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44a7276b30
linux_dsm_epyc7002/drivers/gpu/drm
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Ville Syrjälä 44a7276b30 drm/i915: Fix hpd handling for pins with two encoders 
In my haste to remove irq_port[] I accidentally changed the
way we deal with hpd pins that are shared by multiple encoders
(DP and HDMI for pre-DDI platforms). Previously we would only
handle such pins via ->hpd_pulse(), but now we queue up the
hotplug work for the HDMI encoder directly. Worse yet, we now
count each hpd twice and this increment the hpd storm count
twice as fast. This can lead to spurious storms being detected.

Go back to the old way of doing things, ie. delegate to
->hpd_pulse() for any pin which has an encoder with that hook
implemented. I don't really like the idea of adding irq_port[]
back so let's loop through the encoders first to check if we
have an encoder with ->hpd_pulse() for the pin, and then go
through all the pins and decided on the correct course of action
based on the earlier findings.

I have occasionally toyed with the idea of unifying the pre-DDI
HDMI and DP encoders into a single encoder as well. Besides the
hotplug processing it would have the other benefit of preventing
userspace from trying to enable both encoders at the same time.
That is simply illegal as they share the same clock/data pins.
We have some testcases that will attempt that and thus fail on
many older machines. But for now let's stick to fixing just the
hotplug code.

Cc: stable@vger.kernel.org # 4.19+
Cc: Lyude Paul <lyude@redhat.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Fixes: b6ca3eee18 ("drm/i915: Nuke dev_priv->irq_port[]")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181108200424.28371-1-ville.syrjala@linux.intel.com
Reviewed-by: Lyude Paul <lyude@redhat.com>
(cherry picked from commit 5a3aeca97a)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2018-11-12 17:07:12 +02:00
..
amd drm/amd/amdgpu/dm: Fix dm_dp_create_fake_mst_encoder() 2018-11-07 18:21:05 -05:00
arc drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
arm drm: malidp: Add the size of the superblocks when calculating total 2018-10-05 15:39:51 +01:00
armada drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
ast drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
atmel-hlcdc drm/atmel-hlcdc: support bus-width (12/16/18/24) in endpoint nodes 2018-08-27 21:22:52 +02:00
bochs drm/bochs: support changing byteorder at mode set time 2018-09-25 14:49:49 +02:00
bridge drm/bridge: ti-sn65dsi86: Remove the mystery delay 2018-10-29 11:53:27 -04:00
cirrus drm/cirrus: use simpler remove_conflicting_pci_framebuffers() 2018-09-03 18:16:47 +02:00
etnaviv Merge branch 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux into drm-fixes 2018-11-07 09:32:30 +10:00
exynos drm/exynos/fbdev: do not skip fbdev init if there are no connectors 2018-11-05 16:37:24 +09:00
fsl-dcu drm/fsl-dcu: Replace drm_dev_unref with drm_dev_put 2018-09-26 22:20:16 +02:00
gma500 Merge drm/drm-next into drm-misc-next 2018-08-27 10:00:03 -04:00
hisilicon drm/hisilicon: Replace ttm_bo_unref with ttm_bo_put 2018-09-26 11:42:12 +08:00
i2c Merge branch 'drm-tda9950-fixes' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-fixes 2018-10-04 10:32:14 +10:00
i810 drm/i810: off by one in i810_dma_vertex() 2018-07-03 15:00:42 +02:00
i915 drm/i915: Fix hpd handling for pins with two encoders 2018-11-12 17:07:12 +02:00
imx drm/imx: fix build failure without CONFIG_DRM_FBDEV_EMULATION 2018-10-05 12:09:20 +02:00
lib
mediatek drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
meson drm/meson: Make DMT timings parameters and pixel clock generic 2018-07-16 11:14:59 +02:00
mga
mgag200 drm/mgag200: use simpler remove_conflicting_pci_framebuffers() 2018-09-03 18:17:32 +02:00
msm drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
