redonkable/alistair23-linux
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USB: bcma: initialize Northstar USB 3.0 controller

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It's a rather simple controller, we just need to make sure USB is
powered (using GPIO pin) and reset bus core. Once this is done it's
safe to register XHCI controller and let it init PHY and do its magic.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rafał Miłecki 2016-07-08 14:02:50 +02:00 committed by Greg Kroah-Hartman
parent a094760b9a
commit 3cc7e7b787
1 changed files with 19 additions and 0 deletions
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19
drivers/usb/host/bcma-hcd.c
View file

@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_platform.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
@ -338,6 +339,18 @@ err_unregister_ohci_dev:
return err;
}
static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)
{
struct bcma_device *core = bcma_hcd->core;
struct device *dev = &core->dev;
bcma_core_enable(core, 0);
of_platform_default_populate(dev->of_node, NULL, dev);
return 0;
}
static int bcma_hcd_probe(struct bcma_device *core)
{
int err;
@ -362,6 +375,11 @@ static int bcma_hcd_probe(struct bcma_device *core)
if (err)
return err;
break;
case BCMA_CORE_NS_USB30:
err = bcma_hcd_usb30_init(usb_dev);
if (err)
return err;
break;
default:
return -ENODEV;
}
@ -416,6 +434,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
static const struct bcma_device_id bcma_hcd_table[] = {
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB30, BCMA_ANY_REV, BCMA_ANY_CLASS),
{},
};
MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);