1 files changed, 31 insertions, 16 deletions

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index fc315ddea61c..cf098889ba64 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -219,6 +219,9 @@ struct at86rf230_local {
 #define IRQ_PLL_UNL	(1 << 1)
 #define IRQ_PLL_LOCK	(1 << 0)
 
+#define IRQ_ACTIVE_HIGH	0
+#define IRQ_ACTIVE_LOW	1
+
 #define STATE_P_ON		0x00	/* BUSY */
 #define STATE_BUSY_RX		0x01
 #define STATE_BUSY_TX		0x02
@@ -726,11 +729,16 @@ static irqreturn_t at86rf230_isr(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+static int at86rf230_irq_polarity(struct at86rf230_local *lp, int pol)
+{
+	return at86rf230_write_subreg(lp, SR_IRQ_POLARITY, pol);
+}
 
 static int at86rf230_hw_init(struct at86rf230_local *lp)
 {
+	struct at86rf230_platform_data *pdata = lp->spi->dev.platform_data;
+	int rc, irq_pol;
 	u8 status;
-	int rc;
 
 	rc = at86rf230_read_subreg(lp, SR_TRX_STATUS, &status);
 	if (rc)
@@ -748,6 +756,16 @@ static int at86rf230_hw_init(struct at86rf230_local *lp)
 		dev_info(&lp->spi->dev, "Status: %02x\n", status);
 	}
 
+	/* configure irq polarity, defaults to high active */
+	if (pdata->irq_type & (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_LOW))
+		irq_pol = IRQ_ACTIVE_LOW;
+	else
+		irq_pol = IRQ_ACTIVE_HIGH;
+
+	rc = at86rf230_irq_polarity(lp, irq_pol);
+	if (rc)
+		return rc;
+
 	rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, 0xff); /* IRQ_TRX_UR |
 							     * IRQ_CCA_ED |
 							     * IRQ_TRX_END |
@@ -798,37 +816,36 @@ static int at86rf230_hw_init(struct at86rf230_local *lp)
 	return 0;
 }
 
-static int at86rf230_fill_data(struct spi_device *spi)
+static void at86rf230_fill_data(struct spi_device *spi)
 {
 	struct at86rf230_local *lp = spi_get_drvdata(spi);
 	struct at86rf230_platform_data *pdata = spi->dev.platform_data;
 
-	if (!pdata) {
-		dev_err(&spi->dev, "no platform_data\n");
-		return -EINVAL;
-	}
-
 	lp->rstn = pdata->rstn;
 	lp->slp_tr = pdata->slp_tr;
 	lp->dig2 = pdata->dig2;
-
-	return 0;
 }
 
 static int at86rf230_probe(struct spi_device *spi)
 {
+	struct at86rf230_platform_data *pdata;
 	struct ieee802154_dev *dev;
 	struct at86rf230_local *lp;
 	u8 man_id_0, man_id_1;
-	int rc;
+	int rc, supported = 0;
 	const char *chip;
-	int supported = 0;
 
 	if (!spi->irq) {
 		dev_err(&spi->dev, "no IRQ specified\n");
 		return -EINVAL;
 	}
 
+	pdata = spi->dev.platform_data;
+	if (!pdata) {
+		dev_err(&spi->dev, "no platform_data\n");
+		return -EINVAL;
+	}
+
 	dev = ieee802154_alloc_device(sizeof(*lp), &at86rf230_ops);
 	if (!dev)
 		return -ENOMEM;
@@ -851,9 +868,7 @@ static int at86rf230_probe(struct spi_device *spi)
 
 	spi_set_drvdata(spi, lp);
 
-	rc = at86rf230_fill_data(spi);
-	if (rc)
-		goto err_fill;
+	at86rf230_fill_data(spi);
 
 	rc = gpio_request(lp->rstn, "rstn");
 	if (rc)
@@ -928,7 +943,8 @@ static int at86rf230_probe(struct spi_device *spi)
 	if (rc)
 		goto err_gpio_dir;
 
-	rc = request_irq(spi->irq, at86rf230_isr, IRQF_SHARED,
+	rc = request_irq(spi->irq, at86rf230_isr,
+			 IRQF_SHARED | pdata->irq_type,
 			 dev_name(&spi->dev), lp);
 	if (rc)
 		goto err_gpio_dir;
@@ -948,7 +964,6 @@ err_gpio_dir:
 err_slp_tr:
 	gpio_free(lp->rstn);
 err_rstn:
-err_fill:
 	spi_set_drvdata(spi, NULL);
 	mutex_destroy(&lp->bmux);
 	ieee802154_free_device(lp->dev);