Author: adrian
Date: Wed Jun 5 00:39:20 2013
New Revision: 251399
URL: http://svnweb.freebsd.org/changeset/base/251399
Log:
Document the AR9285/AR9485 LNA configuration information that's
stored in the ctl/ext RSSI field for chain 2.
Tested:
* AR9285, STA
Modified:
head/sys/dev/ath/ath_hal/ah_desc.h
Modified: head/sys/dev/ath/ath_hal/ah_desc.h
==============================================================================
--- head/sys/dev/ath/ath_hal/ah_desc.h Tue Jun 4 23:52:57 2013
(r251398)
+++ head/sys/dev/ath/ath_hal/ah_desc.h Wed Jun 5 00:39:20 2013
(r251399)
@@ -157,6 +157,32 @@ struct ath_rx_status {
#define HAL_RX_IS_APSD 0x0100 /* Is ASPD trigger frame */
#define HAL_RX_STBC 0x0200 /* Is an STBC frame */
+/*
+ * This is the format of RSSI[2] on the AR9285/AR9485.
+ * It encodes the LNA configuration information.
+ *
+ * For boards with an external diversity antenna switch,
+ * HAL_RX_LNA_EXTCFG encodes which configuration was
+ * used (antenna 1 or antenna 2.) This feeds into the
+ * switch table and ensures that the given antenna was
+ * connected to an LNA.
+ */
+#define HAL_RX_LNA_LNACFG 0x80 /* 1 = main LNA config used, 0
= ALT */
+#define HAL_RX_LNA_EXTCFG 0x40 /* 0 = external diversity ant1,
1 = ant2 */
+#define HAL_RX_LNA_CFG_USED 0x30 /* 2 bits; LNA config used on
RX */
+#define HAL_RX_LNA_CFG_USED_S 4
+#define HAL_RX_LNA_CFG_MAIN 0x0c /* 2 bits; "Main" LNA config */
+#define HAL_RX_LNA_CFG_ALT 0x02 /* 2 bits; "Alt" LNA config */
+
+/*
+ * This is the format of RSSI_EXT[2] on the AR9285/AR9485.
+ * It encodes the switch table configuration and fast diversity
+ * value.
+ */
+#define HAL_RX_LNA_FASTDIV 0x40 /* 1 = fast diversity
measurement done */
+#define HAL_RX_LNA_SWITCH_0 0x30 /* 2 bits; sw_0[1:0] */
+#define HAL_RX_LNA_SWITCH_COM 0x0f /* 4 bits, sw_com[3:0] */
+
enum {
HAL_PHYERR_UNDERRUN = 0, /* Transmit underrun */
HAL_PHYERR_TIMING = 1, /* Timing error */
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