- 26 Jan, 2021 5 commits
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Ville Syrjälä authored
The dbuf state will be where we collect all the inter-pipe dbuf allocation stuff. Start by adding the actual per-pipe ddb entries there. Originally the plan was to move them there outright, but that no longer works as we're no longer guaranteed to have a dbuf state when it comes time to sanity check the ddb overlaps in skl_commit_modeset_enables(). I think when I wrote this originally we did the watermark/ddb calculation last, and so we couldn't have any crtcs in the state w/o also having the dbuf state. But that has since changed and we do the watermark/ddb calculation much earlier, and thus it is now possible to commit crtcs w/o a dbuf state. So we keep another copy of the information in the crtc state. v2: Rebase v3: Duplicate the entries instead of moving Reviewed-by:
Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210122205633.18492-6-ville.syrjala@linux.intel.com
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Ville Syrjälä authored
Generalize icl_get_first_dbuf_slice_offset() into something that just gives us the start+end of the dbuf chunk covered by the specified slices as a standard ddb entry. Initial idea was to use it during readout as well, but we shall see. Reviewed-by:
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Ville Syrjälä authored
Put the code into a function with a descriptive name. Also relocate the code a bit help future work. Reviewed-by:
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Ville Syrjälä authored
skl_compute_dbuf_slices() has no use for the crtc state, so just pass the crtc itself. Reviewed-by:
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Ville Syrjälä authored
skl_ddb_get_pipe_allocation_limits() doesn't care how the weights for distributing the ddb are caclculated for each pipe. Put that calculation into a separate function so that such mundane details are hidden from view. v2: s/adjusted_mode/pipe_mode/ Reviewed-by:
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- 25 Jan, 2021 18 commits
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Ville Syrjälä authored
With vrr enabled the hardware no longer latches the registers automagically at vblank start. The point at which it will do the latching even when no push has been sent is the vmax decision boundary. That is the thing we need to evade to avoid our register latching to get split between two frames. Signed-off-by:
Manasi Navare <manasi.d.navare@intel.com> Reviewed-by:
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Ville Syrjälä authored
To get sensible vblank timestamping behaviour we need to feed the vmax based timings to the vblank code, otherwise it'll chop off the scanline counter when it exceeds the minumum vtotal. Additionally with VRR we have three cases to consider when we generate the vblank timestamp: 1) we are in vertical active -> nothing special needs to be done, just return the current scanout position and the core will calculate the timestamp corresponding to the past time when the current vertical active started 2) we are in vertical blank and no push has been sent -> the hardware will keep extending the vblank presumably to its maximum length, so we make the timestmap match the expected time when the max length vblank will end. Since the timings used for this are now based on vmax nothing special actually needs to be done 3) we are in vblank and a push has been sent so the vblank is about to terminate -> presumably we want the timestmap to accurately reflect when the vblank will terminate, so we use the sampled frame timestamp vs. current timestamp to guesstimate how far along the vblank exit we are, and then we adjust the reported scanout position accordingly so that the core will see that the vblank is close to ending. v2: * Fix the else if (use_scanline_Counter) (Manasi) Signed-off-by: -
Ville Syrjälä authored
Dump vrr state alongside everything else. Signed-off-by:
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Ville Syrjälä authored
With VRR the earliest the registers can get latched are at flipline decision boundary, calculate that as vrr_vmin_vblank_start() and the latest the regsiters can get latched are vmax decision boundary calculate that as vrr_vmax_vblank_start() v2: * Remove TODO and adjust extra scanline const (Manasi) Signed-off-by:
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Manasi Navare authored
This functions gets the VRR config from the VRR registers to match the crtc state variables for VRR. v2: * Rebase (Manasi) * Use HAS_VRR (Jani N) v3: * Get pipeline_full, flipline (Ville) Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
