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cc2520: add set transmit power setting support
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>
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@ -629,6 +629,97 @@ cc2520_filter(struct ieee802154_hw *hw,
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return 0;
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}
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static inline int cc2520_set_tx_power(struct cc2520_private *priv, s32 mbm)
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{
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u8 power;
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switch (mbm) {
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case 500:
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power = 0xF7;
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break;
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case 300:
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power = 0xF2;
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break;
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case 200:
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power = 0xAB;
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break;
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case 100:
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power = 0x13;
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break;
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case 0:
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power = 0x32;
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break;
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case -200:
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power = 0x81;
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break;
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case -400:
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power = 0x88;
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break;
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case -700:
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power = 0x2C;
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break;
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case -1800:
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power = 0x03;
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break;
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default:
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return -EINVAL;
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}
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return cc2520_write_register(priv, CC2520_TXPOWER, power);
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}
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static inline int cc2520_cc2591_set_tx_power(struct cc2520_private *priv,
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s32 mbm)
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{
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u8 power;
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switch (mbm) {
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case 1700:
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power = 0xF9;
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break;
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case 1600:
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power = 0xF0;
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break;
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case 1400:
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power = 0xA0;
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break;
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case 1100:
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power = 0x2C;
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break;
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case -100:
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power = 0x03;
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break;
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case -800:
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power = 0x01;
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break;
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default:
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return -EINVAL;
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}
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return cc2520_write_register(priv, CC2520_TXPOWER, power);
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}
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#define CC2520_MAX_TX_POWERS 0x8
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static const s32 cc2520_powers[CC2520_MAX_TX_POWERS + 1] = {
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500, 300, 200, 100, 0, -200, -400, -700, -1800,
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};
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#define CC2520_CC2591_MAX_TX_POWERS 0x5
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static const s32 cc2520_cc2591_powers[CC2520_CC2591_MAX_TX_POWERS + 1] = {
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1700, 1600, 1400, 1100, -100, -800,
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};
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static int
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cc2520_set_txpower(struct ieee802154_hw *hw, s32 mbm)
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{
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struct cc2520_private *priv = hw->priv;
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if (!priv->amplified)
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return cc2520_set_tx_power(priv, mbm);
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return cc2520_cc2591_set_tx_power(priv, mbm);
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}
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static const struct ieee802154_ops cc2520_ops = {
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.owner = THIS_MODULE,
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.start = cc2520_start,
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@ -637,6 +728,7 @@ static const struct ieee802154_ops cc2520_ops = {
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.ed = cc2520_ed,
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.set_channel = cc2520_set_channel,
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.set_hw_addr_filt = cc2520_filter,
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.set_txpower = cc2520_set_txpower,
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};
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static int cc2520_register(struct cc2520_private *priv)
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@ -658,6 +750,16 @@ static int cc2520_register(struct cc2520_private *priv)
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priv->hw->flags = IEEE802154_HW_OMIT_CKSUM | IEEE802154_HW_AACK |
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IEEE802154_HW_AFILT;
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priv->hw->phy->flags = WPAN_PHY_FLAG_TXPOWER;
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if (!priv->amplified) {
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priv->hw->phy->supported.tx_powers = cc2520_powers;
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priv->hw->phy->supported.tx_powers_size = ARRAY_SIZE(cc2520_powers);
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} else {
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priv->hw->phy->supported.tx_powers = cc2520_cc2591_powers;
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priv->hw->phy->supported.tx_powers_size = ARRAY_SIZE(cc2520_cc2591_powers);
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}
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dev_vdbg(&priv->spi->dev, "registered cc2520\n");
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ret = ieee802154_register_hw(priv->hw);
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if (ret)
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