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[172.89.102.93]) by smtp.gmail.com with ESMTPSA id 188sm2588231pfd.9.2016.11.02.01.38.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 02 Nov 2016 01:38:06 -0700 (PDT) From: Richard Vidal-Dorsch To: linus.walleij@linaro.org, gnurou@gmail.com, jdelvare@suse.com, linux@roeck-us.net, wsa@the-dreams.de, lee.jones@linaro.org, jingoohan1@gmail.com, tomi.valkeinen@ti.com, wim@iguana.be, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-i2c@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-watchdog@vger.kernel.org, k.kozlowski@samsung.com Cc: Richard Vidal-Dorsch , jo.sunga@advantech.com, weilun.huang@advantech.com, andrew.chou@advantech.com Subject: [PATCH v4 3/6] Add Advantech iManager HWmon driver Date: Wed, 2 Nov 2016 01:37:48 -0700 Message-Id: <20161102083751.6335-4-richard.dorsch@gmail.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: <20161102083751.6335-1-richard.dorsch@gmail.com> References: <20161102083751.6335-1-richard.dorsch@gmail.com> Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Richard Vidal-Dorsch --- drivers/hwmon/Kconfig | 11 + drivers/hwmon/Makefile | 1 + drivers/hwmon/imanager-hwmon.c | 1226 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1238 insertions(+) create mode 100644 drivers/hwmon/imanager-hwmon.c diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 45cef3d..7a9db12 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -625,6 +625,17 @@ config SENSORS_CORETEMP sensor inside your CPU. Most of the family 6 CPUs are supported. Check Documentation/hwmon/coretemp for details. +config SENSORS_IMANAGER + tristate "Advantech iManager Hardware Monitoring" + depends on MFD_IMANAGER + select HWMON_VID + help + This enables support for Advantech iManager hardware monitoring + of some Advantech SOM, MIO, AIMB, and PCM modules/boards. + + This driver can also be built as a module. If so, the module + will be called imanager-hwmon. + config SENSORS_IT87 tristate "ITE IT87xx and compatibles" depends on !PPC diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile index aecf4ba..3f489ae 100644 --- a/drivers/hwmon/Makefile +++ b/drivers/hwmon/Makefile @@ -76,6 +76,7 @@ obj-$(CONFIG_SENSORS_IBMAEM) += ibmaem.o obj-$(CONFIG_SENSORS_IBMPEX) += ibmpex.o obj-$(CONFIG_SENSORS_IBMPOWERNV)+= ibmpowernv.o obj-$(CONFIG_SENSORS_IIO_HWMON) += iio_hwmon.o +obj-$(CONFIG_SENSORS_IMANAGER) += imanager-hwmon.o obj-$(CONFIG_SENSORS_INA209) += ina209.o obj-$(CONFIG_SENSORS_INA2XX) += ina2xx.o obj-$(CONFIG_SENSORS_INA3221) += ina3221.o diff --git a/drivers/hwmon/imanager-hwmon.c b/drivers/hwmon/imanager-hwmon.c new file mode 100644 index 0000000..af72c35 --- /dev/null +++ b/drivers/hwmon/imanager-hwmon.c @@ -0,0 +1,1226 @@ +/* + * Advantech iManager Hardware Monitoring driver + * Partially derived from nct6775 + * + * Copyright (C) 2016 Advantech Co., Ltd. + * Author: Richard Vidal-Dorsch + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Voltage computation (10-bit ADC, 0..3V input) */ +#define SCALE_IN 2933 /* (3000mV / (2^10 - 1)) * 1000 */ + +#define HWM_STATUS_UNDEFINED_ITEM 2UL +#define HWM_STATUS_UNDEFINED_DID 3UL +#define HWM_STATUS_UNDEFINED_HWPIN 4UL + +/* iManager EC FW pwm[1-*]_mode values are switched */ +enum imanager_pwm_mode { CTRL_PWM, CTRL_RPM }; +/* EC FW defines pwm_enable mode 'full speed' besides mode 'off' */ +enum imanager_pwm_enable { MODE_OFF, MODE_FULL, MODE_MANUAL, MODE_AUTO }; + +/* + * iManager FAN device defs + */ +struct fan_dev_config { + u8 did, + hwpin, + tachoid, + status, + control, + temp_max, + temp_min, + temp_stop, + pwm_max, + pwm_min; + u16 rpm_max; + u16 rpm_min; + u8 debounce; /* debounce time, not used */ + u8 temp; /* Current Thermal Zone Temperature */ + u16 rpm_target; /* RPM Target Speed, not used */ +} __attribute__((__packed__)); + +struct fan_alert_limit { + u16 min, + max; +} __attribute__((__packed__)); + +struct