diff options
| author | Christian Lamparter <chunkeey@googlemail.com> | 2010-10-29 23:11:23 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-11-15 13:27:05 -0500 |
| commit | b1d771ee33c6e4006676002b9d74abf45b71d3d6 (patch) | |
| tree | 95f3e781ec6528ee5985932a624ad880c9a9596e /drivers/net/wireless/ath/carl9170/phy.c | |
| parent | 7919a57bc608140aa8614c19eac40c6916fb61d2 (diff) | |
| download | linux-b1d771ee33c6e4006676002b9d74abf45b71d3d6.tar.gz | |
carl9170: use generic sign_extend32
This patch replaces the handcrafted sign extension cruft with a generic bitop function. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/carl9170/phy.c')
| -rw-r--r-- | drivers/net/wireless/ath/carl9170/phy.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/drivers/net/wireless/ath/carl9170/phy.c b/drivers/net/wireless/ath/carl9170/phy.c index 89deca37a988..82bc81c4c930 100644 --- a/drivers/net/wireless/ath/carl9170/phy.c +++ b/drivers/net/wireless/ath/carl9170/phy.c @@ -1554,15 +1554,6 @@ static int carl9170_set_power_cal(struct ar9170 *ar, u32 freq, return carl9170_regwrite_result(); } -/* TODO: replace this with sign_extend32(noise, 8) */ -static int carl9170_calc_noise_dbm(u32 raw_noise) -{ - if (raw_noise & 0x100) - return ~0x1ff | raw_noise; - else - return raw_noise; -} - int carl9170_get_noisefloor(struct ar9170 *ar) { static const u32 phy_regs[] = { @@ -1578,11 +1569,11 @@ int carl9170_get_noisefloor(struct ar9170 *ar) return err; for (i = 0; i < 2; i++) { - ar->noise[i] = carl9170_calc_noise_dbm( - (phy_res[i] >> 19) & 0x1ff); + ar->noise[i] = sign_extend32(GET_VAL( + AR9170_PHY_CCA_MIN_PWR, phy_res[i]), 8); - ar->noise[i + 2] = carl9170_calc_noise_dbm( - (phy_res[i + 2] >> 23) & 0x1ff); + ar->noise[i + 2] = sign_extend32(GET_VAL( + AR9170_PHY_EXT_CCA_MIN_PWR, phy_res[i + 2]), 8); } return 0; |