From: Guanbing Huang <albanhuang@outlook.com>
To: gregkh@linuxfoundation.org, andriy.shevchenko@intel.com,
rafael.j.wysocki@intel.com
Cc: linux-acpi@vger.kernel.org, tony@atomide.com,
john.ogness@linutronix.de, yangyicong@hisilicon.com,
jirislaby@kernel.org, linux-kernel@vger.kernel.org,
linux-serial@vger.kernel.org, lvjianmin@loongson.cn,
albanhuang@tencent.com, tombinfan@tencent.com
Subject: [PATCH v4 0/3] serial: 8250_pnp: Support configurable reg shift property
Date: Wed, 3 Apr 2024 15:41:27 +0800 [thread overview]
Message-ID: <PSAPR06MB49524F135EBF81C4F2D181BCC93D2@PSAPR06MB4952.apcprd06.prod.outlook.com> (raw)
From: Guanbing Huang <albanhuang@tencent.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: 8250_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 | 36 ++++++++++++++++++++----------
drivers/tty/serial/serial_port.c | 7 +++++-
include/linux/pnp.h | 2 ++
3 files changed, 32 insertions(+), 13 deletions(-)
--
2.17.1
next reply other threads:[~2024-04-03 7:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 7:41 Guanbing Huang [this message]
2024-04-03 10:01 ` [PATCH v4 0/3] serial: 8250_pnp: Support configurable reg shift property Andy Shevchenko
2024-04-03 10:07 ` Andy Shevchenko
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