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Commit f2982181 authored by Rafał Miłecki's avatar Rafał Miłecki Committed by John W. Linville
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b43: N-PHY: use cordic to generate samples 



Signed-off-by: default avatarRafał Miłecki <zajec5@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 6f98e62a

drivers/net/wireless/b43/phy_n.c

+12 −9
Original line number Diff line number Diff line
@@ -821,8 +821,9 @@ static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max, 
					bool test)

{

	int i;

	u16 bw, len, num, rot, angle;

	/* TODO: *buffer; */

	u16 bw, len, rot, angle;

	b43_c32 *samples;





	bw = (dev->phy.is_40mhz) ? 40 : 20;

	len = bw << 3;
@@ -839,18 +840,20 @@ static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max, 
		len = bw << 1;

	}



	/* TODO: buffer = kzalloc(len * sizeof(u32), GFP_KERNEL); */

	num = len;

	samples = kzalloc(len * sizeof(b43_c32), GFP_KERNEL);

	rot = (((freq * 36) / bw) << 16) / 100;

	angle = 0;



	for (i = 0; i < num; i++) {

		/* TODO */

	for (i = 0; i < len; i++) {

		samples[i] = b43_cordic(angle);

		angle += rot;

		samples[i].q = CORDIC_CONVERT(samples[i].q * max);

		samples[i].i = CORDIC_CONVERT(samples[i].i * max);

	}



	/* TODO: Call N PHY Load Sample Table with buffer, num as arguments */

	/* TODO: kfree(buffer); */

	return num;

	/* TODO: Call N PHY Load Sample Table with buffer, len as arguments */

	kfree(samples);

	return len;

}



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