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linux/drivers/gpu/drm
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Dhinakaran Pandiyan b1e314462b drm/i915/dp: Write to SET_POWER dpcd to enable MST hub. 
If bios sets up an MST output and hardware state readout code sees this is
an SST configuration, when disabling the encoder we end up calling
->post_disable_dp() hook instead of the MST version. Consequently, we write
to the DP_SET_POWER dpcd to set it D3 state. Further along when we try
enable the encoder in MST mode, POWER_UP_PHY transaction fails to power up
the MST hub. This results in continuous link training failures which keep
the system busy delaying boot. We could identify bios MST boot discrepancy
and handle it accordingly but a simple way to solve this is to write to the
DP_SET_POWER dpcd for MST too.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105470
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reported-by: Laura Abbott <labbott@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 5ea2355a10 ("drm/i915/mst: Use MST sideband message transactions for dpms control")
Tested-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180314054825.1718-1-dhinakaran.pandiyan@intel.com
(cherry picked from commit ad260ab32a)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2018-03-19 16:21:52 -07:00
..
amd drm/amdgpu/dce: Don't turn off DP sink when disconnected 2018-03-14 15:40:00 -05:00
arc drm/arc: Use drm_gem_cma_print_info() 2017-11-11 11:23:15 +01:00
arm drm/arm/mali: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:43 +01:00
armada Merge branch 'drm-armada-devel-4.15' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-next 2018-01-05 09:51:43 +10:00
ast drm/ast: Load lut in crtc_commit 2018-02-01 11:35:46 +10:00
atmel-hlcdc drm/atmel-hlcdc: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:39 +01:00
bochs drm/bochs: remove the default io_mem_pfn set 2017-12-27 11:34:51 -05:00
bridge Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
cirrus - fix lut loading for cirrus 2018-02-21 07:09:15 +10:00
etnaviv drm/etnaviv: use memset32 to init pagetable 2018-01-02 17:36:53 +01:00
exynos drm: exynos: Use proper macro definition for HDMI_I2S_PIN_SEL_1 2018-02-20 10:51:36 +09:00
fsl-dcu drm/fsl-dcu: Use drm_mode_config_helper_suspend/resume() 2017-12-05 13:46:41 +01:00
gma500 pci-v4.16-changes 2018-02-06 09:59:40 -08:00
hisilicon drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
i2c Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
i810
i915 drm/i915/dp: Write to SET_POWER dpcd to enable MST hub. 2018-03-19 16:21:52 -07:00
imx drm/imx: format modifier support 2018-01-05 11:33:24 +10:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mediatek Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
meson Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few 2018-02-22 08:39:26 +10:00
mga
mgag200 drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
msm treewide/trivial: Remove ';;$' typo noise 2018-02-22 10:59:33 +01:00
mxsfb drm/mxsfb: Use drm_gem_fb_create() and drm_gem_fb_prepare_fb() 2017-10-01 17:02:20 +02:00
nouveau Merge branch 'linux-4.16' of git://github.com/skeggsb/linux into drm-fixes 2018-03-16 12:06:17 +10:00
omapdrm Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
panel drm/panel: lvds: Handle the optional regulator case properly 2018-01-15 10:16:56 +01:00
pl111 drm/pl111: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:41 +01:00
qxl drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
r128 r128: don't open-code memdup_user() 2017-12-27 19:00:09 -05:00
radeon drm/radeon: fix prime teardown order 2018-03-14 15:39:42 -05:00
rcar-du drm: rcar-du: Clip planes to screen boundaries 2017-12-04 18:38:31 +02:00
rockchip drm/rockchip: lvds: Explicitly include pinctrl headers 2018-02-05 09:41:54 -08:00
savage
scheduler treewide/trivial: Remove ';;$' typo noise 2018-02-22 10:59:33 +01:00
selftests Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
shmobile main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
sis
sti drm/sti: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:41 +01:00
stm drm/stm: ltdc: Remove unnecessary platform_get_resource() error check 2017-12-19 15:23:45 +01:00
sun4i drm/sun4i: crtc: Call drm_crtc_vblank_on / drm_crtc_vblank_off 2018-03-06 16:27:54 +01:00
tdfx
tegra Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
tilcdc drm/tilcdc changes for 4.16 2017-12-21 11:10:20 +10:00
tinydrm drm/tinydrm: add driver for ST7735R panels 2018-01-03 13:54:24 +01:00
ttm drm/ttm: Fix 'buf' pointer update in ttm_bo_vm_access_kmap() (v2) 2018-01-29 23:09:31 -05:00
tve200 drm/tve200: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:42 +01:00
udl Merge tag 'drm-misc-next-2017-10-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-10-24 16:51:05 +10:00
vc4 drm/graphics pull request for v4.16-rc1 2018-02-01 17:48:47 -08:00
vgem treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
via Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
virtio virtio-gpu: fix ioctl and expose the fixed status to userspace. 2018-02-27 08:37:58 +01:00
