Mika Kuoppala 9b18572e83 drm/i915/gen9: Verify and enforce dc6 state writes ... It has been observed that sometimes disabling the dc6 fails and dc6 state pops back up, brief moment after disabling. This has to be dmc save/restore timing issue or other bug in the way dc states are handled. Try to work around this issue as we don't have firmware fix yet available. Verify that the value we wrote for the dmc sticks, and also enforce it by rewriting it, if it didn't. v2: Zero rereads on rewrite for extra paranoia (Imre) Testcase: kms_flip/basic-flip-vs-dpms References: https://bugs.freedesktop.org/show_bug.cgi?id=93768 Cc: Patrik Jakobsson <patrik.jakobsson@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1455811089-27884-1-git-send-email-mika.kuoppala@intel.com (cherry picked from commit 779cb5d3dd) Signed-off-by: Jani Nikula <jani.nikula@intel.com>		2016-02-22 18:37:43 +02:00
..
amd	drm/amdgpu: use post-decrement in error handling	2016-02-16 10:05:38 -05:00
armada	Merge branch 'drm-armada-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next	2015-12-23 09:19:58 +10:00
ast	drm: Pass 'name' to drm_encoder_init()	2015-12-11 09:13:20 +01:00
atmel-hlcdc	drm: use dev_name as default unique name in drm_dev_alloc()	2015-12-15 13:56:06 +01:00
bochs	drm/bochs: Constify function pointer structs	2015-12-15 13:42:36 +01:00
bridge	Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-01-18 07:01:16 +10:00
cirrus	drm/cirrus: Constify function pointer structs	2015-12-15 13:43:59 +01:00
etnaviv	drm/etnaviv: call correct function when trying to vmap a DMABUF	2016-01-26 18:54:01 +01:00
exynos	drm/exynos/decon: fix disable clocks order	2016-02-15 23:25:23 +09:00
fsl-dcu	drm: use dev_name as default unique name in drm_dev_alloc()	2015-12-15 13:56:06 +01:00
gma500	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2016-01-17 13:40:25 -08:00
i2c	drm: adv7511: it's HPD, not HDP	2016-02-02 15:37:55 +01:00
i810
i915	drm/i915/gen9: Verify and enforce dc6 state writes	2016-02-22 18:37:43 +02:00
imx	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
mga
mgag200	asm-generic changes for 4.5	2016-01-20 17:30:20 -08:00
msm	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2016-01-17 13:40:25 -08:00
nouveau	drm/nouveau: use post-decrement in error handling	2016-02-19 13:36:05 +10:00
omapdrm	fbdev changes for 4.5	2016-01-18 11:58:31 -08:00
panel	drm/panel: simple: Add QiaoDian qd43003c0-40	2015-12-16 18:15:26 +01:00
qxl	drm/qxl: fix erroneous return value	2016-02-17 15:39:35 +10:00
r128
radeon	Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-fixes	2016-02-19 12:49:03 +10:00
rcar-du	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
rockchip	drm/rockchip: respect CONFIG_DRM_FBDEV_EMULATION	2016-01-22 08:45:31 +08:00
savage
shmobile	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
sis
sti	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
tdfx
tegra	Merge tag 'topic/drm-misc-2016-01-17' of git://anongit.freedesktop.org/drm-intel into drm-next	2016-01-18 07:01:16 +10:00
tilcdc	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
ttm	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2016-01-17 13:40:25 -08:00
udl	drm/udl: Constify function pointer structs	2015-12-15 13:48:54 +01:00
vc4	drm/vc4: Use runtime PM to power cycle the device when the GPU hangs.	2016-02-16 12:21:01 -08:00
vgem
via
virtio	virtio: barrier rework+fixes	2016-01-18 16:44:24 -08:00
vmwgfx	drm/vmwgfx: respect 'nomodeset'	2016-01-29 10:03:44 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c	drm/atomic: Allow for holes in connector state, v2.	2016-02-19 13:24:03 +10:00
drm_atomic.c	drm/atomic: Allow for holes in connector state, v2.	2016-02-19 13:24:03 +10:00
drm_auth.c
drm_bridge.c	drm/bridge: Improve kerneldoc	2015-12-08 16:07:53 +01:00
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c	drm: Add crtc->name and use it in debug messages	2015-12-11 09:13:48 +01:00
drm_crtc_internal.h
drm_crtc.c	drm/atomic: Allow for holes in connector state, v2.	2016-02-19 13:24:03 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_dp_mst_topology.c	Revert "drm/dp/mst: change MST detection scheme"	2016-02-17 14:07:48 +10:00
drm_drv.c	drm: move MODULE_PARM_DESC to other file	2016-01-08 15:32:29 +01:00
drm_edid_load.c
drm_edid.c	drm/edid: index CEA/HDMI mode tables using the VIC	2016-01-08 15:30:28 +01:00
drm_encoder_slave.c	drm: Constify drm_encoder_slave_funcs	2015-12-15 13:41:17 +01:00
drm_fb_cma_helper.c	drm/fb_cma_helper: Remove implicit call to disable_unused_functions	2016-01-15 11:16:15 +01:00
drm_fb_helper.c	drm/fb-helper: Use proper plane mask for fb cleanup	2015-12-21 09:54:49 +01:00
drm_flip_work.c
drm_fops.c	Linux 4.4-rc4	2015-12-08 11:04:26 +10:00
drm_gem_cma_helper.c	drm: Use the driver's gem_object_free function from CMA helpers.	2015-12-15 10:23:44 +01:00
drm_gem.c	drm: Remove opencoded drm_gem_object_release_handle()	2016-01-05 16:23:09 +01:00
drm_global.c
drm_hashtab.c	tree wide: use kvfree() than conditional kfree()/vfree()	2016-01-22 17:02:18 -08:00
drm_info.c
drm_internal.h
drm_ioc32.c
drm_ioctl.c
drm_irq.c	drm: Fix treatment of drm_vblank_offdelay in drm_vblank_on() (v2)	2016-02-17 14:19:00 +10:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c
drm_modes.c	drm/doc: Convert to markdown	2015-12-15 10:22:26 +01:00
drm_modeset_lock.c	drm/doc: Convert to markdown	2015-12-15 10:22:26 +01:00
drm_of.c
drm_panel.c
drm_pci.c	drm: add drm_pcie_get_max_link_width helper (v2)	2015-12-21 16:42:31 -05:00
drm_plane_helper.c	drm: Pass 'name' to drm_universal_plane_init()	2015-12-11 09:13:10 +01:00
drm_platform.c
drm_prime.c	drm/doc: Convert to markdown	2015-12-15 10:22:26 +01:00
drm_probe_helper.c	Merge branch 'for-linus' into for-next	2015-12-23 08:33:34 +01:00
drm_rect.c
drm_scatter.c
drm_sysfs.c	drm/sysfs: use kobj_to_dev()	2016-01-13 16:43:07 +01:00
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig	dma-mapping: always provide the dma_map_ops based implementation	2016-01-20 17:09:18 -08:00
Makefile	Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2016-01-20 09:45:43 -08:00