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: Alexander Aring <alex.ar...@gmail.com>
---
drivers/net/ieee802154/at86rf230.c | 48 +++++++++++++++++++++++++++++++++++++-
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ieee802154/at86rf230.c
b/drivers/net/ieee802154/at86rf230.c
index cebaf77..8e1c0ea 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -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>
@@ -1033,6 +1034,40 @@ 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;
@@ -1051,7 +1086,7 @@ 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;
@@ -1229,8 +1264,19 @@ 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,
},
--
1.9.0
------------------------------------------------------------------------------
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