mxsfb drm/mxsfb: Switch to drm_atomic_helper_commit_tail_rpm 2018-09-26 22:07:40 +02:00
nouveau drm, i915, amdgpu, bridge + core quirk 2018-11-02 10:58:20 -07:00
omapdrm drm/omap: fix use of freed memory 2018-10-02 09:36:56 +03:00
panel drm/panel: simple: Innolux TV123WAM is actually P120ZDG-BF1 2018-10-29 11:53:28 -04:00
pl111 Merge drm/drm-next into drm-misc-next 2018-09-27 02:54:54 -04:00
qxl qxl: refactor to use drm_fb_helper_fbdev_setup 2018-09-12 09:01:18 +02:00
r128
radeon drm/radeon: change SPDX identifier to MIT 2018-10-15 16:16:12 -05:00
rcar-du drm: rcar-du: Add r8a77990 and r8a77995 device support 2018-09-25 00:41:05 +03:00
rockchip drm/rockchip: Allow driver to be shutdown on reboot/kexec 2018-09-10 10:52:27 +02:00
savage drm/savage: off by one in savage_bci_cmdbuf() 2018-07-04 14:27:01 +02:00
scheduler drm/sched: fix timeout handling v2 2018-10-12 12:52:32 -05:00
selftests drm-misc-next for 4.19: 2018-06-22 12:58:08 +10:00
shmobile drm: shmobile: convert to SPDX identifiers 2018-09-14 13:54:02 +03:00
sis
sti drm/sti: Use drm_fbdev_generic_setup() 2018-09-25 11:33:51 +02:00
stm drm/stm: Replace drm_dev_unref with drm_dev_put 2018-07-13 10:11:02 +02:00
sun4i drm/sun4i: tcon: prevent tcon->panel dereference if NULL 2018-11-06 16:55:29 +01:00
tdfx
tegra drm/tegra: Changes for v4.20-rc1 2018-09-28 09:47:31 +10:00
tilcdc drm/tilcdc: Convert drm_atomic_helper_suspend/resume() 2018-10-01 15:52:29 +03:00
tinydrm drm/tinydrm: Replace drm_dev_unref with drm_dev_put 2018-08-07 17:09:15 +02:00
ttm list: introduce list_bulk_move_tail helper 2018-10-10 15:20:54 -05:00
tve200 drm/tve200: Use drm_fbdev_generic_setup() 2018-09-25 11:34:24 +02:00
udl Merge drm/drm-next into drm-misc-next 2018-09-27 02:54:54 -04:00
v3d drm/scheduler: remove timeout work_struct from drm_sched_job (v3) 2018-09-27 09:55:45 -05:00
vc4 Merge drm/drm-next into drm-misc-next 2018-09-27 02:54:54 -04:00
vgem drm/vgem: Remove unecessary dma_fence_ops 2018-08-17 11:22:58 +02:00
via
virtio virtio: Support prime objects vmap/vunmap 2018-09-26 08:05:07 +02:00
vkms drm/vkms: Fix possible memory leak in _vkms_get_crc() 2018-09-21 10:50:45 +02:00
vmwgfx Merge branch 'vmwgfx-next' of git://people.freedesktop.org/~thomash/linux into drm-next 2018-10-04 10:19:33 +10:00
xen drm: Replace NULL with error value in drm_prime_pages_to_sg 2018-07-23 11:47:35 +03:00
zte drm/zte: Use drm_fbdev_generic_setup() 2018-09-25 11:35:33 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm, i915, amdgpu, bridge + core quirk 2018-11-02 10:58:20 -07:00
drm_atomic_uapi.c drm/atomic_helper: Stop modesets on unregistered connectors harder 2018-10-19 11:46:46 +03:00
drm_atomic.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_auth.c
drm_blend.c drm: Clarify DRM_MODE_REFLECT_X/Y documentation 2018-09-11 11:21:30 +01:00
drm_bridge.c drm: bridge: document bridge attach/detach imbalance 2018-09-13 11:28:12 +02:00
drm_bufs.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_cache.c
drm_client.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_color_mgmt.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_connector.c drm/atomic_helper: Stop modesets on unregistered connectors harder 2018-10-19 11:46:46 +03:00
drm_context.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_crtc_helper_internal.h
drm_crtc_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_crtc_internal.h drm: refuse ADDFB2 ioctl for broken bigendian drivers 2018-09-10 07:10:36 +02:00
drm_crtc.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_debugfs_crc.c Revert "drm: crc: Wait for a frame before returning from open()" 2018-08-22 09:50:16 -07:00
drm_debugfs.c drm/atomic: Use drm_drv_uses_atomic_modeset() for debugfs creation 2018-09-17 19:24:37 -04:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_cec.c drm_dp_cec: add note about good MegaChips 2900 CEC support 2018-08-31 10:20:38 +02:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm: add LG eDP panel to quirk database 2018-09-19 16:44:12 +03:00
