linux-kernel - [PATCH v1 0/3] serial:8250:Add driver support for MCHP PCI1XXXX UART module

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Message-ID: <20210929113049.64557-1-LakshmiPraveen.Kopparthi@microchip.com>
Date:   Wed, 29 Sep 2021 17:00:46 +0530
From:   LakshmiPraveen Kopparthi <LakshmiPraveen.Kopparthi@...rochip.com>
To:     <gregkh@...uxfoundation.org>, <jirislaby@...nel.org>,
        <andriy.shevchenko@...ux.intel.com>, <macro@...am.me.uk>,
        <zev@...ilderbeest.net>, <vigneshr@...com>,
        <linux-serial@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     <UNGLinuxDriver@...rochip.com>
Subject: [PATCH v1 0/3] serial:8250:Add driver support for MCHP PCI1XXXX UART module

PCI1XXXX UART is a PCIe to UART module. It has 5 SKUs, each is
differentiated by the device IDs in the PCIe config space. Each
SKU supports a maximum of 4 UART ports(UART0,1,2,3) with fixed 
offests.Based on the sub device ID, the combinations of UART 
ports shall be enumerated.

The UART port is compatible with the standard 16550A, but has some 
modifications.The modifications includes a change in the baud rate
settings,auto control of RTS signal for RS485 feature and an
increase of TX & RX FIFO size to 256 Bytes.Also, it has a capability
to wake up the CPU. 

These patches adds the support to enumerate and exercise all the
combinations of UART ports in all the SKUs.

LakshmiPraveen Kopparthi (3):
  Add basic driver support for MCHP PCI1XXXX UART
  Add RS485 support for MCHP PCI1XXXX UART
  Add non standard baudrate support for MCHP PCI1XXXX UART module

 drivers/tty/serial/8250/8250_pci.c  | 384 ++++++++++++++++++++++++++++
 drivers/tty/serial/8250/8250_port.c |   8 +
 include/uapi/linux/serial_core.h    |   3 +
 3 files changed, 395 insertions(+)

-- 
2.25.1