Some boards may include an APA102 LED on an existing SPI bus. With
additional circuitry, chip select is supported where the APA102
lacks a built in CS pin.
This patch allows CS to be defined in the devicetree (through .dts
files) and utilised in the apa102.c driver if it's available. Preserving
old behaviour if no chip select is defined.
Signed-off-by: Roman Vaughan <nzsmartie@gmail.com>
move spi.h to drivers/spi.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
move led_strip.h to drivers/led_strip.h and
create a shim for backward-compatibility.
No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.
Related to #16539
Signed-off-by: Anas Nashif <anas.nashif@intel.com>
Change code from using now deprecated DT_<COMPAT>_<INSTANCE>_<PROP>
defines to using DT_INST_<INSTANCE>_<COMPAT>_<PROP>.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Convert apa102 led_strip driver to use new defines so we can remove
the dts_fixup.h code for it.
Also update the driver to set the slave spi address as specified by the
device tree.
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
tx_bufs/tx_count and rx_bufs/rx_count can be hold in another dedicated
structure, thus reducing the number of parameters to transceive. This
permits to avoid using the stack when calling transceive.
Since we saved parameters, we can expose back the struct device pointer,
to stay consistent with other device driver APIs.
Fixes#5839
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
The APA102 is a RGB LED with integrated controller. LEDs can be
daisy-chained and use SPI for communication. The SPI port is
configured via Device Tree.
Tested on the Adafruit Trinket M0.
Signed-off-by: Michael Hope <mlhx@google.com>
Michael Hope