- 22 Nov, 2022 17 commits
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Ville Syrjälä authored
Some gen2/gen3 parts have a 10bit gamma mode, on some pipes. Expose it. The format is different to the later i965+ style in that we store a 10bit value and a 6 bit floating point slope for each entry. Ie. the hardware extrapolates the intermediate steps from the current LUT entry, instead of interpolating between the current and next LUT entries. This also means we don't store the last LUT entry in any register as it is defined by the previous LUT entry's value+slope. The slope has limited precision though (2 bit exponent + 4 bit mantissa), so we'd have to allow for more error in the state checker for the last entry and we have to make sure userspace doesn't pass in something where the slope is simply to steep. In theory we should perhaps check the slope for every interval, but we don't do that for any other interpolated gamma mode and I suspect they may also have some internal limit on the slope. I haven't confirmed that theory though. Anyways, for ease of implementation we shall just ignore the last entry in the state checker. If all the other entries match anyway then that seems like a good indication that the hardware was programmed as expected. v2: Redo the state checker logic a bit Rebase due to other changes v3: Fix C8 readout v4: Use REG_FIELD_PREP() Acked-by:Uma Shankar <uma.shankar@intel.com> Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-20-ville.syrjala@linux.intel.com
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Ville Syrjälä authored
On hsw+ and glk class hardware we current make a mess of things when we have to both generate limited range output and use the hw gamma LUT. Since we do the range compression using the pipe CSC unit (which is situated before the gamma LUT in the pipe) we are in fact applying the gamma to the limited range data instead of the full range data as the user intended. We can work around this by applying the range compression via the gamma LUT instead of using the pipe CSC for it. Fairly easy to do now that we have the internal post_csc_lut attachment point where we can stick our new cooked LUT. On hsw+ this only needs to be done when using the split gamma mode or when the ctm is enabled since otherwise we can simply reorder the LUT vs. CSC. On glk we need to do this any time a gamma LUT is used since no reordering is possible. We do lose a bit of coverage in intel_color_assert_luts(), but so be it. Signed-off-by:
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Ville Syrjälä authored
On glk we can no longer reorder the hw LUTS vs. pipe CSC like we could on earlier platforms, and neither do we have a separate output CSC like on icl+. That means if we use the pipe CSC for YCbCr output we are currently applying the gamma LUT after the RGB->YCbCr conversion, which is just wrong. The further we go from a linear curve the more distorted the resulting colors become. To work around this terrible limitation the best we can do is repurpose the hw degamma LUT as a poor man's gamma LUT. Now that we have the internal pre_csc_lut attachment point that is not particularly hard to do. What makes this less than ideal however is the fact that the hw degamma LUT and gamma LUTs have very different capabilities. The gamma LUT can operate in direct color type modes, whereas the degamma LUT can't and just always operates in interpolated mode. Additionally the degamma LUT is just a single 1D LUT, whereas the gamma LUT is made of three separate 1D LUts (one for each channel). So in order to make this semi-sensible we must also verify the user supplied LUT more less matches the hw degamma LUT capabilities. We still end up losing most of the LUT entries though, so the results might be a bit crap. The other option of flat out rejecting the YCbCr+gamma LUT combo seems extremely likely to just cause a black screen for the user. Eg. pretty sure Xorg always applies some kind of gamma LUT, and if the user then plugs in a display that needs YCbCr output we're toast. Signed-off-by:
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Ville Syrjälä authored
Currently crtc_state_is_legacy_gamma() has a very specific set of conditions, not all of which are actually necessary. Also when we detect those conditions check_luts() just skips all the checks. That will no longer work for glk soon when we'll start to use the hw degamma LUT in place of the hw gamma LUT for YCbCr output. So let's rework the logic to only really consider whether the user provided gamma_lut is one that matches the hw legacy LUT capabilities or not. We'll need to reject C8+degamma on ivb+ since the presence of degamma_lut would either mean we have to really use the LUT for degamma as opposed to C8 palette, or we have to enable split gamma mode which also can't work as the C8 palette. Otherwise this will now cause the legacy LUT to go through the regular lut checks as well. As a side effect we also start to allow the use of the legacy LUT with CTM, but that is perfectly fine as far a the hardware is concerned. Signed-off-by:
