summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/ath/ar9170/phy.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/ath/ar9170/phy.c')
-rw-r--r--drivers/net/wireless/ath/ar9170/phy.c99
1 files changed, 82 insertions, 17 deletions
diff --git a/drivers/net/wireless/ath/ar9170/phy.c b/drivers/net/wireless/ath/ar9170/phy.c
index dbd488da18b..45a415ea809 100644
--- a/drivers/net/wireless/ath/ar9170/phy.c
+++ b/drivers/net/wireless/ath/ar9170/phy.c
@@ -1239,9 +1239,6 @@ static u8 ar9170_get_max_edge_power(struct ar9170 *ar,
struct ar9170_calctl_edges edges[],
u32 freq)
{
-/* TODO: move somewhere else */
-#define AR5416_MAX_RATE_POWER 63
-
int i;
u8 rc = AR5416_MAX_RATE_POWER;
u8 f;
@@ -1259,10 +1256,11 @@ static u8 ar9170_get_max_edge_power(struct ar9170 *ar,
break;
}
if (i > 0 && f < edges[i].channel) {
- if (f > edges[i-1].channel &&
- edges[i-1].power_flags & AR9170_CALCTL_EDGE_FLAGS) {
+ if (f > edges[i - 1].channel &&
+ edges[i - 1].power_flags &
+ AR9170_CALCTL_EDGE_FLAGS) {
/* lower channel has the inband flag set */
- rc = edges[i-1].power_flags &
+ rc = edges[i - 1].power_flags &
~AR9170_CALCTL_EDGE_FLAGS;
}
break;
@@ -1270,18 +1268,48 @@ static u8 ar9170_get_max_edge_power(struct ar9170 *ar,
}
if (i == AR5416_NUM_BAND_EDGES) {
- if (f > edges[i-1].channel &&
- edges[i-1].power_flags & AR9170_CALCTL_EDGE_FLAGS) {
+ if (f > edges[i - 1].channel &&
+ edges[i - 1].power_flags & AR9170_CALCTL_EDGE_FLAGS) {
/* lower channel has the inband flag set */
- rc = edges[i-1].power_flags &
+ rc = edges[i - 1].power_flags &
~AR9170_CALCTL_EDGE_FLAGS;
}
}
return rc;
}
-/* calculate the conformance test limits and apply them to ar->power*
- * (derived from otus hal/hpmain.c, line 3706 ff.)
+static u8 ar9170_get_heavy_clip(struct ar9170 *ar,
+ struct ar9170_calctl_edges edges[],
+ u32 freq, enum ar9170_bw bw)
+{
+ u8 f;
+ int i;
+ u8 rc = 0;
+
+ if (freq < 3000)
+ f = freq - 2300;
+ else
+ f = (freq - 4800) / 5;
+
+ if (bw == AR9170_BW_40_BELOW || bw == AR9170_BW_40_ABOVE)
+ rc |= 0xf0;
+
+ for (i = 0; i < AR5416_NUM_BAND_EDGES; i++) {
+ if (edges[i].channel == 0xff)
+ break;
+ if (f == edges[i].channel) {
+ if (!(edges[i].power_flags & AR9170_CALCTL_EDGE_FLAGS))
+ rc |= 0x0f;
+ break;
+ }
+ }
+
+ return rc;
+}
+
+/*
+ * calculate the conformance test limits and the heavy clip parameter
+ * and apply them to ar->power* (derived from otus hal/hpmain.c, line 3706)
*/
static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
{
@@ -1295,7 +1323,8 @@ static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
int pwr_cal_len;
} *modes;
- /* order is relevant in the mode_list_*: we fall back to the
+ /*
+ * order is relevant in the mode_list_*: we fall back to the
* lower indices if any mode is missed in the EEPROM.
*/
struct ctl_modes mode_list_2ghz[] = {
@@ -1313,7 +1342,10 @@ static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
#define EDGES(c, n) (ar->eeprom.ctl_data[c].control_edges[n])
- /* TODO: investigate the differences between OTUS'
+ ar->phy_heavy_clip = 0;
+
+ /*
+ * TODO: investigate the differences between OTUS'
* hpreg.c::zfHpGetRegulatoryDomain() and
* ath/regd.c::ath_regd_get_band_ctl() -
* e.g. for FCC3_WORLD the OTUS procedure
@@ -1347,6 +1379,15 @@ static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
if (ctl_idx < AR5416_NUM_CTLS) {
int f_off = 0;
+ /* determine heav clip parameter from
+ the 11G edges array */
+ if (modes[i].ctl_mode == CTL_11G) {
+ ar->phy_heavy_clip =
+ ar9170_get_heavy_clip(ar,
+ EDGES(ctl_idx, 1),
+ freq, bw);
+ }
+
/* adjust freq for 40MHz */
if (modes[i].ctl_mode == CTL_2GHT40 ||
modes[i].ctl_mode == CTL_5GHT40) {
@@ -1360,13 +1401,15 @@ static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
ar9170_get_max_edge_power(ar, EDGES(ctl_idx, 1),
freq+f_off);
- /* TODO: check if the regulatory max. power is
+ /*
+ * TODO: check if the regulatory max. power is
* controlled by cfg80211 for DFS
* (hpmain applies it to max_power itself for DFS freq)
*/
} else {
- /* Workaround in otus driver, hpmain.c, line 3906:
+ /*
+ * Workaround in otus driver, hpmain.c, line 3906:
* if no data for 5GHT20 are found, take the
* legacy 5G value.
* We extend this here to fallback from any other *HT or
@@ -1390,6 +1433,19 @@ static void ar9170_calc_ctl(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
modes[i].max_power);
}
}
+
+ if (ar->phy_heavy_clip & 0xf0) {
+ ar->power_2G_ht40[0]--;
+ ar->power_2G_ht40[1]--;
+ ar->power_2G_ht40[2]--;
+ }
+ if (ar->phy_heavy_clip & 0xf) {
+ ar->power_2G_ht20[0]++;
+ ar->power_2G_ht20[1]++;
+ ar->power_2G_ht20[2]++;
+ }
+
+
#undef EDGES
}
@@ -1499,8 +1555,6 @@ static int ar9170_set_power_cal(struct ar9170 *ar, u32 freq, enum ar9170_bw bw)
/* calc. conformance test limits and apply to ar->power*[] */
ar9170_calc_ctl(ar, freq, bw);
- /* TODO: (heavy clip) regulatory domain power level fine-tuning. */
-
/* set ACK/CTS TX power */
ar9170_regwrite_begin(ar);
@@ -1643,6 +1697,17 @@ int ar9170_set_channel(struct ar9170 *ar, struct ieee80211_channel *channel,
if (err)
return err;
+ if (ar->phy_heavy_clip) {
+ err = ar9170_write_reg(ar, 0x1c59e0,
+ 0x200 | ar->phy_heavy_clip);
+ if (err) {
+ if (ar9170_nag_limiter(ar))
+ printk(KERN_ERR "%s: failed to set "
+ "heavy clip\n",
+ wiphy_name(ar->hw->wiphy));
+ }
+ }
+
for (i = 0; i < 2; i++) {
ar->noise[i] = ar9170_calc_noise_dbm(
(le32_to_cpu(vals[2 + i]) >> 19) & 0x1ff);