ba099ef165f8 ("mm: remove __GFP_NO_KSWAPD")
and commit b6beae2c2014 ("mm: remove __GFP_NO_KSWAPD fixes") in
linux-next (next-20120824).
Fix this by removing __GFP_NO_KSWAPD from drm/i915 driver.
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
There was some merge conflicts in -next and they weren't so pretty, so
backmerge now to avoid them.
Conflicts:
drivers/gpu/drm/i915/i915_gem.c
drivers/gpu/drm/i915/intel_modes.c
It blows up. And hopefully this is the root-cause of the mysterious
rc6 related hang on ilk. For reference, the commit that enabled rc6 on
ilk again is:
commit 456470eb58
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Aug 8 23:35:40 2012 +0200
drm/i915: enable rc6 on ilk again
Reported-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
If we need to stall in order to complete the pin_and_fence operation
during execbuffer reservation, there is a high likelihood that the
operation will be interrupted by a signal (thanks X!). In order to
simplify the cleanup along that error path, the object was
unconditionally unbound and the error propagated. However, being
interrupted here is far more common than I would like and so we can
strive to avoid the extra work by eliminating the forced unbind.
v2: In discussion over the indecent colour of the new functions and
unwind path, we realised that we can use the new unreserve function to
clean up the code even further.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Using the extracted INSTDONE reading, and our new register definitions,
update our hangcheck detection and error collection to use it. This
primarily means changing == to memcmp, and changing = to memcpy.
Hopefully this will give more info on error dump, and provide more
accurate hangcheck detection (both are actually TBD).
Also, remove the reading of instdone1 from the ring error collection
function, and just crap everything in capture_error_state (that could be
split into a separate patch if it wasn't so trivial).
v2: Now assuming i915_get_extra_instdone does the memset we can clean up the
code a bit (Jani)
v3: use ARRAY_SIZE as requested earlier by Jani (didn't change sizeof)
Updated commit msg
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
INSTDONE is used in many places, and it varies from generation to
generation. This provides a good reason for us to extract the logic to
read the relevant information.
The patch has no functional change. It's prep for some new stuff.
v2: move the memset inside of i915_get_extra_instdone (Jani)
v3,4: bugs caught by (Jani)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
The principal use for set-to-domain is for userspace to serialise
operations with a particular buffer, for example to maintain coherency
with a CPU map or to ratelimit its rendering by waiting on all previous
operations before continuing. As such we tend to hold the struct_mutex
for long periods during the synchronisation and so cause contention
issues with other users of the graphics device, even for independent
operations as memory management. An example is the contention between
compiz and X which causes jitter in the display and a drop in peak
throughput.
The ultimate solution would be a set of fine grained locks and lockless
operations, but an intermediate step is to first attempt the
synchronisation for set-to-domain without holding the mutex. This
introduces a number of race conditions, so we limit it use to the ioctl
periphery where we have no dependent state and can safely complete with
a locked synchronisation afterwards.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Move the wait-for-rendering logic around in the file so that we can
group it together with the subsequent variations. The general goal is to
have the lower level routines clustered together and then the higher
level logic building upon those low level routines that came before.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
If we have a 266MHz part we set core_freq to 0 in several spots
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
Another reference to raw_edid field of struct drm_display_info was added in
gma500 while the whole field was being removed, causing build
failure. Remove the hopefully last references to raw_edid.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@gmail.com>
This prevents the case of unbinding the object in order to process the
relocations through the GTT and then rebinding it only to then proceed
to use cpu relocations as the object is now in the CPU write domain. By
choosing to use cpu relocations up front, we can therefore avoid the
rebind penalty.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
As we wish to create specialised object constructions in the near
future that share the same basic GEM object struct, export the default
initializer.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
If the object has no backing shmemfs filp, then we obviously cannot
perform a truncation operation upon it.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Avoid stalling and waiting for the GPU by checking to see if there is
sufficient inactive space in the aperture for us to bind the buffer
prior to writing through the GTT. If there is inadequate space we will
have to stall waiting for the GPU, and incur overheads moving objects
about. Instead, only incur the clflush overhead on the target object by
writing through shmem.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes the following sparse warning:
drivers/gpu/drm/drm_fb_helper.c:239:6: warning:
symbol 'drm_fb_helper_force_kernel_mode' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Fixes the following sparse warning:
drivers/gpu/drm/drm_irq.c:1239:6:
warning: symbol 'drm_handle_vblank_events' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The I2C specific suspend and resume functions have been deprecated and
printing a warning on boot for over a year, dev_pm_ops should be used
instead so convert to that.
Also remove the suspend function since all it does is log.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This is set when setting DPMS on and off, but it isn't checked anywhere,
so just remove it.
Signed-off-by: Forest Bond <forest.bond@rapidrollout.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Forest Bond <forest.bond@rapidrollout.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Neither the drm core nor any of the drivers really need the raw_edid field
of struct drm_display_info for anything. Instead of being useful, it
creates confusion about who is responsible for freeing the memory it points
to and setting the field to NULL afterwards, leading to memory leaks and
dangling pointers.
Remove the raw_edid field, and fix drivers as necessary.
Reported-by: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The EDID returned by drm_get_edid() was never freed.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The EDID returned by drm_get_edid() was never freed.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
We should be making this call not praying that the values are right.
In addition as noted by Josiah Standing we should be calling this
for eDP as well.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
The private gem_create_mmap_offset() function is now implemented in the
DRM core as drm_gem_create_mmap_offset(). Use it and kill the private
copy.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
I don't know why the DP/eDP is affected by the clock gating. But the test
shows that it really fixes the DP/eDP clock issue during enabling DP/eDP.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
[Updated to only apply the workaround if the device has DP. We don't want
to do this on netbooks]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Introduce the eDP support into the driver.
This has been reworked a bit because kernel driver proper uses encoder/connectors
while the legacy Intel driver uses the old output stuff.
It also diverges on the backlight handling. The legacy Intel driver adds a panel
abstraction based upon the i915 one. It's only really used for backlight bits
and we have a perfectly good backlight abstraction which can extend instead.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
[ported to upstream driver, redid backlight abstraction]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Sascha Hauer