[v2,3/3] usb: musb: da8xx: Fix host mode suspend

Message ID 1481885176-16984-4-git-send-email-abailon@baylibre.com
State New
Headers show

Commit Message

Alexandre Bailon Dec. 16, 2016, 10:46 a.m.
On da8xx, VBUS is not maintained during suspend when musb is in host mode.
On resume, all the connected devices will be disconnected and then will
be enumerated again.
This happens because MUSB_DEVCTL is cleared during suspend.

Use the quirk MUSB_PRESERVE_SESSION to preseve MUSB_DEVCTL during suspend.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

---
 drivers/usb/musb/da8xx.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.7.3

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diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index 7384179..69e3b40 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -457,7 +457,8 @@  static inline u8 get_vbus_power(struct device *dev)
 }
 
 static const struct musb_platform_ops da8xx_ops = {
-	.quirks		= MUSB_DMA_CPPI | MUSB_INDEXED_EP,
+	.quirks		= MUSB_DMA_CPPI | MUSB_INDEXED_EP |
+			  MUSB_PRESERVE_SESSION,
 	.init		= da8xx_musb_init,
 	.exit		= da8xx_musb_exit,