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Commit 01ac17ec authored by Juuso Oikarinen's avatar Juuso Oikarinen Committed by John W. Linville
Browse files

wl1271: Add pre-power-on sleep 



This patch adds a short delay before powering on the wl1271. Normally, it is
not needed, but if the wl1271 has been powered off shortly before, for reliable
firmware-booting this small stabilization delay is required.

Signed-off-by: default avatarJuuso Oikarinen <juuso.oikarinen@nokia.com>
Reviewed-by: default avatarLuciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: default avatarLuciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9ccd9217

drivers/net/wireless/wl12xx/wl1271.h

+3 −1
Original line number Original line Diff line number Diff line
@@ -458,7 +458,9 @@ int wl1271_plt_stop(struct wl1271 *wl); 




#define WL1271_TX_QUEUE_MAX_LENGTH 20

#define WL1271_TX_QUEUE_MAX_LENGTH 20





/* WL1271 needs a 200ms sleep after power on */

/* WL1271 needs a 200ms sleep after power on, and a 20ms sleep before power

   on in case is has been shut down shortly before */

#define WL1271_PRE_POWER_ON_SLEEP 20 /* in miliseconds */

#define WL1271_POWER_ON_SLEEP 200 /* in miliseconds */

#define WL1271_POWER_ON_SLEEP 200 /* in miliseconds */





static inline bool wl1271_11a_enabled(void)

static inline bool wl1271_11a_enabled(void)

drivers/net/wireless/wl12xx/wl1271_main.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -618,6 +618,7 @@ static int wl1271_chip_wakeup(struct wl1271 *wl) 
	struct wl1271_partition_set partition;

	struct wl1271_partition_set partition;

	int ret = 0;

	int ret = 0;





	msleep(WL1271_PRE_POWER_ON_SLEEP);

	wl1271_power_on(wl);

	wl1271_power_on(wl);

	msleep(WL1271_POWER_ON_SLEEP);

	msleep(WL1271_POWER_ON_SLEEP);

	wl1271_spi_reset(wl);

	wl1271_spi_reset(wl);