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authorPhoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>2014-02-17 11:34:08 +0100
committerDavid S. Miller <davem@davemloft.net>2014-02-17 16:42:38 -0500
commit9b2777d6089bcd7fb035847f907280560fe233c8 (patch)
tree868e579924e3c6cd154996acfef67fb9157e8b26 /net/ieee802154/wpan-class.c
parent5b520bbb538da7f7122b1e5dc85f2b4c592d4781 (diff)
ieee802154: add TX power control to wpan_phy
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>
Diffstat (limited to 'net/ieee802154/wpan-class.c')
-rw-r--r--net/ieee802154/wpan-class.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/net/ieee802154/wpan-class.c b/net/ieee802154/wpan-class.c
index 4dd37615a749..8d6f6704da84 100644
--- a/net/ieee802154/wpan-class.c
+++ b/net/ieee802154/wpan-class.c
@@ -44,9 +44,7 @@ static DEVICE_ATTR_RO(name);
MASTER_SHOW(current_channel, "%d");
MASTER_SHOW(current_page, "%d");
-MASTER_SHOW_COMPLEX(transmit_power, "%d +- %d dB",
- ((signed char) (phy->transmit_power << 2)) >> 2,
- (phy->transmit_power >> 6) ? (phy->transmit_power >> 6) * 3 : 1);
+MASTER_SHOW(transmit_power, "%d +- 1 dB");
MASTER_SHOW(cca_mode, "%d");
static ssize_t channels_supported_show(struct device *dev,

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