ACPI 5.0 specification introduces enumeration support for SPB buses. This
patch set adds the UART serial bus enumeration support to Linux using such
mechanism.
NOTE: PATCH 3 is a test patch, should not be merged into any published
Linux source tree.
This patch set is based on the tty tree/tty-next branch.
History:
v1:
1. Add "uart" bus subsystem.
2. Add physical UART target device and description
(uart_device/uart_board_info).
3. Add logical UART host adapter (klist).
4. Add UART target device attributes (tty_dev/tty_attrs/modem_lines).
5. Create tty_device<->uart_device links (host_node/target_node).
v2.
1. Change UART layer related stuff to non-UART related.
2. Modify the order of the function parameters.
v3:
1. Add comments for the uart_board_info and the uart_device.
2. Add platform_data/archdata support.
3. Add ACPI binding and test the binding.
4. Add SERIAL_BUS kconfig item.
v4
1. Convert "uart" bus into "tty_enum" bus.
2. Convert uart_target_device into tty_slave_device.
3. Convert uart_board_info into tty_board_info.
3. Convert kconfig item SERIAL_BUS into TTY_ENUM.
4. Add automatic device unregister support for slave devices.
The new tty_port_unregister_device is for this purpose.
5. Add HID/CID list support.
6. Convert TTY slave device name into ACPI node name.
All of the codes can be tested by the dummy 8250 device.
Lv Zheng (3):
TTY: Add TTY slave enumeration support.
ACPI / UART: Add ACPI enumeration support for UART.
UART: Add dummy devices to test the enumeration.
drivers/acpi/Kconfig | 6 +
drivers/acpi/Makefile | 1 +
drivers/acpi/acpi_uart.c | 215 ++++++++++++++++++++
drivers/acpi/scan.c | 1 +
drivers/tty/Kconfig | 3 +
drivers/tty/Makefile | 1 +
drivers/tty/serial/8250/8250.c | 5 +-
drivers/tty/serial/8250/8250_dummy.c | 103 ++++++++++
drivers/tty/serial/8250/Kconfig | 10 +
drivers/tty/serial/8250/Makefile | 1 +
drivers/tty/serial/Kconfig | 1 +
drivers/tty/serial/serial_core.c | 2 +-
drivers/tty/tty_enum.c | 357 ++++++++++++++++++++++++++++++++++
drivers/tty/tty_port.c | 42 +++-
include/linux/mod_devicetable.h | 6 +
include/linux/serial_8250.h | 4 +
include/linux/serial_core.h | 12 ++
include/linux/tty.h | 112 +++++++++++
18 files changed, 875 insertions(+), 7 deletions(-)
create mode 100644 drivers/acpi/acpi_uart.c
create mode 100644 drivers/tty/serial/8250/8250_dummy.c
create mode 100644 drivers/tty/tty_enum.c
--
1.7.10
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