From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f74.google.com (mail-ed1-f74.google.com [209.85.208.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 252C8276025 for ; Wed, 9 Jul 2025 13:22:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752067358; cv=none; b=gS1zIOfdfavpFUYTillEw3eoKAx160Ib9pLndD4sXKswLduGAwOuvB2AEhqU81DUw0+om6jW1Y66IMgRQDreLg0Ss6+rXycIRmh75gs4ZISC4Fuz5nhVQaTVkAtVm2iEghW+HgZbM9QaSMt45GJ89WHnDKt4PRfOZIGC2rdSxRM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752067358; c=relaxed/simple; bh=A2DoetifgDt48zV1gVs51Ud+jL1vtv986xcqbQ9S0Dc=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=AyFxWF3wxVcknFlWml+rQ68gS0GfiQE4Mep69OBzrJb1sPExQK9YvDtmX/JfX0GNu/smzz/Dmv1Ds0SIVfh5KXLEc6M06fETspkvt78vpFYXqbQ6g2vzsaVEtg257W8xEKYdfqq1cJt2wLyBW1yEXrk7EDDI4BL0Z3ejkLA+LoY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--raduvele.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=3TkQcnjo; arc=none smtp.client-ip=209.85.208.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--raduvele.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="3TkQcnjo" Received: by mail-ed1-f74.google.com with SMTP id 4fb4d7f45d1cf-60c6d568550so4814141a12.2 for ; Wed, 09 Jul 2025 06:22:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1752067354; x=1752672154; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=0POwGeVY/oBf03TkHrGLCHAo/NCqv2tLic3Xhhp3IR4=; b=3TkQcnjoHL2oWFhwzv6H6ugSWZy8jnlfi5zuluIsbr4DkpC0Pvii4IE3jmYPyAo/ON 0iVoOGbbXiB4ouZ+MYRQAKilCYHTO1Bl3rFv916QTLZnj8/Upe0m6uqMSibqLZ45vbm4 XZly4Tjoq+gs05Bkv06HCWJXnfhg1BHaMCIr7BrQhJHryJtA/3JR2astp+YvxUq3cjvF JUkoBLLEpZm4tmPQhNo7YGErlzqSMFGLKx+712xIBwpJ3T8B2pOWrM7btGkNZvpXvN8x aK1kONnGtndHzHMlwQVLWr1VTDXn8G1wyZUg9jEVy8moNH4IJ/RGHQGepP8H7S0T++je kx3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1752067354; x=1752672154; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=0POwGeVY/oBf03TkHrGLCHAo/NCqv2tLic3Xhhp3IR4=; b=N2oXoi7JMbPHYoClL3bh073ZiZjt2oRTpMDzTYN5TzXAXMGRYu5vKcozmi5I0vK6L4 BokJ0AU5wvzz0Mj5tLBlMojpp19iQN9RjTOTPs9RdhCZvYfl0eRFnCLQTomhDaoVVTEX WfwlvF4recmBZTvX01fWAPF9taRW4cAVrjgJOggom9ZpDGmKmF1mb28wj7d4ICWeiSz2 fvQfIaKl47RcJNwIJtjWxyFS/fzajav4JrmMlI+/JUR9xeHhPpuisSVb+j1sVOkm66e0 tiEmBOo+ZALsVeDTGXO9K5DQuAnhNAh9decViAo3yY3mn2S8dRsOqlC9VilwAJHvZzY6 EonA== X-Forwarded-Encrypted: i=1; AJvYcCWCEtxTOULzTyutJ4sg1zImdPWz+Ztrq9aECQ0DfVFvQ/t1Q11/P0SMrqhmlXajPfDY0IcaF/qKKqfTXgE=@vger.kernel.org X-Gm-Message-State: AOJu0YwmHweX2qZZbDpZsYSbodqzBJROOj0X5RzSyN6mUtcnATLpYc+m KhahpgX5gtmZ9wcWhHmAJU8jP+JXRhvJsaOxVVDICuEyduIwcVXkzfNnSsoxxFZBnt/NZq/GFfv N3kr+88vOsPbUpg== X-Google-Smtp-Source: AGHT+IGZlrYoPqnzfB61mLqVQH6I9T9xqiZxhmKbJTnu8SwepKkIF9hCJoXZOBCPN7dspanLKivlSMfeN8QSIw== X-Received: from edbdn22.prod.google.com ([2002:a05:6402:22f6:b0:60c:a42b:25c3]) (user=raduvele job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:35d6:b0:608:f54b:5c81 with SMTP id 4fb4d7f45d1cf-611a65ab957mr2204701a12.1.1752067354375; Wed, 09 Jul 2025 06:22:34 -0700 (PDT) Date: Wed, 9 Jul 2025 13:22:31 +0000 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.50.0.727.gbf7dc18ff4-goog Message-ID: <20250709132232.2475172-1-raduvele@google.com> Subject: [PATCH v1 1/2] platform/chrome: