PCIe WAKE# interrupt is needed for bringing back PCIe device state from D3cold to D0. This is pending from long time, there was two attempts done previously to add WAKE# support, . Those series tried to add support for legacy interrupts along with WAKE#. ... See more
Add fwnode_gpiod_get() as a convenience wrapper around fwnode_gpiod_get_index() for the common case where only the first GPIO is required. This mirrors existing gpiod_get() and devm_gpiod_get() helpers and avoids open-coding index 0 at call sites. Signed-... See more
According to the PCI Express specification (PCIe r7.0, Section 5.3.3.2), two link wakeup mechanisms are defined: Beacon and WAKE#. Beacon is a hardware-only mechanism and is invisible to software (PCIe r7.0, Section 4.2.7.8.1). This change adds support fo... See more
Some devices require more flexibility when configuring their dedicated wake-up interrupts, such as support for IRQF_SHARED or other IRQ flags. This is particularly useful in PCIe systems where multiple endpoints (e.g., Wi-Fi and Bluetooth controllers) sha... See more
For older targets like sc7280, we see reading DBI after sending PME turn off message is causing NOC error. To avoid unsafe DBI accesses, introduce qcom_pcie_get_ltssm(), which retrieves the LTSSM state from the PARF_LTSSM register instead. Signed-off-by: ... See more
