diff mbox series

[3/4] ath10k: sdio: reset chip on power_down()

Message ID 1550766118-31703-4-git-send-email-kvalo@codeaurora.org (mailing list archive)
State New, archived
Headers show
Series ath10k: small fixes for SDIO support | expand

Commit Message

Kalle Valo Feb. 21, 2019, 4:21 p.m. UTC 
From: Wen Gong <wgong@codeaurora.org>

The target device needs to be reset during power_down(), otherwise only the
first power_up() will work. And as ath10k calls power_up() during driver
initialisation the driver would be otherwise unusable.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00005-QCARMSWP-1.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
 drivers/net/wireless/ath/ath10k/sdio.c | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c
index d62502f386f2..fae56c67766f 100644
--- a/drivers/net/wireless/ath/ath10k/sdio.c
+++ b/drivers/net/wireless/ath/ath10k/sdio.c
@@ -1382,6 +1382,12 @@  static int ath10k_sdio_hif_power_up(struct ath10k *ar,
 
 	ath10k_dbg(ar, ATH10K_DBG_BOOT, "sdio power on\n");
 
+	ret = ath10k_sdio_config(ar);
+	if (ret) {
+		ath10k_err(ar, "failed to config sdio: %d\n", ret);
+		return ret;
+	}
+
 	sdio_claim_host(func);
 
 	ret = sdio_enable_func(func);
@@ -1419,11 +1425,19 @@  static void ath10k_sdio_hif_power_down(struct ath10k *ar)
 
 	/* Disable the card */
 	sdio_claim_host(ar_sdio->func);
+
 	ret = sdio_disable_func(ar_sdio->func);
-	sdio_release_host(ar_sdio->func);
+	if (ret) {
+		ath10k_warn(ar, "unable to disable sdio function: %d\n", ret);
+		sdio_release_host(ar_sdio->func);
+		return;
+	}
 
+	ret = mmc_hw_reset(ar_sdio->func->card->host);
 	if (ret)
-		ath10k_warn(ar, "unable to disable sdio function: %d\n", ret);
+		ath10k_warn(ar, "unable to reset sdio: %d\n", ret);
+
+	sdio_release_host(ar_sdio->func);
 
 	ar_sdio->is_disabled = true;
 }
@@ -2028,12 +2042,6 @@  static int ath10k_sdio_probe(struct sdio_func *func,
 
 	ath10k_sdio_set_mbox_info(ar);
 
-	ret = ath10k_sdio_config(ar);
-	if (ret) {
-		ath10k_err(ar, "failed to config sdio: %d\n", ret);
-		goto err_free_wq;
-	}
-
 	bus_params.dev_type = ATH10K_DEV_TYPE_HL;
 	/* TODO: don't know yet how to get chip_id with SDIO */
 	bus_params.chip_id = 0;