From: Varka Bhadram <varkabhadram@gmail.com>
To: alex.aring@gmail.com
Cc: alan@signal11.us, linux-zigbee-devel@lists.sourceforge.net,
alex.bluesman.smirnov@gmail.com, dbaryshkov@gmail.com,
netdev@vger.kernel.org, davem@davemloft.net,
Varka Bhadram <varkab@cdac.in>
Subject: [PATCH] mrf24j40: seperate mrf24j40 h/w init and add checkings
Date: Wed, 23 Apr 2014 18:41:56 +0530 [thread overview]
Message-ID: <1398258716-18319-1-git-send-email-varkab@cdac.in> (raw)
Hai Alex,
I followed the process that you mailed earlier, thnks for that.
I am expecting the mail from Alan about the changes.
Thank you,
Varka Bhadram.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
---
drivers/net/ieee802154/mrf24j40.c | 115 ++++++++++++++++++++++++++++---------
1 file changed, 89 insertions(+), 26 deletions(-)
diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index 246befa..4a9a1ee 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -609,10 +609,95 @@ out:
return IRQ_HANDLED;
}
+static int mrf24j40_hw_init(struct mrf24j40 *devrec)
+{
+ int ret;
+ u8 val;
+
+ /* Initialize the device.
+ From datasheet section 3.2: Initialization. */
+ ret = write_short_reg(devrec, REG_SOFTRST, 0x07);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_PACON2, 0x98);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_TXSTBL, 0x95);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON0, 0x03);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON1, 0x01);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON2, 0x80);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON6, 0x90);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON7, 0x80);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_RFCON8, 0x10);
+ if (ret)
+ goto err_ret;
+
+ ret = write_long_reg(devrec, REG_SLPCON1, 0x21);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_BBREG2, 0x80);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_CCAEDTH, 0x60);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_BBREG6, 0x40);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_RFCTL, 0x04);
+ if (ret)
+ goto err_ret;
+
+ ret = write_short_reg(devrec, REG_RFCTL, 0x0);
+ if (ret)
+ goto err_ret;
+
+ udelay(192);
+
+ /* Set RX Mode. RXMCR<1:0>: 0x0 normal, 0x1 promisc, 0x2 error */
+ ret = read_short_reg(devrec, REG_RXMCR, &val);
+ if (ret)
+ goto err_ret;
+
+ val &= ~0x3; /* Clear RX mode (normal) */
+
+ ret = write_short_reg(devrec, REG_RXMCR, val);
+ if (ret)
+ goto err_ret;
+
+ return 0;
+
+err_ret:
+ return ret;
+}
+
static int mrf24j40_probe(struct spi_device *spi)
{
int ret = -ENOMEM;
- u8 val;
struct mrf24j40 *devrec;
printk(KERN_INFO "mrf24j40: probe(). IRQ: %d\n", spi->irq);
@@ -649,31 +734,9 @@ static int mrf24j40_probe(struct spi_device *spi)
if (ret)
goto err_register_device;
- /* Initialize the device.
- From datasheet section 3.2: Initialization. */
- write_short_reg(devrec, REG_SOFTRST, 0x07);
- write_short_reg(devrec, REG_PACON2, 0x98);
- write_short_reg(devrec, REG_TXSTBL, 0x95);
- write_long_reg(devrec, REG_RFCON0, 0x03);
- write_long_reg(devrec, REG_RFCON1, 0x01);
- write_long_reg(devrec, REG_RFCON2, 0x80);
- write_long_reg(devrec, REG_RFCON6, 0x90);
- write_long_reg(devrec, REG_RFCON7, 0x80);
- write_long_reg(devrec, REG_RFCON8, 0x10);
- write_long_reg(devrec, REG_SLPCON1, 0x21);
- write_short_reg(devrec, REG_BBREG2, 0x80);
- write_short_reg(devrec, REG_CCAEDTH, 0x60);
- write_short_reg(devrec, REG_BBREG6, 0x40);
- write_short_reg(devrec, REG_RFCTL, 0x04);
- write_short_reg(devrec, REG_RFCTL, 0x0);
- udelay(192);
-
- /* Set RX Mode. RXMCR<1:0>: 0x0 normal, 0x1 promisc, 0x2 error */
- ret = read_short_reg(devrec, REG_RXMCR, &val);
+ ret = mrf24j40_hw_init(devrec);
if (ret)
- goto err_read_reg;
- val &= ~0x3; /* Clear RX mode (normal) */
- write_short_reg(devrec, REG_RXMCR, val);
+ goto err_hw_init;
ret = request_threaded_irq(spi->irq,
NULL,
@@ -690,7 +753,7 @@ static int mrf24j40_probe(struct spi_device *spi)
return 0;
err_irq:
-err_read_reg:
+err_hw_init:
ieee802154_unregister_device(devrec->dev);
err_register_device:
ieee802154_free_device(devrec->dev);
--
1.7.9.5
next reply other threads:[~2014-04-23 13:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-23 13:11 Varka Bhadram [this message]
2014-04-23 13:51 ` [PATCH] mrf24j40: seperate mrf24j40 h/w init and add checkings Alan Ott
2014-04-23 14:00 ` Alexander Aring
2014-04-24 3:19 ` Varka Bhadram
2014-04-23 14:36 ` [Linux-zigbee-devel] " Werner Almesberger
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