From f1407d5c66240b33d11a7f1a41d55ccf6a9d7647 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Mon, 4 Apr 2011 13:44:59 +0900
Subject: usb: renesas_usbhs: Add Renesas USBHS common code

Renesas SuperH has USBHS IP which can switch Host / Function.
This driver is designed so that Host / Function may dynamically change.
This patch add usb/renesas_usbhs and common code for SuperH USBHS.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/usb/renesas_usbhs.h | 149 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 include/linux/usb/renesas_usbhs.h

(limited to 'include')

diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
new file mode 100644
index 000000000000..565bca3aa440
--- /dev/null
+++ b/include/linux/usb/renesas_usbhs.h
@@ -0,0 +1,149 @@
+/*
+ * Renesas USB
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+#ifndef RENESAS_USB_H
+#define RENESAS_USB_H
+#include <linux/platform_device.h>
+#include <linux/usb/ch9.h>
+
+/*
+ * module type
+ *
+ * it will be return value from get_id
+ */
+enum {
+	USBHS_HOST = 0,
+	USBHS_GADGET,
+	USBHS_MAX,
+};
+
+/*
+ * callback functions table for driver
+ *
+ * These functions are called from platform for driver.
+ * Callback function's pointer will be set before
+ * renesas_usbhs_platform_callback :: hardware_init was called
+ */
+struct renesas_usbhs_driver_callback {
+	int (*notify_hotplug)(struct platform_device *pdev);
+};
+
+/*
+ * callback functions for platform
+ *
+ * These functions are called from driver for platform
+ */
+struct renesas_usbhs_platform_callback {
+
+	/*
+	 * option:
+	 *
+	 * Hardware init function for platform.
+	 * it is called when driver was probed.
+	 */
+	int (*hardware_init)(struct platform_device *pdev);
+
+	/*
+	 * option:
+	 *
+	 * Hardware exit function for platform.
+	 * it is called when driver was removed
+	 */
+	void (*hardware_exit)(struct platform_device *pdev);
+
+	/*
+	 * option:
+	 *
+	 * Phy reset for platform
+	 */
+	void (*phy_reset)(struct platform_device *pdev);
+
+	/*
+	 * get USB ID function
+	 *  - USBHS_HOST
+	 *  - USBHS_GADGET
+	 */
+	int (*get_id)(struct platform_device *pdev);
+
+	/*
+	 * get VBUS status function.
+	 */
+	int (*get_vbus)(struct platform_device *pdev);
+};
+
+/*
+ * parameters for renesas usbhs
+ *
+ * some register needs USB chip specific parameters.
+ * This struct show it to driver
+ */
+struct renesas_usbhs_driver_param {
+	/*
+	 * pipe settings
+	 */
+	u32 *pipe_type; /* array of USB_ENDPOINT_XFER_xxx (from ep0) */
+	int pipe_size; /* pipe_type array size */
+
+	/*
+	 * option:
+	 *
+	 * for BUSWAIT :: BWAIT
+	 * */
+	int buswait_bwait;
+};
+
+/*
+ * option:
+ *
+ * platform information for renesas_usbhs driver.
+ */
+struct renesas_usbhs_platform_info {
+	/*
+	 * option:
+	 *
+	 * platform set these functions before
+	 * call platform_add_devices if needed
+	 */
+	struct renesas_usbhs_platform_callback	platform_callback;
+
+	/*
+	 * driver set these callback functions pointer.
+	 * platform can use it on callback functions
+	 */
+	struct renesas_usbhs_driver_callback	driver_callback;
+
+	/*
+	 * option:
+	 *
+	 * driver use these param for some register
+	 */
+	struct renesas_usbhs_driver_param	driver_param;
+};
+
+/*
+ * macro for platform
+ */
+#define renesas_usbhs_get_info(pdev)\
+	((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
+
+#define renesas_usbhs_call_notify_hotplug(pdev)				\
+	({								\
+		struct renesas_usbhs_driver_callback *dc;		\
+		dc = &(renesas_usbhs_get_info(pdev)->driver_callback);	\
+		if (dc)							\
+			dc->notify_hotplug(pdev);			\
+	})
+#endif /* RENESAS_USB_H */
-- 
cgit v1.2.3


From 3ab810f19d71f4083be44b41770bcd784ff82e51 Mon Sep 17 00:00:00 2001
From: Randy Dunlap <randy.dunlap@oracle.com>
Date: Fri, 1 Apr 2011 11:24:30 -0700
Subject: usb gadget: fix all Section mismatch warnings

Fix 41 occurrences of this type of Section mismatch warning
in g_mass_storage, g_serial, g_cdc, g_multi, g_nokia, g_ether, g_ffs:
(the 75 number reported earlier contained some duplicates.)

WARNING: drivers/usb/gadget/g_mass_storage.o(.text+0x687a): Section mismatch in reference from the function fsg_bind() to the function .devinit.text:usb_ep_autoconfig()
The function fsg_bind() references
the function __devinit usb_ep_autoconfig().
This is often because fsg_bind lacks a __devinit
annotation or the annotation of usb_ep_autoconfig is wrong.

Also remove __devinit from usb_ep_autoconfig_reset() to prevent
possible section mismatch problems with it.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc:	Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/usb/gadget.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'include')

diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index e538172c0f64..dd1571db55e7 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -890,8 +890,8 @@ static inline void usb_free_descriptors(struct usb_descriptor_header **v)
 /* utility wrapping a simple endpoint selection policy */
 
 extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,
-			struct usb_endpoint_descriptor *) __devinit;
+			struct usb_endpoint_descriptor *);
 
-extern void usb_ep_autoconfig_reset(struct usb_gadget *) __devinit;
+extern void usb_ep_autoconfig_reset(struct usb_gadget *);
 
 #endif /* __LINUX_USB_GADGET_H */
-- 
cgit v1.2.3


From 6498d9db6d2dad4cf5deb2dd09e0816904f41ca5 Mon Sep 17 00:00:00 2001
From: Alan Stern <stern@rowland.harvard.edu>
Date: Thu, 28 Apr 2011 10:45:24 -0400
Subject: USB: documentation update for the pre_reset method

This patch (as1459) updates the documentation for the pre_reset method
in struct usb_driver.  When a driver is notified of an impending
reset, it must cancel all outstanding I/O and not start any new I/O
until it has been notified that the reset is complete.

As far as I know, most existing drivers that implement pre_reset do
this now.  The major exceptions appear to be the SpeedTouch and
CDC-WDM drivers.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 Documentation/usb/callbacks.txt | 8 +++++---
 include/linux/usb.h             | 6 ++++--
 2 files changed, 9 insertions(+), 5 deletions(-)

(limited to 'include')

diff --git a/Documentation/usb/callbacks.txt b/Documentation/usb/callbacks.txt
index bfb36b34b79e..9e85846bdb98 100644
--- a/Documentation/usb/callbacks.txt
+++ b/Documentation/usb/callbacks.txt
@@ -95,9 +95,11 @@ pre_reset
 
 int (*pre_reset)(struct usb_interface *intf);
 
-Another driver or user space is triggering a reset on the device which
-contains the interface passed as an argument. Cease IO and save any
-device state you need to restore.
+A driver or user space is triggering a reset on the device which
+contains the interface passed as an argument. Cease IO, wait for all
+outstanding URBs to complete, and save any device state you need to
+restore.  No more URBs may be submitted until the post_reset method
+is called.
 
 If you need to allocate memory here, use GFP_NOIO or GFP_ATOMIC, if you
 are in atomic context.
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 65f78ca5d88e..73c7df489607 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -806,8 +806,10 @@ struct usbdrv_wrap {
  * @resume: Called when the device is being resumed by the system.
  * @reset_resume: Called when the suspended device has been reset instead
  *	of being resumed.
- * @pre_reset: Called by usb_reset_device() when the device
- *	is about to be reset.
+ * @pre_reset: Called by usb_reset_device() when the device is about to be
+ *	reset.  This routine must not return until the driver has no active
+ *	URBs for the device, and no more URBs may be submitted until the
+ *	post_reset method is called.
  * @post_reset: Called by usb_reset_device() after the device
  *	has been reset
  * @id_table: USB drivers use ID table to support hotplugging.
-- 
cgit v1.2.3


From af32fe511374f17feb137d7fbfe2f4c73a8f531c Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Thu, 21 Apr 2011 14:10:16 +0900
Subject: usb: renesas_usbhs: remove callback when module removed.

The callback function which is called from platform must be removed
if module removed.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/renesas_usbhs/common.c | 4 ++++
 include/linux/usb/renesas_usbhs.h  | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index d9ad60d1c156..fda586d1f7d8 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -352,9 +352,13 @@ probe_end_kfree:
 static int __devexit usbhs_remove(struct platform_device *pdev)
 {
 	struct usbhs_priv *priv = usbhsc_pdev_to_priv(pdev);
+	struct renesas_usbhs_platform_info *info = pdev->dev.platform_data;
+	struct renesas_usbhs_driver_callback *dfunc = &info->driver_callback;
 
 	dev_dbg(&pdev->dev, "usb remove\n");
 
+	dfunc->notify_hotplug = NULL;
+
 	pm_runtime_disable(&pdev->dev);
 
 	usbhsc_bus_ctrl(priv, 0);
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 565bca3aa440..66bbdd12d153 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -143,7 +143,7 @@ struct renesas_usbhs_platform_info {
 	({								\
 		struct renesas_usbhs_driver_callback *dc;		\
 		dc = &(renesas_usbhs_get_info(pdev)->driver_callback);	\
-		if (dc)							\
+		if (dc && dc->notify_hotplug)				\
 			dc->notify_hotplug(pdev);			\
 	})
 #endif /* RENESAS_USB_H */
-- 
cgit v1.2.3


From bc57381e634782009b1cb2e86b18013699ada576 Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Thu, 28 Apr 2011 16:41:14 +0900
Subject: usb: renesas_usbhs: use delayed_work instead of work_struct

This delay is used to overjump debounce.

And, this patch also move usbhsc_drvcllbck_notify_hotplug to global,
because it will be called from other files.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/renesas_usbhs/common.c | 9 +++++----
 drivers/usb/renesas_usbhs/common.h | 3 ++-
 include/linux/usb/renesas_usbhs.h  | 7 +++++++
 3 files changed, 14 insertions(+), 5 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index db13cef9effe..9a75a45687bb 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -178,7 +178,7 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
 {
 	struct usbhs_priv *priv = container_of(work,
 					       struct usbhs_priv,
-					       notify_hotplug_work);
+					       notify_hotplug_work.work);
 	struct platform_device *pdev = usbhs_priv_to_pdev(priv);
 	struct usbhs_mod *mod = usbhs_mod_get_current(priv);
 	int id;
@@ -224,16 +224,17 @@ static void usbhsc_notify_hotplug(struct work_struct *work)
 	}
 }
 
-static int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
+int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev)
 {
 	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+	int delay = usbhs_get_dparam(priv, detection_delay);
 
 	/*
 	 * This functions will be called in interrupt.
 	 * To make sure safety context,
 	 * use workqueue for usbhs_notify_hotplug
 	 */
-	schedule_work(&priv->notify_hotplug_work);
+	schedule_delayed_work(&priv->notify_hotplug_work, delay);
 	return 0;
 }
 
@@ -300,7 +301,7 @@ static int __devinit usbhs_probe(struct platform_device *pdev)
 	 */
 	priv->irq	= irq;
 	priv->pdev	= pdev;
-	INIT_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
+	INIT_DELAYED_WORK(&priv->notify_hotplug_work, usbhsc_notify_hotplug);
 	spin_lock_init(usbhs_priv_to_lock(priv));
 
 	/* call pipe and module init */
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h
index f3b907d26082..0157eb805cf6 100644
--- a/drivers/usb/renesas_usbhs/common.h
+++ b/drivers/usb/renesas_usbhs/common.h
@@ -177,7 +177,7 @@ struct usbhs_priv {
 	struct renesas_usbhs_platform_callback	*pfunc;
 	struct renesas_usbhs_driver_param	*dparam;
 
-	struct work_struct notify_hotplug_work;
+	struct delayed_work notify_hotplug_work;
 	struct platform_device *pdev;
 
 	spinlock_t		lock;
@@ -200,6 +200,7 @@ u16 usbhs_read(struct usbhs_priv *priv, u32 reg);
 void usbhs_write(struct usbhs_priv *priv, u32 reg, u16 data);
 void usbhs_bset(struct usbhs_priv *priv, u32 reg, u16 mask, u16 data);
 
+int usbhsc_drvcllbck_notify_hotplug(struct platform_device *pdev);
 /*
  * sysconfig
  */
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 66bbdd12d153..3a7f1d982dd6 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -103,6 +103,13 @@ struct renesas_usbhs_driver_param {
 	 * for BUSWAIT :: BWAIT
 	 * */
 	int buswait_bwait;
+
+	/*
+	 * option:
+	 *
+	 * delay time from notify_hotplug callback
+	 */
+	int detection_delay;
 };
 
 /*
-- 
cgit v1.2.3


From 3dacdf11f1f82b98d301d5e1d42cdaea9a39968a Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Fri, 15 Apr 2011 16:18:38 +0200
Subject: usb: factor out state_string() on otg drivers

Provide common otg_state_string() and use
it in drivers.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/otg/isp1301_omap.c | 26 +++-----------------------
 drivers/usb/otg/langwell_otg.c | 40 +++-------------------------------------
 drivers/usb/otg/otg.c          | 35 +++++++++++++++++++++++++++++++++++
 include/linux/usb/otg.h        |  1 +
 4 files changed, 42 insertions(+), 60 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/otg/isp1301_omap.c b/drivers/usb/otg/isp1301_omap.c
index e25700f44b6f..8c282258e1bd 100644
--- a/drivers/usb/otg/isp1301_omap.c
+++ b/drivers/usb/otg/isp1301_omap.c
@@ -234,29 +234,9 @@ isp1301_clear_bits(struct isp1301 *isp, u8 reg, u8 bits)
 
 /*-------------------------------------------------------------------------*/
 
-static const char *state_string(enum usb_otg_state state)
-{
-	switch (state) {
-	case OTG_STATE_A_IDLE:		return "a_idle";
-	case OTG_STATE_A_WAIT_VRISE:	return "a_wait_vrise";
-	case OTG_STATE_A_WAIT_BCON:	return "a_wait_bcon";
-	case OTG_STATE_A_HOST:		return "a_host";
-	case OTG_STATE_A_SUSPEND:	return "a_suspend";
-	case OTG_STATE_A_PERIPHERAL:	return "a_peripheral";
-	case OTG_STATE_A_WAIT_VFALL:	return "a_wait_vfall";
-	case OTG_STATE_A_VBUS_ERR:	return "a_vbus_err";
-	case OTG_STATE_B_IDLE:		return "b_idle";
-	case OTG_STATE_B_SRP_INIT:	return "b_srp_init";
-	case OTG_STATE_B_PERIPHERAL:	return "b_peripheral";
-	case OTG_STATE_B_WAIT_ACON:	return "b_wait_acon";
-	case OTG_STATE_B_HOST:		return "b_host";
-	default:			return "UNDEFINED";
-	}
-}
-
 static inline const char *state_name(struct isp1301 *isp)
 {
-	return state_string(isp->otg.state);
+	return otg_state_string(isp->otg.state);
 }
 
 /*-------------------------------------------------------------------------*/
@@ -501,7 +481,7 @@ static void check_state(struct isp1301 *isp, const char *tag)
 	if (isp->otg.state == state && !extra)
 		return;
 	pr_debug("otg: %s FSM %s/%02x, %s, %06x\n", tag,
-		state_string(state), fsm, state_name(isp),
+		otg_state_string(state), fsm, state_name(isp),
 		omap_readl(OTG_CTRL));
 }
 
@@ -1095,7 +1075,7 @@ static void isp_update_otg(struct isp1301 *isp, u8 stat)
 
 	if (state != isp->otg.state)
 		pr_debug("  isp, %s -> %s\n",
-				state_string(state), state_name(isp));
+				otg_state_string(state), state_name(isp));
 
