diff options
| author | Alexander Aring <alex.aring@gmail.com> | 2015-09-21 09:24:37 (GMT) |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-09-22 09:51:23 (GMT) |
| commit | 2323cf38f949439bc4ac4252cf1d91d1297cce92 (patch) | |
| tree | cf41586fbaebd329236f69e9302ab8ac6e2f7b4c /drivers | |
| parent | 374416112bb0f83c5b4d8bb3fbb157fbe0b2814b (diff) | |
| download | linux-2323cf38f949439bc4ac4252cf1d91d1297cce92.tar.xz | |
mrf24j40: add csma params support
This patch adds supports to change the CSMA parameters. The datasheet
doesn't say anything about max_be value. Seems not configurable and we
assume the 802.15.4 default. But this value must exists because there is
a min_be value.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ieee802154/mrf24j40.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c index 940fc0a..fe7991d 100644 --- a/drivers/net/ieee802154/mrf24j40.c +++ b/drivers/net/ieee802154/mrf24j40.c @@ -776,6 +776,21 @@ static int mrf24j40_handle_rx(struct mrf24j40 *devrec) return spi_async(devrec->spi, &devrec->rx_msg); } +static int +mrf24j40_csma_params(struct ieee802154_hw *hw, u8 min_be, u8 max_be, + u8 retries) +{ + struct mrf24j40 *devrec = hw->priv; + u8 val; + + /* min_be */ + val = min_be << 3; + /* csma backoffs */ + val |= retries; + + return regmap_update_bits(devrec->regmap_short, REG_TXMCR, 0x1f, val); +} + static const struct ieee802154_ops mrf24j40_ops = { .owner = THIS_MODULE, .xmit_async = mrf24j40_tx, @@ -784,6 +799,7 @@ static const struct ieee802154_ops mrf24j40_ops = { .stop = mrf24j40_stop, .set_channel = mrf24j40_set_channel, .set_hw_addr_filt = mrf24j40_filter, + .set_csma_params = mrf24j40_csma_params, }; static void mrf24j40_intstat_complete(void *context) @@ -979,6 +995,14 @@ static void mrf24j40_phy_setup(struct mrf24j40 *devrec) { ieee802154_random_extended_addr(&devrec->hw->phy->perm_extended_addr); devrec->hw->phy->current_channel = 11; + + /* mrf24j40 supports max_minbe 0 - 3 */ + devrec->hw->phy->supported.max_minbe = 3; + /* datasheet doesn't say anything about max_be, but we have min_be + * So we assume the max_be default. + */ + devrec->hw->phy->supported.min_maxbe = 5; + devrec->hw->phy->supported.max_maxbe = 5; } static int mrf24j40_probe(struct spi_device *spi) @@ -1001,7 +1025,8 @@ static int mrf24j40_probe(struct spi_device *spi) devrec->hw = hw; devrec->hw->parent = &spi->dev; devrec->hw->phy->supported.channels[0] = CHANNEL_MASK; - devrec->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT; + devrec->hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT | + IEEE802154_HW_CSMA_PARAMS; mrf24j40_setup_tx_spi_messages(devrec); mrf24j40_setup_rx_spi_messages(devrec); |