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Manasi Navare authored
If VRR is enabled, the sink should ignore MSA parameters and regenerate incoming video stream without depending on these parameters. Hence set the MSA_TIMING_PAR_IGNORE_EN bit if VRR is enabled. Reset this bit on VRR disable. v2: * ACtually set the dpcd msa ignore bit (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
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Manasi Navare authored
This patch disables the VRR enable and VRR PUSH bits in the HW during commit modeset disable sequence. Thsi disable will happen when the port is disabled or when the userspace sets VRR prop to false and requests to disable VRR. v2: * Use intel_de_rmw (Jani N) v3: * Remove rmw (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Manasi Navare authored
VRR achieves vblank stretching using the HW PUSH functionality. So once the VRR is enabled during modeset then for each flip request from userspace, in the atomic tail pipe_update_end() we need to set the VRR push bit in HW for it to terminate the vblank at configured flipline or anytime after flipline or latest at the Vmax. The HW clears the PUSH bit after the double buffer updates are completed. v2: * Move send push to after irq en (Manasi) * Call send push unconditionally (Jani N) v3: * Stall w.r.t Vrr vmax (Manasi, Gary Smith) v4: * Remove the rmw (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Gary Smith <gary.k.smith@intel.com> Signed-off-by:
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Manasi Navare authored
This patch computes the VRR parameters from VRR crtc states and configures them in VRR registers during CRTC enable in the modeset enable sequence. v2: * Remove initialization to 0 (Jani N) * Use correct pipe %c (Jani N) v3: * Remove debug prints (Ville) * Use cpu_trans instead of pipe for TRANS_VRR regs (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Ville Syrjälä authored
Give the pipeline full line count bits more descriptive names Signed-off-by:
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Ville Syrjälä authored
If VRR is enabled, DRRS cannot be enabled, so make this check in atomic check. Signed-off-by:
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Manasi Navare authored
Even though our HW supports PSR + VRR, the available panels do not work reliably with PSR and VRR together. So if user requested VRR and is supported by HW enable that and do not enable PSR in that case. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> Cc: Imre Deak <imre.deak@intel.com> Signed-off-by:
Gwan-gyeong Mun <gwan-gyeong.mun@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210122232647.22688-7-manasi.d.navare@intel.com
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Manasi Navare authored
This forces a complete modeset if vrr drm crtc state goes from enabled to disabled and vice versa. This patch also computes vrr state variables from the mode timings and based on the vrr property set by userspace as well as hardware's vrr capability. v2: *Rebase v3: * Vmin = max (vtotal, vmin) (Manasi) v4: * set crtc_state->vrr.enable = 0 for disable request v5: * drm_dbg_kms, squash crtc states def patch (Jani N) v6: * Move vrr modeset check to separate function (Jani N) v7: * Ville's fixes - vmin, vmax rename, fix rounding dir * Add pipeline full, flipline to crtc state * Pass conn state to vrr_compute_config (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
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Ville Syrjälä authored
Extract intel_crtc_scanlines_since_frame_timestamp() from __intel_get_crtc_scanline_from_timestamp(). We'll reuse this for VRR vblank timestamps. Signed-off-by:
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Ville Syrjälä authored
We want to calculate the vblank_start for vblank evasion differently for vrr. To make that nicer lets first extract the current non-vrr case to a helper. Signed-off-by:
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Ville Syrjälä authored
The vrr calculations will need to know the framestart delay value we use. Currently we program it always to zero, but should that change we probably want to stash it somewhere. Could stick it into the crtc_state I suppose, but since we never change it let's just stuff it into dev_priv for now. v2: * Rebase on drm-tip (Manasi) v3: * Framestart_delay as 1 - 4 to align with HW Signed-off-by:
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Aditya Swarup authored
