From mboxrd@z Thu Jan 1 00:00:00 1970 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 D4787EB64D7 for ; Mon, 26 Jun 2023 08:39:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230195AbjFZIjK (ORCPT ); Mon, 26 Jun 2023 04:39:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229479AbjFZIjH (ORCPT ); Mon, 26 Jun 2023 04:39:07 -0400 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 477221A4; Mon, 26 Jun 2023 01:39:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687768746; x=1719304746; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=G+bzOM4xppYQ3XDthN1Saehe84ye48XnjIYxuz/qNiA=; b=EqBVUeaeQekb2UfK6rpltBGAkCX6vwEwpqg7szRVXEHZRMTcv/VD5+3D zxBNUf6V6FrhkYUnRl2Ce4QfuY0BbwO1+P36tj1mqHiD/Z1T45dG+qFPo eqNOqlmMmG2McZjO9joxls9c0LC2Hi2HrMX6s5S0xZR96nWTmbGXGwG93 Qdeb3w9c219nLg9orWowqHphJ6xPYJkCNJ53t0O7egKrAVMnAv78pKyua gxhHK1xOEsrJuUnhRmPozXij+hxG0FOVStWjW1tEsALpnFXp8J929OTLE f58Y9EzkxpytT1nkx7x5KbcEMzQrijlewnIehnE9ooafk4YOWGDyzMwrm w==; X-IronPort-AV: E=McAfee;i="6600,9927,10752"; a="447596759" X-IronPort-AV: E=Sophos;i="6.01,159,1684825200"; d="scan'208";a="447596759" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jun 2023 01:39:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10752"; a="860607441" X-IronPort-AV: E=Sophos;i="6.01,159,1684825200"; d="scan'208";a="860607441" Received: from kuha.fi.intel.com ([10.237.72.185]) by fmsmga001.fm.intel.com with SMTP; 26 Jun 2023 01:39:01 -0700 Received: by kuha.fi.intel.com (sSMTP sendmail emulation); Mon, 26 Jun 2023 11:39:01 +0300 Date: Mon, 26 Jun 2023 11:39:01 +0300 From: Heikki Krogerus To: Frank Wang Cc: linux@roeck-us.net, gregkh@linuxfoundation.org, sebastian.reichel@collabora.com, heiko@sntech.de, 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 Subject: Re: [v4,2/2] usb: typec: tcpm: add get max power support Message-ID: References: <20230616075241.27690-1-frank.wang@rock-chips.com> <20230616075241.27690-2-frank.wang@rock-chips.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230616075241.27690-2-frank.wang@rock-chips.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Fri, Jun 16, 2023 at 03:52:41PM +0800, Frank Wang wrote: > 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 Acked-by: Heikki Krogerus > --- > Changelog: > v4: > - No change > > v3: > - Use Microwatts instead of Milliwatts to follow the ABI, commented by Sebastian Reichel. > > v2: > - No change > > v1: > - https://patchwork.kernel.org/project/linux-usb/patch/20230313025843.17162-4-frank.wang@rock-chips.com/ > > 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 9f6aaa3e70ca8..829d75ebab422 100644 > --- a/drivers/usb/typec/tcpm/tcpm.c > +++ b/drivers/usb/typec/tcpm/tcpm.c > @@ -6340,6 +6340,27 @@ 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) > @@ -6369,6 +6390,9 @@ 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; > -- > 2.17.1 -- heikki