[PATCH 1/9] USB: add usb phy header file
Sascha Hauer
s.hauer at pengutronix.de
Fri Sep 26 01:22:07 PDT 2014
Mostly taken from the Linux Kernel to ease porting phy
handling code.
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
drivers/usb/core/of.c | 1 +
drivers/usb/imx/chipidea-imx.c | 1 +
include/usb/phy.h | 220 +++++++++++++++++++++++++++++++++++++++++
include/usb/usb.h | 9 --
4 files changed, 222 insertions(+), 9 deletions(-)
create mode 100644 include/usb/phy.h
diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c
index 1ddbdaa..fd20368 100644
--- a/drivers/usb/core/of.c
+++ b/drivers/usb/core/of.c
@@ -16,6 +16,7 @@
#include <common.h>
#include <usb/usb.h>
+#include <usb/phy.h>
#include <of.h>
static const char *usb_dr_modes[] = {
diff --git a/drivers/usb/imx/chipidea-imx.c b/drivers/usb/imx/chipidea-imx.c
index 62feae8..959f5ba 100644
--- a/drivers/usb/imx/chipidea-imx.c
+++ b/drivers/usb/imx/chipidea-imx.c
@@ -22,6 +22,7 @@
#include <usb/ehci.h>
#include <regulator.h>
#include <usb/chipidea-imx.h>
+#include <usb/phy.h>
#include <usb/ulpi.h>
#include <usb/fsl_usb2.h>
diff --git a/include/usb/phy.h b/include/usb/phy.h
new file mode 100644
index 0000000..057ad1c
--- /dev/null
+++ b/include/usb/phy.h
@@ -0,0 +1,220 @@
+/* USB OTG (On The Go) defines */
+/*
+ *
+ * These APIs may be used between USB controllers. USB device drivers
+ * (for either host or peripheral roles) don't use these calls; they
+ * continue to use just usb_device and usb_gadget.
+ */
+
+#ifndef __LINUX_USB_PHY_H
+#define __LINUX_USB_PHY_H
+
+#include <notifier.h>
+#include <usb/usb.h>
+#include <linux/err.h>
+
+enum usb_phy_interface {
+ USBPHY_INTERFACE_MODE_UNKNOWN,
+ USBPHY_INTERFACE_MODE_UTMI,
+ USBPHY_INTERFACE_MODE_UTMIW,
+ USBPHY_INTERFACE_MODE_ULPI,
+ USBPHY_INTERFACE_MODE_SERIAL,
+ USBPHY_INTERFACE_MODE_HSIC,
+};
+
+enum usb_phy_events {
+ USB_EVENT_NONE, /* no events or cable disconnected */
+ USB_EVENT_VBUS, /* vbus valid event */
+ USB_EVENT_ID, /* id was grounded */
+ USB_EVENT_CHARGER, /* usb dedicated charger */
+ USB_EVENT_ENUMERATED, /* gadget driver enumerated */
+};
+
+/* associate a type with PHY */
+enum usb_phy_type {
+ USB_PHY_TYPE_UNDEFINED,
+ USB_PHY_TYPE_USB2,
+ USB_PHY_TYPE_USB3,
+};
+
+struct usb_phy;
+
+/* for transceivers connected thru an ULPI interface, the user must
+ * provide access ops
+ */
+struct usb_phy_io_ops {
+ int (*read)(struct usb_phy *x, u32 reg);
+ int (*write)(struct usb_phy *x, u32 val, u32 reg);
+};
+
+struct usb_phy {
+ struct device_d *dev;
+ const char *label;
+ unsigned int flags;
+
+ enum usb_phy_type type;
+ enum usb_phy_events last_event;
+
+ struct usb_phy_io_ops *io_ops;
+ void __iomem *io_priv;
+
+ /* to pass extra port status to the root hub */
+ u16 port_status;
+ u16 port_change;
+
+ /* to support controllers that have multiple transceivers */
+ struct list_head head;
+
+ /* initialize/shutdown the OTG controller */
+ int (*init)(struct usb_phy *x);
+ void (*shutdown)(struct usb_phy *x);
+
+ /* enable/disable VBUS */
+ int (*set_vbus)(struct usb_phy *x, int on);
+
+ /* effective for B devices, ignored for A-peripheral */
+ int (*set_power)(struct usb_phy *x,
+ unsigned mA);
+
+ /* for non-OTG B devices: set transceiver into suspend mode */
+ int (*set_suspend)(struct usb_phy *x,
+ int suspend);
+
+ /*
+ * Set wakeup enable for PHY, in that case, the PHY can be
+ * woken up from suspend status due to external events,
+ * like vbus change, dp/dm change and id.
