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| author | David S. Miller <davem@davemloft.net> | 2009-09-02 14:18:09 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-09-02 14:18:09 -0700 |
| commit | 3f968de276a8e585deb182d4ba56013a479c80bc (patch) | |
| tree | bff8932bb5e64c22708aad48a6edbef3a707a774 /drivers/net/wireless/iwlwifi/iwl-power.c | |
| parent | 5ca1b998d33c39819fca2b675d80c4469e705f2d (diff) | |
| parent | d0bec34293bb0b8dddc26d25bd46a6631d6b3ec3 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-power.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-power.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c b/drivers/net/wireless/iwlwifi/iwl-power.c index 0b16841f45f..4ec6a8307cc 100644 --- a/drivers/net/wireless/iwlwifi/iwl-power.c +++ b/drivers/net/wireless/iwlwifi/iwl-power.c @@ -216,8 +216,27 @@ static void iwl_power_fill_sleep_cmd(struct iwl_priv *priv, struct iwl_powertable_cmd *cmd, int dynps_ms, int wakeup_period) { + /* + * These are the original power level 3 sleep successions. The + * device may behave better with such succession and was also + * only tested with that. Just like the original sleep commands, + * also adjust the succession here to the wakeup_period below. + * The ranges are the same as for the sleep commands, 0-2, 3-9 + * and >10, which is selected based on the DTIM interval for + * the sleep index but here we use the wakeup period since that + * is what we need to do for the latency requirements. + */ + static const u8 slp_succ_r0[IWL_POWER_VEC_SIZE] = { 2, 2, 2, 2, 2 }; + static const u8 slp_succ_r1[IWL_POWER_VEC_SIZE] = { 2, 4, 6, 7, 9 }; + static const u8 slp_succ_r2[IWL_POWER_VEC_SIZE] = { 2, 7, 9, 9, 0xFF }; + const u8 *slp_succ = slp_succ_r0; int i; + if (wakeup_period > IWL_DTIM_RANGE_0_MAX) + slp_succ = slp_succ_r1; + if (wakeup_period > IWL_DTIM_RANGE_1_MAX) + slp_succ = slp_succ_r2; + memset(cmd, 0, sizeof(*cmd)); cmd->flags = IWL_POWER_DRIVER_ALLOW_SLEEP_MSK | @@ -230,7 +249,8 @@ static void iwl_power_fill_sleep_cmd(struct iwl_priv *priv, cmd->tx_data_timeout = cpu_to_le32(1000 * dynps_ms); for (i = 0; i < IWL_POWER_VEC_SIZE; i++) - cmd->sleep_interval[i] = cpu_to_le32(wakeup_period); + cmd->sleep_interval[i] = + cpu_to_le32(min_t(int, slp_succ[i], wakeup_period)); IWL_DEBUG_POWER(priv, "Automatic sleep command\n"); } @@ -301,7 +321,7 @@ int iwl_power_update_mode(struct iwl_priv *priv, bool force) if (priv->cfg->ops->lib->update_chain_flags && update_chains) priv->cfg->ops->lib->update_chain_flags(priv); - else + else if (priv->cfg->ops->lib->update_chain_flags) IWL_DEBUG_POWER(priv, "Cannot update the power, chain noise " "calibration running: %d\n", |