vmwgfx drm/graphics pull request for v4.16-rc1 2018-02-01 17:48:47 -08:00
zte drm/zte: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:43 +01:00
ati_pcigart.c
drm_agpsupport.c drm/agpsupport: Remove extra blank line 2017-09-20 09:54:19 -07:00
drm_atomic.c drm/atomic: document how to handle driver private objects 2017-12-15 11:26:54 +01:00
drm_atomic_helper.c Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few 2018-02-22 08:39:26 +10:00
drm_auth.c drm: Check for lessee in DROP_MASTER ioctl 2018-01-31 09:27:51 +01:00
drm_blend.c drm/atomic-helper: Make zpos property kerneldoc less misleading 2017-12-14 14:20:35 +01:00
drm_bridge.c drm/bridge: change return type of drm_bridge_add function 2017-08-21 08:51:53 +05:30
drm_bufs.c
drm_cache.c
drm_color_mgmt.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_connector.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_context.c
drm_crtc.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
drm_crtc_helper.c drm: Replace kzalloc with kcalloc 2017-10-13 15:49:03 -04:00
drm_crtc_helper_internal.h
drm_crtc_internal.h drm: rework delayed connector cleanup in connector_iter 2017-12-13 22:59:00 +01:00
drm_debugfs.c drm/debugfs: Fix framebuffer debugfs file init 2017-11-14 11:08:17 +02:00
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 Pass mode to wait_on_atomic_t() action funcs and provide default actions 2017-11-13 15:38:16 +00:00
drm_dp_dual_mode_helper.c drm: Add retries for lspcon mode detection 2017-10-13 12:13:54 +03:00
drm_dp_helper.c drm: don't link DP aux i2c adapter to the hardware device node 2017-11-20 09:34:17 +01:00
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 Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_dumb_buffers.c
drm_edid.c Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few 2018-02-22 08:39:26 +10:00
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: Check mode object lease status in all master ioctl paths [v4] 2017-10-25 16:31:30 +10:00
drm_encoder_slave.c
drm_fb_cma_helper.c drm/cma-helper: Add drm_fb_cma_fbdev_init/fini() 2017-12-08 14:27:47 +01:00
drm_fb_helper.c drm/framebuffer: Print task that allocated the fb in debug info. 2017-12-20 15:30:17 +01:00
drm_file.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
drm_flip_work.c
drm_fourcc.c
drm_framebuffer.c drm/nouveau: prefer XBGR2101010 for addfb ioctl 2018-02-23 13:51:42 +01:00
drm_gem.c drm/framebuffer: Add framebuffer debugfs file 2017-11-11 11:21:19 +01:00
drm_gem_cma_helper.c drm: gem_cma_helper.c: Allow importing of contiguous scatterlists with nents > 1 2017-11-15 18:14:46 +01:00
drm_gem_framebuffer_helper.c drm/gem-fb-helper: drm_gem_fbdev_fb_create() make funcs optional 2017-12-08 14:26:00 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_ioc32.c
drm_ioctl.c drm: Add four ioctls for managing drm mode object leases [v7] 2017-10-25 16:31:30 +10:00
drm_irq.c
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_lease.c drm: move lease init after validation in drm_lease_create 2017-12-21 09:49:40 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c
drm_mm.c Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few 2018-02-22 08:39:26 +10:00
drm_mode_config.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_mode_object.c drm/mode_object: fix documentation for object lookups. 2017-11-10 13:50:47 +10:00
drm_modes.c
drm_modeset_helper.c drm/modeset-helper: Add simple modeset suspend/resume helpers 2017-11-30 18:18:08 +01:00
drm_modeset_lock.c drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all 2017-10-31 17:36:46 +01:00
drm_of.c drm/drm_of: Move drm_of_panel_bridge_remove_function into header. 2017-10-13 16:59:36 +02:00
drm_panel.c
drm_panel_orientation_quirks.c drm: fix tainted kernel caused by drm_panel_orientation_quirks.c 2017-12-23 20:06:45 +01:00
drm_pci.c drm/core: clean up references to drm_dev_unref() 2017-09-27 10:53:12 +02:00
drm_plane.c drm/plane: Make framebuffer refcounting the responsibility of setplane_internal callers 2017-12-20 14:49:06 +01:00
drm_plane_helper.c drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c 2017-11-20 21:14:22 +02:00
drm_prime.c drm/prime: skip CPU sync in map/unmap dma_buf 2017-12-04 17:30:19 +01:00
drm_print.c drm/printer: Add drm_vprintf() 2017-11-23 12:31:49 +02:00
drm_probe_helper.c Fixes for 4.16. I contains fixes for deadlock on runtime suspend on few 2018-02-22 08:39:26 +10:00
drm_property.c drm: Pass struct drm_file * to __drm_mode_object_find [v2] 2017-10-12 10:03:04 +10:00
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: Move drm_plane_helper_check_state() into drm_atomic_helper.c 2017-11-20 21:14:22 +02:00
drm_syncobj.c Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
drm_sysfs.c
drm_trace.h main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
drm_trace_points.c
drm_vblank.c Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
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 drm/drm_vma_manager.c: Remove useless goto statement 2017-11-02 10:44:08 +01:00
Kconfig Fixes for 4.16: 2018-01-25 11:42:25 +10:00
Makefile drm: fix gpu scheduler link order 2018-01-24 15:49:04 -05:00