This patch adds support for get transmit power levels. The driver needs
to implement a driver ops callback which can iterate over each transmit
power level index. This callback can return zero for successful
iteration, 1 for ending the iteration, 2 for continue the iteration
which an index increment and values below 0 zero if failed.
Signed-off-by: Alexander Aring <alex.aring@xxxxxxxxx>
---
include/net/cfg802154.h | 1 +
include/net/mac802154.h | 10 ++++++++++
net/ieee802154/rdev-ops.h | 11 +++++++++++
net/ieee802154/trace.h | 31 +++++++++++++++++++++++++++++++
net/mac802154/cfg.c | 11 +++++++++++
net/mac802154/driver-ops.h | 12 ++++++++++++
6 files changed, 76 insertions(+)
diff --git a/include/net/cfg802154.h b/include/net/cfg802154.h
index a4fde09..89995dd 100644
--- a/include/net/cfg802154.h
+++ b/include/net/cfg802154.h
@@ -42,6 +42,7 @@ struct cfg802154_ops {
int (*set_channel)(struct wpan_phy *wpan_phy, u8 page, u8 channel);
int (*set_cca_mode)(struct wpan_phy *wpan_phy,
const struct wpan_phy_cca *cca);
+ int (*get_tx_powers)(struct wpan_phy *wpan_phy, s8 *dbm, u32 idx);
int (*set_pan_id)(struct wpan_phy *wpan_phy,
struct wpan_dev *wpan_dev, __le16 pan_id);
int (*set_short_addr)(struct wpan_phy *wpan_phy,
diff --git a/include/net/mac802154.h b/include/net/mac802154.h
index e18e7fd..c489946 100644
--- a/include/net/mac802154.h
+++ b/include/net/mac802154.h
@@ -174,6 +174,14 @@ struct ieee802154_hw {
* Set radio transmit power in dB. Called with pib_lock held.
* Returns either zero, or negative errno.
*
+ * get_txpowers:
+ * Get radio transmit powers in dB. Called when rtnl lock is held.
+ * Parameter idx descibes the index of transmit power which is supported.
+ * Returns either zero or negative errno. One should be returned for
+ * indicate to break the iteration of tx power settings. Two should be
+ * returned for skipping dbm but increment idx value, this can be useful
+ * for register to dbm array mapping.
+ *
* set_lbt
* Enables or disables listen before talk on the device. Called with
* pib_lock held.
@@ -214,6 +222,8 @@ struct ieee802154_ops {
struct ieee802154_hw_addr_filt *filt,
unsigned long changed);
int (*set_txpower)(struct ieee802154_hw *hw, s8 dbm);
+ int (*get_tx_powers)(struct ieee802154_hw *hw, s8 *dbm,
+ u32 idx);
int (*set_lbt)(struct ieee802154_hw *hw, bool on);
int (*set_cca_mode)(struct ieee802154_hw *hw,
const struct wpan_phy_cca *cca);
diff --git a/net/ieee802154/rdev-ops.h b/net/ieee802154/rdev-ops.h
index 624413e..d944a7a 100644
--- a/net/ieee802154/rdev-ops.h
+++ b/net/ieee802154/rdev-ops.h
@@ -71,6 +71,17 @@ rdev_set_cca_mode(struct cfg802154_registered_device *rdev,
}
static inline int
+rdev_get_tx_powers(struct cfg802154_registered_device *rdev, s8 *dbm, u32 idx)
+{
+ int ret;
+
+ trace_802154_rdev_get_tx_powers(&rdev->wpan_phy, idx);
+ ret = rdev->ops->get_tx_powers(&rdev->wpan_phy, dbm, idx);
