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staging: octeon-usb: use USB stack to turn on power 

Use USB stack to turn on the power bit. It will also do
the necessary delays.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aaro Koskinen 2015-03-22 17:37:55 +02:00 committed by Greg Kroah-Hartman
parent c8eedbd107
commit 0ed64a4c8f
1 changed files with 9 additions and 10 deletions
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19
drivers/staging/octeon-usb/octeon-hcd.c
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@ -860,12 +860,6 @@ static int cvmx_usb_initialize(struct cvmx_usb_state *usb)
cvmx_usb_write_csr32(usb, CVMX_USBCX_HCFG(usb->index),
usbcx_hcfg.u32);
}
/*
* 3. Program the port power bit to drive VBUS on the USB,
* USBC_HPRT[PRTPWR] = 1
*/
USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index),
union cvmx_usbcx_hprt, prtpwr, 1);
/*
* Steps 4-15 from the manual are done later in the port enable
@ -3354,6 +3348,7 @@ static int octeon_usb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
struct octeon_hcd *priv = hcd_to_octeon(hcd);
struct device *dev = hcd->self.controller;
struct cvmx_usb_port_status usb_port_status;
struct cvmx_usb_state *usb = &priv->usb;
int port_status;
struct usb_hub_descriptor *desc;
unsigned long flags;
@ -3531,7 +3526,14 @@ static int octeon_usb_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
return -EINVAL;
case USB_PORT_FEAT_POWER:
dev_dbg(dev, " POWER\n");
return -EINVAL;
/*
* Program the port power bit to drive VBUS on the USB.
*/
spin_lock_irqsave(&priv->lock, flags);
USB_SET_FIELD32(CVMX_USBCX_HPRT(usb->index),
union cvmx_usbcx_hprt, prtpwr, 1);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
case USB_PORT_FEAT_RESET:
dev_dbg(dev, " RESET\n");
spin_lock_irqsave(&priv->lock, flags);
@ -3709,9 +3711,6 @@ static int octeon_usb_probe(struct platform_device *pdev)
return -1;
}
/* This delay is needed for CN3010, but I don't know why... */
mdelay(10);
status = usb_add_hcd(hcd, irq, 0);
if (status) {
dev_dbg(dev, "USB add HCD failed with %d\n", status);