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linux/drivers/gpu/drm/i915
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Daniel Vetter b1289371fc Revert "drm/i915: write backlight harder" 
This reverts commit cf0a6584aa.

Turns out that cargo-culting breaks systems. Note that we can't revert
further, since

commit 770c12312a
Author: Takashi Iwai <tiwai@suse.de>
Date:   Sat Aug 11 08:56:42 2012 +0200

    drm/i915: Fix blank panel at reopening lid

fixed a regression in 3.6-rc kernels for which we've never figured out
the exact root cause. But some further inspection of the backlight
code reveals that it's seriously lacking locking. And especially the
asle backlight update is know to get fired (through some smm magic)
when writing specific backlight control registers. So the possibility
of suffering from races is rather real.

Until those races are fixed I don't think it makes sense to try
further hacks. Which sucks a bit, but sometimes that's how it is :(

References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47941
Tested-by: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: stable@vger.kernel.org (the reverted commit was cc: stable, too)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
 		2013-03-24 13:23:20 +01:00
..
Makefile drm/i915: extract ums suspend/resume into i915_ums.c 2013-01-31 11:50:03 +01:00
dvo.h Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-10-03 23:29:23 -07:00
dvo_ch7xxx.c drm/i915/dvo-ch7xxx: fix get_hw_state 2012-10-12 10:59:11 +02:00
dvo_ch7017.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ivch.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_ns2501.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_sil164.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
dvo_tfp410.c drm/i915/dvo: implement get_hw_state 2012-09-06 07:58:52 +02:00
i915_debugfs.c drm/i915: restrict kernel address leak in debugfs 2013-03-13 21:31:02 +01:00
i915_dma.c i915: ignore lid open event when resuming 2013-02-14 00:47:51 +01:00
i915_drv.c drm/i915: don't disable the power well yet 2013-03-24 13:22:33 +01:00
i915_drv.h drm/i915: don't disable the power well yet 2013-03-24 13:22:33 +01:00
i915_gem.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
i915_gem_context.c drm/i915: convert to idr_alloc() 2013-02-27 19:10:16 -08:00
i915_gem_debug.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
i915_gem_dmabuf.c Merge tag 'drm-intel-next-2012-12-21' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-01-17 20:34:08 +10:00
i915_gem_evict.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
i915_gem_execbuffer.c drm/i915: bounds check execbuffer relocation count 2013-03-13 21:31:03 +01:00
i915_gem_gtt.c drm/i915: Fix gen2 mappable calculations 2013-02-15 10:30:38 +01:00
i915_gem_stolen.c drm/i915: remove intel_gtt structure 2013-01-31 11:50:07 +01:00
i915_gem_tiling.c drm/i915: Create a gtt structure 2013-01-17 22:33:56 +01:00
i915_ioc32.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
i915_irq.c drm/i915: also disable south interrupts when handling them 2013-03-05 20:06:22 +01:00
i915_reg.h drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits 2013-03-06 10:10:37 +01:00
i915_suspend.c drm/i915: Introduce i915_vgacntrl_reg() 2013-01-31 11:50:12 +01:00
i915_sysfs.c drm/i915: fixup l3 parity sysfs access check 2012-12-05 19:10:20 +01:00
i915_trace.h drm/i915: Allow DRM_ROOT_ONLY|DRM_MASTER to submit privileged batchbuffers 2012-10-17 21:06:59 +02:00
i915_trace_points.c drm/i915: [sparse] trivial sparse fixes 2012-04-18 10:34:49 +02:00
i915_ums.c drm/i915: move DP save/restore into i915_ums.c 2013-01-31 11:50:04 +01:00
intel_acpi.c UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
intel_bios.c Merge branch 'drm-next-3.8' of git://people.freedesktop.org/~agd5f/linux into drm-next 2012-12-10 20:03:58 +10:00
intel_bios.h UAPI: (Scripted) Convert #include "..." to #include <path/...> in drivers/gpu/ 2012-10-02 18:01:07 +01:00
intel_crt.c Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-03-07 11:12:14 +10:00
intel_ddi.c Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-03-07 11:12:14 +10:00
intel_display.c Revert "drm/i915: set TRANSCODER_EDP even earlier" 2013-03-24 13:22:32 +01:00
intel_dp.c drm/i915: Use the fixed pixel clock for eDP in intel_dp_set_m_n() 2013-03-18 11:25:36 +01:00
intel_drv.h Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-02-24 12:39:02 +10:00
intel_dvo.c drm/i915: rip out helper->disable noop functions 2013-02-14 00:07:54 +01:00
intel_fb.c drm/<drivers>: simplify ->fb_probe callback 2013-02-14 00:07:58 +01:00
intel_hdmi.c Merge branch 'drm/hdmi-for-3.9' of git://anongit.freedesktop.org/tegra/linux into drm-next 2013-02-24 12:39:42 +10:00
intel_i2c.c drm/i915: stop using GMBUS IRQs on Gen4 chips 2013-03-20 00:03:16 +01:00
intel_lvds.c Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-02-20 11:41:26 +10:00
intel_modes.c drm/i915: Add "Automatic" mode for the "Broadcast RGB" property 2013-01-20 13:09:44 +01:00
intel_opregion.c GPU/i915: Fix acpi_bus_get_device() check in drivers/gpu/drm/i915/intel_opregion.c 2013-02-01 11:01:50 +01:00
intel_overlay.c Merge tag 'drm-intel-next-2013-02-01' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-02-08 11:08:10 +10:00
intel_panel.c Revert "drm/i915: write backlight harder" 2013-03-24 13:23:20 +01:00
intel_pm.c drm/i915: don't disable the power well yet 2013-03-24 13:22:33 +01:00
intel_ringbuffer.c drm/i915: Fix PIPE_CONTROL DW/QW write through global GTT on IVB+ 2013-02-20 00:21:47 +01:00
intel_ringbuffer.h Merge tag 'drm-intel-next-2012-12-21' of git://people.freedesktop.org/~danvet/drm-intel into drm-next 2013-01-17 20:34:08 +10:00
intel_sdvo.c drm: Remove duplicate drm_mode_cea_vic() 2013-02-22 08:19:53 +01:00
intel_sdvo_regs.h drm/i915: clear the entire sdvo infoframe buffer 2012-10-24 15:12:48 +02:00
intel_sprite.c drm/i915: Handle untiled planes when computing their offsets 2013-02-21 21:52:08 +01:00
intel_tv.c drm/i915: rip out helper->disable noop functions 2013-02-14 00:07:54 +01:00