This function sets the VRR property for connector based on the platform support, EDID monitor range and DP sink DPCD capability of outputing video without msa timing information. v8: * Use HAS_VRR, remove drm_conn declaration (Jani N) * Fix typos in Comment (Jani N) v7: * Move the helper to separate file (Manasi) v6: * Remove unset of prop v5: * Fix the vrr prop not being set in kernel (Manasi) * Unset the prop on connector disconnect (Manasi) v4: * Rebase (Mansi) v3: * intel_dp_is_vrr_capable can be used for debugfs, make it non static (Manasi) v2: * Just set this in intel_dp_get_modes instead of new hook (Jani) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
Aditya Swarup <aditya.swarup@intel.com> Signed-off-by:
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Manasi Navare authored
We create a new file for all VRR related helpers. Also add a function to check vrr capability based on platform support, DPCD bits and EDID monitor range. v2: * Remove author (Jani N) * Define HAS_VRR (Jani N) * Ensure intel_dp can be obtained from conn (Jani N) v3: * Fix the header indent (Manasi) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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- 22 Jan, 2021 6 commits
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Radhakrishna Sripada authored
Render Decompression is supported with Y-Tiled main surface. The CCS is linear and has 4 bits of data for each main surface cache line pair, a ratio of 1:256. Additional Clear Color information is passed from the user-space through an offset in the GEM BO. Add a new modifier to identify and parse new Clear Color information and extend Gen12 render decompression functionality to the newly added modifier. v2: Fix has_alpha flag for modifiers, omit CC modifier during initial plane config(Matt). Fix Lookup error. v3: Fix the panic while running kms_cube v4: Add alignment check and reuse the comments for ge12_ccs_formats(Matt) v5: Fix typos and wrap comments(Matt) v6: - Use format block descriptors to get the subsampling calculations for the CCS surface right. - Use helpers to convert between main and CCS surfaces. - Prevent coordinate checks for the CC surface. - Simplify reading CC value from surface map, add description of CC val layout. - Remove redundant ccval variable from skl_program_plane(). v7: - Move the CC value readout after syncing against any GPU write on the FB obj (Nanley, Chris) - Make sure the CC value readout works on platforms w/o struct pages (dGFX) and other non-coherent platforms wrt. CPU reads (none atm). (Chris) v8: - Rebase on the function param order change of i915_gem_object_read_from_page(). - Clarify code comment on the clear color value format and the required FB obj pinning/syncing by the caller. - Remove redundant variables in intel_atomic_prepare_plane_clear_colors(). v9: - Fix s/sizeof(&ccval)/sizeof(ccval)/ typo. Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Ville Syrjala <ville.syrjala@intel.com> Cc: Shashank Sharma <shashank.sharma@intel.com> Cc: Rafael Antognolli <rafael.antognolli@intel.com> Cc: Nanley G Chery <nanley.g.chery@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
Radhakrishna Sripada <radhakrishna.sripada@intel.com> Signed-off-by:
Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210115213952.1040398-1-imre.deak@intel.com
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Imre Deak authored
Add a simple helper to read data with the CPU from the page of a GEM object. Do the read either via a kmap if the object has struct pages or an iomap otherwise. This is needed by the next patch, reading a u64 value from the object (w/o requiring the obj to be mapped to the GPU). Suggested by Chris. v2 (Chris): - Sanitize the type and order of func params. - Avoid consts requiring too many casts. - Use BUG_ON instead of WARN_ON, simplify the conditions. - Fix __iomem sparse errors. - Leave locking/syncing/pinning up to the caller, require only that the caller has pinned the object pages. - Check for iomem backing store before reading via an iomap. v3: - Fix offset passed to io_mapping_map_wc() missing a mem.region.start delta. (Chris, Matthew) Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.william.auld@gmail.com> Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20210120213834.1435710-1-imre.deak@intel.com
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Radhakrishna Sripada authored
