diff options
| author |   Rafał Miłecki <zajec5@gmail.com> | 2014-07-15 16:54:47 +0200 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2014-07-18 13:45:24 -0400 |
| commit | d8aef3239e7d6a1bd550014ac766e5ec11c63ea9 (patch) | |
| tree | d379652b0da2e2936c3c91a8c5ec32e3d1bc567f /drivers/net/wireless/brcm80211 | |
| parent | ssb: extract power info from SPROM revs 4 and 5 (diff) | |
| download | linux-dev-d8aef3239e7d6a1bd550014ac766e5ec11c63ea9.tar.xz linux-dev-d8aef3239e7d6a1bd550014ac766e5ec11c63ea9.zip | |
bcma: extract antenna gains from SPROM correctly
Just like in case of SSB SPROMs they are encoded in a bit tricky way.
SPROM struct already uses s8 type and it's supposed to store decoded
values.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/brcm80211')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmsmac/main.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index af8ba64ace39..1b474828d5b8 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c @@ -4707,41 +4707,6 @@ static int brcms_b_attach(struct brcms_c_info *wlc, struct bcma_device *core, return err; } -static void brcms_c_attach_antgain_init(struct brcms_c_info *wlc) -{ - uint unit; - unit = wlc->pub->unit; - - if ((wlc->band->antgain == -1) && (wlc->pub->sromrev == 1)) { - /* default antenna gain for srom rev 1 is 2 dBm (8 qdbm) */ - wlc->band->antgain = 8; - } else if (wlc->band->antgain == -1) { - wiphy_err(wlc->wiphy, "wl%d: %s: Invalid antennas available in" - " srom, using 2dB\n", unit, __func__); - wlc->band->antgain = 8; - } else { - s8 gain, fract; - /* Older sroms specified gain in whole dbm only. In order - * be able to specify qdbm granularity and remain backward - * compatible the whole dbms are now encoded in only - * low 6 bits and remaining qdbms are encoded in the hi 2 bits. - * 6 bit signed number ranges from -32 - 31. - * - * Examples: - * 0x1 = 1 db, - * 0xc1 = 1.75 db (1 + 3 quarters), - * 0x3f = -1 (-1 + 0 quarters), - * 0x7f = -.75 (-1 + 1 quarters) = -3 qdbm. - * 0xbf = -.50 (-1 + 2 quarters) = -2 qdbm. - */ - gain = wlc->band->antgain & 0x3f; - gain <<= 2; /* Sign extend */ - gain >>= 2; - fract = (wlc->band->antgain & 0xc0) >> 6; - wlc->band->antgain = 4 * gain + fract; - } -} - static bool brcms_c_attach_stf_ant_init(struct brcms_c_info *wlc) { int aa; @@ -4780,8 +4745,6 @@ static bool brcms_c_attach_stf_ant_init(struct brcms_c_info *wlc) else wlc->band->antgain = sprom->antenna_gain.a0; - brcms_c_attach_antgain_init(wlc); - return true; } |