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authorVardan Mikayelyan <mvardan@synopsys.com>2018-02-16 13:10:39 +0300
committerFelipe Balbi <felipe.balbi@linux.intel.com>2018-03-13 11:47:56 +0300
commit624815ce322dda89714d887c6445dbd6ca45af31 (patch)
tree5a1d4653bf4fd64a4edc8c6d62d571702879e077 /drivers/usb/dwc2/core.c
parentc5c403dc43365d1669e5a36829356b1bfddbd39e (diff)
downloadlinux-624815ce322dda89714d887c6445dbd6ca45af31.tar.xz
usb: dwc2: Add dwc2_enter_hibernation(), dwc2_exit_hibernation()
These are wrapper functions which are calling device or host enter/exit hibernation functions. Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com> Signed-off-by: John Youn <johnyoun@synopsys.com> Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc2/core.c')
-rw-r--r--drivers/usb/dwc2/core.c38
1 files changed, 38 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index 73b05a8ccba1..280ecddf82cb 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -449,6 +449,44 @@ static bool dwc2_iddig_filter_enabled(struct dwc2_hsotg *hsotg)
}
/*
+ * dwc2_enter_hibernation() - Common function to enter hibernation.
+ *
+ * @hsotg: Programming view of the DWC_otg controller
+ * @is_host: True if core is in host mode.
+ *
+ * Return: 0 if successful, negative error code otherwise
+ */
+int dwc2_enter_hibernation(struct dwc2_hsotg *hsotg, int is_host)
+{
+ if (hsotg->params.power_down != DWC2_POWER_DOWN_PARAM_HIBERNATION)
+ return -ENOTSUPP;
+
+ if (is_host)
+ return dwc2_host_enter_hibernation(hsotg);
+ else
+ return dwc2_gadget_enter_hibernation(hsotg);
+}
+
+/*
+ * dwc2_exit_hibernation() - Common function to exit from hibernation.
+ *
+ * @hsotg: Programming view of the DWC_otg controller
+ * @rem_wakeup: Remote-wakeup, enabled in case of remote-wakeup.
+ * @reset: Enabled in case of restore with reset.
+ * @is_host: True if core is in host mode.
+ *
+ * Return: 0 if successful, negative error code otherwise
+ */
+int dwc2_exit_hibernation(struct dwc2_hsotg *hsotg, int rem_wakeup,
+ int reset, int is_host)
+{
+ if (is_host)
+ return dwc2_host_exit_hibernation(hsotg, rem_wakeup, reset);
+ else
+ return dwc2_gadget_exit_hibernation(hsotg, rem_wakeup, reset);
+}
+
+/*
* Do core a soft reset of the core. Be careful with this because it
* resets all the internal state machines of the core.
*/