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@xxxxxxxxxxxxx>
Reviewed-by: Marek Vasut <marex@xxxxxxx>
Acked-by: Felipe Balbi <balbi@xxxxxx>
Tested-by: Subodh Nijsure <snijsure@xxxxxxxxxxxx>
---
drivers/usb/chipidea/ci.h | 2 ++
drivers/usb/chipidea/core.c | 4 ++++
drivers/usb/chipidea/host.c | 1 +
drivers/usb/chipidea/udc.c | 11 +++++++----
include/linux/usb/chipidea.h | 3 +++
5 files changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
index 9655e35..d738603 100644
--- a/drivers/usb/chipidea/ci.h
+++ b/drivers/usb/chipidea/ci.h
@@ -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;
};
diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index c14ce2b..21407e7 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -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) {
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 4a4fdb8..ebff9f4 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -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;
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index ca9b387..b43b29c 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1684,7 +1684,8 @@ static int udc_start(struct ci13xxx *ci)
ci->gadget.ep0 = &ci->ep0in->ep;
- ci->transceiver = usb_get_transceiver();
+ if (ci->global_phy) {
+ ci->transceiver = usb_get_transceiver();
if (ci->platdata->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
if (ci->transceiver == NULL) {
@@ -1728,7 +1729,8 @@ static int udc_start(struct ci13xxx *ci)
remove_trans:
if (ci->transceiver) {
otg_set_peripheral(ci->transceiver->otg, &ci->gadget);
- usb_put_transceiver(ci->transceiver);
+ if (ci->global_phy)
+ usb_put_transceiver(ci->transceiver);
}
dev_err(dev, "error = %i\n", retval);
@@ -1737,7 +1739,7 @@ remove_dbg:
unreg_device:
device_unregister(&ci->gadget.dev);
put_transceiver:
- if (ci->transceiver)
+ if (ci->transceiver && ci->global_phy)
usb_put_transceiver(ci->transceiver);
free_pools:
dma_pool_destroy(ci->td_pool);
@@ -1771,7 +1773,8 @@ static void udc_stop(struct ci13xxx *ci)
if (ci->transceiver) {
otg_set_peripheral(ci->transceiver->otg, NULL);
- usb_put_transceiver(ci->transceiver);
+ if (ci->global_phy)
+ usb_put_transceiver(ci->transceiver);
}
dbg_remove_files(&ci->gadget.dev);
device_unregister(&ci->gadget.dev);
diff --git a/include/linux/usb/chipidea.h b/include/linux/usb/chipidea.h
index be078f0..544825d 100644
--- a/include/linux/usb/chipidea.h
+++ b/include/linux/usb/chipidea.h
@@ -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)
--
1.7.9.5
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