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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
View File

@ -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;
}
}

3
include/linux/usb/chipidea.h
View File

@ -60,9 +60,12 @@ struct ci_hdrc_platform_data {
#define CI_HDRC_OVERRIDE_RX_BURST BIT(11)
#define CI_HDRC_OVERRIDE_PHY_CONTROL BIT(12) /* Glue layer manages phy */
#define CI_HDRC_REQUIRES_ALIGNED_DMA BIT(13)
#define CI_HDRC_IMX_IS_HSIC BIT(14)
enum usb_dr_mode dr_mode;
#define CI_HDRC_CONTROLLER_RESET_EVENT 0
#define CI_HDRC_CONTROLLER_STOPPED_EVENT 1
#define CI_HDRC_IMX_HSIC_ACTIVE_EVENT 2
#define CI_HDRC_IMX_HSIC_SUSPEND_EVENT 3
int (*notify_event) (struct ci_hdrc *ci, unsigned event);
struct regulator *reg_vbus;
struct usb_otg_caps ci_otg_caps;