From: Kever Yang <kever.yang@rock-chips.com>
To: Paul Zimmerman <paulz@synopsys.com>, Felipe Balbi <balbi@ti.com>
Cc: Dinh Nguyen <dinguyen@opensource.altera.com>,
romain.perier@gmail.com, Heiko Stuebner <heiko@sntech.de>,
dianders@chromium.org, sonnyrao@chromium.org,
addy.ke@rock-chips.com, cf@rock-chips.com, wulf@rock-chips.com,
huangtao@rock-chips.com, linux-rockchip@lists.infradead.org,
Kever Yang <kever.yang@rock-chips.com>,
Roy Li <roy.li@rock-chips.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2] usb: dwc2: resume root hub when device detect with suspend state
Date: Tue, 18 Nov 2014 09:21:24 +0800 [thread overview]
Message-ID: <1416273684-11300-1-git-send-email-kever.yang@rock-chips.com> (raw)
After we implement the bus_suspend/resume, auto suspend id enabled.
The root hub will be auto suspend if there is no device connected,
we need to resume the root hub when a device connect detect.
This patch tested on rk3288.
Signed-off-by: Roy Li <roy.li@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
---
Changes in v2:
- add definition for hcd structure
- remove check for bus->root_hub
drivers/usb/dwc2/hcd_intr.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c
index 551ba87..680206f 100644
--- a/drivers/usb/dwc2/hcd_intr.c
+++ b/drivers/usb/dwc2/hcd_intr.c
@@ -329,6 +329,7 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
{
u32 hprt0;
u32 hprt0_modify;
+ struct usb_hcd *hcd = (struct usb_hcd *)hsotg->priv;
dev_vdbg(hsotg->dev, "--Port Interrupt--\n");
@@ -354,6 +355,10 @@ static void dwc2_port_intr(struct dwc2_hsotg *hsotg)
hsotg->flags.b.port_connect_status = 1;
hprt0_modify |= HPRT0_CONNDET;
+ /* resume root hub? */
+ if (hcd->state == HC_STATE_SUSPENDED)
+ usb_hcd_resume_root_hub(hcd);
+
/*
* The Hub driver asserts a reset when it sees port connect
* status change flag
--
1.9.1
next reply other threads:[~2014-11-18 1:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-18 1:21 Kever Yang [this message]
2014-11-18 3:01 ` [PATCH v2] usb: dwc2: resume root hub when device detect with suspend state Doug Anderson
2014-11-18 4:35 ` Felipe Balbi
2014-11-18 16:07 ` Alan Stern
2014-11-18 16:41 ` Felipe Balbi
2014-11-19 2:03 ` Julius Werner
2014-11-19 16:00 ` Alan Stern
[not found] ` <2014111916244796336915@rock-chips.com>
2014-11-19 19:27 ` Julius Werner
2014-11-19 16:06 ` Mathias Nyman
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