Gen12 display can decompress surfaces compressed by render engine with Clear Color, add a new modifier as the driver needs to know the surface was compressed by render engine. V2: Description changes as suggested by Rafael. V3: Mention the Clear Color size of 64 bits in the comments(DK) v4: Fix trailing whitespaces v5: Explain Clear Color in the documentation. v6: Documentation Nitpicks(Nanley) Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Kalyan Kondapally <kalyan.kondapally@intel.com> Cc: Rafael Antognolli <rafael.antognolli@intel.com> Cc: Nanley Chery <nanley.g.chery@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by:
Jani Nikula <jani.nikula@intel.com> Acked-by:
Nanley Chery <nanley.g.chery@intel.com> Reviewed-by:
Mika Kahola <mika.kahola@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210114201314.783648-2-imre.deak@intel.com
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Anshuman Gupta authored
Move (num_hdcp_streams > 0) condition to stream_encryption() code block, where it actually belongs. This fixes the static analysis error of uninitialized symbol 'ret'. v2: - return 0 as the return value is already checked. [Ankit] Cc: Ramalingam C <ramalingam.c@intel.com> Reported-by:
kernel test robot <lkp@intel.com> Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Ankit Nautiyal <ankit.k.nautiyal@intel.com> Signed-off-by:
Anshuman Gupta <anshuman.gupta@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210120103032.15198-1-anshuman.gupta@intel.com
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Anshuman Gupta authored
Initialize no. of streams transmitted on a port to zero such that intel_hdcp_required_content_stream() can prepared the content stream after subsequemt attmept to enable hdcp after a HDCP failure. v2: - Initialize k at top level instead of else branch. [Jani] Cc: Ramalingam C <ramalingam.c@intel.com> Signed-off-by:
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Lyude Paul authored
We haven't yet implemented support for backlights that need to be enabled/disabled via PWM instead of AUX, which means we'll break things if we enable DPCD backlight control on these machines. Luckily though since most of these machines work fine just using the plain PWM backlight controls anyway, there shouldn't be any issue with just leaving DPCD backlight controls disabled in such situations. This should fix the issues with PWM being left on that were being observed on fi-bdw-samus. Signed-off-by:
Lyude Paul <lyude@redhat.com> Reviewed-by:
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- 21 Jan, 2021 7 commits
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Ville Syrjälä authored
Get rid of the "I like my random new style best" approach and unify the handling for the DDI buf trans table sanity checks once again. Signed-off-by:
José Roberto de Souza <jose.souza@intel.com>
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Ville Syrjälä authored
The MH PHY vswing table does have all the entries these days. Get rid of the old hacks in the code which claim otherwise. This hack was totally bogus anyway. The correct way to handle the lack of those two entries would have been to declare our max vswing and pre-emph to both be level 2. Cc: José Roberto de Souza <jose.souza@intel.com> Cc: Clinton Taylor <clinton.a.taylor@intel.com> Fixes: 9f7ffa29 ("drm/i915/tc/icl: Update TC vswing tables") Signed-off-by:
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Jani Nikula authored
Commit 7c553f8b ("drm/dp: Revert "drm/dp: Introduce EDID-based quirks"") removed drm_dp_get_edid_quirks() and changed the signature of drm_dp_has_quirk() while they were still being used in msm. Fix the breakage. Functionally, removing the EDID-based quirks has no impact on msm. [The above commit was merged to drm-intel-next; make two wrongs a right by merging this fix through drm-intel-next as well.] Reported-by:
Stephen Rothwell <sfr@canb.auug.org.au> References: http://lore.kernel.org/r/20210120105715.4391dd95@canb.auug.org.au Fixes: 7c553f8b ("drm/dp: Revert "drm/dp: Introduce EDID-based quirks"") Cc: Lyude Paul <lyude@redhat.com> Acked-by:
Fabio Estevam <festevam@gmail.com> Signed-off-by:
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Jani Nikula authored
Split out the DP aux functionality to a new intel_dp_aux.[ch]. This is a surprisingly clean cut. v2: - Remove intel_dp_pack_aux declaration from intel_dp.h (Anshuman) - Fixed some whitespace/comment checkpatch warnings Cc: Anshuman Gupta <anshuman.gupta@intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Jani Nikula authored
Add some namespacing to highlight what belongs where. No functional changes. Cc: Anshuman Gupta <anshuman.gupta@intel.com> Reviewed-by:
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Jani Nikula authored
