PCI: Add pci_irq_type() to query the allocated interrupt typegrafted

Add a helper that returns PCI_IRQ_MSIX, PCI_IRQ_MSI, or PCI_IRQ_INTX
based on the interrupt type the PCI core selected after
pci_alloc_irq_vectors().

Several drivers already open-code this check against pdev->msix_enabled
and pdev->msi_enabled, or even open code this helper [1].

A common helper avoids the duplication and keeps drivers from accessing
the bitfield directly (see also [2]).

Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: John Hubbard <jhubbard@nvidia.com>
Link: https://elixir.bootlin.com/linux/v7.1/source/drivers/net/ethernet/aquantia/atlantic/aq_pci_func.c#L196 [1]
Inspired-by: John Hubbard <jhubbard@nvidia.com>
Link: https://lore.kernel.org/all/DKKG2QM3YJYB.Z2H2B2UXJ75N@kernel.org/ [2]
Reviewed-by: Gary Guo <gary@garyguo.net>
Link: https://patch.msgid.link/20260813165234.620555-5-dakr@kernel.org
[ Add missing pci_irq_type() stub for CONFIG_PCI=n. ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/video/Makefile b/drivers/video/Makefile
new file mode 100644
index 000000000..ffbac4387
--- /dev/null
+++ b/drivers/video/Makefile
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_APERTURE_HELPERS)    += aperture.o
+obj-$(CONFIG_SCREEN_INFO)         += screen_info.o
+obj-$(CONFIG_STI_CORE)            += sticore.o
+obj-$(CONFIG_VGASTATE)            += vgastate.o
+obj-$(CONFIG_VIDEO)               += cmdline.o nomodeset.o
+obj-$(CONFIG_HDMI)                += hdmi.o
+
+screen_info-y			  := screen_info_generic.o
+screen_info-$(CONFIG_PCI)         += screen_info_pci.o
+
+obj-$(CONFIG_VT)		  += console/
+obj-$(CONFIG_FB_STI)		  += console/
+obj-$(CONFIG_LOGO)		  += logo/
+obj-y				  += backlight/
+
+obj-y				  += fbdev/
+
+obj-$(CONFIG_VIDEOMODE_HELPERS) += display_timing.o videomode.o
+ifeq ($(CONFIG_OF),y)
+obj-$(CONFIG_VIDEOMODE_HELPERS) += of_display_timing.o of_videomode.o
+endif