iwlwifi: implement apm stop function

This patch adds apm stop function for 4965 and 5000.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -642,6 +642,22 @@ void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv)
 	iwl_hw_txq_ctx_free(priv);
 }
 
+static void iwl4965_apm_stop(struct iwl_priv *priv)
+{
+	unsigned long flags;
+
+	iwl4965_hw_nic_stop_master(priv);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+
+	udelay(10);
+
+	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
 static int iwl4965_apm_reset(struct iwl_priv *priv)
 {
 	int ret = 0;
@@ -658,6 +674,7 @@ static int iwl4965_apm_reset(struct iwl_priv *priv)
 	/* FIXME: put here L1A -L0S w/a */
 
 	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+
 	ret = iwl_poll_bit(priv, CSR_RESET,
 			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
 			  CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25);
@@ -689,7 +706,6 @@ out:
 	spin_unlock_irqrestore(&priv->lock, flags);
 
 	return ret;
-
 }
 
 #define REG_RECALIB_PERIOD (60)
@@ -3625,6 +3641,7 @@ static struct iwl_lib_ops iwl4965_lib = {
 	.apm_ops = {
 		.init = iwl4965_apm_init,
 		.reset = iwl4965_apm_reset,
+		.stop = iwl4965_apm_stop,
 		.config = iwl4965_nic_config,
 		.set_pwr_src = iwl4965_set_pwr_src,
 	},

drivers/net/wireless/iwlwifi/iwl-5000.c

@@ -100,6 +100,25 @@ static int iwl5000_apm_init(struct iwl_priv *priv)
 	return ret;
 }
 
+/* FIXME: this is indentical to 4965 */
+static void iwl5000_apm_stop(struct iwl_priv *priv)
+{
+	unsigned long flags;
+
+	iwl4965_hw_nic_stop_master(priv);
+
+	spin_lock_irqsave(&priv->lock, flags);
+
+	iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
+
+	udelay(10);
+
+	iwl_set_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+
 static int iwl5000_apm_reset(struct iwl_priv *priv)
 {
 	int ret = 0;
@@ -859,6 +878,7 @@ static struct iwl_lib_ops iwl5000_lib = {
 	.apm_ops = {
 		.init =	iwl5000_apm_init,
 		.reset = iwl5000_apm_reset,
+		.stop = iwl5000_apm_stop,
 		.config = iwl5000_nic_config,
 		.set_pwr_src = iwl4965_set_pwr_src,
 	},

drivers/net/wireless/iwlwifi/iwl-core.h

@@ -125,6 +125,7 @@ struct iwl_lib_ops {
 	struct {
 		int (*init)(struct iwl_priv *priv);
 		int (*reset)(struct iwl_priv *priv);
+		void (*stop)(struct iwl_priv *priv);
 		void (*config)(struct iwl_priv *priv);
 		int (*set_pwr_src)(struct iwl_priv *priv, enum iwl_pwr_src src);
 	} apm_ops;