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zephyr/drivers/serial/Kconfig.ns16550

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license: cleanup: add SPDX Apache-2.0 license identifier Update the files which contain no license information with the 'Apache-2.0' SPDX license identifier. Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of Zephyr, which is Apache version 2. Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-04-06 15:08:09 +02:00
# SPDX-License-Identifier: Apache-2.0
serial/ns16550: refactor (again) to conform to driver model () Renames ns16550.c to uart_ns16550.c. This is to follow the driver naming convention. () Renames functions ns16550_uart_*() to uart_ns16550_*(), following driver naming convention. () UART ports initialization is moved into the driver itself. All the init code in platform config files is removed. () Adds (many) Kconfig options. These don't have to be defined in each platform's board.h anymore. () Renames CONFIG_NS16550_* to CONFIG_UART_NS16550_* () Disable NS16550 for ARC as no port is defined anyway. Change-Id: I76bbe25b9bc75eb62df81e533f84f4f63a5257b7 Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2015-12-01 17:42:19 +01:00
menuconfig UART_NS16550
bool "NS16550 serial driver"
drivers: serial: Update drivers to use devicetree Kconfig symbol Update serial drivers to use DT_HAS_<compat>_ENABLED Kconfig symbol to expose the driver and enable it by default based on devicetree. We remove 'depend on' Kconfig for symbols that would be implied by the devicetree node existing. Signed-off-by: Kumar Gala <galak@kernel.org>
2022-07-20 20:46:30 +02:00
default y
depends on DT_HAS_NS16550_ENABLED
serial/ns16550: refactor (again) to conform to driver model () Renames ns16550.c to uart_ns16550.c. This is to follow the driver naming convention. () Renames functions ns16550_uart_*() to uart_ns16550_*(), following driver naming convention. () UART ports initialization is moved into the driver itself. All the init code in platform config files is removed. () Adds (many) Kconfig options. These don't have to be defined in each platform's board.h anymore. () Renames CONFIG_NS16550_* to CONFIG_UART_NS16550_* () Disable NS16550 for ARC as no port is defined anyway. Change-Id: I76bbe25b9bc75eb62df81e533f84f4f63a5257b7 Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2015-12-01 17:42:19 +01:00
select SERIAL_HAS_DRIVER
serial: introduce SERIAL_SUPPORT_INTERRUPT Kconfig option As not all drivers support interrupts we don't have a means to know if we can allow UART_INTERRUPT_DRIVEN to be enabled and thus various Kconfig options that select UART_INTERRUPT_DRIVEN. Some drivers have a interrupts, however not all do. So introduce a Kconfig option to let us know what the driver actually supports. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-06-22 18:26:58 +02:00
select SERIAL_SUPPORT_INTERRUPT
serial/ns16550: refactor (again) to conform to driver model () Renames ns16550.c to uart_ns16550.c. This is to follow the driver naming convention. () Renames functions ns16550_uart_*() to uart_ns16550_*(), following driver naming convention. () UART ports initialization is moved into the driver itself. All the init code in platform config files is removed. () Adds (many) Kconfig options. These don't have to be defined in each platform's board.h anymore. () Renames CONFIG_NS16550_* to CONFIG_UART_NS16550_* () Disable NS16550 for ARC as no port is defined anyway. Change-Id: I76bbe25b9bc75eb62df81e533f84f4f63a5257b7 Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2015-12-01 17:42:19 +01:00
help
This option enables the NS16550 serial driver.
This driver can be used for the serial hardware
doc: Fix terminology in Kconfig files for 'platform' Completing the terminology change started with change 4008 by updating the Kconfig files processed to produce the online documentation, plus header files processed by doxygen. References to 'platform' are change to 'board' Change-Id: Id0ed3dc1439a0ea0a4bd19d4904889cf79bec33e Jira: ZEP-534 Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2016-08-18 01:33:08 +02:00
available on x86 boards.
