linux/drivers/gpu/drm
Paulo Zanoni aa0b3b5bb8 drm/i915: don't schedule force_wake_timer at gen6_read
So far force_wake_timer was only used by gen6_gt_force_wake_put. Since
we always had balanced gen6_gt_force_wake_get/put calls, we could
guarantee balanced calls to intel_runtime_pm_get/put.

Commit 8232644ccf, "drm/i915: Convert
the forcewake worker into a timer func" started scheduling the
force_wake_timer at gen6_read, which resulted in an unbalanced
runtime_pm refcount.

So this commit just reverts to the old behavior until we can find a
proper way to used delayed force_wake from the register read/write
macros without leaving the runtime_pm refcounts unbalanced and without
runtime suspending the driver while forcewake is active.

Testcase: igt/pm_pc8/rte
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76544
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-04-01 22:36:17 +02:00
..
armada Merge branch 'drm-armada-fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-cubox into drm-fixes 2014-03-07 09:04:32 +10:00
ast drm: init TTM dev_mapping in ttm_bo_device_init() 2014-03-16 12:23:42 +01:00
bochs Merge branch 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux into drm-next 2014-03-18 19:17:02 +10:00
cirrus drm: init TTM dev_mapping in ttm_bo_device_init() 2014-03-16 12:23:42 +01:00
exynos drm/exynos: Fix (more) freeing issues in exynos_drm_drv.c 2014-03-20 11:42:24 +09:00
gma500 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-01-29 20:49:12 -08:00
i2c drm/i2c: tda998x: always use the same device for all kernel messages 2014-02-14 20:11:12 +00:00
i810 drm: kill DRIVER_REQUIRE_AGP 2013-12-18 11:17:53 +10:00
i915 drm/i915: don't schedule force_wake_timer at gen6_read 2014-04-01 22:36:17 +02:00
mga drivers: gpu: Include appropriate header file in mga_ioc32.c 2014-01-14 12:59:24 +10:00
mgag200 drm: init TTM dev_mapping in ttm_bo_device_init() 2014-03-16 12:23:42 +01:00
msm Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2014-02-11 12:56:17 +10:00
nouveau Linux 3.14 2014-03-31 10:45:15 +02:00
omapdrm drm: use anon-inode instead of relying on cdevs 2014-03-16 12:23:33 +01:00
panel drm/panel: update EDID BLOB in panel_simple_get_modes() 2014-01-14 16:02:02 +01:00
qxl drm: init TTM dev_mapping in ttm_bo_device_init() 2014-03-16 12:23:42 +01:00
r128 drivers: gpu: Include appropriate header file in r128_ioc32.c 2014-01-14 13:05:37 +10:00
radeon Linux 3.14 2014-03-31 10:45:15 +02:00
rcar-du Merge branch 'drm/next/du' of git://linuxtv.org/pinchartl/fbdev into drm-next 2013-12-23 10:42:36 +10:00
savage drm: Kill DRM_*MEMORYBARRIER 2013-12-18 11:35:21 +10:00
shmobile drm/shmob: call drm_put_dev directly from ->remove hook 2013-12-18 11:05:46 +10:00
sis drivers: gpu: Mark function as static in sis_drv.c 2014-01-14 13:04:33 +10:00
tdfx
tegra Linux 3.14-rc7 2014-03-18 19:12:31 +10:00
tilcdc drm: store the gem vma offset manager in a typed pointer 2014-01-14 12:38:32 +10:00
ttm Merge branch 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux into drm-next 2014-03-18 19:17:02 +10:00
udl Linux 3.14 2014-03-31 10:45:15 +02:00
via drivers: gpu: Mark function as static in via_drv.c 2014-01-14 13:05:00 +10:00
vmwgfx Merge branch 'drm-next' of git://people.freedesktop.org/~dvdhrm/linux into drm-next 2014-03-18 19:17:02 +10:00
ati_pcigart.c
drm_agpsupport.c drm: rip out DRM_AGP_MEM and DRM_AGP_KERN 2013-12-18 11:32:55 +10:00
drm_auth.c
drm_buffer.c drm: Kill DRM_COPY_(TO|FROM)_USER 2013-12-18 11:35:01 +10:00
drm_bufs.c drm: rip out drm_core_has_AGP 2013-12-18 11:20:04 +10:00
drm_cache.c
drm_context.c
drm_crtc_helper.c drm: kerneldoc polish for drm_crtc_helper.c 2014-03-13 12:48:48 +01:00
drm_crtc_internal.h drm: move drm_mode related functions into drm_modes.c 2014-03-13 12:48:40 +01:00
drm_crtc.c Merge branch 'drm-docs' of ssh://people.freedesktop.org/~danvet/drm into drm-next 2014-03-18 19:09:10 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c drm/dp: let drivers specify the name of the I2C-over-AUX adapter 2014-03-18 10:53:14 +01:00
drm_drv.c drm: remove redundant minor->device field 2014-03-16 12:25:19 +01:00
drm_edid_load.c drm/edid: Make edid_load() return a void * 2013-12-18 10:42:13 +10:00
drm_edid.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_flip_work.c
drm_fops.c Merge branch 'drm-minor' into drm-next 2014-03-16 13:13:51 +01:00
drm_gem_cma_helper.c drm/cma: remove to make sg_table when gem cma is created 2014-03-18 19:20:25 +10:00
drm_gem.c Merge branch 'drm-docs' of ssh://people.freedesktop.org/~danvet/drm into drm-next 2014-03-18 19:09:10 +10:00
drm_global.c
drm_hashtab.c
drm_info.c drm: remove dev->vma_count 2013-12-18 11:43:29 +10:00
drm_ioc32.c
drm_ioctl.c drm: add DRM_CAPs for cursor size 2014-02-18 13:41:01 -05:00
drm_irq.c drm/radeon: Move the early vblank IRQ fixup to radeon_get_crtc_scanoutpos() 2014-01-20 12:21:35 +02:00
drm_lock.c
drm_memory.c drm: rip out DRM_AGP_MEM and DRM_AGP_KERN 2013-12-18 11:32:55 +10:00
drm_mipi_dsi.c
drm_mm.c drm/doc: Add function reference documentation for drm_mm.c 2014-03-13 12:48:37 +01:00
drm_modes.c drm: polish function kerneldoc for drm_modes.[hc] 2014-03-13 12:48:44 +01:00
drm_panel.c drm: Add panel support 2013-12-17 18:09:46 +01:00
drm_pci.c Merge branch 'topic/core-stuff' of git://git.freedesktop.org/git/drm-intel into drm-next 2014-03-18 19:23:22 +10:00
drm_platform.c drm: provide device-refcount 2014-03-16 12:25:17 +01:00
drm_prime.c drm/doc: Add PRIME function references 2014-03-13 12:48:34 +01:00
drm_rect.c
drm_scatter.c
drm_stub.c Merge branch 'drm-minor' into drm-next 2014-03-16 13:13:51 +01:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c drm: provide device-refcount 2014-03-16 12:25:17 +01:00
drm_vm.c drm: remove dev->vma_count 2013-12-18 11:43:29 +10:00
drm_vma_manager.c
Kconfig drm/bochs: new driver 2013-12-23 11:02:39 +10:00
Makefile drm/bochs: new driver 2013-12-23 11:02:39 +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