If CONFIG_SPI_STATS is enabled, the device state for all SPI controller
drivers must contain the SPI stats. This space is allocated by calling
Z_SPI_INIT_FN as part of the device definition; this is done automatically
when using SPI_DEVICE_DT_DEFINE instead of DEVICE_DT_DEFINE. If space for
statistics is not properly allocated but CONFIG_SPI_STATS is enabled, an
unexpected write to memory outside of the stats region may occur on a SPI
transfer. This commit uses SPI_DEVICE_DT_DEFINE or
SPI_DEVICE_DT_INST_DEFINE for all in-tree SPI controller drivers.
Signed-off-by: Dane Wagner <dane.wagner@gmail.com>
Add missing braces to comply with MISRA C:2012 Rule 15.6 and
also following Zephyr's style guideline.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Add missing braces to comply with MISRA C:2012 Rule 15.6 and
also following Zephyr's style guideline.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
This change marks each instance of the 'spi_driver_api' as 'static const'.
The rationale is that 'spi_driver_api' is used for declaring internal
module interfaces and is not intended to be modified at runtime.
By using 'static const', we ensure immutability, leading to usage of only
.rodata and a reduction in the .data area.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Changed how to get clock frequency for PL022
Signed-off-by: Andrei-Edward Popa <andrei.popa105@yahoo.com>
Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@gmail.com>
Removes the shadow variable found by -Wshadow. The value of this
variable is the same throughout the for loop, so there is no
need to assign it again for each iteration.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
Clean up occurrences of "#if IS_ENABLED(CONFIG_FOO)" an replace
with classical "#if defined(CONFIG_FOO)".
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Change automated searching for files using "IRQ_CONNECT()" API not
including <zephyr/irq.h>.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
If the thread that submits data over spi is interrupted by a higher
priority thread while pushing data to the tx fifo the hardware pushes
data to spi and frees up space in the fifo. In this case more than
8 Bytes are written to the tx fifo and bytes in the rx fifo get lost
before they are collected in the rx while loop.
To avoid this, the tx loop is exited after a maximum of 8 bytes and the
rx loop will run until it collected all bytes from the rx fifo.
Signed-off-by: Gerhard Jörges <joerges@metratec.com>
Adds a new spi_transcieve_cb API which enables asynchronous
SPI transactions with callback notification.
The exist spi_transcieve_async API remains and uses the new
spi_transcieve_cb API to provide a k_poll_signal notifier.
The driver API changes to provide a callback and userdata
parameter to async transcieve. All drivers in the tree
have been updated to the change.
Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
Add fundamental feature support for PL022 SPI peripheral.
This commit implements synchronous transfer with 8bit-MSB format.
Optional functions are not currently implemented yet.
- interrupt based transfer is not implemented yet.
- DMA transfer is not implemented yet.
- Slave mode is not implemented yet.
- Currently support only 8-bit data transfer.
Hardware limitation:
- LSB-first format is not supported by hardware.
Signed-off-by: TOKITA Hiroshi <tokita.hiroshi@fujitsu.com>
