libertas: Added callback functions to support SDIO suspend/resume.

In suspend() host sleep is activated using already configured
host sleep parameters through wol command, and in resume() host
sleep is cancelled. Earlier priv->fw_ready flag used to reset and
set in suspend and resume handler respectively. Since after suspend
only host goes into sleep state and firmware is always ready, those
changes in flag state are removed.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 32 insertions, 5 deletions

diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index cdb9b9650d73..0fa6b0e59ea5 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -70,6 +70,8 @@ static u8 is_command_allowed_in_ps(u16 cmd)
         switch (cmd) {
         case CMD_802_11_RSSI:
                 return 1;
+        case CMD_802_11_HOST_SLEEP_CFG:
+                return 1;
         default:
                 break;
         }
@@ -185,6 +187,23 @@ out:
         return ret;
 }
 
+static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
+                        struct cmd_header *resp)
+{
+        lbs_deb_enter(LBS_DEB_CMD);
+        if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
+                priv->is_host_sleep_configured = 0;
+                if (priv->psstate == PS_STATE_FULL_POWER) {
+                        priv->is_host_sleep_activated = 0;
+                        wake_up_interruptible(&priv->host_sleep_q);
+                }
+        } else {
+                priv->is_host_sleep_configured = 1;
+        }
+        lbs_deb_leave(LBS_DEB_CMD);
+        return 0;
+}
+
 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
                 struct wol_config *p_wol_config)
 {
@@ -202,12 +221,11 @@ int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
         else
                 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
 
-        ret = lbs_cmd_with_response(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config);
+        ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
+                        le16_to_cpu(cmd_config.hdr.size),
+                        lbs_ret_host_sleep_cfg, 0);
         if (!ret) {
-                if (criteria) {
-                        lbs_deb_cmd("Set WOL criteria to %x\n", criteria);
-                        priv->wol_criteria = criteria;
-                } else
+                if (p_wol_config)
                         memcpy((uint8_t *) p_wol_config,
                                         (uint8_t *)&cmd_config.wol_conf,
                                         sizeof(struct wol_config));
@@ -712,6 +730,10 @@ static void lbs_queue_cmd(struct lbs_private *priv,
                 }
         }
 
+        if (le16_to_cpu(cmdnode->cmdbuf->command) ==
+                        CMD_802_11_WAKEUP_CONFIRM)
+                addtail = 0;
+
         spin_lock_irqsave(&priv->driver_lock, flags);
 
         if (addtail)
@@ -1353,6 +1375,11 @@ static void lbs_send_confirmsleep(struct lbs_private *priv)
         /* We don't get a response on the sleep-confirmation */
         priv->dnld_sent = DNLD_RES_RECEIVED;
 
+        if (priv->is_host_sleep_configured) {
+                priv->is_host_sleep_activated = 1;
+                wake_up_interruptible(&priv->host_sleep_q);
+        }
+
         /* If nothing to do, go back to sleep (?) */
         if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
                 priv->psstate = PS_STATE_SLEEP;