From patchwork Sun Mar 22 22:30:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: saravanan sekar X-Patchwork-Id: 11452125 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 51A5917EF for ; Sun, 22 Mar 2020 22:30:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C76A2072E for ; Sun, 22 Mar 2020 22:30:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="XtTdCQkp" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726875AbgCVWa3 (ORCPT ); Sun, 22 Mar 2020 18:30:29 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:40437 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726797AbgCVWa3 (ORCPT ); Sun, 22 Mar 2020 18:30:29 -0400 Received: by mail-wm1-f67.google.com with SMTP id a81so6931374wmf.5; Sun, 22 Mar 2020 15:30:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=V1IoBnnxV2Y83h2tlBdWy/1+5bjdle9P7nqs3bJI3i8=; b=XtTdCQkpr+o6kyj73/aQkfTjIwMxz9y4AdHrLcVTm6dU7p02lHc2xghfjD/MNZzzJu k4jQxRVegQTIy4APZ/F6XwKw0PzQXisKO4VkiojrjUA/CF9dbRvtpBYvKfchEq5U5xh+ UlNZXEvsQNIOapPVZClHmziLzIdz2e1g/AL6NPsbz27poj5nwoOHFWksZX5IfETxdzI6 6PpiggwonuXKjDEmlu8p2yI/d+3Rsf3npJnREawz5jFPGjNE2aLObxdptKbnRvHpb/Nl uOGCxmLelQ2oyTQzpjLmAd/EOMDJvjBCPXJzGG7RSxJ7BVXvyZI9doMgArjBYSY+n7S5 BaSg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=V1IoBnnxV2Y83h2tlBdWy/1+5bjdle9P7nqs3bJI3i8=; b=VlEbSVWwzgpTNBn7808lDn5WjjBOGZA29AEDnCOCquPCIzFE52sXziz9RQXC6ITqx9 ZOKz2EELgV9kbuoXgSCQHzd6stsXK16DMWNTCtlLLCRKWuOcjxSaZgP89AXBwG7X1Ozq WQq5AJsdzRIrWxLvZXW7XIOnSIPaI0cM4DLj3UuFup+4W6EDHTXaYYY3XU/c/GKHse0s zm6jTvletz2Hp4lPONqBskR1VP6YtJW971xW9shn6jJP3P+QlVc6RIguVVKpldGCFfcS ihjrunDIr38Zgth0NzuLtC8VU2+TtrntW4OSL50UtokB/DPDkOpdh1gHGpptILoyp0aU aMxQ== X-Gm-Message-State: ANhLgQ0vhohePvACvasw/UanLw6iAj2UiZ7LX1w+eEalMlpcIKb33TP8 mwOYBXmvAgVAesedeteuuKU2X5uR0nI= X-Google-Smtp-Source: ADFU+vt6WlMVjqpsPBPqnWoIiKd2ytsU9yzX0B0Smb/AF63Sc62fiu+9H+YrqMVCDAwy+28cuKiSSQ== X-Received: by 2002:a7b:ce19:: with SMTP id m25mr24368421wmc.134.1584916226413; Sun, 22 Mar 2020 15:30:26 -0700 (PDT) Received: from localhost.localdomain (p5DCFFFE5.dip0.t-ipconnect.de. [93.207.255.229]) by smtp.gmail.com with ESMTPSA id p13sm8060517wru.3.2020.03.22.15.30.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:30:25 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v3 1/5] dt-bindings: mfd: add document bindings for mp2629 Date: Sun, 22 Mar 2020 23:30:12 +0100 Message-Id: <20200322223016.11509-2-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322223016.11509-1-sravanhome@gmail.com> References: <20200322223016.11509-1-sravanhome@gmail.com> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add device tree binding information for mp2629 mfd driver. Signed-off-by: Saravanan Sekar --- .../devicetree/bindings/mfd/mps,mp2629.yaml | 62 +++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/mps,mp2629.yaml diff --git a/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml b/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml new file mode 100644 index 000000000000..f5b8c73123c6 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/mps,mp2629.yaml @@ -0,0 +1,62 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/mps,mp2629.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MP2629 Battery Charger PMIC from Monolithic Power System. + +maintainers: + - Saravanan Sekar + +description: | + MP2629 is an PMIC providing battery charging and power supply for smartphones, + Wireless camera and portable devices. Chip is contrlled over I2C. + + The MFD device handles battery charger controller and ADC IIO device for + battery, system voltage + +properties: + compatible: + const: mps,mp2629 + + reg: + description: + I2C device address. + maxItems: 1 + + interrupts: + maxItems: 1 + + interrupt-controller: true + + "#interrupt-cells": + const: 2 + description: + The first cell is the IRQ number, the second cell is the trigger type. + +required: + - compatible + - reg + - interrupts + - interrupt-controller + - "#interrupt-cells" + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pmic@4b { + compatible = "mps,mp2629"; + reg = <0x4b>; + + interrupt-controller; + interrupt-parent = <&gpio2>; + #interrupt-cells = <2>; + interrupts = <3 IRQ_TYPE_LEVEL_HIGH>; + }; + }; From patchwork Sun Mar 22 22:30:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: saravanan sekar X-Patchwork-Id: 11452135 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5053117D4 for ; Sun, 22 Mar 2020 22:30:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 254C22078A for ; Sun, 22 Mar 2020 22:30:49 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Qp2XexoH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726979AbgCVWad (ORCPT ); Sun, 22 Mar 2020 18:30:33 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:55847 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726944AbgCVWad (ORCPT ); Sun, 22 Mar 2020 18:30:33 -0400 Received: by mail-wm1-f66.google.com with SMTP id 6so12621247wmi.5; Sun, 22 Mar 2020 15:30:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1CcZArctEEFdFZ3lV0Ksbnx22Bq4V6ii1JwnJkHBEDk=; b=Qp2XexoHIzz1cQ2WhFmfG04EH+cNiHlMgIgI8FxHu1BvKynfMN6HWuNUx+jeyE9Lpp pqWlIhLLtNJzgHIij39di0FPYW56aQZvdDRiihz/TyGTQNYOOb36gWqRy8PYGTLAhOET SsnXrs30eThEbjKL2LabV3yuEj8h52r1ydaKWVOHT1mvPfxzytKPbXXQ9RGmwFlN1eMz /Kg25wKJOtgEZWAsuGazbR/ekAKCCdzrIMfgQ7j9i4u61yB6j7WKZn5Q+7CALPSEvvtd KFHEWTDxohiIKuq0CcHzBvjI+bme7l5IYHIPIRc1C7o9+kyRgnnQoLmHlHtNL2gfBG/S RHKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=1CcZArctEEFdFZ3lV0Ksbnx22Bq4V6ii1JwnJkHBEDk=; b=YwDJGE+0O8iJapBMm0IHgGSqTg4p8lr6iGbXsIyJEOUz1YsVVa6M+hhElHhjje4mTM Ty0NDwdsuvbfON6F7YlVRJYnHEcUqP6XCeIhFZUuhDkxLNwYSXb8KvNiKOB5F5IqTa3U FwyhO0gXe+YrIgjqC03lbYQ18ISbaRcHzqPmL+ARBV4k0HjfK4O5jWOeuB9PartUJkM0 71iswU+FzMzCtBWn4xO9bUwSsyaBOETEJBdj/Y7YsR3IR7wS95wmjdy2t15b9fn40uwe HodIf2DE2PeVLXuoWidIu3SWf4lqbS0pVSDwGMtA/V6xjgC47OYLn0eKPADqkZeC7fZY 8BJQ== X-Gm-Message-State: ANhLgQ0I4/GJRN+KUnYHWeiqV6QmKEHoCTLq22Gs9DZjS3BFpjG1kB5Z NrNDL0itpDaH7i1Vlj/4Tuo= X-Google-Smtp-Source: ADFU+vsAeO//CcjdvQAwHFZUQw7VW5KhA1vStlCO/W4lmSgueqSSlpbHg7xkMadFUPm7UgfL6fXRVw== X-Received: by 2002:a7b:c40f:: with SMTP id k15mr18587913wmi.144.1584916228014; Sun, 22 Mar 2020 15:30:28 -0700 (PDT) Received: from localhost.localdomain (p5DCFFFE5.dip0.t-ipconnect.de. [93.207.255.229]) by smtp.gmail.com with ESMTPSA id p13sm8060517wru.3.2020.03.22.15.30.