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author | Rafał Miłecki <zajec5@gmail.com> | 2013-03-20 16:26:03 (GMT) |
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committer | Rafał Miłecki <zajec5@gmail.com> | 2013-04-23 10:27:56 (GMT) |
commit | 37859a75cc52cfe845a587ce96f6d27b7418b1fb (patch) | |
tree | 2eae2ca53e3e2b1f4cdaa01eb00ba9999b4604af /drivers/net/wireless/b43 | |
parent | e5ab1fd7a5932d2e863935abe52d5aa0c4139c87 (diff) | |
download | linux-fsl-qoriq-37859a75cc52cfe845a587ce96f6d27b7418b1fb.tar.xz |
b43: N-PHY: use more friendly variables names in RSSI code
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Diffstat (limited to 'drivers/net/wireless/b43')
-rw-r--r-- | drivers/net/wireless/b43/phy_n.c | 64 |
1 files changed, 36 insertions, 28 deletions
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index ebbb50b..1063fe4 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -1590,7 +1590,7 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) u16 r; /* routing */ u8 rx_core_state; - u8 core, i, j; + int core, i, j, vcm; class = b43_nphy_classifier(dev, 0, 0); b43_nphy_classifier(dev, 7, 4); @@ -1624,33 +1624,40 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) r = core ? B2056_RX1 : B2056_RX0; b43_nphy_scale_offset_rssi(dev, 0, 0, core + 1, N_RAIL_I, 2); b43_nphy_scale_offset_rssi(dev, 0, 0, core + 1, N_RAIL_Q, 2); - for (i = 0; i < 8; i++) { + + /* Grab RSSI results for every possible VCM */ + for (vcm = 0; vcm < 8; vcm++) { b43_radio_maskset(dev, r | B2056_RX_RSSI_MISC, 0xE3, - i << 2); - b43_nphy_poll_rssi(dev, 2, results[i], 8); + vcm << 2); + b43_nphy_poll_rssi(dev, 2, results[vcm], 8); } + + /* Find out which VCM got the best results */ for (i = 0; i < 4; i += 2) { - s32 curr; + s32 currd; s32 mind = 0x100000; s32 minpoll = 249; u8 minvcm = 0; if (2 * core != i) continue; - for (j = 0; j < 8; j++) { - curr = results[j][i] * results[j][i] + - results[j][i + 1] * results[j][i]; - if (curr < mind) { - mind = curr; - minvcm = j; + for (vcm = 0; vcm < 8; vcm++) { + currd = results[vcm][i] * results[vcm][i] + + results[vcm][i + 1] * results[vcm][i]; + if (currd < mind) { + mind = currd; + minvcm = vcm; } - if (results[j][i] < minpoll) - minpoll = results[j][i]; + if (results[vcm][i] < minpoll) + minpoll = results[vcm][i]; } vcm_final = minvcm; results_min[i] = minpoll; } + + /* Select the best VCM */ b43_radio_maskset(dev, r | B2056_RX_RSSI_MISC, 0xE3, vcm_final << 2); + for (i = 0; i < 4; i++) { if (core != i / 2) continue; @@ -1667,6 +1674,7 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) 2); } } + for (core = 0; core < 2; core++) { if (!(rx_core_state & (1 << core))) continue; @@ -1743,7 +1751,7 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RSSICal */ static void b43_nphy_rev2_rssi_cal(struct b43_wldev *dev, u8 type) { - int i, j; + int i, j, vcm; u8 state[4]; u8 code, val; u16 class, override; @@ -1803,37 +1811,37 @@ static void b43_nphy_rev2_rssi_cal(struct b43_wldev *dev, u8 type) b43_nphy_scale_offset_rssi(dev, 0, 0, 5, N_RAIL_I, type); b43_nphy_scale_offset_rssi(dev, 0, 0, 5, N_RAIL_Q, type); - for (i = 0; i < 4; i++) { + for (vcm = 0; vcm < 4; vcm++) { u8 tmp[4]; for (j = 0; j < 4; j++) - tmp[j] = i; + tmp[j] = vcm; if (type != 1) b43_nphy_set_rssi_2055_vcm(dev, type, tmp); - b43_nphy_poll_rssi(dev, type, results[i], 8); + b43_nphy_poll_rssi(dev, type, results[vcm], 8); if (type < 2) for (j = 0; j < 2; j++) - miniq[i][j] = min(results[i][2 * j], - results[i][2 * j + 1]); + miniq[vcm][j] = min(results[vcm][2 * j], + results[vcm][2 * j + 1]); } for (i = 0; i < 4; i++) { s32 mind = 0x100000; u8 minvcm = 0; s32 minpoll = 249; - s32 curr; - for (j = 0; j < 4; j++) { + s32 currd; + for (vcm = 0; vcm < 4; vcm++) { if (type == 2) - curr = abs(results[j][i]); + currd = abs(results[vcm][i]); else - curr = abs(miniq[j][i / 2] - code * 8); + currd = abs(miniq[vcm][i / 2] - code * 8); - if (curr < mind) { - mind = curr; - minvcm = j; + if (currd < mind) { + mind = currd; + minvcm = vcm; } - if (results[j][i] < minpoll) - minpoll = results[j][i]; + if (results[vcm][i] < minpoll) + minpoll = results[vcm][i]; } results_min[i] = minpoll; vcm_final[i] = minvcm; |