- 27 Sep, 2023 13 commits
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Ville Syrjälä authored
Normally we could be in a deep PkgC state all the way up to the point when DSB starts its execution at the transcoders undelayed vblank. The DSB will then have to wait for the hardware to wake up before it can execute anything. This will waste a huge chunk of the vblank time just waiting, and risks the DSB execution spilling into the vertical active period. That will be very bad, especially when programming the LUTs as the anti-collision logic will cause DSB to corrupt LUT writes during vertical active. To avoid these problems we can instruct the DSB to pre-wake the display engine on a specific scanline so that everything will be 100% ready to go when we hit the transcoder's undelayed vblank. One annoyance is that the scanline is specified as just that, a single scanline. So if we happen to start the DSB execution after passing said scanline no DEwake will happen and we may drop back into some PkgC state before reaching the transcoder's undelayed vblank. To prevent that we'll use the "force DEwake" bit to manually force the display engine to stay awake. We'll then have to clear the force bit again after the DSB is done (the force bit remains effective even when the DSB is otherwise disabled). Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-18-ville.syrjala@linux.intel.comReviewed-by:
Uma Shankar <uma.shankar@intel.com>
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Ville Syrjälä authored
Add a helper to convert our idea of a scanline to the hw's idea of the same scanline (ie. apply crtc->scanline_offset in reverse). We'll need this to tell the DSB do stuff on a specific scanline. Signed-off-by:
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Ville Syrjälä authored
The DSB code will want to know the maximum PkgC latency it has to contend with. Add a helper to expose that information. Signed-off-by:
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Ville Syrjälä authored
We want to start the DSB execution from the transcoder's undelayed vblank, so in order to guarantee atomicity with the all the other mmio register writes we need to evade both vblanks. Note that currently we don't add any vblank delay, so this is effectively a nop. But in the future when we start to program double buffered registers from the DSB we'll need to delay the pipe's vblank to provide the register programming "window2" for the DSB. Signed-off-by:
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Ville Syrjälä authored
The DSB has problems writing the legacy LUT. The two workarounds I've discoverted are: - write each entry twice back to back - use non-posted writes Let's use non-posted writes as that seems a bit more standard. TODO: measure which is faster Signed-off-by:
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Ville Syrjälä authored
Loading LUTs with the DSB outside of vblank doesn't really work due to the palette anti-collision logic. Apparently the DSB register writes don't get stalled like CPU mmio writes do and instead we end up corrupting the LUT entries. Disabling the anti-collision logic would allow us to successfully load the LUT outside of vblank, but presumably that risks the LUT reads from the scanout (temporarily) getting corrupted data from the LUT instead. The anti-collision logic isn't active during vblank so that is when we can successfully load the LUT with the DSB. That is what we want to do anyway to avoid tearing. Signed-off-by:
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Ville Syrjälä authored
Using the DSB for LUT loading during full modesets would require some actual though. Let's just use mmio for the time being. Signed-off-by:
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Ville Syrjälä authored
Writing specific transcoder registers (and as it turns out, the legacy LUT as well) via DSB needs a magic sequence to emit non-posted register writes. Add a helper for this. Signed-off-by:
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Ville Syrjälä authored
Add a function for emitting masked register writes. Note that the mask is implemented through byte enables, so can only mask off aligned 8bit sets of bits. Signed-off-by:
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Ville Syrjälä authored
Add a helper for emitting a number of DSB NOOPs commands. Signed-off-by:
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Ville Syrjälä authored
Add some defines to specify what goes inside certain DSB instructions. Signed-off-by:
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Ville Syrjälä authored
Define all the DSB register bits so I don't have to look through bspec to find them. Signed-off-by:
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Ville Syrjälä authored
Avoid the locking overhead for DSB registers. We don't need the locks and intel_dsb_commit() in particular needs to be called from the vblank evade critical section and thus needs to be fast. Signed-off-by:
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- 26 Sep, 2023 2 commits
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Jani Nikula authored
Avoid including the world from headers when forward declarations suffice. Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Reviewed-by:
Rodrigo Vivi <rodrigo.vivi@intel.com> Reviewed-by:
Radhakrishna Sripada <radhakrishna.sripada@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230921155325.3851197-1-jani.nikula@intel.com
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Jani Nikula authored
Convert aux_ch_name() to a helper that prints a string to a caller provided buffer, and use it to get more consistent aux channel debugs. Now that all users of aux_ch_name() are in intel_dp_aux.c, we can make it static too. Signed-off-by:
Gustavo Sousa <gustavo.sousa@intel.com> Reviewed-by:
