diff options
| author | Varka Bhadram <varkabhadram@gmail.com> | 2015-05-29 05:26:56 (GMT) |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-05-31 11:40:53 (GMT) |
| commit | e10c1674e31558807fcccfbf3dbebbc1cad9099c (patch) | |
| tree | 0651109d821e609fe14f7367e89fb8d5381197fd | |
| parent | 1a1bc59c5f7657387d1a4b45d63248fed55ab88c (diff) | |
| download | linux-e10c1674e31558807fcccfbf3dbebbc1cad9099c.tar.xz | |
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>
| -rw-r--r-- | drivers/net/ieee802154/cc2520.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/net/ieee802154/cc2520.c b/drivers/net/ieee802154/cc2520.c index 0d93537..36a4f31 100644 --- a/drivers/net/ieee802154/cc2520.c +++ b/drivers/net/ieee802154/cc2520.c @@ -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) |