From patchwork Mon Jan 7 18:34:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lubomir Rintel X-Patchwork-Id: 10751017 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 D190813B5 for ; Mon, 7 Jan 2019 18:36:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BFB1228989 for ; Mon, 7 Jan 2019 18:36:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B2FE2289A6; Mon, 7 Jan 2019 18:36:25 +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 4800728989 for ; Mon, 7 Jan 2019 18:36:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727555AbfAGSgS (ORCPT ); Mon, 7 Jan 2019 13:36:18 -0500 Received: from shell.v3.sk ([90.176.6.54]:44618 "EHLO shell.v3.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727938AbfAGSfu (ORCPT ); Mon, 7 Jan 2019 13:35:50 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id ECC20FFD90; Mon, 7 Jan 2019 19:35:46 +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 F3YynAZsibHH; Mon, 7 Jan 2019 19:35:22 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by zimbra.v3.sk (Postfix) with ESMTP id 032F2FFD84; Mon, 7 Jan 2019 19:34:55 +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 5l1rv04YAqRe; Mon, 7 Jan 2019 19:34:53 +0100 (CET) Received: from belphegor.brq.redhat.com (nat-pool-brq-t.redhat.com [213.175.37.10]) by zimbra.v3.sk (Postfix) with ESMTPSA id B144CFFD86; Mon, 7 Jan 2019 19:34:48 +0100 (CET) From: Lubomir Rintel To: Andy Shevchenko , Darren Hart , platform-driver-x86@vger.kernel.org Cc: James Cameron , Mark Rutland , Pavel Machek , Rob Herring , Sebastian Reichel , x86@kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Lubomir Rintel , Sebastian Reichel Subject: [PATCH v3 15/16] power: supply: olpc_battery: Avoid using platform_info Date: Mon, 7 Jan 2019 19:34:38 +0100 Message-Id: <20190107183439.50626-16-lkundrak@v3.sk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190107183439.50626-1-lkundrak@v3.sk> References: <20190107183439.50626-1-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 makes the driver no longer x86 specific. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Reviewed-by: Sebastian Reichel --- 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/Kconfig | 2 +- drivers/power/supply/olpc_battery.c | 27 ++++++++++++++++++--------- 2 files changed, 19 insertions(+), 10 deletions(-) diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index e901b9879e7e..67a3bb26da39 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -151,7 +151,7 @@ config BATTERY_PMU config BATTERY_OLPC tristate "One Laptop Per Child battery" - depends on X86_32 && OLPC + depends on OLPC help Say Y to enable support for the battery on the OLPC laptop. diff --git a/drivers/power/supply/olpc_battery.c b/drivers/power/supply/olpc_battery.c index 0c9f7ce6b26b..8ebb4284cf05 100644 --- a/drivers/power/supply/olpc_battery.c +++ b/drivers/power/supply/olpc_battery.c @@ -20,8 +20,6 @@ #include #include #include -#include - #define EC_BAT_VOLTAGE 0x10 /* uint16_t, *9.76/32, mV */ #define EC_BAT_CURRENT 0x11 /* int16_t, *15.625/120, mA */ @@ -57,6 +55,7 @@ struct olpc_battery_data { struct power_supply *olpc_ac; struct power_supply *olpc_bat; char bat_serial[17]; + int new_proto; }; /********************************************************************* @@ -100,7 +99,7 @@ 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) @@ -608,19 +607,29 @@ 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); if (!data) 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 = 1; + } 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; }