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linux/drivers/gpu/drm
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Mario Kleiner 89308cb841 drm/radeon: Fix eDP for single-display iMac10,1 (v2) 
commit 564d8a2cf3 upstream.

The late 2009, 27 inch Apple iMac10,1 has an
internal eDP display and an external Mini-
Displayport output, driven by a DCE-3.2, RV730
Radeon Mobility HD-4670.

The machine worked fine in a dual-display setup
with eDP panel + externally connected HDMI
or DVI-D digital display sink, connected via
MiniDP to DVI or HDMI adapter.

However, booting the machine single-display with
only eDP panel results in a completely black
display - even backlight powering off, as soon as
the radeon modesetting driver loads.

This patch fixes the single dispay eDP case by
assigning encoders based on dig->linkb, similar
to DCE-4+. While this should not be generally
necessary (Alex: "...atom on normal boards
should be able to handle any mapping."), Apple
seems to use some special routing here.

One remaining problem not solved by this patch
is that an external Minidisplayport->DP sink
does still not work on iMac10,1, whereas external
DVI and HDMI sinks continue to work.

The problem affects at least all tested kernels
since Linux 3.13 - didn't test earlier kernels, so
backporting to stable probably makes sense.

v2: With the original patch from 2016, Alex was worried it
    will break other DCE3.2 systems. Use dmi_match() to
    apply this special encoder assignment only for the
    Apple iMac 10,1 from late 2009.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-27 15:06:06 -07:00
..
amd drm/amd/amdgpu: Return error if initiating read out of range on vram 2017-07-27 15:06:06 -07:00
armada drm/armada: Convert the probe function to the generic drm_of_component_probe() 2015-10-20 12:01:34 +02:00
ast drm/ast: Handle configuration without P2A bridge 2017-07-05 14:37:15 +02:00
atmel-hlcdc drm: atmel-hlcdc: Fix vertical scaling 2016-09-24 10:07:42 +02:00
bochs
bridge drm/panel: Changes for v4.4-rc1 2015-11-05 11:07:13 +10:00
cirrus
exynos drm/exynos: fix error handling in exynos_drm_subdrv_open 2016-11-10 16:36:36 +01:00
fsl-dcu drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
gma500 drm/gma500/psb: Actually use VBT mode when it is found 2017-06-07 12:06:01 +02:00
i2c Merge branch 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next 2015-10-15 14:17:13 +10:00
i810
i915 drm/i915: Stop using RP_DOWN_EI on Baytrail 2017-04-18 07:14:34 +02:00
imx drm/imx: Match imx-ipuv3-crtc components using device node in platform data 2016-06-07 18:14:37 -07:00
mga drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
mgag200 drm/mgag200: Black screen fix for G200e rev 4 2016-07-27 09:47:32 -07:00
msm drm/msm: Expose our reservation object when exporting a dmabuf. 2017-06-14 13:16:23 +02:00
nouveau drm/nouveau: Don't enabling polling twice on runtime resume 2017-06-17 06:39:37 +02:00
omapdrm drm/omap: fix fbdev pix format to support all platforms 2015-12-14 10:00:22 +02:00
panel spi: Drop owner assignment from spi_drivers 2015-10-28 10:30:17 +09:00
qxl qxl: check for kmap failures 2016-09-30 10:18:39 +02:00
r128 drm/irq: Use unsigned int pipe in public API 2015-10-06 12:57:47 +02:00
radeon drm/radeon: Fix eDP for single-display iMac10,1 (v2) 2017-07-27 15:06:06 -07:00
rcar-du drm: rcar-du: Add support for the R8A7794 DU 2015-10-21 18:52:38 +03:00
rockchip drm/rockchip: Use CRTC vblank event interface 2015-12-02 10:22:21 +08:00
savage
shmobile drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
sis include/uapi/drm/sis_drm.h: move sis_file_private to drivers/gpu/drm/sis/sis_drv.h 2015-10-16 11:27:46 +10:00
sti drm/sti: load HQVDP firmware the first time HQVDP's plane is used 2015-11-03 13:04:56 +01:00
tdfx
tegra Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
tilcdc drm: Stop using drm_vblank_count() as the hw frame counter 2015-10-07 16:13:52 +02:00
ttm drm/ttm: fix use-after-free races in vm fault handling 2017-05-14 13:32:59 +02:00
udl drm/udl: Use unlocked gem unreferencing 2016-04-20 15:41:55 +09:00
