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cc2520: add set transmit power setting support

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This patch adds support for seeting tx power values for cc2520
and also for the combination of CC2520-CC2591.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Cc: Brad Campbell <bradjc5@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Varka Bhadram 2015-05-29 10:56:56 +05:30 committed by Marcel Holtmann
parent 1a1bc59c5f
commit e10c1674e3
1 changed files with 102 additions and 0 deletions
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102
drivers/net/ieee802154/cc2520.c
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@ -629,6 +629,97 @@ cc2520_filter(struct ieee802154_hw *hw,
return 0;
}
static inline int cc2520_set_tx_power(struct cc2520_private *priv, s32 mbm)
{
u8 power;
switch (mbm) {
case 500:
power = 0xF7;
break;
case 300:
power = 0xF2;
break;
case 200:
power = 0xAB;
break;
case 100:
power = 0x13;
break;
case 0:
power = 0x32;
break;
case -200:
power = 0x81;
break;
case -400:
power = 0x88;
break;
case -700:
power = 0x2C;
break;
case -1800:
power = 0x03;
break;
default:
return -EINVAL;
}
return cc2520_write_register(priv, CC2520_TXPOWER, power);
}
static inline int cc2520_cc2591_set_tx_power(struct cc2520_private *priv,
s32 mbm)
{
u8 power;
switch (mbm) {
case 1700:
power = 0xF9;
break;
case 1600:
power = 0xF0;
break;
case 1400:
power = 0xA0;
break;
case 1100:
power = 0x2C;
break;
case -100:
power = 0x03;
break;
case -800:
power = 0x01;
break;
default:
return -EINVAL;
}
return cc2520_write_register(priv, CC2520_TXPOWER, power);
}
#define CC2520_MAX_TX_POWERS 0x8
static const s32 cc2520_powers[CC2520_MAX_TX_POWERS + 1] = {
500, 300, 200, 100, 0, -200, -400, -700, -1800,
};
#define CC2520_CC2591_MAX_TX_POWERS 0x5
static const s32 cc2520_cc2591_powers[CC2520_CC2591_MAX_TX_POWERS + 1] = {
1700, 1600, 1400, 1100, -100, -800,
};
static int
cc2520_set_txpower(struct ieee802154_hw *hw, s32 mbm)
{
struct cc2520_private *priv = hw->priv;
if (!priv->amplified)
return cc2520_set_tx_power(priv, mbm);
return cc2520_cc2591_set_tx_power(priv, mbm);
}
static const struct ieee802154_ops cc2520_ops = {
.owner = THIS_MODULE,
.start = cc2520_start,
@ -637,6 +728,7 @@ static const struct ieee802154_ops cc2520_ops = {
.ed = cc2520_ed,
.set_channel = cc2520_set_channel,
.set_hw_addr_filt = cc2520_filter,
.set_txpower = cc2520_set_txpower,
};
static int cc2520_register(struct cc2520_private *priv)
@ -658,6 +750,16 @@ static int cc2520_register(struct cc2520_private *priv)
priv->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK |
IEEE802154_HW_AFILT;
priv->hw->phy->flags = WPAN_PHY_FLAG_TXPOWER;
if (!priv->amplified) {
priv->hw->phy->supported.tx_powers = cc2520_powers;
priv->hw->phy->supported.tx_powers_size = ARRAY_SIZE(cc2520_powers);
} else {
priv->hw->phy->supported.tx_powers = cc2520_cc2591_powers;
priv->hw->phy->supported.tx_powers_size = ARRAY_SIZE(cc2520_cc2591_powers);
}
dev_vdbg(&priv->spi->dev, "registered cc2520\n");
ret = ieee802154_register_hw(priv->hw);
if (ret)