libertas: Add auto deep sleep support for SD8385/SD8686/SD8688

Add timer based auto deep sleep feature in libertas driver which can be
configured using iwconfig command. This is tested on SD8688, SD8686 cards
with firmware versions 10.38.1.p25, 9.70.4.p0 respectively on 32-bit and 64-bit
platforms. Tests have been done for USB/CS cards to make sure that the patch
won't break USB/CS code. We didn't test the if_spi driver.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index d3b69a4b4b5e..0018df14fad9 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -129,6 +129,20 @@ struct lbs_private {
         u32 bbp_offset;
         u32 rf_offset;
 
+        /** Deep sleep flag */
+        int is_deep_sleep;
+        /** Auto deep sleep enabled flag */
+        int is_auto_deep_sleep_enabled;
+        /** Device wakeup required flag */
+        int wakeup_dev_required;
+        /** Auto deep sleep flag*/
+        int is_activity_detected;
+        /** Auto deep sleep timeout (in miliseconds) */
+        int auto_deep_sleep_timeout;
+
+        /** Deep sleep wait queue */
+        wait_queue_head_t       ds_awake_q;
+
         /* Download sent:
            bit0 1/0=data_sent/data_tx_done,
            bit1 1/0=cmd_sent/cmd_tx_done,
@@ -154,6 +168,9 @@ struct lbs_private {
         /** Hardware access */
         int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
         void (*reset_card) (struct lbs_private *priv);
+        int (*enter_deep_sleep) (struct lbs_private *priv);
+        int (*exit_deep_sleep) (struct lbs_private *priv);
+        int (*reset_deep_sleep_wakeup) (struct lbs_private *priv);
 
         /* Wake On LAN */
         uint32_t wol_criteria;
@@ -204,6 +221,7 @@ struct lbs_private {
 
         /** Timers */
         struct timer_list command_timer;
+        struct timer_list auto_deepsleep_timer;
         int nr_retries;
         int cmd_timed_out;