iwlagn: move iwlagn_stop_device to transport layer

Since iwlagn_stop_device was the only caller to the rx_stop / tx_stop,
these two don't need to be API any more.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.guy@intel.com>

1 files changed, 42 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.c b/drivers/net/wireless/iwlwifi/iwl-trans.c
index 6b7cb73442bf..8d4555404799 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.c
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.c
@@ -611,6 +611,46 @@ static int iwl_trans_tx_stop(struct iwl_priv *priv)
 	return 0;
 }
 
+static void iwl_trans_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);
+	trans_sync_irq(priv);
+
+	/* device going down, Stop using ICT table */
+	iwl_disable_ict(priv);
+
+	/*
+	 * If a HW restart happens during firmware loading,
+	 * then the firmware loading might call this function
+	 * and later it might be called again due to the
+	 * restart. So don't process again if the device is
+	 * already dead.
+	 */
+	if (test_bit(STATUS_DEVICE_ENABLED, &priv->status)) {
+		iwl_trans_tx_stop(priv);
+		iwl_trans_rx_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);
+}
+
 static struct iwl_tx_cmd *iwl_trans_get_tx_cmd(struct iwl_priv *priv,
 						int txq_id)
 {
@@ -779,13 +819,13 @@ static void iwl_trans_free(struct iwl_priv *priv)
 
 static const struct iwl_trans_ops trans_ops = {
 	.rx_init = iwl_trans_rx_init,
-	.rx_stop = iwl_trans_rx_stop,
 	.rx_free = iwl_trans_rx_free,
 
 	.tx_init = iwl_trans_tx_init,
-	.tx_stop = iwl_trans_tx_stop,
 	.tx_free = iwl_trans_tx_free,
 
+	.stop_device = iwl_trans_stop_device,
+
 	.send_cmd = iwl_send_cmd,
 	.send_cmd_pdu = iwl_send_cmd_pdu,