From patchwork Fri Mar 17 10:42:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alvin_=C5=A0ipraga?= X-Patchwork-Id: 664719 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 E779BC7618B for ; Fri, 17 Mar 2023 10:43:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230218AbjCQKm6 (ORCPT ); Fri, 17 Mar 2023 06:42:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230077AbjCQKmv (ORCPT ); Fri, 17 Mar 2023 06:42:51 -0400 Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 11C63B4F65 for ; Fri, 17 Mar 2023 03:42:48 -0700 (PDT) Received: by mail-ed1-x529.google.com with SMTP id eg48so18463053edb.13 for ; Fri, 17 Mar 2023 03:42:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pqrs.dk; s=google; t=1679049766; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=KkfNtTihu45jzEqQQleEFOaEIxvSCDmLNTTKMA47LCc=; b=T0xpT7kvD9ovyo6CNPlz8NeB0CSRIN6ehsEtQsnCvIKUt8asgWqjii0ZmQAi7dBTwd OQxFN1LInWJuVDrtbp1tkap80Tiu5gr9/XQ9xp/S6ZfdmUgnzWaP1kC/FitY/2x6jyV6 neJSMovfubqclwIfM0MCjhmptZ4AqutElCThU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679049766; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=KkfNtTihu45jzEqQQleEFOaEIxvSCDmLNTTKMA47LCc=; b=APGCNrEFdHOhMN5NGaB9DlxPHDuy7Sw99qMMv3BOL63UPJiXgJ5EMMO5E40PLuCa02 DGICDGSJvCBLt8qqAVC0bLKDAxtRpyJJ4kBcrOg6jH1MYgCd/zM2yOUfrLWLXhYPA7vv 4SztwS424whAOft3WhBTSgcCiXWarLjAQZ0LOPKxO5iq1HYGdSvzD8cdgXOHw1rYOGmK yhWWA1WvglgvPHQyLL6ubbeIM1QYaKKFHK1Y82XmWDhfK16g0P6F/XE8AX8u8iquGtLj LN8Wu0Z4My45NbyNXu+Tbct9gnNPSntbYN+KOSXKk5cubcdhc8UBXgDt8ArDmzktrXz5 /CNg== X-Gm-Message-State: AO0yUKX3o3lpQca+m1YaVgijdOATu17KNvD9RqbKOVVxBfT30xBNxRyB DaKndDVwvatX30oYalodaWkLHg== X-Google-Smtp-Source: AK7set++hMIxaZKWRaCBbsvPOCseXshHFD/kENQSovsW16TP8BG+38vlEH+SAmQpsYBACT3jw68Lwg== X-Received: by 2002:a17:906:6a28:b0:930:ba36:2211 with SMTP id qw40-20020a1709066a2800b00930ba362211mr6837498ejc.0.1679049766698; Fri, 17 Mar 2023 03:42:46 -0700 (PDT) Received: from localhost.localdomain ([193.89.194.60]) by smtp.gmail.com with ESMTPSA id e5-20020a170906314500b009236ae669ecsm816144eje.191.2023.03.17.03.42.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 17 Mar 2023 03:42:46 -0700 (PDT) From: =?utf-8?q?Alvin_=C5=A0ipraga?= To: Heikki Krogerus , Greg Kroah-Hartman , MyungJoo Ham , Chanwoo Choi Cc: linux-usb@vger.kernel.org, =?utf-8?q?Alvin_=C5=A0ipraga?= , linux-kernel@vger.kernel.org Subject: [PATCH 2/2] extcon: usbc-tusb320: add usb_role_switch support Date: Fri, 17 Mar 2023 11:42:28 +0100 Message-Id: <20230317104229.1392742-2-alvin@pqrs.dk> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230317104229.1392742-1-alvin@pqrs.dk> References: <20230317104229.1392742-1-alvin@pqrs.dk> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Alvin Šipraga The connector child node of the TUSB320 device might be linked with a USB OTG controller with USB role switch capability. Add driver support for detecting a usb_role_switch and setting its state in the typec interrupt handler. This follows similar practice in other drivers in the typec subsystem, which this extcon driver can opt-in to. Signed-off-by: Alvin Šipraga --- v2: remove unused variable as reported by kernel test robot --- drivers/extcon/extcon-usbc-tusb320.