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7bd90909bb
linux/drivers/gpu/drm/i915
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Carsten Emde 7bd90909bb drm/i915: panel: invert brightness via parameter 
Following the documentation of the Legacy Backlight Brightness (LBB)
Register in the configuration space of some Intel PCI graphics adapters,
setting the LBB register with the value 0x0 causes the backlight to be
turned off, and 0xFF causes the backlight to be set to 100% intensity
(http://download.intel.com/embedded/processors/Whitepaper/324567.pdf).
The Acer Aspire 5734Z, however, turns the backlight off at 0xFF and sets
it to maximum intensity at 0. In consequence, the screen of this systems
becomes dark at an early boot stage which makes it unusable. The same
inversion applies to the BLC_PWM_CTL I915 register. This problem was
introduced in kernel version 2.6.38 when the PCI device of this system
was first supported by the i915 KMS module.

This patch adds a parameter to the i915 module to enable inversion of
the brightness variable (i915.invert_brightness).

Signed-off-by: Carsten Emde <C.Emde@osadl.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-03-18 21:47:46 +01:00
..
dvo_ch7xxx.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
dvo_ch7017.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
dvo_ivch.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
dvo_sil164.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
dvo_tfp410.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
dvo.h drm/i915: Subclass intel_encoder. 2010-08-09 11:24:28 -07:00
i915_debugfs.c drm/i915: Record the position of the request upon error 2012-02-15 14:27:18 +01:00
i915_dma.c drm/i915: Don't do MTRR setup if PAT is enabled 2012-03-18 18:48:10 +01:00
i915_drv.c i915: Add option to bypass vbt table. 2012-03-01 23:22:30 +01:00
i915_drv.h drm/i915: i2c: unconditionally set up gpio fallback 2012-02-29 20:53:36 +01:00
i915_gem_debug.c drm/i915: drop KM_USER0 argument to k(un)map_atomic 2011-10-20 15:26:37 -07:00
i915_gem_evict.c drm/i915: No need to search again after retiring requests 2012-02-27 17:37:13 +01:00
i915_gem_execbuffer.c Merge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next 2012-02-14 14:16:00 +00:00
i915_gem_gtt.c drm/i915: ppgtt binding/unbinding support 2012-02-09 21:25:23 +01:00
i915_gem_tiling.c drm/i915: swizzling support for snb/ivb 2012-02-08 23:16:24 +01:00
i915_gem.c drm/i915: Only clear the GPU domains upon a successful finish 2012-03-01 21:36:13 +01:00
i915_ioc32.c drm: convert drm_ioctl to unlocked_ioctl 2009-12-18 11:22:31 +10:00
i915_irq.c drm/i915: Record the position of the request upon error 2012-02-15 14:27:18 +01:00
i915_reg.h drm/i915: add missing SDVO bits for interlaced modes on ILK 2012-02-14 20:32:29 +01:00
i915_suspend.c drm/i915: Re-enable gen7 RC6 and GPU turbo after resume. 2012-01-24 13:25:10 -08:00
i915_trace_points.c drm/i915: Add tracepoints 2009-09-23 01:05:21 +01:00
i915_trace.h Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
intel_acpi.c drm/i915: remove ACPI related DRM_ERRORs 2012-03-02 19:23:44 +01:00
intel_bios.c i915: Add option to bypass vbt table. 2012-03-01 23:22:30 +01:00
intel_bios.h drm/i915: VBT Parser cleanup for eDP block 2012-01-13 08:37:44 -08:00
intel_crt.c drm/i915: don't allow interlaced pipeconf on gen2 2012-02-10 17:28:45 +01:00
intel_display.c drm/i915: Retry reading the PCH FDI receiver ISR 2012-03-02 19:39:39 +01:00
intel_dp.c drm/i915: use the new hdmi_force_audio enum more 2012-02-27 17:45:36 +01:00
intel_drv.h drm/i915: Separate fence pin counting from normal bind pin counting 2012-01-29 18:23:37 +01:00
intel_dvo.c drm/i915: fixup interlaced vertical timings confusion, part 1 2012-02-10 17:24:06 +01:00
intel_fb.c drm: do not set fb_info->pixmap fields 2012-02-09 10:34:43 +00:00
intel_hdmi.c drm/i915: add a "force-dvi" HDMI audio mode 2012-02-14 10:03:18 +01:00
intel_i2c.c drm/i915: reenable gmbus on gen3+ again 2012-02-29 20:54:14 +01:00
intel_lvds.c drm/i915: Ignore LVDS on hp t5745 and hp st5747 thin client 2012-02-27 11:12:38 +01:00
intel_modes.c Merge remote-tracking branch 'airlied/drm-next' into for-airlied 2012-02-23 14:56:11 +01:00
intel_opregion.c Drivers: i915: Fix all space related issues. 2011-09-19 18:01:47 -07:00
intel_overlay.c Revert "drivers/gpu/drm/i915/intel_overlay.c needs seq_file.h" 2012-02-16 10:31:23 +01:00
intel_panel.c drm/i915: panel: invert brightness via parameter 2012-03-18 21:47:46 +01:00
intel_ringbuffer.c drm/i915: Add wait_for in init_ring_common 2012-03-18 19:10:06 +01:00
intel_ringbuffer.h drm/i915: Record the tail at each request and use it to estimate the head 2012-02-15 14:26:03 +01:00
intel_sdvo_regs.h misc latin1 to utf8 conversions 2012-01-02 13:04:55 +01:00
intel_sdvo.c drm/i915: use the new hdmi_force_audio enum more 2012-02-27 17:45:36 +01:00
intel_sprite.c Merge tag 'drm-intel-next-2012-02-07' of git://people.freedesktop.org/~danvet/drm-intel into drm-core-next 2012-02-14 14:16:00 +00:00
intel_tv.c drm/i915: fixup interlaced vertical timings confusion, part 1 2012-02-10 17:24:06 +01:00
Makefile drm/i915: kill i915_mem.c 2012-01-17 20:01:01 +01:00