linux-kernel - [PATCH] usb: typec: clear usb_pd flag if change to typec only mode

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Message-ID: <1638241033-12467-1-git-send-email-steven_syu@asus.com>
Date:   Tue, 30 Nov 2021 10:57:13 +0800
From:   steven_syu <steven_syu@...s.com>
To:     <heikki.krogerus@...ux.intel.com>
CC:     <gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, steven_syu <steven_syu@...s.com>
Subject: [PATCH] usb: typec: clear usb_pd flag if change to typec only mode

This patch handle power mode change from PD to Type-C only
and the user space unknown power delivery  was turned off
by typec driver.

Signed-off-by: steven_syu <steven_syu@...s.com>
---
 drivers/usb/typec/class.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index aeef453..11e2a98 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1718,6 +1718,10 @@ void typec_set_pwr_opmode(struct typec_port *port,
                        partner->usb_pd = 1;
                        sysfs_notify(&partner_dev->kobj, NULL,
                                     "supports_usb_power_delivery");
+               } else if (opmode != TYPEC_PWR_MODE_PD && partner->usb_pd) {
+                       partner->usb_pd = 0;
+                       sysfs_notify(&partner_dev->kobj, NULL,
+                                    "supports_usb_power_delivery");
                }
                put_device(partner_dev);
        }
--
2.7.4

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