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7130013297
linux/drivers/gpu/drm
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Imre Deak 7130013297 drm/i915: Fix DDI PHY init if it was already on 
The common lane power down flag of a DPIO PHY has a funky semantic:
after the initial enabling of the PHY (so from a disabled state) this
flag will be clear. It will be set only after the PHY will be used for
the first time (for instance due to enabling the corresponding pipe) and
then become unused (due to disabling the pipe). During the initial PHY
enablement we don't know which of the above phases we are in, so move
the check for the flag where this is known, the HW readout code. This is
where the rest of lane power down status checks are done anyway.

This fixes at least a problem on GLK where after module reloading, the
common lane power down flag of PHY1 is set, but the PHY is actually
powered-on and properly set up. The GRC readout code for other PHYs will
hence think that PHY1 is not powered initially and disable it after the
GRC readout. This will cause the AUX power well related to PHY1 to get
disabled in a stuck state, timing out when we try to enable it later.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Fixes: e93da0a013 ("drm/i915/bxt: Sanitiy check the PHY lane power down status")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102777
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171002135307.26117-1-imre.deak@intel.com
(cherry picked from commit e19c1eb885)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2017-10-03 13:47:29 -07:00
..
amd Merge tag 'drm-amdkfd-next-2017-09-02' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes 2017-09-18 16:29:47 +10:00
arc 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
arm drm: Nuke drm_atomic_helper_plane_set_property 2017-08-08 14:45:16 +02:00
armada drm: armada: remove dead empty functions 2017-08-04 11:35:34 +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: Nuke drm_atomic_helper_plane_set_property 2017-08-08 14:45:16 +02:00
bochs drm/bochs: Use the drm_driver.dumb_destroy default 2017-08-16 20:18:55 +02:00
bridge main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
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 drm/exynos/hdmi: Fix unsafe list iteration 2017-09-20 12:05:23 +09:00
fsl-dcu drm: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
gma500 Merge branch 'i2c/for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2017-09-09 14:18:40 -07:00
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: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
i810 drm/pci: Deprecate drm_pci_init/exit completely 2017-06-20 10:41:03 +02:00
i915 drm/i915: Fix DDI PHY init if it was already on 2017-10-03 13:47:29 -07:00
imx main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
lib mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
mediatek drm/mediatek: switch to drm_*_get(), drm_*_put() helpers 2017-08-11 11:35:02 -04:00
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: Convert to using %pOF instead of full_name 2017-07-26 13:45:06 +02:00
pl111 drm/pl111: Use drm_gem_fb_create() and drm_gem_fb_prepare_fb() 2017-08-16 21:35:38 +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 lib/interval_tree: fast overlap detection 2017-09-08 18:26:49 -07:00
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 main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
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: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
stm drm: make DRM_STM default n 2017-08-10 11:26:49 +10:00
sun4i main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
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: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
tinydrm drm/tinydrm: make function st7586_pipe_enable static 2017-08-16 21:39:26 +02:00
ttm amd fixes pull 2017-09-15 17:52:52 -07:00
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: Use drm_gem_fb_create() 2017-08-16 21:35:57 +02:00
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: Nuke drm_atomic_helper_connector_dpms 2017-08-08 14:48:48 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c Merge airlied/drm-next into drm-intel-next-queued 2017-08-10 18:12:01 +02:00
drm_atomic.c main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
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: Introduce drm_bridge_mode_valid() 2017-05-30 08:37:50 +02:00
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: Handle properties in the core for atomic drivers 2017-08-08 14:45:09 +02:00
drm_context.c
drm_crtc_helper_internal.h drm: Add drm_{crtc/encoder/connector}_mode_valid() 2017-05-30 08:37:24 +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_internal.h drm: Handle properties in the core for atomic drivers 2017-08-08 14:45:09 +02:00
drm_crtc.c drm: Handle properties in the core for atomic drivers 2017-08-08 14:45:09 +02:00
drm_debugfs_crc.c drm/crc: Only open CRC on atomic drivers when the CRTC is active. 2017-07-17 16:34:51 +02:00
drm_debugfs.c
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 Linux 4.13-rc2 2017-07-27 08:15:43 +10:00
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_load.c
drm_edid.c drm/edid: parse ycbcr 420 deep color information 2017-07-14 21:23:54 +03:00
drm_encoder_slave.c
drm_encoder.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: pass physical dimensions to fbdev 2017-08-07 17:01:15 +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_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: Add GEM backed framebuffer library 2017-08-16 21:32:23 +02:00
drm_gem.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_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_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: Handle properties in the core for atomic drivers 2017-08-08 14:45:09 +02:00
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: Improve kerneldoc for drm_modeset_lock 2017-07-26 13:45:08 +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_helper.c
drm_plane.c main drm pull request for 4.14 merge window 2017-09-03 17:02:26 -07:00
drm_prime.c
drm_print.c
drm_probe_helper.c drm: add helper to validate YCBCR420 modes 2017-07-14 21:23:54 +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 mm: treewide: remove GFP_TEMPORARY allocation flag 2017-09-13 18:53:16 -07:00
drm_simple_kms_helper.c drm: Plumb modifiers through plane init 2017-08-01 17:50:06 +01:00
drm_syncobj.c drm/syncobj: Add a signal ioctl (v3) 2017-08-29 10:16:25 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
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
Makefile drm: Add GEM backed framebuffer library 2017-08-16 21:32:23 +02:00