From patchwork Wed Mar 22 09:31:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wang X-Patchwork-Id: 13183726 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 1901CC6FD1C for ; Wed, 22 Mar 2023 09:31:50 +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: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:In-Reply-To:References: List-Owner; bh=ozuIjxHWwzyG8vynvspKGK7Btp/qYyT1MlV8Whi/P3s=; b=nNLiGY/OltKgGG lT+wypihXTlYHQrCBm4TYWg5XUcCWqzbtADu2pe0COnw2QvE180b9rUBEf+6MZNxRVjPMsOL+i2l+ JZPIO97nMRNwxVboogl5oT6eMGeK0RoXe7vGGYuH6WtJ4APNSF+jeSxX2sBUiLOXo6pTEtmnoD1cT W4/O6dhF14rUofTUXjra/ypvO1gpZufJIEYek78SCcYj9rILPLQIHvu2gMbOpVbON5WwZJwwGcush V1sQ56Yz3WH+PQYheF52sEzMMcN5bcKvCFQkEQBDvp+g7m/yyMywaLDqdwu3ZOX0r6bG92n0tU/Q4 J6oaGpBsYulxdT6UAk8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peuoi-00FQnP-0t; Wed, 22 Mar 2023 09:31:36 +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 1peuoe-00FQkc-1z for linux-rockchip@lists.infradead.org; Wed, 22 Mar 2023 09:31:34 +0000 Received: from localhost.localdomain (unknown [58.22.7.114]) by mail-m11879.qiye.163.com (Hmail) with ESMTPA id 75C95680250; Wed, 22 Mar 2023 17:31:22 +0800 (CST) From: Frank Wang To: sebastian.reichel@collabora.com, 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 v3] usb: typec: tcpm: add get max power support Date: Wed, 22 Mar 2023 17:31:20 +0800 Message-Id: <20230322093120.8686-1-frank.wang@rock-chips.com> X-Mailer: git-send-email 2.17.1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZQxhKQ1ZIQ0lLT0oYGE1CHU5VEwETFh oSFyQUDg9ZV1kYEgtZQVlOQ1VJSVVMVUpKT1lXWRYaDxIVHRRZQVlPS0hVSkpLSEpMVUpLS1VLWQ Y+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Oi46DBw6Lj0JNRQBMzQWOSsL AR0wCylVSlVKTUxCT0xMT0NISE5IVTMWGhIXVR0JGhUQVQwaFRw7CRQYEFYYExILCFUYFBZFWVdZ EgtZQVlOQ1VJSVVMVUpKT1lXWQgBWUFJQ0NPNwY+ X-HM-Tid: 0a8708a8a5532eb5kusn75c95680250 X-HM-MType: 1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230322_023132_812951_903A0FB8 X-CRM114-Status: UNSURE ( 9.78 ) X-CRM114-Notice: Please train this message. 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..db2636ef511bc 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_uw = 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; + max_src_uw = tmp > max_src_uw ? tmp : max_src_uw; + } + } + + val->intval = max_src_uw; + 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;