From patchwork Thu May 30 23:11:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vijay Khemka X-Patchwork-Id: 10969331 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D9FD313AD for ; Thu, 30 May 2019 23:12:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C17F128BE3 for ; Thu, 30 May 2019 23:12:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9AB0928BEE; Thu, 30 May 2019 23:12:09 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI 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 48CB128BE3 for ; Thu, 30 May 2019 23:12:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726442AbfE3XMI (ORCPT ); Thu, 30 May 2019 19:12:08 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:47352 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726355AbfE3XMH (ORCPT ); Thu, 30 May 2019 19:12:07 -0400 Received: from pps.filterd (m0109334.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x4UN7gmZ004618 for ; Thu, 30 May 2019 16:12:06 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=facebook; bh=ISMJdAwLuDf+RHr6B/ygz/5rPfVKSIHAc3g2BOzRlmE=; b=SWJixcSSQ1w/C41yhh8po8F8Szh7KTlztfLKx17Yc11Z7xZWN9U4RQ1RGBdWJT+BIQxm XBnCZtT/uINpGlYwFBE7orxWJAHh2ZC4I5vBnFvDolwSb1ZgXTLxzEU1KJtJwgPzchCw X3qN957j6Hmb0oKIoaYadE7h0QbKiVVYPn8= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2sthkssm8n-8 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 30 May 2019 16:12:06 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::125) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Thu, 30 May 2019 16:12:04 -0700 Received: by devvm4117.prn2.facebook.com (Postfix, from userid 167582) id D9A91E9320CA; Thu, 30 May 2019 16:12:01 -0700 (PDT) Smtp-Origin-Hostprefix: devvm From: Vijay Khemka Smtp-Origin-Hostname: devvm4117.prn2.facebook.com To: Jean Delvare , Guenter Roeck , Jonathan Corbet , , , CC: , , , , Greg Kroah-Hartman Smtp-Origin-Cluster: prn2c23 Subject: [PATCH v2 1/2] hwmon: pmbus: Add Infineon PXE1610 VR driver Date: Thu, 30 May 2019 16:11:56 -0700 Message-ID: <20190530231159.222188-1-vijaykhemka@fb.com> X-Mailer: git-send-email 2.17.1 X-FB-Internal: Safe MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-30_14:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905300162 X-FB-Internal: deliver Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Added pmbus driver for the new device Infineon pxe1610 voltage regulator. It also supports similar family device PXE1110 and PXM1310. Signed-off-by: Vijay Khemka --- Changes in v2: incorporated all the feedback from Guenter Roeck drivers/hwmon/pmbus/Kconfig | 9 +++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/pxe1610.c | 139 ++++++++++++++++++++++++++++++++++ 3 files changed, 149 insertions(+) create mode 100644 drivers/hwmon/pmbus/pxe1610.c diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 30751eb9550a..338ef9b5a395 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -154,6 +154,15 @@ config SENSORS_MAX8688 This driver can also be built as a module. If so, the module will be called max8688. +config SENSORS_PXE1610 + tristate "Infineon PXE1610" + help + If you say yes here you get hardware monitoring support for Infineon + PXE1610. + + This driver can also be built as a module. If so, the module will + be called pxe1610. + config SENSORS_TPS40422 tristate "TI TPS40422" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 2219b9300316..b0fbd017a91a 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_SENSORS_MAX20751) += max20751.o obj-$(CONFIG_SENSORS_MAX31785) += max31785.o obj-$(CONFIG_SENSORS_MAX34440) += max34440.o obj-$(CONFIG_SENSORS_MAX8688) += max8688.o +obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o diff --git a/drivers/hwmon/pmbus/pxe1610.c b/drivers/hwmon/pmbus/pxe1610.c new file mode 100644 index 000000000000..ebe3f023f840 --- /dev/null +++ b/drivers/hwmon/pmbus/pxe1610.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon PXE1610 + * + * Copyright (c) 2019 Facebook Inc + * + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +#define PXE1610_NUM_PAGES 3 + +/* Identify chip parameters. */ +static int pxe1610_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE)) { + u8 vout_mode; + int ret; + + /* Read the register with VOUT scaling value.*/ + ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); + if (ret < 0) + return ret; + + vout_mode = ret & GENMASK(4, 0); + + switch (vout_mode) { + case 1: + info->vrm_version = vr12; + break; + case 2: + info->vrm_version = vr13; + break; + default: + return -ENODEV; + } + } + + return 0; +} + +static struct pmbus_driver_info pxe1610_info = { + .pages = PXE1610_NUM_PAGES, + .format[PSC_VOLTAGE_IN] = linear, + .format[PSC_VOLTAGE_OUT] = vid, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = linear, + .format[PSC_TEMPERATURE] = linear, + .format[PSC_POWER] = linear, + .func[0] = PMBUS_HAVE_VIN + | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN + | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN + | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, + .func[1] = PMBUS_HAVE_VIN + | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN + | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN + | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, + .func[2] = PMBUS_HAVE_VIN + | PMBUS_HAVE_VOUT | PMBUS_HAVE_IIN + | PMBUS_HAVE_IOUT | PMBUS_HAVE_PIN + | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_TEMP, + .identify = pxe1610_identify, +}; + +static int pxe1610_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct pmbus_driver_info *info; + u8 buf[I2C_SMBUS_BLOCK_MAX]; + int ret; + + if (!i2c_check_functionality( + client->adapter, + I2C_FUNC_SMBUS_READ_BYTE_DATA + | I2C_FUNC_SMBUS_READ_WORD_DATA + | I2C_FUNC_SMBUS_READ_BLOCK_DATA)) + return -ENODEV; + + /* + * By default this device doesn't boot to page 0, so set page 0 + * to access all pmbus registers. + */ + i2c_smbus_write_byte_data(client, PMBUS_PAGE, 0); + + /* Read Manufacturer id */ + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf); + if (ret < 0) { + dev_err(&client->dev, "Failed to read PMBUS_MFR_ID\n"); + return ret; + } + if (ret != 2 || strncmp(buf, "XP", 2)) { + dev_err(&client->dev, "MFR_ID unrecognized\n"); + return -ENODEV; + } + + info = devm_kmemdup(&client->dev, &pxe1610_info, + sizeof(struct pmbus_driver_info), + GFP_KERNEL); + if (!info) + return -ENOMEM; + + return pmbus_do_probe(client, id, info); +} + +static const struct i2c_device_id pxe1610_id[] = { + {"pxe1610", 0}, + {"pxe1110", 0}, + {"pxm1310", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, pxe1610_id); + +static struct i2c_driver pxe1610_driver = { + .driver = { + .name = "pxe1610", + }, + .probe = pxe1610_probe, + .remove = pmbus_do_remove, + .id_table = pxe1610_id, +}; + +module_i2c_driver(pxe1610_driver); + +MODULE_AUTHOR("Vijay Khemka "); +MODULE_DESCRIPTION("PMBus driver for Infineon PXE1610, PXE1110 and PXM1310"); +MODULE_LICENSE("GPL");