The UART port base address, IRQ line and clock frequency are static
per SoC, so there is no need to make them configurable in Kconfig.
Change-Id: I79b142414143bc5ef585d3136a00375233de1723
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This patch replaces all occurences of the macro DEV_OK by the actual
value 0 at the driver level. So this patch touch the files under
drivers/, include/ and samples/drivers/.
This patch is part of the effort to transition from DEV_* codes to
errno.h codes.
Change-Id: I69980ecb9755f2fb026de5668ae9c21a4ae62d1e
Signed-off-by: Andre Guedes <andre.guedes@intel.com>
The peripherals utilizing UART were required to register their own
ISR rountines. This means that all those peripherals drivers need
to know which IRQ line is attached to a UART controller, and all
the other config values required to register a ISR. This causes
scalibility issue as every board and peripherals have to define
those values.
Another reason for this patch is to support virtual serial ports.
Virtual serial ports do not have physical interrupt lines to
attach, and thus would not work.
This patch adds a simple callback mechanism, which calls a function
when UART interrupts are triggered. The low level plumbing still needs
to be done by the peripheral drivers, as these drivers may need to
access low level capability of UART to function correctly. This simply
moves the interrupt setup into the UART drivers themselves. By doing
this, the peripheral drivers do not need to know all the config values
to properly setup the interrupts and attaching the ISR. One drawback
is that this adds to the interrupt latency.
Note that this patch breaks backward compatibility in terms of
setting up interrupt for UART controller. How to use UART is still
the same.
This also addresses the following issues:
() UART driver for Atmel SAM3 currently does not support interrupts.
So remove the code from vector table. This will be updated when
there is interrupt support for the driver.
() Corrected some config options for Stellaris UART driver.
This was tested with samples/shell on Arduino 101, and on QEMU
(Cortex-M3 and x86).
Origin: original code
Change-Id: Ib4593d8ccd711f4e97d388c7293205d213be1aec
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This is the last step before obsoleting DEVICE_DEFINE() and
DEVICE_INIT_CONFIG_DEFINE().
Change-Id: Ica4257662969048083ab9839872b4b437b8b351b
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Rename it to DEVICE_DEFINE() so that it fits in the 'device' namespace.
Change-Id: I3af3a39cf9154359b31d22729d0db9f710cd202b
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
Rename it to DEVICE_INIT_CONFIG_DEFINE(), because (a) it was not fitting
in any namespace and (b) it is not used to declare, but rather define a
object.
Change-Id: I1da5822f06b85a9fb024b5b184afd0ccc01012ec
Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
This API is not being used for anything, the interrupts for UART
drivers are all being configured statically. Saves code space as
gc-sections can't tell that these APIs are unused.
Some instances where IRQ/priority information was being saved in
data structures and never used fixed.
Change-Id: If56b4fdc251b80be9094ffcbac6f61e265ac2ffd
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This moves the baud rate and options fields out of the UART driver
config struct and into the driver data struct. This will allow
changing baud rate and options at runtime in the future.
Change-Id: I62ddea2f95e634f2d60eeb9537f960799fc9301f
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
The code to poke the system integration module to disable clock gating
for UARTs only works for UART0-3 since all the bits are in the same
register. However, clocks for UART4 and UART5 are controlled by
another register. This means that we have been writing to the wrong
bit for enabling UART4.
This patch fixes this issue, and moves the clock gating clock into
board initialization. The incorrect code has also been removed to
prevent accidental mis-use. The dev_data struct is no longer needed
for uart_k20, so that is removed as well.
Change-Id: I67845a417e43647bf0ffcbdbda34ce68fa887713
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Since all the necessary bits utilizing UART by index have moved to
use device name instead, the uart_devs[] can finally be removed.
Change-Id: Idbae6b46c0af9eef6c22c59e121e9d6a6b52426a
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Since the initialization is now done within driver, there is
no need to expose the port_init() function externally anymore.
After the consumers of port_init() have been updated. It is time
to perform the final step.
Change-Id: Iba7aeb056edd63ef3f9b47d3801a3e0eeb9b34d5
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
() Rename k20UartDrv.c to uart_k20.c. This is to follow the driver
naming convention.
() Move driver/serial/k20_uart.h to drivers/serial/uart_k20_priv.h
as this contains definitions private to the driver, and
should not be exposed in public include directory.
() Rename functions k20_uart_*() to uart_k20_*(), following
driver naming convention.
() Renames CONFIG_K20_UART_* to CONFIG_UART_K20_*
() 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.
Change-Id: If1be1fde083aba6ff68062db2059aef08617a286
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Daniel Leung