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

Browse source 
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
This commit is contained in:
Jouni Högander 2024-01-30 13:11:30 +02:00
parent 29f3067a23
commit 449c2d5948
1 changed files with 17 additions and 0 deletions
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17
drivers/gpu/drm/i915/display/intel_psr.c
View file

@ -1554,6 +1554,21 @@ 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)
{
@ -1619,6 +1634,8 @@ 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