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p54: enhance rssi->dBm database import

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This patch fixes several shortcomings of the
previous implementation. Features of the
rewrite include:

 * handles undocumented "0x0000" word at the
   start of the frequency table.
   (Affected some early? DELL 1450 USB devices
    and my Symbol 5GHz miniPCI card.)

 * supports more than just one reference point
   per band. (Also needed for the Symbol card.)

 * ships with default values in case the eeprom
   data is damaged, absent or unsupported.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter
2011-02-12 22:32:49 +01:00
committed by John W. Linville
parent a3162eed04
commit 7a047f4f2f
7 changed files with 176 additions and 41 deletions
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6
drivers/net/wireless/p54/p54.h
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@@ -116,7 +116,8 @@ struct p54_edcf_queue_param {
__le16 txop;
} __packed;
struct p54_rssi_linear_approximation {
struct p54_rssi_db_entry {
u16 freq;
s16 mul;
s16 add;
s16 longbow_unkn;
@@ -197,13 +198,14 @@ struct p54_common {
u8 rx_diversity_mask;
u8 tx_diversity_mask;
unsigned int output_power;
struct p54_rssi_db_entry *cur_rssi;
int noise;
/* calibration, output power limit and rssi<->dBm conversation data */
struct pda_iq_autocal_entry *iq_autocal;
unsigned int iq_autocal_len;
struct p54_cal_database *curve_data;
struct p54_cal_database *output_limit;
struct p54_rssi_linear_approximation rssical_db[IEEE80211_NUM_BANDS];
struct p54_cal_database *rssi_db;
struct ieee80211_supported_band *band_table[IEEE80211_NUM_BANDS];
/* BBP/MAC state */