 #ifdef	CONFIG_USB_OTG
 	/* update the OTG controller state to match the isp1301; may
diff --git a/drivers/usb/otg/langwell_otg.c b/drivers/usb/otg/langwell_otg.c
index e973ff19c55a..f08f784086f7 100644
--- a/drivers/usb/otg/langwell_otg.c
+++ b/drivers/usb/otg/langwell_otg.c
@@ -82,40 +82,6 @@ static struct pci_driver otg_pci_driver = {
 	.resume =	langwell_otg_resume,
 };
 
-static const char *state_string(enum usb_otg_state state)
-{
-	switch (state) {
-	case OTG_STATE_A_IDLE:
-		return "a_idle";
-	case OTG_STATE_A_WAIT_VRISE:
-		return "a_wait_vrise";
-	case OTG_STATE_A_WAIT_BCON:
-		return "a_wait_bcon";
-	case OTG_STATE_A_HOST:
-		return "a_host";
-	case OTG_STATE_A_SUSPEND:
-		return "a_suspend";
-	case OTG_STATE_A_PERIPHERAL:
-		return "a_peripheral";
-	case OTG_STATE_A_WAIT_VFALL:
-		return "a_wait_vfall";
-	case OTG_STATE_A_VBUS_ERR:
-		return "a_vbus_err";
-	case OTG_STATE_B_IDLE:
-		return "b_idle";
-	case OTG_STATE_B_SRP_INIT:
-		return "b_srp_init";
-	case OTG_STATE_B_PERIPHERAL:
-		return "b_peripheral";
-	case OTG_STATE_B_WAIT_ACON:
-		return "b_wait_acon";
-	case OTG_STATE_B_HOST:
-		return "b_host";
-	default:
-		return "UNDEFINED";
-	}
-}
-
 /* HSM timers */
 static inline struct langwell_otg_timer *otg_timer_initializer
 (void (*function)(unsigned long), unsigned long expires, unsigned long data)
@@ -968,7 +934,7 @@ static void langwell_otg_work(struct work_struct *work)
 	pdev = to_pci_dev(lnw->dev);
 
 	dev_dbg(lnw->dev, "%s: old state = %s\n", __func__,
-			state_string(iotg->otg.state));
+			otg_state_string(iotg->otg.state));
 
 	switch (iotg->otg.state) {
 	case OTG_STATE_UNDEFINED:
@@ -1703,7 +1669,7 @@ static void langwell_otg_work(struct work_struct *work)
 	}
 
 	dev_dbg(lnw->dev, "%s: new state = %s\n", __func__,
-			state_string(iotg->otg.state));
+			otg_state_string(iotg->otg.state));
 }
 
 static ssize_t
@@ -1789,7 +1755,7 @@ show_hsm(struct device *_dev, struct device_attribute *attr, char *buf)
 		"b_bus_req = \t%d\n"
 		"b_bus_suspend_tmout = \t%d\n"
 		"b_bus_suspend_vld = \t%d\n",
-		state_string(iotg->otg.state),
+		otg_state_string(iotg->otg.state),
 		iotg->hsm.a_bus_resume,
 		iotg->hsm.a_bus_suspend,
 		iotg->hsm.a_conn,
diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c
index 0a43a7db750f..fb7adeff9ffa 100644
--- a/drivers/usb/otg/otg.c
+++ b/drivers/usb/otg/otg.c
@@ -64,3 +64,38 @@ int otg_set_transceiver(struct otg_transceiver *x)
 	return 0;
 }
 EXPORT_SYMBOL(otg_set_transceiver);
+
+const char *otg_state_string(enum usb_otg_state state)
+{
+	switch (state) {
+	case OTG_STATE_A_IDLE:
+		return "a_idle";
+	case OTG_STATE_A_WAIT_VRISE:
+		return "a_wait_vrise";
+	case OTG_STATE_A_WAIT_BCON:
+		return "a_wait_bcon";
+	case OTG_STATE_A_HOST:
+		return "a_host";
+	case OTG_STATE_A_SUSPEND:
+		return "a_suspend";
+	case OTG_STATE_A_PERIPHERAL:
+		return "a_peripheral";
+	case OTG_STATE_A_WAIT_VFALL:
+		return "a_wait_vfall";
+	case OTG_STATE_A_VBUS_ERR:
+		return "a_vbus_err";
+	case OTG_STATE_B_IDLE:
+		return "b_idle";
+	case OTG_STATE_B_SRP_INIT:
+		return "b_srp_init";
+	case OTG_STATE_B_PERIPHERAL:
+		return "b_peripheral";
+	case OTG_STATE_B_WAIT_ACON:
+		return "b_wait_acon";
+	case OTG_STATE_B_HOST:
+		return "b_host";
+	default:
+		return "UNDEFINED";
+	}
+}
+EXPORT_SYMBOL(otg_state_string);
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 6e40718f5abe..bc84858b3a4d 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -246,5 +246,6 @@ otg_unregister_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
 
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
+extern const char *otg_state_string(enum usb_otg_state state);
 
 #endif /* __LINUX_USB_OTG_H */
-- 
cgit v1.2.3


From 64b3c304bed25388fed48dbdc098dfcad7063d9c Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Mon, 11 Apr 2011 20:19:12 +0200
Subject: usb/ch9: use proper endianess for wBytesPerInterval

while going through Tatyana's changes for the gadget framework I noticed
that this type is not defined as __le16.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
---
 drivers/usb/core/config.c   | 2 +-
 drivers/usb/host/xhci-mem.c | 2 +-
 include/linux/usb/ch9.h     | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/core/config.c b/drivers/usb/core/config.c
index 83126b03e7cf..c962608b4b9a 100644
--- a/drivers/usb/core/config.c
+++ b/drivers/usb/core/config.c
@@ -129,7 +129,7 @@ static void usb_parse_ss_endpoint_companion(struct device *ddev, int cfgno,
 		max_tx = ep->desc.wMaxPacketSize * (desc->bMaxBurst + 1);
 	else
 		max_tx = 999999;
-	if (desc->wBytesPerInterval > max_tx) {
+	if (le16_to_cpu(desc->wBytesPerInterval) > max_tx) {
 		dev_warn(ddev, "%s endpoint with wBytesPerInterval of %d in "
 				"config %d interface %d altsetting %d ep %d: "
 				"setting to %d\n",
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index 500ec7a9eb8a..a4fc4d929385 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1130,7 +1130,7 @@ static u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci,
 		return 0;
 
 	if (udev->speed == USB_SPEED_SUPER)
-		return ep->ss_ep_comp.wBytesPerInterval;
+		return le16_to_cpu(ep->ss_ep_comp.wBytesPerInterval);
 
 	max_packet = GET_MAX_PACKET(le16_to_cpu(ep->desc.wMaxPacketSize));
 	max_burst = (le16_to_cpu(ep->desc.wMaxPacketSize) & 0x1800) >> 11;
diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index b72f305ce6bd..0fd3fbdd8283 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -579,7 +579,7 @@ struct usb_ss_ep_comp_descriptor {
 
 	__u8  bMaxBurst;
 	__u8  bmAttributes;
-	__u16 wBytesPerInterval;
+	__le16 wBytesPerInterval;
 } __attribute__ ((packed));
 
 #define USB_DT_SS_EP_COMP_SIZE		6
-- 
cgit v1.2.3


From 13b7ee2a953f07d994b6bc3439cdd4a718de6f80 Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Mon, 18 Apr 2011 22:01:55 +0200
Subject: USB: ehci-fsl: add MPC5121E specific suspend and resume

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/host/ehci-fsl.c | 153 ++++++++++++++++++++++++++++++++++++++++++++
 drivers/usb/host/ehci-fsl.h |   4 ++
 include/linux/fsl_devices.h |  15 +++++
 3 files changed, 172 insertions(+)

(limited to 'include')

diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 5c761df7fa83..caf3d4ac42bd 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -328,6 +328,149 @@ struct ehci_fsl {
 
 #ifdef CONFIG_PM
 
+#ifdef CONFIG_PPC_MPC512x
+static int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	struct fsl_usb2_platform_data *pdata = dev->platform_data;
+	u32 tmp;
+
+#ifdef DEBUG
+	u32 mode = ehci_readl(ehci, hcd->regs + FSL_SOC_USB_USBMODE);
+	mode &= USBMODE_CM_MASK;
+	tmp = ehci_readl(ehci, hcd->regs + 0x140);	/* usbcmd */
+
+	dev_dbg(dev, "suspend=%d already_suspended=%d "
+		"mode=%d  usbcmd %08x\n", pdata->suspended,
+		pdata->already_suspended, mode, tmp);
+#endif
+
+	/*
+	 * If the controller is already suspended, then this must be a
+	 * PM suspend.  Remember this fact, so that we will leave the
+	 * controller suspended at PM resume time.
+	 */
+	if (pdata->suspended) {
+		dev_dbg(dev, "already suspended, leaving early\n");
+		pdata->already_suspended = 1;
+		return 0;
+	}
+
+	dev_dbg(dev, "suspending...\n");
+
+	hcd->state = HC_STATE_SUSPENDED;
+	dev->power.power_state = PMSG_SUSPEND;
+
+	/* ignore non-host interrupts */
+	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+
+	/* stop the controller */
+	tmp = ehci_readl(ehci, &ehci->regs->command);
+	tmp &= ~CMD_RUN;
+	ehci_writel(ehci, tmp, &ehci->regs->command);
+
+	/* save EHCI registers */
+	pdata->pm_command = ehci_readl(ehci, &ehci->regs->command);
+	pdata->pm_command &= ~CMD_RUN;
+	pdata->pm_status  = ehci_readl(ehci, &ehci->regs->status);
+	pdata->pm_intr_enable  = ehci_readl(ehci, &ehci->regs->intr_enable);
+	pdata->pm_frame_index  = ehci_readl(ehci, &ehci->regs->frame_index);
+	pdata->pm_segment  = ehci_readl(ehci, &ehci->regs->segment);
+	pdata->pm_frame_list  = ehci_readl(ehci, &ehci->regs->frame_list);
+	pdata->pm_async_next  = ehci_readl(ehci, &ehci->regs->async_next);
+	pdata->pm_configured_flag  =
+		ehci_readl(ehci, &ehci->regs->configured_flag);
+	pdata->pm_portsc = ehci_readl(ehci, &ehci->regs->port_status[0]);
+	pdata->pm_usbgenctrl = ehci_readl(ehci,
+					  hcd->regs + FSL_SOC_USB_USBGENCTRL);
+
+	/* clear the W1C bits */
+	pdata->pm_portsc &= cpu_to_hc32(ehci, ~PORT_RWC_BITS);
+
+	pdata->suspended = 1;
+
+	/* clear PP to cut power to the port */
+	tmp = ehci_readl(ehci, &ehci->regs->port_status[0]);
+	tmp &= ~PORT_POWER;
+	ehci_writel(ehci, tmp, &ehci->regs->port_status[0]);
+
+	return 0;
+}
+
+static int ehci_fsl_mpc512x_drv_resume(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	struct fsl_usb2_platform_data *pdata = dev->platform_data;
+	u32 tmp;
+
+	dev_dbg(dev, "suspend=%d already_suspended=%d\n",
+		pdata->suspended, pdata->already_suspended);
+
+	/*
+	 * If the controller was already suspended at suspend time,
+	 * then don't resume it now.
+	 */
+	if (pdata->already_suspended) {
+		dev_dbg(dev, "already suspended, leaving early\n");
+		pdata->already_suspended = 0;
+		return 0;
+	}
+
+	if (!pdata->suspended) {
+		dev_dbg(dev, "not suspended, leaving early\n");
+		return 0;
+	}
+
+	pdata->suspended = 0;
+
+	dev_dbg(dev, "resuming...\n");
+
+	/* set host mode */
+	tmp = USBMODE_CM_HOST | (pdata->es ? USBMODE_ES : 0);
+	ehci_writel(ehci, tmp, hcd->regs + FSL_SOC_USB_USBMODE);
+
+	ehci_writel(ehci, pdata->pm_usbgenctrl,
+		    hcd->regs + FSL_SOC_USB_USBGENCTRL);
+	ehci_writel(ehci, ISIPHYCTRL_PXE | ISIPHYCTRL_PHYE,
+		    hcd->regs + FSL_SOC_USB_ISIPHYCTRL);
+
+	/* restore EHCI registers */
+	ehci_writel(ehci, pdata->pm_command, &ehci->regs->command);
+	ehci_writel(ehci, pdata->pm_intr_enable, &ehci->regs->intr_enable);
+	ehci_writel(ehci, pdata->pm_frame_index, &ehci->regs->frame_index);
+	ehci_writel(ehci, pdata->pm_segment, &ehci->regs->segment);
+	ehci_writel(ehci, pdata->pm_frame_list, &ehci->regs->frame_list);
+	ehci_writel(ehci, pdata->pm_async_next, &ehci->regs->async_next);
+	ehci_writel(ehci, pdata->pm_configured_flag,
+		    &ehci->regs->configured_flag);
+	ehci_writel(ehci, pdata->pm_portsc, &ehci->regs->port_status[0]);
+
+	set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
+	hcd->state = HC_STATE_RUNNING;
+	dev->power.power_state = PMSG_ON;
+
+	tmp = ehci_readl(ehci, &ehci->regs->command);
+	tmp |= CMD_RUN;
+	ehci_writel(ehci, tmp, &ehci->regs->command);
+
+	usb_hcd_resume_root_hub(hcd);
+
+	return 0;
+}
+#else
+static inline int ehci_fsl_mpc512x_drv_suspend(struct device *dev)
+{
+	return 0;
+}
+
+static inline int ehci_fsl_mpc512x_drv_resume(struct device *dev)
+{
+	return 0;
+}
+#endif /* CONFIG_PPC_MPC512x */
+
 static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
 {
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
@@ -341,6 +484,11 @@ static int ehci_fsl_drv_suspend(struct device *dev)
 	struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
 	void __iomem *non_ehci = hcd->regs;
 
+	if (of_device_is_compatible(dev->parent->of_node,
+				    "fsl,mpc5121-usb2-dr")) {
+		return ehci_fsl_mpc512x_drv_suspend(dev);
+	}
+
 	ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd),
 			device_may_wakeup(dev));
 	if (!fsl_deep_sleep())
@@ -357,6 +505,11 @@ static int ehci_fsl_drv_resume(struct device *dev)
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	void __iomem *non_ehci = hcd->regs;
 
+	if (of_device_is_compatible(dev->parent->of_node,
+				    "fsl,mpc5121-usb2-dr")) {
+		return ehci_fsl_mpc512x_drv_resume(dev);
+	}
+
 	ehci_prepare_ports_for_controller_resume(ehci);
 	if (!fsl_deep_sleep())
 		return 0;
diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
index 3fabed33d940..491806221165 100644
--- a/drivers/usb/host/ehci-fsl.h
+++ b/drivers/usb/host/ehci-fsl.h
@@ -27,6 +27,10 @@
 #define	PORT_PTS_SERIAL		(3<<30)
 #define PORT_PTS_PTW		(1<<28)
 #define FSL_SOC_USB_PORTSC2	0x188
+#define FSL_SOC_USB_USBMODE	0x1a8
+#define USBMODE_CM_MASK		(3 << 0)	/* controller mode mask */
+#define USBMODE_CM_HOST		(3 << 0)	/* controller mode: host */
+#define USBMODE_ES		(1 << 2)	/* (Big) Endian Select */
 
 #define FSL_SOC_USB_USBGENCTRL	0x200
 #define USBGENCTRL_PPP		(1 << 3)
diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index 4eb56ed75fbc..3773c5dab8f5 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -79,6 +79,21 @@ struct fsl_usb2_platform_data {
 	unsigned	have_sysif_regs:1;
 	unsigned	invert_drvvbus:1;
 	unsigned	invert_pwr_fault:1;
+
+	unsigned	suspended:1;
+	unsigned	already_suspended:1;
+
+	/* register save area for suspend/resume */
+	u32		pm_command;
+	u32		pm_status;
+	u32		pm_intr_enable;
+	u32		pm_frame_index;
+	u32		pm_segment;
+	u32		pm_frame_list;
+	u32		pm_async_next;
+	u32		pm_configured_flag;
+	u32		pm_portsc;
+	u32		pm_usbgenctrl;
 };
 
