net: mac802154: Convert the symbol duration into nanoseconds

Tdsym is often given in the spec as pretty small numbers in microseconds
and hence was reflected in the code as symbol_duration and was stored as
a u8. Actually, for UWB PHYs, the symbol duration is given in
nanoseconds and are as precise as picoseconds. In order to handle better
these PHYs, change the type of symbol_duration to u32 and store this
value in nanoseconds.

All the users of this variable are updated in a mechanical way.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20220201180629.93410-3-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>

6 files changed, 33 insertions, 33 deletions

diff --git a/drivers/net/ieee802154/at86rf230.c b/drivers/net/ieee802154/at86rf230.c
index 4f5ef8a9a9a8..0264e43a1080 100644
--- a/drivers/net/ieee802154/at86rf230.c
+++ b/drivers/net/ieee802154/at86rf230.c
@@ -1075,24 +1075,24 @@ at86rf212_set_channel(struct at86rf230_local *lp, u8 page, u8 channel)
 	if (channel == 0) {
 		if (page == 0) {
 			/* SUB:0 and BPSK:0 -> BPSK-20 */
-			lp->hw->phy->symbol_duration = 50;
+			lp->hw->phy->symbol_duration = 50 * NSEC_PER_USEC;
 		} else {
 			/* SUB:1 and BPSK:0 -> BPSK-40 */
-			lp->hw->phy->symbol_duration = 25;
+			lp->hw->phy->symbol_duration = 25 * NSEC_PER_USEC;
 		}
 	} else {
 		if (page == 0)
 			/* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
-			lp->hw->phy->symbol_duration = 40;
+			lp->hw->phy->symbol_duration = 40 * NSEC_PER_USEC;
 		else
 			/* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
-			lp->hw->phy->symbol_duration = 16;
+			lp->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 	}
 
-	lp->hw->phy->lifs_period = IEEE802154_LIFS_PERIOD *
-				   lp->hw->phy->symbol_duration;
-	lp->hw->phy->sifs_period = IEEE802154_SIFS_PERIOD *
-				   lp->hw->phy->symbol_duration;
+	lp->hw->phy->lifs_period =
+		(IEEE802154_LIFS_PERIOD * lp->hw->phy->symbol_duration) / 1000;
+	lp->hw->phy->sifs_period =
+		(IEEE802154_SIFS_PERIOD * lp->hw->phy->symbol_duration) / 1000;
 
 	return at86rf230_write_subreg(lp, SR_CHANNEL, channel);
 }
@@ -1569,7 +1569,7 @@ at86rf230_detect_device(struct at86rf230_local *lp)
 		lp->data = &at86rf231_data;
 		lp->hw->phy->supported.channels[0] = 0x7FFF800;
 		lp->hw->phy->current_channel = 11;
-		lp->hw->phy->symbol_duration = 16;
+		lp->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 		lp->hw->phy->supported.tx_powers = at86rf231_powers;
 		lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf231_powers);
 		lp->hw->phy->supported.cca_ed_levels = at86rf231_ed_levels;
@@ -1582,7 +1582,7 @@ at86rf230_detect_device(struct at86rf230_local *lp)
 		lp->hw->phy->supported.channels[0] = 0x00007FF;
 		lp->hw->phy->supported.channels[2] = 0x00007FF;
 		lp->hw->phy->current_channel = 5;
-		lp->hw->phy->symbol_duration = 25;
+		lp->hw->phy->symbol_duration = 25 * NSEC_PER_USEC;
 		lp->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
 		lp->hw->phy->supported.tx_powers = at86rf212_powers;
 		lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
@@ -1594,7 +1594,7 @@ at86rf230_detect_device(struct at86rf230_local *lp)
 		lp->data = &at86rf233_data;
 		lp->hw->phy->supported.channels[0] = 0x7FFF800;
 		lp->hw->phy->current_channel = 13;
-		lp->hw->phy->symbol_duration = 16;
+		lp->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 		lp->hw->phy->supported.tx_powers = at86rf233_powers;
 		lp->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf233_powers);
 		lp->hw->phy->supported.cca_ed_levels = at86rf233_ed_levels;
diff --git a/drivers/net/ieee802154/atusb.c b/drivers/net/ieee802154/atusb.c
index 07bafbf94680..abe27d1c51ca 100644
--- a/drivers/net/ieee802154/atusb.c
+++ b/drivers/net/ieee802154/atusb.c
@@ -625,24 +625,24 @@ static int hulusb_set_channel(struct ieee802154_hw *hw, u8 page, u8 channel)
 	if (channel == 0) {
 		if (page == 0) {
 			/* SUB:0 and BPSK:0 -> BPSK-20 */
-			lp->hw->phy->symbol_duration = 50;
+			lp->hw->phy->symbol_duration = 50 * NSEC_PER_USEC;
 		} else {
 			/* SUB:1 and BPSK:0 -> BPSK-40 */
-			lp->hw->phy->symbol_duration = 25;
+			lp->hw->phy->symbol_duration = 25 * NSEC_PER_USEC;
 		}
 	} else {
 		if (page == 0)
 			/* SUB:0 and BPSK:1 -> OQPSK-100/200/400 */
-			lp->hw->phy->symbol_duration = 40;
+			lp->hw->phy->symbol_duration = 40 * NSEC_PER_USEC;
 		else
 			/* SUB:1 and BPSK:1 -> OQPSK-250/500/1000 */
-			lp->hw->phy->symbol_duration = 16;
+			lp->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 	}
 