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:30:27 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v3 2/5] mfd: mp2629: Add support for mps battery charger Date: Sun, 22 Mar 2020 23:30:13 +0100 Message-Id: <20200322223016.11509-3-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322223016.11509-1-sravanhome@gmail.com> References: <20200322223016.11509-1-sravanhome@gmail.com> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org mp2629 is a highly-integrated switching-mode battery charge management device for single-cell Li-ion or Li-polymer battery. Add MFD core enables chip access for ADC driver for battery readings, and a power supply battery-charger driver Signed-off-by: Saravanan Sekar --- drivers/mfd/Kconfig | 9 +++ drivers/mfd/Makefile | 2 + drivers/mfd/mp2629.c | 116 +++++++++++++++++++++++++++++++++++++ include/linux/mfd/mp2629.h | 22 +++++++ 4 files changed, 149 insertions(+) create mode 100644 drivers/mfd/mp2629.c create mode 100644 include/linux/mfd/mp2629.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3c547ed575e6..f3f0a2908f16 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -434,6 +434,15 @@ config MFD_MC13XXX_I2C help Select this if your MC13xxx is connected via an I2C bus. +config MFD_MP2629 + bool "Monolithic power system MP2629 ADC and Battery charger" + depends on I2C + select REGMAP_I2C + help + Select this option to enable support for Monolithic power system + Battery charger. This provides ADC, thermal, Battery charger power + management functions on the systems. + config MFD_MXS_LRADC tristate "Freescale i.MX23/i.MX28 LRADC" depends on ARCH_MXS || COMPILE_TEST diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f935d10cbf0f..d6c210f96d02 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -170,6 +170,8 @@ obj-$(CONFIG_MFD_MAX8925) += max8925.o obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o obj-$(CONFIG_MFD_MAX8998) += max8998.o max8998-irq.o +obj-$(CONFIG_MFD_MP2629) += mp2629.o + pcf50633-objs := pcf50633-core.o pcf50633-irq.o obj-$(CONFIG_MFD_PCF50633) += pcf50633.o obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o diff --git a/drivers/mfd/mp2629.c b/drivers/mfd/mp2629.c new file mode 100644 index 000000000000..41a4082387ce --- /dev/null +++ b/drivers/mfd/mp2629.c @@ -0,0 +1,116 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * MP2629 MFD Driver for ADC and battery charger + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +enum { + MP2629_MFD_ADC, + MP2629_MFD_CHARGER, + MP2629_MFD_MAX +}; + +static struct resource mp2629_irq_rsrc[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mfd_cell mp2629mfd[] = { + [MP2629_MFD_ADC] = { + .name = "mp2629_adc", + .of_compatible = "mps,mp2629_adc", + }, + [MP2629_MFD_CHARGER] = { + .name = "mp2629_charger", + .of_compatible = "mps,mp2629_charger", + .resources = mp2629_irq_rsrc, + .num_resources = ARRAY_SIZE(mp2629_irq_rsrc), + } +}; + +static const struct regmap_config mp2629_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x17, +}; + +static int mp2629_probe(struct i2c_client *client) +{ + struct mp2629_info *info; + struct resource *resources; + int ret; + int i; + + info = devm_kzalloc(&client->dev, sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->dev = &client->dev; + i2c_set_clientdata(client, info); + + info->regmap = devm_regmap_init_i2c(client, &mp2629_regmap_config); + if (IS_ERR(info->regmap)) { + dev_err(info->dev, "Failed to allocate regmap!\n"); + return PTR_ERR(info->regmap); + } + + for (i = 0; i < MP2629_MFD_MAX; i++) { + mp2629mfd[i].platform_data = &info->regmap; + mp2629mfd[i].pdata_size = sizeof(info->regmap); + + resources = (struct resource *)mp2629mfd[i].resources; + if (resources) { + resources[0].start = client->irq; + resources[0].end = client->irq; + } + } + + ret = devm_mfd_add_devices(info->dev, PLATFORM_DEVID_NONE, mp2629mfd, + ARRAY_SIZE(mp2629mfd), NULL, + 0, NULL); + if (ret) + dev_err(info->dev, "Failed to add mfd %d\n", ret); + + return ret; +} + +static const struct of_device_id mp2629_of_match[] = { + { .compatible = "mps,mp2629"}, + { } +}; +MODULE_DEVICE_TABLE(of, mp2629_of_match); + +static const struct i2c_device_id mp2629_id[] = { + { "mp2629", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, mp2629_id); + +static struct i2c_driver mp2629_driver = { + .driver = { + .name = "mp2629", + .of_match_table = mp2629_of_match, + }, + .probe_new = mp2629_probe, + .id_table = mp2629_id, +}; +module_i2c_driver(mp2629_driver); + +MODULE_AUTHOR("Saravanan Sekar "); +MODULE_DESCRIPTION("MP2629 Battery charger mfd driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/mp2629.h b/include/linux/mfd/mp2629.h new file mode 100644 index 000000000000..371e44330ba8 --- /dev/null +++ b/include/linux/mfd/mp2629.