wl1251: Prepare for idle mode support

RFC for WL1251 idle mode support brought a few issues that are worth to
update before adding the idle mode support.

Since the idle mode can reuse the code that is now used in Power Save Mode
(PSM), the flag psm in struct wl1251 is changed to variable station_mode
to be able to distinguish between PSM and idle modes.

As the station mode is different than the power power save mode command
that is sent to chip, the enum wl1251_cmd_ps_mod values are used only when
communicating with the chip and new enum wl1251_station_mode values are used
inside the driver.

Confusing comment about psm and elp relation is removed since the PSM is
actually activated by putting the chip into Entreme Low Power (ELP) mode.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Kalle Valo <kvalo@adurom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/wl1251/cmd.h b/drivers/net/wireless/wl1251/cmd.h
index e5c74c631374cd0c051574dff620b0a200f3d83a..79ca5273c9e9092ed1892064974cdde2549f781b 100644 (file)
--- a/drivers/net/wireless/wl1251/cmd.h
+++ b/drivers/net/wireless/wl1251/cmd.h
@@ -313,8 +313,8 @@ struct wl1251_cmd_vbm_update {
 } __packed;
 
 enum wl1251_cmd_ps_mode {
-       STATION_ACTIVE_MODE,
-       STATION_POWER_SAVE_MODE
+       CHIP_ACTIVE_MODE,
+       CHIP_POWER_SAVE_MODE
 };
 
 struct wl1251_cmd_ps_params {

diff --git a/drivers/net/wireless/wl1251/event.c b/drivers/net/wireless/wl1251/event.c
index dfc4579acb06f6682395e3f2b55dcae3a8b1d081..9f15ccaf8f05aec733882e98a3ff443fdb5737d0 100644 (file)
--- a/drivers/net/wireless/wl1251/event.c
+++ b/drivers/net/wireless/wl1251/event.c
@@ -68,14 +68,16 @@ static int wl1251_event_process(struct wl1251 *wl, struct event_mailbox *mbox)
        if (vector & BSS_LOSE_EVENT_ID) {
                wl1251_debug(DEBUG_EVENT, "BSS_LOSE_EVENT");
 
-               if (wl->psm_requested && wl->psm) {
+               if (wl->psm_requested &&
+                   wl->station_mode != STATION_ACTIVE_MODE) {
                        ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
                        if (ret < 0)
                                return ret;
                }
        }
 
-       if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID && wl->psm) {
+       if (vector & SYNCHRONIZATION_TIMEOUT_EVENT_ID &&
+           wl->station_mode != STATION_ACTIVE_MODE) {
                wl1251_debug(DEBUG_EVENT, "SYNCHRONIZATION_TIMEOUT_EVENT");
 
                /* indicate to the stack, that beacons have been lost */

diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c
index 12c9e635a6d6d7bf62b543fb6e14b95ad371b1a3..04a054915dbefd7c80d194e3c3304017ec2f7a1f 100644 (file)
--- a/drivers/net/wireless/wl1251/main.c
+++ b/drivers/net/wireless/wl1251/main.c
@@ -497,7 +497,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw)
        wl->rx_last_id = 0;
        wl->next_tx_complete = 0;
        wl->elp = false;
-       wl->psm = 0;
+       wl->station_mode = STATION_ACTIVE_MODE;
        wl->tx_queue_stopped = false;
        wl->power_level = WL1251_DEFAULT_POWER_LEVEL;
        wl->rssi_thold = 0;
@@ -632,7 +632,7 @@ static int wl1251_op_config(struct ieee80211_hw *hw, u32 changed)
 
                wl->psm_requested = false;
 
-               if (wl->psm) {
+               if (wl->station_mode != STATION_ACTIVE_MODE) {
                        ret = wl1251_ps_set_mode(wl, STATION_ACTIVE_MODE);
                        if (ret < 0)
                                goto out_sleep;
@@ -1384,7 +1384,7 @@ struct ieee80211_hw *wl1251_alloc_hw(void)
        wl->rx_config = WL1251_DEFAULT_RX_CONFIG;
        wl->rx_filter = WL1251_DEFAULT_RX_FILTER;
        wl->elp = false;
-       wl->psm = 0;
+       wl->station_mode = STATION_ACTIVE_MODE;
        wl->psm_requested = false;
        wl->tx_queue_stopped = false;
        wl->power_level = WL1251_DEFAULT_POWER_LEVEL;

diff --git a/drivers/net/wireless/wl1251/ps.c b/drivers/net/wireless/wl1251/ps.c
index 9cc514703d2a3513ea4a8faedfd9a36c30854eab..97a5b8c82f01fbde62f46070a134fa8998b3e061 100644 (file)
--- a/drivers/net/wireless/wl1251/ps.c
+++ b/drivers/net/wireless/wl1251/ps.c
@@ -39,7 +39,7 @@ void wl1251_elp_work(struct work_struct *work)
 
        mutex_lock(&wl->mutex);
 
