From patchwork Mon Mar 20 10:07:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wang X-Patchwork-Id: 13180882 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 E9BE8C6FD1D for ; Mon, 20 Mar 2023 10:07:40 +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:References:In-Reply-To: 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: List-Owner; bh=MnLpExemENijyMntFoGbte0ERVBjZH4001PQq5hqNHw=; b=G0rinFst6qLrwY 60SsM7iOFRpZ4GAGoB9BWBbwOdW0vLqOKjNCa2lIEZQkajIkq11xoeewPG+6fwRdbiJ4SWr29DDBr gawCUZO4tDe7yLN5fKIhezwsxUswLvob+HWZOQ6r1+uUYtLmgsyLSY/vY5aFIOesh6rCTvn5vCUwZ rejlCNzoqulbQtuQ6BMy76p9ztiXVOAotb5uhnSbelii3ME/H1+PHvW54wWSsmrWq58ZxzxJuzNhm 5N3THYhwSJGZ+vcrdYGQlHN6VjjsJJL2i9qltnV6vhFhKnVEYyMW7mRlOz1q/mHgRJg7dUm+OjipO gxzpRn02hFPpuqe9/jTw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peCQM-008Zcz-1t; Mon, 20 Mar 2023 10:07:30 +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 1peCQG-008ZZ7-0Z for linux-rockchip@lists.infradead.org; Mon, 20 Mar 2023 10:07:27 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11879.qiye.163.com (Hmail) with ESMTPA id 858E76802E6; Mon, 20 Mar 2023 18:07:16 +0800 (CST) From: Frank Wang To: linux@roeck-us.net, heikki.krogerus@linux.intel.com, gregkh@linuxfoundation.org, 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: [PATCH v2 3/3] usb: typec: tcpm: add get max power support Date: Mon, 20 Mar 2023 18:07:11 +0800 Message-Id: <20230320100711.3708-4-frank.wang@rock-chips.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230320100711.3708-1-frank.wang@rock-chips.com> References: <20230320100711.3708-1-frank.wang@rock-chips.com> X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQx1KGlYYH0hOTRofGktPGkNVEwETFh oSFyQUDg9ZV1kYEgtZQVlOQ1VJSVVMVUpKT1lXWRYaDxIVHRRZQVlPS0hVSkpLSEpMVUpLS1VLWQ Y+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6NDo6SQw5Qj0OCxFLSj0LHzUW HSpPCTZVSlVKTUxCSEtNQ0hMTUtDVTMWGhIXVR0JGhUQVQwaFRw7CRQYEFYYExILCFUYFBZFWVdZ EgtZQVlOQ1VJSVVMVUpKT1lXWQgBWUFIS05NNwY+ X-HM-Tid: 0a86fe7ccb902eb5kusn858e76802e6 X-HM-MType: 1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_030724_375667_A83181FD X-CRM114-Status: GOOD ( 10.29 ) 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 Traverse fixed pdos to calculate the maximum power that the charger can provide, and it can be get by POWER_SUPPLY_PROP_INPUT_POWER_LIMIT property. Signed-off-by: Frank Wang --- drivers/usb/typec/tcpm/tcpm.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 13830b5e2d09f..d6ad3cdf9e4af 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -6320,6 +6320,27 @@ static int tcpm_psy_get_current_now(struct tcpm_port *port, return 0; } +static int tcpm_psy_get_input_power_limit(struct tcpm_port *port, + union power_supply_propval *val) +{ + unsigned int src_mv, src_ma, max_src_mw = 0; + unsigned int i, tmp; + + for (i = 0; i < port->nr_source_caps; i++) { + u32 pdo = port->source_caps[i]; + + if (pdo_type(pdo) == PDO_TYPE_FIXED) { + src_mv = pdo_fixed_voltage(pdo); + src_ma = pdo_max_current(pdo); + tmp = src_mv * src_ma / 1000; + max_src_mw = tmp > max_src_mw ? tmp : max_src_mw; + } + } + + val->intval = max_src_mw; + return 0; +} + static int tcpm_psy_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) @@ -6349,6 +6370,9 @@ static int tcpm_psy_get_prop(struct power_supply *psy, case POWER_SUPPLY_PROP_CURRENT_NOW: ret = tcpm_psy_get_current_now(port, val); break; + case POWER_SUPPLY_PROP_INPUT_POWER_LIMIT: + tcpm_psy_get_input_power_limit(port, val); + break; default: ret = -EINVAL; break;