linux-kernel - [PATCH] platform/chrome: cros_usbpd_notify: Listen to EC_HOST_EVENT_USB

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Message-Id: <20210414064524.2450908-1-pihsun@chromium.org>
Date:   Wed, 14 Apr 2021 14:45:24 +0800
From:   Pi-Hsun Shih <pihsun@...omium.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Pi-Hsun Shih <pihsun@...omium.org>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] platform/chrome: cros_usbpd_notify: Listen to EC_HOST_EVENT_USB_MUX host event

On system that use ACPI, cros_usbpd_notify gets notifications of USB MUX
host event same as PD host events [1]. But currently on system that use
DT, the driver only listen on EC_HOST_EVENT_PD_MCU.

Add EC_HOST_EVENT_USB_MUX to the list of host events, so we have same
behavior on all platforms.

[1]: https://chromium.googlesource.com/chromiumos/third_party/coreboot/+/refs/heads/chromeos-2016.05/src/ec/google/chromeec/acpi/ec.asl#382

Signed-off-by: Pi-Hsun Shih <pihsun@...omium.org>
---
 drivers/platform/chrome/cros_usbpd_notify.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/chrome/cros_usbpd_notify.c b/drivers/platform/chrome/cros_usbpd_notify.c
index 7f36142ab12a..48a6617aa12f 100644
--- a/drivers/platform/chrome/cros_usbpd_notify.c
+++ b/drivers/platform/chrome/cros_usbpd_notify.c
@@ -220,7 +220,8 @@ static int cros_usbpd_notify_plat(struct notifier_block *nb,
 	if (!host_event)
 		return NOTIFY_DONE;
 
-	if (host_event & EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU)) {
+	if (host_event & (EC_HOST_EVENT_MASK(EC_HOST_EVENT_PD_MCU) |
+			  EC_HOST_EVENT_MASK(EC_HOST_EVENT_USB_MUX))) {
 		cros_usbpd_get_event_and_notify(pdnotify->dev, ec_dev);
 		return NOTIFY_OK;
 	}

base-commit: 50987beca096a7ed4f453a6da245fd6a2fadedeb
-- 
2.31.1.295.g9ea45b61b8-goog