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usb: chipidea: permit driver bindings pass phy pointer

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Sometimes, the driver bindings may know what phy they use.
For example, when using device tree, the usb controller may have a
phandler pointing to usb phy.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Subodh Nijsure <snijsure@grid-net.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Richard Zhao 2012-07-07 22:56:46 +08:00 committed by Greg Kroah-Hartman
parent 526c51382d
commit a2c3d6902f
5 changed files with 17 additions and 4 deletions
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2
drivers/usb/chipidea/ci.h
View File

@ -160,6 +160,8 @@ struct ci13xxx {
struct ci13xxx_platform_data *platdata;
int vbus_active;
/* FIXME: some day, we'll not use global phy */
bool global_phy;
struct usb_phy *transceiver;
struct usb_hcd *hcd;
};

4
drivers/usb/chipidea/core.c
View File

@ -419,6 +419,10 @@ static int __devinit ci_hdrc_probe(struct platform_device *pdev)
ci->dev = dev;
ci->platdata = dev->platform_data;
if (ci->platdata->phy)
ci->transceiver = ci->platdata->phy;
else
ci->global_phy = true;
ret = hw_device_init(ci, base);
if (ret < 0) {

1
drivers/usb/chipidea/host.c
View File

@ -117,6 +117,7 @@ static int host_start(struct ci13xxx *ci)
hcd->has_tt = 1;
hcd->power_budget = ci->platdata->power_budget;
hcd->phy = ci->transceiver;
ehci = hcd_to_ehci(hcd);
ehci->caps = ci->hw_bank.cap;

11
drivers/usb/chipidea/udc.c
View File

@ -1685,7 +1685,8 @@ static int udc_start(struct ci13xxx *ci)
ci->gadget.ep0 = &ci->ep0in->ep;
ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (ci->global_phy)
ci->transceiver = usb_get_phy(USB_PHY_TYPE_USB2);
if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
if (ci->transceiver == NULL) {
@ -1729,7 +1730,8 @@ static int udc_start(struct ci13xxx *ci)
remove_trans:
if (!IS_ERR_OR_NULL(ci->transceiver)) {
otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
usb_put_phy(ci->transceiver);
if (ci->global_phy)
usb_put_phy(ci->transceiver);
}
dev_err(dev, "error = %i\n", retval);
@ -1738,7 +1740,7 @@ remove_dbg:
unreg_device:
device_unregister(&ci->gadget.dev);
put_transceiver:
if (!IS_ERR_OR_NULL(ci->transceiver))
if (!IS_ERR_OR_NULL(ci->transceiver) && ci->global_phy)
usb_put_phy(ci->transceiver);
free_pools:
dma_pool_destroy(ci->td_pool);
@ -1772,7 +1774,8 @@ static void udc_stop(struct ci13xxx *ci)
if (!IS_ERR_OR_NULL(ci->transceiver)) {
otg_set_peripheral(ci->transceiver->otg, NULL);
usb_put_phy(ci->transceiver);
if (ci->global_phy)
usb_put_phy(ci->transceiver);
}
dbg_remove_files(&ci->gadget.dev);
device_unregister(&ci->gadget.dev);

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

@ -5,12 +5,15 @@
#ifndef __LINUX_USB_CHIPIDEA_H
#define __LINUX_USB_CHIPIDEA_H
#include <linux/usb/otg.h>
struct ci13xxx;
struct ci13xxx_platform_data {
const char *name;
/* offset of the capability registers */
uintptr_t capoffset;
unsigned power_budget;
struct usb_phy *phy;
unsigned long flags;
#define CI13XXX_REGS_SHARED BIT(0)
#define CI13XXX_REQUIRE_TRANSCEIVER BIT(1)