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ANDROID: usb: Add vendor hook for usb suspend and resume

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Add the hook that vendor can design and bypass the suspend/resume.
When the bypass is set, skip the orignal suspend/resume methods.

In mobile, a co-processor can be used with USB audio, and ACPU may
be able to sleep in such condition to improve power consumption.
We will need vendor hook to support this.

Bug: 192774581
Signed-off-by: Puma Hsu <pumahsu@google.com>
Change-Id: Ic62a8a1e662bbe3fb0aa17af7491daace0b9f18a
(cherry picked from commit 98085b5dd8)
This commit is contained in:
Puma Hsu
2021-07-10 16:11:10 +08:00
committed by Treehugger Robot
parent 4cbf19a6f8
commit 358b59f1bc
3 changed files with 23 additions and 0 deletions
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2
drivers/android/vendor_hooks.c
View File

@@ -312,3 +312,5 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_typec_tcpm_get_timer);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_typec_tcpm_modify_src_caps);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_typec_tcpm_log);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_sound_usb_support_cpu_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_rvh_usb_dev_suspend);
EXPORT_TRACEPOINT_SYMBOL_GPL(android_vh_usb_dev_resume);

12
drivers/usb/core/driver.c
View File

@@ -34,6 +34,7 @@
#include "usb.h"
#include <trace/hooks/usb.h>
/*
* Adds a new dynamic USBdevice ID to this driver,
@@ -1399,11 +1400,16 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg)
int status = 0;
int i = 0, n = 0;
struct usb_interface *intf;
int bypass = 0;
if (udev->state == USB_STATE_NOTATTACHED ||
udev->state == USB_STATE_SUSPENDED)
goto done;
trace_android_rvh_usb_dev_suspend(udev, msg, &bypass);
if (bypass)
goto done;
/* Suspend all the interfaces and then udev itself */
if (udev->actconfig) {
n = udev->actconfig->desc.bNumInterfaces;
@@ -1500,11 +1506,17 @@ static int usb_resume_both(struct usb_device *udev, pm_message_t msg)
int status = 0;
int i;
struct usb_interface *intf;
int bypass = 0;
if (udev->state == USB_STATE_NOTATTACHED) {
status = -ENODEV;
goto done;
}
trace_android_vh_usb_dev_resume(udev, msg, &bypass);
if (bypass)
goto done;
udev->can_submit = 1;
/* Resume the device */

9
include/trace/hooks/usb.h
View File

@@ -15,6 +15,15 @@ struct usb_device;
DECLARE_HOOK(android_vh_usb_new_device_added,
TP_PROTO(struct usb_device *udev, int *err),
TP_ARGS(udev, err));
DECLARE_RESTRICTED_HOOK(android_rvh_usb_dev_suspend,
TP_PROTO(struct usb_device *udev, pm_message_t msg, int *bypass),
TP_ARGS(udev, msg, bypass), 1);
DECLARE_HOOK(android_vh_usb_dev_resume,
TP_PROTO(struct usb_device *udev, pm_message_t msg, int *bypass),
TP_ARGS(udev, msg, bypass));
#endif /* _TRACE_HOOK_USB_H */
/* This part must be outside protection */
#include <trace/define_trace.h>