diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2011-04-13 03:14:45 -0700 |
|---|---|---|
| committer | Wey-Yi Guy <wey-yi.w.guy@intel.com> | 2011-04-22 10:02:34 -0700 |
| commit | bc4f8adac6b30ee5f03dad267896add7e58db729 (patch) | |
| tree | 0d6a2c806a96b35fde1a8579af6b5291f0d2d30d /drivers/net/wireless/iwlwifi/iwl-agn-lib.c | |
| parent | 1a10f43313481b99154b3b1ce6863742475422e0 (diff) | |
iwlagn: refactor down path
The iwl_down path really consists of multiple things,
refactor out the hardware resetting (including, of
course, related software state like irqs).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-lib.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-agn-lib.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c index e741128842bb..5c7eeac74846 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c @@ -2293,3 +2293,33 @@ void iwlagn_remove_notification(struct iwl_priv *priv, list_del(&wait_entry->list); spin_unlock_bh(&priv->_agn.notif_wait_lock); } + +void iwlagn_stop_device(struct iwl_priv *priv) +{ + unsigned long flags; + + /* stop and reset the on-board processor */ + iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET); + + /* tell the device to stop sending interrupts */ + spin_lock_irqsave(&priv->lock, flags); + iwl_disable_interrupts(priv); + spin_unlock_irqrestore(&priv->lock, flags); + iwl_synchronize_irq(priv); + + /* device going down, Stop using ICT table */ + iwl_disable_ict(priv); + + iwlagn_txq_ctx_stop(priv); + iwlagn_rxq_stop(priv); + + /* Power-down device's busmaster DMA clocks */ + iwl_write_prph(priv, APMG_CLK_DIS_REG, APMG_CLK_VAL_DMA_CLK_RQT); + udelay(5); + + /* Make sure (redundant) we've released our request to stay awake */ + iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + + /* Stop the device, and put it in low power state */ + iwl_apm_stop(priv); +} |