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iwlwifi: cleanup HT40 extension channels setup 

The patch cleans up the HT40 extension channels setup for EEPROM
band 6 and 7 to make it more readable.

Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Zhu Yi 2009-08-13 13:30:53 -07:00 коммит произвёл John W. Linville
Родитель 7869b0eaed
Коммит 3b24716fc9
1 изменённых файлов: 12 добавлений и 25 удалений
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37
drivers/net/wireless/iwlwifi/iwl-eeprom.c
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@ -484,14 +484,14 @@ static void iwl_init_band_reference(const struct iwl_priv *priv,
? # x " " : "")
/**
* iwl_set_ht40_chan_info - Copy ht40 channel info into driver's priv.
* iwl_mod_ht40_chan_info - Copy ht40 channel info into driver's priv.
*
* Does not set up a command, or touch hardware.
*/
static int iwl_set_ht40_chan_info(struct iwl_priv *priv,
static int iwl_mod_ht40_chan_info(struct iwl_priv *priv,
enum ieee80211_band band, u16 channel,
const struct iwl_eeprom_channel *eeprom_ch,
u8 ht40_extension_channel)
u8 clear_ht40_extension_channel)
{
struct iwl_channel_info *ch_info;
@ -523,7 +523,7 @@ static int iwl_set_ht40_chan_info(struct iwl_priv *priv,
ch_info->ht40_min_power = 0;
ch_info->ht40_scan_power = eeprom_ch->max_power_avg;
ch_info->ht40_flags = eeprom_ch->flags;
ch_info->ht40_extension_channel = ht40_extension_channel;
ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
return 0;
}
@ -592,8 +592,7 @@ int iwl_init_channel_map(struct iwl_priv *priv)
/* First write that ht40 is not enabled, and then enable
* one by one */
ch_info->ht40_extension_channel =
(IEEE80211_CHAN_NO_HT40PLUS |
IEEE80211_CHAN_NO_HT40MINUS);
IEEE80211_CHAN_NO_HT40;
if (!(is_channel_valid(ch_info))) {
IWL_DEBUG_INFO(priv, "Ch. %d Flags %x [%sGHz] - "
@ -652,7 +651,6 @@ int iwl_init_channel_map(struct iwl_priv *priv)
/* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
for (band = 6; band <= 7; band++) {
enum ieee80211_band ieeeband;
u8 ht40_extension_chan;
iwl_init_band_reference(priv, band, &eeprom_ch_count,
&eeprom_ch_info, &eeprom_ch_index);
@ -663,28 +661,17 @@ int iwl_init_channel_map(struct iwl_priv *priv)
/* Loop through each band adding each of the channels */
for (ch = 0; ch < eeprom_ch_count; ch++) {
if ((band == 6) &&
((eeprom_ch_index[ch] == 5) ||
(eeprom_ch_index[ch] == 6) ||
(eeprom_ch_index[ch] == 7)))
/* both are allowed: above and below */
ht40_extension_chan = 0;
else
ht40_extension_chan =
IEEE80211_CHAN_NO_HT40MINUS;
/* Set up driver's info for lower half */
iwl_set_ht40_chan_info(priv, ieeeband,
iwl_mod_ht40_chan_info(priv, ieeeband,
eeprom_ch_index[ch],
&(eeprom_ch_info[ch]),
ht40_extension_chan);
&eeprom_ch_info[ch],
IEEE80211_CHAN_NO_HT40PLUS);
/* Set up driver's info for upper half */
iwl_set_ht40_chan_info(priv, ieeeband,
(eeprom_ch_index[ch] + 4),
&(eeprom_ch_info[ch]),
IEEE80211_CHAN_NO_HT40PLUS);
iwl_mod_ht40_chan_info(priv, ieeeband,
eeprom_ch_index[ch] + 4,
&eeprom_ch_info[ch],
IEEE80211_CHAN_NO_HT40MINUS);
}
}