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Mon, 17 Nov 2025 16:41:08 +0800 (GMT+08:00) Message-ID: Date: Mon, 17 Nov 2025 16:41:07 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v9 01/10] usb: typec: Add notifier functions To: Heikki Krogerus , Chaoyi Chen Cc: Greg Kroah-Hartman , Dmitry Baryshkov , Peter Chen , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , Kishon Vijay Abraham I , Heiko Stuebner , Sandy Huang , Andy Yan , Yubing Zhang , Frank Wang , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Amit Sunil Dhamne , Dragan Simic , Johan Jonker , Diederik de Haas , Peter Robinson , linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org References: <20251111105040.94-1-kernel@airkyi.com> <20251111105040.94-2-kernel@airkyi.com> Content-Language: en-US From: Chaoyi Chen In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-HM-Tid: 0a9a90f9990e03abkunm4cb37f2e8ef5d7 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGh9LGVZMTEpKSElOTUgeQhlWFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSEpPSE xVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=hOFtIT19tQHGKm/AjIrU3dl9n7oTP30e+3028Vz/xpPVYhiRb5DY+GdzDQAke2B4uTj9X52JMiN7m3Q5PbecpuNBUkv1arKOXPCcGAo1RbjOs6PsLqyySe5MADqb96G35VF9Hr2XNq1Fuhgo/zOfm3gqq8ppid45A8xGVpVncIk=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=tB5/oLgZQyjNeula29g1R0qnMwKqvTtythdvgE1DMgw=; h=date:mime-version:subject:message-id:from; X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 11/17/2025 4:33 PM, Heikki Krogerus wrote: > Tue, Nov 11, 2025 at 06:50:31PM +0800, Chaoyi Chen kirjoitti: >> From: Chaoyi Chen >> >> Some other part of kernel may want to know the event of typec bus. >> >> This patch add common notifier function to notify these event. >> >> Signed-off-by: Chaoyi Chen >> --- >> >> Changes in v9: >> - Remove redundant header files. >> >> Changes in v8: >> - Fix coding style. >> >> drivers/usb/typec/Makefile | 2 +- >> drivers/usb/typec/bus.h | 2 ++ >> drivers/usb/typec/class.c | 2 ++ >> drivers/usb/typec/notify.c | 23 +++++++++++++++++++++++ >> include/linux/usb/typec_altmode.h | 9 +++++++++ >> 5 files changed, 37 insertions(+), 1 deletion(-) >> create mode 100644 drivers/usb/typec/notify.c >> >> diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile >> index 7a368fea61bc..20d09c5314d7 100644 >> --- a/drivers/usb/typec/Makefile >> +++ b/drivers/usb/typec/Makefile >> @@ -1,6 +1,6 @@ >> # SPDX-License-Identifier: GPL-2.0 >> obj-$(CONFIG_TYPEC) += typec.o >> -typec-y := class.o mux.o bus.o pd.o retimer.o >> +typec-y := class.o mux.o notify.o bus.o pd.o retimer.o >> typec-$(CONFIG_ACPI) += port-mapper.o >> obj-$(CONFIG_TYPEC) += altmodes/ >> obj-$(CONFIG_TYPEC_TCPM) += tcpm/ >> diff --git a/drivers/usb/typec/bus.h b/drivers/usb/typec/bus.h >> index 643b8c81786d..820b59b6d434 100644 >> --- a/drivers/usb/typec/bus.h >> +++ b/drivers/usb/typec/bus.h >> @@ -26,6 +26,8 @@ struct altmode { >> struct altmode *plug[2]; >> }; >> >> +void typec_notify_event(unsigned long event, void *data); >> + >> #define to_altmode(d) container_of(d, struct altmode, adev) >> >> extern const struct bus_type typec_bus; >> diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c >> index 9b2647cb199b..9d2aa3dd3f56 100644 >> --- a/drivers/usb/typec/class.c >> +++ b/drivers/usb/typec/class.c >> @@ -600,6 +600,8 @@ typec_register_altmode(struct device *parent, >> return ERR_PTR(ret); >> } >> >> + typec_notify_event(TYPEC_ALTMODE_REGISTERED, &alt->adev); >> + >> return &alt->adev; >> } > You need to also send TYPEC_ALTMODE_UNREGISTERED notification in > typec_unregister_altmode(). > Sorry, I left that out. I will fix this in v10. Thank you. -- Best, Chaoyi