From patchwork Mon Apr 15 21:44:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Leis X-Patchwork-Id: 10901627 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 A3A691390 for ; Mon, 15 Apr 2019 21:44:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7EE61288DB for ; Mon, 15 Apr 2019 21:44:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6FF13288DA; Mon, 15 Apr 2019 21:44:11 +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=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL 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 47C0C288DA for ; Mon, 15 Apr 2019 21:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726609AbfDOVoJ (ORCPT ); Mon, 15 Apr 2019 17:44:09 -0400 Received: from mail-vk1-f202.google.com ([209.85.221.202]:39034 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725804AbfDOVoJ (ORCPT ); Mon, 15 Apr 2019 17:44:09 -0400 Received: by mail-vk1-f202.google.com with SMTP id b75so8340407vke.6 for ; Mon, 15 Apr 2019 14:44:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=VV7XloQhp0B7U8+StMP/7Qa3JavzJTcqnL1vFl0AldQ=; b=rS1EfD5QdTwcrhBrJC2NhQIiMPe6W3Ijka6bASxyxxfM+RuiFfZbMV4/0uB2zsFVGo VnAHfapCB7ND02qzfe6kZmSOuafKCqUSqMfLWNwUHcv0ZzO/EZy205NeesRqindtfBnx QVyH0M/+rd1SIfgPmlyeU/XE/RdqjPTr66oxhxoTiG3VfwWEezBv7i9RDUmUnCwLb1FJ G2dizn+lJp+qah62pXHFrACdaOsVJrsW2QIgayi0vgtph3mqGzW28Ob8uGRztC228BAd HT1kJS4PWtnjWiKwWT/h12NxRukQzzpwOsB/mYrP8FoJo5E6xRO6C6hbsmWfBIEZWIuF LbxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=VV7XloQhp0B7U8+StMP/7Qa3JavzJTcqnL1vFl0AldQ=; b=W+3uXD9ocX3Pyc9ekNO4Ceb73M3LQuvvL4Vm9OawZl8C6A+BjRgJe5ed4gqCMuGfY/ wfotFdHfrj1QJx5gUKp8lKEV4FK2gZUCBeq23iqaYJ/0YZ68Zj5Sc0z18toeU78DBaF1 ljeH7k9zB1C602l54RfnRMS0y0lYQTt8L5QyIYLWRPgEoxGf2ddMfk5kY6f/owbDfsTG ioaKQ7aYSmzMBjkHxycI8PE5ujt6r2OIhBL+w9U/gyMYbkra6DRDXBd2+eU7eaI+UHmd uKrZVsyvVgF9q8j7OoYyZRmUlJ+Gar8EQxQPLOtt//hiB7T4Dw2Uae01itu686Y9wDt+ muiw== X-Gm-Message-State: APjAAAXr/PQBLOID2HEZ67Zylg4PgSoItK0G8QbkVr27qgMBydFCntfE kqvt2RBA4mqAPZKKcbJsran9nF8OvP7Z X-Google-Smtp-Source: APXvYqyT7YNDoAsQ9k6ucFSPExKmhs62/MHzRZA2QyPMVDAqw1Rp0L0mJ95fjsXmvQWo7FcvQOPuYMj2eFTP X-Received: by 2002:a67:e24b:: with SMTP id w11mr475329vse.0.1555364648321; Mon, 15 Apr 2019 14:44:08 -0700 (PDT) Date: Mon, 15 Apr 2019 14:44:05 -0700 Message-Id: <20190415214405.120110-1-venture@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog Subject: [PATCH v5 1/2] pmbus: support for custom sysfs attributes From: Patrick Venture To: venture@google.com, linux@roeck-us.net, jdelvare@suse.com Cc: krzysztof.adamski@nokia.com, linux-hwmon@vger.kernel.org, alexander.sverdlin@nokia.com 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 From: krzysztof.adamski@nokia.com This patch makes it possible to pass custom struct attribute_group array via the pmbus_driver_info struct so that those can be added to the attribute groups passed to hwmon_device_register_with_groups(). This makes it possible to register custom sysfs attributes by PMBUS drivers similar to how you can do this with most other busses/classes. Signed-off-by: Krzysztof Adamski --- V5: None v4: None v3: - staged before v3 hwmon/pmbus/isl68137 driver --- drivers/hwmon/pmbus/pmbus.h | 3 +++ drivers/hwmon/pmbus/pmbus_core.c | 13 ++++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/pmbus.h b/drivers/hwmon/pmbus/pmbus.h index 1d24397d36ecd..fb267ec116235 100644 --- a/drivers/hwmon/pmbus/pmbus.h +++ b/drivers/hwmon/pmbus/pmbus.h @@ -417,6 +417,9 @@ struct pmbus_driver_info { /* Regulator functionality, if supported by this chip driver. */ int num_regulators; const struct regulator_desc *reg_desc; + + /* custom attributes */ + const struct attribute_group **groups; }; /* Regulator ops */ diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index e2366428a9a91..d6170a802c0f7 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -103,7 +103,7 @@ struct pmbus_data { int max_attributes; int num_attributes; struct attribute_group