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| author | Danilo Krummrich <dakr@kernel.org> | 2026-08-13 18:52:04 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-08-17 01:41:36 +0200 |
| commit | f146c7bc85a51f95c05e0f8173d484eb301ece78 (patch) | |
| tree | 07296ae54ed6551492b0c609dc0f5463f61f89ca /Documentation/ABI/testing/sysfs-class-spi-eeprom | |
| download | linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.tar.gz linux-stable-f146c7bc85a51f95c05e0f8173d484eb301ece78.zip | |
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>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-spi-eeprom')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-spi-eeprom | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-spi-eeprom b/Documentation/ABI/testing/sysfs-class-spi-eeprom new file mode 100644 index 000000000..f4bc7d945 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-spi-eeprom @@ -0,0 +1,30 @@ +What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/fram +Date: June 2021 +KernelVersion: 5.14 +Contact: Jiri Prchal <jiri.prchal@aksignal.cz> +Description: + Contains the FRAM binary data. Same as EEPROM, just another file + name to indicate that it employs ferroelectric process. + It performs write operations at bus speed - no write delays. + +What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/sernum +Date: May 2021 +KernelVersion: 5.14 +Contact: Jiri Prchal <jiri.prchal@aksignal.cz> +Description: + Contains the serial number of the Cypress FRAM (FM25VN) if it is + present. It will be displayed as a 8 byte hex string, as read + from the device. + + This is a read-only attribute. + +What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/jedec_id +Date: January 2026 +KernelVersion: 6.19 +Contact: Patrick Wicki <patrick.wicki@siemens.com> +Description: + Contains the raw JEDEC ID bytes returned by the RDID (0x9f) command. The + bytes are exposed as a hex string in big-endian order as read from the + device. + + This is a read-only attribute. |