fan_status { + u32 sysctl : 1, /* System Control flag */ + tacho : 1, /* FAN tacho source defined */ + pulse : 1, /* FAN pulse type defined */ + thermal : 1, /* Thermal zone init */ + i2clink : 1, /* I2C protocol fail flag (thermal sensor) */ + dnc : 1, /* don't care */ + mode : 2; /* FAN Control mode */ +}; + +/** + * FAN Control bit field + * enable: 0:Disabled, 1:Enabled + * type: 0:PWM, 1:RPM + * pulse: 0:Undefined 1:2 Pulses 2:4 Pulses + * tacho: 1:CPU FAN, 2:SYS FAN1, 3:SYS FAN2 + * mode: 0:Off, 1:Full, 2:Manual, 3:Auto + */ +struct fan_ctrl { + u32 enable : 1, /* SmartFAN control on/off */ + type : 1, /* FAN control type [0, 1] PWM/RPM */ + pulse : 2, /* FAN pulse [0..2] */ + tacho : 2, /* FAN Tacho Input [1..3] */ + mode : 2; /* off/full/manual/auto */ +}; + +/* Default Voltage Sensors */ +struct imanager_hwmon_adc { + bool valid; /* if set, below values are valid */ + unsigned int value; + unsigned int min; + unsigned int max; + unsigned int average; + unsigned int lowest; + unsigned int highest; +}; + +struct imanager_hwmon_smartfan { + bool valid; /* if set, below values are valid */ + unsigned int pwm; + unsigned int speed; + bool speed_min_alarm; + bool speed_max_alarm; + struct fan_dev_config cfg; +}; + +struct imanager_hwmon_data { + struct imanager_device_data *imgr; + const struct attribute_group *groups[3]; + unsigned long samples; + unsigned long last_updated; + struct imanager_hwmon_adc adc[EC_MAX_ADC_NUM]; + struct imanager_hwmon_smartfan fan[EC_MAX_FAN_NUM]; +}; + +static int imanager_hwmon_read_fan_config(struct imanager_ec_data *ec, int num, + struct imanager_hwmon_smartfan *fan) +{ + struct imanager_ec_message msg = { + IMANAGER_MSG_SIMPLE(EC_F_HWMON_MSG, 0, num, (u8 *)&fan->cfg) + }; + int ret; + + ret = imanager_read(ec, EC_CMD_FAN_CTL_RD, &msg); + if (ret) + return ret; + + return fan->cfg.did ? 0 : -ENODEV; +} + +static int +imanager_hwmon_write_fan_config(struct imanager_ec_data *ec, int num, + struct imanager_hwmon_smartfan *fan) +{ + struct imanager_ec_message msg = { + IMANAGER_MSG_SIMPLE(0, sizeof(fan->cfg), num, (u8 *)&fan->cfg) + }; + int err; + + err = imanager_write(ec, EC_CMD_FAN_CTL_WR, &msg); + if (err < 0) { + return err; + } else if (err) { + switch (err) { + case HWM_STATUS_UNDEFINED_ITEM: + case HWM_STATUS_UNDEFINED_DID: + case HWM_STATUS_UNDEFINED_HWPIN: + return -ENODEV; + default: + return -EINVAL; + } + } + + return 0; +} + +/** + * FAN max/min alert bits are stored as bit pairs in a 8-bit register. + * FAN0~2: 2:{max2, min2}, 1:{max1, min1}, 0:{max0, min0} + */ +#define IS_FAN_ALERT_MIN(fan_num, var) test_bit(BIT((fan_num) << 1), var) +#define IS_FAN_ALERT_MAX(fan_num, var) test_bit(BIT(((fan_num) << 1) + 1), var) + +static int imanager_hwmon_read_fan_alert(struct imanager_ec_data *ec, int num, + struct imanager_hwmon_smartfan *fan) +{ + const ulong alert_flags = 0; + int ret; + + ret = imanager_read_ram(ec, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT, + (u8 *)&alert_flags, sizeof(u8)); + if (ret < 0) + return ret; + + fan->speed_min_alarm = IS_FAN_ALERT_MIN(num, &alert_flags); + fan->speed_max_alarm = IS_FAN_ALERT_MAX(num, &alert_flags); + + return 0; +} + +static int imanager_hwmon_write_fan_alert(struct imanager_ec_data *ec, int fnum, + struct imanager_hwmon_smartfan *fan) +{ + struct fan_alert_limit limits[EC_MAX_FAN_NUM]; + struct fan_alert_limit *limit = &limits[fnum]; + int ret; + + ret = imanager_read_ram(ec, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT_LIMIT, + (u8 *)limits, sizeof(limits)); + if (ret < 0) + return ret; + + limit->min = fan->cfg.rpm_min; + limit->max = fan->cfg.rpm_max; + + return imanager_write_ram(ec, EC_RAM_ACPI, EC_OFFSET_FAN_ALERT_LIMIT, + (u8 *)limits, sizeof(limits)); +} + +static int imanager_hwmon_read_adc(struct imanager_ec_data *ec, int num, + struct imanager_hwmon_adc *adc) +{ + struct imanager_device_attribute *attr = ec->hwmon.adc.attr[num]; + int ret; + + adc->valid = false; + + ret = imanager_read16(ec, EC_CMD_HWP_RD, attr->did); + if (ret < 0) + return ret; + + adc->value = ret * attr->ecdev->scale; + adc->valid = true; + + return 0; +} + +static int imanager_hwmon_read_fan_ctrl(struct imanager_ec_data *ec, int num, + struct imanager_hwmon_smartfan *fan) +{ + struct imanager_device_attribute *attr = ec->hwmon.adc.attr[num]; + + int ret; + + fan->valid = false; + + ret = imanager_hwmon_read_fan_config(ec, num, fan); + if (ret < 0) + return ret; + + ret = imanager_read16(ec, EC_CMD_HWP_RD, fan->cfg.tachoid); + if (ret < 0) + return ret; + + fan->speed = ret; + + ret = imanager_read8(ec, EC_CMD_HWP_RD, attr->did); + if (ret < 0) + return ret; + + fan->pwm = ret; + + ret = imanager_hwmon_read_fan_alert(ec, num, fan); + if (ret) + return ret; + + fan->valid = true; + + return 0; +} + +static inline uint in_from_reg(u16 val) +{ + return clamp_val(DIV_ROUND_CLOSEST(val * SCALE_IN, 1000), 0, 65535); +} + +static inline u16 in_to_reg(uint val) +{ + return clamp_val(DIV_ROUND_CLOSEST(val * 1000, SCALE_IN), 0, 65535); +} + +static struct imanager_hwmon_data * +imanager_hwmon_update_device(struct device *dev) +{ + struct imanager_hwmon_data *data = dev_get_drvdata(dev); + struct imanager_device_data *imgr = data->imgr; + struct imanager_ec_data *ec = &imgr->ec; + struct imanager_hwmon_device *hwmon = &ec->hwmon; + int i; + + mutex_lock(&imgr->lock); + + if (time_after(jiffies, data->last_updated + HZ + HZ / 2)) { + /* Measured voltages */ + for (i = 0; i < hwmon->adc.num; i++) + imanager_hwmon_read_adc(ec, i, &data->adc[i]); + + /* Measured fan speeds */ + for (i = 0; i < hwmon->fan.num; i++) + imanager_hwmon_read_fan_ctrl(ec, i, &data->fan[i]); + + data->last_updated = jiffies; + } + + mutex_unlock(&imgr->lock); + + return data; +} + +static ssize_t +show_in(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + + return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].value)); +} + +static ssize_t +show_in_min(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + + return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].min)); +} + +static ssize_t +show_in_max(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + + return sprintf(buf, "%u\n", in_from_reg(data->adc[nr].max)); +} + +static ssize_t +store_in_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + data->adc[nr].min = in_to_reg(val); + + return count; +} + +static ssize_t +store_in_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + unsigned long val; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + data->adc[nr].max = in_to_reg(val); + + return count; +} + +static ssize_t +show_in_alarm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + struct imanager_hwmon_adc *adc = &data->adc[nr]; + int val = 0; + + if (adc->valid) + val = (adc->value < adc->min) || (adc->value > adc->max); + + return sprintf(buf, "%u\n", val); +} + +static ssize_t +show_in_average(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + struct imanager_hwmon_adc *adc = &data->adc[nr]; + + if (adc->average) { + adc->average = DIV_ROUND_CLOSEST(adc->average * data->samples + + adc->value, ++data->samples); + } else { + adc->average = adc->value; + data->samples = 1; + } + + return sprintf(buf, "%u\n", in_from_reg(adc->average)); +} + +static ssize_t +show_in_lowest(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + struct imanager_hwmon_adc *adc = &data->adc[nr]; + + if (!adc->lowest || (adc->value < adc->lowest)) + adc->lowest = adc->value; + + return sprintf(buf, "%u\n", in_from_reg(adc->lowest)); +} + +static ssize_t +show_in_highest(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + struct imanager_hwmon_adc *adc = &data->adc[nr]; + + if (!adc->highest || (adc->value > adc->highest)) + adc->highest = adc->value; + + return sprintf(buf, "%u\n", in_from_reg(adc->highest)); +} + +static ssize_t +store_in_reset_history(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index; + unsigned long reset; + int err; + + err = kstrtoul(buf, 10, &reset); + if (err < 0) + return err; + + if (reset) { + data->adc[nr].lowest = 0; + data->adc[nr].highest = 0; + data->adc[nr].average = 0; + data->samples = 0; + } + + return count; +} + +static ssize_t +show_temp(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%u\n", data->fan[nr].cfg.temp * 1000); +} + +static ssize_t +show_fan_in(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + + return sprintf(buf, "%u\n", fan->valid ? fan->speed : 0); +} + +static inline int check_fan_alarm(const struct imanager_hwmon_smartfan *fan) +{ + int rpm_min = cpu_to_be16(fan->cfg.rpm_min); + int rpm_max = cpu_to_be16(fan->cfg.rpm_max); + + return !fan->valid || fan->speed_min_alarm || fan->speed_max_alarm || + (!fan->speed && fan->pwm) || (fan->speed < rpm_min) || + (fan->speed > rpm_max); +} + +static ssize_t +show_fan_alarm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + bool is_alarm = (ctrl->mode == MODE_AUTO) ? 0 : check_fan_alarm(fan); + + return sprintf(buf, "%u\n", is_alarm); +} + +static ssize_t +show_fan_min(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + int rpm_min = cpu_to_be16(data->fan[nr].cfg.rpm_min); + + return sprintf(buf, "%u\n", rpm_min); +} + +static ssize_t +show_fan_max(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + int rpm_max = cpu_to_be16(data->fan[nr].cfg.rpm_max); + + return sprintf(buf, "%u\n", rpm_max); +} + +static ssize_t +store_fan_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_device_data *imgr = data->imgr; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + unsigned long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + /* do not apply value if not in cruise mode */ + if (ctrl->mode != MODE_AUTO) + return count; + + mutex_lock(&imgr->lock); + fan->cfg.rpm_min = cpu_to_be16(val); + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +store_fan_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_device_data *imgr = data->imgr; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + unsigned long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + /* do not apply value if not in cruise mode */ + if (ctrl->mode != MODE_AUTO) + return count; + + mutex_lock(&imgr->lock); + fan->cfg.rpm_max = cpu_to_be16(val); + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +show_pwm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + u32 val = DIV_ROUND_CLOSEST(data->fan[nr].pwm * 255, 100); + + return sprintf(buf, "%u\n", val); +} + +static ssize_t +store_pwm(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_device_data *imgr = data->imgr; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + int did = imgr->ec.hwmon.fan.attr[nr]->did; + unsigned long pwm = 0; + int err; + + err = kstrtoul(buf, 10, &pwm); + if (err < 0) + return err; + + pwm = DIV_ROUND_CLOSEST(pwm * 100, 255); + + mutex_lock(&imgr->lock); + + if (ctrl->mode == MODE_MANUAL) { + ctrl->type = CTRL_PWM; + ctrl->pulse = 0; + ctrl->enable = 1; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + imanager_write8(&imgr->ec, EC_CMD_HWP_WR, did, pwm); + } else if ((ctrl->mode == MODE_AUTO) && (ctrl->type == CTRL_PWM)) { + ctrl->pulse = 0; + ctrl->enable = 1; + fan->cfg.rpm_min = 0; + fan->cfg.rpm_max = 0; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + imanager_write8(&imgr->ec, EC_CMD_HWP_WR, did, pwm); + imanager_hwmon_write_fan_alert(&imgr->ec, nr, fan); + } + + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +show_pwm_min(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%u\n", data->fan[nr].cfg.pwm_min); +} + +static ssize_t +show_pwm_max(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%u\n", data->fan[nr].cfg.pwm_max); +} + +static ssize_t +show_pwm_enable(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + uint mode = ctrl->mode - 1; + + if (ctrl->mode == MODE_OFF) + mode = 0; + + return sprintf(buf, "%u\n", mode); +} + +enum pwm_enable { OFF, MANUAL, THERMAL_CRUISE }; + +static ssize_t +store_pwm_enable(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + int did = imgr->ec.hwmon.fan.attr[nr]->did; + unsigned long mode = 0; + int err; + + err = kstrtoul(buf, 10, &mode); + if (err < 0) + return err; + + mutex_lock(&imgr->lock); + + switch (mode) { + case OFF: + ctrl->mode = MODE_FULL; + ctrl->type = CTRL_PWM; + ctrl->enable = 1; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + imanager_write8(&imgr->ec, EC_CMD_HWP_WR, did, 100); + break; + case MANUAL: + ctrl->mode = MODE_MANUAL; + ctrl->type = CTRL_PWM; + ctrl->enable = 1; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + imanager_write8(&imgr->ec, EC_CMD_HWP_WR, did, 0); + break; + case THERMAL_CRUISE: + ctrl->mode = MODE_AUTO; + ctrl->enable = 1; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + imanager_write8(&imgr->ec, EC_CMD_HWP_WR, did, 0); + break; + } + + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + uint mode = (ctrl->type == CTRL_PWM) ? 1 : 0; + + if (ctrl->mode == MODE_OFF) + mode = 0; + + return sprintf(buf, "%u\n", mode); +} + +static ssize_t +store_pwm_mode(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + unsigned long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + if (ctrl->mode != MODE_AUTO) + return count; + + mutex_lock(&imgr->lock); + ctrl->type = val ? CTRL_RPM : CTRL_PWM; + ctrl->enable = 1; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +show_temp_min(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%d\n", data->fan[nr].cfg.temp_min * 1000); +} + +static ssize_t +show_temp_max(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%u\n", data->fan[nr].cfg.temp_max * 1000); +} + +static inline bool is_outside(int min, int max, int value) +{ + return (value < min) || (value > max); +} + +static ssize_t +show_temp_alarm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + int nr = to_sensor_dev_attr(attr)->index - 1; + struct fan_dev_config *cfg = &data->fan[nr].cfg; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&cfg->control; + bool is_alarm = (ctrl->mode == MODE_AUTO) ? 0 : + is_outside(cfg->temp_min, cfg->temp_max, cfg->temp); + + return sprintf(buf, "%u\n", is_alarm); +} + +static ssize_t store_temp_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + /* temperature in 1/10 degC */ + val = DIV_ROUND_CLOSEST(val, 1000); + val = val > 100 ? 100 : val; + + /* do not apply value if not in cruise mode */ + if (ctrl->mode != MODE_AUTO) + return count; + + /* + * The iManager provides three different temperature limit values + * (stop, min, and max) where stop indicates a minimum temp value + * (threshold) from which the FAN will turn off. We are setting + * temp_stop to the same value as temp_min since it cannot be mapped + * to anything else. + */ + + mutex_lock(&imgr->lock); + fan->cfg.temp_stop = val; + fan->cfg.temp_min = val; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +store_temp_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + struct fan_ctrl *ctrl = (struct fan_ctrl *)&fan->cfg.control; + long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + val = DIV_ROUND_CLOSEST(val, 1000); + val = val > 100 ? 100 : val; + + /* do not apply value if not in cruise mode */ + if (ctrl->mode != MODE_AUTO) + return count; + + mutex_lock(&imgr->lock); + fan->cfg.temp_max = val; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +store_pwm_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + val = DIV_ROUND_CLOSEST(val * 100, 255); + + mutex_lock(&imgr->lock); + fan->cfg.pwm_min = val; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +store_pwm_max(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_device_data *imgr = data->imgr; + int nr = to_sensor_dev_attr(attr)->index - 1; + struct imanager_hwmon_smartfan *fan = &data->fan[nr]; + long val = 