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Commit fa2d3e94 authored by Alexander Aring's avatar Alexander Aring Committed by David S. Miller
Browse files

at86rf230: add support for devicetree 



This patch adds devicetree support for the at86rf230 driver.

Possible gpios to configure are "reset-gpio" and "sleep-gpio".
Also add support to configure the "irq-type" for the irq polarity
register.

Signed-off-by: default avatarAlexander Aring <alex.aring@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3fa27571

drivers/net/ieee802154/at86rf230.c

+47 −1
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include <linux/spi/spi.h>

#include <linux/spi/at86rf230.h>

#include <linux/skbuff.h>

#include <linux/of_gpio.h>



#include <net/mac802154.h>

#include <net/wpan-phy.h>
@@ -1035,6 +1036,40 @@ static int at86rf230_hw_init(struct at86rf230_local *lp) 
	return 0;

}



static struct at86rf230_platform_data *

at86rf230_get_pdata(struct spi_device *spi)

{

	struct at86rf230_platform_data *pdata;

	const char *irq_type;



	if (!IS_ENABLED(CONFIG_OF) || !spi->dev.of_node)

		return spi->dev.platform_data;



	pdata = devm_kzalloc(&spi->dev, sizeof(*pdata), GFP_KERNEL);

	if (!pdata)

		goto done;



	pdata->rstn = of_get_named_gpio(spi->dev.of_node, "reset-gpio", 0);

	pdata->slp_tr = of_get_named_gpio(spi->dev.of_node, "sleep-gpio", 0);



	pdata->irq_type = IRQF_TRIGGER_RISING;

	of_property_read_string(spi->dev.of_node, "irq-type", &irq_type);

	if (!strcmp(irq_type, "level-high"))

		pdata->irq_type = IRQF_TRIGGER_HIGH;

	else if (!strcmp(irq_type, "level-low"))

		pdata->irq_type = IRQF_TRIGGER_LOW;

	else if (!strcmp(irq_type, "edge-rising"))

		pdata->irq_type = IRQF_TRIGGER_RISING;

	else if (!strcmp(irq_type, "edge-falling"))

		pdata->irq_type = IRQF_TRIGGER_FALLING;

	else

		dev_warn(&spi->dev, "wrong irq-type specified using edge-rising\n");



	spi->dev.platform_data = pdata;

done:

	return pdata;

}



static int at86rf230_probe(struct spi_device *spi)

{

	struct at86rf230_platform_data *pdata;
@@ -1053,7 +1088,7 @@ static int at86rf230_probe(struct spi_device *spi) 
		return -EINVAL;

	}



	pdata = spi->dev.platform_data;

	pdata = at86rf230_get_pdata(spi);

	if (!pdata) {

		dev_err(&spi->dev, "no platform_data\n");

		return -EINVAL;
@@ -1231,8 +1266,19 @@ static int at86rf230_remove(struct spi_device *spi) 
	return 0;

}



#if IS_ENABLED(CONFIG_OF)

static struct of_device_id at86rf230_of_match[] = {

	{ .compatible = "atmel,at86rf230", },

	{ .compatible = "atmel,at86rf231", },

	{ .compatible = "atmel,at86rf233", },

	{ .compatible = "atmel,at86rf212", },

	{ },

};

#endif



static struct spi_driver at86rf230_driver = {

	.driver = {

		.of_match_table = of_match_ptr(at86rf230_of_match),

		.name	= "at86rf230",

		.owner	= THIS_MODULE,

	},