> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Jouni
> Högander
> Sent: Friday, January 5, 2024 7:45 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH v2 4/4] drm/i915/alpm: Alpm aux wake configuration for lnl
>
> Lunarlake has some configurations in ALPM_CTL register for legacy ALPM as
> well. Write these.
>
> Bspec: 71477
>
> Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_psr.c | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 7fbd18f21c3b..09d496d7dcee 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -1527,6 +1527,18 @@ 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 alpm_parameters *alpm_params = &intel_dp->psr.alpm_params;
> +
> + intel_de_write(dev_priv, ALPM_CTL(cpu_transcoder),
Do we need intel_de_rmw()
> + ALPM_CTL_EXTENDED_FAST_WAKE_ENABLE |
> + ALPM_CTL_ALPM_ENTRY_CHECK(alpm_params-
> >check_entry_lines) |
> +
> +ALPM_CTL_EXTENDED_FAST_WAKE_TIME(alpm_params->fast_wake_lines));
> +}
> +
> static void intel_psr_enable_source(struct intel_dp *intel_dp,
> const struct intel_crtc_state *crtc_state) {
> @@ -1582,6 +1594,9 @@ static void intel_psr_enable_source(struct intel_dp
> *intel_dp,
> intel_dp->psr.psr2_sel_fetch_enabled ?
> IGNORE_PSR2_HW_TRACKING : 0);
>
> + if (DISPLAY_VER(dev_priv) >= 20)
> + lnl_alpm_configure(intel_dp);
> +
> /*
> * Wa_16013835468
> * Wa_14015648006
> --
> 2.34.1
Thanks and Regards,
Arun R Murthy
--------------------