intel_display.c has some pps functions that belong to intel_pps.c. Move them over. While at it, refactor the duplicate intel_pps_init() in intel_display.c into an orthogonal intel_pps_setup() in intel_pps.c, and call it earlier in intel_modeset_init_nogem(). Reviewed-by:
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Jani Nikula authored
Once you realize there is no need to hold the pps mutex when calling pps_init_timestamps() in intel_pps_init(), we can reuse intel_pps_encoder_reset() which has the same code. Since intel_dp_pps_init() is only called from one place now, move it inline to remove one "init" function altogether. Finally, remove some initialization from vlv_initial_power_sequencer_setup() and do it in the caller to highlight the similarity, not the difference, in the platforms. v2: Fix comment (Anshuman) Reviewed-by:
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- 19 Jan, 2021 4 commits
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Lyude Paul authored
This reverts commit 0883ce81. Originally these quirks were added because of the issues with using the eDP backlight interfaces on certain laptop panels, which made it impossible to properly probe for DPCD backlight support without having a whitelist for panels that we know have working VESA backlight control interfaces over DPCD. As well, it should be noted it was impossible to use the normal sink OUI for recognizing these panels as none of them actually filled out their OUIs, hence needing to resort to checking EDIDs. At the time we weren't really sure why certain panels had issues with DPCD backlight controls, but we eventually figured out that there was a second interface that these problematic laptop panels actually did work with and advertise properly: Intel's proprietary backlight interface for HDR panels. So far the testing we've done hasn't brought any panels to light that advertise this interface and don't support it properly, which means we finally have a real solution to this problem. As a result, we now have no need for the force DPCD backlight quirk, and furthermore this also removes the need for any kind of EDID quirk checking in DRM. So, let's just revert it for now since we were the only driver using this. v3: * Rebase v2: * Fix indenting error picked up by checkpatch in intel_edp_init_connector() Signed-off-by:
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Lyude Paul authored
Since we now support controlling panel backlights through DPCD using both the standard VESA interface, and Intel's proprietary HDR backlight interface, we should allow the user to be able to explicitly choose between one or the other in the event that we're wrong about panels reliably reporting support for the Intel HDR interface. So, this commit adds support for this by introducing two new enable_dpcd_backlight options: 2 which forces i915 to only probe for the VESA interface, and 3 which forces i915 to only probe for the Intel backlight interface (might be useful if we find panels in the wild that report the VESA interface in their VBT, but actually only support the Intel backlight interface). v3: * Rebase Signed-off-by:
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Lyude Paul authored
So-recently a bunch of laptops on the market have started using DPCD backlight controls instead of the traditional DDI backlight controls. Originally we thought we had this handled by adding VESA backlight control support to i915, but the story ended up being a lot more complicated then that. Simply put-there's two main backlight interfaces Intel can see in the wild. Intel's proprietary HDR backlight interface, and the standard VESA backlight interface. Note that many panels have been observed to report support for both backlight interfaces, but testing has shown far more panels work with the Intel HDR backlight interface at the moment. Additionally, the VBT appears to be capable of reporting support for the VESA backlight interface but not the Intel HDR interface which needs to be probed by setting the right magic OUI. On top of that however, there's also actually two different variants of the Intel HDR backlight interface. The first uses the AUX channel for controlling the brightness of the screen in both SDR and HDR mode, and the second only uses the AUX channel for setting the brightness level in HDR mode - relying on PWM for setting the brightness level in SDR mode. For the time being we've been using EDIDs to maintain a list of quirks for panels that safely do support the VESA backlight interface. Adding support for Intel's HDR backlight interface in addition however, should finally allow us to auto-detect eDP backlight controls properly so long as we probe like so: * If the panel's VBT reports VESA backlight