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74ebf294a1
linux/drivers/gpu/drm
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Todd Previte 74ebf294a1 drm/i915: Add a delay in Displayport AUX transactions for compliance testing 
The Displayport Link Layer Compliance Testing Specification 1.2 rev 1.1
specifies that repeated AUX transactions after a failure (no response /
invalid response) must have a minimum delay of 400us before the resend can
occur. Tests 4.2.1.1 and 4.2.1.2 are two tests that require this specifically.

Also, the check for DP_AUX_CH_CTL_TIME_OUT_ERROR has been moved out into a
separate case. This case just continues with the next iteration of the loop
as the HW has already waited the required amount of time.

V2:
- Changed udelay() to usleep_range()
V3:
- Removed extraneous check for timeout
- Updated comment to reflect this change
V4:
- Reformatted a comment
V5:
- Added separate check for HW timeout on AUX transactions. A message
  is logged upon detection of this case.
V6:
- Add continue statement to HW timeout detect case
- Remove the log message indicating a timeout has been
  detected (review feedback)
V7:
- Updated the commit message to remove verbage about the HW timeout
  case that is no longer valid.

Signed-off-by: Todd Previte <tprevite@gmail.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-04-16 13:31:46 +02:00
..
amd Merge tag 'drm-intel-next-2015-03-27-merge' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-04-01 08:21:46 +10:00
armada
ast
atmel-hlcdc drm: atmel-hlcdc: use appropriate enabled flag in suspend/resume 2015-03-16 16:10:42 +01:00
bochs drm/bochs: disable video before changing video mode 2015-04-01 08:28:15 +10:00
bridge drm/bridge: ptn3460: Fix sparse warnings 2015-03-24 11:16:48 +01:00
cirrus Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-02-16 15:48:00 -08:00
exynos Linux 4.0-rc7 2015-04-09 07:48:27 +10:00
gma500
i2c drm: adv7511: Refactor power management 2015-03-19 12:28:55 +02:00
i810
i915 drm/i915: Add a delay in Displayport AUX transactions for compliance testing 2015-04-16 13:31:46 +02:00
imx DRM: i.MX: parallel display: Support probe deferral for finding DRM panel 2015-02-23 17:19:25 +01:00
mga
mgag200
msm drm/msm/mdp5: Enable DSI connector in msm drm driver 2015-04-01 19:29:38 -04:00
nouveau drm/nouveau/bios: fix i2c table parsing for dcb 4.1 2015-03-17 09:44:23 +10:00
omapdrm drm/omap: tiler: add hibernation callback 2015-03-24 14:09:43 +02:00
panel drm/panel: Add support for Ampire AM-800480R3TMQW-A1H 800x480 7" panel 2015-04-02 19:04:15 +02:00
qxl
r128
radeon Linux 4.0-rc7 2015-04-09 07:48:27 +10:00
rcar-du drm: rcar-du: Enable the atomic updates API 2015-03-19 12:00:22 +02:00
rockchip drm/rockchip: vop: add vop power domain support 2015-04-03 14:23:36 +08:00
savage
shmobile drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS 2015-02-03 11:12:37 +10:00
sis
sti drm: sti: convert driver to atomic modeset 2015-03-19 13:35:16 +01:00
tdfx
tegra drm/tegra: Changes for v4.1-rc1 2015-04-08 11:13:06 +10:00
tilcdc drm: Kconfig: Let all DRM_GEM_CMA_HELPER related macros depend on HAVE_DMA_ATTRS 2015-02-03 11:12:37 +10:00
ttm drm/ttm: device address space != CPU address space 2015-03-05 09:04:39 +10:00
udl drm/udl: properly set active_16 flag in udl_crtc_page_flip(). (v2) 2015-01-31 10:12:23 +10:00
vgem drm/vgem: implement virtual GEM 2015-04-02 09:21:48 +10:00
via
vmwgfx Merge tag 'topic/drm-misc-2015-03-31' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-04-01 08:23:25 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm/tegra: Changes for v4.1-rc1 2015-04-08 11:13:06 +10:00
drm_atomic.c drm/atomic: Don't try to free a NULL state 2015-03-30 16:52:09 +02:00
drm_auth.c
drm_bridge.c drm: Silence sparse warnings 2015-03-13 17:37:35 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c drm: crtc_helper: Update hwmode before mode_set call 2015-03-23 16:22:30 +01:00
drm_crtc_internal.h
drm_crtc.c Merge branch 'topic/bxt-stage1' into drm-intel-next-queued 2015-04-14 14:00:56 +02:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c drm/dp: Print the number of bytes processed for aux nacks 2015-03-23 16:22:29 +01:00
drm_dp_mst_topology.c Merge tag 'drm-intel-next-2015-03-13-merge' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-03-24 11:12:20 +10:00
drm_drv.c drm: %pF is only for function pointers 2015-03-13 10:17:38 +01:00
drm_edid_load.c drm/edid: set ELD for firmware and debugfs override EDIDs 2015-03-27 13:27:04 +02:00
drm_edid.c
drm_encoder_slave.c
drm_fb_cma_helper.c drm/cma: use correct fb width/height 2015-03-11 22:08:07 +01:00
drm_fb_helper.c drm: fb_helper: Simplify exit condition 2015-03-23 16:22:29 +01:00
drm_flip_work.c
drm_fops.c
drm_gem_cma_helper.c
drm_gem.c
drm_global.c
drm_hashtab.c
drm_info.c drm: Silence sparse warnings 2015-03-13 17:37:35 +01:00
drm_internal.h
drm_ioc32.c drm: Silence sparse warnings 2015-03-13 17:37:35 +01:00
drm_ioctl.c drm: line wrap DRM_IOCTL_DEF* macros 2015-03-31 09:18:40 +02:00
drm_irq.c Merge tag 'drm-intel-next-2015-02-27' of git://anongit.freedesktop.org/drm-intel into drm-next 2015-03-09 19:41:15 +10:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/mipi-dsi: Avoid potential NULL pointer dereference 2015-01-28 08:45:37 +01:00
drm_mm.c [PATCH] drm/mm: Fix support 4 GiB and larger ranges 2015-03-16 06:28:50 +10:00
drm_modes.c drm: mode: Allow NULL modes for equality check 2015-03-23 16:22:30 +01:00
drm_modeset_lock.c
drm_of.c
drm_panel.c
drm_pci.c drm: Silence sparse warnings 2015-03-13 17:37:35 +01:00
drm_plane_helper.c drm/plane-helper: Fixup mismerge 2015-03-11 16:43:40 +01:00
drm_platform.c
drm_prime.c
drm_probe_helper.c drm/edid: set ELD for firmware and debugfs override EDIDs 2015-03-27 13:27:04 +02:00
drm_rect.c
drm_scatter.c
drm_sysfs.c drm: Lighten sysfs connector 'status' 2015-03-10 09:59:36 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c drm: Silence sparse warnings 2015-03-13 17:37:35 +01:00
drm_vma_manager.c mm: remove rest usage of VM_NONLINEAR and pte_file() 2015-02-10 14:30:31 -08:00
Kconfig drm/vgem: implement virtual GEM 2015-04-02 09:21:48 +10:00
Makefile drm/vgem: implement virtual GEM 2015-04-02 09:21:48 +10:00