+ trace_802154_rdev_return_int_tx_powers(&rdev->wpan_phy, ret, dbm);
+ return ret;
+}
+
+static inline int
rdev_set_pan_id(struct cfg802154_registered_device *rdev,
struct wpan_dev *wpan_dev, __le16 pan_id)
{
diff --git a/net/ieee802154/trace.h b/net/ieee802154/trace.h
index 8ed9f97..94ac3b9 100644
--- a/net/ieee802154/trace.h
+++ b/net/ieee802154/trace.h
@@ -108,6 +108,37 @@ TRACE_EVENT(802154_rdev_set_cca_mode,
WPAN_CCA_PR_ARG)
);
+TRACE_EVENT(802154_rdev_get_tx_powers,
+ TP_PROTO(struct wpan_phy *wpan_phy, u32 idx),
+ TP_ARGS(wpan_phy, idx),
+ TP_STRUCT__entry(
+ WPAN_PHY_ENTRY
+ __field(u32, idx)
+ ),
+ TP_fast_assign(
+ WPAN_PHY_ASSIGN;
+ __entry->idx = idx;
+ ),
+ TP_printk(WPAN_PHY_PR_FMT ", idx: %d", WPAN_PHY_PR_ARG, __entry->idx)
+);
+
+TRACE_EVENT(802154_rdev_return_int_tx_powers,
+ TP_PROTO(struct wpan_phy *wpan_phy, int ret, s8 *dbm),
+ TP_ARGS(wpan_phy, ret, dbm),
+ TP_STRUCT__entry(
+ WPAN_PHY_ENTRY
+ __field(int, ret)
+ __field(s8, dbm)
+ ),
+ TP_fast_assign(
+ WPAN_PHY_ASSIGN;
+ __entry->ret = ret;
+ __entry->dbm = *dbm;
+ ),
+ TP_printk(WPAN_PHY_PR_FMT ", returned: %d, dbm: %d", WPAN_PHY_PR_ARG,
+ __entry->ret, __entry->dbm)
+);
+
DECLARE_EVENT_CLASS(802154_le16_template,
TP_PROTO(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
__le16 le16arg),
diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
index c252a45..2b80a77 100644
--- a/net/mac802154/cfg.c
+++ b/net/mac802154/cfg.c
@@ -103,6 +103,16 @@ ieee802154_set_cca_mode(struct wpan_phy *wpan_phy,
}
static int
+ieee802154_get_tx_powers(struct wpan_phy *wpan_phy, s8 *dbm, u32 idx)
+{
+ struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+
+ ASSERT_RTNL();
+
+ return drv_get_tx_powers(local, dbm, idx);
+}
+
+static int
ieee802154_set_pan_id(struct wpan_phy *wpan_phy, struct wpan_dev *wpan_dev,
__le16 pan_id)
{
@@ -192,6 +202,7 @@ const struct cfg802154_ops mac802154_config_ops = {
.del_virtual_intf = ieee802154_del_iface,
.set_channel = ieee802154_set_channel,
.set_cca_mode = ieee802154_set_cca_mode,
+ .get_tx_powers = ieee802154_get_tx_powers,
.set_pan_id = ieee802154_set_pan_id,
.set_short_addr = ieee802154_set_short_addr,
.set_backoff_exponent = ieee802154_set_backoff_exponent,
diff --git a/net/mac802154/driver-ops.h b/net/mac802154/driver-ops.h
index a053335..08e2b09 100644
--- a/net/mac802154/driver-ops.h
+++ b/net/mac802154/driver-ops.h
@@ -70,6 +70,18 @@ static inline int drv_set_tx_power(struct ieee802154_local *local, s8 dbm)
return local->ops->set_txpower(&local->hw, dbm);
}
+static inline int
+drv_get_tx_powers(struct ieee802154_local *local, s8 *dbm, u32 idx)
+{
+ might_sleep();
+
+ /* if not implemented indicate a empty list */
+ if (!local->ops->get_tx_powers)
+ return 1;
+
+ return local->ops->get_tx_powers(&local->hw, dbm, idx);
+}
+
static inline int drv_set_cca_mode(struct ieee802154_local *local,
const struct wpan_phy_cca *cca)
{
--
2.3.6
--
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