-       if (wl->elp || !wl->psm)
+       if (wl->elp || wl->station_mode == STATION_ACTIVE_MODE)
                goto out;
 
        wl1251_debug(DEBUG_PSM, "chip to elp");
@@ -57,7 +57,7 @@ void wl1251_ps_elp_sleep(struct wl1251 *wl)
 {
        unsigned long delay;
 
-       if (wl->psm) {
+       if (wl->station_mode != STATION_ACTIVE_MODE) {
                delay = msecs_to_jiffies(ELP_ENTRY_DELAY);
                ieee80211_queue_delayed_work(wl->hw, &wl->elp_work, delay);
        }
@@ -104,7 +104,7 @@ int wl1251_ps_elp_wakeup(struct wl1251 *wl)
        return 0;
 }
 
-int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_cmd_ps_mode mode)
+int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_station_mode mode)
 {
        int ret;
 
@@ -128,15 +128,13 @@ int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_cmd_ps_mode mode)
                if (ret < 0)
                        return ret;
 
-               ret = wl1251_cmd_ps_mode(wl, STATION_POWER_SAVE_MODE);
+               ret = wl1251_cmd_ps_mode(wl, CHIP_POWER_SAVE_MODE);
                if (ret < 0)
                        return ret;
 
                ret = wl1251_acx_sleep_auth(wl, WL1251_PSM_ELP);
                if (ret < 0)
                        return ret;
-
-               wl->psm = 1;
                break;
        case STATION_ACTIVE_MODE:
        default:
@@ -163,13 +161,13 @@ int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_cmd_ps_mode mode)
                if (ret < 0)
                        return ret;
 
-               ret = wl1251_cmd_ps_mode(wl, STATION_ACTIVE_MODE);
+               ret = wl1251_cmd_ps_mode(wl, CHIP_ACTIVE_MODE);
                if (ret < 0)
                        return ret;
 
-               wl->psm = 0;
                break;
        }
+       wl->station_mode = mode;
 
        return ret;
 }

diff --git a/drivers/net/wireless/wl1251/ps.h b/drivers/net/wireless/wl1251/ps.h
index 55c3dda75e699f45f13beb0f43ed00ad0cee2c14..75efad246d67c12f6cb25f60b580468a87510e04 100644 (file)
--- a/drivers/net/wireless/wl1251/ps.h
+++ b/drivers/net/wireless/wl1251/ps.h
@@ -26,7 +26,7 @@
 #include "wl1251.h"
 #include "acx.h"
 
-int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_cmd_ps_mode mode);
+int wl1251_ps_set_mode(struct wl1251 *wl, enum wl1251_station_mode mode);
 void wl1251_ps_elp_sleep(struct wl1251 *wl);
 int wl1251_ps_elp_wakeup(struct wl1251 *wl);
 void wl1251_elp_work(struct work_struct *work);

diff --git a/drivers/net/wireless/wl1251/wl1251.h b/drivers/net/wireless/wl1251/wl1251.h
index bb23cd522b22daa9da053969afa98adfcf0bd960..bf245a87e80e85c4aff702b4722e79e3413f2c13 100644 (file)
--- a/drivers/net/wireless/wl1251/wl1251.h
+++ b/drivers/net/wireless/wl1251/wl1251.h
@@ -129,6 +129,11 @@ enum wl1251_partition_type {
        PART_TABLE_LEN
 };
 
+enum wl1251_station_mode {
+       STATION_ACTIVE_MODE,
+       STATION_POWER_SAVE_MODE,
+};
+
 struct wl1251_partition {
        u32 size;
        u32 start;
@@ -358,8 +363,7 @@ struct wl1251 {
 
        struct delayed_work elp_work;
 
-       /* we can be in psm, but not in elp, we have to differentiate */
-       bool psm;
+       enum wl1251_station_mode station_mode;
 
        /* PSM mode requested */
        bool psm_requested;