[PATCH 0/4] Misc MRF24J40 Fixes

[PATCH 0/4] Misc MRF24J40 Fixes

[Alan Ott]

These are fairly straight-forward.

Alan Ott (4):
  mrf24j40: pinctrl support
  mrf24j40: Warn if transmit interrupts timeout
  mrf24j40: Increase max SPI speed to 10MHz
  mrf24j40: Fix byte-order of IEEE address

 drivers/net/ieee802154/mrf24j40.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

-- 
1.7.11.2


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[PATCH 1/4] mrf24j40: pinctrl support

[Alan Ott]

Activate pinctrl settings when used with a DT system.

Signed-off-by: Alan Ott <alan@signal11.us>
---
 drivers/net/ieee802154/mrf24j40.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 3f2c7aa..3106895 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -22,6 +22,7 @@
 #include <linux/spi/spi.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/pinctrl/consumer.h>
 #include <net/wpan-phy.h>
 #include <net/mac802154.h>
 
@@ -623,6 +624,7 @@ static int mrf24j40_probe(struct spi_device *spi)
 	int ret = -ENOMEM;
 	u8 val;
 	struct mrf24j40 *devrec;
+	struct pinctrl *pinctrl;
 
 	printk(KERN_INFO "mrf24j40: probe(). IRQ: %d\n", spi->irq);
 
@@ -633,6 +635,11 @@ static int mrf24j40_probe(struct spi_device *spi)
 	if (!devrec->buf)
 		goto err_buf;
 
+	pinctrl = devm_pinctrl_get_select_default(&spi->dev);
+	if (IS_ERR(pinctrl))
+		dev_warn(&spi->dev,
+			"pinctrl pins are not configured from the driver");
+
 	spi->mode = SPI_MODE_0; /* TODO: Is this appropriate for right here? */
 	if (spi->max_speed_hz > MAX_SPI_SPEED_HZ)
 		spi->max_speed_hz = MAX_SPI_SPEED_HZ;
-- 
1.7.11.2

[PATCH 2/4] mrf24j40: Warn if transmit interrupts timeout

[Alan Ott]

Issue a warning if a transmit complete interrupt doesn't happen in time.

Signed-off-by: Alan Ott <alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
---
 drivers/net/ieee802154/mrf24j40.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 3106895..582c0a3 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -362,6 +362,7 @@ static int mrf24j40_tx(struct ieee802154_dev *dev, struct sk_buff *skb)
 	if (ret == -ERESTARTSYS)
 		goto err;
 	if (ret == 0) {
+		dev_warn(printdev(devrec), "Timeout waiting for TX interrupt\n");
 		ret = -ETIMEDOUT;
 		goto err;
 	}
-- 
1.7.11.2


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[PATCH 3/4] mrf24j40: Increase max SPI speed to 10MHz

[Alan Ott]

Upon consulting the datasheet further, it does indicates a maximum speed
for SCK at 10MHz.

Signed-off-by: Alan Ott <alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
---
 drivers/net/ieee802154/mrf24j40.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 582c0a3..b4f9b67 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -92,9 +92,8 @@ struct mrf24j40 {
 #define MRF24J40_READLONG(reg) (1 << 15 | (reg) << 5)
 #define MRF24J40_WRITELONG(reg) (1 << 15 | (reg) << 5 | 1 << 4)
 
-/* Maximum speed to run the device at. TODO: Get the real max value from
- * someone at Microchip since it isn't in the datasheet. */
-#define MAX_SPI_SPEED_HZ 1000000
+/* The datasheet indicates the theoretical maximum for SCK to be 10MHz */
+#define MAX_SPI_SPEED_HZ 10000000
 
 #define printdev(X) (&X->spi->dev)
 
-- 
1.7.11.2


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[PATCH 4/4] mrf24j40: Fix byte-order of IEEE address

[Alan Ott]

Load the 64-bit Extended (IEEE) address into the hardware in the proper
byte order.

Signed-off-by: Alan Ott <alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
---
 drivers/net/ieee802154/mrf24j40.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index b4f9b67..0ca8f88 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -478,7 +478,7 @@ static int mrf24j40_filter(struct ieee802154_dev *dev,
 		int i;
 		for (i = 0; i < 8; i++)
 			write_short_reg(devrec, REG_EADR0+i,
-					filt->ieee_addr[i]);
+					filt->ieee_addr[7-i]);
 
 #ifdef DEBUG
 		printk(KERN_DEBUG "Set long addr to: ");
-- 
1.7.11.2


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Re: [PATCH 0/4] Misc MRF24J40 Fixes

[David Miller]

From: Alan Ott <alan@signal11.us>
Date: Mon, 18 Mar 2013 18:06:39 -0400

> These are fairly straight-forward.

All applied to net-next, thanks.