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path: root/drivers/net/ieee802154/at86rf230.c
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Diffstat (limited to 'drivers/net/ieee802154/at86rf230.c')
-rw-r--r--drivers/net/ieee802154/at86rf230.c151
1 files changed, 117 insertions, 34 deletions
diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index fc1687ea4a42..6f10b4964726 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -51,7 +51,7 @@ struct at86rf230_local {
struct ieee802154_dev *dev;
spinlock_t lock;
- bool irq_disabled;
+ bool irq_busy;
bool is_tx;
};
@@ -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
@@ -233,8 +236,8 @@ struct at86rf230_local {
#define STATE_SLEEP 0x0F
#define STATE_BUSY_RX_AACK 0x11
#define STATE_BUSY_TX_ARET 0x12
-#define STATE_BUSY_RX_AACK_ON 0x16
-#define STATE_BUSY_TX_ARET_ON 0x19
+#define STATE_RX_AACK_ON 0x16
+#define STATE_TX_ARET_ON 0x19
#define STATE_RX_ON_NOCLK 0x1C
#define STATE_RX_AACK_ON_NOCLK 0x1D
#define STATE_BUSY_RX_AACK_NOCLK 0x1E
@@ -544,7 +547,7 @@ at86rf230_xmit(struct ieee802154_dev *dev, struct sk_buff *skb)
unsigned long flags;
spin_lock(&lp->lock);
- if (lp->irq_disabled) {
+ if (lp->irq_busy) {
spin_unlock(&lp->lock);
return -EBUSY;
}
@@ -619,6 +622,52 @@ err:
return -EINVAL;
}
+static int
+at86rf230_set_hw_addr_filt(struct ieee802154_dev *dev,
+ struct ieee802154_hw_addr_filt *filt,
+ unsigned long changed)
+{
+ struct at86rf230_local *lp = dev->priv;
+
+ if (changed & IEEE802515_AFILT_SADDR_CHANGED) {
+ dev_vdbg(&lp->spi->dev,
+ "at86rf230_set_hw_addr_filt called for saddr\n");
+ __at86rf230_write(lp, RG_SHORT_ADDR_0, filt->short_addr);
+ __at86rf230_write(lp, RG_SHORT_ADDR_1, filt->short_addr >> 8);
+ }
+
+ if (changed & IEEE802515_AFILT_PANID_CHANGED) {
+ dev_vdbg(&lp->spi->dev,
+ "at86rf230_set_hw_addr_filt called for pan id\n");
+ __at86rf230_write(lp, RG_PAN_ID_0, filt->pan_id);
+ __at86rf230_write(lp, RG_PAN_ID_1, filt->pan_id >> 8);
+ }
+
+ if (changed & IEEE802515_AFILT_IEEEADDR_CHANGED) {
+ dev_vdbg(&lp->spi->dev,
+ "at86rf230_set_hw_addr_filt called for IEEE addr\n");
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_0, filt->ieee_addr[7]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_1, filt->ieee_addr[6]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_2, filt->ieee_addr[5]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_3, filt->ieee_addr[4]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_4, filt->ieee_addr[3]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_5, filt->ieee_addr[2]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_6, filt->ieee_addr[1]);
+ at86rf230_write_subreg(lp, SR_IEEE_ADDR_7, filt->ieee_addr[0]);
+ }
+
+ if (changed & IEEE802515_AFILT_PANC_CHANGED) {
+ dev_vdbg(&lp->spi->dev,
+ "at86rf230_set_hw_addr_filt called for panc change\n");
+ if (filt->pan_coord)
+ at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 1);
+ else
+ at86rf230_write_subreg(lp, SR_AACK_I_AM_COORD, 0);
+ }
+
+ return 0;
+}
+
static struct ieee802154_ops at86rf230_ops = {
.owner = THIS_MODULE,
.xmit = at86rf230_xmit,
@@ -626,6 +675,7 @@ static struct ieee802154_ops at86rf230_ops = {
