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authorFabio Rossi <rossi.f@inwind.it>2009-04-01 14:37:50 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-05-20 14:29:53 -0400
commit875690c378d64d9ee2de15cad8206d3f11ae5096 (patch)
tree18f7516a6523dc662bb41e23e949d277543a144c
parentfbc9f97bbf5e1eaee562eba93dc60faaff3f3bfa (diff)
ath5k: fix interpolation with equal power levels
When the EEPROM contains weird values for the power levels we have to fix the interpolation process. Signed-off-by: Fabio Rossi <rossi.f@inwind.it> Acked-by: Nick Kossifidis <mickflemm@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath5k/phy.c49
1 files changed, 28 insertions, 21 deletions
diff --git a/drivers/net/wireless/ath5k/phy.c b/drivers/net/wireless/ath5k/phy.c
index 9e2faae5ae94..b48b29dca3d2 100644
--- a/drivers/net/wireless/ath5k/phy.c
+++ b/drivers/net/wireless/ath5k/phy.c
@@ -1487,28 +1487,35 @@ ath5k_get_linear_pcdac_min(const u8 *stepL, const u8 *stepR,
1487{ 1487{
1488 s8 tmp; 1488 s8 tmp;
1489 s16 min_pwrL, min_pwrR; 1489 s16 min_pwrL, min_pwrR;
1490 s16 pwr_i = pwrL[0]; 1490 s16 pwr_i;
1491 1491
1492 do { 1492 if (pwrL[0] == pwrL[1])
1493 pwr_i--; 1493 min_pwrL = pwrL[0];
1494 tmp = (s8) ath5k_get_interpolated_value(pwr_i, 1494 else {
1495 pwrL[0], pwrL[1], 1495 pwr_i = pwrL[0];
1496 stepL[0], stepL[1]); 1496 do {
1497 1497 pwr_i--;
1498 } while (tmp > 1); 1498 tmp = (s8) ath5k_get_interpolated_value(pwr_i,
1499 1499 pwrL[0], pwrL[1],
1500 min_pwrL = pwr_i; 1500 stepL[0], stepL[1]);
1501 1501 } while (tmp > 1);
1502 pwr_i = pwrR[0]; 1502
1503 do { 1503 min_pwrL = pwr_i;
1504 pwr_i--; 1504 }
1505 tmp = (s8) ath5k_get_interpolated_value(pwr_i,
1506 pwrR[0], pwrR[1],
1507 stepR[0], stepR[1]);
1508
1509 } while (tmp > 1);
1510 1505
1511 min_pwrR = pwr_i; 1506 if (pwrR[0] == pwrR[1])
1507 min_pwrR = pwrR[0];
1508 else {
1509 pwr_i = pwrR[0];
1510 do {
1511 pwr_i--;
1512 tmp = (s8) ath5k_get_interpolated_value(pwr_i,
1513 pwrR[0], pwrR[1],
1514 stepR[0], stepR[1]);
1515 } while (tmp > 1);
1516
1517 min_pwrR = pwr_i;
1518 }
1512 1519
1513 /* Keep the right boundary so that it works for both curves */ 1520 /* Keep the right boundary so that it works for both curves */
1514 return max(min_pwrL, min_pwrR); 1521 return max(min_pwrL, min_pwrR);