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ieee802154: add support for listen-before-talk in wpan_phy

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Listen-before-talk is an alternative to CSMA in uncoordinated networks
and prescribed by european regulations if one wants to have a device
with radio duty cycles above 10% (or less in some bands). Add a phy
property to enable/disable LBT in the phy, including support in the
at86rf230 driver for RF212 chips.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phoebe Buckheister
2014-02-17 11:34:10 +01:00
committed by David S. Miller
parent 643e53c20a
commit 84dda3c648
7 changed files with 78 additions and 13 deletions
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11
drivers/net/ieee802154/at86rf230.c
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@@ -152,7 +152,7 @@ static inline int is_rf212(struct at86rf230_local *local)
#define SR_RESERVED_17_5 0x17, 0x08, 3
#define SR_AACK_UPLD_RES_FT 0x17, 0x10, 4
#define SR_AACK_FLTR_RES_FT 0x17, 0x20, 5
#define SR_RESERVED_17_2 0x17, 0x40, 6
#define SR_CSMA_LBT_MODE 0x17, 0x40, 6
#define SR_RESERVED_17_1 0x17, 0x80, 7
#define RG_FTN_CTRL (0x18)
#define SR_RESERVED_18_2 0x18, 0x7f, 0
@@ -786,6 +786,14 @@ at86rf212_set_txpower(struct ieee802154_dev *dev, int db)
return 0;
}
static int
at86rf212_set_lbt(struct ieee802154_dev *dev, bool on)
{
struct at86rf230_local *lp = dev->priv;
return at86rf230_write_subreg(lp, SR_CSMA_LBT_MODE, on);
}
static struct ieee802154_ops at86rf230_ops = {
.owner = THIS_MODULE,
.xmit = at86rf230_xmit,
@@ -805,6 +813,7 @@ static struct ieee802154_ops at86rf212_ops = {
.stop = at86rf230_stop,
.set_hw_addr_filt = at86rf230_set_hw_addr_filt,
.set_txpower = at86rf212_set_txpower,
.set_lbt = at86rf212_set_lbt,
};
static void at86rf230_irqwork(struct work_struct *work)