Now that device_api attribute is unmodified at runtime, as well as all
the other attributes, it is possible to switch all device driver
instance to be constant.
A coccinelle rule is used for this:
@r_const_dev_1
disable optional_qualifier
@
@@
-struct device *
+const struct device *
@r_const_dev_2
disable optional_qualifier
@
@@
-struct device * const
+const struct device *
Fixes#27399
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Add initial Atmel at86rf2xx transceiver driver. This driver uses device
tree to configure the physical interface. The driver had capability to
use multiple transceiver and systems with multiple bands can be used.
With this, 2.4GHz ISM and Sub-Giga can be used simultaneous.
Below a valid DT example. This samples assume same SPI port with two
transceivers.
&spi0 {
status = "okay";
label = "SPI_RF2XX";
cs-gpios = <&porta 31 0 &porta 30 0>;
rf2xx@0 {
compatible = "atmel,rf2xx";
reg = <0x0>;
label = "RF2XX_0";
spi-max-frequency = <7800000>;
irq-gpios = <&portb 2 0>;
reset-gpios = <&porta 3 0>;
slptr-gpios = <&portb 3 0>;
status = "okay";
};
rf2xx@1 {
compatible = "atmel,rf2xx";
reg = <0x1>;
label = "RF2XX_1";
spi-max-frequency = <7800000>;
irq-gpios = <&portb 4 0>;
reset-gpios = <&porta 4 0>;
slptr-gpios = <&portb 4 0>;
status = "okay";
};
};
At the moment driver assume two transceiver are enouth for majority of
appications. Sub-Giga band will be enabled in future.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