vc4 drm/vc4: Make sure that planes aren't scaled. 2015-11-17 12:27:03 -08:00
vgem drm/vgem: Drop vgem_drm_gem_mmap 2015-10-19 11:00:44 +02:00
via via_drm.h: move struct via_file_private definition to drivers/gpu/drm/via/via_drv.h 2015-10-16 11:27:49 +10:00
virtio drm/virtio: don't leak bo on drm_gem_object_init failure 2017-07-15 11:57:45 +02:00
vmwgfx drm/vmwgfx: Free hash table allocated by cmdbuf managed res mgr 2017-07-05 14:37:16 +02:00
ati_pcigart.c
drm_agpsupport.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_atomic_helper.c drm/atomic: fix an error code in mode_fixup() 2017-03-15 09:57:15 +08:00
drm_atomic.c drm: make drm_atomic_set_mode_prop_for_crtc() more reliable 2016-07-27 09:47:35 -07:00
drm_auth.c
drm_bridge.c
drm_bufs.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_cache.c drm: Restore double clflush on the last partial cacheline 2016-08-20 18:09:23 +02:00
drm_context.c
drm_crtc_helper.c
drm_crtc_internal.h
drm_crtc.c drm: Reject page_flip for !DRIVER_MODESET 2016-09-15 08:27:51 +02:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c drm/dp: move hw_mutex up the call stack 2016-04-20 15:41:55 +09:00
drm_dp_mst_topology.c drm/dp/mst: fix kernel oops when turning off secondary monitor 2017-02-23 17:43:09 +01:00
drm_drv.c drm: Fix an unwanted master inheritance v2 2015-12-04 12:28:14 +10:00
drm_edid_load.c drm: Constify generic_edid_names[] 2015-09-08 13:45:52 +02:00
drm_edid.c drm/edid: Add 10 bpc quirk for LGD 764 panel in HP zBook 17 G2 2017-05-25 14:30:17 +02:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c drm/fb_helper: Fix references to dev->mode_config.num_connector 2016-06-07 18:14:36 -07:00
drm_flip_work.c
drm_fops.c drm: Fix an unwanted master inheritance v2 2015-12-04 12:28:14 +10:00
drm_gem_cma_helper.c Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-11-10 09:33:06 -08:00
drm_gem.c drm: Balance error path for GEM handle allocation 2016-09-15 08:27:47 +02:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h drm: move drm_class into drm_sysfs.c 2015-09-09 15:05:17 +02:00
drm_ioc32.c drm: Only use compat ioctl for addfb2 on X86/IA64 2016-09-24 10:07:43 +02:00
drm_ioctl.c drm: Enforce unlocked ioctl operation for kms driver ioctls 2015-10-16 15:50:54 +02:00
drm_irq.c drm: Fix treatment of drm_vblank_offdelay in drm_vblank_on() (v2) 2016-03-03 15:07:23 -08:00
drm_legacy.h
drm_lock.c signals: kill block_all_signals() and unblock_all_signals() 2015-11-06 17:50:42 -08:00
drm_memory.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_mipi_dsi.c
drm_mm.c drm/mm: Do DRM_MM_CREATE_TOP adj_start calculation after color_adjust 2015-09-08 13:45:47 +02:00
drm_modes.c drm: Fix broken VT switch with video=1366x768 option 2017-02-01 08:30:52 +01:00
drm_modeset_lock.c drm/atomic: Make sure lock is held in trylock contexts. 2015-09-08 13:45:53 +02:00
drm_of.c drm: Introduce generic probe function for component based masters. 2015-10-20 12:01:29 +02:00
drm_panel.c
drm_pci.c drm/doc: Update docs about device instance setup 2015-09-30 10:06:06 +02:00
drm_plane_helper.c drm/atomic: Make prepare_fb/cleanup_fb only take state, v3. 2015-09-08 13:45:54 +02:00
drm_platform.c drm/doc: Update docs about device instance setup 2015-09-30 10:06:06 +02:00
drm_prime.c drm/prime: Pass the right module owner through to dma_buf_export() 2016-10-31 04:13:57 -06:00
drm_probe_helper.c drm: Don't overwrite UNVERFIED mode status to OK 2015-12-15 11:00:10 +10:00
drm_rect.c drm: Use DRM_ROTATE_MASK and DRM_REFLECT_MASK 2015-10-05 15:32:51 +02:00
drm_scatter.c
drm_sysfs.c Merge commit '06d1ee32a4d25356a710b49d5e95dbdd68bdf505' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next 2015-10-16 10:25:28 +10:00
drm_trace_points.c
drm_trace.h
drm_vm.c drm: Remove __OS_HAS_AGP 2015-09-30 10:44:48 +02:00
drm_vma_manager.c drm/gem: Use kref_get_unless_zero for the weak mmap references 2015-10-19 11:00:44 +02:00
Kconfig drm/vc4: Add KMS support for Raspberry Pi. 2015-10-21 10:33:12 +01:00
Makefile Merge tag 'drm-vc4-next-2015-10-21' of http://github.com/anholt/linux into drm-next 2015-10-22 10:31:17 +10:00