From patchwork Thu Nov 9 21:06:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Machek X-Patchwork-Id: 10051943 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B89D760631 for ; Thu, 9 Nov 2017 21:06:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AA2532B112 for ; Thu, 9 Nov 2017 21:06:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9E12C2B11F; Thu, 9 Nov 2017 21:06:21 +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=-6.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_TVD_MIME_EPI 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 CAF682B112 for ; Thu, 9 Nov 2017 21:06:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754001AbdKIVGS (ORCPT ); Thu, 9 Nov 2017 16:06:18 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:43254 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753130AbdKIVGR (ORCPT ); Thu, 9 Nov 2017 16:06:17 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id D00478193E; Thu, 9 Nov 2017 22:06:15 +0100 (CET) Date: Thu, 9 Nov 2017 22:06:15 +0100 From: Pavel Machek To: pali.rohar@gmail.com, sre@kernel.org, kernel list , linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com, patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com, clayton@craftyguy.net, martijn@brixit.nl, sakari.ailus@linux.intel.com, afd@ti.com, kernel@networkimprov.net, devicetree@vger.kernel.org, robh+dt@kernel.org Subject: [PATCH] Add support for bq27521 battery monitor Message-ID: <20171109210615.GA27638@amd> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This adds basic support for BQ27521 battery monitor, used in Nokia N9 and N950. In particular, battery voltage is important to be able to tell when the battery is almost empty. Emptying battery on N950 is pretty painful, as flasher needs to be used to recover phone in such case. Signed-off-by: Pavel Machek Acked-by: Rob Herring diff --git a/Documentation/devicetree/bindings/power/supply/bq27xxx.txt b/Documentation/devicetree/bindings/power/supply/bq27xxx.txt index 6858e1a..615c1cb 100644 --- a/Documentation/devicetree/bindings/power/supply/bq27xxx.txt +++ b/Documentation/devicetree/bindings/power/supply/bq27xxx.txt @@ -15,6 +15,7 @@ Required properties: * "ti,bq27520g2" - BQ27520-g2 * "ti,bq27520g3" - BQ27520-g3 * "ti,bq27520g4" - BQ27520-g4 + * "ti,bq27521" - BQ27521 * "ti,bq27530" - BQ27530 * "ti,bq27531" - BQ27531 * "ti,bq27541" - BQ27541 diff --git a/drivers/power/supply/bq27xxx_battery.c b/drivers/power/supply/bq27xxx_battery.c index ed44439..ee2851a 100644 --- a/drivers/power/supply/bq27xxx_battery.c +++ b/drivers/power/supply/bq27xxx_battery.c @@ -381,6 +381,30 @@ static u8 bq27xxx_regs[][BQ27XXX_REG_MAX] = { [BQ27XXX_REG_AP] = INVALID_REG_ADDR, BQ27XXX_DM_REG_ROWS, }, + [BQ27521] = { /* FIXME */ + [BQ27XXX_REG_CTRL] = 0x02, + [BQ27XXX_REG_TEMP] = 0x0a, + [BQ27XXX_REG_INT_TEMP] = INVALID_REG_ADDR, + [BQ27XXX_REG_VOLT] = 0x0c, + [BQ27XXX_REG_AI] = 0x0e, + [BQ27XXX_REG_FLAGS] = 0x08, + [BQ27XXX_REG_TTE] = INVALID_REG_ADDR, + [BQ27XXX_REG_TTF] = INVALID_REG_ADDR, + [BQ27XXX_REG_TTES] = INVALID_REG_ADDR, + [BQ27XXX_REG_TTECP] = INVALID_REG_ADDR, + [BQ27XXX_REG_NAC] = INVALID_REG_ADDR, + [BQ27XXX_REG_FCC] = INVALID_REG_ADDR, + [BQ27XXX_REG_CYCT] = INVALID_REG_ADDR, + [BQ27XXX_REG_AE] = INVALID_REG_ADDR, + [BQ27XXX_REG_SOC] = INVALID_REG_ADDR, + [BQ27XXX_REG_DCAP] = INVALID_REG_ADDR, + [BQ27XXX_REG_AP] = INVALID_REG_ADDR, + [BQ27XXX_DM_CTRL] = INVALID_REG_ADDR, + [BQ27XXX_DM_CLASS] = INVALID_REG_ADDR, + [BQ27XXX_DM_BLOCK] = INVALID_REG_ADDR, + [BQ27XXX_DM_DATA] = INVALID_REG_ADDR, + [BQ27XXX_DM_CKSUM] = INVALID_REG_ADDR, + }, [BQ27530] = { [BQ27XXX_REG_CTRL] = 0x00, [BQ27XXX_REG_TEMP] = 0x06, @@ -700,6 +724,15 @@ static enum power_supply_property bq27520g4_battery_props[] = { POWER_SUPPLY_PROP_MANUFACTURER, }; +static enum power_supply_property bq27521_battery_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_PRESENT, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_TEMP, + POWER_SUPPLY_PROP_TECHNOLOGY, +}; + static enum power_supply_property bq27530_battery_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_PRESENT, @@ -792,6 +825,7 @@ static struct { BQ27XXX_PROP(BQ27520G2, bq27520g2_battery_props), BQ27XXX_PROP(BQ27520G3, bq27520g3_battery_props), BQ27XXX_PROP(BQ27520G4, bq27520g4_battery_props), + BQ27XXX_PROP(BQ27521, bq27521_battery_props), BQ27XXX_PROP(BQ27530, bq27530_battery_props), BQ27XXX_PROP(BQ27541, bq27541_battery_props), BQ27XXX_PROP(BQ27545, bq27545_battery_props), @@ -1529,6 +1563,7 @@ static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags) case BQ27520G2: case BQ27520G3: case BQ27520G4: + case BQ27521: case BQ27541: case BQ27545: return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD); diff --git a/drivers/power/supply/bq27xxx_battery_i2c.c b/drivers/power/supply/bq27xxx_battery_i2c.c index a597221..fd9b989 100644 --- a/drivers/power/supply/bq27xxx_battery_i2c.c +++ b/drivers/power/supply/bq27xxx_battery_i2c.c @@ -239,6 +239,7 @@ static const struct i2c_device_id bq27xxx_i2c_id_table[] = { { "bq27520g2", BQ27520G2 }, { "bq27520g3", BQ27520G3 }, { "bq27520g4", BQ27520G4 }, + { "bq27521", BQ27521 }, { "bq27530", BQ27530 }, { "bq27531", BQ27530 }, { "bq27541", BQ27541 }, @@ -269,6 +270,7 @@ static const struct of_device_id bq27xxx_battery_i2c_of_match_table[] = { { .compatible = "ti,bq27520g2" }, { .compatible = "ti,bq27520g3" }, { .compatible = "ti,bq27520g4" }, + { .compatible = "ti,bq27521" }, { .compatible = "ti,bq27530" }, { .compatible = "ti,bq27531" }, { .compatible = "ti,bq27541" }, diff --git a/include/linux/power/bq27xxx_battery.h b/include/linux/power/bq27xxx_battery.h index 11e1168..1e80931 100644 --- a/include/linux/power/bq27xxx_battery.h +++ b/include/linux/power/bq27xxx_battery.h @@ -14,6 +14,7 @@ enum bq27xxx_chip { BQ27520G2, /* bq27520G2 */ BQ27520G3, /* bq27520G3 */ BQ27520G4, /* bq27520G4 */ + BQ27521, /* bq27521 */ BQ27530, /* bq27530, bq27531 */ BQ27541, /* bq27541, bq27542, bq27546, bq27742 */ BQ27545, /* bq27545 */