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>
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index cdb9b96..0fa6b0e 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -70,6 +70,8 @@
switch (cmd) {
case CMD_802_11_RSSI:
return 1;
+ case CMD_802_11_HOST_SLEEP_CFG:
+ return 1;
default:
break;
}
@@ -185,6 +187,23 @@
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 @@
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 @@
}
}
+ 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 @@
/* 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;
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index 88f7131..d6c3063 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -17,6 +17,7 @@
#include "dev.h"
#include "assoc.h"
#include "wext.h"
+#include "cmd.h"
/**
* @brief This function handles disconnect event. it
@@ -341,32 +342,10 @@
return ret;
}
-static int lbs_send_confirmwake(struct lbs_private *priv)
-{
- struct cmd_header cmd;
- int ret = 0;
-
- lbs_deb_enter(LBS_DEB_HOST);
-
- cmd.command = cpu_to_le16(CMD_802_11_WAKEUP_CONFIRM);
- cmd.size = cpu_to_le16(sizeof(cmd));
- cmd.seqnum = cpu_to_le16(++priv->seqnum);
- cmd.result = 0;
-
- lbs_deb_hex(LBS_DEB_HOST, "wake confirm", (u8 *) &cmd,
- sizeof(cmd));
-
- ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &cmd, sizeof(cmd));
- if (ret)
- lbs_pr_alert("SEND_WAKEC_CMD: Host to Card failed for Confirm Wake\n");
-
- lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
- return ret;
-}
-
int lbs_process_event(struct lbs_private *priv, u32 event)
{
int ret = 0;
+ struct cmd_header cmd;
lbs_deb_enter(LBS_DEB_CMD);
@@ -410,7 +389,10 @@
if (priv->reset_deep_sleep_wakeup)
priv->reset_deep_sleep_wakeup(priv);
priv->is_deep_sleep = 0;
- lbs_send_confirmwake(priv);
+ lbs_cmd_async(priv, CMD_802_11_WAKEUP_CONFIRM, &cmd,
+ sizeof(cmd));
+ priv->is_host_sleep_activated = 0;
+ wake_up_interruptible(&priv->host_sleep_q);
break;
case MACREG_INT_CODE_DEEP_SLEEP_AWAKE:
diff --git a/drivers/net/wireless/libertas/decl.h b/drivers/net/wireless/libertas/decl.h
index 709ffca..61db8bc 100644
--- a/drivers/net/wireless/libertas/decl.h
+++ b/drivers/net/wireless/libertas/decl.h
@@ -38,7 +38,7 @@
void lbs_set_multicast_list(struct net_device *dev);
int lbs_suspend(struct lbs_private *priv);
-void lbs_resume(struct lbs_private *priv);
+int lbs_resume(struct lbs_private *priv);
void lbs_queue_event(struct lbs_private *priv, u32 event);
void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx);
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index a54880e..71c5ad4 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -75,6 +75,7 @@
/* Deep sleep */
int is_deep_sleep;
+ int deep_sleep_required;
int is_auto_deep_sleep_enabled;
int wakeup_dev_required;
int is_activity_detected;
@@ -82,6 +83,11 @@
wait_queue_head_t ds_awake_q;
struct timer_list auto_deepsleep_timer;
+ /* Host sleep*/
+ int is_host_sleep_configured;
+ int is_host_sleep_activated;
+ wait_queue_head_t host_sleep_q;
+
/* Hardware access */
void *card;
u8 fw_ready;
diff --git a/drivers/net/wireless/libertas/ethtool.c b/drivers/net/wireless/libertas/ethtool.c
index 3804a58..6a36c99 100644
--- a/drivers/net/wireless/libertas/ethtool.c
+++ b/drivers/net/wireless/libertas/ethtool.c
@@ -91,23 +91,22 @@
struct ethtool_wolinfo *wol)
{
struct lbs_private *priv = dev->ml_priv;
- uint32_t criteria = 0;