group; - const struct attribute_group *groups[2]; + const struct attribute_group **groups; struct dentry *debugfs; /* debugfs device directory */ struct pmbus_sensor *sensors; @@ -2305,6 +2305,7 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id, struct device *dev = &client->dev; const struct pmbus_platform_data *pdata = dev_get_platdata(dev); struct pmbus_data *data; + size_t groups_num = 0; int ret; if (!info) @@ -2319,6 +2320,15 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id, if (!data) return -ENOMEM; + if (info->groups) + while (info->groups[groups_num]) + groups_num++; + + data->groups = devm_kcalloc(dev, groups_num + 2, sizeof(void *), + GFP_KERNEL); + if (!data->groups) + return -ENOMEM; + i2c_set_clientdata(client, data); mutex_init(&data->update_lock); data->dev = dev; @@ -2346,6 +2356,7 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id, } data->groups[0] = &data->group; + memcpy(data->groups + 1, info->groups, sizeof(void *) * groups_num); data->hwmon_dev = hwmon_device_register_with_groups(dev, client->name, data, data->groups); if (IS_ERR(data->hwmon_dev)) { From patchwork Mon Apr 15 21:44:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Leis X-Patchwork-Id: 10901629 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 79AD91390 for ; Mon, 15 Apr 2019 21:44:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5FC15288DA for ; Mon, 15 Apr 2019 21:44:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 53FC9288DC; Mon, 15 Apr 2019 21:44:23 +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=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL 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 80115288DA for ; 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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=hUfVCkJTScphXKAuEDAByy/TrlCOqBdqVQX+1XlCXds=; b=oKbThZ01Re6MT0BnVoI+kgNbPfQZwHs4H0Ae43vWU3ikp/NDtz9yGQ5ksFyY/43qdy iSn0ZT0nTjmce9h3tY9KEvKOgWYVZb0gk114FRyhiAC97iUND8aKLh33jtlzZADTXRBI /7raPtZgmz5eWe6JZWRhu0sbHL842fSd5WVcziqMaGFPuUnxTFC8gEZAgX4FR55HKxQH lkObZ9W2NYKSlp/ftj7YFhw1oHp5ejPLIjQPWbLcwSM2xO0WWkS+1j4wazS3OzPMGOJD bG1Qx9gWPBO8IDUZf8ayH80ExpdgqGwrPNGgmoD+9VwzZNSLAgLVq78he/C6xuyMH1bP mehA== X-Gm-Message-State: APjAAAWm7U7Hg0I1kDoFj1fHqEDXxuSruVR4c9gr7VaT1oXy+vfStilG VDLn/PUnZL8EIuzxbSIlcf7W/vRYdgzk X-Google-Smtp-Source: APXvYqz4pVeWnes1GYq7UD7cOnDwpPhgBYxD0YiOGLLqGjMSfxiqKYnUl+as6vHA9J+ywmEZhroTPbiUQrD6 X-Received: by 2002:a62:1f1b:: with SMTP id f27mr1592785pff.21.1555364658340; Mon, 15 Apr 2019 14:44:18 -0700 (PDT) Date: Mon, 15 Apr 2019 14:44:14 -0700 Message-Id: <20190415214414.120944-1-venture@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.21.0.392.gf8f6787159e-goog Subject: [PATCH v5 2/2] hwmon: (pmbus/isl68137): Add driver for Intersil ISL68137 PWM Controller From: Patrick Venture To: venture@google.com, linux@roeck-us.net, jdelvare@suse.com, joel@jms.id.au, andrew@aj.id.au Cc: Maxim Sloyko , kunyi@google.com, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Robert Lippert 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 From: Maxim Sloyko Intersil ISL68137 is a digital output 7-phase configurable PWM controller with an AVSBus interface. Signed-off-by: Maxim Sloyko Signed-off-by: Robert Lippert Signed-off-by: Patrick Venture --- v5: Drop extra parens Drop extra parameter check v4: Use kstrtobool Cleanup parens Use rc instead of temporary int Delete unnecessary coment Add remove to driver structure v3: Added missing driver documentation Cleaned up goto statements. Add missing error check on pmbus_read_word_data Transitioned to use SENSOR_DEVICE_ATTR_RW Renamed enabled attribute to enable Set up an attribute_group for the enable attribute and added to pmbus_info Removed the boilerplate driver remove method v2: Fixed bad header ordering. v1: Original new patchset with fixes from Rob Lippert. --- Documentation/hwmon/isl68137 | 72 ++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 ++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/isl68137.c | 172 +++++++++++++++++++++++++++++++++ 4 files changed, 254 insertions(+) create mode 100644 Documentation/hwmon/isl68137 create mode 100644 drivers/hwmon/pmbus/isl68137.c diff --git a/Documentation/hwmon/isl68137 b/Documentation/hwmon/isl68137 new file mode 100644 index 0000000000000..92e5c5fc5b777 --- /dev/null +++ b/Documentation/hwmon/isl68137 @@ -0,0 +1,72 @@ +Kernel driver isl68137 +====================== + +Supported chips: + * Intersil ISL68137 + Prefix: 'isl68137' + Addresses scanned: - + Datasheet: Publicly available at the Intersil website + https://www.intersil.com/content/dam/Intersil/documents/isl6/isl68137.pdf + +Authors: + Maxim Sloyko + Robert Lippert + Patrick Venture + +Description +----------- + +Intersil ISL68137 is a digital output 7-phase configurable PWM +controller with an AVSBus interface. + +Usage Notes +----------- + +This driver does not probe for PMBus devices. You will have to instantiate +devices explicitly. + +The ISL68137 AVS operation mode must be enabled/disabled at runtime. + +Beyond the normal sysfs pmbus attributes, the driver exposes a control attribute. + +Additional Sysfs attributes +--------------------------- + +avs(0|1)_enable Controls the AVS state of each rail. + +curr1_label "iin" +curr1_input Measured input current +curr1_crit Critical maximum current +curr1_crit_alarm Current critical high alarm + +curr[2-3]_label "iout[1-2]" +curr[2-3]_input Measured output current +curr[2-3]_crit Critical maximum current +curr[2-3]_crit_alarm Current critical high alarm + +in1_label "vin" +in1_input Measured input voltage +in1_lcrit Critical minimum input voltage +in1_lcrit_alarm Input voltage critical low alarm +in1_crit Critical maximum input voltage +in1_crit_alarm Input voltage critical high alarm + +in[2-3]_label "vout[1-2]" +in[2-3]_input Measured output voltage +in[2-3]_lcrit Critical minimum output voltage +in[2-3]_lcrit_alarm Output voltage critical low alarm +in[2-3]_crit Critical maximum output voltage +in[2-3]_crit_alarm Output voltage critical high alarm + +power1_label "pin" +power1_input Measured input power +power1_alarm Input power high alarm + +power[2-3]_label "pout[1-2]" +power[2-3]_input Measured output power + +temp[1-3]_input Measured temperature +temp[1-3]_crit Critical high temperature +temp[1-3]_crit_alarm Chip temperature critical high alarm +temp[1-3]_max Maximum temperature +temp[1-3]_max_alarm Chip temperature high alarm diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index de87abab990e5..7edab7e30eaf9 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -63,6 +63,15 @@ config SENSORS_IR38064 This driver can also be built as a module. If so, the module will be called ir38064. +config SENSORS_ISL68137 + tristate "Intersil ISL68137" + help + If you say yes here you get hardware monitoring support for Intersil + ISL68137. + + This driver can also be built as a module. If so, the module will + be called isl68137. + config SENSORS_LM25066 tristate "National Semiconductor LM25066 and compatibles" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index 7d1fa6b3c8c93..2219b93003167 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o obj-$(CONFIG_SENSORS_IBM_CFFPS) += ibm-cffps.o obj-$(CONFIG_SENSORS_IR35221) += ir35221.o obj-$(CONFIG_SENSORS_IR38064) += ir38064.o +obj-$(CONFIG_SENSORS_ISL68137) += isl68137.o obj-$(CONFIG_SENSORS_LM25066) += lm25066.o obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o diff --git a/drivers/hwmon/pmbus/isl68137.c b/drivers/hwmon/pmbus/isl68137.c new file mode 100644 index 0000000000000..4140c52d6f124 --- /dev/null +++ b/drivers/hwmon/pmbus/isl68137.