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drm/i915/alpm: Alpm aux wake configuration for lnl

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BugLink: https://bugs.launchpad.net/bugs/2046315

Lunarlake has some configurations in ALPM_CTL register for legacy ALPM as
well. Write these.

Bspec: 71477

v2: move version check to lnl_alpm_configure

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240130111130.3298779-5-jouni.hogander@intel.com
(cherry picked from commit 449c2d5948ba8c784dcbc5c67df1d8c54748caa4)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Acked-by: Timo Aaltonen <timo.aaltonen@canonical.com>
Acked-by: Guoqing Jiang <guoqing.jiang@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Jouni Högander
2024-04-16 14:04:12 +08:00
committed by Stefan Bader
parent 5885aa11d7
commit 7c7777b708
1 changed files with 17 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/i915/display/intel_psr.c
+17
View File
@@ -1546,6 +1546,21 @@ static void wm_optimization_wa(struct intel_dp *intel_dp,
wa_16013835468_bit_get(intel_dp), 0);
}
static void lnl_alpm_configure(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
struct intel_psr *psr = &intel_dp->psr;
if (DISPLAY_VER(dev_priv) < 20)
return;
intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder),
ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE |
ALPM_CTL_ALPM_ENTRY_CHECK(psr->alpm_parameters.check_entry_lines) |
ALPM_CTL_EXTENDED_FAST_WAKE_TIME(psr->alpm_parameters.fast_wake_lines));
}
static void intel_psr_enable_source(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
@@ -1611,6 +1626,8 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
intel_dp->psr.psr2_sel_fetch_enabled ?
IGNORE_PSR2_HW_TRACKING : 0);
lnl_alpm_configure(intel_dp);
/*
* Wa_16013835468
* Wa_14015648006