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authorSantosh Sajjan <ssajjan@codeaurora.org>2012-01-30 22:02:26 +0200
committerKalle Valo <kvalo@qca.qualcomm.com>2012-01-31 21:06:46 +0200
commitcca4d5adcff515b4bf5402dc23792f5123872906 (patch)
tree7cae1462024a9614ff8d34cc6ced783cde3228b4 /drivers/net/wireless/ath/ath6kl/sdio.c
parent3c411a434414f4320ce926bee3733e34ba0ea407 (diff)
ath6kl: Workaround to support Deep Sleep with MSM.
Set the host pm flag MMC_PM_WAKE_SDIO_IRQ to allow host to disable the sdc2_clk and sdc2_h_clk,so that the MSM device enter into TCXO shutdown. Signed-off-by: Santosh Sajjan <ssajjan@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath6kl/sdio.c')
-rw-r--r--drivers/net/wireless/ath/ath6kl/sdio.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c
index 07dcf00ca1a..4febee72349 100644
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -856,6 +856,19 @@ static int ath6kl_sdio_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
if (ret)
goto cut_pwr;
+ /*
+ * Workaround to support Deep Sleep with MSM, set the host pm
+ * flag as MMC_PM_WAKE_SDIO_IRQ to allow SDCC deiver to disable
+ * the sdc2_clock and internally allows MSM to enter
+ * TCXO shutdown properly.
+ */
+ if ((flags & MMC_PM_WAKE_SDIO_IRQ)) {
+ ret = sdio_set_host_pm_flags(func,
+ MMC_PM_WAKE_SDIO_IRQ);
+ if (ret)
+ goto cut_pwr;
+ }
+
ret = ath6kl_cfg80211_suspend(ar, ATH6KL_CFG_SUSPEND_DEEPSLEEP,
NULL);
if (ret)