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alistair23-linux/drivers/gpu/drm/i915
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Jani Nikula 0d4ced1c5b drm/i915/backlight: fix CPU mode backlight takeover on LPT 
The pch_get_backlight(), lpt_get_backlight(), and lpt_set_backlight()
functions operate directly on the hardware registers. If inverting the
value is needed, using intel_panel_compute_brightness(), it should only
be done in the interface between hardware registers and
panel->backlight.level.

The CPU mode takeover code added in commit 5b1ec9ac7a
("drm/i915/backlight: Fix backlight takeover on LPT, v3.") reads the
hardware register and converts to panel->backlight.level correctly,
however the value written back should remain in the hardware register
"domain".

This hasn't been an issue, because GM45 machines are the only known
users of i915.invert_brightness and the brightness invert quirk, and
without one of them no conversion is made. It's likely nobody's ever hit
the problem.

Fixes: 5b1ec9ac7a ("drm/i915/backlight: Fix backlight takeover on LPT, v3.")
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: <stable@vger.kernel.org> # v5.1+
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210108152841.6944-1-jani.nikula@intel.com
 		2021-01-11 11:49:07 +02:00
..
display drm/i915/backlight: fix CPU mode backlight takeover on LPT 2021-01-11 11:49:07 +02:00
gem drm/i915: Fix mismatch between misplaced vma check and vma insert 2020-12-18 12:30:10 +02:00
gt drm/i915: make relay callbacks const 2020-12-15 22:46:18 -08:00
gvt Merge drm/drm-next into drm-intel-next 2021-01-08 06:03:51 -05:00
selftests drm for 5.11-rc1 2020-12-14 11:07:56 -08:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Kconfig drm/i915: use vmap in i915_gem_object_map 2020-10-18 09:27:10 -07:00
Kconfig.debug drm/i915: Exclude low pages (128KiB) of stolen from use 2020-10-21 08:32:28 -04:00
Kconfig.profile drm/i915: Replace the hardcoded I915_FENCE_TIMEOUT 2020-05-09 12:57:57 +01:00
Kconfig.unstable
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Makefile Merge tag 'gvt-next-fixes-2020-12-25' of https://github.com/intel/gvt-linux into drm-intel-next 2021-01-05 15:28:10 -05:00
i915_active.c drm next for 5.10-rc1 2020-10-15 10:46:16 -07:00
i915_active.h drm/i915: Provide a fastpath for waiting on vma bindings 2020-09-07 13:29:19 +03:00
i915_active_types.h
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i915_buddy.c drm/i915/buddy: avoid double list_add 2020-03-06 14:33:08 +00:00
i915_buddy.h
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i915_cmd_parser.c drm/i915: Skip over MI_NOOP when parsing 2020-10-06 10:41:11 +01:00
i915_config.c drm/i915: Replace the hardcoded I915_FENCE_TIMEOUT 2020-05-09 12:57:57 +01:00
i915_debugfs.c - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
i915_debugfs.h drm/i915: have *_debugfs_init() functions return void. 2020-03-18 16:27:22 +01:00
i915_debugfs_params.c drm/i915/params: switch to device specific parameters 2020-06-22 23:26:40 +03:00
i915_debugfs_params.h
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i915_drv.c drm/i915: Disable RPM wakeref assertions during driver shutdown 2021-01-08 20:32:49 +00:00
i915_drv.h - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
i915_fixed.h
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i915_gem.c drm/i915/gem: Pull phys pread/pwrite implementations to the backend 2020-11-12 19:47:30 -05:00
i915_gem.h drm/i915: Use per object locking in execbuf, v12. 2020-09-07 14:30:07 +03:00
i915_gem_evict.c drm: fix some kernel-doc markups 2020-11-16 20:48:20 +01:00
i915_gem_gtt.c drm/i915: Update dma-attributes for our sg DMA 2020-07-07 11:00:47 +01:00