Andrzej Hajda <andrzej.hajda@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230922105645.3991066-1-jani.nikula@intel.com
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- 25 Sep, 2023 2 commits
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Gustavo Sousa authored
Starting with Xe_LP+, GFX_MSTR_IRQ contains status bits that have W1C behavior. If we do not properly reset them, we would miss delivery of interrupts if a pending bit is set when enabling IRQs. As an example, the display part of our probe routine contains paths where we wait for vblank interrupts. If a display interrupt was already pending when enabling IRQs, we would time out waiting for the vblank. Avoid the potential issue by clearing GFX_MSTR_IRQ as part of the IRQ reset. v2: - Move logic from gen11_gt_irq_reset() to dg1_irq_reset(). (Matt) BSpec: 50875, 54028 Cc: Matt Roper <matthew.d.roper@intel.com> Signed-off-by:
Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230920195351.59421-2-gustavo.sousa@intel.com
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Tvrtko Ursulin authored
Recent refactoring left an unsightly block of empty lines. Remove them. Signed-off-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com> Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com> Reviewed-by:
Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by:
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- 22 Sep, 2023 1 commit
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Balasubramani Vivekanandan authored
Separate the printing of display version and feature flags from the main driver probe to inside the display initialization. This is in alignment with isolating the display code from the main driver and helps Xe driver to resuse it. v2: Replace drm_info_printer with drm_debug_printer (Jani) Signed-off-by:
Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com> Reviewed-by:
José Roberto de Souza <jose.souza@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230921105954.2002469-1-balasubramani.vivekanandan@intel.com
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- 21 Sep, 2023 22 commits
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Ville Syrjälä authored
We have the same h/vsync_end vs. h/vtotal quirk in the VBT parser that was also present in EDID parser. Adjust the VBT parser the same way as was done for hte EDID parser to fixup h/vsync_end instead of h/vtotal. While I'm not currently aware of any machines that need this for the VBT it seems prudent to keep both parsers in sync. And while at it let's add some debugs here as well. A bit lackluster but didn't feel like plumbing the connector all the way down at this time. Signed-off-by:
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Stanislav Lisovskiy authored
Introduce correspondent definitions for choosing between CD2X CDCLK and PLL CDCLK as a source. All the entries in cdclk table for xe2lpd are defined with PLL CDCLK as source, so simply set it. Also skl_cdclk_decimal() shouldn't be set in CDCLK_CTL anymore, so skip it for display version 20 and above. v2: - Remove unneeded comment and use REG_BIT() (Matt Roper) - Rename CDCLK_SOURCE_SEL_CDCLK_PLL() to MDCLK_SOURCE_SEL_CDCLK_PLL to match spec (Lucas) Signed-off-by:Stanislav Lisovskiy <stanislav.lisovskiy@intel.com> Signed-off-by:
Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919192128.2045154-22-lucas.demarchi@intel.com
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Matt Roper authored
Xe2_LPD supports DC5, DC6, and DC9 (DC3CO no longer exists). The overall programming and requirements to enter DC states are similar to those of Xe_LPD+ although AUX transactions do not require DC5/DC6 exit as they did previously. Bspec: 68851, 68857, 68886, 69115 Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Signed-off-by:
Anusha Srivatsa <anusha.srivatsa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230919192128.2045154-21-lucas.demarchi@intel.com
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Ravi Kumar Vodapalli authored
Add Display Power Well for Xe2_LPD. It's mostly the same as Xe_LPD+, so reuse the code. PGPICA1 contains type-C capable port slices which requires the well to power powered up, so add new power well definition for it. The DC_OFF fake power well will be added in a follow up commit. v2: Do not rmw as bit 31 is the only R/W bit in the register (Matt Roper) BSpec: 68886 Signed-off-by:
Ravi Kumar Vodapalli <ravi.kumar.vodapalli@intel.com> Signed-off-by:
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Stanislav Lisovskiy authored
Add a new CDCLK table for Lunar Lake. v2: - Remove mdclk from the table as it's not needed (Matt Roper) - Update waveform values to the latest from spec (Matt Roper) - Rename functions and calculation to match by pixel rate (Lucas) v3: Keep only the table: as far as intel_pixel_rate_to_cdclk() is concerned, the minimum cdclk should still be half the pixel rate on Xe2 (bspec 68858: "Pipe maximum pixel rate = 2 * CDCLK frequency * Pipe Ratio") (Matt Roper) Bspec: 68861, 68858 Signed-off-by: -
Lucas De Marchi authored
LNL's south display uses the same table as MTP. Check for LNL's fake PCH to make it consistent with the other checks. The VBT table doesn't contain the VBT -> spec mapping for LNL. Like in other cases, uses the same as the previous platform. Bspec: 68971, 20124 Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Reviewed-by:
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Lucas De Marchi authored
Xe2_LPD also needs workaround 15010685871. While adding the new display version, also re-order the condition to follow the convention of new version first. v2: Remove redundant HAS_CDCLK_SQUASH(). As the platform or IP version needing the workaround are handpicked, there is no need to also check if tha platform has squashing support (Matt Roper) Signed-off-by: -