drm_dp_mst_topology.c drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read() 2018-08-31 10:20:38 +02:00
drm_drv.c drm: Introduce per-device driver_features 2018-09-13 18:44:06 +03:00
drm_dumb_buffers.c drm-misc-next for 4.19: 2018-06-28 13:29:07 +10:00
drm_edid_load.c
drm_edid.c drm, i915, amdgpu, bridge + core quirk 2018-11-02 10:58:20 -07:00
drm_encoder_slave.c
drm_encoder.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_fb_cma_helper.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_fb_helper.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_file.c drm: Begin an API for in-kernel clients 2018-07-10 14:51:37 +02:00
drm_flip_work.c
drm_fourcc.c drm: move quirk_addfb_prefer_xbgr_30bpp handling to drm_driver_legacy_fb_format too 2018-09-25 14:49:50 +02:00
drm_framebuffer.c drm: move quirk_addfb_prefer_xbgr_30bpp handling to drm_driver_legacy_fb_format too 2018-09-25 14:49:50 +02:00
drm_gem_cma_helper.c drm: Replace NULL with error value in drm_prime_pages_to_sg 2018-07-23 11:47:35 +03:00
drm_gem_framebuffer_helper.c drm: use drm_driver_legacy_fb_format in drm_gem_fbdev_fb_create 2018-09-25 14:49:49 +02:00
drm_gem.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_global.c drm: add SPDX identifier and clarify license 2018-06-29 15:28:47 -05:00
drm_hashtab.c
drm_info.c
drm_internal.h drm: Drop drmP.h from drm_connector.c 2018-09-09 14:19:17 +02:00
drm_ioc32.c
drm_ioctl.c drm: Return -EOPNOTSUPP in drm_setclientcap() when driver do not support KMS 2018-09-21 11:19:40 +02:00
drm_irq.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_kms_helper_common.c
drm_lease.c drm pull for 4.20-rc1 2018-10-28 17:49:53 -07:00
drm_legacy.h
drm_lock.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_memory.c
drm_mipi_dsi.c drm: Add support for pps and compression mode command packet 2018-07-25 07:51:05 -04:00
drm_mm.c
drm_mode_config.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_mode_object.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_modes.c drm: drop _mode_ from remaining connector functions 2018-07-13 18:40:27 +02:00
drm_modeset_helper.c
drm_modeset_lock.c drm: Change deadlock-avoidance algorithm for the modeset locks. 2018-07-03 09:46:05 +02:00
drm_of.c drm/doc: Include drm_of.c helpers 2018-07-13 18:40:28 +02:00
drm_panel_orientation_quirks.c drm: panel-orientation-quirks: Add quirk for Acer One 10 (S1003) 2018-10-17 14:17:38 +02:00
drm_panel.c This is the 4.19-rc6 release 2018-10-04 11:03:34 +10:00
drm_pci.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_plane_helper.c drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00
drm_plane.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_prime.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_print.c drm: Add puts callback for the coredump printer 2018-07-30 08:49:41 -04:00
drm_probe_helper.c drm: drop _mode_ from remaining connector functions 2018-07-13 18:40:27 +02:00
drm_property.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_rect.c
drm_scatter.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_scdc_helper.c
drm_simple_kms_helper.c drm: drop _mode_ from drm_mode_connector_attach_encoder 2018-07-13 18:40:27 +02:00
drm_syncobj.c This is the 4.19-rc6 release 2018-10-04 11:03:34 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vblank.c drm: Differentiate the lack of an interface from invalid parameter 2018-09-14 17:29:47 +01:00
drm_vm.c
drm_vma_manager.c drm: Remove "protection" around drm_vma_offset_manager_destroy() 2018-09-04 19:00:32 +01:00
drm_writeback.c drm: writeback: Fix doc that says connector should be disconnected 2018-07-16 16:35:27 +01:00
Kconfig drm/fb_helper: Allow leaking fbdev smem_start 2018-10-03 21:08:21 +02:00
Makefile drm: extract drm_atomic_uapi.c 2018-09-09 14:19:18 +02:00