0; + int err; + + err = kstrtoul(buf, 10, &val); + if (err < 0) + return err; + + val = DIV_ROUND_CLOSEST(val * 100, 255); + + mutex_lock(&imgr->lock); + fan->cfg.pwm_max = val; + imanager_hwmon_write_fan_config(&imgr->ec, nr, fan); + mutex_unlock(&imgr->lock); + + return count; +} + +static ssize_t +show_in_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon; + int nr = to_sensor_dev_attr(attr)->index; + + return sprintf(buf, "%s\n", hwmon->adc.label[nr]); +} + +static ssize_t +show_temp_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon; + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%s\n", hwmon->fan.temp_label[nr]); +} + +static ssize_t +show_fan_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct imanager_hwmon_data *data = imanager_hwmon_update_device(dev); + struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon; + int nr = to_sensor_dev_attr(attr)->index - 1; + + return sprintf(buf, "%s\n", hwmon->fan.label[nr]); +} + +/* + * Sysfs callback functions + */ + +static SENSOR_DEVICE_ATTR(in0_label, 0444, show_in_label, NULL, 0); +static SENSOR_DEVICE_ATTR(in0_input, 0444, show_in, NULL, 0); +static SENSOR_DEVICE_ATTR(in0_min, 0644, show_in_min, store_in_min, 0); +static SENSOR_DEVICE_ATTR(in0_max, 0644, show_in_max, store_in_max, 0); +static SENSOR_DEVICE_ATTR(in0_alarm, 0444, show_in_alarm, NULL, 0); + +static SENSOR_DEVICE_ATTR(in1_label, 0444, show_in_label, NULL, 1); +static SENSOR_DEVICE_ATTR(in1_input, 0444, show_in, NULL, 1); +static SENSOR_DEVICE_ATTR(in1_min, 0644, show_in_min, store_in_min, 1); +static SENSOR_DEVICE_ATTR(in1_max, 0644, show_in_max, store_in_max, 1); +static SENSOR_DEVICE_ATTR(in1_alarm, 0444, show_in_alarm, NULL, 1); + +static SENSOR_DEVICE_ATTR(in2_label, 0444, show_in_label, NULL, 2); +static SENSOR_DEVICE_ATTR(in2_input, 0444, show_in, NULL, 2); +static SENSOR_DEVICE_ATTR(in2_min, 0644, show_in_min, store_in_min, 2); +static SENSOR_DEVICE_ATTR(in2_max, 0644, show_in_max, store_in_max, 2); +static SENSOR_DEVICE_ATTR(in2_alarm, 0444, show_in_alarm, NULL, 2); + +static SENSOR_DEVICE_ATTR(temp1_label, 0444, show_temp_label, NULL, 1); +static SENSOR_DEVICE_ATTR(temp1_input, 0444, show_temp, NULL, 1); +static SENSOR_DEVICE_ATTR(temp1_min, 0644, show_temp_min, store_temp_min, 1); +static SENSOR_DEVICE_ATTR(temp1_max, 0644, show_temp_max, store_temp_max, 1); +static SENSOR_DEVICE_ATTR(temp1_alarm, 0444, show_temp_alarm, NULL, 1); + +static SENSOR_DEVICE_ATTR(temp2_label, 0444, show_temp_label, NULL, 2); +static SENSOR_DEVICE_ATTR(temp2_input, 0444, show_temp, NULL, 2); +static SENSOR_DEVICE_ATTR(temp2_min, 0644, show_temp_min, store_temp_min, 2); +static SENSOR_DEVICE_ATTR(temp2_max, 0644, show_temp_max, store_temp_max, 2); +static SENSOR_DEVICE_ATTR(temp2_alarm, 0444, show_temp_alarm, NULL, 2); + +static SENSOR_DEVICE_ATTR(temp3_label, 0444, show_temp_label, NULL, 3); +static SENSOR_DEVICE_ATTR(temp3_input, 0444, show_temp, NULL, 3); +static SENSOR_DEVICE_ATTR(temp3_min, 0644, show_temp_min, store_temp_min, 3); +static SENSOR_DEVICE_ATTR(temp3_max, 0644, show_temp_max, store_temp_max, 3); +static SENSOR_DEVICE_ATTR(temp3_alarm, 0444, show_temp_alarm, NULL, 3); + +static SENSOR_DEVICE_ATTR(fan1_label, 0444, show_fan_label, NULL, 1); +static SENSOR_DEVICE_ATTR(fan1_input, 0444, show_fan_in, NULL, 1); +static SENSOR_DEVICE_ATTR(fan1_min, 0644, show_fan_min, store_fan_min, 1); +static SENSOR_DEVICE_ATTR(fan1_max, 0644, show_fan_max, store_fan_max, 1); +static SENSOR_DEVICE_ATTR(fan1_alarm, 0444, show_fan_alarm, NULL, 1); + +static SENSOR_DEVICE_ATTR(fan2_label, 0444, show_fan_label, NULL, 2); +static SENSOR_DEVICE_ATTR(fan2_input, 0444, show_fan_in, NULL, 2); +static SENSOR_DEVICE_ATTR(fan2_min, 0644, show_fan_min, store_fan_min, 2); +static SENSOR_DEVICE_ATTR(fan2_max, 0644, show_fan_max, store_fan_max, 2); +static SENSOR_DEVICE_ATTR(fan2_alarm, 0444, show_fan_alarm, NULL, 2); + +static