From patchwork Tue Feb 1 13:06:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 539095 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 3D156C433EF for ; Tue, 1 Feb 2022 13:08:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238505AbiBANIL (ORCPT ); Tue, 1 Feb 2022 08:08:11 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:40880 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238459AbiBANIE (ORCPT ); Tue, 1 Feb 2022 08:08:04 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1643720884; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3eqbM7mecBXFvVqc5wDjDqgJcL4J4XqDGplE7250wtU=; b=dEs6ycQgqM2mDgTVWIGv4Xts+/HKaxDAZCxxagxS0hIa0WELn0RAVBhtMvHXkwdGeFluNh 0FBD/3JtT4xU3zlmihigObmoepKa/6wCk64+Y9VGm1GrBlM8JI0RCRcD6qfpar4jqT8SmH hZSxyeJcunOF6cMRkWnUUfMMySYCXYs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-657-NqmtkUtLNry7cOR1vwBKgw-1; Tue, 01 Feb 2022 08:08:01 -0500 X-MC-Unique: NqmtkUtLNry7cOR1vwBKgw-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CD63D1B2C986; Tue, 1 Feb 2022 13:07:58 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.194.196]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0CBB9795B1; Tue, 1 Feb 2022 13:07:54 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Mika Westerberg , Mark Gross , Andy Shevchenko , Wolfram Sang , Lee Jones , Sebastian Reichel , MyungJoo Ham , Chanwoo Choi , Ard Biesheuvel Cc: Hans de Goede , Len Brown , linux-acpi@vger.kernel.org, Yauhen Kharuzhy , Tsuchiya Yuto , Fabio Aiuto , platform-driver-x86@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, Andy Shevchenko Subject: [PATCH v5 06/20] power: supply: bq25890: Add support to read back the settings from the chip Date: Tue, 1 Feb 2022 14:06:52 +0100 Message-Id: <20220201130706.46685-7-hdegoede@redhat.com> In-Reply-To: <20220201130706.46685-1-hdegoede@redhat.com> References: <20220201130706.46685-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org On most x86/ACPI devices there is no devicetree to supply the necessary init-data. Instead the firmware already fully initializes the bq25890 charger at boot. To support this, add support for reading back the settings from the chip through a new "linux,read-back-settings" boolean. So far this new property is only used on x86/ACPI (non devicetree) devs, IOW it is not used in actual devicetree files. The devicetree-bindings maintainers have requested properties like these to not be added to the devicetree-bindings, so the new property is deliberately not added to the existing devicetree-bindings. Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede --- Changes in v2: - New patch in v2 of this series, together with the "linux,skip-reset" patch this patch replaces the "ti,skip-init" patch from v1 --- drivers/power/supply/bq25890_charger.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index cd80d748df92..f758e28046e5 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -111,6 +111,7 @@ struct bq25890_device { struct regmap_field *rmap_fields[F_MAX_FIELDS]; bool skip_reset; + bool read_back_init_data; enum bq25890_chip_version chip_version; struct bq25890_init_data init_data; struct bq25890_state state; @@ -696,7 +697,7 @@ static int bq25890_chip_reset(struct bq25890_device *bq) static int bq25890_rw_init_data(struct bq25890_device *bq) { - bool write = true; + bool write = !bq->read_back_init_data; int ret; int i; @@ -981,6 +982,10 @@ static int bq25890_fw_probe(struct bq25890_device *bq) struct bq25890_init_data *init = &bq->init_data; bq->skip_reset = device_property_read_bool(bq->dev, "linux,skip-reset"); + bq->read_back_init_data = device_property_read_bool(bq->dev, + "linux,read-back-settings"); + if (bq->read_back_init_data) + return 0; ret = bq25890_fw_read_u32_props(bq); if (ret < 0)