Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2faa6b83 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by John W. Linville
Browse files

b43: N-PHY: implement RX IQ estimation 



Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 2f258b74

drivers/net/wireless/b43/phy_n.c

+39 −0
Original line number Diff line number Diff line
@@ -408,6 +408,45 @@ static void b43_nphy_reset_cca(struct b43_wldev *dev) 
	/* TODO: N PHY Force RF Seq with argument 2 */

}



/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RxIqEst */

static void b43_nphy_rx_iq_est(struct b43_wldev *dev, struct nphy_iq_est *est,

				u16 samps, u8 time, bool wait)

{

	int i;

	u16 tmp;



	b43_phy_write(dev, B43_NPHY_IQEST_SAMCNT, samps);

	b43_phy_maskset(dev, B43_NPHY_IQEST_WT, ~B43_NPHY_IQEST_WT_VAL, time);

	if (wait)

		b43_phy_set(dev, B43_NPHY_IQEST_CMD, B43_NPHY_IQEST_CMD_MODE);

	else

		b43_phy_mask(dev, B43_NPHY_IQEST_CMD, ~B43_NPHY_IQEST_CMD_MODE);



	b43_phy_set(dev, B43_NPHY_IQEST_CMD, B43_NPHY_IQEST_CMD_START);



	for (i = 1000; i; i--) {

		tmp = b43_phy_read(dev, B43_NPHY_IQEST_CMD);

		if (!(tmp & B43_NPHY_IQEST_CMD_START)) {

			est->i0_pwr = (b43_phy_read(dev, B43_NPHY_IQEST_IPACC_HI0) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_IPACC_LO0);

			est->q0_pwr = (b43_phy_read(dev, B43_NPHY_IQEST_QPACC_HI0) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_QPACC_LO0);

			est->iq0_prod = (b43_phy_read(dev, B43_NPHY_IQEST_IQACC_HI0) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_IQACC_LO0);



			est->i1_pwr = (b43_phy_read(dev, B43_NPHY_IQEST_IPACC_HI1) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_IPACC_LO1);

			est->q1_pwr = (b43_phy_read(dev, B43_NPHY_IQEST_QPACC_HI1) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_QPACC_LO1);

			est->iq1_prod = (b43_phy_read(dev, B43_NPHY_IQEST_IQACC_HI1) << 16) |

					b43_phy_read(dev, B43_NPHY_IQEST_IQACC_LO1);

			return;

		}

		udelay(10);

	}

	memset(est, 0, sizeof(*est));

}



/* http://bcm-v4.sipsolutions.net/802.11/PHY/N/RxIqCoeffs */

static void b43_nphy_rx_iq_coeffs(struct b43_wldev *dev, bool write,

					struct b43_phy_n_iq_comp *pcomp)