SENSOR_DEVICE_ATTR(fan3_label, 0444, show_fan_label, NULL, 3); +static SENSOR_DEVICE_ATTR(fan3_input, 0444, show_fan_in, NULL, 3); +static SENSOR_DEVICE_ATTR(fan3_min, 0644, show_fan_min, store_fan_min, 3); +static SENSOR_DEVICE_ATTR(fan3_max, 0644, show_fan_max, store_fan_max, 3); +static SENSOR_DEVICE_ATTR(fan3_alarm, 0444, show_fan_alarm, NULL, 3); + +static SENSOR_DEVICE_ATTR(pwm1, 0644, show_pwm, store_pwm, 1); +static SENSOR_DEVICE_ATTR(pwm1_min, 0644, show_pwm_min, store_pwm_min, 1); +static SENSOR_DEVICE_ATTR(pwm1_max, 0644, show_pwm_max, store_pwm_max, 1); +static SENSOR_DEVICE_ATTR(pwm1_enable, 0644, show_pwm_enable, + store_pwm_enable, 1); +static SENSOR_DEVICE_ATTR(pwm1_mode, 0644, show_pwm_mode, store_pwm_mode, 1); + +static SENSOR_DEVICE_ATTR(pwm2, 0644, show_pwm, store_pwm, 2); +static SENSOR_DEVICE_ATTR(pwm2_min, 0644, show_pwm_min, store_pwm_min, 2); +static SENSOR_DEVICE_ATTR(pwm2_max, 0644, show_pwm_max, store_pwm_max, 2); +static SENSOR_DEVICE_ATTR(pwm2_enable, 0644, show_pwm_enable, + store_pwm_enable, 2); +static SENSOR_DEVICE_ATTR(pwm2_mode, 0644, show_pwm_mode, store_pwm_mode, 2); + +static SENSOR_DEVICE_ATTR(pwm3, 0644, show_pwm, store_pwm, 3); +static SENSOR_DEVICE_ATTR(pwm3_min, 0644, show_pwm_min, store_pwm_min, 3); +static SENSOR_DEVICE_ATTR(pwm3_max, 0644, show_pwm_max, store_pwm_max, 3); +static SENSOR_DEVICE_ATTR(pwm3_enable, 0644, show_pwm_enable, + store_pwm_enable, 3); +static SENSOR_DEVICE_ATTR(pwm3_mode, 0644, show_pwm_mode, store_pwm_mode, 3); + +static SENSOR_DEVICE_ATTR(curr1_input, 0444, show_in, NULL, 4); +static SENSOR_DEVICE_ATTR(curr1_min, 0644, show_in_min, store_in_min, 4); +static SENSOR_DEVICE_ATTR(curr1_max, 0644, show_in_max, store_in_max, 4); +static SENSOR_DEVICE_ATTR(curr1_alarm, 0444, show_in_alarm, NULL, 4); +static SENSOR_DEVICE_ATTR(curr1_average, 0444, show_in_average, NULL, 4); +static SENSOR_DEVICE_ATTR(curr1_lowest, 0444, show_in_lowest, NULL, 4); +static SENSOR_DEVICE_ATTR(curr1_highest, 0444, show_in_highest, NULL, 4); +static SENSOR_DEVICE_ATTR(curr1_reset_history, 0200, NULL, + store_in_reset_history, 4); + +static SENSOR_DEVICE_ATTR(cpu0_vid, 0444, show_in, NULL, 3); + +static struct attribute *imanager_in_attributes[] = { + &sensor_dev_attr_in0_label.dev_attr.attr, + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in0_alarm.dev_attr.attr, + + &sensor_dev_attr_in1_label.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + + &sensor_dev_attr_in2_label.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + + NULL +}; + +#define to_dev(obj) container_of(obj, struct device, kobj) + +static umode_t +imanager_in_is_visible(struct kobject *kobj, struct attribute *attr, int index) +{ + struct device *dev = to_dev(kobj); + struct imanager_hwmon_data *data = dev_get_drvdata(dev); + struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon; + + if (hwmon->adc.num <= EC_MAX_ADC_NUM) + return attr->mode; + + return 0; +} + +static const struct attribute_group imanager_group_in = { + .attrs = imanager_in_attributes, + .is_visible = imanager_in_is_visible, +}; + +static struct attribute *imanager_other_attributes[] = { + &sensor_dev_attr_curr1_input.dev_attr.attr, + &sensor_dev_attr_curr1_min.dev_attr.attr, + &sensor_dev_attr_curr1_max.dev_attr.attr, + &sensor_dev_attr_curr1_alarm.dev_attr.attr, + &sensor_dev_attr_curr1_average.dev_attr.attr, + &sensor_dev_attr_curr1_lowest.dev_attr.attr, + &sensor_dev_attr_curr1_highest.dev_attr.attr, + &sensor_dev_attr_curr1_reset_history.dev_attr.attr, + + &sensor_dev_attr_cpu0_vid.dev_attr.attr, + + NULL +}; + +static umode_t imanager_other_is_visible(struct kobject *kobj, + struct attribute *attr, int index) +{ + struct device *dev = to_dev(kobj); + struct imanager_hwmon_data *data = dev_get_drvdata(dev); + struct imanager_hwmon_device *hwmon = &data->imgr->ec.hwmon; + + /* + * There are either 3 or 5 VINs available + * vin3 is current monitoring + * vin4 is CPU VID + */ + if (hwmon->adc.num == EC_MAX_ADC_NUM) + return attr->mode; + + return 0; +} + +static const struct attribute_group imanager_group_other = { + .attrs = imanager_other_attributes, + .is_visible = imanager_other_is_visible, +}; + +static struct attribute *imanager_fan_attributes[] = { + &sensor_dev_attr_fan1_label.dev_attr.attr, + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan1_max.dev_attr.attr, + &sensor_dev_attr_fan1_alarm.dev_attr.attr, + + &sensor_dev_attr_fan2_label.