Keep WIFI power on during suspend. Consumes 10s of milliwatts but
avoids having to reload firmware on resume. Tested on tegra2_seaboard.
Signed-off-by: Venkat Rao <vrao@xxxxxxxxxxxx>
Tested-by: Grant Grundler <grundler@xxxxxxxxxxxx>
---
FYI: four patches from Broadcom enable brcmfmac suspend and resume
to mostly work on tegra2_seaboard (ARM) platform.
The original four patches (including this one) are:
http://codereview.chromium.org/6488018
http://codereview.chromium.org/6474032
http://codereview.chromium.org/6489022
http://codereview.chromium.org/6484021
Assuming this patch is acceptable, only 6474032 needs to be sent upstream.
diff --git a/drivers/staging/brcm80211/brcmfmac/bcmsdh_sdmmc.c b/drivers/staging/brcm80211/brcmfmac/bcmsdh_sdmmc.c
index 65313fa..0c89e85 100644
--- a/drivers/staging/brcm80211/brcmfmac/bcmsdh_sdmmc.c
+++ b/drivers/staging/brcm80211/brcmfmac/bcmsdh_sdmmc.c
@@ -68,6 +68,13 @@ DHD_PM_RESUME_WAIT_INIT(sdioh_request_buffer_wait);
int sdioh_sdmmc_card_regread(sdioh_info_t *sd, int func, u32 regaddr,
int regsize, u32 *data);
+void sdioh_sdio_set_host_pm_flags(int flag)
+{
+ if (sdio_set_host_pm_flags(gInstance->func[1], flag))
+ printk(KERN_ERR "%s: Failed to set pm_flags 0x%08x\n",\
+ __func__, (unsigned int)flag);
+}
+
static int sdioh_sdmmc_card_enablefuncs(sdioh_info_t *sd)
{
int err_ret;
diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
index 9e74beb..ba1c152 100644
--- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c
@@ -1973,6 +1973,8 @@ static s32 wl_cfg80211_resume(struct wiphy *wiphy)
static s32 wl_cfg80211_suspend(struct wiphy *wiphy)
{
+ void sdioh_sdio_set_host_pm_flags(int flag);
+
struct wl_priv *wl = wiphy_to_wl(wiphy);
struct net_device *ndev = wl_to_ndev(wl);
s32 err = 0;
@@ -1988,6 +1990,8 @@ static s32 wl_cfg80211_suspend(struct wiphy *wiphy)
clear_bit(WL_STATUS_SCANNING, &wl->status);
clear_bit(WL_STATUS_SCAN_ABORTING, &wl->status);
+ sdioh_sdio_set_host_pm_flags(MMC_PM_KEEP_POWER);
+
return err;
}
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