[PATCH v4 0/3] serial: 8250_pnp: Support configurable reg shift property

[Guanbing Huang]

From: Guanbing Huang <albanhuang@xxxxxxxxxxx>

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