serial/ns16550: refactor (again) to conform to driver model () Renames ns16550.c to uart_ns16550.c. This is to follow the driver naming convention. () Renames functions ns16550_uart_*() to uart_ns16550_*(), following driver naming convention. () UART ports initialization is moved into the driver itself. All the init code in platform config files is removed. () Adds (many) Kconfig options. These don't have to be defined in each platform's board.h anymore. () Renames CONFIG_NS16550_* to CONFIG_UART_NS16550_* () Disable NS16550 for ARC as no port is defined anyway. Change-Id: I76bbe25b9bc75eb62df81e533f84f4f63a5257b7 Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2015-12-01 17:42:19 +01:00
drivers: uart: ns16550: Clean up Kconfig dependency usage Use a dependency block instead of specifying a UART_NS16550 dependency for each individual opton. This doesn't save many lines right now, but may do so once more options are added. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-19 16:27:22 +01:00
if UART_NS16550
uart/ns16550: implements new API of line control This implements the newly introduced APIs to manipulate line controls for UART. This also implements the driver command API as setting baud rate may require setting the DLF. Change-Id: I80634aa3fbd4a3223c46edb61417123e36f439dd Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2016-01-06 18:17:03 +01:00
config UART_NS16550_LINE_CTRL
kconfig: remove Enable from boolean prompts According to Kconfig guidelines, boolean prompts must not start with "Enable...". The following command has been used to automate the changes in this patch: sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig* Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-03-09 12:05:12 +01:00
bool "Serial Line Control for Apps"
drivers: uart: ns16550: Clean up Kconfig dependency usage Use a dependency block instead of specifying a UART_NS16550 dependency for each individual opton. This doesn't save many lines right now, but may do so once more options are added. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-19 16:27:22 +01:00
depends on UART_LINE_CTRL
uart/ns16550: implements new API of line control This implements the newly introduced APIs to manipulate line controls for UART. This also implements the driver command API as setting baud rate may require setting the DLF. Change-Id: I80634aa3fbd4a3223c46edb61417123e36f439dd Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2016-01-06 18:17:03 +01:00
help
This enables the API for apps to control the serial line,
such as CTS and RTS.
Says n if not sure.
config UART_NS16550_DRV_CMD
kconfig: remove Enable from boolean prompts According to Kconfig guidelines, boolean prompts must not start with "Enable...". The following command has been used to automate the changes in this patch: sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig* Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-03-09 12:05:12 +01:00
bool "Driver Commands"
drivers: uart: ns16550: Clean up Kconfig dependency usage Use a dependency block instead of specifying a UART_NS16550 dependency for each individual opton. This doesn't save many lines right now, but may do so once more options are added. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-19 16:27:22 +01:00
depends on UART_DRV_CMD
uart/ns16550: implements new API of line control This implements the newly introduced APIs to manipulate line controls for UART. This also implements the driver command API as setting baud rate may require setting the DLF. Change-Id: I80634aa3fbd4a3223c46edb61417123e36f439dd Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2016-01-06 18:17:03 +01:00
help
This enables the API for apps to send commands to driver.
Says n if not sure.
drivers: serial: Name the NS16550 variant Kconfig choice Naming this choice allows setting a default value in defconfig. Signed-off-by: Grant Ramsay <gramsay@enphaseenergy.com>
2023-01-31 20:33:22 +01:00
choice UART_NS16550_VARIANT
driver/serial: ns16550: set NS16550 as default variant This add UART_NS16550_VARIANT_16550 configuration inside the choice of UART_NS16550_VARIANT_NS16750 and UART_NS16550_VARIANT_NS16950. The configuration is enabled by default to make NS16550 device to get correct FIFO size configuration (16 bytes). fixes #45783 Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
2022-05-18 07:38:10 +02:00
prompt "UART variant"
default UART_NS16550_VARIANT_NS16550
drivers: serial: modify ns16550 to use extended FIFO Cyclone V SoC FPGA supports 128Byte FIFO for UART communication, this modification adds a feature to use 128byte FIFO serial UART Signed-off-by: Esteban Valverde <esteban.valverde.vega@intel.com>
2022-04-26 11:59:56 +02:00
help
driver/serial: ns16550: set NS16550 as default variant This add UART_NS16550_VARIANT_16550 configuration inside the choice of UART_NS16550_VARIANT_NS16750 and UART_NS16550_VARIANT_NS16950. The configuration is enabled by default to make NS16550 device to get correct FIFO size configuration (16 bytes). fixes #45783 Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
2022-05-18 07:38:10 +02:00
Select UART device variant
drivers: serial: modify ns16550 to use extended FIFO Cyclone V SoC FPGA supports 128Byte FIFO for UART communication, this modification adds a feature to use 128byte FIFO serial UART Signed-off-by: Esteban Valverde <esteban.valverde.vega@intel.com>
2022-04-26 11:59:56 +02:00
driver/serial: ns16550: set NS16550 as default variant This add UART_NS16550_VARIANT_16550 configuration inside the choice of UART_NS16550_VARIANT_NS16750 and UART_NS16550_VARIANT_NS16950. The configuration is enabled by default to make NS16550 device to get correct FIFO size configuration (16 bytes). fixes #45783 Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
2022-05-18 07:38:10 +02:00
config UART_NS16550_VARIANT_NS16550
bool "UART 16550 (16-bytes FIFO)"
help
This enables support for 16-bytes FIFO if UART controller is 16550.