if (wol->wolopts & ~(WAKE_UCAST|WAKE_MCAST|WAKE_BCAST|WAKE_PHY))
return -EOPNOTSUPP;
+ priv->wol_criteria = 0;
if (wol->wolopts & WAKE_UCAST)
- criteria |= EHS_WAKE_ON_UNICAST_DATA;
+ priv->wol_criteria |= EHS_WAKE_ON_UNICAST_DATA;
if (wol->wolopts & WAKE_MCAST)
- criteria |= EHS_WAKE_ON_MULTICAST_DATA;
+ priv->wol_criteria |= EHS_WAKE_ON_MULTICAST_DATA;
if (wol->wolopts & WAKE_BCAST)
- criteria |= EHS_WAKE_ON_BROADCAST_DATA;
+ priv->wol_criteria |= EHS_WAKE_ON_BROADCAST_DATA;
if (wol->wolopts & WAKE_PHY)
- criteria |= EHS_WAKE_ON_MAC_EVENT;
+ priv->wol_criteria |= EHS_WAKE_ON_MAC_EVENT;
if (wol->wolopts == 0)
- criteria |= EHS_REMOVE_WAKEUP;
-
- return lbs_host_sleep_cfg(priv, criteria, (struct wol_config *)NULL);
+ priv->wol_criteria |= EHS_REMOVE_WAKEUP;
+ return 0;
}
const struct ethtool_ops lbs_ethtool_ops = {
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index 64dd345..6e71346 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -1182,11 +1182,69 @@
lbs_deb_leave(LBS_DEB_SDIO);
}
+static int if_sdio_suspend(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ int ret;
+ struct if_sdio_card *card = sdio_get_drvdata(func);
+
+ mmc_pm_flag_t flags = sdio_get_host_pm_caps(func);
+
+ lbs_pr_info("%s: suspend: PM flags = 0x%x\n",
+ sdio_func_id(func), flags);
+
+ /* If we aren't being asked to wake on anything, we should bail out
+ * and let the SD stack power down the card.
+ */
+ if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) {
+ lbs_pr_info("Suspend without wake params -- "
+ "powering down card.");
+ return -ENOSYS;
+ }
+
+ if (!(flags & MMC_PM_KEEP_POWER)) {
+ lbs_pr_err("%s: cannot remain alive while host is suspended\n",
+ sdio_func_id(func));
+ return -ENOSYS;
+ }
+
+ ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
+ if (ret)
+ return ret;
+
+ ret = lbs_suspend(card->priv);
+ if (ret)
+ return ret;
+
+ return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
+}
+
+static int if_sdio_resume(struct device *dev)
+{
+ struct sdio_func *func = dev_to_sdio_func(dev);
+ struct if_sdio_card *card = sdio_get_drvdata(func);
+ int ret;
+
+ lbs_pr_info("%s: resume: we're back\n", sdio_func_id(func));
+
+ ret = lbs_resume(card->priv);
+
+ return ret;
+}
+
+static const struct dev_pm_ops if_sdio_pm_ops = {
+ .suspend = if_sdio_suspend,
+ .resume = if_sdio_resume,
+};
+
static struct sdio_driver if_sdio_driver = {
.name = "libertas_sdio",
.id_table = if_sdio_ids,
.probe = if_sdio_probe,
.remove = if_sdio_remove,
+ .drv = {
+ .pm = &if_sdio_pm_ops,
+ },
};
/*******************************************************************/
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index f41594c..a0cb265 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -1043,6 +1043,12 @@
if (priv->psstate != PS_STATE_FULL_POWER)
return -1;
+ if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
+ lbs_pr_info("Suspend attempt without "
+ "configuring wake params!\n");
+ return -ENOSYS;
+ }
+
ret = lbs_suspend(priv);
if (ret)
goto out;
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index d9b8ee1..abfecc4 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -625,16 +625,13 @@
return 0;
}
-static int lbs_suspend_callback(struct lbs_private *priv, unsigned long dummy,
- struct cmd_header *cmd)
+static int lbs_ret_host_sleep_activate(struct lbs_private *priv,
+ unsigned long dummy,
