From patchwork Sun Mar 10 16:24:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lubomir Rintel X-Patchwork-Id: 10846363 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 399DC6C2 for ; Sun, 10 Mar 2019 16:25:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 25EB928DD5 for ; Sun, 10 Mar 2019 16:25:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1A2DB28E2A; Sun, 10 Mar 2019 16:25:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 887C828DD5 for ; Sun, 10 Mar 2019 16:25:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726741AbfCJQY7 (ORCPT ); Sun, 10 Mar 2019 12:24:59 -0400 Received: from shell.v3.sk ([90.176.6.54]:45130 "EHLO shell.v3.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726716AbfCJQY7 (ORCPT ); Sun, 10 Mar 2019 12:24:59 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 07B0A102CAD; Sun, 10 Mar 2019 17:24:56 +0100 (CET) Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id QNbaK_JPbRam; Sun, 10 Mar 2019 17:24:41 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 4F875102CB8; Sun, 10 Mar 2019 17:24:34 +0100 (CET) X-Virus-Scanned: amavisd-new at zimbra.v3.sk Received: from shell.v3.sk ([127.0.0.1]) by localhost (zimbra.v3.sk [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id dp5g__NxlNZd; Sun, 10 Mar 2019 17:24:31 +0100 (CET) Received: from nedofet.lan (ip-89-102-31-34.net.upcbroadband.cz [89.102.31.34]) by zimbra.v3.sk (Postfix) with ESMTPSA id 0B69E102CA8; Sun, 10 Mar 2019 17:24:31 +0100 (CET) From: Lubomir Rintel To: Sebastian Reichel Cc: Darren Hart , Rob Herring , Mark Rutland , x86@kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Lubomir Rintel , Pavel Machek , Sebastian Reichel Subject: [PATCH 08/10] power: supply: olpc_battery: Avoid using platform_info Date: Sun, 10 Mar 2019 17:24:17 +0100 Message-Id: <20190310162419.11861-9-lkundrak@v3.sk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190310162419.11861-1-lkundrak@v3.sk> References: <20190310162419.11861-1-lkundrak@v3.sk> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This wouldn't work on the DT-based ARM platform. Let's read the EC version directly from the EC driver instead. This removes x86 specific bits that would prevent this driver from being used with the EC of ARM-based OLPC XO 1.75. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Reviewed-by: Sebastian Reichel --- Changes since v5: - Turn new_proto into a bool Changes since v2: - Move the priv data allocation hunk from this patch to a proper place Changes since v1: - Use uint8_t instead of unsigned char [1] for ecver drivers/power/supply/olpc_battery.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index d83c77c2a0ec..8be44c717d85 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -57,6 +57,7 @@ struct olpc_battery_data { struct power_supply *olpc_ac; struct power_supply *olpc_bat; char bat_serial[17]; + bool new_proto; }; /********************************************************************* @@ -100,7 +101,7 @@ static const struct power_supply_desc olpc_ac_desc = { static int olpc_bat_get_status(struct olpc_battery_data *data, union power_supply_propval *val, uint8_t ec_byte) { - if (olpc_platform_info.ecver > 0x44) { + if (data->new_proto) { if (ec_byte & (BAT_STAT_CHARGING | BAT_STAT_TRICKLE)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (ec_byte & BAT_STAT_DISCHARGING) @@ -608,6 +609,7 @@ static int olpc_battery_probe(struct platform_device *pdev) struct power_supply_config psy_cfg = {}; struct olpc_battery_data *data; uint8_t status; + uint8_t ecver; int ret; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); @@ -615,13 +617,21 @@ static int olpc_battery_probe(struct platform_device *pdev) return -ENOMEM; platform_set_drvdata(pdev, data); - /* - * We've seen a number of EC protocol changes; this driver requires - * the latest EC protocol, supported by 0x44 and above. - */ - if (olpc_platform_info.ecver < 0x44) { + /* See if the EC is already there and get the EC revision */ + ret = olpc_ec_cmd(EC_FIRMWARE_REV, NULL, 0, &ecver, 1); + if (ret) + return ret; + + if (ecver > 0x44) { + /* XO 1 or 1.5 with a new EC firmware. */ + data->new_proto = true; + } else if (ecver < 0x44) { + /* + * We've seen a number of EC protocol changes; this driver + * requires the latest EC protocol, supported by 0x44 and above. + */ printk(KERN_NOTICE "OLPC EC version 0x%02x too old for " - "battery driver.\n", olpc_platform_info.ecver); + "battery driver.\n", ecver); return -ENXIO; }