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[v5,07/23] usb: chipidea: Notify events when switching host mode

Message ID 20161018015636.11701-8-stephen.boyd@linaro.org (mailing list archive)
State Not Applicable, archived
Delegated to: Andy Gross
Headers show

Commit Message

Stephen Boyd Oct. 18, 2016, 1:56 a.m. UTC 
The chipidea/udc.c file sends a CI_HDRC_CONTROLLER_RESET_EVENT to
the wrapper drivers when it calls hw_device_reset(), but that
function is not called from chipidea/host.c. And the udc.c file
sends the CI_HDRC_CONTROLLER_STOPPED_EVENT but the host.c file
doesn't do anything.

The intent of the reset event is to allow the wrapper driver to
do any wrapper specific things after the reset bit has been set
in the usb command register. Therefore, add this event hook in
the host role after we toggle that bit.

Similarly, the intent of the stopped event is to allow the
wrapper driver to do any wrapper specific things after the device
is stopped. So when we stop the host role, send the stopped
event.

Acked-by: Peter Chen <peter.chen@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
---
 drivers/usb/chipidea/host.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c
index 96ae69502c86..f036a9e39ced 100644
--- a/drivers/usb/chipidea/host.c
+++ b/drivers/usb/chipidea/host.c
@@ -90,6 +90,9 @@  static int ehci_ci_reset(struct usb_hcd *hcd)
 
 	ehci->need_io_watchdog = 0;
 
+	if (ci->platdata->notify_event)
+		ci->platdata->notify_event(ci, CI_HDRC_CONTROLLER_RESET_EVENT);
+
 	ci_platform_configure(ci);
 
 	return ret;
@@ -187,6 +190,9 @@  static void host_stop(struct ci_hdrc *ci)
 	struct usb_hcd *hcd = ci->hcd;
 
 	if (hcd) {
+		if (ci->platdata->notify_event)
+			ci->platdata->notify_event(ci,
+				CI_HDRC_CONTROLLER_STOPPED_EVENT);
 		usb_remove_hcd(hcd);
 		usb_put_hcd(hcd);
 		if (ci->platdata->reg_vbus && !ci_otg_is_fsm_mode(ci) &&