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linux/drivers/gpu/drm/i915/display
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Ville Syrjälä f77021372e drm/i915: Preload LUTs if the hw isn't currently using them 
The LUTs are single buffered so in order to program them without
tearing we'd have to do it during vblank (actually to be 100%
effective it has to happen between start of vblank and frame start).
We have no proper mechanism for that at the moment so we just
defer loading them after the vblank waits have happened. That
is not quite sufficient (especially when committing multiple pipes
whose vblanks don't line up) so the LUT load will often leak into
the following frame causing tearing.

However in case the hardware wasn't previously using the LUT we
can preload it before setting the enable bit (which is double
buffered so won't tear). Let's determine if we can do such
preloading and make it happen. Slight variation between the
hardware requires some platforms specifics in the checks.

Hans is seeing ugly colored flash on VLV/CHV macchines (GPD win
and Asus T100HA) when the gamma LUT gets loaded for the first
time as the BIOS has left some junk in the LUT memory.

v2: Deal with uapi vs. hw crtc state split
    s/GCM/CGM/ typo fix

Cc: Hans de Goede <hdegoede@redhat.com>
Fixes: 051a6d8d3c ("drm/i915: Move LUT programming to happen after vblank waits")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030190815.7359-1-ville.syrjala@linux.intel.com
Tested-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
(cherry picked from commit 0ccc42a2fd)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2019-11-11 11:44:43 +02:00
..
dvo_ch7xxx.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
dvo_ch7017.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
dvo_ivch.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
dvo_ns2501.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
dvo_sil164.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
dvo_tfp410.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
icl_dsi.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_acpi.c
intel_acpi.h
intel_atomic_plane.c drm/i915: Allow planes to declare their minimum acceptable cdclk 2019-10-24 21:22:25 +03:00
intel_atomic_plane.h drm/i915: Allow planes to declare their minimum acceptable cdclk 2019-10-24 21:22:25 +03:00
intel_atomic.c drm/i915: Preload LUTs if the hw isn't currently using them 2019-11-11 11:44:43 +02:00
intel_atomic.h drm/i915: Rework global state locking 2019-10-24 21:22:25 +03:00
intel_audio.c drm/i915: Rework global state locking 2019-10-24 21:22:25 +03:00
intel_audio.h
intel_bios.c drm/i915/tgl: Enable DDI/Port G 2019-10-16 16:53:27 -07:00
intel_bios.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
intel_bw.c drm/i915/tgl: Add memory type decoding for bandwidth checking 2019-09-25 15:52:08 -07:00
intel_bw.h drm/i915/bw: make intel_atomic_get_bw_state() static 2019-08-07 12:01:46 +03:00
intel_cdclk.c drm/i915: Allow planes to declare their minimum acceptable cdclk 2019-10-24 21:22:25 +03:00
intel_cdclk.h drm/i915: Extract intel_modeset_calc_cdclk() 2019-09-16 14:51:09 +03:00
intel_color.c drm/i915: Preload LUTs if the hw isn't currently using them 2019-11-11 11:44:43 +02:00
intel_color.h drm/i915/display: Add func to compare hw/sw gamma lut 2019-09-04 11:55:30 +03:00
intel_combo_phy.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_combo_phy.h drm/i915/gen11: Convert combo PHY logic to use new 'enum phy' namespace 2019-07-10 18:22:34 -07:00
intel_connector.c drm/i915/dp: Attach colorspace property 2019-10-15 16:24:59 +03:00
intel_connector.h
intel_crt.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_crt.h
intel_ddi.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_ddi.h drm/i915/dp: Add support of BT.2020 Colorimetry to DP MSA 2019-10-15 16:24:59 +03:00
intel_display_power.c drm/i915/tgl: Add AUX B & C to DC_OFF_POWER_DOMAINS 2019-10-29 10:50:34 -07:00
intel_display_power.h drm/i915/tgl: Switch between dc3co and dc5 based on display idleness 2019-10-08 11:05:28 +03:00
intel_display_types.h drm/i915: Preload LUTs if the hw isn't currently using them 2019-11-11 11:44:43 +02:00
intel_display.c drm/i915: Preload LUTs if the hw isn't currently using them 2019-11-11 11:44:43 +02:00
intel_display.h drm/i915/display: only include intel_dp_link_training.h where needed 2019-11-11 10:29:57 +02:00
intel_dp_aux_backlight.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_dp_aux_backlight.h
intel_dp_link_training.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_dp_link_training.h
