From patchwork Fri Dec 9 15:56:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 13069917 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD28DC4167B for ; Fri, 9 Dec 2022 15:56:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229521AbiLIP4o (ORCPT ); Fri, 9 Dec 2022 10:56:44 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230260AbiLIP4n (ORCPT ); Fri, 9 Dec 2022 10:56:43 -0500 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 430BCF008; Fri, 9 Dec 2022 07:56:42 -0800 (PST) X-IronPort-AV: E=Sophos;i="5.96,230,1665414000"; d="scan'208";a="145648838" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 10 Dec 2022 00:56:41 +0900 Received: from localhost.localdomain (unknown [10.226.92.54]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 81C414010EBA; Sat, 10 Dec 2022 00:56:39 +0900 (JST) From: Biju Das To: Heikki Krogerus Cc: Biju Das , Greg Kroah-Hartman , linux-usb@vger.kernel.org, Geert Uytterhoeven , Fabrizio Castro , linux-renesas-soc@vger.kernel.org Subject: [PATCH 4/4] usb: typec: hd3ss3220: Add polling support Date: Fri, 9 Dec 2022 15:56:23 +0000 Message-Id: <20221209155623.29147-5-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221209155623.29147-1-biju.das.jz@bp.renesas.com> References: <20221209155623.29147-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Some platforms(for eg: RZ/V2M EVK) does not have interrupt pin connected to HD3SS3220. Add polling support for role detection. Signed-off-by: Biju Das --- drivers/usb/typec/hd3ss3220.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/usb/typec/hd3ss3220.c b/drivers/usb/typec/hd3ss3220.c index 666a93f7ec65..9894fa96cc5f 100644 --- a/drivers/usb/typec/hd3ss3220.c +++ b/drivers/usb/typec/hd3ss3220.c @@ -14,6 +14,7 @@ #include #include #include +#include #define HD3SS3220_REG_CN_STAT_CTRL 0x09 #define HD3SS3220_REG_GEN_CTRL 0x0A @@ -37,6 +38,9 @@ struct hd3ss3220 { struct regmap *regmap; struct usb_role_switch *role_sw; struct typec_port *port; + struct delayed_work output_poll_work; + enum usb_role role_state; + bool poll; }; static int hd3ss3220_set_source_pref(struct hd3ss3220 *hd3ss3220, int src_pref) @@ -118,6 +122,22 @@ static void hd3ss3220_set_role(struct hd3ss3220 *hd3ss3220) default: break; } + + hd3ss3220->role_state = role_state; +} + +static void output_poll_execute(struct work_struct *work) +{ + struct delayed_work *delayed_work = to_delayed_work(work); + struct hd3ss3220 *hd3ss3220 = container_of(delayed_work, + struct hd3ss3220, + output_poll_work); + enum usb_role role_state = hd3ss3220_get_attached_state(hd3ss3220); + + if (hd3ss3220->role_state != role_state) + hd3ss3220_set_role(hd3ss3220); + + schedule_delayed_work(&hd3ss3220->output_poll_work, HZ); } static irqreturn_t hd3ss3220_irq(struct hd3ss3220 *hd3ss3220) @@ -227,6 +247,9 @@ static int hd3ss3220_probe(struct i2c_client *client, "hd3ss3220", &client->dev); if (ret) goto err_unreg_port; + } else { + INIT_DELAYED_WORK(&hd3ss3220->output_poll_work, output_poll_execute); + hd3ss3220->poll = true; } ret = i2c_smbus_read_byte_data(client, HD3SS3220_REG_DEV_REV); @@ -235,6 +258,9 @@ static int hd3ss3220_probe(struct i2c_client *client, fwnode_handle_put(connector); + if (hd3ss3220->poll) + schedule_delayed_work(&hd3ss3220->output_poll_work, HZ); + dev_info(&client->dev, "probed revision=0x%x\n", ret); return 0; @@ -252,6 +278,9 @@ static void hd3ss3220_remove(struct i2c_client *client) { struct hd3ss3220 *hd3ss3220 = i2c_get_clientdata(client); + if (hd3ss3220->poll) + cancel_delayed_work_sync(&hd3ss3220->output_poll_work); + typec_unregister_port(hd3ss3220->port); usb_role_switch_put(hd3ss3220->role_sw); }