From patchwork Tue Jun 7 11:50:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Satya Priya Kakitapalli (Temp)" X-Patchwork-Id: 12871822 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 537C0C433EF for ; Tue, 7 Jun 2022 11:51:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243269AbiFGLvo (ORCPT ); Tue, 7 Jun 2022 07:51:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39862 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238507AbiFGLvm (ORCPT ); Tue, 7 Jun 2022 07:51:42 -0400 Received: from alexa-out-sd-01.qualcomm.com (alexa-out-sd-01.qualcomm.com [199.106.114.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BD06B2EB9; Tue, 7 Jun 2022 04:51:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1654602668; x=1686138668; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=XgBd6JvLdyIrK2Wh6XK+AaOvG2JfKR0kXcKPTzcVORw=; b=vgeQwkDr0yDZYOHeG8ggenHm2PdvHwxOUxzv/1IadUpkcT0Xm4yu+Kny kEzk/BzX8pFOWeQzxfFPnGu3ApiXINpg+UfjJgAZiv9tPMzbXwP/s9Sl4 lddtNo+WgZCPXgcLqNSYkj/eBfakVMBlleZRSeP4Rg78VsCBKRkbycQgC Y=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-01.qualcomm.com with ESMTP; 07 Jun 2022 04:51:08 -0700 X-QCInternal: smtphost Received: from nasanex01c.na.qualcomm.com ([10.47.97.222]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jun 2022 04:51:07 -0700 Received: from nalasex01a.na.qualcomm.com (10.47.209.196) by nasanex01c.na.qualcomm.com (10.47.97.222) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 7 Jun 2022 04:51:07 -0700 Received: from c-skakit-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Tue, 7 Jun 2022 04:51:02 -0700 From: Satya Priya To: Bjorn Andersson , Rob Herring CC: Lee Jones , Liam Girdwood , Mark Brown , , , , , , , , Satya Priya Subject: [PATCH V14 6/9] mfd: pm8008: Use i2c_new_dummy_device() API Date: Tue, 7 Jun 2022 17:20:12 +0530 Message-ID: <1654602615-28849-7-git-send-email-quic_c_skakit@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1654602615-28849-1-git-send-email-quic_c_skakit@quicinc.com> References: <1654602615-28849-1-git-send-email-quic_c_skakit@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Use i2c_new_dummy_device() to register pm8008-regulator client present at a different address space, instead of defining a separate DT node. This avoids calling the probe twice for the same chip, once for each client pm8008-infra and pm8008-regulator. As a part of this define pm8008_regmap_init() to do regmap init for both the clients and define pm8008_get_regmap() to pass the regmap to the regulator driver. Signed-off-by: Satya Priya Reviewed-by: Stephen Boyd --- Changes in V14: - None. Changes in V13: - None. Changes in V12: - Make chip as const in pm8008_get_regmap() definition. - Use EXPORT_SYMBOL_GPL() for pm8008_get_regmap. - Add linux/mfd/qcom_pm8008.h to avoid error. Changes in V11: - Remove the for loop and register dummy directly as there are only 2 clients. - Define pm8008_regmap_init() API to do the redundant init part. drivers/mfd/qcom-pm8008.c | 34 ++++++++++++++++++++++++++++++++-- include/linux/mfd/qcom_pm8008.h | 9 +++++++++ 2 files changed, 41 insertions(+), 2 deletions(-) create mode 100644 include/linux/mfd/qcom_pm8008.h diff --git a/drivers/mfd/qcom-pm8008.c b/drivers/mfd/qcom-pm8008.c index 569ffd50..55e2a8e 100644 --- a/drivers/mfd/qcom-pm8008.c +++ b/drivers/mfd/qcom-pm8008.c @@ -9,6 +9,7 @@ #include #include #include +#include #include #include #include @@ -57,6 +58,7 @@ enum { struct pm8008_data { struct device *dev; + struct regmap *regulators_regmap; int irq; struct regmap_irq_chip_data *irq_data; }; @@ -150,6 +152,12 @@ static struct regmap_config qcom_mfd_regmap_cfg = { .max_register = 0xFFFF, }; +struct regmap *pm8008_get_regmap(const struct pm8008_data *chip) +{ + return chip->regulators_regmap; +} +EXPORT_SYMBOL_GPL(pm8008_get_regmap); + static int pm8008_init(struct regmap *regmap) { int rc; @@ -217,11 +225,25 @@ static int pm8008_probe_irq_peripherals(struct pm8008_data *chip, return 0; } +static struct regmap *pm8008_regmap_init(struct i2c_client *client, + struct pm8008_data *chip) +{ + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, &qcom_mfd_regmap_cfg); + if (!regmap) + return NULL; + + i2c_set_clientdata(client, chip); + return regmap; +} + static int pm8008_probe(struct i2c_client *client) { int rc; struct pm8008_data *chip; struct gpio_desc *reset_gpio; + struct i2c_client *regulators_client; struct regmap *regmap; chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); @@ -229,11 +251,19 @@ static int pm8008_probe(struct i2c_client *client) return -ENOMEM; chip->dev = &client->dev; - regmap = devm_regmap_init_i2c(client, &qcom_mfd_regmap_cfg); + regmap = pm8008_regmap_init(client, chip); if (!regmap) return -ENODEV; - i2c_set_clientdata(client, chip); + regulators_client = i2c_new_dummy_device(client->adapter, client->addr + 1); + if (IS_ERR(regulators_client)) { + dev_err(&client->dev, "can't attach client\n"); + return PTR_ERR(regulators_client); + } + + chip->regulators_regmap = pm8008_regmap_init(regulators_client, chip); + if (!chip->regulators_regmap) + return -ENODEV; reset_gpio = devm_gpiod_get(chip->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(reset_gpio)) diff --git a/include/linux/mfd/qcom_pm8008.h b/include/linux/mfd/qcom_pm8008.h new file mode 100644 index 0000000..3814bff --- /dev/null +++ b/include/linux/mfd/qcom_pm8008.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. +#ifndef __QCOM_PM8008_H__ +#define __QCOM_PM8008_H__ + +struct pm8008_data; +struct regmap *pm8008_get_regmap(const struct pm8008_data *chip); + +#endif