 /* Flags in fsl_usb2_mph_platform_data */
-- 
cgit v1.2.3


From 83722bc9430424de1614ff31696f73a40b3d81a9 Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Mon, 18 Apr 2011 22:02:00 +0200
Subject: USB: extend ehci-fsl and fsl_udc_core driver for OTG operation

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Cc: Li Yang <leoli@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/fsl_udc_core.c | 147 ++++++++++++++++++++++++++++++++++----
 drivers/usb/gadget/fsl_usb2_udc.h |   2 +
 drivers/usb/host/ehci-fsl.c       |  66 +++++++++++++++++
 drivers/usb/host/ehci-hub.c       |   8 +++
 drivers/usb/host/ehci.h           |   4 ++
 include/linux/fsl_devices.h       |   1 +
 6 files changed, 213 insertions(+), 15 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index 28b3a9f25f3b..999eafe89653 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -353,6 +353,19 @@ static void dr_controller_stop(struct fsl_udc *udc)
 {
 	unsigned int tmp;
 
+	pr_debug("%s\n", __func__);
+
+	/* if we're in OTG mode, and the Host is currently using the port,
+	 * stop now and don't rip the controller out from under the
+	 * ehci driver
+	 */
+	if (udc->gadget.is_otg) {
+		if (!(fsl_readl(&dr_regs->otgsc) & OTGSC_STS_USB_ID)) {
+			pr_debug("udc: Leaving early\n");
+			return;
+		}
+	}
+
 	/* disable all INTR */
 	fsl_writel(0, &dr_regs->usbintr);
 
@@ -1668,6 +1681,9 @@ static void port_change_irq(struct fsl_udc *udc)
 {
 	u32 speed;
 
+	if (udc->bus_reset)
+		udc->bus_reset = 0;
+
 	/* Bus resetting is finished */
 	if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
 		/* Get the speed */
@@ -1775,6 +1791,8 @@ static void reset_irq(struct fsl_udc *udc)
 
 	if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
 		VDBG("Bus reset");
+		/* Bus is reseting */
+		udc->bus_reset = 1;
 		/* Reset all the queues, include XD, dTD, EP queue
 		 * head and TR Queue */
 		reset_queues(udc);
@@ -1852,6 +1870,7 @@ static irqreturn_t fsl_udc_irq(int irq, void *_udc)
 
 	/* Reset Received */
 	if (irq_src & USB_STS_RESET) {
+		VDBG("reset int");
 		reset_irq(udc);
 		status = IRQ_HANDLED;
 	}
@@ -1909,11 +1928,30 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver,
 		goto out;
 	}
 
-	/* Enable DR IRQ reg and Set usbcmd reg  Run bit */
-	dr_controller_run(udc_controller);
-	udc_controller->usb_state = USB_STATE_ATTACHED;
-	udc_controller->ep0_state = WAIT_FOR_SETUP;
-	udc_controller->ep0_dir = 0;
+	if (udc_controller->transceiver) {
+		/* Suspend the controller until OTG enable it */
+		udc_controller->stopped = 1;
+		printk(KERN_INFO "Suspend udc for OTG auto detect\n");
+
+		/* connect to bus through transceiver */
+		if (udc_controller->transceiver) {
+			retval = otg_set_peripheral(udc_controller->transceiver,
+						    &udc_controller->gadget);
+			if (retval < 0) {
+				ERR("can't bind to transceiver\n");
+				driver->unbind(&udc_controller->gadget);
+				udc_controller->gadget.dev.driver = 0;
+				udc_controller->driver = 0;
+				return retval;
+			}
+		}
+	} else {
+		/* Enable DR IRQ reg and set USBCMD reg Run bit */
+		dr_controller_run(udc_controller);
+		udc_controller->usb_state = USB_STATE_ATTACHED;
+		udc_controller->ep0_state = WAIT_FOR_SETUP;
+		udc_controller->ep0_dir = 0;
+	}
 	printk(KERN_INFO "%s: bind to driver %s\n",
 			udc_controller->gadget.name, driver->driver.name);
 
@@ -2374,17 +2412,30 @@ static int __init fsl_udc_probe(struct platform_device *pdev)
 	spin_lock_init(&udc_controller->lock);
 	udc_controller->stopped = 1;
 
+#ifdef CONFIG_USB_OTG
+	if (pdata->operating_mode == FSL_USB2_DR_OTG) {
+		udc_controller->transceiver = otg_get_transceiver();
+		if (!udc_controller->transceiver) {
+			ERR("Can't find OTG driver!\n");
+			ret = -ENODEV;
+			goto err_kfree;
+		}
+	}
+#endif
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
 		ret = -ENXIO;
 		goto err_kfree;
 	}
 
-	if (!request_mem_region(res->start, res->end - res->start + 1,
-				driver_name)) {
-		ERR("request mem region for %s failed\n", pdev->name);
-		ret = -EBUSY;
-		goto err_kfree;
+	if (pdata->operating_mode == FSL_USB2_DR_DEVICE) {
+		if (!request_mem_region(res->start, res->end - res->start + 1,
+					driver_name)) {
+			ERR("request mem region for %s failed\n", pdev->name);
+			ret = -EBUSY;
+			goto err_kfree;
+		}
 	}
 
 	dr_regs = ioremap(res->start, resource_size(res));
@@ -2455,9 +2506,11 @@ static int __init fsl_udc_probe(struct platform_device *pdev)
 		goto err_free_irq;
 	}
 
-	/* initialize usb hw reg except for regs for EP,
-	 * leave usbintr reg untouched */
-	dr_controller_setup(udc_controller);
+	if (!udc_controller->transceiver) {
+		/* initialize usb hw reg except for regs for EP,
+		 * leave usbintr reg untouched */
+		dr_controller_setup(udc_controller);
+	}
 
 	fsl_udc_clk_finalize(pdev);
 
@@ -2477,6 +2530,9 @@ static int __init fsl_udc_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto err_free_irq;
 
+	if (udc_controller->transceiver)
+		udc_controller->gadget.is_otg = 1;
+
 	/* setup QH and epctrl for ep0 */
 	ep0_setup(udc_controller);
 
@@ -2521,7 +2577,8 @@ err_iounmap:
 err_iounmap_noclk:
 	iounmap(dr_regs);
 err_release_mem_region:
-	release_mem_region(res->start, res->end - res->start + 1);
+	if (pdata->operating_mode == FSL_USB2_DR_DEVICE)
+		release_mem_region(res->start, res->end - res->start + 1);
 err_kfree:
 	kfree(udc_controller);
 	udc_controller = NULL;
@@ -2555,7 +2612,8 @@ static int __exit fsl_udc_remove(struct platform_device *pdev)
 	dma_pool_destroy(udc_controller->td_pool);
 	free_irq(udc_controller->irq, udc_controller);
 	iounmap(dr_regs);
-	release_mem_region(res->start, res->end - res->start + 1);
+	if (pdata->operating_mode == FSL_USB2_DR_DEVICE)
+		release_mem_region(res->start, res->end - res->start + 1);
 
 	device_unregister(&udc_controller->gadget.dev);
 	/* free udc --wait for the release() finished */
@@ -2598,6 +2656,62 @@ static int fsl_udc_resume(struct platform_device *pdev)
 	return 0;
 }
 
+static int fsl_udc_otg_suspend(struct device *dev, pm_message_t state)
+{
+	struct fsl_udc *udc = udc_controller;
+	u32 mode, usbcmd;
+
+	mode = fsl_readl(&dr_regs->usbmode) & USB_MODE_CTRL_MODE_MASK;
+
+	pr_debug("%s(): mode 0x%x stopped %d\n", __func__, mode, udc->stopped);
+
+	/*
+	 * If the controller is already stopped, then this must be a
+	 * PM suspend.  Remember this fact, so that we will leave the
+	 * controller stopped at PM resume time.
+	 */
+	if (udc->stopped) {
+		pr_debug("gadget already stopped, leaving early\n");
+		udc->already_stopped = 1;
+		return 0;
+	}
+
+	if (mode != USB_MODE_CTRL_MODE_DEVICE) {
+		pr_debug("gadget not in device mode, leaving early\n");
+		return 0;
+	}
+
+	/* stop the controller */
+	usbcmd = fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP;
+	fsl_writel(usbcmd, &dr_regs->usbcmd);
+
+	udc->stopped = 1;
+
+	pr_info("USB Gadget suspended\n");
+
+	return 0;
+}
+
+static int fsl_udc_otg_resume(struct device *dev)
+{
+	pr_debug("%s(): stopped %d  already_stopped %d\n", __func__,
+		 udc_controller->stopped, udc_controller->already_stopped);
+
+	/*
+	 * If the controller was stopped at suspend time, then
+	 * don't resume it now.
+	 */
+	if (udc_controller->already_stopped) {
+		udc_controller->already_stopped = 0;
+		pr_debug("gadget was already stopped, leaving early\n");
+		return 0;
+	}
+
+	pr_info("USB Gadget resume\n");
+
+	return fsl_udc_resume(NULL);
+}
+
 /*-------------------------------------------------------------------------
 	Register entry point for the peripheral controller driver
 --------------------------------------------------------------------------*/
@@ -2610,6 +2724,9 @@ static struct platform_driver udc_driver = {
 	.driver  = {
 		.name = (char *)driver_name,
 		.owner = THIS_MODULE,
+		/* udc suspend/resume called from OTG driver */
+		.suspend = fsl_udc_otg_suspend,
+		.resume  = fsl_udc_otg_resume,
 	},
 };
 
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
index 5647cc21b84c..1d51be83fda8 100644
--- a/drivers/usb/gadget/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/fsl_usb2_udc.h
@@ -476,6 +476,7 @@ struct fsl_udc {
 	unsigned vbus_active:1;
 	unsigned stopped:1;
 	unsigned remote_wakeup:1;
+	unsigned already_stopped:1;
 	unsigned big_endian_desc:1;
 
 	struct ep_queue_head *ep_qh;	/* Endpoints Queue-Head */
@@ -487,6 +488,7 @@ struct fsl_udc {
 	dma_addr_t ep_qh_dma;		/* dma address of QH */
 
 	u32 max_pipes;          /* Device max pipes */
+	u32 bus_reset;		/* Device is bus resetting */
 	u32 resume_state;	/* USB state to resume */
 	u32 usb_state;		/* USB current state */
 	u32 ep0_state;		/* Endpoint zero state */
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index caf3d4ac42bd..623732a312dd 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -117,6 +117,9 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 
 	pdata->regs = hcd->regs;
 
+	if (pdata->power_budget)
+		hcd->power_budget = pdata->power_budget;
+
 	/*
 	 * do platform specific init: check the clock, grab/config pins, etc.
 	 */
@@ -134,6 +137,30 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 	retval = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
 	if (retval != 0)
 		goto err4;
+
+#ifdef CONFIG_USB_OTG
+	if (pdata->operating_mode == FSL_USB2_DR_OTG) {
+		struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+		ehci->transceiver = otg_get_transceiver();
+		dev_dbg(&pdev->dev, "hcd=0x%p  ehci=0x%p, transceiver=0x%p\n",
+			hcd, ehci, ehci->transceiver);
+
+		if (ehci->transceiver) {
+			retval = otg_set_host(ehci->transceiver,
+					      &ehci_to_hcd(ehci)->self);
+			if (retval) {
+				if (ehci->transceiver)
+					put_device(ehci->transceiver->dev);
+				goto err4;
+			}
+		} else {
+			dev_err(&pdev->dev, "can't find transceiver\n");
+			retval = -ENODEV;
+			goto err4;
+		}
+	}
+#endif
 	return retval;
 
       err4:
@@ -164,6 +191,12 @@ static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
 			       struct platform_device *pdev)
 {
 	struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+	if (ehci->transceiver) {
+		otg_set_host(ehci->transceiver, NULL);
+		put_device(ehci->transceiver->dev);
+	}
 
 	usb_remove_hcd(hcd);
 
@@ -544,6 +577,38 @@ static struct dev_pm_ops ehci_fsl_pm_ops = {
 #define EHCI_FSL_PM_OPS		NULL
 #endif /* CONFIG_PM */
 
+#ifdef CONFIG_USB_OTG
+static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
+{
+	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+	u32 status;
+
+	if (!port)
+		return -EINVAL;
+
+	port--;
+
+	/* start port reset before HNP protocol time out */
+	status = readl(&ehci->regs->port_status[port]);
+	if (!(status & PORT_CONNECT))
+		return -ENODEV;
+
+	/* khubd will finish the reset later */
+	if (ehci_is_TDI(ehci)) {
+		writel(PORT_RESET |
+		       (status & ~(PORT_CSC | PORT_PEC | PORT_OCC)),
+		       &ehci->regs->port_status[port]);
+	} else {
+		writel(PORT_RESET, &ehci->regs->port_status[port]);
+	}
+
+	return 0;
+}
+#else
+#define ehci_start_port_reset	NULL
+#endif /* CONFIG_USB_OTG */
+
+
 static const struct hc_driver ehci_fsl_hc_driver = {
 	.description = hcd_name,
 	.product_desc = "Freescale On-Chip EHCI Host Controller",
@@ -583,6 +648,7 @@ static const struct hc_driver ehci_fsl_hc_driver = {
 	.hub_control = ehci_hub_control,
 	.bus_suspend = ehci_bus_suspend,
 	.bus_resume = ehci_bus_resume,
+	.start_port_reset = ehci_start_port_reset,
 	.relinquish_port = ehci_relinquish_port,
 	.port_handed_over = ehci_port_handed_over,
 
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 1a21799195af..ea6184bf48d0 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -27,6 +27,7 @@
  */
 
 /*-------------------------------------------------------------------------*/
+#include <linux/usb/otg.h>
 
 #define	PORT_WAKE_BITS	(PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
 
@@ -801,6 +802,13 @@ static int ehci_hub_control (
 				goto error;
 			if (ehci->no_selective_suspend)
 				break;
+#ifdef CONFIG_USB_OTG
+			if ((hcd->self.otg_port == (wIndex + 1))
+			    && hcd->self.b_hnp_enable) {
+				otg_start_hnp(ehci->transceiver);
+				break;
+			}
+#endif
 			if (!(temp & PORT_SUSPEND))
 				break;
 			if ((temp & PORT_PE) == 0)
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 168f1a88c4d0..e9ba8e252489 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -161,6 +161,10 @@ struct ehci_hcd {			/* one per controller */
 #ifdef DEBUG
 	struct dentry		*debug_dir;
 #endif
+	/*
+	 * OTG controllers and transceivers need software interaction
+	 */
+	struct otg_transceiver	*transceiver;
 };
 
 /* convert between an HCD pointer and the corresponding EHCI_HCD */
diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index 3773c5dab8f5..fffdf00f87b9 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -72,6 +72,7 @@ struct fsl_usb2_platform_data {
 	void		(*exit)(struct platform_device *);
 	void __iomem	*regs;		/* ioremap'd register base */
 	struct clk	*clk;
+	unsigned	power_budget;	/* hcd->power_budget */
 	unsigned	big_endian_mmio:1;
 	unsigned	big_endian_desc:1;
 	unsigned	es:1;		/* need USBMODE:ES */
-- 
cgit v1.2.3


From 139540170d9d9b7ead3caaf540f161756b356d56 Mon Sep 17 00:00:00 2001
From: Rabin Vincent <rabin@rab.in>
Date: Wed, 27 Apr 2011 21:07:28 +0530
Subject: USB: ehci: remove structure packing from ehci_def

As pointed out by Arnd Bergmann, in include/linux/usb/ehci_def.h, struct
ehci_caps is defined with __attribute__((packed)) for no good reason,
and this triggers undefined behaviour when using ARM's readl() on
pointers to elements of this structure:

http://lkml.kernel.org/r/201102021700.20683.arnd@arndb.de

The same problem exists with the other two structures in ehci_def.h too,
so remove the __attribute__((packed)) from all of them.

Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/usb/ehci_def.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'include')

diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h
index e49dfd45baa4..78799432008e 100644
--- a/include/linux/usb/ehci_def.h
+++ b/include/linux/usb/ehci_def.h
@@ -52,7 +52,7 @@ struct ehci_caps {
 #define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1))  /* true: periodic_size changes*/
 #define HCC_64BIT_ADDR(p)       ((p)&(1))       /* true: can use 64-bit addr */
 	u8		portroute[8];	 /* nibbles for routing - offset 0xC */
-} __attribute__ ((packed));
+};
 
 
 /* Section 2.3 Host Controller Operational Registers */
@@ -150,7 +150,7 @@ struct ehci_regs {
 #define PORT_CSC	(1<<1)		/* connect status change */
 #define PORT_CONNECT	(1<<0)		/* device connected */
 #define PORT_RWC_BITS   (PORT_CSC | PORT_PEC | PORT_OCC)
-} __attribute__ ((packed));
+};
 
 #define USBMODE		0x68		/* USB Device mode */
 #define USBMODE_SDIS	(1<<3)		/* Stream disable */
@@ -194,7 +194,7 @@ struct ehci_dbg_port {
 	u32	data47;
 	u32	address;
 #define DBGP_EPADDR(dev, ep)	(((dev)<<8)|(ep))
-} __attribute__ ((packed));
+};
 
 #ifdef CONFIG_EARLY_PRINTK_DBGP
 #include <linux/init.h>
-- 
cgit v1.2.3


From c430131a02d677aa708f56342c1565edfdacb3c0 Mon Sep 17 00:00:00 2001
From: Jan Andersson <jan@gaisler.com>
Date: Tue, 3 May 2011 20:11:57 +0200
Subject: USB: EHCI: Support controllers with big endian capability regs

The two first HC capability registers (CAPLENGTH and HCIVERSION)
are defined as one 8-bit and one 16-bit register. Most HC
implementations have selected to treat these registers as part
of a 32-bit register, giving the same layout for both big and
small endian systems.

This patch adds a new quirk, big_endian_capbase, to support
controllers with big endian register interfaces that treat
HCIVERSION and CAPLENGTH as individual registers.

Signed-off-by: Jan Andersson <jan@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/early/ehci-dbgp.c     | 5 ++++-
 drivers/usb/host/ehci-ath79.c     | 8 ++++----
 drivers/usb/host/ehci-atmel.c     | 2 +-
 drivers/usb/host/ehci-au1xxx.c    | 3 ++-
 drivers/usb/host/ehci-cns3xxx.c   | 2 +-
 drivers/usb/host/ehci-dbg.c       | 2 +-
 drivers/usb/host/ehci-fsl.c       | 2 +-
 drivers/usb/host/ehci-hcd.c       | 2 +-
 drivers/usb/host/ehci-ixp4xx.c    | 2 +-
 drivers/usb/host/ehci-msm.c       | 2 +-
 drivers/usb/host/ehci-mxc.c       | 2 +-
 drivers/usb/host/ehci-octeon.c    | 2 +-
 drivers/usb/host/ehci-omap.c      | 2 +-
 drivers/usb/host/ehci-orion.c     | 2 +-
 drivers/usb/host/ehci-pci.c       | 2 +-
 drivers/usb/host/ehci-pmcmsp.c    | 2 +-
 drivers/usb/host/ehci-ppc-of.c    | 2 +-
 drivers/usb/host/ehci-ps3.c       | 2 +-
 drivers/usb/host/ehci-s5p.c       | 3 ++-
 drivers/usb/host/ehci-sh.c        | 2 +-
 drivers/usb/host/ehci-spear.c     | 2 +-
 drivers/usb/host/ehci-tegra.c     | 2 +-
 drivers/usb/host/ehci-vt8500.c    | 3 ++-
 drivers/usb/host/ehci-w90x900.c   | 2 +-
 drivers/usb/host/ehci-xilinx-of.c | 2 +-
 drivers/usb/host/ehci.h           | 7 +++++++
 include/linux/usb/ehci_def.h      | 9 +++++++--
 27 files changed, 48 insertions(+), 30 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index a6a350f5827b..1fc8f1249806 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -102,6 +102,9 @@ static struct kgdb_io kgdbdbgp_io_ops;
 #define dbgp_kgdb_mode (0)
 #endif
 
+/* Local version of HC_LENGTH macro as ehci struct is not available here */
+#define EARLY_HC_LENGTH(p)	(0x00ff & (p)) /* bits 7 : 0 */
+
 /*
  * USB Packet IDs (PIDs)
  */
@@ -892,7 +895,7 @@ int __init early_dbgp_init(char *s)
 	dbgp_printk("ehci_bar: %p\n", ehci_bar);
 
 	ehci_caps  = ehci_bar;
-	ehci_regs  = ehci_bar + HC_LENGTH(readl(&ehci_caps->hc_capbase));
+	ehci_regs  = ehci_bar + EARLY_HC_LENGTH(readl(&ehci_caps->hc_capbase));
 	ehci_debug = ehci_bar + offset;
 	ehci_dev.bus = bus;
 	ehci_dev.slot = slot;
diff --git a/drivers/usb/host/ehci-ath79.c b/drivers/usb/host/ehci-ath79.c
index 7ea23b50f5d8..98cc8a13169c 100644
--- a/drivers/usb/host/ehci-ath79.c
+++ b/drivers/usb/host/ehci-ath79.c
@@ -44,6 +44,7 @@ static int ehci_ath79_init(struct usb_hcd *hcd)
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	struct platform_device *pdev = to_platform_device(hcd->self.controller);
 	const struct platform_device_id *id;
+	int hclength;
 	int ret;
 
 	id = platform_get_device_id(pdev);
@@ -52,21 +53,20 @@ static int ehci_ath79_init(struct usb_hcd *hcd)
 		return -EINVAL;
 	}
 
+	hclength = HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	switch (id->driver_data) {
 	case EHCI_ATH79_IP_V1:
 		ehci->has_synopsys_hc_bug = 1;
 
 		ehci->caps = hcd->regs;
-		ehci->regs = hcd->regs +
-			HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		ehci->regs = hcd->regs + hclength;
 		break;
 
 	case EHCI_ATH79_IP_V2:
 		hcd->has_tt = 1;
 
 		ehci->caps = hcd->regs + 0x100;
-		ehci->regs = hcd->regs + 0x100 +
-			HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		ehci->regs = hcd->regs + 0x100 + hclength;
 		break;
 
 	default:
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index b2ed55cb811d..a5a3ef1f0096 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -56,7 +56,7 @@ static int ehci_atmel_setup(struct usb_hcd *hcd)
 	/* registers start at offset 0x0 */
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
 
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index a869e3c103d3..40b002869ac2 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -175,7 +175,8 @@ static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase));
+	ehci->regs = hcd->regs +
+		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
 	/* cache this readonly data; minimize chip reads */
 	ehci->hcs_params = readl(&ehci->caps->hcs_params);
 
diff --git a/drivers/usb/host/ehci-cns3xxx.c b/drivers/usb/host/ehci-cns3xxx.c
index 708a05b5d258..d41745c6f0c4 100644
--- a/drivers/usb/host/ehci-cns3xxx.c
+++ b/drivers/usb/host/ehci-cns3xxx.c
@@ -34,7 +34,7 @@ static int cns3xxx_ehci_init(struct usb_hcd *hcd)
 
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs
-		+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 
 	hcd->has_tt = 0;
diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 693c29b30521..40a844c1dbb4 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -726,7 +726,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 	}
 
 	/* Capability Registers */
-	i = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
+	i = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	temp = scnprintf (next, size,
 		"bus %s, device %s\n"
 		"%s\n"
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 623732a312dd..f380bf97e5af 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -324,7 +324,7 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
 	/* EHCI registers start at offset 0x100 */
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100 +
-	    HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
 
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 83b7d5f02a15..8164ffafd10a 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -739,7 +739,7 @@ static int ehci_run (struct usb_hcd *hcd)
 	up_write(&ehci_cf_port_reset_rwsem);
 	ehci->last_periodic_enable = ktime_get_real();
 
-	temp = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase));
+	temp = HC_VERSION(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci_info (ehci,
 		"USB %x.%x started, EHCI %x.%02x%s\n",
 		((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c
index 89b7c70c6ed6..50e600d26e28 100644
--- a/drivers/usb/host/ehci-ixp4xx.c
+++ b/drivers/usb/host/ehci-ixp4xx.c
@@ -23,7 +23,7 @@ static int ixp4xx_ehci_init(struct usb_hcd *hcd)
 
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100
-		+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		+ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 
 	hcd->has_tt = 1;
diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c
index 9ce1b0bc186d..b5a0bf649c95 100644
--- a/drivers/usb/host/ehci-msm.c
+++ b/drivers/usb/host/ehci-msm.c
@@ -41,7 +41,7 @@ static int ehci_msm_reset(struct usb_hcd *hcd)
 
 	ehci->caps = USB_CAPLENGTH;
 	ehci->regs = USB_CAPLENGTH +
-		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
 
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 25c8c10bb689..0c058be35a38 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -208,7 +208,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
 	/* EHCI registers start at offset 0x100 */
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100 +
-	    HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 
 	/* set up the PORTSCx register */
 	ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]);
diff --git a/drivers/usb/host/ehci-octeon.c b/drivers/usb/host/ehci-octeon.c
index a31a031178a8..ff55757ba7d8 100644
--- a/drivers/usb/host/ehci-octeon.c
+++ b/drivers/usb/host/ehci-octeon.c
@@ -151,7 +151,7 @@ static int ehci_octeon_drv_probe(struct platform_device *pdev)
 
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	/* cache this readonly data; minimize chip reads */
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 7e41a95c5ceb..3c482dc99ece 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -188,7 +188,7 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
 	/* we know this is the memory we want, no need to ioremap again */
 	omap_ehci->caps = hcd->regs;
 	omap_ehci->regs = hcd->regs
-			+ HC_LENGTH(readl(&omap_ehci->caps->hc_capbase));
+		+ HC_LENGTH(ehci, readl(&omap_ehci->caps->hc_capbase));
 
 	dbg_hcs_params(omap_ehci, "reset");
 	dbg_hcc_params(omap_ehci, "reset");
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 281e094e1c18..395bdb0248d5 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -251,7 +251,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100 +
-		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
 	hcd->has_tt = 1;
 	ehci->sbrn = 0x20;
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index d5eaea7caf89..660b80a75cac 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -70,7 +70,7 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
 
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-		HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-pmcmsp.c b/drivers/usb/host/ehci-pmcmsp.c
index a2168642175b..cd69099cda19 100644
--- a/drivers/usb/host/ehci-pmcmsp.c
+++ b/drivers/usb/host/ehci-pmcmsp.c
@@ -83,7 +83,7 @@ static int ehci_msp_setup(struct usb_hcd *hcd)
 
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-			HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
 
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index 1f09f253697e..8552db6c29c9 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -179,7 +179,7 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op)
 
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-			HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 
 	/* cache this readonly data; minimize chip reads */
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
diff --git a/drivers/usb/host/ehci-ps3.c b/drivers/usb/host/ehci-ps3.c
index 1dee33b9139e..64626a777d61 100644
--- a/drivers/usb/host/ehci-ps3.c
+++ b/drivers/usb/host/ehci-ps3.c
@@ -29,7 +29,7 @@ static int ps3_ehci_hc_reset(struct usb_hcd *hcd)
 	ehci->big_endian_mmio = 1;
 
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci,
+	ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
 		&ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 0c18f280bf4c..321a03301ad2 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -126,7 +126,8 @@ static int s5p_ehci_probe(struct platform_device *pdev)
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase));
+	ehci->regs = hcd->regs +
+		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-sh.c b/drivers/usb/host/ehci-sh.c
index 595f70f42b52..86a95bb80a61 100644
--- a/drivers/usb/host/ehci-sh.c
+++ b/drivers/usb/host/ehci-sh.c
@@ -23,7 +23,7 @@ static int ehci_sh_reset(struct usb_hcd *hcd)
 	int ret;
 
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci,
+	ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
 		&ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c
index 75c00873443d..dbf1e4ef3c17 100644
--- a/drivers/usb/host/ehci-spear.c
+++ b/drivers/usb/host/ehci-spear.c
@@ -38,7 +38,7 @@ static int ehci_spear_setup(struct usb_hcd *hcd)
 
 	/* registers start at offset 0x0 */
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(ehci_readl(ehci,
+	ehci->regs = hcd->regs + HC_LENGTH(ehci, ehci_readl(ehci,
 				&ehci->caps->hc_capbase));
 	/* cache this readonly data; minimize chip reads */
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 7359bcbe4176..02b2bfd49a10 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -400,7 +400,7 @@ static int tegra_ehci_setup(struct usb_hcd *hcd)
 	/* EHCI registers start at offset 0x100 */
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100 +
-		HC_LENGTH(readl(&ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-vt8500.c b/drivers/usb/host/ehci-vt8500.c
index 20168062035a..47d749631bc7 100644
--- a/drivers/usb/host/ehci-vt8500.c
+++ b/drivers/usb/host/ehci-vt8500.c
@@ -121,7 +121,8 @@ static int vt8500_ehci_drv_probe(struct platform_device *pdev)
 
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = hcd->regs;
-	ehci->regs = hcd->regs + HC_LENGTH(readl(&ehci->caps->hc_capbase));
+	ehci->regs = hcd->regs +
+		HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
 
 	dbg_hcs_params(ehci, "reset");
 	dbg_hcc_params(ehci, "reset");
diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c
index 6bc35809a5c6..52a027aaa370 100644
--- a/drivers/usb/host/ehci-w90x900.c
+++ b/drivers/usb/host/ehci-w90x900.c
@@ -57,7 +57,7 @@ static int __devinit usb_w90x900_probe(const struct hc_driver *driver,
 	ehci = hcd_to_ehci(hcd);
 	ehci->caps = hcd->regs;
 	ehci->regs = hcd->regs +
-		 HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 
 	/* enable PHY 0,1,the regs only apply to w90p910
 	*  0xA4,0xA8 were offsets of PHY0 and PHY1 controller of
diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
index effc58d7af8b..a64d6d66d760 100644
--- a/drivers/usb/host/ehci-xilinx-of.c
+++ b/drivers/usb/host/ehci-xilinx-of.c
@@ -220,7 +220,7 @@ static int __devinit ehci_hcd_xilinx_of_probe(struct platform_device *op)
 	 */
 	ehci->caps = hcd->regs + 0x100;
 	ehci->regs = hcd->regs + 0x100 +
-			HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+		HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase));
 
 	/* cache this readonly data; minimize chip reads */
 	ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index e9ba8e252489..d0792f591590 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -128,6 +128,7 @@ struct ehci_hcd {			/* one per controller */
 	unsigned		has_fsl_port_bug:1; /* FreeScale */
 	unsigned		big_endian_mmio:1;
 	unsigned		big_endian_desc:1;
+	unsigned		big_endian_capbase:1;
 	unsigned		has_amcc_usb23:1;
 	unsigned		need_io_watchdog:1;
 	unsigned		broken_periodic:1;
@@ -605,12 +606,18 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
  * This attempts to support either format at compile time without a
  * runtime penalty, or both formats with the additional overhead
  * of checking a flag bit.
+ *
+ * ehci_big_endian_capbase is a special quirk for controllers that
+ * implement the HC capability registers as separate registers and not
+ * as fields of a 32-bit register.
  */
 
 #ifdef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
 #define ehci_big_endian_mmio(e)		((e)->big_endian_mmio)
+#define ehci_big_endian_capbase(e)	((e)->big_endian_capbase)
 #else
 #define ehci_big_endian_mmio(e)		0
+#define ehci_big_endian_capbase(e)	0
 #endif
 
 /*
diff --git a/include/linux/usb/ehci_def.h b/include/linux/usb/ehci_def.h
index 78799432008e..7cc95ee3606b 100644
--- a/include/linux/usb/ehci_def.h
+++ b/include/linux/usb/ehci_def.h
@@ -25,10 +25,15 @@
 struct ehci_caps {
 	/* these fields are specified as 8 and 16 bit registers,
 	 * but some hosts can't perform 8 or 16 bit PCI accesses.
+	 * some hosts treat caplength and hciversion as parts of a 32-bit
+	 * register, others treat them as two separate registers, this
+	 * affects the memory map for big endian controllers.
 	 */
 	u32		hc_capbase;
-#define HC_LENGTH(p)		(((p)>>00)&0x00ff)	/* bits 7:0 */
-#define HC_VERSION(p)		(((p)>>16)&0xffff)	/* bits 31:16 */
+#define HC_LENGTH(ehci, p)	(0x00ff&((p) >> /* bits 7:0 / offset 00h */ \
+				(ehci_big_endian_capbase(ehci) ? 24 : 0)))
+#define HC_VERSION(ehci, p)	(0xffff&((p) >> /* bits 31:16 / offset 02h */ \
+				(ehci_big_endian_capbase(ehci) ? 0 : 16)))
 	u32		hcs_params;     /* HCSPARAMS - offset 0x4 */
 #define HCS_DEBUG_PORT(p)	(((p)>>20)&0xf)	/* bits 23:20, debug port? */
 #define HCS_INDICATOR(p)	((p)&(1 << 16))	/* true: has port indicators */
-- 
cgit v1.2.3


From 3df004532582d0cc721da0df28311bcedd639724 Mon Sep 17 00:00:00 2001
From: Anatolij Gustschin <agust@denx.de>
Date: Thu, 5 May 2011 12:11:21 +0200
Subject: usb: fix building musb drivers

Commit 3dacdf11 "usb: factor out state_string() on otg drivers"
broke building musb drivers since there is already another
otg_state_string() function in musb drivers, but with different
prototype. Fix musb drivers to use common otg_state_string(), too.

