Merge tag 'usb-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next

Felipe writes:

usb: patches for v3.12 merge window

All patches here have been pending on linux-usb
and sitting in linux-next for a while now.

The biggest things in this tag are:

DWC3 learned proper usage of threaded IRQ
handlers and now we spend very little time
in hardirq context.

MUSB now has proper support for BeagleBone and
Beaglebone Black.

Tegra's USB support also got quite a bit of love
and is learning to use PHY layer and generic DT
attributes.

Other than that, the usual pack of cleanups and
non-critical fixes follow.

Signed-of-by: Felipe Balbi <balbi@ti.com>

Conflicts:
	drivers/usb/gadget/udc-core.c
	drivers/usb/host/ehci-tegra.c
	drivers/usb/musb/omap2430.c
	drivers/usb/musb/tusb6010.c

6 files changed, 49 insertions, 59 deletions

diff --git a/include/linux/platform_data/tegra_usb.h b/include/linux/platform_data/tegra_usb.h
deleted file mode 100644
index 66c673fef40..00000000000
--- a/include/linux/platform_data/tegra_usb.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2010 Google, Inc.
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef _TEGRA_USB_H_
-#define _TEGRA_USB_H_
-
-enum tegra_usb_operating_modes {
-	TEGRA_USB_DEVICE,
-	TEGRA_USB_HOST,
-	TEGRA_USB_OTG,
-};
-
-struct tegra_ehci_platform_data {
-	enum tegra_usb_operating_modes operating_mode;
-	/* power down the phy on bus suspend */
-	int power_down_on_bus_suspend;
-	void *phy_config;
-	int vbus_gpio;
-};
-
-#endif /* _TEGRA_USB_H_ */
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index f1b0dca60f1..942ef5e053b 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -22,6 +22,7 @@
 #include <linux/slab.h>
 #include <linux/scatterlist.h>
 #include <linux/types.h>
+#include <linux/workqueue.h>
 #include <linux/usb/ch9.h>
 
 struct usb_ep;
@@ -475,6 +476,7 @@ struct usb_gadget_ops {
 
 /**
  * struct usb_gadget - represents a usb slave device
+ * @work: (internal use) Workqueue to be used for sysfs_notify()
  * @ops: Function pointers used to access hardware-specific operations.
  * @ep0: Endpoint zero, used when reading or writing responses to
  *	driver setup() requests
@@ -520,6 +522,7 @@ struct usb_gadget_ops {
  * device is acting as a B-Peripheral (so is_a_peripheral is false).
  */
 struct usb_gadget {
+	struct work_struct		work;
 	/* readonly to gadget driver */
 	const struct usb_gadget_ops	*ops;
 	struct usb_ep			*ep0;
@@ -538,6 +541,7 @@ struct usb_gadget {
 	unsigned			out_epnum;
 	unsigned			in_epnum;
 };
+#define work_to_gadget(w)	(container_of((w), struct usb_gadget, work))
 
 static inline void set_gadget_data(struct usb_gadget *gadget, void *data)
 	{ dev_set_drvdata(&gadget->dev, data); }
diff --git a/include/linux/usb/of.h b/include/linux/usb/of.h
index a0ef405368b..8c38aa26b3b 100644
--- a/include/linux/usb/of.h
+++ b/include/linux/usb/of.h
@@ -7,19 +7,27 @@
 #ifndef __LINUX_USB_OF_H
 #define __LINUX_USB_OF_H
 
+#include <linux/usb/ch9.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/phy.h>
 
 #if IS_ENABLED(CONFIG_OF)
 enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np);
+enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np);
 #else
 static inline enum usb_dr_mode of_usb_get_dr_mode(struct device_node *np)
 {
 	return USB_DR_MODE_UNKNOWN;
 }
+
+static inline enum usb_device_speed
+of_usb_get_maximum_speed(struct device_node *np)
+{
+	return USB_SPEED_UNKNOWN;
+}
 #endif
 
-#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_PHY)
+#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_USB_SUPPORT)
 enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np);
 #else
 static inline enum usb_phy_interface of_usb_get_phy_mode(struct device_node *np)
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 44036808bf0..6c0b1c513db 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -142,7 +142,7 @@ extern void usb_remove_phy(struct usb_phy *);
 /* helpers for direct access thru low-level io interface */
 static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
 {
-	if (x->io_ops && x->io_ops->read)
+	if (x && x->io_ops && x->io_ops->read)
 		return x->io_ops->read(x, reg);
 
 	return -EINVAL;
@@ -150,7 +150,7 @@ static inline int usb_phy_io_read(struct usb_phy *x, u32 reg)
 
 static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
 {
-	if (x->io_ops && x->io_ops->write)
+	if (x && x->io_ops && x->io_ops->write)
 		return x->io_ops->write(x, val, reg);
 
 	return -EINVAL;
@@ -159,7 +159,7 @@ static inline int usb_phy_io_write(struct usb_phy *x, u32 val, u32 reg)
 static inline int
 usb_phy_init(struct usb_phy *x)
 {
-	if (x->init)
+	if (x && x->init)
 		return x->init(x);
 
 	return 0;
@@ -168,14 +168,14 @@ usb_phy_init(struct usb_phy *x)
 static inline void
 usb_phy_shutdown(struct usb_phy *x)
 {
-	if (x->shutdown)
+	if (x && x->shutdown)
 		x->shutdown(x);
 }
 
 static inline int
 usb_phy_vbus_on(struct usb_phy *x)
 {
-	if (!x->set_vbus)
+	if (!x || !x->set_vbus)
 		return 0;
 
