ieee802154: atusb: implement .set_cca_mode ops callback

Catching up with the stack here and implement CCA mode setting.
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/net/ieee802154/atusb.c

@@ -478,6 +478,39 @@ static const s32 atusb_ed_levels[ATUSB_MAX_ED_LEVELS + 1] = {
 	-7100, -6900, -6700, -6500, -6300, -6100,
 };
 
+static int
+atusb_set_cca_mode(struct ieee802154_hw *hw, const struct wpan_phy_cca *cca)
+{
+	struct atusb *atusb = hw->priv;
+	u8 val;
+
+	/* mapping 802.15.4 to driver spec */
+	switch (cca->mode) {
+	case NL802154_CCA_ENERGY:
+		val = 1;
+		break;
+	case NL802154_CCA_CARRIER:
+		val = 2;
+		break;
+	case NL802154_CCA_ENERGY_CARRIER:
+		switch (cca->opt) {
+		case NL802154_CCA_OPT_ENERGY_CARRIER_AND:
+			val = 3;
+			break;
+		case NL802154_CCA_OPT_ENERGY_CARRIER_OR:
+			val = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return atusb_write_subreg(atusb, SR_CCA_MODE, val);
+}
+
 static int
 atusb_set_cca_ed_level(struct ieee802154_hw *hw, s32 mbm)
 {
@@ -545,6 +578,7 @@ static struct ieee802154_ops atusb_ops = {
 	.stop			= atusb_stop,
 	.set_hw_addr_filt	= atusb_set_hw_addr_filt,
 	.set_txpower		= atusb_set_txpower,
+	.set_cca_mode		= atusb_set_cca_mode,
 	.set_cca_ed_level	= atusb_set_cca_ed_level,
 	.set_csma_params	= atusb_set_csma_params,
 	.set_promiscuous_mode	= atusb_set_promiscuous_mode,
@@ -677,11 +711,19 @@ static int atusb_probe(struct usb_interface *interface,
 	hw->flags = IEEE802154_HW_TX_OMIT_CKSUM | IEEE802154_HW_AFILT |
 		    IEEE802154_HW_PROMISCUOUS | IEEE802154_HW_CSMA_PARAMS;
 
-	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER | WPAN_PHY_FLAG_CCA_ED_LEVEL;
+	hw->phy->flags = WPAN_PHY_FLAG_TXPOWER | WPAN_PHY_FLAG_CCA_ED_LEVEL |
+			 WPAN_PHY_FLAG_CCA_MODE;
+
+	hw->phy->supported.cca_modes = BIT(NL802154_CCA_ENERGY) |
+		BIT(NL802154_CCA_CARRIER) | BIT(NL802154_CCA_ENERGY_CARRIER);
+	hw->phy->supported.cca_opts = BIT(NL802154_CCA_OPT_ENERGY_CARRIER_AND) |
+		BIT(NL802154_CCA_OPT_ENERGY_CARRIER_OR);
 
 	hw->phy->supported.cca_ed_levels = atusb_ed_levels;
 	hw->phy->supported.cca_ed_levels_size = ARRAY_SIZE(atusb_ed_levels);
 
+	hw->phy->cca.mode = NL802154_CCA_ENERGY;
+
 	hw->phy->current_page = 0;
 	hw->phy->current_channel = 11;	/* reset default */
 	hw->phy->supported.channels[0] = 0x7FFF800;