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, 42 insertions, 0 deletions

diff --git a/sound/soc/codecs/chv3-codec.c b/sound/soc/codecs/chv3-codec.c
new file mode 100644
index 000000000..40020500b
--- /dev/null
+++ b/sound/soc/codecs/chv3-codec.c
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/module.h>
+#include <sound/soc.h>
+
+static struct snd_soc_dai_driver chv3_codec_dai = {
+	.name = "chv3-codec-hifi",
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 8,
+		.channels_max = 8,
+		.rates = SNDRV_PCM_RATE_CONTINUOUS,
+		.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	},
+};
+
+static const struct snd_soc_component_driver soc_component_dev_chv3_codec = {
+};
+
+static int chv3_codec_probe(struct platform_device *pdev)
+{
+	return devm_snd_soc_register_component(&pdev->dev,
+		&soc_component_dev_chv3_codec, &chv3_codec_dai, 1);
+}
+
+static const struct of_device_id chv3_codec_of_match[] = {
+	{ .compatible = "google,chv3-codec", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, chv3_codec_of_match);
+
+static struct platform_driver chv3_codec_platform_driver = {
+	.driver = {
+		.name = "chv3-codec",
+		.of_match_table = chv3_codec_of_match,
+	},
+	.probe = chv3_codec_probe,
+};
+module_platform_driver(chv3_codec_platform_driver);
+
+MODULE_DESCRIPTION("ASoC Chameleon v3 codec driver");
+MODULE_AUTHOR("Pawel Anikiel <pan@semihalf.com>");
+MODULE_LICENSE("GPL");