.set_channel = at86rf230_channel,
.start = at86rf230_start,
.stop = at86rf230_stop,
+ .set_hw_addr_filt = at86rf230_set_hw_addr_filt,
};
static void at86rf230_irqwork(struct work_struct *work)
@@ -658,8 +708,16 @@ static void at86rf230_irqwork(struct work_struct *work)
}
spin_lock_irqsave(&lp->lock, flags);
- lp->irq_disabled = 0;
+ lp->irq_busy = 0;
spin_unlock_irqrestore(&lp->lock, flags);
+}
+
+static void at86rf230_irqwork_level(struct work_struct *work)
+{
+ struct at86rf230_local *lp =
+ container_of(work, struct at86rf230_local, irqwork);
+
+ at86rf230_irqwork(work);
enable_irq(lp->spi->irq);
}
@@ -668,10 +726,8 @@ static irqreturn_t at86rf230_isr(int irq, void *data)
{
struct at86rf230_local *lp = data;
- disable_irq_nosync(irq);
-
spin_lock(&lp->lock);
- lp->irq_disabled = 1;
+ lp->irq_busy = 1;
spin_unlock(&lp->lock);
schedule_work(&lp->irqwork);
@@ -679,11 +735,23 @@ static irqreturn_t at86rf230_isr(int irq, void *data)
return IRQ_HANDLED;
}
+static irqreturn_t at86rf230_isr_level(int irq, void *data)
+{
+ disable_irq_nosync(irq);
+
+ return at86rf230_isr(irq, data);
+}
+
+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)
@@ -701,12 +769,17 @@ static int at86rf230_hw_init(struct at86rf230_local *lp)
dev_info(&lp->spi->dev, "Status: %02x\n", status);
}
- rc = at86rf230_write_subreg(lp, SR_IRQ_MASK, 0xff); /* IRQ_TRX_UR |
- * IRQ_CCA_ED |
- * IRQ_TRX_END |
- * IRQ_PLL_UNL |
- * IRQ_PLL_LOCK
- */
+ /* 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, IRQ_TRX_END);
if (rc)
return rc;
@@ -751,37 +824,38 @@ 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;
+ u8 man_id_0, man_id_1, status;
+ irq_handler_t irq_handler;
+ work_func_t irq_worker;
+ 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;
@@ -791,23 +865,28 @@ static int at86rf230_probe(struct spi_device *spi)
lp->spi = spi;
- dev->priv = lp;
dev->parent = &spi->dev;
dev->extra_tx_headroom = 0;
/* We do support only 2.4 Ghz */
dev->phy->channels_supported[0] = 0x7FFF800;
dev->flags = IEEE802154_HW_OMIT_CKSUM;
+ if (pdata->irq_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) {
+ irq_worker = at86rf230_irqwork;
+ irq_handler = at86rf230_isr;
+ } else {
+ irq_worker = at86rf230_irqwork_level;
+ irq_handler = at86rf230_isr_level;
+ }
+
mutex_init(&lp->bmux);
- INIT_WORK(&lp->irqwork, at86rf230_irqwork);
+ INIT_WORK(&lp->irqwork, irq_worker);
spin_lock_init(&lp->lock);
init_completion(&lp->tx_complete);
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)
@@ -882,18 +961,23 @@ 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, irq_handler,
+ IRQF_SHARED | pdata->irq_type,
dev_name(&spi->dev), lp);
if (rc)
goto err_gpio_dir;
+ /* Read irq status register to reset irq line */
+ rc = at86rf230_read_subreg(lp, RG_IRQ_STATUS, 0xff, 0, &status);
+ if (rc)
+ goto err_irq;
+
rc = ieee802154_register_device(lp->dev);
if (rc)
goto err_irq;
return rc;
- ieee802154_unregister_device(lp->dev);
err_irq:
free_irq(spi->irq, lp);
flush_work(&lp->irqwork);
@@ -903,7 +987,6 @@ 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);
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-24 11:40:20 +0000