From patchwork Fri Jun 16 07:52:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wang X-Patchwork-Id: 13282193 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8878EB64D7 for ; Fri, 16 Jun 2023 07:53:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=2+lhM/mwaSEWTeOtSy8NP/k5jtcil6wWj4hCxxYCYSM=; b=sPMvHSy2Lbq3zM ImNH55HJ5S2pnY84QHEAgozj7hZV6360+KZxqbhCdzd/fMf5ICWTwJJ3shCczdgAkmi6kriikcJUy 9iZ9Tb9XumKUMXhJJFzmIUkyCLpWn4G7Moq0sMJ/Aql4sBylwQY3Rj8OlzodUWN04CgBZj6SmmRDE O8v3FaZbV4OKyuhzVwlMA0Gh6+CQh1eL5fiBrIvl1fo4NMOEmPPBSr+Z6p2trOp3Ml1vrk2BSZdfM Hd1KKZUHDmENDvLwy8jHX5RrGPppZovoZemo19L9tfviwk8Aaa0YF+OJv8kESMUn2DbueUhTjltfz QorP5VKqXv+TMxh4jyhQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qA4GU-00HCaY-1f; Fri, 16 Jun 2023 07:53:02 +0000 Received: from mail-m11879.qiye.163.com ([115.236.118.79]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qA4GQ-00HCY4-12 for linux-rockchip@lists.infradead.org; Fri, 16 Jun 2023 07:53:00 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11879.qiye.163.com (Hmail) with ESMTPA id 8AB9768093F; Fri, 16 Jun 2023 15:52:43 +0800 (CST) From: Frank Wang To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, sebastian.reichel@collabora.com, heiko@sntech.de Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, huangtao@rock-chips.com, william.wu@rock-chips.com, jianwei.zheng@rock-chips.com, yubing.zhang@rock-chips.com, wmc@rock-chips.com, Frank Wang Subject: [v4,1/2] usb: typec: tcpm: fix cc role at port reset Date: Fri, 16 Jun 2023 15:52:40 +0800 Message-Id: <20230616075241.27690-1-frank.wang@rock-chips.com> X-Mailer: git-send-email 2.17.1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQh1OGFYYTRhMQktJT01PSU1VEwETFh oSFyQUDg9ZV1kYEgtZQVlOQ1VJSVVMVUpKT1lXWRYaDxIVHRRZQVlPS0hVSklLQ05NVUpLS1VLWQ Y+ X-HM-Tid: 0a88c3313cb42eb5kusn8ab9768093f X-HM-MType: 1 X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Nhg6GBw4Lz1COhc9LC1MC0sI PT0aCjNVSlVKTUNNQktKQk1PT0xCVTMWGhIXVR0JGhUQVQwaFRw7CRQYEFYYExILCFUYFBZFWVdZ EgtZQVlOQ1VJSVVMVUpKT1lXWQgBWUFJT09DNwY+ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230616_005258_536633_F7565FF8 X-CRM114-Status: UNSURE ( 7.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org In the current implementation, the tcpm set CC1/CC2 role to open when it do port reset would cause the VBUS removed by the Type-C partner. This sets CC1/CC2 according to the default state of port to fix it. Signed-off-by: Frank Wang Reviewed-by: Guenter Roeck Acked-by: Heikki Krogerus --- Changelog: (no changes since v3) v2: - Make some tweaking based on the default state of port, commented by Guenter Roeck. v1: - https://patchwork.kernel.org/project/linux-usb/patch/20230313025843.17162-2-frank.wang@rock-chips.com/ drivers/usb/typec/tcpm/tcpm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 3c6b0c8e2d3ae..9f6aaa3e70ca8 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -4885,7 +4885,8 @@ static void run_state_machine(struct tcpm_port *port) break; case PORT_RESET: tcpm_reset_port(port); - tcpm_set_cc(port, TYPEC_CC_OPEN); + tcpm_set_cc(port, tcpm_default_state(port) == SNK_UNATTACHED ? + TYPEC_CC_RD : tcpm_rp_cc(port)); tcpm_set_state(port, PORT_RESET_WAIT_OFF, PD_T_ERROR_RECOVERY); break;