config UART_NS16550_VARIANT_NS16750
kconfig: remove Enable from boolean prompts According to Kconfig guidelines, boolean prompts must not start with "Enable...". The following command has been used to automate the changes in this patch: sed -i "s/bool \"[Ee]nables\? \(\w\)/bool \"\U\1/g" **/Kconfig* Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-03-09 12:05:12 +01:00
bool "UART 16750 (64-bytes FIFO and auto flow control)"
serial: enable 64-bytes FIFO for UART 16750 in uart_ns16550 driver UART 16750 is basically a UART 16550 with a 64-bytes FIFO. The 64-bytes FIFO can be enabled via register FCR. Account for it in the uart_ns16550 driver whenever the CONFIG_UART_NS16750 variable is set. Change-Id: I2342b28a41d03c96410bbfbe57e4b5a4e335731d Signed-off-by: Jean-Paul Etienne <fractalclone@gmail.com>
2016-11-15 03:23:45 +01:00
help
driver: uart: ns16550: convert custom init options to DTS flow control The sole purpose of init options has been to enable hardware flow control on NS16750 when asked. Use the proper DTS tags for this. Signed-off-by: Timo Teräs <timo.teras@iki.fi>
2020-03-03 21:25:52 +01:00
This enables support for 64-bytes FIFO and automatic hardware
flow control if UART controller is 16750.
serial: enable 64-bytes FIFO for UART 16750 in uart_ns16550 driver UART 16750 is basically a UART 16550 with a 64-bytes FIFO. The 64-bytes FIFO can be enabled via register FCR. Account for it in the uart_ns16550 driver whenever the CONFIG_UART_NS16750 variable is set. Change-Id: I2342b28a41d03c96410bbfbe57e4b5a4e335731d Signed-off-by: Jean-Paul Etienne <fractalclone@gmail.com>
2016-11-15 03:23:45 +01:00
driver/serial: ns16550: set NS16550 as default variant This add UART_NS16550_VARIANT_16550 configuration inside the choice of UART_NS16550_VARIANT_NS16750 and UART_NS16550_VARIANT_NS16950. The configuration is enabled by default to make NS16550 device to get correct FIFO size configuration (16 bytes). fixes #45783 Signed-off-by: Dino Li <Dino.Li@ite.com.tw>
2022-05-18 07:38:10 +02:00
config UART_NS16550_VARIANT_NS16950
drivers: serial: modify ns16550 to use extended FIFO Cyclone V SoC FPGA supports 128Byte FIFO for UART communication, this modification adds a feature to use 128byte FIFO serial UART Signed-off-by: Esteban Valverde <esteban.valverde.vega@intel.com>
2022-04-26 11:59:56 +02:00
bool "UART 16950 (128-bytes FIFO and auto flow control)"
help
This enables support for 128-bytes FIFO and automatic hardware flow control.
endchoice
drivers: ns16550: add WORD only access support In some hardware,e.g. ARC HS Development kit,the peripheral space of ns16550 only allowes WORD access, byte acess will raise bus error. This commit adds support for this case Signed-off-by: Wayne Ren <wei.ren@synopsys.com>
2019-05-29 08:58:02 +02:00
config UART_NS16550_ACCESS_WORD_ONLY
bool "NS16550 only allows word access"
help
In some case, e.g. ARC HS Development kit, the peripheral space of ns
16550 (DesignWare UART) only allows word access, byte access will raise
exception.