i915_gem_gtt.h drm/i915: Remove PIN_UPDATE for i915_vma_pin 2020-05-21 17:33:51 +01:00
i915_getparam.c drm/i915: add syncobj timeline support 2020-08-17 16:16:51 -04:00
i915_globals.c
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i915_globals.h
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i915_gpu_error.c Merge tag 'drm-intel-gt-next-2020-11-12-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2020-11-13 15:01:57 +10:00
i915_gpu_error.h drm/i915: Improve record of hung engines in error state 2020-11-09 11:59:43 +00:00
i915_ioc32.c i915 compat ioctl(): just use drm_ioctl_kernel() 2020-05-01 20:35:26 -04:00
i915_ioc32.h drm/i915: add i915_ioc32.h for compat 2020-03-02 13:32:37 +02:00
i915_irq.c - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
i915_irq.h drm/i915: Add enable/disable flip done and flip done handler 2020-09-28 14:12:48 +03:00
i915_memcpy.c drm/i915: remove always-defined CONFIG_AS_MOVNTDQA 2020-04-09 00:01:59 +09:00
i915_memcpy.h
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i915_mm.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
i915_params.c drm/i915: Initial implementation of PSR2 selective fetch 2020-08-17 16:17:15 -04:00
i915_params.h drm/i915: Initial implementation of PSR2 selective fetch 2020-08-17 16:17:15 -04:00
i915_pci.c Merge tag 'drm-intel-gt-next-2020-11-12-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2020-11-13 15:01:57 +10:00
i915_perf.c drm/i915/perf: also include Gen11 in OATAILPTR workaround 2020-12-18 12:27:02 +02:00
i915_perf.h
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i915_perf_types.h drm/i915/perf: Schedule oa_config after modifying the contexts 2020-03-30 18:20:34 +01:00
i915_pmu.c A treewide cleanup of interrupt descriptor (ab)use with all sorts of racy 2020-12-24 13:50:23 -08:00
i915_pmu.h A treewide cleanup of interrupt descriptor (ab)use with all sorts of racy 2020-12-24 13:50:23 -08:00
i915_priolist_types.h drm/i915/gt: Prevent timeslicing into unpreemptable requests 2020-06-16 11:34:23 +03:00
i915_pvinfo.h
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i915_query.c drm/i915/sseu: Move sseu_info under gt_info 2020-07-08 21:13:09 +01:00
i915_query.h
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i915_reg.h - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
i915_request.c irq_work: Cleanup 2020-11-24 16:47:48 +01:00
i915_request.h drm/i915/gt: Split the breadcrumb spinlock between global and contexts 2020-12-02 17:05:58 -08:00
i915_scatterlist.c
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i915_scatterlist.h Merge tag 'drm-intel-gt-next-2020-11-12-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2020-11-13 15:01:57 +10:00
i915_scheduler.c drm/i915: Don't set queue-priority hint when supressing the reschedule 2020-05-25 15:40:26 +03:00
i915_scheduler.h drm/i915: Mark concurrent submissions with a weak-dependency 2020-05-11 10:54:04 -07:00
i915_scheduler_types.h drm/i915: Drop no-semaphore boosting 2020-05-14 06:14:33 +01:00
i915_selftest.h drm/i915/gem: Implement legacy MI_STORE_DATA_IMM 2020-05-04 15:15:04 +01:00
i915_suspend.c drm/i915/suspend: replace I915_READ()/WRITE() with intel_de_read()/write() 2020-12-01 17:56:36 +02:00
i915_suspend.h drm/i915: Rename i915_{save,restore}_state() 2020-10-09 21:12:13 +03:00
i915_sw_fence.c treewide: Make all debug_obj_descriptors const 2020-09-24 21:56:25 +02:00
i915_sw_fence.h
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i915_sw_fence_work.c drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_sw_fence_work.h drm/i915: Immediately execute the fenced work 2020-03-25 13:05:04 +00:00
