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USB: isp1760: don't auto disable Port1 on ISP1761 

There is no need to disable port 1 on ISP1761. That port could
be used as an OTG port which would require a different init
sequence. However we don't have OTG support (yet) so we can use
it as a normal USB port.
This patch allows port 1 to be used a normal Port on the ISP1761.

Signed-off-by: Thomas Hommel <Thomas.Hommel@gefanuc.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Thomas Hommel 2008-12-18 10:31:40 +01:00 committed by Greg Kroah-Hartman
parent 281b064f23
commit 42c65396d4
3 changed files with 6 additions and 11 deletions
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13
drivers/usb/host/isp1760-hcd.c
View File

@ -435,14 +435,13 @@ static int isp1760_hc_setup(struct usb_hcd *hcd)
/*
* PORT 1 Control register of the ISP1760 is the OTG control
* register on ISP1761.
* register on ISP1761. Since there is no OTG or device controller
* support in this driver, we use port 1 as a "normal" USB host port on
* both chips.
*/
if (!(priv->devflags & ISP1760_FLAG_ISP1761) &&
!(priv->devflags & ISP1760_FLAG_PORT1_DIS)) {
isp1760_writel(PORT1_POWER | PORT1_INIT2,
hcd->regs + HC_PORT1_CTRL);
mdelay(10);
}
isp1760_writel(PORT1_POWER | PORT1_INIT2,
hcd->regs + HC_PORT1_CTRL);
mdelay(10);
priv->hcs_params = isp1760_readl(hcd->regs + HC_HCSPARAMS);

1
drivers/usb/host/isp1760-hcd.h
View File

@ -135,7 +135,6 @@ typedef void (packet_enqueue)(struct usb_hcd *hcd, struct isp1760_qh *qh,
* indicate the most "atypical" case, so that a devflags of 0 is
* a sane default configuration.
*/
#define ISP1760_FLAG_PORT1_DIS 0x00000001 /* Port 1 disabled */
#define ISP1760_FLAG_BUS_WIDTH_16 0x00000002 /* 16-bit data bus width */
#define ISP1760_FLAG_OTG_EN 0x00000004 /* Port 1 supports OTG */
#define ISP1760_FLAG_ANALOG_OC 0x00000008 /* Analog overcurrent */

3
drivers/usb/host/isp1760-if.c
View File

@ -60,9 +60,6 @@ static int of_isp1760_probe(struct of_device *dev,
if (of_device_is_compatible(dp, "nxp,usb-isp1761"))
devflags |= ISP1760_FLAG_ISP1761;
if (of_get_property(dp, "port1-disable", NULL) != NULL)
devflags |= ISP1760_FLAG_PORT1_DIS;
/* Some systems wire up only 16 of the 32 data lines */
prop = of_get_property(dp, "bus-width", NULL);
if (prop && *prop == 16)