Imre Deak ed69cd4068 drm/i915/glk, cnl: Implement WaDisableScalarClockGating ... On GLK and CNL enabling a pipe with its pipe scaler enabled will result in a FIFO underrun. This happens only once after driver loading or system/runtime resume, more specifically after power well 1 gets enabled; subsequent modesets seem to be free of underruns. The BSpec workaround for this is to disable the pipe scaler clock gating for the duration of modeset. Based on my tests disabling clock gating must be done before enabling pipe scaling and we can re-enable it after the pipe is enabled and one vblank has passed. For consistency I also checked if plane scaling would cause the same problem, but that doesn't seem to trigger this problem. The patch is based on an earlier version from Ander. v2 (Rodrigo): - Set also CLKGATE_DIS_PSL bits 8 and 9. - Add also the BSpec workaround ID. Cc: Ander Conselvan de Oliveira <conselvan2@gmail.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100302 Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20171002075557.32615-1-imre.deak@intel.com		2017-10-03 12:09:16 +03:00
..
amd	Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-09-28 08:37:02 +10:00
arc	drm/arc: Use drm_gem_fb_create()	2017-09-02 14:23:06 +02:00
arm	drm/arm/mali: Use drm_gem_fb_create()	2017-08-27 19:29:46 +02:00
armada	drm/armada: Use correct path to trace include	2017-09-05 11:11:20 +02:00
ast	Merge tag 'drm-misc-next-2017-08-16' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-08-17 07:33:41 +10:00
atmel-hlcdc	drm/atmel-hlcdc: Use drm_gem_fb_create()	2017-08-27 19:30:15 +02:00
bochs	drm/bochs: Use the drm_driver.dumb_destroy default	2017-08-16 20:18:55 +02:00
bridge	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
cirrus	drm/cirrus: Use the drm_driver.dumb_destroy default	2017-08-16 20:14:22 +02:00
etnaviv	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
exynos	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
fsl-dcu	drm: Nuke drm_atomic_helper_connector_dpms	2017-08-08 14:48:48 +02:00
gma500	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
hisilicon	drm: kirin: Add mode_valid logic to avoid mode clocks we can't generate	2017-08-29 05:20:35 +10:00
i2c	drm: i2c: tda998x: constify i2c_device_id	2017-08-22 08:33:44 +02:00
i810	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
i915	drm/i915/glk, cnl: Implement WaDisableScalarClockGating	2017-10-03 12:09:16 +03:00
imx	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
lib	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
mediatek	drm/mediatek: hdmi: clean up drm_bridge_add call	2017-08-21 08:49:24 +05:30
meson	drm/meson: Use .dumb_map_offset and .dumb_destroy defaults	2017-08-16 20:11:43 +02:00
mga	Merge airlied/drm-next into drm-misc-next	2017-07-26 13:43:33 +02:00
mgag200	drm/mgag200: Use the drm_driver.dumb_destroy default	2017-08-16 20:18:22 +02:00
msm	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
mxsfb	drm/mxsfb: Use .dumb_map_offset and .dumb_destroy defaults	2017-08-16 20:12:19 +02:00
nouveau	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
omapdrm	drm/omap: work-around for omap3 display enable	2017-08-23 12:22:12 +03:00
panel	drm/panel: Add driver for Seiko 43WVF1G panel	2017-08-18 17:10:45 +02:00
pl111	drm/pl111: Add handling of Versatile platforms	2017-09-10 23:58:42 +02:00
qxl	drm/qxl: Use the drm_driver.dumb_destroy default	2017-08-16 20:15:38 +02:00
r128	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
radeon	Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-09-28 08:37:02 +10:00
rcar-du	Merge tag 'drm-misc-next-2017-08-08' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-08-10 10:47:33 +10:00
rockchip	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
savage	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
selftests	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
shmobile	drm/shmobile: Use .dumb_map_offset and .dumb_destroy defaults	2017-07-29 13:57:33 +02:00
sis	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
sti	drm/sti: Use drm_gem_fb_create()	2017-08-27 19:30:49 +02:00
stm	drm/stm: fix warning about multiplication in condition	2017-09-08 10:29:11 +02:00
sun4i	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
tdfx	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
tegra	drm/tegra: Changes for v4.14-rc1	2017-08-21 17:37:33 +10:00
tilcdc	drm/tilcdc: Use drm_gem_fb_create()	2017-09-09 18:00:58 +02:00
tinydrm	drm/tinydrm: Drop driver registered message	2017-09-16 14:07:59 +02:00
ttm	Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-09-28 08:37:02 +10:00
tve200	drm/tve200: Clean up panel bridging	2017-09-11 20:32:56 +02:00
udl	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 12:21:28 -07:00
vc4	drm/vc4: clean up error handling on devm_kzalloc failure	2017-09-08 11:06:54 -07:00
vgem	drm/vgem: switch to drm_*_get(), drm_*_put() helpers	2017-08-11 11:41:43 -04:00
via	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
virtio	drm/ttm: make ttm_mem_type_manager_func debug more useful	2017-08-17 15:45:59 -04:00
vmwgfx	main drm pull request for 4.14 merge window	2017-09-03 17:02:26 -07:00