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan2_max.dev_attr.attr, + &sensor_dev_attr_fan2_alarm.dev_attr.attr, + + &sensor_dev_attr_fan3_label.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, + &sensor_dev_attr_fan3_max.dev_attr.attr, + &sensor_dev_attr_fan3_alarm.dev_attr.attr, + + &sensor_dev_attr_temp1_label.dev_attr.attr, + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_min.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_alarm.dev_attr.attr, + + &sensor_dev_attr_temp2_label.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_alarm.dev_attr.attr, + + &sensor_dev_attr_temp3_label.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp3_alarm.dev_attr.attr, + + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm1_min.dev_attr.attr, + &sensor_dev_attr_pwm1_max.dev_attr.attr, + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm1_mode.dev_attr.attr, + + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_pwm2_min.dev_attr.attr, + &sensor_dev_attr_pwm2_max.dev_attr.attr, + &sensor_dev_attr_pwm2_enable.dev_attr.attr, + &sensor_dev_attr_pwm2_mode.dev_attr.attr, + + &sensor_dev_attr_pwm3.dev_attr.attr, + &sensor_dev_attr_pwm3_min.dev_attr.attr, + &sensor_dev_attr_pwm3_max.dev_attr.attr, + &sensor_dev_attr_pwm3_enable.dev_attr.attr, + &sensor_dev_attr_pwm3_mode.dev_attr.attr, + + NULL +}; + +static umode_t +imanager_fan_is_visible(struct kobject *kobj, struct attribute *attr, int index) +{ + struct device *dev = to_dev(kobj); + struct imanager_hwmon_data *data = dev_get_drvdata(dev); + struct imanager_fan_device *fan = &data->imgr->ec.hwmon.fan; + + if ((index >= 0) && (index <= 14)) { /* fan */ + if (!fan->attr[index / 5]) + return 0; + } else if ((index >= 15) && (index <= 29)) { /* temp */ + if (!fan->attr[(index - 15) / 5]) + return 0; + } else if ((index >= 30) && (index <= 34)) { /* pwm */ + if (!fan->attr[(index - 30) / 5]) + return 0; + } + + return attr->mode; +} + +static const struct attribute_group imanager_group_fan = { + .attrs = imanager_fan_attributes, + .is_visible = imanager_fan_is_visible, +}; + +static int imanager_hwmon_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct imanager_device_data *imgr = dev_get_drvdata(dev->parent); + struct imanager_ec_data *ec = &imgr->ec; + struct imanager_hwmon_device *hwmon = &ec->hwmon; + struct imanager_hwmon_data *data; + struct device *hwmon_dev; + int i, num_attr_groups = 0; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->imgr = imgr; + platform_set_drvdata(pdev, data); + + /* read fan control settings */ + for (i = 0; i < hwmon->fan.num; i++) + imanager_hwmon_read_fan_ctrl(ec, i, &data->fan[i]); + + data->groups[num_attr_groups++] = &imanager_group_in; + + if (hwmon->adc.num > 3) + data->groups[num_attr_groups++] = &imanager_group_other; + + if (hwmon->fan.num) + data->groups[num_attr_groups++] = &imanager_group_fan; + + hwmon_dev = devm_hwmon_device_register_with_groups(dev, + "imanager_hwmon", + data, data->groups); + + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static struct platform_driver imanager_hwmon_driver = { + .driver = { + .name = "imanager-hwmon", + }, + .probe = imanager_hwmon_probe, +}; + +module_platform_driver(imanager_hwmon_driver); + +MODULE_DESCRIPTION("Advantech iManager HWmon Driver"); +MODULE_AUTHOR("Richard Vidal-Dorsch "); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:imanager-hwmon");