Also provide a nop for otg_state_string() if CONFIG_USB_OTG_UTILS
is not defined.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/musb/am35x.c        | 11 ++++---
 drivers/usb/musb/blackfin.c     |  7 +++--
 drivers/usb/musb/da8xx.c        | 11 ++++---
 drivers/usb/musb/davinci.c      |  5 ++--
 drivers/usb/musb/musb_core.c    | 65 ++++++++++++++++-------------------------
 drivers/usb/musb/musb_debug.h   |  2 --
 drivers/usb/musb/musb_gadget.c  |  9 +++---
 drivers/usb/musb/musb_host.c    |  2 +-
 drivers/usb/musb/musb_virthub.c |  5 ++--
 drivers/usb/musb/omap2430.c     |  7 +++--
 drivers/usb/musb/tusb6010.c     | 16 +++++-----
 include/linux/usb/otg.h         |  7 ++++-
 12 files changed, 74 insertions(+), 73 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/musb/am35x.c b/drivers/usb/musb/am35x.c
index d5a3da37c90c..9e6209f87d3b 100644
--- a/drivers/usb/musb/am35x.c
+++ b/drivers/usb/musb/am35x.c
@@ -151,7 +151,8 @@ static void otg_timer(unsigned long _musb)
 	 * status change events (from the transceiver) otherwise.
 	 */
 	devctl = musb_readb(mregs, MUSB_DEVCTL);
-	DBG(7, "Poll devctl %02x (%s)\n", devctl, otg_state_string(musb));
+	DBG(7, "Poll devctl %02x (%s)\n", devctl,
+		otg_state_string(musb->xceiv->state));
 
 	spin_lock_irqsave(&musb->lock, flags);
 	switch (musb->xceiv->state) {
@@ -202,7 +203,8 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout)
 	/* Never idle if active, or when VBUS timeout is not set as host */
 	if (musb->is_active || (musb->a_wait_bcon == 0 &&
 				musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
-		DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
+		DBG(4, "%s active, deleting timer\n",
+			otg_state_string(musb->xceiv->state));
 		del_timer(&otg_workaround);
 		last_timer = jiffies;
 		return;
@@ -215,7 +217,8 @@ static void am35x_musb_try_idle(struct musb *musb, unsigned long timeout)
 	last_timer = timeout;
 
 	DBG(4, "%s inactive, starting idle timer for %u ms\n",
-	    otg_state_string(musb), jiffies_to_msecs(timeout - jiffies));
+		otg_state_string(musb->xceiv->state),
+		jiffies_to_msecs(timeout - jiffies));
 	mod_timer(&otg_workaround, timeout);
 }
 
@@ -304,7 +307,7 @@ static irqreturn_t am35x_musb_interrupt(int irq, void *hci)
 		/* NOTE: this must complete power-on within 100 ms. */
 		DBG(2, "VBUS %s (%s)%s, devctl %02x\n",
 				drvvbus ? "on" : "off",
-				otg_state_string(musb),
+				otg_state_string(musb->xceiv->state),
 				err ? " ERROR" : "",
 				devctl);
 		ret = IRQ_HANDLED;
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index 8e2a1ff8a35a..e141d89656e1 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -279,12 +279,13 @@ static void musb_conn_timer_handler(unsigned long _musb)
 		}
 		break;
 	default:
-		DBG(1, "%s state not handled\n", otg_state_string(musb));
+		DBG(1, "%s state not handled\n",
+			otg_state_string(musb->xceiv->state));
 		break;
 	}
 	spin_unlock_irqrestore(&musb->lock, flags);
 
-	DBG(4, "state is %s\n", otg_state_string(musb));
+	DBG(4, "state is %s\n", otg_state_string(musb->xceiv->state));
 }
 
 static void bfin_musb_enable(struct musb *musb)
@@ -308,7 +309,7 @@ static void bfin_musb_set_vbus(struct musb *musb, int is_on)
 
 	DBG(1, "VBUS %s, devctl %02x "
 		/* otg %3x conf %08x prcm %08x */ "\n",
-		otg_state_string(musb),
+		otg_state_string(musb->xceiv->state),
 		musb_readb(musb->mregs, MUSB_DEVCTL));
 }
 
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
index 69a0da3c8f09..0d8984993a38 100644
--- a/drivers/usb/musb/da8xx.c
+++ b/drivers/usb/musb/da8xx.c
@@ -199,7 +199,8 @@ static void otg_timer(unsigned long _musb)
 	 * status change events (from the transceiver) otherwise.
 	 */
 	devctl = musb_readb(mregs, MUSB_DEVCTL);
-	DBG(7, "Poll devctl %02x (%s)\n", devctl, otg_state_string(musb));
+	DBG(7, "Poll devctl %02x (%s)\n", devctl,
+		otg_state_string(musb->xceiv->state));
 
 	spin_lock_irqsave(&musb->lock, flags);
 	switch (musb->xceiv->state) {
@@ -273,7 +274,8 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout)
 	/* Never idle if active, or when VBUS timeout is not set as host */
 	if (musb->is_active || (musb->a_wait_bcon == 0 &&
 				musb->xceiv->state == OTG_STATE_A_WAIT_BCON)) {
-		DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
+		DBG(4, "%s active, deleting timer\n",
+			otg_state_string(musb->xceiv->state));
 		del_timer(&otg_workaround);
 		last_timer = jiffies;
 		return;
@@ -286,7 +288,8 @@ static void da8xx_musb_try_idle(struct musb *musb, unsigned long timeout)
 	last_timer = timeout;
 
 	DBG(4, "%s inactive, starting idle timer for %u ms\n",
-	    otg_state_string(musb), jiffies_to_msecs(timeout - jiffies));
+		otg_state_string(musb->xceiv->state),
+		jiffies_to_msecs(timeout - jiffies));
 	mod_timer(&otg_workaround, timeout);
 }
 
@@ -365,7 +368,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
 
 		DBG(2, "VBUS %s (%s)%s, devctl %02x\n",
 				drvvbus ? "on" : "off",
-				otg_state_string(musb),
+				otg_state_string(musb->xceiv->state),
 				err ? " ERROR" : "",
 				devctl);
 		ret = IRQ_HANDLED;
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index e6de097fb7e8..3661b81a9571 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -220,7 +220,8 @@ static void otg_timer(unsigned long _musb)
 	* status change events (from the transceiver) otherwise.
 	 */
 	devctl = musb_readb(mregs, MUSB_DEVCTL);
-	DBG(7, "poll devctl %02x (%s)\n", devctl, otg_state_string(musb));
+	DBG(7, "poll devctl %02x (%s)\n", devctl,
+		otg_state_string(musb->xceiv->state));
 
 	spin_lock_irqsave(&musb->lock, flags);
 	switch (musb->xceiv->state) {
@@ -356,7 +357,7 @@ static irqreturn_t davinci_musb_interrupt(int irq, void *__hci)
 		davinci_musb_source_power(musb, drvvbus, 0);
 		DBG(2, "VBUS %s (%s)%s, devctl %02x\n",
 				drvvbus ? "on" : "off",
-				otg_state_string(musb),
+				otg_state_string(musb->xceiv->state),
 				err ? " ERROR" : "",
 				devctl);
 		retval = IRQ_HANDLED;
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index f10ff00ca09e..9a280872c2b4 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -333,26 +333,6 @@ void musb_load_testpacket(struct musb *musb)
 
 /*-------------------------------------------------------------------------*/
 
-const char *otg_state_string(struct musb *musb)
-{
-	switch (musb->xceiv->state) {
-	case OTG_STATE_A_IDLE:		return "a_idle";
-	case OTG_STATE_A_WAIT_VRISE:	return "a_wait_vrise";
-	case OTG_STATE_A_WAIT_BCON:	return "a_wait_bcon";
-	case OTG_STATE_A_HOST:		return "a_host";
-	case OTG_STATE_A_SUSPEND:	return "a_suspend";
-	case OTG_STATE_A_PERIPHERAL:	return "a_peripheral";
-	case OTG_STATE_A_WAIT_VFALL:	return "a_wait_vfall";
-	case OTG_STATE_A_VBUS_ERR:	return "a_vbus_err";
-	case OTG_STATE_B_IDLE:		return "b_idle";
-	case OTG_STATE_B_SRP_INIT:	return "b_srp_init";
-	case OTG_STATE_B_PERIPHERAL:	return "b_peripheral";
-	case OTG_STATE_B_WAIT_ACON:	return "b_wait_acon";
-	case OTG_STATE_B_HOST:		return "b_host";
-	default:			return "UNDEFINED";
-	}
-}
-
 #ifdef	CONFIG_USB_MUSB_OTG
 
 /*
@@ -373,12 +353,14 @@ void musb_otg_timer_func(unsigned long data)
 		break;
 	case OTG_STATE_A_SUSPEND:
 	case OTG_STATE_A_WAIT_BCON:
-		DBG(1, "HNP: %s timeout\n", otg_state_string(musb));
+		DBG(1, "HNP: %s timeout\n",
+			otg_state_string(musb->xceiv->state));
 		musb_platform_set_vbus(musb, 0);
 		musb->xceiv->state = OTG_STATE_A_WAIT_VFALL;
 		break;
 	default:
-		DBG(1, "HNP: Unhandled mode %s\n", otg_state_string(musb));
+		DBG(1, "HNP: Unhandled mode %s\n",
+			otg_state_string(musb->xceiv->state));
 	}
 	musb->ignore_disconnect = 0;
 	spin_unlock_irqrestore(&musb->lock, flags);
@@ -393,12 +375,13 @@ void musb_hnp_stop(struct musb *musb)
 	void __iomem	*mbase = musb->mregs;
 	u8	reg;
 
-	DBG(1, "HNP: stop from %s\n", otg_state_string(musb));
+	DBG(1, "HNP: stop from %s\n", otg_state_string(musb->xceiv->state));
 
 	switch (musb->xceiv->state) {
 	case OTG_STATE_A_PERIPHERAL:
 		musb_g_disconnect(musb);
-		DBG(1, "HNP: back to %s\n", otg_state_string(musb));
+		DBG(1, "HNP: back to %s\n",
+			otg_state_string(musb->xceiv->state));
 		break;
 	case OTG_STATE_B_HOST:
 		DBG(1, "HNP: Disabling HR\n");
@@ -412,7 +395,7 @@ void musb_hnp_stop(struct musb *musb)
 		break;
 	default:
 		DBG(1, "HNP: Stopping in unknown state %s\n",
-			otg_state_string(musb));
+			otg_state_string(musb->xceiv->state));
 	}
 
 	/*
@@ -451,7 +434,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 	 */
 	if (int_usb & MUSB_INTR_RESUME) {
 		handled = IRQ_HANDLED;
-		DBG(3, "RESUME (%s)\n", otg_state_string(musb));
+		DBG(3, "RESUME (%s)\n", otg_state_string(musb->xceiv->state));
 
 		if (devctl & MUSB_DEVCTL_HM) {
 #ifdef CONFIG_USB_MUSB_HDRC_HCD
@@ -492,7 +475,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 			default:
 				WARNING("bogus %s RESUME (%s)\n",
 					"host",
-					otg_state_string(musb));
+					otg_state_string(musb->xceiv->state));
 			}
 #endif
 		} else {
@@ -526,7 +509,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 			default:
 				WARNING("bogus %s RESUME (%s)\n",
 					"peripheral",
-					otg_state_string(musb));
+					otg_state_string(musb->xceiv->state));
 			}
 		}
 	}
@@ -542,7 +525,8 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 			return IRQ_HANDLED;
 		}
 
-		DBG(1, "SESSION_REQUEST (%s)\n", otg_state_string(musb));
+		DBG(1, "SESSION_REQUEST (%s)\n",
+			otg_state_string(musb->xceiv->state));
 
 		/* IRQ arrives from ID pin sense or (later, if VBUS power
 		 * is removed) SRP.  responses are time critical:
@@ -607,7 +591,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 		}
 
 		DBG(1, "VBUS_ERROR in %s (%02x, %s), retry #%d, port1 %08x\n",
-				otg_state_string(musb),
+				otg_state_string(musb->xceiv->state),
 				devctl,
 				({ char *s;
 				switch (devctl & MUSB_DEVCTL_VBUS) {
@@ -633,7 +617,7 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
 #endif
 	if (int_usb & MUSB_INTR_SUSPEND) {
 		DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
-				otg_state_string(musb), devctl, power);
+			otg_state_string(musb->xceiv->state), devctl, power);
 		handled = IRQ_HANDLED;
 
 		switch (musb->xceiv->state) {
@@ -758,13 +742,13 @@ b_host:
 			usb_hcd_resume_root_hub(hcd);
 
 		DBG(1, "CONNECT (%s) devctl %02x\n",
-				otg_state_string(musb), devctl);
+				otg_state_string(musb->xceiv->state), devctl);
 	}
 #endif	/* CONFIG_USB_MUSB_HDRC_HCD */
 
 	if ((int_usb & MUSB_INTR_DISCONNECT) && !musb->ignore_disconnect) {
 		DBG(1, "DISCONNECT (%s) as %s, devctl %02x\n",
-				otg_state_string(musb),
+				otg_state_string(musb->xceiv->state),
 				MUSB_MODE(musb), devctl);
 		handled = IRQ_HANDLED;
 
@@ -807,7 +791,7 @@ b_host:
 #endif	/* GADGET */
 		default:
 			WARNING("unhandled DISCONNECT transition (%s)\n",
-				otg_state_string(musb));
+				otg_state_string(musb->xceiv->state));
 			break;
 		}
 	}
@@ -832,7 +816,8 @@ b_host:
 				musb_writeb(musb->mregs, MUSB_DEVCTL, 0);
 			}
 		} else if (is_peripheral_capable()) {
-			DBG(1, "BUS RESET as %s\n", otg_state_string(musb));
+			DBG(1, "BUS RESET as %s\n",
+				otg_state_string(musb->xceiv->state));
 			switch (musb->xceiv->state) {
 #ifdef CONFIG_USB_OTG
 			case OTG_STATE_A_SUSPEND:
@@ -846,8 +831,8 @@ b_host:
 			case OTG_STATE_A_WAIT_BCON:	/* OPT TD.4.7-900ms */
 				/* never use invalid T(a_wait_bcon) */
 				DBG(1, "HNP: in %s, %d msec timeout\n",
-						otg_state_string(musb),
-						TA_WAIT_BCON(musb));
+					otg_state_string(musb->xceiv->state),
+					TA_WAIT_BCON(musb));
 				mod_timer(&musb->otg_timer, jiffies
 					+ msecs_to_jiffies(TA_WAIT_BCON(musb)));
 				break;
@@ -858,7 +843,7 @@ b_host:
 				break;
 			case OTG_STATE_B_WAIT_ACON:
 				DBG(1, "HNP: RESET (%s), to b_peripheral\n",
-					otg_state_string(musb));
+					otg_state_string(musb->xceiv->state));
 				musb->xceiv->state = OTG_STATE_B_PERIPHERAL;
 				musb_g_reset(musb);
 				break;
@@ -871,7 +856,7 @@ b_host:
 				break;
 			default:
 				DBG(1, "Unhandled BUS RESET as %s\n",
-					otg_state_string(musb));
+					otg_state_string(musb->xceiv->state));
 			}
 		}
 	}
@@ -1713,7 +1698,7 @@ musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf)
 	int ret = -EINVAL;
 
 	spin_lock_irqsave(&musb->lock, flags);
-	ret = sprintf(buf, "%s\n", otg_state_string(musb));
+	ret = sprintf(buf, "%s\n", otg_state_string(musb->xceiv->state));
 	spin_unlock_irqrestore(&musb->lock, flags);
 
 	return ret;
diff --git a/drivers/usb/musb/musb_debug.h b/drivers/usb/musb/musb_debug.h
index 94f6973cf8f7..f958a49a0124 100644
--- a/drivers/usb/musb/musb_debug.h
+++ b/drivers/usb/musb/musb_debug.h
@@ -54,8 +54,6 @@ static inline int _dbg_level(unsigned l)
 	return musb_debug >= l;
 }
 