 	return x->set_vbus(x, true);
@@ -184,7 +184,7 @@ usb_phy_vbus_on(struct usb_phy *x)
 static inline int
 usb_phy_vbus_off(struct usb_phy *x)
 {
-	if (!x->set_vbus)
+	if (!x || !x->set_vbus)
 		return 0;
 
 	return x->set_vbus(x, false);
@@ -258,7 +258,7 @@ usb_phy_set_power(struct usb_phy *x, unsigned mA)
 static inline int
 usb_phy_set_suspend(struct usb_phy *x, int suspend)
 {
-	if (x->set_suspend != NULL)
+	if (x && x->set_suspend != NULL)
 		return x->set_suspend(x, suspend);
 	else
 		return 0;
@@ -267,7 +267,7 @@ usb_phy_set_suspend(struct usb_phy *x, int suspend)
 static inline int
 usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
 {
-	if (x->notify_connect)
+	if (x && x->notify_connect)
 		return x->notify_connect(x, speed);
 	else
 		return 0;
@@ -276,7 +276,7 @@ usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
 static inline int
 usb_phy_notify_disconnect(struct usb_phy *x, enum usb_device_speed speed)
 {
-	if (x->notify_disconnect)
+	if (x && x->notify_disconnect)
 		return x->notify_disconnect(x, speed);
 	else
 		return 0;
diff --git a/include/linux/usb/tegra_usb_phy.h b/include/linux/usb/tegra_usb_phy.h
index d2ca919a5b7..1de16c324ec 100644
--- a/include/linux/usb/tegra_usb_phy.h
+++ b/include/linux/usb/tegra_usb_phy.h
@@ -18,19 +18,36 @@
 #include <linux/clk.h>
 #include <linux/usb/otg.h>
 
+/*
+ * utmi_pll_config_in_car_module: true if the UTMI PLL configuration registers
+ *     should be set up by clk-tegra, false if by the PHY code
+ * has_hostpc: true if the USB controller has the HOSTPC extension, which
+ *     changes the location of the PHCD and PTS fields
+ * requires_usbmode_setup: true if the USBMODE register needs to be set to
+ *      enter host mode
+ * requires_extra_tuning_parameters: true if xcvr_hsslew, hssquelch_level
+ *      and hsdiscon_level should be set for adequate signal quality
+ */
+
+struct tegra_phy_soc_config {
+	bool utmi_pll_config_in_car_module;
+	bool has_hostpc;
+	bool requires_usbmode_setup;
+	bool requires_extra_tuning_parameters;
+};
+
 struct tegra_utmip_config {
 	u8 hssync_start_delay;
 	u8 elastic_limit;
 	u8 idle_wait_delay;
 	u8 term_range_adj;
+	bool xcvr_setup_use_fuses;
 	u8 xcvr_setup;
 	u8 xcvr_lsfslew;
 	u8 xcvr_lsrslew;
-};
-
-struct tegra_ulpi_config {
-	int reset_gpio;
-	const char *clk;
+	u8 xcvr_hsslew;
+	u8 hssquelch_level;
+	u8 hsdiscon_level;
 };
 
 enum tegra_usb_phy_port_speed {
@@ -39,12 +56,6 @@ enum tegra_usb_phy_port_speed {
 	TEGRA_USB_PHY_PORT_SPEED_HIGH,
 };
 
-enum tegra_usb_phy_mode {
-	TEGRA_USB_PHY_MODE_DEVICE,
-	TEGRA_USB_PHY_MODE_HOST,
-	TEGRA_USB_PHY_MODE_OTG,
-};
-
 struct tegra_xtal_freq;
 
 struct tegra_usb_phy {
@@ -55,18 +66,17 @@ struct tegra_usb_phy {
 	struct clk *clk;
 	struct clk *pll_u;
 	struct clk *pad_clk;
-	enum tegra_usb_phy_mode mode;
+	struct regulator *vbus;
+	enum usb_dr_mode mode;
 	void *config;
+	const struct tegra_phy_soc_config *soc_config;
 	struct usb_phy *ulpi;
 	struct usb_phy u_phy;
-	struct device *dev;
 	bool is_legacy_phy;
 	bool is_ulpi_phy;
 	int reset_gpio;
 };
 
-struct usb_phy *tegra_usb_get_phy(struct device_node *dn);
-
 void tegra_usb_phy_preresume(struct usb_phy *phy);
 
 void tegra_usb_phy_postresume(struct usb_phy *phy);
diff --git a/include/linux/usb/nop-usb-xceiv.h b/include/linux/usb/usb_phy_gen_xceiv.h
index 148d35171aa..f9a7e7bc925 100644
--- a/include/linux/usb/nop-usb-xceiv.h
+++ b/include/linux/usb/usb_phy_gen_xceiv.h
@@ -3,7 +3,7 @@
 
 #include <linux/usb/otg.h>
 
-struct nop_usb_xceiv_platform_data {
+struct usb_phy_gen_xceiv_platform_data {
 	enum usb_phy_type type;
 	unsigned long clk_rate;
 
@@ -12,7 +12,7 @@ struct nop_usb_xceiv_platform_data {
 	unsigned int needs_reset:1;
 };
 
-#if defined(CONFIG_NOP_USB_XCEIV) || (defined(CONFIG_NOP_USB_XCEIV_MODULE) && defined(MODULE))
+#if IS_ENABLED(CONFIG_NOP_USB_XCEIV)
 /* sometimes transceivers are accessed only through e.g. ULPI */
 extern void usb_nop_xceiv_register(void);
 extern void usb_nop_xceiv_unregister(void);