>
> From: José Roberto de Souza <jose.souza@xxxxxxxxx>
>
> For multi-tile setups the GSC operational only on the tile 0.
> Skip GSC auxiliary device creation for all other tiles in GSC device init code.
> Initialize basic GSC fields and use the same path as HECI1 (HECI_PXP) device
> disable.
>
> Cc: Tomas Winkler <tomas.winkler@xxxxxxxxx>
> Cc: Vitaly Lubart <vitaly.lubart@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> Signed-off-by: Alexander Usyskin <alexander.usyskin@xxxxxxxxx>
Acked-by: Tomas Winkler <tomas.winkler@xxxxxxxxx>
> ---
> V2: Move decision to skip initialization into GSC device init code.
> This initializes basic GSC fields and uses the same path
> as HECI1 (HECI_PXP) device disable.
> It is simpler and protects interrupt handler too.
>
> drivers/gpu/drm/i915/gt/intel_gsc.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gsc.c
> b/drivers/gpu/drm/i915/gt/intel_gsc.c
> index 976fdf27e790..bcc3605158db 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gsc.c
> +++ b/drivers/gpu/drm/i915/gt/intel_gsc.c
> @@ -174,6 +174,14 @@ static void gsc_init_one(struct drm_i915_private
> *i915, struct intel_gsc *gsc,
> intf->irq = -1;
> intf->id = intf_id;
>
> + /*
> + * On the multi-tile setups the GSC is functional on the first tile only
> + */
> + if (gsc_to_gt(gsc)->info.id != 0) {
> + drm_dbg(&i915->drm, "Not initializing gsc for remote
> tiles\n");
> + return;
> + }
> +
> if (intf_id == 0 && !HAS_HECI_PXP(i915))
> return;
>
> --
> 2.34.1
