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authorRafał Miłecki <zajec5@gmail.com>2010-01-25 19:00:01 +0100
committerJohn W. Linville <linville@tuxdriver.com>2010-01-25 16:40:36 -0500
commitf2982181e0531c0b12752336a1578626f99e7828 (patch)
tree76efd275e4942a3d7d5480ffb2c41fb899ff63b9 /drivers
parent6f98e62a9f1bdbd83d8d1be8c2ca6f58099846ef (diff)
b43: N-PHY: use cordic to generate samples
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/wireless/b43/phy_n.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index 061b01b814d..df4bf435e21 100644
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -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 */