drivers: uart: ns16550: Clean up Kconfig dependency usage Use a dependency block instead of specifying a UART_NS16550 dependency for each individual opton. This doesn't save many lines right now, but may do so once more options are added. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-19 16:27:22 +01:00
drivers: serial: ns16550: use MMIO device depending on Kconfig option Add a new selectable Kconfig option to decide wether the device driver is a MMIO device or not. Previous to this patch, the decision was maded based on the existence of a definition in <soc.h>. The design was fragile, as code compiled anyway if the definition was not present. All platforms/boards that had the definition in <soc.h> select the Kconfig option in their respective defconfig files. Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-06-01 15:51:56 +02:00
config UART_NS16550_ACCESS_IOPORT
bool
help
When enabled, NS16550 will not be a memory mapped device. This option
must be selected at SoC/board level if needed.
drivers: serial: ns16550: Enable simultaneous support of IO, MMIO and PCIe Enabled simultaneous support by adding a DTS variable named “io-mapped”. There are 3 possibilities through instance in dtsi file. Under PCIe, PCIe ns16550. Under soc and has a variable io-mapped, legacy(IO mapped). Under soc and don’t have a variable io-mapped, MMIO mapped. Simultaneous access can be enabled by a Kconfig. For PCIe instances UART initialization should be done post-kernel as it depends on PCIe initialization. Co-authored-by: Najumon BA <najumon.ba@intel.com> Signed-off-by: Anisetti Avinash Krishna <anisetti.avinash.krishna@intel.com>
2023-03-27 07:49:13 +02:00
config UART_NS16550_SIMULT_ACCESS
bool
help
When enabled, NS16550 supports IO, MMIO, PCIe UART devices simultaneously.
For io-mapped instances, io-mapped DTS property need to be added in dtsi.
drivers: serial: driver init level based on parent node Boot level based on parent node (PCI or no PCI device). Some platforms the PCI bus driver depends on ACPI sub system to retrieve platform information such as interrupt routing information. But ACPI sub system currently support only post kernel and hence such platforms the UART driver instance init should be invoked only post kernel in case parent node is PCI. Signed-off-by: Najumon B.A <najumon.ba@intel.com>
2023-06-20 10:17:42 +02:00
config UART_NS16550_PARENT_INIT_LEVEL
bool "Boot level based on parent node"
default y if ACPI
help
Boot level based on parent node (PCI or no PCI device). Some platforms the
PCI bus driver depends on ACPI sub system to retrieve platform information
such as interrupt routing information. But ACPI sub system currently support
only post kernel and hence such platforms the UART driver instance init
should be invoked only post kernel in case parent node is PCI.
uart: ns16550: add workaround to re-enable interrupts in ISR In some configurations (e.g. edge interrupt triggers), an interruptible event occurs during ISR and the host interrupt controller does not see the new event due to IIR is constantly asserting interrupts. For example, the callback handles RX and then TX. If another character comes in before end of TX processing (TX interrupt still asserts while raising RX interrupt), the host interrupt controller may not see this new event. So if needed, the IER is being toggled to re-assert interrupts at the end of ISR to nudge the host interrupt controller to fire the ISR again. Signed-off-by: Daniel Leung <daniel.leung@intel.com>
2021-09-27 20:04:55 +02:00
menu "NS16550 Workarounds"
config UART_NS16550_WA_ISR_REENABLE_INTERRUPT
bool "Re-enable interrupts by toggling IER at end of ISR"
depends on UART_INTERRUPT_DRIVEN
help
In some configurations (e.g. edge interrupt triggers),
an interruptible event occurs during ISR and the host interrupt
controller does not see the new event due to IIR is constantly
asserting interrupts. For example, the callback handles RX and
then TX. If another character comes in before end of TX processing
(TX interrupt still asserts while raising RX interrupt), the host
interrupt controller may not see this new event. So if needed,
the IER is being toggled to re-assert interrupts at the end of ISR
to nudge the host interrupt controller to fire the ISR again.
endmenu
drivers: uart: ns16550: Clean up Kconfig dependency usage Use a dependency block instead of specifying a UART_NS16550 dependency for each individual opton. This doesn't save many lines right now, but may do so once more options are added. Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2020-12-19 16:27:22 +01:00
endif # UART_NS16550
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