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-rw-r--r--drivers/hwmon/Kconfig11
-rw-r--r--drivers/hwmon/Makefile1
-rw-r--r--drivers/hwmon/fam15h_power.c7
-rw-r--r--drivers/hwmon/htu21.c174
-rw-r--r--drivers/hwmon/ibmaem.c12
-rw-r--r--drivers/hwmon/nct6683.c89
-rw-r--r--drivers/hwmon/nct6775.c11
-rw-r--r--drivers/hwmon/pmbus/Kconfig10
-rw-r--r--drivers/hwmon/pmbus/Makefile1
-rw-r--r--drivers/hwmon/pmbus/ltc3815.c215
-rw-r--r--drivers/hwmon/tmp102.c16
11 files changed, 326 insertions, 221 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 8f59f057cdf4..60fb80bd353d 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -859,16 +859,6 @@ config SENSORS_MAX31790
This driver can also be built as a module. If so, the module
will be called max31790.
-config SENSORS_HTU21
- tristate "Measurement Specialties HTU21D humidity/temperature sensors"
- depends on I2C
- help
- If you say yes here you get support for the Measurement Specialties
- HTU21D humidity and temperature sensors.
-
- This driver can also be built as a module. If so, the module
- will be called htu21.
-
config SENSORS_MCP3021
tristate "Microchip MCP3021 and compatibles"
depends on I2C
@@ -1217,6 +1207,7 @@ config SENSORS_PWM_FAN
config SENSORS_SHT15
tristate "Sensiron humidity and temperature sensors. SHT15 and compat."
depends on GPIOLIB || COMPILE_TEST
+ select BITREVERSE
help
If you say yes here you get support for the Sensiron SHT10, SHT11,
SHT15, SHT71, SHT75 humidity and temperature sensors.
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 12a32398fdcc..30c94df31465 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -68,7 +68,6 @@ obj-$(CONFIG_SENSORS_GL518SM) += gl518sm.o
obj-$(CONFIG_SENSORS_GL520SM) += gl520sm.o
obj-$(CONFIG_SENSORS_GPIO_FAN) += gpio-fan.o
obj-$(CONFIG_SENSORS_HIH6130) += hih6130.o
-obj-$(CONFIG_SENSORS_HTU21) += htu21.o
obj-$(CONFIG_SENSORS_ULTRA45) += ultra45_env.o
obj-$(CONFIG_SENSORS_I5500) += i5500_temp.o
obj-$(CONFIG_SENSORS_I5K_AMB) += i5k_amb.o
diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
index 5f7067d7b625..f77eb971ce95 100644
--- a/drivers/hwmon/fam15h_power.c
+++ b/drivers/hwmon/fam15h_power.c
@@ -47,6 +47,8 @@ MODULE_LICENSE("GPL");
#define MSR_F15H_CU_MAX_PWR_ACCUMULATOR 0xc001007b
+#define PCI_DEVICE_ID_AMD_15H_M70H_NB_F4 0x15b4
+
struct fam15h_power_data {
struct pci_dev *pdev;
unsigned int tdp_to_watts;
@@ -124,7 +126,7 @@ static int fam15h_power_init_attrs(struct pci_dev *pdev,
if (c->x86 == 0x15 &&
(c->x86_model <= 0xf ||
- (c->x86_model >= 0x60 && c->x86_model <= 0x6f)))
+ (c->x86_model >= 0x60 && c->x86_model <= 0x7f)))
n += 1;
fam15h_power_attrs = devm_kcalloc(&pdev->dev, n,
@@ -138,7 +140,7 @@ static int fam15h_power_init_attrs(struct pci_dev *pdev,
fam15h_power_attrs[n++] = &dev_attr_power1_crit.attr;
if (c->x86 == 0x15 &&
(c->x86_model <= 0xf ||
- (c->x86_model >= 0x60 && c->x86_model <= 0x6f)))
+ (c->x86_model >= 0x60 && c->x86_model <= 0x7f)))
fam15h_power_attrs[n++] = &dev_attr_power1_input.attr;
data->group.attrs = fam15h_power_attrs;
@@ -296,6 +298,7 @@ static const struct pci_device_id fam15h_power_id_table[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F4) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M60H_NB_F4) },
+ { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_M70H_NB_F4) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) },
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) },
{}
diff --git a/drivers/hwmon/htu21.c b/drivers/hwmon/htu21.c
