From patchwork Wed May 13 18:56:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Reichel X-Patchwork-Id: 200622 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNPARSEABLE_RELAY, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD98EC433E1 for ; Wed, 13 May 2020 18:57:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 842EB20690 for ; Wed, 13 May 2020 18:57:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390492AbgEMS5K (ORCPT ); Wed, 13 May 2020 14:57:10 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:51936 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390390AbgEMS4g (ORCPT ); Wed, 13 May 2020 14:56:36 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: sre) with ESMTPSA id BB82F2A29D3 Received: by jupiter.universe (Postfix, from userid 1000) id 8981648010B; Wed, 13 May 2020 20:56:29 +0200 (CEST) From: Sebastian Reichel To: Sebastian Reichel , Rob Herring , Greg Kroah-Hartman , "Rafael J . Wysocki" Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Sebastian Reichel Subject: [PATCHv1 13/19] power: supply: sbs-battery: add POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED support Date: Wed, 13 May 2020 20:56:09 +0200 Message-Id: <20200513185615.508236-14-sebastian.reichel@collabora.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200513185615.508236-1-sebastian.reichel@collabora.com> References: <20200513185615.508236-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Add support for reporting the SBS battery's condition flag to userspace using the new "Calibration required" health status. Signed-off-by: Sebastian Reichel --- drivers/power/supply/sbs-battery.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c index 4fa553d61db2..2a2b926ad75c 100644 --- a/drivers/power/supply/sbs-battery.c +++ b/drivers/power/supply/sbs-battery.c @@ -23,6 +23,7 @@ enum { REG_MANUFACTURER_DATA, + REG_BATTERY_MODE, REG_TEMPERATURE, REG_VOLTAGE, REG_CURRENT_NOW, @@ -94,6 +95,8 @@ static const struct chip_data { } sbs_data[] = { [REG_MANUFACTURER_DATA] = SBS_DATA(POWER_SUPPLY_PROP_PRESENT, 0x00, 0, 65535), + [REG_BATTERY_MODE] = + SBS_DATA(-1, 0x03, 0, 65535), [REG_TEMPERATURE] = SBS_DATA(POWER_SUPPLY_PROP_TEMP, 0x08, 0, 65535), [REG_VOLTAGE] = @@ -366,6 +369,17 @@ static int sbs_status_correct(struct i2c_client *client, int *intval) return 0; } +static bool sbs_bat_needs_calibration(struct i2c_client *client) +{ + int ret; + + ret = sbs_read_word_data(client, sbs_data[REG_BATTERY_MODE].addr); + if (ret < 0) + return false; + + return !!(ret & BIT(7)); +} + static int sbs_get_battery_presence_and_health( struct i2c_client *client, enum power_supply_property psp, union power_supply_propval *val) @@ -385,9 +399,14 @@ static int sbs_get_battery_presence_and_health( if (psp == POWER_SUPPLY_PROP_PRESENT) val->intval = 1; /* battery present */ - else /* POWER_SUPPLY_PROP_HEALTH */ - /* SBS spec doesn't have a general health command. */ - val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + else { /* POWER_SUPPLY_PROP_HEALTH */ + if (sbs_bat_needs_calibration(client)) { + val->intval = POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED; + } else { + /* SBS spec doesn't have a general health command. */ + val->intval = POWER_SUPPLY_HEALTH_UNKNOWN; + } + } return 0; } @@ -441,6 +460,8 @@ static int sbs_get_ti_battery_presence_and_health( val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; else if (ret == 0x0C) val->intval = POWER_SUPPLY_HEALTH_DEAD; + else if (sbs_bat_needs_calibration(client)) + val->intval = POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED; else val->intval = POWER_SUPPLY_HEALTH_GOOD; }