linux_dsm_epyc7002/drivers/gpu/drm
Egbert Eich ac4c16c56c drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4)
We disable hoptplug detection when we encounter a hotplug event
storm. Still hotplug detection is required on some outputs (like
Display Port). The interrupt storm may be only temporary (on certain
Dell Laptops for instance it happens at certain charging states of
the system). Thus we enable it after a certain grace period (2 minutes).
Should the interrupt storm persist it will be detected immediately
and it will be disabled again.

v2: Reordered drm_i915_private: moved hotplug_reenable_timer to hpd state tracker.
v3: Clarified loop start value,
    Removed superfluous test for Ivybridge and Haswell,
    Restructured loop to avoid deep nesting (all suggested by Ville Syrjälä)
v4: Fixed two bugs pointed out by Jani Nikula.

Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-04-18 09:43:30 +02:00
..
ast Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
cirrus Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2013-02-25 16:46:44 -08:00
exynos drm/exynos: Check g2d cmd list for g2d restrictions 2013-03-20 19:09:11 +09:00
gma500 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
i2c drm/i2c: nxp-tda998x (v3) 2013-02-19 17:57:44 -05:00
i810
i915 drm/i915: Add Reenable Timer to turn Hotplug Detection back on (v4) 2013-04-18 09:43:30 +02:00
mga
mgag200 drm/mgag200: Bug fix: Modified pll algorithm for EH project 2013-03-21 10:16:58 +10:00
nouveau drm/nv50/kms: prevent lockdep false-positive in page flipping path 2013-03-19 15:26:38 +10:00
omapdrm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
r128
radeon drm/radeon: add support for Richland APUs 2013-03-15 18:47:19 -04:00
savage
shmobile
sis drm/sis: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
tdfx
tegra drm/tegra: drop "select DRM_HDMI" 2013-03-08 08:36:01 +10:00
tilcdc drm/tilcdc: only build on arm 2013-02-26 09:54:48 +10:00
ttm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
udl Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
via drm/via: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
vmwgfx drm/vmwgfx: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c
drm_cache.c lib/scatterlist: sg_page_iter: support sg lists w/o backing pages 2013-03-27 17:13:44 +01:00
drm_context.c drm: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
drm_crtc_helper.c
drm_crtc.c drm: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_drv.c drm: don't use idr_remove_all() 2013-02-27 19:10:13 -08:00
drm_edid_load.c
drm_edid.c KMS: fix EDID detailed timing frame rate 2013-03-23 10:46:10 -07:00
drm_encoder_slave.c drm: i2c encoder helper wrappers 2013-02-17 17:55:42 -05:00
drm_fb_cma_helper.c Merge branch 'tilcdc-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2013-02-21 09:31:47 +10:00
drm_fb_helper.c drm: add initial_config function to fb helper 2013-03-26 21:32:53 +01:00
drm_fops.c
drm_gem_cma_helper.c drm/cma: add debugfs helpers 2013-02-17 17:55:42 -05:00
drm_gem.c drm: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
drm_global.c
drm_hashtab.c hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
drm_info.c
drm_ioc32.c
drm_ioctl.c
drm_irq.c drm: small fix in drm_send_vblank_event() 2013-02-17 17:55:42 -05:00
drm_lock.c
drm_memory.c
drm_mm.c
drm_modes.c
drm_pci.c drm/pci: define drm_pcie_get_speed_cap_mask() only when CONFIG_PCI=y 2013-02-15 10:15:19 +10:00
drm_platform.c
drm_prime.c drm: modify pages_to_sg prime helper to create optimized SG table 2013-03-23 12:17:57 +01:00
drm_proc.c
drm_scatter.c
drm_stub.c drm: convert to idr_alloc() 2013-02-27 19:10:15 -08:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c drm/usb: bind driver to correct device 2013-02-07 12:37:41 +10:00
drm_vm.c
Kconfig drm: Add HDMI infoframe helpers 2013-02-22 08:20:10 +01:00
Makefile Merge branch 'tilcdc-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2013-02-21 09:31:47 +10:00
README.drm

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html