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ssb: make code for antenna gain extraction more generic 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2014-07-12 16:42:09 +02:00 committed by John W. Linville
parent b3bbf84267
commit 67d392c0e9
1 changed files with 11 additions and 9 deletions
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20
drivers/ssb/pci.c
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@ -326,13 +326,13 @@ err_ctlreg:
return err;
}
static s8 r123_extract_antgain(u8 sprom_revision, const u16 *in,
u16 mask, u16 shift)
static s8 sprom_extract_antgain(u8 sprom_revision, const u16 *in, u16 offset,
u16 mask, u16 shift)
{
u16 v;
u8 gain;
v = in[SPOFF(SSB_SPROM1_AGAIN)];
v = in[SPOFF(offset)];
gain = (v & mask) >> shift;
if (gain == 0xFF)
gain = 2; /* If unset use 2dBm */
@ -416,12 +416,14 @@ static void sprom_extract_r123(struct ssb_sprom *out, const u16 *in)
SPEX(alpha2[1], SSB_SPROM1_CCODE, 0x00ff, 0);
/* Extract the antenna gain values. */
out->antenna_gain.a0 = r123_extract_antgain(out->revision, in,
SSB_SPROM1_AGAIN_BG,
SSB_SPROM1_AGAIN_BG_SHIFT);
out->antenna_gain.a1 = r123_extract_antgain(out->revision, in,
SSB_SPROM1_AGAIN_A,
SSB_SPROM1_AGAIN_A_SHIFT);
out->antenna_gain.a0 = sprom_extract_antgain(out->revision, in,
SSB_SPROM1_AGAIN,
SSB_SPROM1_AGAIN_BG,
SSB_SPROM1_AGAIN_BG_SHIFT);
out->antenna_gain.a1 = sprom_extract_antgain(out->revision, in,
SSB_SPROM1_AGAIN,
SSB_SPROM1_AGAIN_A,
SSB_SPROM1_AGAIN_A_SHIFT);
if (out->revision >= 2)
sprom_extract_r23(out, in);
}