The I2C controller should have been already setup before this driver.
Since the only use right now is on Gelileo and I2C_DW driver. it is
safe to remove the i2c_configure() call now as the driver has default
configuration at boot.
Change-Id: Ia384e28871bf76dcfec899860f93da4bf0948ba6
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This adds the Kconfig option to specify default configuration
for the I2C controller during driver initialization.
During boot, the controller needs to be configured before
communication to slave devices can start. After boot,
an app can re-configure the controller if needed.
Change-Id: I7bf252f75a31943ae444e4d914f3a9a1a3f3d91f
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
There are devices that need are part of the architecture core the need
to be initialized prior to devices that are integrated around a core
to make up a complete SOC. Namely the interrupt controller in the SOC
must be configured in order to allow the integrated IP blocks drivers
to initialize correctly.
Change-Id: I0a91e08f98516a7b7dd402ffc6494a071f1326b2
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
This macro is legacy from an early implementation of the init system
before the pure level was split into early and late phases remove it
now to avoid confusion going forward.
Change-Id: I6720874c840c9e14888fd6f411a8182e7420ca29
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
This provides the API to manipulte the pin muxing, where
a single pin may provide different functions depending on
settings.
[DL: changed commit message.]
Change-Id: Ifd161137c062dff184024b5aa34737604911d09c
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This adds the driver for PCA9685 I2C-based PWM chip, and provides
basic PWM functionality.
Change-Id: I8c711d9b703fdaf5ccb23657e07495a95cbe16ee
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Fixes a build failure in designware gpio driver.
Change-Id: I90a540f56bff17ff56d0315356fde6d6c4d02407
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Register values are now being cached in memory, and are being used in
subsequent writes. This is to avoid reading from registers, as
we know what needs to be written to those registers all the time.
Change-Id: I9b344303c0cb9f28e974514ab674135004f68ea0
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
The _has_i2c_master() should return 1 if there is an I2C master.
The logic was incorrectly inverted. So fix it now.
Change-Id: Ic4bf44efc1f68644530a275f0c4e454740a2950a
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This adds the public APIs for PWM drivers. Also, this adds a Kconfig
and an empty makefile for drivers to extend.
Change-Id: I1cc0c908b6f5aeeb678b6368640d5b9a1cc9751d
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Following the naming convention established, private functions
should be prefixed with an _
Change-Id: Ib6006ba3a928da88b8b8c3324f7d4b833f736270
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Many of the i2c functions continue to exist in a format of
<IP>_<interface> and will now follow the <interface>_<IP>_
naming convention.
Change-Id: Ic7ec879105f5c06f0213f8d771b3811253c49658
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Clearing an interrupt in DesignWare is done by reading the port
not by writing to it. Original problem found by Dmitriy@WR.
Change-Id: I1de052632ec36e2d496c563e81307169e9dabcf4
Signed-off-by: Dan Kalowsky <daniel.kalowsky@intel.com>
Those ports uses different instructions to get accessed: in/out
instructions. It differs in many ways with memory access, and it's much
slower. It's unset by default, but some arch exposing legacy UART ports
might need it.
Change-Id: I06f2a7c7812e720863957bd20d5c2b8b02c10734
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The header file was renamed in previous commits, but the #include
referred to a non-existing file. This causes compilation error.
This uses the correct file.
Change-Id: Ibda7dbca82323d99dcff71cbee8f642f6cd611d6
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This makes variables readable and consistent with other drivers
we have.
Change-Id: I816f133279497eafd5d5614013c8d224d5909590
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
This driver naming is an exception which compared with all other drivers
we have. To keep things consistent the configuration options and variables
are renamed to <type>_<name>.
Change-Id: Ib95aa09630a507848f78d8f2c28706b545eed06d
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Don't give on the semaphore if the ring buffer is full.
Fix a missing newline in a debug message.
Change-Id: Ic0030365665c32cc9f1c641f9dacffd1a1915b09
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
Some platforms send over \r\n for newlines, just send over the \n.
Change-Id: Ia6072eb3719a4c7dd828457cf1634d16f4eec38a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This adds a simple driver for MMIO-based GPIO ports.
It does not trigger any interrupts due to pin level at this moment.
Change-Id: I0c439f221988817e4be72653c68257ef6ace5bde
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This adds the driver for I2C-based PCAL9535A GPIO chip.