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Ville Syrjälä authored
We have full readout now for all platforms (sans the icl+ multi-segment readout hw fail), so hook up the LUT state checker for everyone. We add a new vfunc for this since different platforms need to handle the details a bit differently. The implementation is rather repetitive in places. Probably we want to think of a more declarative approach for the LUT precision/etc. stuff in the future... Note that we're currently missing readout for c8_planes, so we'll have to skip the state check in that case. v2: Fix readout for C8 use cases v3: Skip C8 entirely due to lack of c8_planes readout Add ilk_has_pre_csc_lut() helper and use other such helpers Signed-off-by: -
Ville Syrjälä authored
Every platform now implements .read_luts(). Make it mandatory. Signed-off-by:
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Ville Syrjälä authored
Add the approproate c8_planes checks to make the LUT code ready for C8 palette readout. Note we currently lack the actual c8_planes readout, so this won't work yet. But no harm in making the code somewhat more ready for the day when we do get c8_planes readout. Signed-off-by:
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Ville Syrjälä authored
Just like ivb+, ilk/snb can select whether the hw lut acts as gamma or degamma. Make the readout cognizant of that fact. v2: deal with pre_csc_lut v3: use ilk_has_post_csc_lut() helper Reviewed-by:
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Ville Syrjälä authored
We now have all the code necessary for gamma/degamma readout on ivb/hsw. Plug it all in. As with bdw+ the cooked {pre,post}_csc_lut make this trivial even in split gamma mode. Note that on HSW if IPS is enabled the hardware will hang if you try to access the LUT in split gamma mode. Thus we need to reorder the LUT readout vs. IPS enable steps. v2: deal with {pre,post}_csc_lut split gamma is no longer a problem handle HSW IPS w/a v3: use ilk_has_post_csc_lut() helper Reviewed-by: Uma Shankar <uma.shankar@intel.com> #v1 Signed-off-by: -
Ville Syrjälä authored
Read out the gamma/degamma LUT on bdw+. Now that the {pre,post}_csc_lut match the hardware LUT size even in split gamma mode this is trivial. v2: deal with {pre,post}_csc_lut split gamma is no longer a problem v3: add ilk_has_post_csc_lut() helper Reviewed-by: Uma Shankar <uma.shankar@intel.com> #v1 Signed-off-by: -
Ville Syrjälä authored
Since CHV has the dedicate CGM degamma unit readout is trivial. Just do it. v2: deal with post_csc_lut Reviewed-by:
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Ville Syrjälä authored
Read out the degamma LUT on glk+. No state cheker as of yet since it requires dealing with the glk csc vs. degamma mess. v2: deal with post_csc_lut v3: add icl_has_{pre,post}_csc_lut(*) helpers Reviewed-by: -
Ville Syrjälä authored
Rename a the LUT state check foo_gamma_precision() functions to foo_post_csc_lut_precision() to make it more clear what they really do. Signed-off-by:
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Ville Syrjälä authored
The degamma LUT is interpolated so we need the 128th (==1.0) entry to represent the full < 1.0 input range. Only the 129th and 130th entries are strictly for the >=1.0 extended range inputs. Signed-off-by:
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Ville Syrjälä authored
bigjoiner_pipes() doesn't consider that: - RKL only has three pipes - some pipes may be fused off This means that intel_atomic_check_bigjoiner() won't reject all configurations that would need a non-existent pipe. Instead we just keep on rolling witout actually having reserved the slave pipe we need. It's possible that we don't outright explode anywhere due to this since eg. for_each_intel_crtc_in_pipe_mask() will only walk the crtcs we've registered even though the passed in pipe_mask asks for more of them. But clearly the thing won't do what is expected of it when the required pipes are not present. Fix the problem by consulting the device info pipe_mask already in bigjoiner_pipes(). Cc: stable@vger.kernel.org Signed-off-by:
Arun R Murthy <arun.r.murthy@intel.com>
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Vinod Govindapillai authored
Enable the SDP split configuration for DP2.0. v2: Move the register handling out of compute config function (JaniN) v3: Patch styling and register access based on platform support (JaniN) v4: Rebased v5: Use unconditional clear bit in intel_de_rmw (Jani Nikula) Bspec: 67768 Signed-off-by:
Vinod Govindapillai <vinod.govindapillai@intel.com> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
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Anusha Srivatsa authored
MTL supports both squash and crawl. Cc: Clint Taylor <clinton.a.taylor@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by:
Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221118190008.824412-1-anusha.srivatsa@intel.com
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- 21 Nov, 2022 3 commits
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Anusha Srivatsa authored
As per bSpec MTL has 38.4 MHz Reference clock. Adding the cdclk tables and cdclk_funcs that MTL will use. v2: Revert to using bxt_get_cdclk() BSpec: 65243 Cc: Clint Taylor <Clinton.A.Taylor@intel.com> Signed-off-by:
Clint Taylor <Clinton.A.Taylor@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221117230002.792096-3-anusha.srivatsa@intel.com
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Ville Syrjälä authored
For MTL, changing cdclk from between certain frequencies has both squash and crawl. Use the current cdclk config and the new(desired) cdclk config to construct a mid cdclk config. Set the cdclk twice: - Current cdclk -> mid cdclk - mid cdclk -> desired cdclk Driver should not take some Pcode mailbox communication in the cdclk path for platforms that are Display version 14 and later. v2: Add check in intel_modeset_calc_cdclk() to avoid cdclk change via modeset for platforms that support squash_crawl sequences(Ville) v3: Add checks for: - scenario where only slow clock is used and cdclk is actually 0 (bringing up display). - PLLs are on before looking up the waveform. - Squash and crawl capability checks.(Ville) v4: Rebase - Move checks to be more consistent (Ville) - Add comments (Bala) v5: - Further small changes. Move checks around. - Make if-else better looking (Ville) v6: MTl should not follow PUnit mailbox communication as the rest of gen11+ platforms.(Anusha) Cc: Clint Taylor <Clinton.A.Taylor@intel.com> Cc: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com> Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221117230002.792096-2-anusha.srivatsa@intel.com
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Anusha Srivatsa authored
cdclk_sanitize() function was written assuming vco was a signed integer. vco gets assigned to -1 (essentially ~0) for the case where PLL might be enabled and vco is not a frequency that will ever get used. In such a scenario the right thing to do is disable the PLL and re-enable it again with a valid frequency. However the vco is declared as a unsigned variable. With the above assumption, driver takes crawl path when not needed. Add explicit check to not crawl in the case of an invalid PLL. v2: Move the check from .h to .c (MattR) - Move check to bxt_set_cdclk() instead of intel_modeset_calc_cdclk() which is directly in the path of the sanitize() function (Ville) v3: remove unwanted parenthesis(Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Suggested-by:
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- 19 Nov, 2022 9 commits
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Ville Syrjälä authored
Convert the lonely DRM_DEBUG_KMS() to the per-device variant. Signed-off-by:
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Ville Syrjälä authored
Follow the modern style and rename most 'dev_priv' variables to 'i915'. intel_dvo_init_dev() is the sole exception since it needs the magic 'dev_priv' variable for the DPLL register macros. Signed-off-by:
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Ville Syrjälä authored
Remove the pointless intel_ namespace from our encoder/connector variables. Signed-off-by:
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Ville Syrjälä authored
The loop over intel_dvo_devices[] makes intel_dvo_init() an ugly mess. Pull the i2c device probe out to a separate function so that we can get rid of the loop and flatten the code. Signed-off-by:
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Ville Syrjälä authored
Reorder the drm_encoder_init() vs. encoder->port assignment so that we don't need the extra 'port' variable. Signed-off-by:
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Ville Syrjälä authored
Introduce intel_dvo_connector_type() as a counterpart to intel_dvo_encoder_type(), mainly to declutter intel_dvo_init() a bit. Signed-off-by:
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Ville Syrjälä authored
We call drm_encoder_init() before determining the correct encoder type, thus we always end up with DRM_MODE_ENCODER_NONE. Determine the correct encoder type earlier. Signed-off-by:
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Ville Syrjälä authored
If we can't initialize the DVO encoder also free the connector state allocated by intel_connector_alloc(). Signed-off-by:
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Ville Syrjälä authored
intel_dvo.panel_wants_dither is only set but never used. We can't do dithering on the gmch side anyway since the dithering logic is part of the integrated LVDS port and not available for other output types. Signed-off-by:
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- 18 Nov, 2022 11 commits
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Matt Roper authored