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/drivers/extcon/extcon-usbc-tusb320.c b/drivers/extcon/extcon-usbc-tusb320.c index 882d1f48495e..cc2d0ac7c5f6 100644 --- a/drivers/extcon/extcon-usbc-tusb320.c +++ b/drivers/extcon/extcon-usbc-tusb320.c @@ -16,6 +16,7 @@ #include #include #include +#include #define TUSB320_REG8 0x8 #define TUSB320_REG8_CURRENT_MODE_ADVERTISE GENMASK(7, 6) @@ -80,6 +81,7 @@ struct tusb320_priv { enum typec_port_type port_type; enum typec_pwr_opmode pwr_opmode; struct fwnode_handle *connector_fwnode; + struct usb_role_switch *role_sw; }; static const char * const tusb_attached_states[] = { @@ -278,6 +280,7 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) struct typec_port *port = priv->port; struct device *dev = priv->dev; int typec_mode; + enum usb_role usb_role; enum typec_role pwr_role; enum typec_data_role data_role; u8 state, mode, accessory; @@ -300,11 +303,13 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) switch (state) { case TUSB320_ATTACHED_STATE_DFP: typec_mode = TYPEC_MODE_USB2; + usb_role = USB_ROLE_HOST; pwr_role = TYPEC_SOURCE; data_role = TYPEC_HOST; break; case TUSB320_ATTACHED_STATE_UFP: typec_mode = TYPEC_MODE_USB2; + usb_role = USB_ROLE_DEVICE; pwr_role = TYPEC_SINK; data_role = TYPEC_DEVICE; break; @@ -316,6 +321,7 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) if (accessory == TUSB320_REG8_ACCESSORY_CONNECTED_AUDIO || accessory == TUSB320_REG8_ACCESSORY_CONNECTED_ACHRG) { typec_mode = TYPEC_MODE_AUDIO; + usb_role = USB_ROLE_NONE; pwr_role = TYPEC_SINK; data_role = TYPEC_DEVICE; break; @@ -323,12 +329,14 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) TUSB320_REG8_ACCESSORY_CONNECTED_DBGDFP) { typec_mode = TYPEC_MODE_DEBUG; pwr_role = TYPEC_SOURCE; + usb_role = USB_ROLE_HOST; data_role = TYPEC_HOST; break; } else if (accessory == TUSB320_REG8_ACCESSORY_CONNECTED_DBGUFP) { typec_mode = TYPEC_MODE_DEBUG; pwr_role = TYPEC_SINK; + usb_role = USB_ROLE_DEVICE; data_role = TYPEC_DEVICE; break; } @@ -339,6 +347,7 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) fallthrough; default: typec_mode = TYPEC_MODE_USB2; + usb_role = USB_ROLE_NONE; pwr_role = TYPEC_SINK; data_role = TYPEC_DEVICE; break; @@ -348,6 +357,7 @@ static void tusb320_typec_irq_handler(struct tusb320_priv *priv, u8 reg9) typec_set_pwr_role(port, pwr_role); typec_set_data_role(port, data_role); typec_set_mode(port, typec_mode); + usb_role_switch_set_role(priv->role_sw, usb_role); mode = FIELD_GET(TUSB320_REG8_CURRENT_MODE_DETECT, reg8); if (mode == TUSB320_REG8_CURRENT_MODE_DETECT_DEF) @@ -472,10 +482,20 @@ static int tusb320_typec_probe(struct i2c_client *client, goto err_put; } + /* Find any optional USB role switch that needs reporting to */ + priv->role_sw = fwnode_usb_role_switch_get(connector); + if (IS_ERR(priv->role_sw)) { + ret = PTR_ERR(priv->role_sw); + goto err_unreg; + } + priv->connector_fwnode = connector; return 0; +err_unreg: + typec_unregister_port(priv->port); + err_put: fwnode_handle_put(connector); @@ -484,6 +504,7 @@ static int tusb320_typec_probe(struct i2c_client *client, static void tusb320_typec_remove(struct tusb320_priv *priv) { + usb_role_switch_put(priv->role_sw); typec_unregister_port(priv->port); fwnode_handle_put(priv->connector_fwnode); }