Gustavo Sousa authored
Hotplug setup for Xe2_LPD differs from Xe_LPD+ by the fact that the extra programming for hotplug inversion and DDI HPD filter duration is not necessary anymore. As mtp_hpd_irq_setup() is reasonably small, prefer to fork it into a new function for Xe2_LPD instead of adding a platform check. v2: Add extra bspec reference and fix missing else (Matt Roper) BSpec: 68970, 69940 Signed-off-by:
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Juha-Pekka Heikkilä authored
Enable odd size and panning for planar yuv formats. Cc: Suraj Kandpal <suraj.kandpal@intel.com> Signed-off-by:
Juha-Pekka Heikkilä <juha-pekka.heikkila@intel.com> Reviewed-by:
Suraj Kandpal <suraj.kandpal@intel.com> Signed-off-by:
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Luca Coelho authored
Starting from display version 20, we need to read the pin assignment from the IOM TCSS_DDI_STATUS register instead of reading it from the FIA. We use the pin assignment to decide the maximum lane count. So, to support this change, add a new lnl_tc_port_get_max_lane_count() function that reads from the TCSS_DDI_STATUS register and decides the maximum lane count based on that. BSpec: 69594 Cc: Mika Kahola <mika.kahola@intel.com> Signed-off-by:
Luca Coelho <luciano.coelho@intel.com> Reviewed-by:
Mika Kahola <mika.kahola@intel.com> Signed-off-by:
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Gustavo Sousa authored
Differently from previous version, Xe2_LPD groups all port AUX interrupt bits into PICA interrupt registers. While at it, drop some trailing newlines. BSpec: 68958, 69697 Signed-off-by:
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Lucas De Marchi authored
The address of CTL and DATA registers for DP AUX were changed in Xe2_LPD: now they are all in a single range, with CH_A and CH_B coming right after the USBC instances. Like was done when moving registers to PICA, use a helper macro to remap the ch passed to an index that can be used to calculate the right offset. Signed-off-by:
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Lucas De Marchi authored
XELPDP_DP_AUX_CH_CTL() and XELPDP_DP_AUX_CH_DATA() use 2 ranges. Prefer using _PICK_EVEN_2RANGES() over PICK(). Signed-off-by:
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Lucas De Marchi authored
Fix some whitespace issues for register definitions and keep the defines for DP_AUX_CH_CTL and DP_AUX_CH_DATA in the right place: together with the bit definition. While at it add a TODO entry that those defines shouldn't be using an implicit dev_priv. Signed-off-by:
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Clint Taylor authored
Do not read DE_RRMR register after display version 20. This register contains display state information during GFX state dumps. Bspec: 69456 Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Gustavo Sousa <gustavo.sousa@intel.com> Signed-off-by:
Clint Taylor <clinton.a.taylor@intel.com> Reviewed-by:
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Matt Roper authored
Since Xe2LPD technically has FlatCCS, it doesn't have AuxCCS registers like PLANE_AUX_DIST. However we currently have HAS_FLAT_CCS hardcoded to 0 since compression isn't ready; we need to make sure this doesn't cause the display code to go back to trying to write this register. Signed-off-by:
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Stanislav Lisovskiy authored
We now start calculating relative plane data rate for cursor plane as well, as instructed by BSpec and also treat cursor plane same way as other planes, when doing allocation, i.e not using fixed allocation for cursor anymore. Bspec: 68907 Signed-off-by:
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Gustavo Sousa authored
Xe2_LPD doesn't have south display engine on a PCH, it's actually on the SoC die (while north display engine is on compute die). As such it makes no sense to go through the PCI devices looking for an ISA bridge. The approach used by BXT/GLK can't be used here since leaving it with PCH_NONE would mean taking the wrong code paths. For the places we currently use a PCH check, it's enough for now to just check the north display version. Use that to define a fake PCH to be used across the driver. Eventually these PCH checks may need to be re-designed as this is already the third platform using/needing a fake PCH. v2: Match on display IP version rather than on platform (Matt Roper) v3: Extend and clarify commit message (Matt Roper / Ville) Signed-off-by:
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Lucas De Marchi authored
Follow the convention of checking the last platform first and reword the comment to convey there are more platforms than just DG1. Reviewed-by:
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Clint Taylor authored
If a particular pipe is disabled by fuse also remove the FBC for that pipe. Bspec: 69464 Cc: Anusha Srivatsa <anusha.srivatsa@intel.com> Cc: Gustavo Sousa <gustavo.sousa@intel.com> Signed-off-by:
Vinod Govindapillai <vinod.govindapillai@intel.com> Signed-off-by:
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Matt Roper authored
FBC is no longer limited by pipe: add the defines for pipes B and C that will be used by platforms supporting FBC on such pipes. Bspec: 68881, 68904 Signed-off-by:
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Balasubramani Vivekanandan authored
Add Lunar Lake platform definitions for i915 display. The support for LNL will be added to the xe driver, with i915 only driving the display side. Xe2 display is derived from the Xe_LPD+ IP; additional feature deltas will be introduced in subsequent patches, so here it's just adding a separate xe2_lpd_display struct. v2: Use a LPDP_FEATURES macro (Matt Roper) Signed-off-by:
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