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Intersil ISL68137 + * + * Copyright (c) 2017 Google Inc + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "pmbus.h" + +#define ISL68137_VOUT_AVS 0x30 + +static ssize_t isl68137_avs_enable_show_page(struct i2c_client *client, + int page, + char *buf) +{ + int val = pmbus_read_byte_data(client, page, PMBUS_OPERATION); + + return sprintf(buf, "%d\n", + (val & ISL68137_VOUT_AVS) == ISL68137_VOUT_AVS ? 1 : 0); +} + +static ssize_t isl68137_avs_enable_store_page(struct i2c_client *client, + int page, + const char *buf, size_t count) +{ + int rc, op_val; + bool result; + + rc = kstrtobool(buf, &result); + if (!rc) + return -EINVAL; + + op_val = result ? ISL68137_VOUT_AVS : 0; + + /* + * Writes to VOUT setpoint over AVSBus will persist after the VRM is + * switched to PMBus control. Switching back to AVSBus control + * restores this persisted setpoint rather than re-initializing to + * PMBus VOUT_COMMAND. Writing VOUT_COMMAND first over PMBus before + * enabling AVS control is the workaround. + */ + if (op_val == ISL68137_VOUT_AVS) { + rc = pmbus_read_word_data(client, page, PMBUS_VOUT_COMMAND); + if (rc < 0) + return rc; + + rc = pmbus_write_word_data(client, page, PMBUS_VOUT_COMMAND, + rc); + if (rc < 0) + return rc; + } + + rc = pmbus_update_byte_data(client, page, PMBUS_OPERATION, + ISL68137_VOUT_AVS, op_val); + + return (rc < 0) ? rc : count; +} + +static ssize_t isl68137_avs_enable_show(struct device *dev, + struct device_attribute *devattr, + char *buf) +{ + struct i2c_client *client = to_i2c_client(dev->parent); + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + + return isl68137_avs_enable_show_page(client, attr->index, buf); +} + +static ssize_t isl68137_avs_enable_store(struct device *dev, + struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev->parent); + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); + + return isl68137_avs_enable_store_page(client, attr->index, buf, count); +} + +static SENSOR_DEVICE_ATTR_RW(avs0_enable, isl68137_avs_enable, 0); +static SENSOR_DEVICE_ATTR_RW(avs1_enable, isl68137_avs_enable, 1); + +static struct attribute *enable_attrs[] = { + &sensor_dev_attr_avs0_enable.dev_attr.attr, + &sensor_dev_attr_avs1_enable.dev_attr.attr, + NULL, +}; + +static const struct attribute_group enable_group = { + .attrs = enable_attrs, +}; + +static const struct attribute_group *attribute_groups[] = { + &enable_group, + NULL, +}; + +static struct pmbus_driver_info isl68137_info = { + .pages = 2, + .format[PSC_VOLTAGE_IN] = direct, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_CURRENT_IN] = direct, + .format[PSC_CURRENT_OUT] = direct, + .format[PSC_POWER] = direct, + .format[PSC_TEMPERATURE] = direct, + .m[PSC_VOLTAGE_IN] = 1, + .b[PSC_VOLTAGE_IN] = 0, + .R[PSC_VOLTAGE_IN] = 3, + .m[PSC_VOLTAGE_OUT] = 1, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = 3, + .m[PSC_CURRENT_IN] = 1, + .b[PSC_CURRENT_IN] = 0, + .R[PSC_CURRENT_IN] = 2, + .m[PSC_CURRENT_OUT] = 1, + .b[PSC_CURRENT_OUT] = 0, + .R[PSC_CURRENT_OUT] = 1, + .m[PSC_POWER] = 1, + .b[PSC_POWER] = 0, + .R[PSC_POWER] = 0, + .m[PSC_TEMPERATURE] = 1, + .b[PSC_TEMPERATURE] = 0, + .R[PSC_TEMPERATURE] = 0, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN + | PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 + | PMBUS_HAVE_TEMP3 | PMBUS_HAVE_STATUS_TEMP + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT, + .groups = attribute_groups, +}; + +static int isl68137_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return pmbus_do_probe(client, id, &isl68137_info); +} + +static const struct i2c_device_id isl68137_id[] = { + {"isl68137", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, isl68137_id); + +/* This is the driver that will be inserted */ +static struct i2c_driver isl68137_driver = { + .driver = { + .name = "isl68137", + }, + .probe = isl68137_probe, + .remove = pmbus_do_remove, + .id_table = isl68137_id, +}; + +module_i2c_driver(isl68137_driver); + +MODULE_AUTHOR("Maxim Sloyko "); +MODULE_DESCRIPTION("PMBus driver for Intersil ISL68137"); +MODULE_LICENSE("GPL"); -- 2.21.0.392.gf8f6787159e-goog