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * mp2629.h - register definitions for mp2629 charger + * + * Copyright 2020 Monolithic Power Systems, Inc + * + */ + +#ifndef __MP2629_H__ +#define __MP2629_H__ + +#include + +struct device; +struct regmap; + +struct mp2629_info { + struct device *dev; + struct regmap *regmap; +}; + +#endif From patchwork Sun Mar 22 22:30:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: saravanan sekar X-Patchwork-Id: 11452141 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 34EE717D4 for ; Sun, 22 Mar 2020 22:30:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A20A20736 for ; Sun, 22 Mar 2020 22:30:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ZkeDixSN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726953AbgCVWac (ORCPT ); Sun, 22 Mar 2020 18:30:32 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:34961 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726797AbgCVWac (ORCPT ); Sun, 22 Mar 2020 18:30:32 -0400 Received: by mail-wr1-f68.google.com with SMTP id d5so2304267wrn.2; Sun, 22 Mar 2020 15:30:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=9H8A2HbY1w0LSOhr2nvKesIOJNJPWZKH+LxS/vDPtSo=; b=ZkeDixSN1LLIudqWE3IqQzSdF8EeTM0MCN4AGOjdQ+uVV0Vsrji3WdWgEaLhu8rvyq EMd/dj3uBSl1gscAqz5u2KJsC/kOH5ummiwPmzanhF9re9rNaTR2Ku+p1fEiu+5Cocg0 rtMN+p6/0QxFmlhDsfwdusDAh7rY445hJOOR3HS+D5ViLjy5D8/Dv492FGgyX2kOct6E 7BQpnGfG0MJVtGQkSujsFOBi2k1wOtUhMLoEqoAM/lqD2ymv0BWxar6Q9OM3bmhOpmpf zlpN9HZPxqgVbmq5qSy6jVGJH7YWENFrSB74Q3WLlW8gndokRuOcBGR19fWNnGN/VvA+ 5LXw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=9H8A2HbY1w0LSOhr2nvKesIOJNJPWZKH+LxS/vDPtSo=; b=i/Yu0RkrkWiL9Ipz1X/SLSh467tzEwQcyYCP+o4RxU0KEOs+beymAmwYQ8UioPwHkY YlP9MS7IpixJ+6e2ZW1sxdnThet4Y8KxoKFaMEDS9UeMPYStzx3nd9vwX9UmwYk/EFLF CEs2m7zDzelru5kIyNOUWmwioutGTsnQI3v99QdpzDOMfSd64rCJ4n4y/6ATpknorh7L Xkbiu9fhk6KNyC+r3qHeRxkBhYQpp+R01pV9Q+uC6ISjEjR8LrSAGx1F9odxiGDXhkhG IyFS7GujgEdsLw4eLaKLyjK4/RKwZ5gsXuaV85oQEflBuEgLyjF5LNZMfUYL3Ihql1nD Gb8w== X-Gm-Message-State: ANhLgQ1ZD6A0BluyOq9a2GBpu7XbJ/Ov/cgPrTq/daChtnMcazXJYDL9 GNFWkYqA7O6SXMslO6XDjNQ= X-Google-Smtp-Source: ADFU+vucbMbDD74GrEvC265qJXP7d/+ar4v4kAb4eXXvldYBxEJ9/YSToy4oEDke2kk19YZJDeNdUw== X-Received: by 2002:a5d:56ca:: with SMTP id m10mr26712868wrw.313.1584916229399; Sun, 22 Mar 2020 15:30:29 -0700 (PDT) Received: from localhost.localdomain (p5DCFFFE5.dip0.t-ipconnect.de. [93.207.255.229]) by smtp.gmail.com with ESMTPSA id p13sm8060517wru.3.2020.03.22.15.30.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:30:28 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v3 3/5] iio: adc: mp2629: Add support for mp2629 ADC driver Date: Sun, 22 Mar 2020 23:30:14 +0100 Message-Id: <20200322223016.11509-4-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322223016.11509-1-sravanhome@gmail.com> References: <20200322223016.11509-1-sravanhome@gmail.com> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add support for 8-bit resolution ADC readings for input power supply and battery charging measurement. Provides voltage, current readings to mp2629 power supply driver. Signed-off-by: Saravanan Sekar --- drivers/iio/adc/Kconfig | 10 ++ drivers/iio/adc/Makefile | 1 + drivers/iio/adc/mp2629_adc.c | 214 +++++++++++++++++++++++++++++++++++ include/linux/mfd/mp2629.h | 9 ++ 4 files changed, 234 insertions(+) create mode 100644 drivers/iio/adc/mp2629_adc.c diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 82e33082958c..ef0c0cd31855 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -680,6 +680,16 @@ config MESON_SARADC To compile this driver as a module, choose M here: the module will be called meson_saradc. +config MP2629_ADC + tristate "Monolithic MP2629 ADC driver" + depends on MFD_MP2629 + help + Say yes to have support for battery charger IC MP2629 ADC device + accessed over I2C. + + This driver provides ADC conversion of system, input power supply + and battery voltage & current information. + config NAU7802 tristate "Nuvoton NAU7802 ADC driver" depends on I2C diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 919228900df9..f14416c245a6 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -64,6 +64,7 @@ obj-$(CONFIG_MCP3911) += mcp3911.o obj-$(CONFIG_MEDIATEK_MT6577_AUXADC) += mt6577_auxadc.o obj-$(CONFIG_MEN_Z188_ADC) += men_z188_adc.o obj-$(CONFIG_MESON_SARADC) += meson_saradc.o +obj-$(CONFIG_MP2629_ADC) += mp2629_adc.o obj-$(CONFIG_MXS_LRADC_ADC) += mxs-lradc-adc.o obj-$(CONFIG_NAU7802) += nau7802.o obj-$(CONFIG_NPCM_ADC) += npcm_adc.o diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c new file mode 100644 index 000000000000..6967c695d177 --- /dev/null +++ b/drivers/iio/adc/mp2629_adc.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MP2629 Driver for ADC + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define MP2629_REG_ADC_CTRL 0x03 +#define MP2629_REG_BATT_VOLT 0x0e +#define MP2629_REG_SYSTEM_VOLT 0x0f +#define MP2629_REG_INPUT_VOLT 0x11 +#define MP2629_REG_BATT_CURRENT 0x12 +#define MP2629_REG_INPUT_CURRENT 0x13 + +#define MP2629_ADC_START BIT(7) +#define MP2629_ADC_CONTINUOUS BIT(6) + +#define MP2629_MAP(_mp, _mpc) IIO_MAP(#_mp, "mp2629_charger", "mp2629-"_mpc) + +#define MP2629_ADC_CHAN(_ch, _type) { \ + .type = _type, \ + .indexed = 1, \ + .datasheet_name = #_ch, \ + .channel = MP2629_ ## _ch, \ + .address = MP2629_REG_ ## _ch, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ +} + +struct mp2629_adc { + struct regmap *regmap; + struct device *dev; +}; + +static struct iio_chan_spec mp2629_channels[] = { + MP2629_ADC_CHAN(BATT_VOLT, IIO_VOLTAGE), + MP2629_ADC_CHAN(SYSTEM_VOLT, IIO_VOLTAGE), + MP2629_ADC_CHAN(INPUT_VOLT, IIO_VOLTAGE), + MP2629_ADC_CHAN(BATT_CURRENT, IIO_CURRENT), + MP2629_ADC_CHAN(INPUT_CURRENT, IIO_CURRENT) +}; + +static struct iio_map mp2629_adc_maps[] = { + MP2629_MAP(BATT_VOLT, "batt-volt"), + MP2629_MAP(SYSTEM_VOLT, "system-volt"), + MP2629_MAP(INPUT_VOLT, "input-volt"), + MP2629_MAP(BATT_CURRENT, "batt-current"), + MP2629_MAP(INPUT_CURRENT, "input-current") +}; + +static int mp2629_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct mp2629_adc *info = iio_priv(indio_dev); + unsigned int rval; + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = regmap_read(info->regmap, chan->address, &rval); + if (ret < 0) + return ret; + + if (chan->address == MP2629_INPUT_VOLT) + rval &= 0x7f; + *val = rval; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_SCALE: + switch (chan->channel) { + case MP2629_BATT_VOLT: + case MP2629_SYSTEM_VOLT: + *val = 20; + return IIO_VAL_INT; + + case MP2629_INPUT_VOLT: + *val = 60; + return IIO_VAL_INT; + + case MP2629_BATT_CURRENT: + *val = 175; + *val2 = 10; + return IIO_VAL_FRACTIONAL; + + case MP2629_INPUT_CURRENT: + *val = 133; + *val2 = 10; + return IIO_VAL_FRACTIONAL; + + default: + return -EINVAL; + } + + default: + return -EINVAL; + } + + return 0; +} + +static const struct iio_info mp2629_adc_info = { + .read_raw = &mp2629_read_raw, +}; + +static int mp2629_adc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + void **pdata = pdev->dev.platform_data; + struct mp2629_adc *info; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*info)); + if (!indio_dev) + return -ENOMEM; + + info = iio_priv(indio_dev); + info->regmap = *pdata; + info->dev = dev; + platform_set_drvdata(pdev, indio_dev); + + ret = iio_map_array_register(indio_dev, mp2629_adc_maps); + if (ret) { + dev_err(dev, "IIO maps register fail: %d\n", ret); + return ret; + } + + indio_dev->name = dev_name(dev); + indio_dev->dev.parent = dev; + indio_dev->dev.of_node = pdev->dev.of_node; + indio_dev->channels = mp2629_channels; + indio_dev->num_channels = ARRAY_SIZE(mp2629_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &mp2629_adc_info; + + ret = regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL, + MP2629_ADC_START | MP2629_ADC_CONTINUOUS, + MP2629_ADC_START | MP2629_ADC_CONTINUOUS); + if (ret) { + dev_err(dev, "adc enable fail: %d\n", ret); + goto fail_unmap; + } + + ret = devm_iio_device_register(dev, indio_dev); + if (ret) { + dev_err(dev, "IIO device register fail: %d\n", ret); + goto fail_disable; + } + + return 0; + +fail_disable: + regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL, + MP2629_ADC_CONTINUOUS, 0); + regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL, + MP2629_ADC_START, 0); + +fail_unmap: + iio_map_array_unregister(indio_dev); + + return ret; +} + +static int mp2629_adc_remove(struct platform_device *pdev) +{ + struct iio_dev *indio_dev = platform_get_drvdata(pdev); + struct mp2629_adc *info = iio_priv(indio_dev); + + regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL, + MP2629_ADC_CONTINUOUS, 0); + regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL, + MP2629_ADC_START, 0); + + iio_map_array_unregister(indio_dev); + iio_device_unregister(indio_dev); + + return 0; +} + +static const struct of_device_id mp2629_adc_of_match[] = { + { .compatible = "mps,mp2629_adc"}, + {} +}; +MODULE_DEVICE_TABLE(of, mp2629_adc_of_match); + +static struct platform_driver mp2629_adc_driver = { + .driver = { + .name = "mp2629_adc", + .of_match_table = mp2629_adc_of_match, + }, + .probe = mp2629_adc_probe, + .remove = mp2629_adc_remove, +}; +module_platform_driver(mp2629_adc_driver); + +MODULE_AUTHOR("Saravanan Sekar "); +MODULE_DESCRIPTION("MP2629 ADC driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/mp2629.h b/include/linux/mfd/mp2629.h index 371e44330ba8..8b9c717e1fb0 100644 --- a/include/linux/mfd/mp2629.h +++ b/include/linux/mfd/mp2629.h @@ -19,4 +19,13 @@ struct mp2629_info { struct regmap *regmap; }; +enum mp2629_adc_chan { + MP2629_BATT_VOLT, + MP2629_SYSTEM_VOLT, + MP2629_INPUT_VOLT, + MP2629_BATT_CURRENT, + MP2629_INPUT_CURRENT, + MP2629_ADC_CHAN_END +}; + #endif From patchwork Sun Mar 22 22:30:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: saravanan sekar X-Patchwork-Id: 11452131 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1814817EF for ; Sun, 22 Mar 2020 22:30:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0D9120786 for ; Sun, 22 Mar 2020 22:30:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SOjbmM5S" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727026AbgCVWag (ORCPT ); Sun, 22 Mar 2020 18:30:36 -0400 Received: from mail-wm1-f65.google.com ([209.85.128.65]:51797 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726974AbgCVWaf (ORCPT ); Sun, 22 Mar 2020 18:30:35 -0400 Received: by mail-wm1-f65.google.com with SMTP id c187so12607220wme.1; Sun, 22 Mar 2020 15:30:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=si9N8+YwRy72oKL/4+9J7FoJ4zmCOuTFLLq++DQhCls=; b=SOjbmM5SiFZ+4m0pWYYLwqBOIXnrqF3j9qeVu5p+ioT/gMt6ikb1SIRlrSI4s9Q+Dr JVAth+FXAppSRN0CCDaSiJcie3TYPn4sLg60EQi7dQnpPG/oLb3bFT7d/E4jYVpeMMJU ljtdNYgn5n7MAMlQnb/muXbB6GikPIBIWpw8qaYaatG2GJgFGhEwKiNFnHC7TuR4GezD wDvfhUqQ3JnZz7FGP37H96nK9cTyW5f4/xc8eyqkApd3U09gq+LgnrOnnQUzynxKjdJ3 GLHbnwC26P6JAT43x6zCyvRv95AWdeBne+KMNSMKYBy0PToToYm93rd2bq0uNv1E6/cV REFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=si9N8+YwRy72oKL/4+9J7FoJ4zmCOuTFLLq++DQhCls=; b=gX5xbBc9T36klJ1uuLw1uAW7pVSsYCbMs2+DpjapTKVgJ9nlPJWTYJxaKlyetV6IfR xFJcuX9ycriiKn9a3DKeeBjT4szNObp4EzYD/k92YPdsK1/IB3pcNfsdj3fqqvJ8MtAi nlJ8hEay5qslp/dsP1N+tBJN+J+qm1eNNtDCbBXTqwaVmvkfSkgQ5DeDHdMT6/B2zZ97 JC+tQ96W/cGemUVCXHM2rashkqIGYpxrg2MTZUiBXmfGHNZ6b7dXxVZKXsynzCf5iEv7 QiIOQqN6x+tYQjGYgvFOiWPsN/mSrLYK3o+EV54vE6e2H75HC4EsEoeCl7hyKVV+4kWP xPWQ== X-Gm-Message-State: ANhLgQ3o8J3Jr+UWbJZrrcZiDNrqcfw4wQJoKONDBsKsubT+HHgTIdCG 23EO+waM/smC7DP1Ih60Jow= X-Google-Smtp-Source: ADFU+vt0rroS48VRRtv3hPhakDQ4FuDIgxvOM3dArxLnFYfwPUgeA4BwCAp3/oCH2bjZyCm5CQNFOQ== X-Received: by 2002:a7b:cb17:: with SMTP id u23mr24642296wmj.12.1584916230677; Sun, 22 Mar 2020 15:30:30 -0700 (PDT) Received: from localhost.localdomain (p5DCFFFE5.dip0.t-ipconnect.de. [93.207.255.229]) by smtp.gmail.com with ESMTPSA id p13sm8060517wru.3.2020.03.22.15.30.