linux-kernel - [PATCH v6 0/3] serial: 8250_pnp: Support configurable reg shift property

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Date: Tue,  9 Apr 2024 15:43:20 +0800
From: Guanbing Huang <albanhuang0@...il.com>
To: gregkh@...uxfoundation.org,
	andriy.shevchenko@...el.com,
	rafael.j.wysocki@...el.com
Cc: linux-acpi@...r.kernel.org,
	tony@...mide.com,
	john.ogness@...utronix.de,
	yangyicong@...ilicon.com,
	jirislaby@...nel.org,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	lvjianmin@...ngson.cn,
	albanhuang@...cent.com,
	tombinfan@...cent.com
Subject: [PATCH v6 0/3] serial: 8250_pnp: Support configurable reg shift property

From: Guanbing Huang <albanhuang@...cent.com>

The 16550a serial port based on the ACPI table requires obtaining the
reg-shift attribute. In the ACPI scenario, If the reg-shift property
is not configured like in DTS, the 16550a serial driver cannot read or
write controller registers properly during initialization.

To address the issue of configuring the reg-shift property, the 
__uart_read_properties() universal interface is called to implement it.
Adaptation of PNP devices is done in the __uart_read_properties() function.

Guanbing Huang (3):
  PNP: Add dev_is_pnp() macro
  serial: port: Add support of PNP IRQ to __uart_read_properties()
  serial: 8250_pnp: Support configurable reg shift property

 drivers/tty/serial/8250/8250_pnp.c | 40 +++++++++++++++++++-----------
 drivers/tty/serial/serial_port.c   |  7 +++++-
 include/linux/pnp.h                |  2 ++
 3 files changed, 33 insertions(+), 16 deletions(-)

-- 
2.17.1