b43: N-PHY: RSSI calibration for rev < 3

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2010-01-15 14:48:21 +01:00 committed by John W. Linville
parent dfb4aa5dd0
commit 90b9738d85

View File

@ -685,7 +685,160 @@ static int b43_nphy_poll_rssi(struct b43_wldev *dev, u8 type, s32 *buf,
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RSSICal */
static void b43_nphy_rev2_rssi_cal(struct b43_wldev *dev, u8 type)
{
/* TODO */
int i, j;
u8 state[4];
u8 code, val;
u16 class, override;
u8 regs_save_radio[2];
u16 regs_save_phy[2];
s8 offset[4];
u16 clip_state[2];
u16 clip_off[2] = { 0xFFFF, 0xFFFF };
s32 results_min[4] = { };
u8 vcm_final[4] = { };
s32 results[4][4] = { };
s32 miniq[4][2] = { };
if (type == 2) {
code = 0;
val = 6;
} else if (type < 2) {
code = 25;
val = 4;
} else {
B43_WARN_ON(1);
return;
}
class = b43_nphy_classifier(dev, 0, 0);
b43_nphy_classifier(dev, 7, 4);
b43_nphy_read_clip_detection(dev, clip_state);
b43_nphy_write_clip_detection(dev, clip_off);
if (b43_current_band(dev->wl) == IEEE80211_BAND_5GHZ)
override = 0x140;
else
override = 0x110;
regs_save_phy[0] = b43_phy_read(dev, B43_NPHY_RFCTL_INTC1);
regs_save_radio[0] = b43_radio_read16(dev, B2055_C1_PD_RXTX);
b43_phy_write(dev, B43_NPHY_RFCTL_INTC1, override);
b43_radio_write16(dev, B2055_C1_PD_RXTX, val);
regs_save_phy[1] = b43_phy_read(dev, B43_NPHY_RFCTL_INTC2);
regs_save_radio[1] = b43_radio_read16(dev, B2055_C2_PD_RXTX);
b43_phy_write(dev, B43_NPHY_RFCTL_INTC2, override);
b43_radio_write16(dev, B2055_C2_PD_RXTX, val);
state[0] = b43_radio_read16(dev, B2055_C1_PD_RSSIMISC) & 0x07;
state[1] = b43_radio_read16(dev, B2055_C2_PD_RSSIMISC) & 0x07;
b43_radio_mask(dev, B2055_C1_PD_RSSIMISC, 0xF8);
b43_radio_mask(dev, B2055_C2_PD_RSSIMISC, 0xF8);
state[2] = b43_radio_read16(dev, B2055_C1_SP_RSSI) & 0x07;
state[3] = b43_radio_read16(dev, B2055_C2_SP_RSSI) & 0x07;
b43_nphy_rssi_select(dev, 5, type);
b43_nphy_scale_offset_rssi(dev, 0, 0, 5, 0, type);
b43_nphy_scale_offset_rssi(dev, 0, 0, 5, 1, type);
for (i = 0; i < 4; i++) {
u8 tmp[4];
for (j = 0; j < 4; j++)
tmp[j] = i;
if (type != 1)
b43_nphy_set_rssi_2055_vcm(dev, type, tmp);
b43_nphy_poll_rssi(dev, type, results[i], 8);
if (type < 2)
for (j = 0; j < 2; j++)
miniq[i][j] = min(results[i][2 * j],
results[i][2 * j + 1]);
}
for (i = 0; i < 4; i++) {
s32 mind = 40;
u8 minvcm = 0;
s32 minpoll = 249;
s32 curr;
for (j = 0; j < 4; j++) {
if (type == 2)
curr = abs(results[j][i]);
else
curr = abs(miniq[j][i / 2] - code * 8);
if (curr < mind) {
mind = curr;
minvcm = j;
}
if (results[j][i] < minpoll)
minpoll = results[j][i];
}
results_min[i] = minpoll;
vcm_final[i] = minvcm;
}
if (type != 1)
b43_nphy_set_rssi_2055_vcm(dev, type, vcm_final);
for (i = 0; i < 4; i++) {
offset[i] = (code * 8) - results[vcm_final[i]][i];
if (offset[i] < 0)
offset[i] = -((abs(offset[i]) + 4) / 8);
else
offset[i] = (offset[i] + 4) / 8;
if (results_min[i] == 248)
offset[i] = code - 32;
if (i % 2 == 0)
b43_nphy_scale_offset_rssi(dev, 0, offset[i], 1, 0,
type);
else
b43_nphy_scale_offset_rssi(dev, 0, offset[i], 2, 1,
type);
}
b43_radio_maskset(dev, B2055_C1_PD_RSSIMISC, 0xF8, state[0]);
b43_radio_maskset(dev, B2055_C1_PD_RSSIMISC, 0xF8, state[1]);
switch (state[2]) {
case 1:
b43_nphy_rssi_select(dev, 1, 2);
break;
case 4:
b43_nphy_rssi_select(dev, 1, 0);
break;
case 2:
b43_nphy_rssi_select(dev, 1, 1);
break;
default:
b43_nphy_rssi_select(dev, 1, 1);
break;
}
switch (state[3]) {
case 1:
b43_nphy_rssi_select(dev, 2, 2);
break;
case 4:
b43_nphy_rssi_select(dev, 2, 0);
break;
default:
b43_nphy_rssi_select(dev, 2, 1);
break;
}
b43_nphy_rssi_select(dev, 0, type);
b43_phy_write(dev, B43_NPHY_RFCTL_INTC1, regs_save_phy[0]);
b43_radio_write16(dev, B2055_C1_PD_RXTX, regs_save_radio[0]);
b43_phy_write(dev, B43_NPHY_RFCTL_INTC2, regs_save_phy[1]);
b43_radio_write16(dev, B2055_C2_PD_RXTX, regs_save_radio[1]);
b43_nphy_classifier(dev, 7, class);
b43_nphy_write_clip_detection(dev, clip_state);
}
/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RSSICalRev3 */
@ -867,7 +1020,7 @@ int b43_phy_initn(struct b43_wldev *dev)
if (nphy->antsel_type == 2)
;/*TODO NPHY Superswitch Init with argument 1*/
if (nphy->perical != 2) {
/* b43_nphy_rssi_cal(dev); */
b43_nphy_rssi_cal(dev);
if (phy->rev >= 3) {
nphy->cal_orig_pwr_idx[0] =
nphy->txpwrindex[0].index_internal;