zte	drm/zte: Use drm_gem_fb_create()	2017-08-27 19:31:06 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_atomic_helper.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_auth.c
drm_blend.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
drm_bridge.c	drm/bridge: change return type of drm_bridge_add function	2017-08-21 08:51:53 +05:30
drm_bufs.c	switch compat_drm_mapbufs() to drm_ioctl_kernel()	2017-07-04 13:16:26 -04:00
drm_cache.c
drm_color_mgmt.c	drm: More links for gamma support helpers	2017-06-20 12:13:11 +02:00
drm_connector.c	drm: Drop drm_get_link_status_name()	2017-09-11 15:53:33 +03:00
drm_context.c
drm_crtc.c	drm/crtc: Convert setcrtc ioctl locking to interruptible.	2017-09-13 09:52:05 +02:00
drm_crtc_helper.c	drm: Handle properties in the core for atomic drivers	2017-08-08 14:45:09 +02:00
drm_crtc_helper_internal.h	drm: Add drm_{crtc/encoder/connector}_mode_valid()	2017-05-30 08:37:24 +02:00
drm_crtc_internal.h	drm: Handle properties in the core for atomic drivers	2017-08-08 14:45:09 +02:00
drm_debugfs.c
drm_debugfs_crc.c	drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.	2017-09-13 09:50:52 +02:00
drm_dma.c
drm_dp_aux_dev.c	drm_dp_aux_dev: switch to read_iter/write_iter	2017-07-08 20:51:46 -04:00
drm_dp_dual_mode_helper.c	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
drm_dp_helper.c	drm/dp: Don't trust drm_dp_downstream_id()	2017-07-21 17:45:26 +03:00
drm_dp_mst_topology.c	drm/dp/mst: Sideband message transaction to power up/down nodes	2017-09-11 16:03:57 +03:00
drm_drv.c	drm: Clean up drm_dev_unplug	2017-08-11 10:49:21 +02:00
drm_dumb_buffers.c	drm/dumb-buffers: Add defaults for .dumb_map_offset and .dumb_destroy	2017-07-29 13:51:44 +02:00
drm_edid.c	drm: handle override and firmware EDID at drm_do_get_edid() level	2017-09-19 17:49:25 +03:00
drm_edid_load.c	drm: add backwards compatibility support for drm_kms_helper.edid_firmware	2017-09-19 18:11:45 +03:00
drm_encoder.c
drm_encoder_slave.c
drm_fb_cma_helper.c	drm/fb-cma-helper: Use drm_gem_framebuffer_helper	2017-08-16 21:34:38 +02:00
drm_fb_helper.c	drm/fb-helper: Avoid NULL ptr dereference in fb_set_suspend()	2017-09-02 14:37:59 +02:00
drm_file.c	drm: Document device unplug infrastructure	2017-08-11 10:48:03 +02:00
drm_flip_work.c
drm_fourcc.c
drm_framebuffer.c	Merge airlied/drm-next into drm-misc-next	2017-07-26 13:43:33 +02:00
drm_gem.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_gem_cma_helper.c	drm/gem-cma-helper: Remove drm_gem_cma_dumb_map_offset()	2017-08-16 20:21:24 +02:00
drm_gem_framebuffer_helper.c	drm/gem-fb-helper: Use debug message on gem lookup failure	2017-09-16 14:06:53 +02:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h	drm/syncobj: Add a signal ioctl (v3)	2017-08-29 10:16:25 +10:00
drm_ioc32.c	Merge airlied/drm-next into drm-misc-next	2017-07-26 13:43:33 +02:00
drm_ioctl.c	drm/syncobj: Add a signal ioctl (v3)	2017-08-29 10:16:25 +10:00
drm_irq.c	drm/doc: Polish irq helper documentation	2017-06-01 08:02:14 +02:00
drm_kms_helper_common.c	drm: add backwards compatibility support for drm_kms_helper.edid_firmware	2017-09-19 18:11:45 +03:00
drm_legacy.h	switch compat_drm_mapbufs() to drm_ioctl_kernel()	2017-07-04 13:16:26 -04:00
drm_lock.c
drm_memory.c
drm_mipi_dsi.c	drm: Convert to using %pOF instead of full_name	2017-07-26 13:45:06 +02:00
drm_mm.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
drm_mode_config.c	drm: Create a format/modifier blob	2017-08-01 17:50:06 +01:00
drm_mode_object.c	drm: Make __drm_object_property_get_value() static	2017-09-11 15:53:33 +03:00
drm_modes.c	drm/modes: Fix drm_mode_is_420_only() comment	2017-07-31 14:23:30 +02:00
drm_modeset_helper.c	drm: Plumb modifiers through plane init	2017-08-01 17:50:06 +01:00
drm_modeset_lock.c	drm/atomic: Prepare drm_modeset_lock infrastructure for interruptible waiting, v2.	2017-09-13 09:50:52 +02:00
drm_of.c	drm: Convert to using %pOF instead of full_name	2017-07-26 13:45:06 +02:00
drm_panel.c
drm_pci.c	drm/pci: Deprecate drm_pci_init/exit completely	2017-06-20 10:41:03 +02:00
drm_plane.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_plane_helper.c
drm_prime.c
drm_print.c
drm_probe_helper.c	drm: handle override and firmware EDID at drm_do_get_edid() level	2017-09-19 17:49:25 +03:00
drm_property.c	drm: rename, adjust and export drm_atomic_replace_property_blob	2017-07-14 15:53:06 +02:00
drm_rect.c
drm_scatter.c
drm_scdc_helper.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_simple_kms_helper.c	drm: Plumb modifiers through plane init	2017-08-01 17:50:06 +01:00
drm_syncobj.c	Merge tag 'drm-misc-next-2017-09-20' of git://anongit.freedesktop.org/git/drm-misc into drm-next	2017-09-28 05:46:15 +10:00
drm_sysfs.c
drm_trace.h	drm: Use correct path to trace include	2017-09-05 11:11:18 +02:00
drm_trace_points.c
drm_vblank.c	Merge airlied/drm-next into drm-misc-next	2017-07-26 13:43:33 +02:00
drm_vm.c	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 12:21:28 -07:00
drm_vma_manager.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
Kconfig	Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-09-28 08:37:02 +10:00
Makefile	Merge branch 'drm-next-4.15' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-09-28 08:37:02 +10:00