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usb: chipidea: add flag for imx hsic implementation

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NXP (Freecale) imx HSIC design has some special requirements, add
some flags at host code to handle them.

Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Tested-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
This commit is contained in:
Peter Chen
2018-10-15 17:02:57 +08:00
parent e67ebf1b38
commit 014abe34a9
2 changed files with 20 additions and 0 deletions
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17
drivers/usb/chipidea/host.c
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@@ -170,6 +170,11 @@ static int host_start(struct ci_hdrc *ci)
otg->host = &hcd->self;
hcd->self.otg_port = 1;
}
if (ci->platdata->notify_event &&
(ci->platdata->flags & CI_HDRC_IMX_IS_HSIC))
ci->platdata->notify_event
(ci, CI_HDRC_IMX_HSIC_ACTIVE_EVENT);
}
return ret;
@@ -218,6 +223,8 @@ void ci_hdrc_host_destroy(struct ci_hdrc *ci)
static int ci_ehci_bus_suspend(struct usb_hcd *hcd)
{
struct ehci_hcd *ehci = hcd_to_ehci(hcd);
struct device *dev = hcd->self.controller;
struct ci_hdrc *ci = dev_get_drvdata(dev);
int port;
u32 tmp;
@@ -249,6 +256,16 @@ static int ci_ehci_bus_suspend(struct usb_hcd *hcd)
* It needs a short delay between set RS bit and PHCD.
*/
usleep_range(150, 200);
/*
* Need to clear WKCN and WKOC for imx HSIC,
* otherwise, there will be wakeup event.
*/
if (ci->platdata->flags & CI_HDRC_IMX_IS_HSIC) {
tmp = ehci_readl(ehci, reg);
tmp &= ~(PORT_WKDISC_E | PORT_WKCONN_E);
ehci_writel(ehci, tmp, reg);
}
break;
}
}