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path: root/drivers/net/wireless/zd1211rw/zd_chip.c
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Diffstat (limited to 'drivers/net/wireless/zd1211rw/zd_chip.c')
-rw-r--r--drivers/net/wireless/zd1211rw/zd_chip.c140
1 files changed, 0 insertions, 140 deletions
diff --git a/drivers/net/wireless/zd1211rw/zd_chip.c b/drivers/net/wireless/zd1211rw/zd_chip.c
index dfa1b9bc..7ca95c4 100644
--- a/drivers/net/wireless/zd1211rw/zd_chip.c
+++ b/drivers/net/wireless/zd1211rw/zd_chip.c
@@ -1325,151 +1325,11 @@ int zd_chip_set_basic_rates(struct zd_chip *chip, u16 cr_rates)
return r;
}
-static int ofdm_qual_db(u8 status_quality, u8 zd_rate, unsigned int size)
-{
- static const u16 constants[] = {
- 715, 655, 585, 540, 470, 410, 360, 315,
- 270, 235, 205, 175, 150, 125, 105, 85,
- 65, 50, 40, 25, 15
- };
-
- int i;
- u32 x;
-
- /* It seems that their quality parameter is somehow per signal
- * and is now transferred per bit.
- */
- switch (zd_rate) {
- case ZD_OFDM_RATE_6M:
- case ZD_OFDM_RATE_12M:
- case ZD_OFDM_RATE_24M:
- size *= 2;
- break;
- case ZD_OFDM_RATE_9M:
- case ZD_OFDM_RATE_18M:
- case ZD_OFDM_RATE_36M:
- case ZD_OFDM_RATE_54M:
- size *= 4;
- size /= 3;
- break;
- case ZD_OFDM_RATE_48M:
- size *= 3;
- size /= 2;
- break;
- default:
- return -EINVAL;
- }
-
- x = (10000 * status_quality)/size;
- for (i = 0; i < ARRAY_SIZE(constants); i++) {
- if (x > constants[i])
- break;
- }
-
- switch (zd_rate) {
- case ZD_OFDM_RATE_6M:
- case ZD_OFDM_RATE_9M:
- i += 3;
- break;
- case ZD_OFDM_RATE_12M:
- case ZD_OFDM_RATE_18M:
- i += 5;
- break;
- case ZD_OFDM_RATE_24M:
- case ZD_OFDM_RATE_36M:
- i += 9;
- break;
- case ZD_OFDM_RATE_48M:
- case ZD_OFDM_RATE_54M:
- i += 15;
- break;
- default:
- return -EINVAL;
- }
-
- return i;
-}
-
-static int ofdm_qual_percent(u8 status_quality, u8 zd_rate, unsigned int size)
-{
- int r;
-
- r = ofdm_qual_db(status_quality, zd_rate, size);
- ZD_ASSERT(r >= 0);
- if (r < 0)
- r = 0;
-
- r = (r * 100)/29;
- return r <= 100 ? r : 100;
-}
-
-static unsigned int log10times100(unsigned int x)
-{
- static const u8 log10[] = {
- 0,
- 0, 30, 47, 60, 69, 77, 84, 90, 95, 100,
- 104, 107, 111, 114, 117, 120, 123, 125, 127, 130,
- 132, 134, 136, 138, 139, 141, 143, 144, 146, 147,
- 149, 150, 151, 153, 154, 155, 156, 157, 159, 160,
- 161, 162, 163, 164, 165, 166, 167, 168, 169, 169,
- 170, 171, 172, 173, 174, 174, 175, 176, 177, 177,
- 178, 179, 179, 180, 181, 181, 182, 183, 183, 184,
- 185, 185, 186, 186, 187, 188, 188, 189, 189, 190,
- 190, 191, 191, 192, 192, 193, 193, 194, 194, 195,
- 195, 196, 196, 197, 197, 198, 198, 199, 199, 200,
- 200, 200, 201, 201, 202, 202, 202, 203, 203, 204,
- 204, 204, 205, 205, 206, 206, 206, 207, 207, 207,
- 208, 208, 208, 209, 209, 210, 210, 210, 211, 211,
- 211, 212, 212, 212, 213, 213, 213, 213, 214, 214,
- 214, 215, 215, 215, 216, 216, 216, 217, 217, 217,
- 217, 218, 218, 218, 219, 219, 219, 219, 220, 220,
- 220, 220, 221, 221, 221, 222, 222, 222, 222, 223,
- 223, 223, 223, 224, 224, 224, 224,
- };
-
- return x < ARRAY_SIZE(log10) ? log10[x] : 225;
-}
-
-enum {
- MAX_CCK_EVM_DB = 45,
-};
-
-static int cck_evm_db(u8 status_quality)
-{
- return (20 * log10times100(status_quality)) / 100;
-}
-
-static int cck_snr_db(u8 status_quality)
-{
- int r = MAX_CCK_EVM_DB - cck_evm_db(status_quality);
- ZD_ASSERT(r >= 0);
- return r;
-}
-
-static int cck_qual_percent(u8 status_quality)
-{
- int r;
-
- r = cck_snr_db(status_quality);
- r = (100*r)/17;
- return r <= 100 ? r : 100;
-}
-
static inline u8 zd_rate_from_ofdm_plcp_header(const void *rx_frame)
{
return ZD_OFDM | zd_ofdm_plcp_header_rate(rx_frame);
}
-u8 zd_rx_qual_percent(const void *rx_frame, unsigned int size,
- const struct rx_status *status)
-{
- return (status->frame_status&ZD_RX_OFDM) ?
- ofdm_qual_percent(status->signal_quality_ofdm,
- zd_rate_from_ofdm_plcp_header(rx_frame),
- size) :
- cck_qual_percent(status->signal_quality_cck);
-}
-
/**
* zd_rx_rate - report zd-rate
* @rx_frame - received frame