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3b5c78a35c
linux/drivers/gpu/drm
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Adam Jackson 3b5c78a35c drm/i915/dp: Dither down to 6bpc if it makes the mode fit 
Some active adaptors (VGA usually) only have two lanes at 2.7GHz.
That's a maximum pixel clock of 144MHz at 8bpc, but 192MHz at 6bpc.

Fixes Asus UX31 panel being black at startup due to no valid modes since
dc22ee6fc1.

v2: Rebased to current code, resulting in the fix applying to EDP panels as
    well.  Also changed from spatio-temporal to just spatial dithering on
    pre-ironlake, to be conssitent (and less visual flicker)

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Tested-by: Eric Anholt <eric@anholt.net>
Tested-by: Dirk Hohndel <hohndel@infradead.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
2011-12-16 08:49:59 -08:00
..
exynos drm/exynos: fixed build warnings and comments. 2011-10-18 10:01:19 +01:00
i2c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
i810 gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
i915 drm/i915/dp: Dither down to 6bpc if it makes the mode fit 2011-12-16 08:49:59 -08:00
mga gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
nouveau drm/nouveau: Fix bandwidth calculation for DisplayPort 2011-11-10 09:03:05 +10:00
r128 gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
radeon drm/radeon/kms/atom: unify i2c gpio table handling 2011-11-22 20:10:28 +00:00
savage gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
sis gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
tdfx gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
ttm ttm: Don't return the bo reserved on error path 2011-11-22 20:06:21 +00:00
via gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
vmwgfx vmwgfx: Only allow 64x64 cursors 2011-11-11 10:58:26 +00:00
ati_pcigart.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_agpsupport.c drm: kill drm_agp_chipset_flush 2010-11-23 20:14:44 +00:00
drm_auth.c
drm_buffer.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_bufs.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_cache.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_context.c
drm_crtc_helper.c drm: try to restore previous CRTC config if mode set fails 2011-11-11 11:07:36 +00:00
drm_crtc.c drm: integer overflow in drm_mode_dirtyfb_ioctl() 2011-11-23 08:59:28 +00:00
drm_debugfs.c drm: serialize access to list of debugfs files 2011-11-11 11:05:19 +00:00
drm_dma.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_dp_i2c_helper.c
drm_drv.c drm: do not sleep on vblank while holding a mutex 2011-11-11 11:12:47 +00:00
drm_edid_modes.h drm: Mark constant arrays of drm_display_mode const 2011-02-23 11:13:11 +10:00
drm_edid.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_encoder_slave.c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
drm_fb_helper.c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
drm_fops.c gpu: add module.h to drivers/gpu files as required. 2011-10-31 19:32:03 -04:00
drm_gem.c drm/gem: add functions for mmap offset creation 2011-08-30 11:06:06 +01:00
drm_global.c
drm_hashtab.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_info.c Merge remote branch 'intel/drm-intel-next' of ../drm-next into drm-core-next 2011-03-14 14:15:13 +10:00
drm_ioc32.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_ioctl.c drm/vblank: update recently added vbl interface to be more future proof. 2011-03-24 21:28:46 +10:00
drm_irq.c drm: Remove utterly bogus preempt_disable() sections 2011-11-14 09:28:50 +00:00
drm_lock.c
drm_memory.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_mm.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_modes.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_pci.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_platform.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_proc.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_scatter.c drivers: use kzalloc/kcalloc instead of 'kmalloc+memset', where possible 2011-07-25 20:57:13 -07:00
drm_sman.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_stub.c drm: Create and use drm_err 2011-04-28 14:53:02 +10:00
drm_sysfs.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_trace_points.c
drm_trace.h
drm_usb.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
drm_vm.c gpu: Add export.h as required to drivers/gpu files. 2011-10-31 19:32:03 -04:00
Kconfig drm: fix kconfig unmet dependency warning 2011-11-11 11:23:09 +00:00
Makefile DRM: add DRM Driver for Samsung SoC EXYNOS4210. 2011-10-05 10:27:31 +01:00
README.drm

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