This currently only enables minimal set of features of the chip for
very simple input/output operations, and does not support interrupt
yet.
Change-Id: I32ea07a71a38866280a96e68cff49cb0df12b85d
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This change puts the DW GPIO Kconfig selections inside GPIO menu.
This also groups all DW GPIO related selections under GPIO_DW.
Change-Id: I776f3f6b89e1a4dc366648f8290abb27de9eceb8
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
This was missing an include file, which caused the macro to not
be expanded correctly. Including init.h fixes the issue.
Change-Id: I6b190e0c75828d9b6eb42a84c213dfc174510740
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Change the IOAPIC driver to be initialized directly from the init
system. The function signature of _ioapic_init() function is updated
accordingly.
Change-Id: I2f824ac745926966eebb23f60445a41e1df9eb8f
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Change the LOAPIC driver to be initialized directly from the init
system. The function signature of _loapic_init() function is updated
accordingly.
Change-Id: I5ed26d53524c8526d413a05ac9a7a58dd4264c5a
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Change the PIC driver to be initialized by the init system. To be
initialized by the init system the function signature of the
_i8259_init() function needs to be changed to the standard *_init()
function signature specified by the device model.
Change-Id: I63bf1cd0ce78920fa20da94f5966e5aab4bf41b2
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
This introduces a generic driver set for console messages routed over
inter-processor interrupt (IPI) channels. These drivers bind to a
low-level IPI driver instance for the actual transport of messages.
ipi_console_sender installs printk and/or stdout hooks to forward
messages over IPI. There is currently no buffering on the sending side.
ipi_console_receiver installs an IPI callback which stashes incoming
characters into a ring buffer, which is monitored by a nanokernel
fiber. The fiber buffers the characters on a per-line basis and sends
them to either printk or stdout. Multiple instances of this driver
may be created in case you need to receive console data from multiple
CPUs.
Change-Id: Icebc110794fbe040f975101cd2ae6e78fb38645a
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
We are introducing other kinds of drivers which support a console
that isn't over a UART.
Change-Id: I0dddbdce958437b5709c5ab26252ed47d030413d
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
The code fragment to bind the instances of the I2C driver is not
platform specific but is driver specific.
All the information required to bind a driver instance comes from
CONFIG_ variables. Having the binding code with the driver code
avoids duplicating the code fragments in each platform where the
driver may be used.
Change-Id: I9ea132c9340437ccb292bb8f3fa3d3a2b2a794db
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
The code fragment to bind the instances of the SPI driveri is not
platform specific but is driver specific.
All the information required to bind a driver instance comes from
CONFIG_ variables. Having the binding code with the driver code
avoids duplicating the code fragments in each platform where the
driver may be used.
Change-Id: Iff40227e3e25d431ae870d585445971f35d934dd
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
The code fragment to bind the instances of the GPIO driver were being
replicated in every platform_config.c This code is not platform
specific but is driver specific.
All the information required to bind a driver instance comes from
CONFIG_ variables. Having the binding code with the driver code
avoids duplicating the code fragments in each platform where the
driver may be used.
Change-Id: Ie07a3d12d25201e82ce7074455e6c036f463851b
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
This buffer can be examined at runtime with a debugger to see what
is going on. Helpful if there are no other working console drivers
on the system.
Change-Id: I759467a57d16204b4b316c4f6fa8b7d5e1d1d236
Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
When configured as GPIO_ACCESS_BY_PIN, the callback should
be called only if the pin is enabled and received an interrupt.
Change-Id: I7addeb57c8d46dddc027e9b82a92654cd210ade1
Signed-off-by: Ricardo de Almeida Gonzaga <ricardo.gonzaga@intel.com>
The send() callback of HCI drivers should be returning 0 on success
and a negative value on error. The uart_fifo_fill() function returns
the number of transmitted bytes so it can not be directly mapped to
the send() return value.
Change-Id: I59be478c1985f44a46f2a9613f61471423b0e63a
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Rewrites the LOAPIC timer tickless idle implementation to cover all edge cases.
Change-Id: Ide0a235f298dfc5c75a090a45d1bf8275d81e248
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
Removes tickless idle skew calculation as it is not particularly useful.
The actual "skew" may vary wildly depending upon whether cache is involved
or not.
Change-Id: Ie5c966eba5cdc3cff2610d4c1f3bb673c83ec8b7
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>