-	lp->hw->phy->lifs_period = IEEE802154_LIFS_PERIOD *
-				   lp->hw->phy->symbol_duration;
-	lp->hw->phy->sifs_period = IEEE802154_SIFS_PERIOD *
-				   lp->hw->phy->symbol_duration;
+	lp->hw->phy->lifs_period =
+		(IEEE802154_LIFS_PERIOD * lp->hw->phy->symbol_duration) / 1000;
+	lp->hw->phy->sifs_period =
+		(IEEE802154_SIFS_PERIOD * lp->hw->phy->symbol_duration) / 1000;
 
 	return atusb_write_subreg(lp, SR_CHANNEL, channel);
 }
@@ -869,7 +869,7 @@ static int atusb_get_and_conf_chip(struct atusb *atusb)
 		chip = "AT86RF230";
 		atusb->hw->phy->supported.channels[0] = 0x7FFF800;
 		atusb->hw->phy->current_channel = 11;	/* reset default */
-		atusb->hw->phy->symbol_duration = 16;
+		atusb->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 		atusb->hw->phy->supported.tx_powers = atusb_powers;
 		atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers);
 		hw->phy->supported.cca_ed_levels = atusb_ed_levels;
@@ -879,7 +879,7 @@ static int atusb_get_and_conf_chip(struct atusb *atusb)
 		chip = "AT86RF231";
 		atusb->hw->phy->supported.channels[0] = 0x7FFF800;
 		atusb->hw->phy->current_channel = 11;	/* reset default */
-		atusb->hw->phy->symbol_duration = 16;
+		atusb->hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 		atusb->hw->phy->supported.tx_powers = atusb_powers;
 		atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(atusb_powers);
 		hw->phy->supported.cca_ed_levels = atusb_ed_levels;
@@ -891,7 +891,7 @@ static int atusb_get_and_conf_chip(struct atusb *atusb)
 		atusb->hw->phy->supported.channels[0] = 0x00007FF;
 		atusb->hw->phy->supported.channels[2] = 0x00007FF;
 		atusb->hw->phy->current_channel = 5;
-		atusb->hw->phy->symbol_duration = 25;
+		atusb->hw->phy->symbol_duration = 25 * NSEC_PER_USEC;
 		atusb->hw->phy->supported.lbt = NL802154_SUPPORTED_BOOL_BOTH;
 		atusb->hw->phy->supported.tx_powers = at86rf212_powers;
 		atusb->hw->phy->supported.tx_powers_size = ARRAY_SIZE(at86rf212_powers);
diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
index 2bc730fd260e..e88cdbf6673b 100644
--- a/drivers/net/ieee802154/ca8210.c
+++ b/drivers/net/ieee802154/ca8210.c
@@ -2974,7 +2974,7 @@ static void ca8210_hw_setup(struct ieee802154_hw *ca8210_hw)
 	ca8210_hw->phy->cca.mode = NL802154_CCA_ENERGY_CARRIER;
 	ca8210_hw->phy->cca.opt = NL802154_CCA_OPT_ENERGY_CARRIER_AND;
 	ca8210_hw->phy->cca_ed_level = -9800;
-	ca8210_hw->phy->symbol_duration = 16;
+	ca8210_hw->phy->symbol_duration = 16 * NSEC_PER_USEC;
 	ca8210_hw->phy->lifs_period = 40 * ca8210_hw->phy->symbol_duration;
 	ca8210_hw->phy->sifs_period = 12 * ca8210_hw->phy->symbol_duration;
 	ca8210_hw->flags =
diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c
index 383231b85464..c925e629ddf3 100644
--- a/drivers/net/ieee802154/mcr20a.c
+++ b/drivers/net/ieee802154/mcr20a.c
@@ -975,9 +975,9 @@ static void mcr20a_hw_setup(struct mcr20a_local *lp)
 
