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authorVarka Bhadram <varkabhadram@gmail.com>2015-05-29 10:56:55 +0530
committerMarcel Holtmann <marcel@holtmann.org>2015-05-31 13:40:53 +0200
commit1a1bc59c5f7657387d1a4b45d63248fed55ab88c (patch)
treedfb5bc8302d51d7cd8aaf2f6116f50a32d799611 /drivers/net/ieee802154
parentaad1b0b5d3e0e4cdadd695b7188873ba614ca4ef (diff)
downloadlinux-1a1bc59c5f7657387d1a4b45d63248fed55ab88c.tar.bz2
cc2520: fix CC2591 handling
This patch changes tha way of handling of cc2591-cc2520 combination by moving amplified variable from platform data to private data. This will be useful in other sections like tx power support. Signed-off-by: Varka Bhadram <varkab@cdac.in> Cc: Brad Campbell <bradjc5@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/net/ieee802154')
-rw-r--r--drivers/net/ieee802154/cc2520.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c
index ea280d437ca1..0d9353756598 100644
--- a/drivers/net/ieee802154/cc2520.c
+++ b/drivers/net/ieee802154/cc2520.c
@@ -196,6 +196,7 @@ struct cc2520_private {
u8 *buf; /* SPI TX/Rx data buffer */
struct mutex buffer_mutex; /* SPI buffer mutex */
bool is_tx; /* Flag for sync b/w Tx and Rx */
+ bool amplified; /* Flag for CC2591 */
int fifo_pin; /* FIFO GPIO pin number */
struct work_struct fifop_irqwork;/* Workqueue for FIFOP */
spinlock_t lock; /* Lock for is_tx*/
@@ -738,7 +739,9 @@ static int cc2520_get_platform_data(struct spi_device *spi,
pdata->vreg = of_get_named_gpio(np, "vreg-gpio", 0);
pdata->reset = of_get_named_gpio(np, "reset-gpio", 0);
- pdata->amplified = of_property_read_bool(np, "amplified");
+ /* CC2591 front end for CC2520 */
+ if (of_property_read_bool(np, "amplified"))
+ priv->amplified = true;
return 0;
}
@@ -781,7 +784,7 @@ static int cc2520_hw_init(struct cc2520_private *priv)
* amplifier. See section 8 page 17 of TI application note AN065.
* http://www.ti.com/lit/an/swra229a/swra229a.pdf
*/
- if (pdata.amplified) {
+ if (priv->amplified) {
ret = cc2520_write_register(priv, CC2520_AGCCTRL1, 0x16);
if (ret)
goto err_ret;
@@ -896,6 +899,9 @@ static int cc2520_probe(struct spi_device *spi)
spin_lock_init(&priv->lock);
init_completion(&priv->tx_complete);
+ /* Assumption that CC2591 is not connected */
+ priv->amplified = false;
+
/* Request all the gpio's */
if (!gpio_is_valid(pdata.fifo)) {
dev_err(&spi->dev, "fifo gpio is not valid\n");