[PATCH v8 tty-next 0/4] serial: 8250_pci1xxxx: Add driver for the pci1xxxx's quad-uart function

From: Kumaravel Thiagarajan
Date: Sat Dec 10 2022 - 08:12:57 EST


pci1xxxx is a PCIe switch with a multi-function endpoint on one of its
downstream ports. Quad-uart is one of the functions in the multi-function
endpoint. This patch adds device driver for the quad-uart function and
enumerates between 1 to 4 instances of uarts based on the PCIe subsystem
device ID.

The changes from v1->v2->v3->v4->v5->v6->v7->v8 are mentioned in each patch
in the patchset.

Thanks to Andy Shevchenko, Ilpo Jarvinen, Chritophe JAILLET, Geert
Uytterhoeven, Greg KH for their review comments.

Kumaravel Thiagarajan (4):
serial: 8250_pci: Add serial8250_pci_setup_port definition in
8250_pcilib.c
serial: 8250_pci1xxxx: Add driver for quad-uart support
serial: 8250_pci1xxxx: Add RS485 support to quad-uart driver
serial: 8250_pci1xxxx: Add power management functions to quad-uart
driver

MAINTAINERS | 7 +
drivers/tty/serial/8250/8250_pci.c | 25 +-
drivers/tty/serial/8250/8250_pci1xxxx.c | 502 ++++++++++++++++++++++++
drivers/tty/serial/8250/8250_pcilib.c | 38 ++
drivers/tty/serial/8250/8250_pcilib.h | 15 +
drivers/tty/serial/8250/8250_port.c | 8 +
drivers/tty/serial/8250/Kconfig | 15 +
drivers/tty/serial/8250/Makefile | 2 +
include/uapi/linux/serial_core.h | 3 +
9 files changed, 593 insertions(+), 22 deletions(-)
create mode 100644 drivers/tty/serial/8250/8250_pci1xxxx.c
create mode 100644 drivers/tty/serial/8250/8250_pcilib.c
create mode 100644 drivers/tty/serial/8250/8250_pcilib.h

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2.25.1