Re: [PATCH] drm/i915/psr: enable PSR on Apple T2 eDP panels

[Lukas Wunner]

On Sat, Aug 29, 2026 at 06:16:22PM +0200, Alexander Fischer wrote:
> +static void quirk_apple_psr_handshake(struct intel_dp *intel_dp)
> +{
> +	struct intel_display *display = to_intel_display(intel_dp);
> +	struct pci_dev *t2;
> +
> +	if (!intel_dp_is_edp(intel_dp))
> +		return;
> +
> +	t2 = pci_get_device(PCI_VENDOR_ID_APPLE,
> +			    PCI_DEVICE_ID_APPLE_T2_BRIDGE, NULL);
> +	if (!t2)
> +		return;
> +
> +	pci_dev_put(t2);

We've got pci_dev_present() for this.