support, assume it really does support it * If the panel's VBT reports DDI backlight controls: * First probe for Intel's HDR backlight interface * If that fails, probe for VESA's backlight interface * If that fails, assume no DPCD backlight control * If the panel's VBT reports any other backlight type: just assume it doesn't have DPCD backlight controls Changes since v4: * Fix checkpatch issues Changes since v3: * Stop using drm_device and use drm_i915_private instead * Don't forget to return from intel_dp_aux_hdr_get_backlight() if we fail to read the current backlight mode from the DPCD * s/uint8_t/u8/ * Remove unneeded parenthesis in intel_dp_aux_hdr_enable_backlight() * Use drm_dbg_kms() in intel_dp_aux_init_backlight_funcs() Signed-off-by:
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Lyude Paul authored
Currently, every different type of backlight hook that i915 supports is pretty straight forward - you have a backlight, probably through PWM (but maybe DPCD), with a single set of platform-specific hooks that are used for controlling it. HDR backlights, in particular VESA and Intel's HDR backlight implementations, can end up being more complicated. With Intel's proprietary interface, HDR backlight controls always run through the DPCD. When the backlight is in SDR backlight mode however, the driver may need to bypass the TCON and control the backlight directly through PWM. So, in order to support this we'll need to split our backlight callbacks into two groups: a set of high-level backlight control callbacks in intel_panel, and an additional set of pwm-specific backlight control callbacks. This also implies a functional changes for how these callbacks are used: * We now keep track of two separate backlight level ranges, one for the high-level backlight, and one for the pwm backlight range * We also keep track of backlight enablement and PWM backlight enablement separately * Since the currently set backlight level might not be the same as the currently programmed PWM backlight level, we stop setting panel->backlight.level with the currently programmed PWM backlight level in panel->backlight.pwm_funcs->setup(). Instead, we rely on the higher level backlight control functions to retrieve the current PWM backlight level (in this case, intel_pwm_get_backlight()). Note that there are still a few PWM backlight setup callbacks that do actually need to retrieve the current PWM backlight level, although we no longer save this value in panel->backlight.level like before. Additionally, we drop the call to lpt_get_backlight() in lpt_setup_backlight(), and avoid unconditionally writing the PWM value that we get from it and only write it back if we're in CPU mode, and switching to PCH mode. The reason for this is because in the original codepath for this, it was expected that the intel_panel_bl_funcs->setup() hook would be responsible for fetching the initial backlight level. On lpt systems, the only time we could ever be in PCH backlight mode is during the initial driver load - meaning that outside of the setup() hook, lpt_get_backlight() will always be the callback used for retrieving the current backlight level. After this patch we still need to fetch and write-back the PCH backlight value if we're switching from CPU mode to PCH, but because intel_pwm_setup_backlight() will retrieve the backlight level after setup() using the get() hook, which always ends up being lpt_get_backlight(). Thus - an additional call to lpt_get_backlight() in lpt_setup_backlight() is made redundant. v9: * Drop the intel_panel_invert_pwm_level() call in lpt_setup_backlight() * Remove leftover detritus from lpt_setup_backlight() v8: * Go back to getting initial brightness level with intel_pwm_get_backlight(), the other fix we had was definitely wrong. v7: * Use panel->backlight.pwm_funcs->get() to get the backlight level in intel_pwm_setup_backlight(), lest we upset lockdep * Rebase * Rename intel_panel_sanitize_pwm_level() to intel_panel_invert_pwm_level() v6: * Make sure to grab connection_mutex before calling intel_pwm_get_backlight() in intel_pwm_setup_backlight() v5: * Fix indenting warnings from checkpatch v4: * Fix commit message * Remove outdated comment in intel_panel.c * Rename pwm_(min|max) to pwm_level_(min|max) * Use intel_pwm_get_backlight() in intel_pwm_setup_backlight() instead of indirection * Don't move intel_dp_aux_init_bcklight_funcs() call to bottom of intel_panel_init_backlight_funcs() quite yet v3: * Reuse intel_panel_bl_funcs() for pwm_funcs * Explain why we drop lpt_get_backlight() Signed-off-by:
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