From patchwork Thu Nov 7 11:43:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oliver Facklam via B4 Relay X-Patchwork-Id: 841688 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 293DB20C47C; Thu, 7 Nov 2024 11:44:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730979841; cv=none; b=LWkKgQBXGwKqGl/6fG0kFB+EfVnA/I/KM5nTOSQ+w9q5jWyDLHkt1eTYstGbAlLHnIVP3yXqeVjq0cIM3TFC4myudDHOlUdbmBRceanHK3YtTvbDq9x4kEfUfuNcc+NR9q53oKLrdFGHHt+5Qset+96Scj7AaT6DC+XfH44MX5o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730979841; c=relaxed/simple; bh=jc3lmpbmP5zBXZt8ih0/6VWlSDJK5i7MOpw2pO3/b8o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=fbNFemZtpO+DaC+OCAjwySZQY27hO8/a/Wf+wHjMb888d+A3UBG1d30+E5+TYrjhlY4d83B4duTFQITx9K41BmKYO2NHqhuHEQNQYSIgigpMFm3FMGFmqjDlbrEmec3Jl7xAYfMwohSqxRJKoYKZKyfGZ16Kdm7f+f7ld+CaM8w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kg4qq+Ce; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kg4qq+Ce" Received: by smtp.kernel.org (Postfix) with ESMTPS id B86B9C4CED6; Thu, 7 Nov 2024 11:44:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730979840; bh=jc3lmpbmP5zBXZt8ih0/6VWlSDJK5i7MOpw2pO3/b8o=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=kg4qq+Ce9ESWaVmIvB8/GoLECVMz7jEosLB0Ke138JhJhMN98CBlo79aKPBuHxKCE J3c0g4J8q4dps2pHc5ZZtiTsOPZR7Mz6usgbE8A3j+QJ9TqnrN6CvKLXw6TqzUuG75 3HOS1dST9ZwICGFO0naAZtUP5/uRr0GvGrepsbM8AmTVE2F+GgZGWUD53meWwioCgL zqrBUErvdqgeN2Ujv/EaBjGgkoUWb6yVmGGO/3ou0EUWYGkpZ5Ug5H7Igk01t66OM1 Cr/x/RgFuT+ZEB/d9wIf9MylORW2M7q1Tn0m3250LPQzEaI5mnMfyZLDFr5LuCXxC+ WlAzR2K34zDsA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id AFA57D43350; Thu, 7 Nov 2024 11:44:00 +0000 (UTC) From: Oliver Facklam via B4 Relay Date: Thu, 07 Nov 2024 12:43:30 +0100 Subject: [PATCH 4/4] usb: typec: hd3ss3220: support configuring role preference based on fwnode property and typec_operation Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241107-usb-typec-controller-enhancements-v1-4-3886c1acced2@zuehlke.com> References: <20241107-usb-typec-controller-enhancements-v1-0-3886c1acced2@zuehlke.com> In-Reply-To: <20241107-usb-typec-controller-enhancements-v1-0-3886c1acced2@zuehlke.com> To: Heikki Krogerus , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Oliver Facklam , Benedict von Heyl , Mathis Foerst , Michael Glettig X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1730979838; l=4311; i=oliver.facklam@zuehlke.com; s=20241107; h=from:subject:message-id; bh=XHflV9vRXXwBeMjU3taqyyigWiet9h+BzR1A+QQQN2o=; b=MFk/3IkAL+g3y3G9e9CD/xiHKOIjDVMyQXkvcAryZBJ1PRXy33ovhS2wklRVWrl80ziI1E09f baLbkB5WtO6AnNm3yhMnw9BrdVLQ+NP2KXzbzly+3rr1u/WZZEIMm9v X-Developer-Key: i=oliver.facklam@zuehlke.com; a=ed25519; pk=bMlB+nko+ewJHQJLwq2t26VDbmRmNDPr/1woleqp7Lw= X-Endpoint-Received: by B4 Relay for oliver.facklam@zuehlke.com/20241107 with auth_id=271 X-Original-From: Oliver Facklam Reply-To: oliver.facklam@zuehlke.com From: Oliver Facklam The TI HD3SS3220 Type-C controller supports configuring its role preference when operating as a dual-role port through the SOURCE_PREF field of the General Control Register. The previous driver behavior was to set the role preference based on the dr_set typec_operation. However, the controller does not support swapping the data role on an active connection due to its lack of Power Delivery support. Remove previous dr_set typec_operation, and support setting the role preference based on the corresponding fwnode property, as well as the try_role typec_operation. Signed-off-by: Oliver Facklam --- drivers/usb/typec/hd3ss3220.c | 50 +++++++++++++++++++++---------------------- 1 file changed, 25 insertions(+), 25 deletions(-) diff --git a/drivers/usb/typec/hd3ss3220.c b/drivers/usb/typec/hd3ss3220.c index 357c4e9491a2e3047046db91858ac98ab484ef62..c6922989a3cd04fd878e37888856ac1b9c5135ec 100644 --- a/drivers/usb/typec/hd3ss3220.c +++ b/drivers/usb/typec/hd3ss3220.c @@ -127,8 +127,25 @@ static int hd3ss3220_set_port_type(struct hd3ss3220 *hd3ss3220, int type) return err; } -static int hd3ss3220_set_source_pref(struct hd3ss3220 *hd3ss3220, int src_pref) +static int hd3ss3220_set_source_pref(struct hd3ss3220 *hd3ss3220, int prefer_role) { + int src_pref; + + switch (prefer_role) { + case TYPEC_NO_PREFERRED_ROLE: + src_pref = HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_DEFAULT; + break; + case TYPEC_SINK: + src_pref = HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_TRY_SNK; + break; + case TYPEC_SOURCE: + src_pref = HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_TRY_SRC; + break; + default: + dev_err(hd3ss3220->dev, "bad role preference: %d\n", prefer_role); + return -EINVAL; + } + return regmap_update_bits(hd3ss3220->regmap, HD3SS3220_REG_GEN_CTRL, HD3SS3220_REG_GEN_CTRL_SRC_PREF_MASK, src_pref); @@ -160,27 +177,11 @@ static enum usb_role hd3ss3220_get_attached_state(struct hd3ss3220 *hd3ss3220) return attached_state; } -static int hd3ss3220_dr_set(struct typec_port *port, enum typec_data_role role) +static int hd3ss3220_try_role(struct typec_port *port, int role) { struct hd3ss3220 *hd3ss3220 = typec_get_drvdata(port); - enum usb_role role_val; - int pref, ret = 0; - if (role == TYPEC_HOST) { - role_val = USB_ROLE_HOST; - pref = HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_TRY_SRC; - } else { - role_val = USB_ROLE_DEVICE; - pref = HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_TRY_SNK; - } - - ret = hd3ss3220_set_source_pref(hd3ss3220, pref); - usleep_range(10, 100); - - usb_role_switch_set_role(hd3ss3220->role_sw, role_val); - typec_set_data_role(hd3ss3220->port, role); - - return ret; + return hd3ss3220_set_source_pref(hd3ss3220, role); } static int hd3ss3220_port_type_set(struct typec_port *port, enum typec_port_type type) @@ -191,7 +192,7 @@ static int hd3ss3220_port_type_set(struct typec_port *port, enum typec_port_type } static const struct typec_operations hd3ss3220_ops = { - .dr_set = hd3ss3220_dr_set, + .try_role = hd3ss3220_try_role, .port_type_set = hd3ss3220_port_type_set, }; @@ -200,9 +201,6 @@ static void hd3ss3220_set_role(struct hd3ss3220 *hd3ss3220) enum usb_role role_state = hd3ss3220_get_attached_state(hd3ss3220); usb_role_switch_set_role(hd3ss3220->role_sw, role_state); - if (role_state == USB_ROLE_NONE) - hd3ss3220_set_source_pref(hd3ss3220, - HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_DEFAULT); switch (role_state) { case USB_ROLE_HOST: @@ -297,8 +295,6 @@ static int hd3ss3220_probe(struct i2c_client *client) if (IS_ERR(hd3ss3220->regmap)) return PTR_ERR(hd3ss3220->regmap); - hd3ss3220_set_source_pref(hd3ss3220, - HD3SS3220_REG_GEN_CTRL_SRC_PREF_DRP_DEFAULT); /* For backward compatibility check the connector child node first */ connector = device_get_named_child_node(hd3ss3220->dev, "connector"); if (connector) { @@ -323,6 +319,10 @@ static int hd3ss3220_probe(struct i2c_client *client) if (ret) goto err_put_role; + ret = hd3ss3220_set_source_pref(hd3ss3220, typec_cap.prefer_role); + if (ret < 0) + goto err_put_role; + ret = hd3ss3220_set_port_type(hd3ss3220, typec_cap.type); if (ret < 0) goto err_put_role;