 	dev_dbg(printdev(lp), "%s\n", __func__);
 
-	phy->symbol_duration = 16;
-	phy->lifs_period = 40 * phy->symbol_duration;
-	phy->sifs_period = 12 * phy->symbol_duration;
+	phy->symbol_duration = 16 * NSEC_PER_USEC;
+	phy->lifs_period = (40 * phy->symbol_duration) / NSEC_PER_USEC;
+	phy->sifs_period = (12 * phy->symbol_duration) / NSEC_PER_USEC;
 
 	hw->flags = IEEE802154_HW_TX_OMIT_CKSUM |
 			IEEE802154_HW_AFILT |
@@ -1006,7 +1006,7 @@ static void mcr20a_hw_setup(struct mcr20a_local *lp)
 	phy->current_page = 0;
 	/* MCR20A default reset value */
 	phy->current_channel = 20;
-	phy->symbol_duration = 16;
+	phy->symbol_duration = 16 * NSEC_PER_USEC;
 	phy->supported.tx_powers = mcr20a_powers;
 	phy->supported.tx_powers_size = ARRAY_SIZE(mcr20a_powers);
 	phy->cca_ed_level = phy->supported.cca_ed_levels[75];
diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index 833672d6fbe4..92d4f178caca 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -203,8 +203,8 @@ struct wpan_phy {
 
 	/* PHY depended MAC PIB values */
 
-	/* 802.15.4 acronym: Tdsym in usec */
-	u8 symbol_duration;
+	/* 802.15.4 acronym: Tdsym in nsec */
+	u32 symbol_duration;
 	/* lifs and sifs periods timing */
 	u16 lifs_period;
 	u16 sifs_period;
diff --git a/net/mac802154/main.c b/net/mac802154/main.c
index 520cedc594e1..53153367f9d0 100644
--- a/net/mac802154/main.c
+++ b/net/mac802154/main.c
@@ -131,10 +131,10 @@ static void ieee802154_setup_wpan_phy_pib(struct wpan_phy *wpan_phy)
 	 * Should be done when all drivers sets this value.
 	 */
 
-	wpan_phy->lifs_period = IEEE802154_LIFS_PERIOD *
-				wpan_phy->symbol_duration;
-	wpan_phy->sifs_period = IEEE802154_SIFS_PERIOD *
-				wpan_phy->symbol_duration;
+	wpan_phy->lifs_period =
+		(IEEE802154_LIFS_PERIOD * wpan_phy->symbol_duration) / 1000;
+	wpan_phy->sifs_period =
+		(IEEE802154_SIFS_PERIOD * wpan_phy->symbol_duration) / 1000;
 }
 
 int ieee802154_register_hw(struct ieee802154_hw *hw)