-extern const char *otg_state_string(struct musb *);
-
 #ifdef CONFIG_DEBUG_FS
 extern int musb_init_debugfs(struct musb *musb);
 extern void musb_exit_debugfs(struct musb *musb);
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 6dfbf9ffd7a6..3d799195c8b4 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -1556,7 +1556,8 @@ static int musb_gadget_wakeup(struct usb_gadget *gadget)
 		status = 0;
 		goto done;
 	default:
-		DBG(2, "Unhandled wake: %s\n", otg_state_string(musb));
+		DBG(2, "Unhandled wake: %s\n",
+			otg_state_string(musb->xceiv->state));
 		goto done;
 	}
 
@@ -2039,7 +2040,7 @@ void musb_g_resume(struct musb *musb)
 		break;
 	default:
 		WARNING("unhandled RESUME transition (%s)\n",
-				otg_state_string(musb));
+				otg_state_string(musb->xceiv->state));
 	}
 }
 
@@ -2069,7 +2070,7 @@ void musb_g_suspend(struct musb *musb)
 		 * A_PERIPHERAL may need care too
 		 */
 		WARNING("unhandled SUSPEND transition (%s)\n",
-				otg_state_string(musb));
+				otg_state_string(musb->xceiv->state));
 	}
 }
 
@@ -2104,7 +2105,7 @@ void musb_g_disconnect(struct musb *musb)
 	default:
 #ifdef	CONFIG_USB_MUSB_OTG
 		DBG(2, "Unhandled disconnect %s, setting a_idle\n",
-			otg_state_string(musb));
+			otg_state_string(musb->xceiv->state));
 		musb->xceiv->state = OTG_STATE_A_IDLE;
 		MUSB_HST_MODE(musb);
 		break;
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 5eef4a8847db..07b106c7de82 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -2304,7 +2304,7 @@ static int musb_bus_suspend(struct usb_hcd *hcd)
 
 	if (musb->is_active) {
 		WARNING("trying to suspend as %s while active\n",
-				otg_state_string(musb));
+				otg_state_string(musb->xceiv->state));
 		return -EBUSY;
 	} else
 		return 0;
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c
index 489104a5ae14..bb1247d5fd04 100644
--- a/drivers/usb/musb/musb_virthub.c
+++ b/drivers/usb/musb/musb_virthub.c
@@ -98,7 +98,7 @@ static void musb_port_suspend(struct musb *musb, bool do_suspend)
 #endif
 		default:
 			DBG(1, "bogus rh suspend? %s\n",
-				otg_state_string(musb));
+				otg_state_string(musb->xceiv->state));
 		}
 	} else if (power & MUSB_POWER_SUSPENDM) {
 		power &= ~MUSB_POWER_SUSPENDM;
@@ -208,7 +208,8 @@ void musb_root_disconnect(struct musb *musb)
 		musb->xceiv->state = OTG_STATE_B_IDLE;
 		break;
 	default:
-		DBG(1, "host disconnect (%s)\n", otg_state_string(musb));
+		DBG(1, "host disconnect (%s)\n",
+			otg_state_string(musb->xceiv->state));
 	}
 }
 
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index 57a27fa954b4..d51b15adc0b0 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -114,7 +114,8 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
 	/* Never idle if active, or when VBUS timeout is not set as host */
 	if (musb->is_active || ((musb->a_wait_bcon == 0)
 			&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
-		DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
+		DBG(4, "%s active, deleting timer\n",
+			otg_state_string(musb->xceiv->state));
 		del_timer(&musb_idle_timer);
 		last_timer = jiffies;
 		return;
@@ -131,7 +132,7 @@ static void omap2430_musb_try_idle(struct musb *musb, unsigned long timeout)
 	last_timer = timeout;
 
 	DBG(4, "%s inactive, for idle timer for %lu ms\n",
-		otg_state_string(musb),
+		otg_state_string(musb->xceiv->state),
 		(unsigned long)jiffies_to_msecs(timeout - jiffies));
 	mod_timer(&musb_idle_timer, timeout);
 }
@@ -195,7 +196,7 @@ static void omap2430_musb_set_vbus(struct musb *musb, int is_on)
 
 	DBG(1, "VBUS %s, devctl %02x "
 		/* otg %3x conf %08x prcm %08x */ "\n",
-		otg_state_string(musb),
+		otg_state_string(musb->xceiv->state),
 		musb_readb(musb->mregs, MUSB_DEVCTL));
 }
 
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index c47aac4a1f98..221feaaded72 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -422,7 +422,7 @@ static void musb_do_idle(unsigned long _musb)
 			&& (musb->idle_timeout == 0
 				|| time_after(jiffies, musb->idle_timeout))) {
 			DBG(4, "Nothing connected %s, turning off VBUS\n",
-					otg_state_string(musb));
+					otg_state_string(musb->xceiv->state));
 		}
 		/* FALLTHROUGH */
 	case OTG_STATE_A_IDLE:
@@ -481,7 +481,8 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
 	/* Never idle if active, or when VBUS timeout is not set as host */
 	if (musb->is_active || ((musb->a_wait_bcon == 0)
 			&& (musb->xceiv->state == OTG_STATE_A_WAIT_BCON))) {
-		DBG(4, "%s active, deleting timer\n", otg_state_string(musb));
+		DBG(4, "%s active, deleting timer\n",
+			otg_state_string(musb->xceiv->state));
 		del_timer(&musb_idle_timer);
 		last_timer = jiffies;
 		return;
@@ -498,7 +499,7 @@ static void tusb_musb_try_idle(struct musb *musb, unsigned long timeout)
 	last_timer = timeout;
 
 	DBG(4, "%s inactive, for idle timer for %lu ms\n",
-		otg_state_string(musb),
+		otg_state_string(musb->xceiv->state),
 		(unsigned long)jiffies_to_msecs(timeout - jiffies));
 	mod_timer(&musb_idle_timer, timeout);
 }
@@ -573,7 +574,7 @@ static void tusb_musb_set_vbus(struct musb *musb, int is_on)
 	musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
 
 	DBG(1, "VBUS %s, devctl %02x otg %3x conf %08x prcm %08x\n",
-		otg_state_string(musb),
+		otg_state_string(musb->xceiv->state),
 		musb_readb(musb->mregs, MUSB_DEVCTL),
 		musb_readl(tbase, TUSB_DEV_OTG_STAT),
 		conf, prcm);
@@ -702,13 +703,13 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
 				musb->is_active = 0;
 			}
 			DBG(2, "vbus change, %s, otg %03x\n",
-				otg_state_string(musb), otg_stat);
+				otg_state_string(musb->xceiv->state), otg_stat);
 			idle_timeout = jiffies + (1 * HZ);
 			schedule_work(&musb->irq_work);
 
 		} else /* A-dev state machine */ {
 			DBG(2, "vbus change, %s, otg %03x\n",
-				otg_state_string(musb), otg_stat);
+				otg_state_string(musb->xceiv->state), otg_stat);
 
 			switch (musb->xceiv->state) {
 			case OTG_STATE_A_IDLE:
@@ -756,7 +757,8 @@ tusb_otg_ints(struct musb *musb, u32 int_src, void __iomem *tbase)
 	if (int_src & TUSB_INT_SRC_OTG_TIMEOUT) {
 		u8	devctl;
 
-		DBG(4, "%s timer, %03x\n", otg_state_string(musb), otg_stat);
+		DBG(4, "%s timer, %03x\n",
+			otg_state_string(musb->xceiv->state), otg_stat);
 
 		switch (musb->xceiv->state) {
 		case OTG_STATE_A_WAIT_VRISE:
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index bc84858b3a4d..d87f44f5b04e 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -168,6 +168,7 @@ otg_shutdown(struct otg_transceiver *otg)
 #ifdef CONFIG_USB_OTG_UTILS
 extern struct otg_transceiver *otg_get_transceiver(void);
 extern void otg_put_transceiver(struct otg_transceiver *);
+extern const char *otg_state_string(enum usb_otg_state state);
 #else
 static inline struct otg_transceiver *otg_get_transceiver(void)
 {
@@ -177,6 +178,11 @@ static inline struct otg_transceiver *otg_get_transceiver(void)
 static inline void otg_put_transceiver(struct otg_transceiver *x)
 {
 }
+
+static inline const char *otg_state_string(enum usb_otg_state state)
+{
+	return NULL;
+}
 #endif
 
 /* Context: can sleep */
@@ -246,6 +252,5 @@ otg_unregister_notifier(struct otg_transceiver *otg, struct notifier_block *nb)
 
 /* for OTG controller drivers (and maybe other stuff) */
 extern int usb_bus_start_enum(struct usb_bus *bus, unsigned port_num);
-extern const char *otg_state_string(enum usb_otg_state state);
 
 #endif /* __LINUX_USB_OTG_H */
-- 
cgit v1.2.3


From 0f73cac8e41723d600c91a0f5b481dc3202f4f82 Mon Sep 17 00:00:00 2001
From: Anji jonnala <anjir@codeaurora.org>
Date: Wed, 4 May 2011 10:19:46 +0530
Subject: USB: OTG: msm: vote for dayatona fabric clock

HSUSB core clock is derived from daytona fabric clock and for
HSUSB operational require minimum core clock at 55MHz. Since, HSUSB
cannot tolerate daytona fabric clock change in the middle of HSUSB
operational, vote for maximum Daytona fabric clock
while usb is operational

Signed-off-by: Anji jonnala <anjir@codeaurora.org>
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/otg/msm_otg.c     | 36 +++++++++++++++++++++++++++++++++++-
 include/linux/usb/msm_hsusb.h |  7 +++++--
 2 files changed, 40 insertions(+), 3 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index f58b7dab75aa..7792fef0be5e 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -324,6 +324,9 @@ static int msm_otg_suspend(struct msm_otg *motg)
 	if (motg->core_clk)
 		clk_disable(motg->core_clk);
 
+	if (!IS_ERR(motg->pclk_src))
+		clk_disable(motg->pclk_src);
+
 	if (device_may_wakeup(otg->dev))
 		enable_irq_wake(motg->irq);
 	if (bus)
@@ -347,6 +350,9 @@ static int msm_otg_resume(struct msm_otg *motg)
 	if (!atomic_read(&motg->in_lpm))
 		return 0;
 
+	if (!IS_ERR(motg->pclk_src))
+		clk_enable(motg->pclk_src);
+
 	clk_enable(motg->pclk);
 	clk_enable(motg->clk);
 	if (motg->core_clk)
@@ -862,12 +868,31 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 		ret = PTR_ERR(motg->clk);
 		goto put_phy_reset_clk;
 	}
+	clk_set_rate(motg->clk, 60000000);
+
+	/*
+	 * If USB Core is running its protocol engine based on CORE CLK,
+	 * CORE CLK  must be running at >55Mhz for correct HSUSB
+	 * operation and USB core cannot tolerate frequency changes on
+	 * CORE CLK. For such USB cores, vote for maximum clk frequency
+	 * on pclk source
+	 */
+	 if (motg->pdata->pclk_src_name) {
+		motg->pclk_src = clk_get(&pdev->dev,
+			motg->pdata->pclk_src_name);
+		if (IS_ERR(motg->pclk_src))
+			goto put_clk;
+		clk_set_rate(motg->pclk_src, INT_MAX);
+		clk_enable(motg->pclk_src);
+	} else
+		motg->pclk_src = ERR_PTR(-ENOENT);
+
 
 	motg->pclk = clk_get(&pdev->dev, "usb_hs_pclk");
 	if (IS_ERR(motg->pclk)) {
 		dev_err(&pdev->dev, "failed to get usb_hs_pclk\n");
 		ret = PTR_ERR(motg->pclk);
-		goto put_clk;
+		goto put_pclk_src;
 	}
 
 	/*
@@ -955,6 +980,11 @@ put_core_clk:
 	if (motg->core_clk)
 		clk_put(motg->core_clk);
 	clk_put(motg->pclk);
+put_pclk_src:
+	if (!IS_ERR(motg->pclk_src)) {
+		clk_disable(motg->pclk_src);
+		clk_put(motg->pclk_src);
+	}
 put_clk:
 	clk_put(motg->clk);
 put_phy_reset_clk:
@@ -1004,6 +1034,10 @@ static int __devexit msm_otg_remove(struct platform_device *pdev)
 	clk_disable(motg->clk);
 	if (motg->core_clk)
 		clk_disable(motg->core_clk);
+	if (!IS_ERR(motg->pclk_src)) {
+		clk_disable(motg->pclk_src);
+		clk_put(motg->pclk_src);
+	}
 
 	iounmap(motg->regs);
 	pm_runtime_set_suspended(&pdev->dev);
diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h
index 3657403eac18..31ef1853f93c 100644
--- a/include/linux/usb/msm_hsusb.h
+++ b/include/linux/usb/msm_hsusb.h
@@ -64,7 +64,8 @@ enum otg_control_type {
  * @otg_control: OTG switch controlled by user/Id pin
  * @default_mode: Default operational mode. Applicable only if
  *              OTG switch is controller by user.
- *
+ * @pclk_src_name: pclk is derived from ebi1_usb_clk in case of 7x27 and 8k
+ *              dfab_usb_hs_clk in case of 8660 and 8960.
  */
 struct msm_otg_platform_data {
 	int *phy_init_seq;
@@ -74,6 +75,7 @@ struct msm_otg_platform_data {
 	enum otg_control_type otg_control;
 	enum usb_mode_type default_mode;
 	void (*setup_gpio)(enum usb_otg_state state);
+	char *pclk_src_name;
 };
 
 /**
@@ -83,6 +85,7 @@ struct msm_otg_platform_data {
  * @irq: IRQ number assigned for HSUSB controller.
  * @clk: clock struct of usb_hs_clk.
  * @pclk: clock struct of usb_hs_pclk.
+ * @pclk_src: pclk source for voting.
  * @phy_reset_clk: clock struct of usb_phy_clk.
  * @core_clk: clock struct of usb_hs_core_clk.
  * @regs: ioremapped register base address.
@@ -90,7 +93,6 @@ struct msm_otg_platform_data {
  * @sm_work: OTG state machine work.
  * @in_lpm: indicates low power mode (LPM) state.
  * @async_int: Async interrupt arrived.
- *
  */
 struct msm_otg {
 	struct otg_transceiver otg;
@@ -98,6 +100,7 @@ struct msm_otg {
 	int irq;
 	struct clk *clk;
 	struct clk *pclk;
+	struct clk *pclk_src;
 	struct clk *phy_reset_clk;
 	struct clk *core_clk;
 	void __iomem *regs;
-- 
cgit v1.2.3


From d860852e087eed7eadbea64f1a8db9a231c5e9b3 Mon Sep 17 00:00:00 2001
From: Pavankumar Kondeti <pkondeti@codeaurora.org>
Date: Wed, 4 May 2011 10:19:47 +0530
Subject: USB: OTG: msm: Implement charger detection

Implement good battery algorithm defined in the battery charging V1.2 spec
for detecting different charging ports.  USB hardware is put into low power
mode when connected to a dedicated charging port.  vbus_draw and set_power
methods are implemented for determining the allowed current from Host in
different states (un-configured/suspend/configured).