+ struct cmd_header *cmd)
{
lbs_deb_enter(LBS_DEB_FW);
-
- netif_device_detach(priv->dev);
- if (priv->mesh_dev)
- netif_device_detach(priv->mesh_dev);
-
- priv->fw_ready = 0;
+ priv->is_host_sleep_activated = 1;
+ wake_up_interruptible(&priv->host_sleep_q);
lbs_deb_leave(LBS_DEB_FW);
return 0;
}
@@ -646,39 +643,65 @@
lbs_deb_enter(LBS_DEB_FW);
- if (priv->wol_criteria == 0xffffffff) {
- lbs_pr_info("Suspend attempt without configuring wake params!\n");
- return -EINVAL;
+ if (priv->is_deep_sleep) {
+ ret = lbs_set_deep_sleep(priv, 0);
+ if (ret) {
+ lbs_pr_err("deep sleep cancellation failed: %d\n", ret);
+ return ret;
+ }
+ priv->deep_sleep_required = 1;
}
memset(&cmd, 0, sizeof(cmd));
+ ret = lbs_host_sleep_cfg(priv, priv->wol_criteria,
+ (struct wol_config *)NULL);
+ if (ret) {
+ lbs_pr_info("Host sleep configuration failed: %d\n", ret);
+ return ret;
+ }
+ if (priv->psstate == PS_STATE_FULL_POWER) {
+ ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
+ sizeof(cmd), lbs_ret_host_sleep_activate, 0);
+ if (ret)
+ lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
+ }
- ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_ACTIVATE, &cmd,
- sizeof(cmd), lbs_suspend_callback, 0);
- if (ret)
- lbs_pr_info("HOST_SLEEP_ACTIVATE failed: %d\n", ret);
+ if (!wait_event_interruptible_timeout(priv->host_sleep_q,
+ priv->is_host_sleep_activated, (10 * HZ))) {
+ lbs_pr_err("host_sleep_q: timer expired\n");
+ ret = -1;
+ }
+ netif_device_detach(priv->dev);
+ if (priv->mesh_dev)
+ netif_device_detach(priv->mesh_dev);
lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
return ret;
}
EXPORT_SYMBOL_GPL(lbs_suspend);
-void lbs_resume(struct lbs_private *priv)
+int lbs_resume(struct lbs_private *priv)
{
+ int ret;
+ uint32_t criteria = EHS_REMOVE_WAKEUP;
+
lbs_deb_enter(LBS_DEB_FW);
- priv->fw_ready = 1;
-
- /* Firmware doesn't seem to give us RX packets any more
- until we send it some command. Might as well update */
- lbs_prepare_and_send_command(priv, CMD_802_11_RSSI, 0,
- 0, 0, NULL);
+ ret = lbs_host_sleep_cfg(priv, criteria, (struct wol_config *)NULL);
netif_device_attach(priv->dev);
if (priv->mesh_dev)
netif_device_attach(priv->mesh_dev);
- lbs_deb_leave(LBS_DEB_FW);
+ if (priv->deep_sleep_required) {
+ priv->deep_sleep_required = 0;
+ ret = lbs_set_deep_sleep(priv, 1);
+ if (ret)
+ lbs_pr_err("deep sleep activation failed: %d\n", ret);
+ }
+
+ lbs_deb_leave_args(LBS_DEB_FW, "ret %d", ret);
+ return ret;
}
EXPORT_SYMBOL_GPL(lbs_resume);
@@ -834,10 +857,13 @@
priv->psstate = PS_STATE_FULL_POWER;
priv->is_deep_sleep = 0;
priv->is_auto_deep_sleep_enabled = 0;
+ priv->deep_sleep_required = 0;
priv->wakeup_dev_required = 0;
init_waitqueue_head(&priv->ds_awake_q);
priv->authtype_auto = 1;
-
+ priv->is_host_sleep_configured = 0;
+ priv->is_host_sleep_activated = 0;
+ init_waitqueue_head(&priv->host_sleep_q);
mutex_init(&priv->lock);
setup_timer(&priv->command_timer, lbs_cmd_timeout_handler,
@@ -976,6 +1002,7 @@
priv->wol_criteria = 0xffffffff;
priv->wol_gpio = 0xff;
+ priv->wol_gap = 20;
goto done;
@@ -1031,6 +1058,10 @@
wake_up_interruptible(&priv->ds_awake_q);
}
+ priv->is_host_sleep_configured = 0;
+ priv->is_host_sleep_activated = 0;
+ wake_up_interruptible(&priv->host_sleep_q);
+
/* Stop the thread servicing the interrupts */
priv->surpriseremoved = 1;
kthread_stop(priv->main_thread);