[PATCH v4] platform/chrome: cros_ec: Notify the PM of wake events during resume

[PATCH v4] platform/chrome: cros_ec: Notify the PM of wake events during resume

[Jameson Thies]

cros_ec_handle_event in the cros_ec driver can notify the PM of wake
events. When a device is suspended, cros_ec_handle_event will not check
MKBP events. Instead, received MKBP events are checked during resume by
cros_ec_report_events_during_suspend. But
cros_ec_report_events_during_suspend cannot notify the PM if received
events are wake events, causing wake events to not be reported if
received while the device is suspended.

Update cros_ec_report_events_during_suspend to notify the PM of wake
events during resume by calling pm_wakeup_event.

Signed-off-by: Jameson Thies <jthies@google.com>
Reviewed-by: Prashant Malani <pmalani@chromium.org>
Reviewed-by: Benson Leung <bleung@chromium.org>
---

Changes since v1:
- Updated wording in commit message from "Log" to "Notify PM of".

Changes since v2:
- Removed Reviewed-by tag and provided more context for the update in
  the commit message.

Changes since v3:
- Added reviewers back into commit message.
---
 drivers/platform/chrome/cros_ec.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
index 8aace50d446d..110df0fd4b00 100644
--- a/drivers/platform/chrome/cros_ec.c
+++ b/drivers/platform/chrome/cros_ec.c
@@ -349,10 +349,16 @@ EXPORT_SYMBOL(cros_ec_suspend);
 
 static void cros_ec_report_events_during_suspend(struct cros_ec_device *ec_dev)
 {
+	bool wake_event;
+
 	while (ec_dev->mkbp_event_supported &&
-	       cros_ec_get_next_event(ec_dev, NULL, NULL) > 0)
+	       cros_ec_get_next_event(ec_dev, &wake_event, NULL) > 0) {
 		blocking_notifier_call_chain(&ec_dev->event_notifier,
 					     1, ec_dev);
+
+		if (wake_event && device_may_wakeup(ec_dev->dev))
+			pm_wakeup_event(ec_dev->dev, 0);
+	}
 }
 
 /**
-- 
2.37.2.789.g6183377224-goog

Re: [PATCH v4] platform/chrome: cros_ec: Notify the PM of wake events during resume

[patchwork-bot+chrome-platform]

Hello:

This patch was applied to chrome-platform/linux.git (for-kernelci)
by Tzung-Bi Shih <tzungbi@kernel.org>:

On Tue, 13 Sep 2022 20:49:54 +0000 you wrote:
> cros_ec_handle_event in the cros_ec driver can notify the PM of wake
> events. When a device is suspended, cros_ec_handle_event will not check
> MKBP events. Instead, received MKBP events are checked during resume by
> cros_ec_report_events_during_suspend. But
> cros_ec_report_events_during_suspend cannot notify the PM if received
> events are wake events, causing wake events to not be reported if
> received while the device is suspended.
> 
> [...]

Here is the summary with links:
  - [v4] platform/chrome: cros_ec: Notify the PM of wake events during resume
    https://git.kernel.org/chrome-platform/c/8edd2752b0aa

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
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Re: [PATCH v4] platform/chrome: cros_ec: Notify the PM of wake events during resume

[patchwork-bot+chrome-platform]

Hello:

This patch was applied to chrome-platform/linux.git (for-next)
by Tzung-Bi Shih <tzungbi@kernel.org>:

On Tue, 13 Sep 2022 20:49:54 +0000 you wrote:
> cros_ec_handle_event in the cros_ec driver can notify the PM of wake
> events. When a device is suspended, cros_ec_handle_event will not check
> MKBP events. Instead, received MKBP events are checked during resume by
> cros_ec_report_events_during_suspend. But
> cros_ec_report_events_during_suspend cannot notify the PM if received
> events are wake events, causing wake events to not be reported if
> received while the device is suspended.
> 
> [...]

Here is the summary with links:
  - [v4] platform/chrome: cros_ec: Notify the PM of wake events during resume
    https://git.kernel.org/chrome-platform/c/8edd2752b0aa

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html