> -----Original Message-----
> From: Hogander, Jouni <jouni.hogander@xxxxxxxxx>
> Sent: Tuesday, January 30, 2024 4:42 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Murthy, Arun R <arun.r.murthy@xxxxxxxxx>; Hogander, Jouni
> <jouni.hogander@xxxxxxxxx>
> Subject: [PATCH v3 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
>
> v2: move version check to lnl_alpm_configure
>
> Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx>
> ---
Reviewed-by: Arun R Murthy <arun.r.murthy@xxxxxxxxx>
Thanks and Regards,
Arun R Murthy
--------------------
> drivers/gpu/drm/i915/display/intel_psr.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 7aedda0ca2d2..72cadad09db5 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -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
> --
> 2.34.1
