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mrf24j40: add tx power support

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This patch supports setting of transmit power for the mrf24j40ma
transceiver only. The mrf24j40mc has some amplifier to change the
transmit power, I am currently not sure how the mapping for this
amplifier looks like.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Alexander Aring 2015-09-21 11:24:40 +02:00 committed by Marcel Holtmann
parent e33a0f96ac
commit 00250f7889
1 changed files with 71 additions and 0 deletions
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71
drivers/net/ieee802154/mrf24j40.c
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@ -864,6 +864,65 @@ static int mrf24j40_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
return -EINVAL;
}
static const s32 mrf24j40ma_powers[] = {
0, -50, -120, -190, -280, -370, -490, -630, -1000, -1050, -1120, -1190,
-1280, -1370, -1490, -1630, -2000, -2050, -2120, -2190, -2280, -2370,
-2490, -2630, -3000, -3050, -3120, -3190, -3280, -3370, -3490, -3630,
};
static int mrf24j40_set_txpower(struct ieee802154_hw *hw, s32 mbm)
{
struct mrf24j40 *devrec = hw->priv;
s32 small_scale;
u8 val;
if (0 >= mbm && mbm > -1000) {
val = 0;
small_scale = mbm;
} else if (-1000 >= mbm && mbm > -2000) {
val = 0x40;
small_scale = mbm + 1000;
} else if (-2000 >= mbm && mbm > -3000) {
val = 0x80;
small_scale = mbm + 2000;
} else if (-3000 >= mbm && mbm > -4000) {
val = 0xc0;
small_scale = mbm + 3000;
} else {
return -EINVAL;
}
switch (small_scale) {
case 0:
break;
case -50:
val |= 0x08;
break;
case -120:
val |= 0x10;
break;
case -190:
val |= 0x18;
break;
case -280:
val |= 0x20;
break;
case -370:
val |= 0x28;
break;
case -490:
val |= 0x30;
break;
case -630:
val |= 0x38;
break;
default:
return -EINVAL;
}
return regmap_update_bits(devrec->regmap_long, REG_RFCON3, 0xf8, val);
}
static const struct ieee802154_ops mrf24j40_ops = {
.owner = THIS_MODULE,
.xmit_async = mrf24j40_tx,
@ -875,6 +934,7 @@ static const struct ieee802154_ops mrf24j40_ops = {
.set_csma_params = mrf24j40_csma_params,
.set_cca_mode = mrf24j40_set_cca_mode,
.set_cca_ed_level = mrf24j40_set_cca_ed_level,
.set_txpower = mrf24j40_set_txpower,
};
static void mrf24j40_intstat_complete(void *context)
@ -1088,6 +1148,17 @@ static void mrf24j40_phy_setup(struct mrf24j40 *devrec)
devrec->hw->phy->cca_ed_level = -6900;
devrec->hw->phy->supported.cca_ed_levels = mrf24j40_ed_levels;
devrec->hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(mrf24j40_ed_levels);
switch (spi_get_device_id(devrec->spi)->driver_data) {
case MRF24J40:
case MRF24J40MA:
devrec->hw->phy->supported.tx_powers = mrf24j40ma_powers;
devrec->hw->phy->supported.tx_powers_size = ARRAY_SIZE(mrf24j40ma_powers);
devrec->hw->phy->flags |= WPAN_PHY_FLAG_TXPOWER;
break;
default:
break;
}
}
static int mrf24j40_probe(struct spi_device *spi)