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:30:29 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v3 4/5] power: supply: Add support for mps mp2629 battery charger Date: Sun, 22 Mar 2020 23:30:15 +0100 Message-Id: <20200322223016.11509-5-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322223016.11509-1-sravanhome@gmail.com> References: <20200322223016.11509-1-sravanhome@gmail.com> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org The mp2629 provides switching-mode battery charge management for single-cell Li-ion or Li-polymer battery. Driver supports the access/control input source and battery charging parameters. Signed-off-by: Saravanan Sekar --- drivers/power/supply/Kconfig | 10 + drivers/power/supply/Makefile | 1 + drivers/power/supply/mp2629_charger.c | 697 ++++++++++++++++++++++++++ 3 files changed, 708 insertions(+) create mode 100644 drivers/power/supply/mp2629_charger.c diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig index f3424fdce341..f45409d26d54 100644 --- a/drivers/power/supply/Kconfig +++ b/drivers/power/supply/Kconfig @@ -541,6 +541,16 @@ config CHARGER_MAX8998 Say Y to enable support for the battery charger control sysfs and platform data of MAX8998/LP3974 PMICs. +config CHARGER_MP2629 + bool "Monolithic power system MP2629 Battery charger" + depends on MFD_MP2629 + depends on MP2629_ADC + depends on IIO + help + Select this option to enable support for Monolithic power system + Battery charger. This driver provies Battery charger power management + functions on the systems. + config CHARGER_QCOM_SMBB tristate "Qualcomm Switch-Mode Battery Charger and Boost" depends on MFD_SPMI_PMIC || COMPILE_TEST diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile index 6c7da920ea83..41cb64f09e49 100644 --- a/drivers/power/supply/Makefile +++ b/drivers/power/supply/Makefile @@ -75,6 +75,7 @@ obj-$(CONFIG_CHARGER_MAX77650) += max77650-charger.o obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o obj-$(CONFIG_CHARGER_MAX8998) += max8998_charger.o +obj-$(CONFIG_CHARGER_MP2629) += mp2629_charger.o obj-$(CONFIG_CHARGER_QCOM_SMBB) += qcom_smbb.o obj-$(CONFIG_CHARGER_BQ2415X) += bq2415x_charger.o obj-$(CONFIG_CHARGER_BQ24190) += bq24190_charger.o diff --git a/drivers/power/supply/mp2629_charger.c b/drivers/power/supply/mp2629_charger.c new file mode 100644 index 000000000000..62a3ae4d1df8 --- /dev/null +++ b/drivers/power/supply/mp2629_charger.c @@ -0,0 +1,697 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * MP2629 battery charger driver + * + * Copyright 2020 Monolithic Power Systems, Inc + * + * Author: Saravanan Sekar + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define MP2629_REG_INPUT_ILIM 0x00 +#define MP2629_REG_INPUT_VLIM 0x01 +#define MP2629_REG_CHARGE_CTRL 0x04 +#define MP2629_REG_CHARGE_ILIM 0x05 +#define MP2629_REG_PRECHARGE 0x06 +#define MP2629_REG_TERM_CURRENT 0x06 +#define MP2629_REG_CHARGE_VLIM 0x07 +#define MP2629_REG_TIMER_CTRL 0x08 +#define MP2629_REG_IMPEDANCE_COMP 0x09 +#define MP2629_REG_INTERRUPT 0x0b +#define MP2629_REG_STATUS 0x0c +#define MP2629_REG_FAULT 0x0d + +#define MP2629_MASK_INPUT_TYPE 0xe0 +#define MP2629_MASK_CHARGE_TYPE 0x18 +#define MP2629_MASK_CHARGE_CTRL 0x30 +#define MP2629_MASK_WDOG_CTRL 0x30 +#define MP2629_MASK_IMPEDANCE 0xf0 + +#define MP2629_INPUTSOURCE_CHANGE GENMASK(7, 5) +#define MP2629_CHARGING_CHANGE GENMASK(4, 3) +#define MP2629_FAULT_BATTERY BIT(3) +#define MP2629_FAULT_THERMAL BIT(4) +#define MP2629_FAULT_INPUT BIT(5) +#define MP2629_FAULT_OTG BIT(6) + +#define MP2629_MAX_BATT_CAPACITY 100 + +#define MP2629_PROPS(_idx, _min, _max, _step) \ + [_idx] = { \ + .min = _min, \ + .max = _max, \ + .step = _step, \ +} + +enum mp2629_source_type { + MP2629_SOURCE_TYPE_NO_INPUT, + MP2629_SOURCE_TYPE_NON_STD, + MP2629_SOURCE_TYPE_SDP, + MP2629_SOURCE_TYPE_CDP, + MP2629_SOURCE_TYPE_DCP, + MP2629_SOURCE_TYPE_OTG = 7, +}; + +enum mp2629_field { + INPUT_ILIM, + INPUT_VLIM, + CHARGE_ILIM, + CHARGE_VLIM, + PRECHARGE, + TERM_CURRENT, +}; + +struct mp2629_charger { + struct device *dev; + struct work_struct charger_work; + int status; + int fault; + int irq; + + struct regmap *regmap; + struct regmap_field *regmap_fields[TERM_CURRENT + 1]; + struct mutex lock; + struct power_supply *usb; + struct power_supply *battery; + struct iio_channel *iiochan[MP2629_ADC_CHAN_END]; +}; + +struct mp2629_prop { + int reg; + int mask; + int min; + int max; + int step; + int shift; +}; + +static enum power_supply_usb_type mp2629_usb_types[] = { + POWER_SUPPLY_USB_TYPE_SDP, + POWER_SUPPLY_USB_TYPE_DCP, + POWER_SUPPLY_USB_TYPE_CDP, + POWER_SUPPLY_USB_TYPE_PD_DRP, + POWER_SUPPLY_USB_TYPE_UNKNOWN +}; + +static enum power_supply_property mp2629_charger_usb_props[] = { + POWER_SUPPLY_PROP_ONLINE, + POWER_SUPPLY_PROP_USB_TYPE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, + POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT, +}; + +static enum power_supply_property mp2629_charger_bat_props[] = { + POWER_SUPPLY_PROP_STATUS, + POWER_SUPPLY_PROP_HEALTH, + POWER_SUPPLY_PROP_CHARGE_TYPE, + POWER_SUPPLY_PROP_VOLTAGE_NOW, + POWER_SUPPLY_PROP_CURRENT_NOW, + POWER_SUPPLY_PROP_CAPACITY, + POWER_SUPPLY_PROP_PRECHARGE_CURRENT, + POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, + POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX, +}; + +static struct mp2629_prop props[] = { + MP2629_PROPS(INPUT_ILIM, 100000, 3250000, 50000), + MP2629_PROPS(INPUT_VLIM, 3800000, 5300000, 100000), + MP2629_PROPS(CHARGE_ILIM, 320000, 4520000, 40000), + MP2629_PROPS(CHARGE_VLIM, 3400000, 4670000, 10000), + MP2629_PROPS(PRECHARGE, 120000, 720000, 40000), + MP2629_PROPS(TERM_CURRENT, 80000, 680000, 