The charger block is implemented using vendor specific registers and the
PHY used in MSM8960(28nm PHY) different from older targets like MSM8x60
and MSM7x30(45nm PHY).  The PHY vendor and product id registers are not
implemented in the above chipsets.  Hence PHY type is passed via platform
data.

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/ci13xxx_udc.c |  10 ++
 drivers/usb/otg/msm_otg.c        | 380 ++++++++++++++++++++++++++++++++++++++-
 include/linux/usb/msm_hsusb.h    |  72 +++++++-
 3 files changed, 457 insertions(+), 5 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
index 68123ee01392..baaf87ed7685 100644
--- a/drivers/usb/gadget/ci13xxx_udc.c
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -2506,6 +2506,15 @@ out:
 	return ret;
 }
 
+static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
+{
+	struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+
+	if (udc->transceiver)
+		return otg_set_power(udc->transceiver, mA);
+	return -ENOTSUPP;
+}
+
 /**
  * Device operations part of the API to the USB controller hardware,
  * which don't involve endpoints (or i/o)
@@ -2514,6 +2523,7 @@ out:
 static const struct usb_gadget_ops usb_gadget_ops = {
 	.vbus_session	= ci13xxx_vbus_session,
 	.wakeup		= ci13xxx_wakeup,
+	.vbus_draw	= ci13xxx_vbus_draw,
 };
 
 /**
diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index 7792fef0be5e..854b7e3413dd 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+/* Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -409,6 +409,33 @@ skip_phy_resume:
 }
 #endif
 
+static void msm_otg_notify_charger(struct msm_otg *motg, unsigned mA)
+{
+	if (motg->cur_power == mA)
+		return;
+
+	/* TODO: Notify PMIC about available current */
+	dev_info(motg->otg.dev, "Avail curr from USB = %u\n", mA);
+	motg->cur_power = mA;
+}
+
+static int msm_otg_set_power(struct otg_transceiver *otg, unsigned mA)
+{
+	struct msm_otg *motg = container_of(otg, struct msm_otg, otg);
+
+	/*
+	 * Gadget driver uses set_power method to notify about the
+	 * available current based on suspend/configured states.
+	 *
+	 * IDEV_CHG can be drawn irrespective of suspend/un-configured
+	 * states when CDP/ACA is connected.
+	 */
+	if (motg->chg_type == USB_SDP_CHARGER)
+		msm_otg_notify_charger(motg, mA);
+
+	return 0;
+}
+
 static void msm_otg_start_host(struct otg_transceiver *otg, int on)
 {
 	struct msm_otg *motg = container_of(otg, struct msm_otg, otg);
@@ -563,6 +590,306 @@ static int msm_otg_set_peripheral(struct otg_transceiver *otg,
 	return 0;
 }
 
+static bool msm_chg_check_secondary_det(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+	bool ret = false;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		ret = chg_det & (1 << 4);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x87);
+		ret = chg_det & 1;
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+static void msm_chg_enable_secondary_det(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		/* Turn off charger block */
+		chg_det |= ~(1 << 1);
+		ulpi_write(otg, chg_det, 0x34);
+		udelay(20);
+		/* control chg block via ULPI */
+		chg_det &= ~(1 << 3);
+		ulpi_write(otg, chg_det, 0x34);
+		/* put it in host mode for enabling D- source */
+		chg_det &= ~(1 << 2);
+		ulpi_write(otg, chg_det, 0x34);
+		/* Turn on chg detect block */
+		chg_det &= ~(1 << 1);
+		ulpi_write(otg, chg_det, 0x34);
+		udelay(20);
+		/* enable chg detection */
+		chg_det &= ~(1 << 0);
+		ulpi_write(otg, chg_det, 0x34);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		/*
+		 * Configure DM as current source, DP as current sink
+		 * and enable battery charging comparators.
+		 */
+		ulpi_write(otg, 0x8, 0x85);
+		ulpi_write(otg, 0x2, 0x85);
+		ulpi_write(otg, 0x1, 0x85);
+		break;
+	default:
+		break;
+	}
+}
+
+static bool msm_chg_check_primary_det(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+	bool ret = false;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		ret = chg_det & (1 << 4);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x87);
+		ret = chg_det & 1;
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+static void msm_chg_enable_primary_det(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		/* enable chg detection */
+		chg_det &= ~(1 << 0);
+		ulpi_write(otg, chg_det, 0x34);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		/*
+		 * Configure DP as current source, DM as current sink
+		 * and enable battery charging comparators.
+		 */
+		ulpi_write(otg, 0x2, 0x85);
+		ulpi_write(otg, 0x1, 0x85);
+		break;
+	default:
+		break;
+	}
+}
+
+static bool msm_chg_check_dcd(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 line_state;
+	bool ret = false;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		line_state = ulpi_read(otg, 0x15);
+		ret = !(line_state & 1);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		line_state = ulpi_read(otg, 0x87);
+		ret = line_state & 2;
+		break;
+	default:
+		break;
+	}
+	return ret;
+}
+
+static void msm_chg_disable_dcd(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		chg_det &= ~(1 << 5);
+		ulpi_write(otg, chg_det, 0x34);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		ulpi_write(otg, 0x10, 0x86);
+		break;
+	default:
+		break;
+	}
+}
+
+static void msm_chg_enable_dcd(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 chg_det;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		/* Turn on D+ current source */
+		chg_det |= (1 << 5);
+		ulpi_write(otg, chg_det, 0x34);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		/* Data contact detection enable */
+		ulpi_write(otg, 0x10, 0x85);
+		break;
+	default:
+		break;
+	}
+}
+
+static void msm_chg_block_on(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 func_ctrl, chg_det;
+
+	/* put the controller in non-driving mode */
+	func_ctrl = ulpi_read(otg, ULPI_FUNC_CTRL);
+	func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
+	func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
+	ulpi_write(otg, func_ctrl, ULPI_FUNC_CTRL);
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		/* control chg block via ULPI */
+		chg_det &= ~(1 << 3);
+		ulpi_write(otg, chg_det, 0x34);
+		/* Turn on chg detect block */
+		chg_det &= ~(1 << 1);
+		ulpi_write(otg, chg_det, 0x34);
+		udelay(20);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		/* Clear charger detecting control bits */
+		ulpi_write(otg, 0x3F, 0x86);
+		/* Clear alt interrupt latch and enable bits */
+		ulpi_write(otg, 0x1F, 0x92);
+		ulpi_write(otg, 0x1F, 0x95);
+		udelay(100);
+		break;
+	default:
+		break;
+	}
+}
+
+static void msm_chg_block_off(struct msm_otg *motg)
+{
+	struct otg_transceiver *otg = &motg->otg;
+	u32 func_ctrl, chg_det;
+
+	switch (motg->pdata->phy_type) {
+	case CI_45NM_INTEGRATED_PHY:
+		chg_det = ulpi_read(otg, 0x34);
+		/* Turn off charger block */
+		chg_det |= ~(1 << 1);
+		ulpi_write(otg, chg_det, 0x34);
+		break;
+	case SNPS_28NM_INTEGRATED_PHY:
+		/* Clear charger detecting control bits */
+		ulpi_write(otg, 0x3F, 0x86);
+		/* Clear alt interrupt latch and enable bits */
+		ulpi_write(otg, 0x1F, 0x92);
+		ulpi_write(otg, 0x1F, 0x95);
+		break;
+	default:
+		break;
+	}
+
+	/* put the controller in normal mode */
+	func_ctrl = ulpi_read(otg, ULPI_FUNC_CTRL);
+	func_ctrl &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
+	func_ctrl |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
+	ulpi_write(otg, func_ctrl, ULPI_FUNC_CTRL);
+}
+
+#define MSM_CHG_DCD_POLL_TIME		(100 * HZ/1000) /* 100 msec */
+#define MSM_CHG_DCD_MAX_RETRIES		6 /* Tdcd_tmout = 6 * 100 msec */
+#define MSM_CHG_PRIMARY_DET_TIME	(40 * HZ/1000) /* TVDPSRC_ON */
+#define MSM_CHG_SECONDARY_DET_TIME	(40 * HZ/1000) /* TVDMSRC_ON */
+static void msm_chg_detect_work(struct work_struct *w)
+{
+	struct msm_otg *motg = container_of(w, struct msm_otg, chg_work.work);
+	struct otg_transceiver *otg = &motg->otg;
+	bool is_dcd, tmout, vout;
+	unsigned long delay;
+
+	dev_dbg(otg->dev, "chg detection work\n");
+	switch (motg->chg_state) {
+	case USB_CHG_STATE_UNDEFINED:
+		pm_runtime_get_sync(otg->dev);
+		msm_chg_block_on(motg);
+		msm_chg_enable_dcd(motg);
+		motg->chg_state = USB_CHG_STATE_WAIT_FOR_DCD;
+		motg->dcd_retries = 0;
+		delay = MSM_CHG_DCD_POLL_TIME;
+		break;
+	case USB_CHG_STATE_WAIT_FOR_DCD:
+		is_dcd = msm_chg_check_dcd(motg);
+		tmout = ++motg->dcd_retries == MSM_CHG_DCD_MAX_RETRIES;
+		if (is_dcd || tmout) {
+			msm_chg_disable_dcd(motg);
+			msm_chg_enable_primary_det(motg);
+			delay = MSM_CHG_PRIMARY_DET_TIME;
+			motg->chg_state = USB_CHG_STATE_DCD_DONE;
+		} else {
+			delay = MSM_CHG_DCD_POLL_TIME;
+		}
+		break;
+	case USB_CHG_STATE_DCD_DONE:
+		vout = msm_chg_check_primary_det(motg);
+		if (vout) {
+			msm_chg_enable_secondary_det(motg);
+			delay = MSM_CHG_SECONDARY_DET_TIME;
+			motg->chg_state = USB_CHG_STATE_PRIMARY_DONE;
+		} else {
+			motg->chg_type = USB_SDP_CHARGER;
+			motg->chg_state = USB_CHG_STATE_DETECTED;
+			delay = 0;
+		}
+		break;
+	case USB_CHG_STATE_PRIMARY_DONE:
+		vout = msm_chg_check_secondary_det(motg);
+		if (vout)
+			motg->chg_type = USB_DCP_CHARGER;
+		else
+			motg->chg_type = USB_CDP_CHARGER;
+		motg->chg_state = USB_CHG_STATE_SECONDARY_DONE;
+		/* fall through */
+	case USB_CHG_STATE_SECONDARY_DONE:
+		motg->chg_state = USB_CHG_STATE_DETECTED;
+	case USB_CHG_STATE_DETECTED:
+		msm_chg_block_off(motg);
+		dev_dbg(otg->dev, "charger = %d\n", motg->chg_type);
+		schedule_work(&motg->sm_work);
+		return;
+	default:
+		return;
+	}
+
+	schedule_delayed_work(&motg->chg_work, delay);
+}
+
 /*
  * We support OTG, Peripheral only and Host only configurations. In case
  * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen
@@ -633,9 +960,48 @@ static void msm_otg_sm_work(struct work_struct *w)
 			writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC);
 			msm_otg_start_host(otg, 1);
 			otg->state = OTG_STATE_A_HOST;
-		} else if (test_bit(B_SESS_VLD, &motg->inputs) && otg->gadget) {
-			msm_otg_start_peripheral(otg, 1);
-			otg->state = OTG_STATE_B_PERIPHERAL;
+		} else if (test_bit(B_SESS_VLD, &motg->inputs)) {
+			switch (motg->chg_state) {
+			case USB_CHG_STATE_UNDEFINED:
+				msm_chg_detect_work(&motg->chg_work.work);
+				break;
+			case USB_CHG_STATE_DETECTED:
+				switch (motg->chg_type) {
+				case USB_DCP_CHARGER:
+					msm_otg_notify_charger(motg,
+							IDEV_CHG_MAX);
+					break;
+				case USB_CDP_CHARGER:
+					msm_otg_notify_charger(motg,
+							IDEV_CHG_MAX);
+					msm_otg_start_peripheral(otg, 1);
+					otg->state = OTG_STATE_B_PERIPHERAL;
+					break;
+				case USB_SDP_CHARGER:
+					msm_otg_notify_charger(motg, IUNIT);
+					msm_otg_start_peripheral(otg, 1);
+					otg->state = OTG_STATE_B_PERIPHERAL;
+					break;
+				default:
+					break;
+				}
+				break;
+			default:
+				break;
+			}
+		} else {
+			/*
+			 * If charger detection work is pending, decrement
+			 * the pm usage counter to balance with the one that
+			 * is incremented in charger detection work.
+			 */
+			if (cancel_delayed_work_sync(&motg->chg_work)) {
+				pm_runtime_put_sync(otg->dev);
+				msm_otg_reset(otg);
+			}
+			msm_otg_notify_charger(motg, 0);
+			motg->chg_state = USB_CHG_STATE_UNDEFINED;
+			motg->chg_type = USB_INVALID_CHARGER;
 		}
 		pm_runtime_put_sync(otg->dev);
 		break;
@@ -643,7 +1009,10 @@ static void msm_otg_sm_work(struct work_struct *w)
 		dev_dbg(otg->dev, "OTG_STATE_B_PERIPHERAL state\n");
 		if (!test_bit(B_SESS_VLD, &motg->inputs) ||
 				!test_bit(ID, &motg->inputs)) {
+			msm_otg_notify_charger(motg, 0);
 			msm_otg_start_peripheral(otg, 0);
+			motg->chg_state = USB_CHG_STATE_UNDEFINED;
+			motg->chg_type = USB_INVALID_CHARGER;
 			otg->state = OTG_STATE_B_IDLE;
 			msm_otg_reset(otg);
 			schedule_work(w);
@@ -935,6 +1304,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 	writel(0, USB_OTGSC);
 
 	INIT_WORK(&motg->sm_work, msm_otg_sm_work);
+	INIT_DELAYED_WORK(&motg->chg_work, msm_chg_detect_work);
 	ret = request_irq(motg->irq, msm_otg_irq, IRQF_SHARED,
 					"msm_otg", motg);
 	if (ret) {
@@ -945,6 +1315,7 @@ static int __init msm_otg_probe(struct platform_device *pdev)
 	otg->init = msm_otg_reset;
 	otg->set_host = msm_otg_set_host;
 	otg->set_peripheral = msm_otg_set_peripheral;
+	otg->set_power = msm_otg_set_power;
 
 	otg->io_ops = &msm_otg_io_ops;
 
@@ -1004,6 +1375,7 @@ static int __devexit msm_otg_remove(struct platform_device *pdev)
 		return -EBUSY;
 
 	msm_otg_debugfs_cleanup();
+	cancel_delayed_work_sync(&motg->chg_work);
 	cancel_work_sync(&motg->sm_work);
 
 	pm_runtime_resume(&pdev->dev);
diff --git a/include/linux/usb/msm_hsusb.h b/include/linux/usb/msm_hsusb.h
index 31ef1853f93c..00311fe9d0df 100644
--- a/include/linux/usb/msm_hsusb.h
+++ b/include/linux/usb/msm_hsusb.h
@@ -2,7 +2,7 @@
  *
  * Copyright (C) 2008 Google, Inc.
  * Author: Brian Swetland <swetland@google.com>
- * Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
+ * Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved.
  *
  * This software is licensed under the terms of the GNU General Public
  * License version 2, as published by the Free Software Foundation, and
@@ -53,6 +53,64 @@ enum otg_control_type {
 	OTG_USER_CONTROL,
 };
 
