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ca88479c1c3b7b1a9f94320745f5331e1de77f80
linux-apfs/drivers/gpu/drm
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Keith Packard ca88479c1c drm/i915: Treat pre-gen4 backlight duty cycle value consistently 
For i945 and earlier chips, the backlight frequency value had the low
bit (of 16) fixed to zero. The Pineview code path handled this by just
exposing the backlight range as 15 bits while other chips had the
backlight range limited to 0 .. 0xfffe.

This patch makes everyone take the pineview code path, providing 15
bits of backlight duty cycle range which seems more than sufficient to
me.

Daniel Mack reported that writing 1 to bit 0 of the duty cycle
register was causing problems on his Samsung X20 notebook, even when
the duty cycle value was less than the maximum backlight value. (He
tried a value of 29749 with max_brightness of 29750). This patch never
writes a '1' to that bit.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reported-and-tested-by: Daniel Mack <zonque@gmail.com>
Cc: stable@kernel.org
2011-11-23 13:07:13 -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: Treat pre-gen4 backlight duty cycle value consistently
2011-11-23 13:07:13 -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_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_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
…
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_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_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
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