40000), +}; + +static const struct reg_field mp2629_reg_fields[] = { + [INPUT_ILIM] = REG_FIELD(MP2629_REG_INPUT_ILIM, 0, 5), + [INPUT_VLIM] = REG_FIELD(MP2629_REG_INPUT_VLIM, 0, 3), + [CHARGE_ILIM] = REG_FIELD(MP2629_REG_CHARGE_ILIM, 0, 6), + [CHARGE_VLIM] = REG_FIELD(MP2629_REG_CHARGE_VLIM, 1, 7), + [PRECHARGE] = REG_FIELD(MP2629_REG_PRECHARGE, 4, 7), + [TERM_CURRENT] = REG_FIELD(MP2629_REG_TERM_CURRENT, 0, 3), +}; + +static char *adc_chan_name[] = { + "mp2629-batt-volt", + "mp2629-system-volt", + "mp2629-input-volt", + "mp2629-batt-current", + "mp2629-input-current", +}; + +static int mp2629_read_adc(struct mp2629_charger *charger, + enum mp2629_adc_chan ch, + union power_supply_propval *val) +{ + int ret; + int chval; + + ret = iio_read_channel_processed(charger->iiochan[ch], &chval); + if (ret < 0) + return ret; + + val->intval = chval * 1000; + + return 0; +} + +static int mp2629_get_prop(struct mp2629_charger *charger, + enum mp2629_field fld, + union power_supply_propval *val) +{ + int ret; + unsigned int rval; + + ret = regmap_field_read(charger->regmap_fields[fld], &rval); + if (!ret) + val->intval = (rval * props[fld].step) + props[fld].min; + + return ret; +} + +static int mp2629_set_prop(struct mp2629_charger *charger, + enum mp2629_field fld, + const union power_supply_propval *val) +{ + unsigned int rval; + + if (val->intval < props[fld].min || val->intval > props[fld].max) + return -EINVAL; + + rval = (val->intval - props[fld].min) / props[fld].step; + return regmap_field_write(charger->regmap_fields[fld], rval); +} + +static int mp2629_get_battery_capacity(struct mp2629_charger *charger, + union power_supply_propval *val) +{ + union power_supply_propval vnow, vlim; + int ret; + + ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, &vnow); + if (ret) + return ret; + + ret = mp2629_get_prop(charger, CHARGE_VLIM, &vlim); + if (ret) + return ret; + + val->intval = (vnow.intval * 100) / vlim.intval; + val->intval = min(val->intval, MP2629_MAX_BATT_CAPACITY); + + return 0; +} + +static int mp2629_charger_battery_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + unsigned int rval; + int ret = 0; + + switch (psp) { + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = mp2629_read_adc(charger, MP2629_BATT_VOLT, val); + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = mp2629_read_adc(charger, MP2629_BATT_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: + val->intval = 4520000; + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE_MAX: + val->intval = 4670000; + break; + + case POWER_SUPPLY_PROP_CAPACITY: + ret = mp2629_get_battery_capacity(charger, val); + break; + + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = mp2629_get_prop(charger, TERM_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = mp2629_get_prop(charger, PRECHARGE, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = mp2629_get_prop(charger, CHARGE_VLIM, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = mp2629_get_prop(charger, CHARGE_ILIM, val); + break; + + case POWER_SUPPLY_PROP_HEALTH: + if (!charger->fault) + val->intval = POWER_SUPPLY_HEALTH_GOOD; + if (MP2629_FAULT_BATTERY & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + else if (MP2629_FAULT_THERMAL & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; + else if (MP2629_FAULT_INPUT & charger->fault) + val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE; + break; + + case POWER_SUPPLY_PROP_STATUS: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3; + switch (rval) { + case 0x00: + val->intval = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + case 0x01: + case 0x10: + val->intval = POWER_SUPPLY_STATUS_CHARGING; + break; + case 0x11: + val->intval = POWER_SUPPLY_STATUS_FULL; + } + break; + + case POWER_SUPPLY_PROP_CHARGE_TYPE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_CHARGE_TYPE) >> 3; + switch (rval) { + case 0x00: + val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; + break; + case 0x01: + val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + break; + case 0x10: + val->intval = POWER_SUPPLY_CHARGE_TYPE_STANDARD; + break; + default: + val->intval = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN; + } + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_battery_set_prop(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT: + ret = mp2629_set_prop(charger, TERM_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_PRECHARGE_CURRENT: + ret = mp2629_set_prop(charger, PRECHARGE, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE: + ret = mp2629_set_prop(charger, CHARGE_VLIM, val); + break; + + case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: + ret = mp2629_set_prop(charger, CHARGE_ILIM, val); + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_usb_get_prop(struct power_supply *psy, + enum power_supply_property psp, + union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + unsigned int rval; + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_ONLINE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (!ret) + val->intval = !!