+/**
+ * PHY used in
+ *
+ * INVALID_PHY			Unsupported PHY
+ * CI_45NM_INTEGRATED_PHY	Chipidea 45nm integrated PHY
+ * SNPS_28NM_INTEGRATED_PHY	Synopsis 28nm integrated PHY
+ *
+ */
+enum msm_usb_phy_type {
+	INVALID_PHY = 0,
+	CI_45NM_INTEGRATED_PHY,
+	SNPS_28NM_INTEGRATED_PHY,
+};
+
+#define IDEV_CHG_MAX	1500
+#define IUNIT		100
+
+/**
+ * Different states involved in USB charger detection.
+ *
+ * USB_CHG_STATE_UNDEFINED	USB charger is not connected or detection
+ *                              process is not yet started.
+ * USB_CHG_STATE_WAIT_FOR_DCD	Waiting for Data pins contact.
+ * USB_CHG_STATE_DCD_DONE	Data pin contact is detected.
+ * USB_CHG_STATE_PRIMARY_DONE	Primary detection is completed (Detects
+ *                              between SDP and DCP/CDP).
+ * USB_CHG_STATE_SECONDARY_DONE	Secondary detection is completed (Detects
+ *                              between DCP and CDP).
+ * USB_CHG_STATE_DETECTED	USB charger type is determined.
+ *
+ */
+enum usb_chg_state {
+	USB_CHG_STATE_UNDEFINED = 0,
+	USB_CHG_STATE_WAIT_FOR_DCD,
+	USB_CHG_STATE_DCD_DONE,
+	USB_CHG_STATE_PRIMARY_DONE,
+	USB_CHG_STATE_SECONDARY_DONE,
+	USB_CHG_STATE_DETECTED,
+};
+
+/**
+ * USB charger types
+ *
+ * USB_INVALID_CHARGER	Invalid USB charger.
+ * USB_SDP_CHARGER	Standard downstream port. Refers to a downstream port
+ *                      on USB2.0 compliant host/hub.
+ * USB_DCP_CHARGER	Dedicated charger port (AC charger/ Wall charger).
+ * USB_CDP_CHARGER	Charging downstream port. Enumeration can happen and
+ *                      IDEV_CHG_MAX can be drawn irrespective of USB state.
+ *
+ */
+enum usb_chg_type {
+	USB_INVALID_CHARGER = 0,
+	USB_SDP_CHARGER,
+	USB_DCP_CHARGER,
+	USB_CDP_CHARGER,
+};
+
 /**
  * struct msm_otg_platform_data - platform device data
  *              for msm_otg driver.
@@ -74,6 +132,7 @@ struct msm_otg_platform_data {
 	enum usb_mode_type mode;
 	enum otg_control_type otg_control;
 	enum usb_mode_type default_mode;
+	enum msm_usb_phy_type phy_type;
 	void (*setup_gpio)(enum usb_otg_state state);
 	char *pclk_src_name;
 };
@@ -93,6 +152,12 @@ struct msm_otg_platform_data {
  * @sm_work: OTG state machine work.
  * @in_lpm: indicates low power mode (LPM) state.
  * @async_int: Async interrupt arrived.
+ * @cur_power: The amount of mA available from downstream port.
+ * @chg_work: Charger detection work.
+ * @chg_state: The state of charger detection process.
+ * @chg_type: The type of charger attached.
+ * @dcd_retires: The retry count used to track Data contact
+ *               detection process.
  */
 struct msm_otg {
 	struct otg_transceiver otg;
@@ -110,6 +175,11 @@ struct msm_otg {
 	struct work_struct sm_work;
 	atomic_t in_lpm;
 	int async_int;
+	unsigned cur_power;
+	struct delayed_work chg_work;
+	enum usb_chg_state chg_state;
+	enum usb_chg_type chg_type;
+	u8 dcd_retries;
 };
 
 #endif
-- 
cgit v1.2.3


From 04aebcbb1b6dccadc8862b2765265f65a946db57 Mon Sep 17 00:00:00 2001
From: Pavankumar Kondeti <pkondeti@codeaurora.org>
Date: Wed, 4 May 2011 10:19:49 +0530
Subject: USB: OTG: msm: Add PHY suspend support for MSM8960

Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/otg/msm_otg.c        | 64 +++++++++++++++++++++++++++++++++-------
 include/linux/usb/msm_hsusb_hw.h |  2 ++
 2 files changed, 56 insertions(+), 10 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/otg/msm_otg.c b/drivers/usb/otg/msm_otg.c
index 628ba7d943da..1cdda6c05238 100644
--- a/drivers/usb/otg/msm_otg.c
+++ b/drivers/usb/otg/msm_otg.c
@@ -163,6 +163,32 @@ put_3p3:
 	return rc;
 }
 
+#ifdef CONFIG_PM_SLEEP
+#define USB_PHY_SUSP_DIG_VOL  500000
+static int msm_hsusb_config_vddcx(int high)
+{
+	int max_vol = USB_PHY_VDD_DIG_VOL_MAX;
+	int min_vol;
+	int ret;
+
+	if (high)
+		min_vol = USB_PHY_VDD_DIG_VOL_MIN;
+	else
+		min_vol = USB_PHY_SUSP_DIG_VOL;
+
+	ret = regulator_set_voltage(hsusb_vddcx, min_vol, max_vol);
+	if (ret) {
+		pr_err("%s: unable to set the voltage for regulator "
+			"HSUSB_VDDCX\n", __func__);
+		return ret;
+	}
+
+	pr_debug("%s: min_vol:%d max_vol:%d\n", __func__, min_vol, max_vol);
+
+	return ret;
+}
+#endif
+
 static int msm_hsusb_ldo_set_mode(int on)
 {
 	int ret = 0;
@@ -434,27 +460,28 @@ static int msm_otg_suspend(struct msm_otg *motg)
 
 	disable_irq(motg->irq);
 	/*
+	 * Chipidea 45-nm PHY suspend sequence:
+	 *
 	 * Interrupt Latch Register auto-clear feature is not present
 	 * in all PHY versions. Latch register is clear on read type.
 	 * Clear latch register to avoid spurious wakeup from
 	 * low power mode (LPM).
-	 */
-	ulpi_read(otg, 0x14);
-
-	/*
+	 *
 	 * PHY comparators are disabled when PHY enters into low power
 	 * mode (LPM). Keep PHY comparators ON in LPM only when we expect
 	 * VBUS/Id notifications from USB PHY. Otherwise turn off USB
 	 * PHY comparators. This save significant amount of power.
-	 */
-	if (pdata->otg_control == OTG_PHY_CONTROL)
-		ulpi_write(otg, 0x01, 0x30);
-
-	/*
+	 *
 	 * PLL is not turned off when PHY enters into low power mode (LPM).
 	 * Disable PLL for maximum power savings.
 	 */
-	ulpi_write(otg, 0x08, 0x09);
+
+	if (motg->pdata->phy_type == CI_45NM_INTEGRATED_PHY) {
+		ulpi_read(otg, 0x14);
+		if (pdata->otg_control == OTG_PHY_CONTROL)
+			ulpi_write(otg, 0x01, 0x30);
+		ulpi_write(otg, 0x08, 0x09);
+	}
 
 	/*
 	 * PHY may take some time or even fail to enter into low power
@@ -485,6 +512,10 @@ static int msm_otg_suspend(struct msm_otg *motg)
 	 */
 	writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD);
 
+	if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
+			motg->pdata->otg_control == OTG_PMIC_CONTROL)
+		writel(readl(USB_PHY_CTRL) | PHY_RETEN, USB_PHY_CTRL);
+
 	clk_disable(motg->pclk);
 	clk_disable(motg->clk);
 	if (motg->core_clk)
@@ -493,6 +524,12 @@ static int msm_otg_suspend(struct msm_otg *motg)
 	if (!IS_ERR(motg->pclk_src))
 		clk_disable(motg->pclk_src);
 
+	if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
+			motg->pdata->otg_control == OTG_PMIC_CONTROL) {
+		msm_hsusb_ldo_set_mode(0);
+		msm_hsusb_config_vddcx(0);
+	}
+
 	if (device_may_wakeup(otg->dev))
 		enable_irq_wake(motg->irq);
 	if (bus)
@@ -524,6 +561,13 @@ static int msm_otg_resume(struct msm_otg *motg)
 	if (motg->core_clk)
 		clk_enable(motg->core_clk);
 
+	if (motg->pdata->phy_type == SNPS_28NM_INTEGRATED_PHY &&
+			motg->pdata->otg_control == OTG_PMIC_CONTROL) {
+		msm_hsusb_ldo_set_mode(1);
+		msm_hsusb_config_vddcx(1);
+		writel(readl(USB_PHY_CTRL) & ~PHY_RETEN, USB_PHY_CTRL);
+	}
+
 	temp = readl(USB_USBCMD);
 	temp &= ~ASYNC_INTR_CTRL;
 	temp &= ~ULPI_STP_CTRL;
diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h
index 7d1babbff071..6e97a2d3d39f 100644
--- a/include/linux/usb/msm_hsusb_hw.h
+++ b/include/linux/usb/msm_hsusb_hw.h
@@ -24,6 +24,7 @@
 #define USB_PORTSC           (MSM_USB_BASE + 0x0184)
 #define USB_OTGSC            (MSM_USB_BASE + 0x01A4)
 #define USB_USBMODE          (MSM_USB_BASE + 0x01A8)
+#define USB_PHY_CTRL         (MSM_USB_BASE + 0x0240)
 
 #define USBCMD_RESET   2
 #define USB_USBINTR          (MSM_USB_BASE + 0x0148)
@@ -42,6 +43,7 @@
 
 #define ASYNC_INTR_CTRL         (1 << 29) /* Enable async interrupt */
 #define ULPI_STP_CTRL           (1 << 30) /* Block communication with PHY */
+#define PHY_RETEN               (1 << 1) /* PHY retention enable/disable */
 
 /* OTG definitions */
 #define OTGSC_INTSTS_MASK	(0x7f << 16)
-- 
cgit v1.2.3


From 1b9ba000177ee47bcc5b44c7c34e48e735f5f9b1 Mon Sep 17 00:00:00 2001
From: Roger Quadros <roger.quadros@nokia.com>
Date: Mon, 9 May 2011 13:08:06 +0300
Subject: usb: gadget: composite: Allow function drivers to pause control
 transfers

Some USB function drivers (e.g. f_mass_storage.c) need to delay or defer the
data/status stages of standard control requests like SET_CONFIGURATION or
SET_INTERFACE till they are done with their bookkeeping and are actually ready
for accepting new commands to their interface.

They can now achieve this functionality by returning USB_GADGET_DELAYED_STATUS
in their setup handlers (e.g. set_alt()). The composite framework will then
defer completion of the control transfer by not completing the data/status stages.

This ensures that the host does not send new packets to the interface till the
function driver is ready to take them.

When the function driver that requested for USB_GADGET_DELAYED_STATUS is done
with its bookkeeping, it should signal the composite framework to continue with
the data/status stages of the control transfer. It can do so by invoking
the new API usb_composite_setup_continue(). This is where the control transfer's
data/status stages are completed and host can initiate new transfers.

The DELAYED_STATUS mechanism is currently only supported if the expected data phase
is 0 bytes (i.e. w_length == 0). Since SET_CONFIGURATION and SET_INTERFACE are the
only cases that will use this mechanism, this is not a limitation.

Signed-off-by: Roger Quadros <roger.quadros@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/composite.c | 62 +++++++++++++++++++++++++++++++++++++++++-
 include/linux/usb/composite.h  | 16 ++++++++++-
 2 files changed, 76 insertions(+), 2 deletions(-)

(limited to 'include')

diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 82314ed22506..5cbb1a41c223 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -461,12 +461,23 @@ static int set_config(struct usb_composite_dev *cdev,
 			reset_config(cdev);
 			goto done;
 		}
+
+		if (result == USB_GADGET_DELAYED_STATUS) {
+			DBG(cdev,
+			 "%s: interface %d (%s) requested delayed status\n",
+					__func__, tmp, f->name);
+			cdev->delayed_status++;
+			DBG(cdev, "delayed_status count %d\n",
+					cdev->delayed_status);
+		}
 	}
 
 	/* when we return, be sure our power usage is valid */
 	power = c->bMaxPower ? (2 * c->bMaxPower) : CONFIG_USB_GADGET_VBUS_DRAW;
 done:
 	usb_gadget_vbus_draw(gadget, power);
+	if (result >= 0 && cdev->delayed_status)
+		result = USB_GADGET_DELAYED_STATUS;
 	return result;
 }
 
@@ -895,6 +906,14 @@ composite_setup(struct usb_gadget *gadget, const struct usb_ctrlrequest *ctrl)
 		if (w_value && !f->set_alt)
 			break;
 		value = f->set_alt(f, w_index, w_value);
+		if (value == USB_GADGET_DELAYED_STATUS) {
+			DBG(cdev,
+			 "%s: interface %d (%s) requested delayed status\n",
+					__func__, intf, f->name);
+			cdev->delayed_status++;
+			DBG(cdev, "delayed_status count %d\n",
+					cdev->delayed_status);
+		}
 		break;
 	case USB_REQ_GET_INTERFACE:
 		if (ctrl->bRequestType != (USB_DIR_IN|USB_RECIP_INTERFACE))
@@ -958,7 +977,7 @@ unknown:
 	}
 
 	/* respond with data transfer before status phase? */
-	if (value >= 0) {
+	if (value >= 0 && value != USB_GADGET_DELAYED_STATUS) {
 		req->length = value;
 		req->zero = value < w_length;
 		value = usb_ep_queue(gadget->ep0, req, GFP_ATOMIC);
@@ -967,6 +986,10 @@ unknown:
 			req->status = 0;
 			composite_setup_complete(gadget->ep0, req);
 		}
+	} else if (value == USB_GADGET_DELAYED_STATUS && w_length != 0) {
+		WARN(cdev,
+			"%s: Delayed status not supported for w_length != 0",
+			__func__);
 	}
 
 done:
@@ -1289,3 +1312,40 @@ void usb_composite_unregister(struct usb_composite_driver *driver)
 		return;
 	usb_gadget_unregister_driver(&composite_driver);
 }
+
+/**
+ * usb_composite_setup_continue() - Continue with the control transfer
+ * @cdev: the composite device who's control transfer was kept waiting
+ *
+ * This function must be called by the USB function driver to continue
+ * with the control transfer's data/status stage in case it had requested to
+ * delay the data/status stages. A USB function's setup handler (e.g. set_alt())
+ * can request the composite framework to delay the setup request's data/status
+ * stages by returning USB_GADGET_DELAYED_STATUS.
+ */
+void usb_composite_setup_continue(struct usb_composite_dev *cdev)
+{
+	int			value;
+	struct usb_request	*req = cdev->req;
+	unsigned long		flags;
+
+	DBG(cdev, "%s\n", __func__);
+	spin_lock_irqsave(&cdev->lock, flags);
+
+	if (cdev->delayed_status == 0) {
+		WARN(cdev, "%s: Unexpected call\n", __func__);
+
+	} else if (--cdev->delayed_status == 0) {
+		DBG(cdev, "%s: Completing delayed status\n", __func__);
+		req->length = 0;
+		value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
+		if (value < 0) {
+			DBG(cdev, "ep_queue --> %d\n", value);
+			req->status = 0;
+			composite_setup_complete(cdev->gadget->ep0, req);
+		}
+	}
+
+	spin_unlock_irqrestore(&cdev->lock, flags);
+}
+
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 882a084a8411..b78cba466d3d 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -37,6 +37,14 @@
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
 
+/*
+ * USB function drivers should return USB_GADGET_DELAYED_STATUS if they
+ * wish to delay the data/status stages of the control transfer till they
+ * are ready. The control transfer will then be kept from completing till
+ * all the function drivers that requested for USB_GADGET_DELAYED_STAUS
+ * invoke usb_composite_setup_continue().
+ */
+#define USB_GADGET_DELAYED_STATUS       0x7fff	/* Impossibly large value */
 
 struct usb_configuration;
 
@@ -285,6 +293,7 @@ struct usb_composite_driver {
 extern int usb_composite_probe(struct usb_composite_driver *driver,
 			       int (*bind)(struct usb_composite_dev *cdev));
 extern void usb_composite_unregister(struct usb_composite_driver *driver);
+extern void usb_composite_setup_continue(struct usb_composite_dev *cdev);
 
 
 /**
@@ -342,7 +351,12 @@ struct usb_composite_dev {
 	 */
 	unsigned			deactivations;
 
-	/* protects at least deactivation count */
+	/* the composite driver won't complete the control transfer's
+	 * data/status stages till delayed_status is zero.
+	 */
+	int				delayed_status;
+
+	/* protects deactivations and delayed_status counts*/
 	spinlock_t			lock;
 };
 
-- 
cgit v1.2.3