cros_ec_typec: Add role swap ops From: Radu Vele To: Benson Leung , Abhishek Pandit-Subedi , Jameson Thies , Andrei Kuchynski , Tzung-Bi Shih Cc: chrome-platform@lists.linux.dev, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" From: Abhishek Pandit-Subedi Add the pr_set and dr_set typec_operations to registered typec ports. This enables sysfs to control power and data role when the port is capable of doing so. Signed-off-by: Abhishek Pandit-Subedi Co-developed-by: Radu Vele Signed-off-by: Radu Vele --- drivers/platform/chrome/cros_ec_typec.c | 77 ++++++++++++++++++++++++- 1 file changed, 76 insertions(+), 1 deletion(-) diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 7678e3d05fd3..289429ef959f 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -58,8 +58,83 @@ static int cros_typec_enter_usb_mode(struct typec_port *tc_port, enum usb_mode m &req, sizeof(req), NULL, 0); } +static int cros_typec_perform_role_swap(struct typec_port *tc_port, int target_role, u8 swap_type) +{ + struct cros_typec_port *port = typec_get_drvdata(tc_port); + struct cros_typec_data *data = port->typec_data; + struct ec_response_usb_pd_control_v2 resp; + struct ec_params_usb_pd_control req; + int role, ret; + + /* Must be at least v1 to support role swap. */ + if (!data->pd_ctrl_ver) + return -EOPNOTSUPP; + + /* First query the state */ + req.port = port->port_num; + req.role = USB_PD_CTRL_ROLE_NO_CHANGE; + req.mux = USB_PD_CTRL_MUX_NO_CHANGE; + req.swap = USB_PD_CTRL_SWAP_NONE; + + ret = cros_ec_cmd(data->ec, data->pd_ctrl_ver, EC_CMD_USB_PD_CONTROL, + &req, sizeof(req), &resp, sizeof(resp)); + if (ret < 0) + return ret; + + switch (swap_type) { + case USB_PD_CTRL_SWAP_DATA: + role = (resp.role & PD_CTRL_RESP_ROLE_DATA) ? TYPEC_HOST : + TYPEC_DEVICE; + break; + case USB_PD_CTRL_SWAP_POWER: + role = (resp.role & PD_CTRL_RESP_ROLE_POWER) ? TYPEC_SOURCE : + TYPEC_SINK; + break; + default: + dev_warn(data->dev, "Unsupported role swap type %d", swap_type); + return -EOPNOTSUPP; + } + + if (role == target_role) + return 0; + + req.swap = swap_type; + ret = cros_ec_cmd(data->ec, data->pd_ctrl_ver, EC_CMD_USB_PD_CONTROL, + &req, sizeof(req), &resp, sizeof(resp)); + + if (ret < 0) + return ret; + + switch (swap_type) { + case USB_PD_CTRL_SWAP_DATA: + typec_set_data_role(tc_port, resp.role & PD_CTRL_RESP_ROLE_DATA ? + TYPEC_HOST : + TYPEC_DEVICE); + break; + case USB_PD_CTRL_SWAP_POWER: + typec_set_pwr_role(tc_port, resp.role & PD_CTRL_RESP_ROLE_POWER ? + TYPEC_SOURCE : + TYPEC_SINK); + break; + } + + return 0; +} + +static int cros_typec_dr_swap(struct typec_port *port, enum typec_data_role role) +{ + return cros_typec_perform_role_swap(port, role, USB_PD_CTRL_SWAP_DATA); +} + +static int cros_typec_pr_swap(struct typec_port *port, enum typec_role role) +{ + return cros_typec_perform_role_swap(port, role, USB_PD_CTRL_SWAP_POWER); +} + static const struct typec_operations cros_typec_usb_mode_ops = { - .enter_usb_mode = cros_typec_enter_usb_mode + .enter_usb_mode = cros_typec_enter_usb_mode, + .dr_set = cros_typec_dr_swap, + .pr_set = cros_typec_pr_swap }; static int cros_typec_parse_port_props(struct typec_capability *cap, -- 2.50.0.727.gbf7dc18ff4-goog