DG2 has been very usable for a while now, and all of the uapi changes related to fundamental platform usage have been finalized. Recent CI results have also been healthy, so we're ready to drop the force_probe requirement and enable the platform by default. Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Acked-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by:
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Radhakrishna Sripada authored
MTL LPDDR5 reported 16b with 8 channels. Previous platforms reported 32b with 4 channels and hence needed a multiplication by a factor of 2. Skip increasing the channels for MTL. v2: Use version check instead of platform check(MattR) Bspec: 64631 Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
Radhakrishna Sripada <radhakrishna.sripada@intel.com> Reviewed-by:
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Radhakrishna Sripada authored
MEM_SS_INFO_GLOBAL Register info read from the hardware is cached in val. However the variable is being modified when determining the DRAM type thereby clearing out the channels and qgv info extracted later in the function xelpdp_get_dram_info. Preserve the register value and use extracted fields in the switch statement. Fixes: 825477e7 ("drm/i915/mtl: Obtain SAGV values from MMIO instead of GT pcode mailbox") Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
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Matt Atwood authored
Add stepping-substepping info in accordance to bpsec changes. Bspec: 55376 Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by:
Matt Atwood <matthew.s.atwood@intel.com> Reviewed-by:
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Imre Deak authored
MTL+ requires the AUX_IO power for the main link only on eDP, so don't enable it in other cases. v2: - Rebased on checking intel_encoder_can_psr() instead of crtc->has_psr. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
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Imre Deak authored
Factor out functions to get/put the AUX_IO power domain for the main link on DDI ports. While at it clarify the corresponding code comment. No functional change. v2: - s/(get/put)_aux_power_for_main_link/main_link_aux_power_domain_(get/put) (Jani) - Clarify in the code comment that AUX_IO is needed only by TypeC besides eDP/PSR. v3: - Rebased on checking intel_encoder_can_psr() instead of crtc->has_psr. v4: - Don't call fetch_and_zero() with side-effect during variable declaration. (Ville) Cc: Jani Nikula <jani.nikula@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
Add the missing DC_OFF power domain -> DC_OFF power well mappings on all platforms. This didn't cause a problem as the DC_OFF power domain is only used on JSL, where the mapping was already correct. Signed-off-by:
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Imre Deak authored
BXT and GLK were missing the AUX_IO_A power domain -> PHY A common power well mapping, add these now. This didn't cause a problem as the AUX_IO_A and DDI_LANES_A power domains are acquired together. Signed-off-by:
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Imre Deak authored
Starting with TGL eDP is supported on ports B+ (besides port A), so make sure DC states are not blocked on any such ports. For this add an AUX_IO_<port> power domain for each port with eDP support. These domains similarly to AUX_IO_A enable only the AUX_IO_<port> power well for an enabled port, whereas the existing AUX_<port> domains enable both the AUX_IO_<port> and the DC_OFF power wells as required by DP AUX transfers. v2: (Ville) - Split the change using AUX vs. AUX_IO on port A to a separate patch. - Select AUX_IO vs. AUX based on crtc_state->has_psr instead of is_edp(). v3: - Rebased on checking intel_encoder_can_psr() instead of crtc->has_psr. v4: - Fix warn in intel_display_power_aux_io_domain(). (Ville) Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
Use the AUX_IO_A display power domain only for eDP on port A where PSR is also supported. This is the case where DC states need to be enabled while the output is enabled - ensured by AUX_IO_A domain not enabling the DC_OFF power well. Otherwise port A can be treated the same way as other ports with an external DP output: using the AUX_<port> domain which disables the unrequired DC states. This change prepares for the next patch enabling DC states on all ports supporting eDP/PSR besides port A. v2: - Check the encoder PSR capability instead of PSR being enabled in the crtc_state, as the latter can be changed with a fastset. Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by:
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Imre Deak authored
Move the definition of the AUX_IO_A power domain, requiring only the corresponding AUX_IO_A power well to be enabled, before all the AUX_<port> power domains, which require both the AUX_IO_<port> and the DC_OFF power wells to be enabled. No functional change. Signed-off-by:
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