i915_switcheroo.c drm/i915/switcheroo: use struct drm_device based logging 2020-04-08 13:49:35 +03:00
i915_switcheroo.h
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i915_syncmap.c
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i915_syncmap.h
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i915_sysfs.c drm/i915/gt: Expose engine properties via sysfs 2020-02-28 22:03:19 +00:00
i915_sysfs.h
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i915_trace.h drm/i915: Drop i915_request.i915 backpointer 2020-06-03 13:53:39 +01:00
i915_trace_points.c
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i915_user_extensions.c
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i915_user_extensions.h
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i915_utils.c drm/i915: Don't taint when using fault injection 2020-07-06 19:21:07 +01:00
i915_utils.h drm/i915: Remove unused inline function drain_delayed_work() 2020-07-15 10:16:44 +01:00
i915_vgpu.c drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vgpu.h drm/i915/vgpu: improve vgpu abstractions 2020-03-03 17:46:54 +02:00
i915_vma.c drm/i915: Hold onto an explicit ref to i915_vma_work.pinned 2020-11-03 19:22:42 -05:00
i915_vma.h drm/i915: Make sure execbuffer always passes ww state to i915_vma_pin. 2020-09-07 14:31:13 +03:00
i915_vma_types.h drm/i915: Export ppgtt_bind_vma 2020-07-03 15:14:35 +01:00
intel_device_info.c drm/i915: remove trailing semicolon in macro definition 2020-11-27 19:25:47 +00:00
intel_device_info.h drm/i915/jsl: Split EHL/JSL platform info and PCI ids 2020-10-14 09:31:34 +02:00
intel_dram.c drm/i915: Read DIMM size in Gb rather than GB 2020-09-30 13:32:05 -07:00
intel_dram.h drm/i915: split out intel_dram.[ch] from i915_drv.c 2020-02-27 09:16:01 +02:00
intel_gvt.c drm/i915/gvt: Save/restore HW status to support GVT suspend/resume 2020-11-10 14:37:56 +08:00
intel_gvt.h drm/i915/gvt: Save/restore HW status to support GVT suspend/resume 2020-11-10 14:37:56 +08:00
intel_memory_region.c drm/i915/region: fix order when adding blocks 2020-11-09 13:38:41 +00:00
intel_memory_region.h
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intel_pch.c drm/i915/jsl: Split EHL/JSL platform info and PCI ids 2020-10-14 09:31:34 +02:00
intel_pch.h drm/i915/dg1: Add fake PCH 2020-07-14 02:47:21 -07:00
intel_pm.c - Display hotplug fix for gen2/gen3 (Chris) 2021-01-07 12:20:29 +01:00
intel_pm.h drm/i915: Make intel_{enable,disable}_sagv() static 2020-09-28 14:12:50 +03:00
intel_region_lmem.c drm/i915/params: switch to device specific parameters 2020-06-22 23:26:40 +03:00
intel_region_lmem.h
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intel_runtime_pm.c Merge drm/drm-next into drm-intel-next-queued 2020-06-25 18:05:03 +03:00
intel_runtime_pm.h
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intel_sideband.c drm/i915: remove last traces of I915_READ(), I915_WRITE() and POSTING_READ() 2020-12-02 17:29:46 +02:00
intel_sideband.h drm/i915/dg1: Wait for pcode/uncore handshake at startup 2020-10-05 15:54:45 -07:00
intel_uncore.c drm/i915: remove last traces of I915_READ(), I915_WRITE() and POSTING_READ() 2020-12-02 17:29:46 +02:00
intel_uncore.h drm/i915: remove last traces of I915_READ(), I915_WRITE() and POSTING_READ() 2020-12-02 17:29:46 +02:00
intel_wakeref.c drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wakeref.h drm/i915: Extend intel_wakeref to support delayed puts 2020-03-23 12:51:05 +00:00
intel_wopcm.c drm/i915: Remove cnl pre-prod workarounds 2020-05-04 18:44:52 +03:00
intel_wopcm.h
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vlv_suspend.c
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vlv_suspend.h
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