Signed-off-by: Rafał Miłecki <zajec5@xxxxxxxxx>
---
drivers/net/wireless/b43/phy_common.c | 38 +++++++++++++++++++++++++++
drivers/net/wireless/b43/phy_common.h | 3 ++
drivers/net/wireless/b43/phy_lp.c | 45 +-------------------------------
3 files changed, 43 insertions(+), 43 deletions(-)
diff --git a/drivers/net/wireless/b43/phy_common.c b/drivers/net/wireless/b43/phy_common.c
index 75b26e1..348a78f 100644
--- a/drivers/net/wireless/b43/phy_common.c
+++ b/drivers/net/wireless/b43/phy_common.c
@@ -421,3 +421,41 @@ void b43_phyop_switch_analog_generic(struct b43_wldev *dev, bool on)
{
b43_write16(dev, B43_MMIO_PHY0, on ? 0 : 0xF4);
}
+
+b43_c32 b43_cordic(int theta)
+{
+ u32 arctg[] = { 2949120, 1740967, 919879, 466945, 234379, 117304,
+ 58666, 29335, 14668, 7334, 3667, 1833, 917, 458,
+ 229, 115, 57, 29, };
+ int i, tmp, signx = 1, angle = 0;
+ b43_c32 ret = { .i = 39797, .q = 0, };
+
+ theta = clamp_t(int, theta, -180, 180);
+
+ if (theta > 90) {
+ theta -= 180;
+ signx = -1;
+ } else if (theta < -90) {
+ theta += 180;
+ signx = -1;
+ }
+
+ for (i = 0; i <= 17; i++) {
+ if (theta > angle) {
+ tmp = ret.i - (ret.q >> i);
+ ret.q += ret.i >> i;
+ ret.i = tmp;
+ angle += arctg[i];
+ } else {
+ tmp = ret.i + (ret.q >> i);
+ ret.q -= ret.i >> i;
+ ret.i = tmp;
+ angle -= arctg[i];
+ }
+ }
+
+ ret.i *= signx;
+ ret.q *= signx;
+
+ return ret;
+}
diff --git a/drivers/net/wireless/b43/phy_common.h b/drivers/net/wireless/b43/phy_common.h
index f635f9e..7a38226 100644
--- a/drivers/net/wireless/b43/phy_common.h
+++ b/drivers/net/wireless/b43/phy_common.h
@@ -5,6 +5,8 @@
struct b43_wldev;
+/* Complex number using 2 32-bit signed integers */
+typedef struct { s32 i, q; } b43_c32;
/* PHY register routing bits */
#define B43_PHYROUTE 0x0C00 /* PHY register routing bits mask */
@@ -421,5 +423,6 @@ int b43_phy_shm_tssi_read(struct b43_wldev *dev, u16 shm_offset);
*/
void b43_phyop_switch_analog_generic(struct b43_wldev *dev, bool on);
+b43_c32 b43_cordic(int theta);
#endif /* LINUX_B43_PHY_COMMON_H_ */
diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c
index b58d6cf..a142804 100644
--- a/drivers/net/wireless/b43/phy_lp.c
+++ b/drivers/net/wireless/b43/phy_lp.c
@@ -1767,47 +1767,6 @@ out:
return ret;
}
-/* Complex number using 2 32-bit signed integers */
-typedef struct {s32 i, q;} lpphy_c32;
-
-static lpphy_c32 lpphy_cordic(int theta)
-{
- u32 arctg[] = { 2949120, 1740967, 919879, 466945, 234379, 117304,
- 58666, 29335, 14668, 7334, 3667, 1833, 917, 458,
- 229, 115, 57, 29, };
- int i, tmp, signx = 1, angle = 0;
- lpphy_c32 ret = { .i = 39797, .q = 0, };
-
- theta = clamp_t(int, theta, -180, 180);
-
- if (theta > 90) {
- theta -= 180;
- signx = -1;
- } else if (theta < -90) {
- theta += 180;
- signx = -1;
- }
-
- for (i = 0; i <= 17; i++) {
- if (theta > angle) {
- tmp = ret.i - (ret.q >> i);
- ret.q += ret.i >> i;
- ret.i = tmp;
- angle += arctg[i];
- } else {
- tmp = ret.i + (ret.q >> i);
- ret.q -= ret.i >> i;
- ret.i = tmp;
- angle -= arctg[i];
- }
- }
-
- ret.i *= signx;
- ret.q *= signx;
-
- return ret;
-}
-
static void lpphy_run_samples(struct b43_wldev *dev, u16 samples, u16 loops,
u16 wait)
{
@@ -1826,7 +1785,7 @@ static void lpphy_start_tx_tone(struct b43_wldev *dev, s32 freq, u16 max)
struct b43_phy_lp *lpphy = dev->phy.lp;
u16 buf[64];
int i, samples = 0, angle = 0, rotation = (9 * freq) / 500;
- lpphy_c32 sample;
+ b43_c32 sample;
lpphy->tx_tone_freq = freq;
@@ -1842,7 +1801,7 @@ static void lpphy_start_tx_tone(struct b43_wldev *dev, s32 freq, u16 max)
}
for (i = 0; i < samples; i++) {
- sample = lpphy_cordic(angle);
+ sample = b43_cordic(angle);
angle += rotation;
buf[i] = ((sample.i * max) & 0xFF) << 8;
buf[i] |= (sample.q * max) & 0xFF;
--
1.6.4.2
--
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