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iwlwifi: rework for static power save

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For static power save, the actual intervals are calculated by driver based on
the default table and DTIM flag, then sent to uCode when the scheme
is changed.

Three tables are defined based on DTIM period.
	1. DTIM 0 - 2
	2. DTIM 3 - 10
	3. DTIM > 11

The actual number of DTIM a station may miss may not exceed the
following:
	. Only 1 DTIM may be skipped at PI=4 when allowed
	. Only 2 DTIMs may be skipped at PI=5 when allowed
	. DTIM may be skipped only 5 sec after last activity
	. DTIM may be skipped only 30 sec after connection establishment

Only allow user to override the power_level when rf is ready to make sure
power level gets changed upon request.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@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:
Wey-Yi Guy 2009-10-16 14:25:58 -07:00 • committed by John W. Linville
parent 9444b18802
commit 4ad177b5c8
3 changed files with 59 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/net/wireless/iwlwifi/iwl-debugfs.c
View file

@ -809,9 +809,12 @@ static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
if (value != -1 && (value < 0 || value >= IWL_POWER_NUM))
return -EINVAL;
if (!iwl_is_ready_rf(priv))
return -EAGAIN;
priv->power_data.debug_sleep_level_override = value;
iwl_power_update_mode(priv, false);
iwl_power_update_mode(priv, true);
return count;
}