From 7321095ca39c8bb4da5e86f7a3fb8c22b47e5063 Mon Sep 17 00:00:00 2001 From: Wen Gong Date: Wed, 27 Nov 2019 06:04:13 +0000 Subject: [PATCH] ath10k: enable wow feature for sdio chip sdio does not support wow, this patch is to enable it. When system enter sleep state, if wowlan is enabled, then sdio chip will keep power if platform support keep power, after resume, it will not need to re-load firmware again. Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029. Signed-off-by: Wen Gong Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath10k/sdio.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c index 2e155bba2aa3..b8e249909699 100644 --- a/drivers/net/wireless/ath/ath10k/sdio.c +++ b/drivers/net/wireless/ath/ath10k/sdio.c @@ -1859,7 +1859,7 @@ static void ath10k_sdio_hif_stop(struct ath10k *ar) static int ath10k_sdio_hif_suspend(struct ath10k *ar) { - return -EOPNOTSUPP; + return 0; } static int ath10k_sdio_hif_resume(struct ath10k *ar) @@ -2009,7 +2009,26 @@ static const struct ath10k_hif_ops ath10k_sdio_hif_ops = { */ static int ath10k_sdio_pm_suspend(struct device *device) { - return 0; + struct sdio_func *func = dev_to_sdio_func(device); + struct ath10k_sdio *ar_sdio = sdio_get_drvdata(func); + struct ath10k *ar = ar_sdio->ar; + mmc_pm_flag_t pm_flag, pm_caps; + int ret; + + if (!device_may_wakeup(ar->dev)) + return 0; + + pm_flag = MMC_PM_KEEP_POWER; + + ret = sdio_set_host_pm_flags(func, pm_flag); + if (ret) { + pm_caps = sdio_get_host_pm_caps(func); + ath10k_warn(ar, "failed to set sdio host pm flags (0x%x, 0x%x): %d\n", + pm_flag, pm_caps, ret); + return ret; + } + + return ret; } static int ath10k_sdio_pm_resume(struct device *device) -- 2.20.1