diff options
| author | Alexander Aring <alex.aring@gmail.com> | 2015-09-21 12:24:40 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-22 12:51:23 +0300 |
| commit | 00250f78896bc52fd4606c4de7e3fb174e702123 (patch) | |
| tree | f3793bb250a3e9e5cb35890034d8b69b1ffc4a2b /drivers/net/ieee802154 | |
| parent | e33a0f96ac518d4c7ffcf98d2f030e6e23fab6b3 (diff) | |
| download | linux-00250f78896bc52fd4606c4de7e3fb174e702123.tar.xz | |
mrf24j40: add tx power support
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>
Diffstat (limited to 'drivers/net/ieee802154')
| -rw-r--r-- | drivers/net/ieee802154/mrf24j40.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c index c23936e3dd4f..91687c1a56ce 100644 --- a/drivers/net/ieee802154/mrf24j40.c +++ b/drivers/net/ieee802154/mrf24j40.c @@ -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) |