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ieee802154: add TX power control to wpan_phy

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Replace the current u8 transmit_power in wpan_phy with s8 transmit_power.
The u8 field contained the actual tx power and a tolerance field,
which no physical radio every used. Adjust sysfs entries to keep
compatibility with userspace, give tolerances of +-1dB statically there.

This patch only adds support for this in the at86rf230 driver and the
RF212 chip. Configuration calculation for RF212 is also somewhat basic,
but does the job - the RF212 datasheet gives a large table with
suggested values for combinations of TX power and page/channel, if this
does not work well, we might have to copy the whole table.

Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phoebe Buckheister 2014-02-17 11:34:08 +01:00 • committed by David S. Miller
parent 5b520bbb53
commit 9b2777d608
10 changed files with 102 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/net/mac802154.h
View file

@ -113,6 +113,10 @@ struct ieee802154_dev {
* Set radio for listening on specific address.
* Set the device for listening on specified address.
* Returns either zero, or negative errno.
*
* set_txpower:
* Set radio transmit power in dB. Called with pib_lock held.
* Returns either zero, or negative errno.
*/
struct ieee802154_ops {
struct module *owner;
@ -129,6 +133,7 @@ struct ieee802154_ops {
unsigned long changed);
int (*ieee_addr)(struct ieee802154_dev *dev,
u8 addr[IEEE802154_ADDR_LEN]);
int (*set_txpower)(struct ieee802154_dev *dev, int db);
};
/* Basic interface to register ieee802154 device */