Messages in this thread | | | From | Guanbing Huang <> | Subject | [PATCH v6 0/3] serial: 8250_pnp: Support configurable reg shift property | Date | Tue, 9 Apr 2024 15:43:20 +0800 |
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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: 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
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