In the event that any one of the DAC analog outputs (R,G,B) were driven
at full-scale (white video) or some analog level close to full-scale
voltage, and if the video cable were then disconnected, the analog video
voltage level would exceed the maximum electrical overstress limit of the
native (thin-oxide) transistors thus causing a long-term reliability concern.
The electrical overstress condition occurs in this particular case.
This patch address the IGD EOS (electrical overstress condition) issue.
When the EOS interrupt occurs, OS should disable DAC and then disable EOS,
then the normal hotplug operation follows.
TODO: it appears the normal unplug interrupt is missed as reported by Li Peng,
need more checks here.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Use VBT information to determine which DDC bus to use for CRTDCC.
Fall back to GPIOA if VBT info is not available.
Signed-off-by: David Müller <d.mueller@elsoft.ch>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Tested on: 855 (David), and 945GM, 965GM, GM45, and G45 (anholt)
Based on Bspec each encoder has different sharing pipe property,
i.e. Integrated or SDVO TV both will occupy one pipe exclusively,
and sdvo-non-tv and crt are allowed to share one. The patch moves
sharing judgment into differnet output functions, and sets the right
clone bit.
This fixes both HDMI outputs choosing the same pipe.
https://bugs.freedesktop.org/show_bug.cgi?id=22247
Signed-off-by: Ma Ling <ling.ma@intel.com>
Reviewed-by : Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Check FORCE_DETECT bit to be clear for the finish
of hotplug detect process. Also check possible mono
monitor which should also be marked as connected.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Usually crt mainly get modes via GPIOA ports.
However on G4X platform we need to probe possible
ports for DVI-I, which could be wired to GPIOD,
then fetch our desired EDID, i.e on DG45ID platform
we successfully fetch EDID by GPIOD port.
It fixed freedesktop.org bug #21084
Signed-off-by: Ma Ling <ling.ma@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
* 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (50 commits)
drm: include kernel list header file in hashtab header
drm: Export hash table functionality.
drm: Split out the mm declarations in a separate header. Add atomic operations.
drm/radeon: add support for RV790.
drm/radeon: add rv740 drm support.
drm_calloc_large: check right size, check integer overflow, use GFP_ZERO
drm: Eliminate magic I2C frobbing when reading EDID
drm/i915: duplicate desired mode for use by fbcon.
drm/via: vfree() no need checking before calling it
drm: Replace DRM_DEBUG with DRM_DEBUG_DRIVER in i915 driver
drm: Replace DRM_DEBUG with DRM_DEBUG_MODE in drm_mode
drm/i915: Replace DRM_DEBUG with DRM_DEBUG_KMS in intel_sdvo
drm/i915: replace DRM_DEBUG with DRM_DEBUG_KMS in intel_lvds
drm: add separate drm debugging levels
radeon: remove _DRM_DRIVER from the preadded sarea map
drm: don't associate _DRM_DRIVER maps with a master
drm: simplify kcalloc() call to kzalloc().
intelfb: fix spelling of "CLOCK"
drm: fix LOCK_TEST_WITH_RETURN macro
drm/i915: Hook connector to encoder during load detection (fixes tv/vga detect)
...
This adds kernel mode setting on IGDNG with VGA output support.
Note that suspend/resume doesn't work yet.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Making the drm_crtc.c code recognize the DPMS property and invoke the
connector->dpms function doesn't remove any capability from the driver while
reducing code duplication.
That just highlighted the problem with the existing DPMS functions which
could turn off the connector, but failed to turn off any relevant crtcs. The
new drm_helper_connector_dpms function manages all of that, using the
drm_helper-specific crtc and encoder dpms functions, automatically computing
the appropriate DPMS level for each object in the system.
This fixes the current troubles in the i915 driver which left PLLs, pipes
and planes running while in DPMS_OFF mode or even while they were unused.
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Two approaches for VGA detections: hot plug detection for 945G onwards
and load pipe detection for Pre-945G. Load pipe detection will get one free
pipe, set border color as red and blue, then check CRT status by
swf register. This is a sync-up with the 2D driver.
Signed-off-by: Ma Ling <ling.ma@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Although spec say CRT_HOTPLUG_ACTIVATION_PERIOD_64 is only useful for
mobile platform, it is also required to detect vga on G4x desktops correctly.
Tested on G45/G43/Q45 platforms with no regressions.
It fixed freedesktop.org bug #21120 and part of bug #21210
Signed-off-by: Ma Ling <ling.ma@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Add VGA port hotplug detection to the i915 driver. When KMS is enabled,
plugging in or removing a VGA cable from the VGA connector will
generate a uevent, which indicates to userspace that it should re-probe
outputs on this device (to determine modes, etc.).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[anholt: dropped extra PORT_HOTPLUG_STAT clear with ack from jbarnes]
Signed-off-by: Eric Anholt <eric@anholt.net>
This covers:
Use long crt hotplug activation time on GM45.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This covers:
Limit CRT DAC speed better.
and also clears the border color in case it's set to some garbage, which would
fix ugly outlines in the blank regions of the CRT.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
[anholt: replaced *drm_dev with *dev]
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit adds i915 driver support for the DRM mode setting APIs.
Currently, VGA, LVDS, SDVO DVI & VGA, TV and DVO LVDS outputs are
supported. HDMI, DisplayPort and additional SDVO output support will
follow.
Support for the mode setting code is controlled by the new 'modeset'
module option. A new config option, CONFIG_DRM_I915_KMS controls the
default behavior, and whether a PCI ID list is built into the module for
use by user level module utilities.
Note that if mode setting is enabled, user level drivers that access
display registers directly or that don't use the kernel graphics memory
manager will likely corrupt kernel graphics memory, disrupt output
configuration (possibly leading to hangs and/or blank displays), and
prevent panic/oops messages from appearing. So use caution when
enabling this code; be sure your user level code supports the new
interfaces.
A new SysRq key, 'g', provides emergency support for switching back to
the kernel's framebuffer console; which is useful for testing.
Co-authors: Dave Airlie <airlied@linux.ie>, Hong Liu <hong.liu@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