+ */
+ int (*set_wakeup)(struct usb_phy *x, bool enabled);
+
+ /* notify phy connect status change */
+ int (*notify_connect)(struct usb_phy *x,
+ enum usb_device_speed speed);
+ int (*notify_disconnect)(struct usb_phy *x,
+ enum usb_device_speed speed);
+};
+
+/**
+ * struct usb_phy_bind - represent the binding for the phy
+ * @dev_name: the device name of the device that will bind to the phy
+ * @phy_dev_name: the device name of the phy
+ * @index: used if a single controller uses multiple phys
+ * @phy: reference to the phy
+ * @list: to maintain a linked list of the binding information
+ */
+struct usb_phy_bind {
+ const char *dev_name;
+ const char *phy_dev_name;
+ u8 index;
+ struct usb_phy *phy;
+ struct list_head list;
+};
+
+/* helpers for direct access thru low-level io interface */
+static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
+{
+ if (x && x->io_ops && x->io_ops->read)
+ return x->io_ops->read(x, reg);
+
+ return -EINVAL;
+}
+
+static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
+{
+ if (x && x->io_ops && x->io_ops->write)
+ return x->io_ops->write(x, val, reg);
+
+ return -EINVAL;
+}
+
+static inline int
+usb_phy_init(struct usb_phy *x)
+{
+ if (x && x->init)
+ return x->init(x);
+
+ return 0;
+}
+
+static inline void
+usb_phy_shutdown(struct usb_phy *x)
+{
+ if (x && x->shutdown)
+ x->shutdown(x);
+}
+
+static inline int
+usb_phy_vbus_on(struct usb_phy *x)
+{
+ if (!x || !x->set_vbus)
+ return 0;
+
+ return x->set_vbus(x, true);
+}
+
+static inline int
+usb_phy_vbus_off(struct usb_phy *x)
+{
+ if (!x || !x->set_vbus)
+ return 0;
+
+ return x->set_vbus(x, false);
+}
+
+static inline int
+usb_phy_set_power(struct usb_phy *x, unsigned mA)
+{
+ if (x && x->set_power)
+ return x->set_power(x, mA);
+ return 0;
+}
+
+/* Context: can sleep */
+static inline int
+usb_phy_set_suspend(struct usb_phy *x, int suspend)
+{
+ if (x && x->set_suspend != NULL)
+ return x->set_suspend(x, suspend);
+ else
+ return 0;
+}
+
+static inline int
+usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
+{
+ if (x && x->set_wakeup)
+ return x->set_wakeup(x, enabled);
+ else
+ return 0;
+}
+
+static inline int
+usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
+{
+ if (x && x->notify_connect)
+ return x->notify_connect(x, speed);
+ else
+ return 0;
+}
+
+static inline int
+usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed)
+{
+ if (x && x->notify_disconnect)
+ return x->notify_disconnect(x, speed);
+ else
+ return 0;
+}
+
+static inline const char *usb_phy_type_string(enum usb_phy_type type)
+{
+ switch (type) {
+ case USB_PHY_TYPE_USB2:
+ return "USB2 PHY";
+ case USB_PHY_TYPE_USB3:
+ return "USB3 PHY";
+ default:
+ return "UNKNOWN PHY TYPE";
+ }
+}
+#endif /* __LINUX_USB_PHY_H */
diff --git a/include/usb/usb.h b/include/usb/usb.h
index 82acf20..f02f1fb 100644
--- a/include/usb/usb.h
+++ b/include/usb/usb.h
@@ -440,15 +440,6 @@ enum usb_dr_mode {
enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np,
const char *propname);
-enum usb_phy_interface {
- USBPHY_INTERFACE_MODE_UNKNOWN,
- USBPHY_INTERFACE_MODE_UTMI,
- USBPHY_INTERFACE_MODE_UTMIW,
- USBPHY_INTERFACE_MODE_ULPI,
- USBPHY_INTERFACE_MODE_SERIAL,
- USBPHY_INTERFACE_MODE_HSIC,
-};
-
extern struct list_head usb_device_list;
#endif /*_USB_H_ */
--
2.1.0
More information about the barebox
mailing list