intel_dp_mst.c Merge tag 'drm-intel-next-2019-11-01-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2019-11-04 09:57:28 +10:00
intel_dp_mst.h drm/i915/mst: un-inline intel_dp_mst_encoder_active_links() 2019-08-07 12:01:51 +03:00
intel_dp.c Merge tag 'drm-intel-next-2019-11-01-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next 2019-11-04 09:57:28 +10:00
intel_dp.h drm/i915/dp: Program an Infoframe SDP Header and DB for HDR Static Metadata 2019-10-15 16:24:59 +03:00
intel_dpio_phy.c drm/i915: Wrappers for display register waits 2019-08-16 22:19:05 +01:00
intel_dpio_phy.h
intel_dpll_mgr.c drm/i915: Fix PCH reference clock for FDI on HSW/BDW 2019-10-25 20:17:11 +03:00
intel_dpll_mgr.h drm/i915: Describe structure member in documentation 2019-10-25 12:06:26 +01:00
intel_dsb.c drm/i915: Pull i915_vma_pin under the vm->mutex 2019-10-04 15:39:02 +01:00
intel_dsb.h drm/i915/dsb: function to trigger workload execution of DSB. 2019-09-23 10:12:26 +03:00
intel_dsi_dcs_backlight.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_dsi_dcs_backlight.h
intel_dsi_vbt.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_dsi.c drm/i915: Don't advertise modes that exceed the max plane size 2019-09-19 20:28:57 +03:00
intel_dsi.h drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_dvo_dev.h
intel_dvo.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_dvo.h
intel_fbc.c drm/i915: Disable FBC if BIOS reserved memory (stolen) is unavailable 2019-09-12 11:43:48 +01:00
intel_fbc.h
intel_fbdev.c drm/i915/stolen: make the object creation interface consistent 2019-10-04 19:27:41 +01:00
intel_fbdev.h
intel_fifo_underrun.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_fifo_underrun.h
intel_frontbuffer.c drm/i915: Coordinate i915_active with its own mutex 2019-10-04 15:39:12 +01:00
intel_frontbuffer.h drm/i915: Extract intel_frontbuffer active tracking 2019-08-16 09:51:11 +01:00
intel_gmbus.c drm/i915: introduce INTEL_DISPLAY_ENABLED() 2019-09-16 10:20:05 +03:00
intel_gmbus.h drm/i915: Move gmbus definitions out of i915_reg.h 2019-08-16 21:52:49 +01:00
intel_hdcp.c drm/i915/display: Handle fused off HDCP 2019-10-29 12:12:45 -07:00
intel_hdcp.h drm/i915/hdcp: update current transcoder into intel_hdcp 2019-08-30 14:08:30 +05:30
intel_hdmi.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_hdmi.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
intel_hotplug.c drm/i915: Prefer encoder->name over port_name() 2019-09-02 18:43:28 +03:00
intel_hotplug.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
intel_lpe_audio.c drm/i915: add INTEL_NUM_PIPES() and use it 2019-09-11 22:33:20 +03:00
intel_lpe_audio.h
intel_lspcon.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_lspcon.h
intel_lvds.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_lvds.h
intel_opregion.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_opregion.h
intel_overlay.c drm/i915/gt: Split intel_ring_submission 2019-10-24 12:14:21 +01:00
intel_overlay.h
intel_panel.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_panel.h
intel_pipe_crc.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_pipe_crc.h
intel_psr.c drm/i915: Use _PICK() for CHICKEN_TRANS() 2019-10-28 12:47:55 +02:00
intel_psr.h drm/i915: Do not unmask PSR interruption in IRQ postinstall 2019-08-22 13:09:24 -07:00
intel_quirks.c drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
intel_quirks.h
intel_sdvo_regs.h
intel_sdvo.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_sdvo.h drm: Move port definition back to i915 header 2019-08-30 14:08:26 +05:30
intel_sprite.c drm/i915: Add support for half float framebuffers on snb sprites 2019-10-24 21:22:26 +03:00
intel_sprite.h drm/i915: Allow planes to declare their minimum acceptable cdclk 2019-10-24 21:22:25 +03:00
intel_tc.c drm/i915/tc: Update DP_MODE programming 2019-09-27 10:40:17 -07:00
intel_tc.h drm/i915/tc: Update DP_MODE programming 2019-09-27 10:40:17 -07:00
intel_tv.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00
intel_tv.h
intel_vbt_defs.h drm/i915/bios: add compression parameter block definition 2019-10-28 13:34:30 +02:00
intel_vdsc.c drm/i915/dsc: move crtc state dp_dsc_cfg member under dsc as config 2019-10-23 16:28:29 +03:00
intel_vdsc.h
intel_vga.c drm/i915/vga: rename intel_vga_msr_write() to intel_vga_reset_io_mem() 2019-10-06 11:24:53 +03:00
intel_vga.h drm/i915/vga: rename intel_vga_msr_write() to intel_vga_reset_io_mem() 2019-10-06 11:24:53 +03:00
Makefile drm/i915: use upstream version of header tests 2019-07-30 12:11:57 +03:00
vlv_dsi_pll.c drm/i915: Wrappers for display register waits 2019-08-16 22:19:05 +01:00
vlv_dsi.c drm/i915: Simplify pipe_mask setup even further 2019-10-31 16:08:11 +02:00