(rval & MP2629_MASK_INPUT_TYPE); + break; + + case POWER_SUPPLY_PROP_USB_TYPE: + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + break; + + rval = (rval & MP2629_MASK_INPUT_TYPE) >> 5; + switch (rval) { + case MP2629_SOURCE_TYPE_SDP: + val->intval = POWER_SUPPLY_USB_TYPE_SDP; + break; + case MP2629_SOURCE_TYPE_CDP: + val->intval = POWER_SUPPLY_USB_TYPE_CDP; + break; + case MP2629_SOURCE_TYPE_DCP: + val->intval = POWER_SUPPLY_USB_TYPE_DCP; + break; + case MP2629_SOURCE_TYPE_OTG: + val->intval = POWER_SUPPLY_USB_TYPE_PD_DRP; + break; + default: + val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN; + break; + } + break; + + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + ret = mp2629_read_adc(charger, MP2629_INPUT_VOLT, val); + break; + + case POWER_SUPPLY_PROP_CURRENT_NOW: + ret = mp2629_read_adc(charger, MP2629_INPUT_CURRENT, val); + break; + + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = mp2629_get_prop(charger, INPUT_VLIM, val); + break; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = mp2629_get_prop(charger, INPUT_ILIM, val); + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_usb_set_prop(struct power_supply *psy, + enum power_supply_property psp, + const union power_supply_propval *val) +{ + struct mp2629_charger *charger = dev_get_drvdata(psy->dev.parent); + int ret; + + switch (psp) { + case POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT: + ret = mp2629_set_prop(charger, INPUT_VLIM, val); + break; + + case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT: + ret = mp2629_set_prop(charger, INPUT_ILIM, val); + break; + + default: + return -EINVAL; + } + + return ret; +} + +static int mp2629_charger_battery_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return (psp == POWER_SUPPLY_PROP_PRECHARGE_CURRENT || + psp == POWER_SUPPLY_PROP_CHARGE_TERM_CURRENT || + psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT || + psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE); +} + +static int mp2629_charger_usb_prop_writeable(struct power_supply *psy, + enum power_supply_property psp) +{ + return (psp == POWER_SUPPLY_PROP_INPUT_VOLTAGE_LIMIT || + psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT); +} + +static void mp2629_charger_work(struct work_struct *work) +{ + struct mp2629_charger *charger; + unsigned int rval; + int ret; + + charger = container_of(work, struct mp2629_charger, charger_work); + + mutex_lock(&charger->lock); + + ret = regmap_read(charger->regmap, MP2629_REG_FAULT, &rval); + if (ret) + goto unlock; + + if (rval) { + charger->fault = rval; + if (MP2629_FAULT_BATTERY & rval) + dev_err(charger->dev, "Battery fault OVP"); + else if (MP2629_FAULT_THERMAL & rval) + dev_err(charger->dev, "Thermal shutdown fault"); + else if (MP2629_FAULT_INPUT & rval) + dev_err(charger->dev, "no input or input OVP"); + else if (MP2629_FAULT_OTG & rval) + dev_err(charger->dev, "VIN overloaded"); + + goto unlock; + } + + ret = regmap_read(charger->regmap, MP2629_REG_STATUS, &rval); + if (ret) + goto unlock; + + if (rval & MP2629_INPUTSOURCE_CHANGE) + power_supply_changed(charger->usb); + else if (rval & MP2629_CHARGING_CHANGE) + power_supply_changed(charger->battery); + +unlock: + mutex_unlock(&charger->lock); +} + +static irqreturn_t mp2629_irq_handler(int irq, void *dev_id) +{ + struct mp2629_charger *charger = dev_id; + + schedule_work(&charger->charger_work); + return IRQ_HANDLED; +} + +static const struct power_supply_desc mp2629_usb_desc = { + .name = "mp2629_usb", + .type = POWER_SUPPLY_TYPE_USB, + .usb_types = mp2629_usb_types, + .num_usb_types = ARRAY_SIZE(mp2629_usb_types), + .properties = mp2629_charger_usb_props, + .num_properties = ARRAY_SIZE(mp2629_charger_usb_props), + .get_property = mp2629_charger_usb_get_prop, + .set_property = mp2629_charger_usb_set_prop, + .property_is_writeable = mp2629_charger_usb_prop_writeable, +}; + +static const struct power_supply_desc mp2629_battery_desc = { + .name = "mp2629_battery", + .type = POWER_SUPPLY_TYPE_BATTERY, + .properties = mp2629_charger_bat_props, + .num_properties = ARRAY_SIZE(mp2629_charger_bat_props), + .get_property = mp2629_charger_battery_get_prop, + .set_property = mp2629_charger_battery_set_prop, + .property_is_writeable = mp2629_charger_battery_prop_writeable, +}; + +static ssize_t batt_impedance_compensation_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct mp2629_charger *charger = dev_get_drvdata(dev->parent); + unsigned int rval; + int ret; + + ret = regmap_read(charger->regmap, MP2629_REG_IMPEDANCE_COMP, &rval); + if (ret < 0) + return ret; + + rval = (rval >> 4) * 10; + + return scnprintf(buf, PAGE_SIZE, "%d mohm\n", rval); +} + +static ssize_t batt_impedance_compensation_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct mp2629_charger *charger = dev_get_drvdata(dev->parent); + long val; + int ret; + + ret = kstrtol(buf, 10, &val); + if (ret < 0) + return ret; + + if (val < 0 && val > 140) + return -ERANGE; + + /* multiples of 10 mohm so round off */ + val = val / 10; + ret = regmap_update_bits(charger->regmap, MP2629_REG_IMPEDANCE_COMP, + MP2629_MASK_IMPEDANCE, val << 4); + if (ret < 0) + return ret; + + return count; +} + +static DEVICE_ATTR_RW(batt_impedance_compensation); + +static struct attribute *mp2629_charger_sysfs_attrs[] = { + &dev_attr_batt_impedance_compensation.attr, + NULL +}; +ATTRIBUTE_GROUPS(mp2629_charger_sysfs); + +static int mp2629_charger_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + void **pdata = pdev->dev.platform_data; + struct mp2629_charger *charger; + struct power_supply_config psy_cfg = {0}; + int ret, i; + + charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL); + if (!charger) + return -ENOMEM; + + charger->regmap = *pdata; + charger->dev = dev; + charger->irq = platform_get_irq(pdev, 0); + platform_set_drvdata(pdev, charger); + + for (i = 0; i <= TERM_CURRENT; i++) { + charger->regmap_fields[i] = devm_regmap_field_alloc(dev, + charger->regmap, mp2629_reg_fields[i]); + if (IS_ERR(charger->regmap_fields[i])) { + dev_err(dev, "regmap field alloc fail %d\n", i); + return PTR_ERR(charger->regmap_fields[i]); + } + } + + for (i = 0; i < MP2629_ADC_CHAN_END; i++) { + charger->iiochan[i] = iio_channel_get(dev, adc_chan_name[i]); + if (IS_ERR(charger->iiochan[i])) { + ret = PTR_ERR(charger->iiochan[i]); + goto iio_fail; + } + } + + charger->usb = devm_power_supply_register(dev, &mp2629_usb_desc, NULL); + if (IS_ERR(charger->usb)) { + ret = PTR_ERR(charger->usb); + goto iio_fail; + } + + psy_cfg.drv_data = charger; + psy_cfg.attr_grp = mp2629_charger_sysfs_groups; + charger->battery = devm_power_supply_register(dev, + &mp2629_battery_desc, &psy_cfg); + if (IS_ERR(charger->battery)) { + ret = PTR_ERR(charger->battery); + goto iio_fail; + } + + ret = regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL, + MP2629_MASK_CHARGE_CTRL, BIT(4)); + if (ret) { + dev_err(dev, "enable charge fail: %d\n", ret); + goto iio_fail; + } + + regmap_update_bits(charger->regmap, MP2629_REG_TIMER_CTRL, + MP2629_MASK_WDOG_CTRL, 0); + + INIT_WORK(&charger->charger_work, mp2629_charger_work); + mutex_init(&charger->lock); + + if (charger->irq) { + ret = devm_request_irq(dev, charger->irq, mp2629_irq_handler, + IRQF_TRIGGER_RISING, "mp2629-charger", + charger); + if (ret) { + dev_err(dev, "failed to request gpio IRQ\n"); + goto iio_fail; + } + } + + regmap_update_bits(charger->regmap, MP2629_REG_INTERRUPT, + GENMASK(6, 5), (BIT(6) | BIT(5))); + + return 0; + +iio_fail: + while (i--) + iio_channel_release(charger->iiochan[i]); + + dev_err(dev, "driver register fail: %d\n", ret); + return ret; +} + +static int mp2629_charger_remove(struct platform_device *pdev) +{ + struct mp2629_charger *charger = platform_get_drvdata(pdev); + int i; + + cancel_work_sync(&charger->charger_work); + + for (i = 0; i < MP2629_ADC_CHAN_END; i++) + iio_channel_release(charger->iiochan[i]); + + regmap_update_bits(charger->regmap, MP2629_REG_CHARGE_CTRL, + MP2629_MASK_CHARGE_CTRL, 0); + return 0; +} + +static const struct of_device_id mp2629_charger_of_match[] = { + { .compatible = "mps,mp2629_charger"}, + {} +}; +MODULE_DEVICE_TABLE(of, mp2629_charger_of_match); + +static struct platform_driver mp2629_charger_driver = { + .driver = { + .name = "mp2629_charger", + .of_match_table = mp2629_charger_of_match, + }, + .probe = mp2629_charger_probe, + .remove = mp2629_charger_remove, +}; +module_platform_driver(mp2629_charger_driver); + +MODULE_AUTHOR("Saravanan Sekar "); +MODULE_DESCRIPTION("MP2629 Charger driver"); +MODULE_LICENSE("GPL"); From patchwork Sun Mar 22 22:30:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: saravanan sekar X-Patchwork-Id: 11452133 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3BDE618A4 for ; Sun, 22 Mar 2020 22:30:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 19AEB20736 for ; Sun, 22 Mar 2020 22:30:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="iNlo842b" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726944AbgCVWag (ORCPT ); Sun, 22 Mar 2020 18:30:36 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:37016 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726945AbgCVWae (ORCPT ); Sun, 22 Mar 2020 18:30:34 -0400 Received: by mail-wr1-f67.google.com with SMTP id w10so14682033wrm.4; Sun, 22 Mar 2020 15:30:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=6QvXfJZlpggMK4ANi6m9pBKzrWALkcbq78l8N8OifPg=; b=iNlo842b2IZbB4k4GNg40U38B5BAXAYpbvKeEk7Dc/+bOAjMapsHryR3aodBMAu0cw EhX70aCHLZUKf86vdEDJn4JFhLVF2jntWk/OioFzw+qYk0hrnj5XNCraPCdso4646mcF jglG6rqrp0Aq1Oqnl7aNsiqiZGSc4c/o43i11Gj1zRCQi5S7eLbfX3hYpnVMePdh3AgH cIJLy+s08J2uO/rTN1btWrg9TCj6fthHcbyW+ackw+jRWPBetHTc0pDig4d3A0bgZrEL Ev6XinvZkDFEQq/CUCyjqNxCU+6DRvWHByc3cJSp3Rw+UtYv6/FFiFLeVcOgyLByp+bL sYxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=6QvXfJZlpggMK4ANi6m9pBKzrWALkcbq78l8N8OifPg=; b=pb8HVAAhl9uqmFGhLAW7M7hz1ehXY7NQtz6hSrsZ8uxP/5jMsJH4Sre4IVpYUbVcw5 p4z60KlIEfYyiwiylUNvebB6Semu/2DWlPSg9EzXh1Pl7xtweIheysCT7gWTmYbvlEBT 2WqnscZnLk9wCzAVY5MlDYET7S+7Dng7CRMt9zLtM7bwmyRvCdxkjcX3F9CAZNRW5n5y Jvvh+lOv8Y2bwIOJiSTKVXIkCu6xvHWaIa/dZkUr9QHo2SJ2LkXv/tm003z9HQilrX80 7C35QNuVtatxGTLLezVgzYnW5xDfcAiJmc31K4q3gkncd80mtXVMq8hq8PRkLdPqwwEM wivw== X-Gm-Message-State: ANhLgQ0e/MxTzPv5xNZes+tTMPP3Oz1X/WOHnAV2YMT2IzXlqYV87Ran jMYdC5xUPulUQxjikjb+FfQ= X-Google-Smtp-Source: ADFU+vtdKjMEZ3M5NceBBY7KjXw4/hbXmYf/MhFtXlDNzKjzmO9VqLfZH/7KCuV2EVVjaBeh5Dls6w== X-Received: by 2002:adf:eb51:: with SMTP id u17mr27376880wrn.29.1584916231767; Sun, 22 Mar 2020 15:30:31 -0700 (PDT) Received: from localhost.localdomain (p5DCFFFE5.dip0.t-ipconnect.de. [93.207.255.229]) by smtp.gmail.com with ESMTPSA id p13sm8060517wru.3.2020.03.22.15.30.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 22 Mar 2020 15:30:31 -0700 (PDT) From: Saravanan Sekar To: lee.jones@linaro.org, robh+dt@kernel.org, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, sre@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-pm@vger.kernel.org, Saravanan Sekar Subject: [PATCH v3 5/5] MAINTAINERS: Add entry for mp2629 Battery Charger driver Date: Sun, 22 Mar 2020 23:30:16 +0100 Message-Id: <20200322223016.11509-6-sravanhome@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200322223016.11509-1-sravanhome@gmail.com> References: <20200322223016.11509-1-sravanhome@gmail.com> Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add MAINTAINERS entry for Monolithic Power Systems mp2629 Charger driver. Signed-off-by: Saravanan Sekar --- MAINTAINERS | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 32a95d162f06..0f82d5a7a614 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11358,10 +11358,15 @@ F: drivers/tty/mxser.* MONOLITHIC POWER SYSTEM PMIC DRIVER M: Saravanan Sekar S: Maintained +F: Documentation/devicetree/bindings/mfd/mps,mp2629.yaml F: Documentation/devicetree/bindings/regulator/mps,mp*.yaml +F: drivers/iio/adc/mp2629_adc.c +F: drivers/mfd/mp2629.c +F: drivers/power/supply/mp2629_charger.c F: drivers/regulator/mp5416.c F: drivers/regulator/mpq7920.c F: drivers/regulator/mpq7920.h +F: include/linux/mfd/mp2629.h MR800 AVERMEDIA USB FM RADIO DRIVER M: Alexey Klimov