deleted file mode 100644
index 4c3bbb72f82a..000000000000
--- a/drivers/hwmon/htu21.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/*
- * Measurement Specialties HTU21D humidity and temperature sensor driver
- *
- * Copyright (C) 2013 William Markezana <william.markezana@meas-spec.com>
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/i2c.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/err.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
-#include <linux/jiffies.h>
-
-/* HTU21 Commands */
-#define HTU21_T_MEASUREMENT_HM 0xE3
-#define HTU21_RH_MEASUREMENT_HM 0xE5
-
-struct htu21 {
- struct i2c_client *client;
- struct mutex lock;
- bool valid;
- unsigned long last_update;
- int temperature;
- int humidity;
-};
-
-static inline int htu21_temp_ticks_to_millicelsius(int ticks)
-{
- ticks &= ~0x0003; /* clear status bits */
- /*
- * Formula T = -46.85 + 175.72 * ST / 2^16 from datasheet p14,
- * optimized for integer fixed point (3 digits) arithmetic
- */
- return ((21965 * ticks) >> 13) - 46850;
-}
-
-static inline int htu21_rh_ticks_to_per_cent_mille(int ticks)
-{
- ticks &= ~0x0003; /* clear status bits */
- /*
- * Formula RH = -6 + 125 * SRH / 2^16 from datasheet p14,
- * optimized for integer fixed point (3 digits) arithmetic
- */
- return ((15625 * ticks) >> 13) - 6000;
-}
-
-static int htu21_update_measurements(struct device *dev)
-{
- struct htu21 *htu21 = dev_get_drvdata(dev);
- struct i2c_client *client = htu21->client;
- int ret = 0;
-
- mutex_lock(&htu21->lock);
-
- if (time_after(jiffies, htu21->last_update + HZ / 2) ||
- !htu21->valid) {
- ret = i2c_smbus_read_word_swapped(client,
- HTU21_T_MEASUREMENT_HM);
- if (ret < 0)
- goto out;
- htu21->temperature = htu21_temp_ticks_to_millicelsius(ret);
- ret = i2c_smbus_read_word_swapped(client,
- HTU21_RH_MEASUREMENT_HM);
- if (ret < 0)
- goto out;
- htu21->humidity = htu21_rh_ticks_to_per_cent_mille(ret);
- htu21->last_update = jiffies;
- htu21->valid = true;
- }
-out:
- mutex_unlock(&htu21->lock);
-
- return ret >= 0 ? 0 : ret;
-}
-
-static ssize_t htu21_show_temperature(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct htu21 *htu21 = dev_get_drvdata(dev);
- int ret;
-
- ret = htu21_update_measurements(dev);
- if (ret < 0)
- return ret;
- return sprintf(buf, "%d\n", htu21->temperature);
-}
-
-static ssize_t htu21_show_humidity(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct htu21 *htu21 = dev_get_drvdata(dev);
- int ret;
-
- ret = htu21_update_measurements(dev);
- if (ret < 0)
- return ret;
- return sprintf(buf, "%d\n", htu21->humidity);
-}
-
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
- htu21_show_temperature, NULL, 0);
-static SENSOR_DEVICE_ATTR(humidity1_input, S_IRUGO,
- htu21_show_humidity, NULL, 0);
-
-static struct attribute *htu21_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_humidity1_input.dev_attr.attr,
- NULL
-};
-
-ATTRIBUTE_GROUPS(htu21);
-
-static int htu21_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct device *dev = &client->dev;
- struct htu21 *htu21;
- struct device *hwmon_dev;
-
- if (!i2c_check_functionality(client->adapter,
- I2C_FUNC_SMBUS_READ_WORD_DATA)) {
- dev_err(&client->dev,
- "adapter does not support SMBus word transactions\n");
- return -ENODEV;
- }
-
- htu21 = devm_kzalloc(dev, sizeof(*htu21), GFP_KERNEL);
- if (!htu21)
- return -ENOMEM;
-
- htu21->client = client;
- mutex_init(&htu21->lock);
-
- hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
- htu21,
- htu21_groups);
- return PTR_ERR_OR_ZERO(hwmon_dev);
-}
-
-static const struct i2c_device_id htu21_id[] = {
- { "htu21", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, htu21_id);
-
-static struct i2c_driver htu21_driver = {
- .class = I2C_CLASS_HWMON,
- .driver = {
- .name = "htu21",
- },
- .probe = htu21_probe,
- .id_table = htu21_id,
-};
-
-module_i2c_driver(htu21_driver);
-
-MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
-MODULE_DESCRIPTION("MEAS HTU21D humidity and temperature sensor driver");
-MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c
index 7a8a6fbf11ff..1f643782ce04 100644
--- a/drivers/hwmon/ibmaem.c
+++ b/drivers/hwmon/ibmaem.c
@@ -920,8 +920,8 @@ static ssize_t aem_set_power_period(struct device *dev,
/* Discover sensors on an AEM device */
static int aem_register_sensors(struct aem_data *data,
- struct aem_ro_sensor_template *ro,
- struct aem_rw_sensor_template *rw)
+ const struct aem_ro_sensor_template *ro,
+ const struct aem_rw_sensor_template *rw)
{
struct device *dev = &data->pdev->dev;
struct sensor_device_attribute *sensors = data->sensors;
@@ -1020,19 +1020,19 @@ static void aem_remove_sensors(struct aem_data *data)
/* Sensor probe functions */
/* Description of AEM1 sensors */
-static struct aem_ro_sensor_template aem1_ro_sensors[] = {
+static const struct aem_ro_sensor_template aem1_ro_sensors[] = {
{"energy1_input", aem_show_energy, 0},
{"power1_average", aem_show_power, 0},
{NULL, NULL, 0},
};
-static struct aem_rw_sensor_template aem1_rw_sensors[] = {
+static const struct aem_rw_sensor_template aem1_rw_sensors[] = {
{"power1_average_interval", aem_show_power_period, aem_set_power_period, 0},
{NULL, NULL, NULL, 0},
};
/* Description of AEM2 sensors */
-static struct aem_ro_sensor_template aem2_ro_sensors[] = {
+static const struct aem_ro_sensor_template aem2_ro_sensors[] = {
{"energy1_input", aem_show_energy, 0},
{"energy2_input", aem_show_energy, 1},
{"power1_average", aem_show_power, 0},
@@ -1050,7 +1050,7 @@ static struct aem_ro_sensor_template aem2_ro_sensors[] = {
{NULL, NULL, 0},
};
-static struct aem_rw_sensor_template aem2_rw_sensors[] = {
+static const struct aem_rw_sensor_template aem2_rw_sensors[] = {
{"power1_average_interval", aem_show_power_period, aem_set_power_period, 0},
{"power2_average_interval", aem_show_power_period, aem_set_power_period, 1},
{NULL, NULL, NULL, 0},
diff --git a/drivers/hwmon/nct6683.c b/drivers/hwmon/nct6683.c
index 37f01702d081..559c596b24f9 100644
--- a/drivers/hwmon/nct6683.c
+++ b/drivers/hwmon/nct6683.c
@@ -29,7 +29,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/acpi.h>
-#include <linux/dmi.h>
+#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
@@ -45,7 +45,7 @@ enum kinds { nct6683 };
static bool force;
module_param(force, bool, 0);
-MODULE_PARM_DESC(force, "Set to one to enable detection on non-Intel boards");
+MODULE_PARM_DESC(force, "Set to one to enable support for unknown vendors");
static const char * const nct6683_device_names[] = {
"nct6683",
@@ -141,6 +141,7 @@ superio_exit(int ioreg)
#define NCT6683_REG_MON(x) (0x100 + (x) * 2)
#define NCT6683_REG_FAN_RPM(x) (0x140 + (x) * 2)
#define NCT6683_REG_PWM(x) (0x160 + (x))
+#define NCT6683_REG_PWM_WRITE(x) (0xa28 + (x))
#define NCT6683_REG_MON_STS(x) (0x174 + (x))
#define NCT6683_REG_IDLE(x) (0x178 + (x))
@@ -165,8 +166,13 @@ superio_exit(int ioreg)
#define NCT6683_REG_FAN_MIN(x) (0x3b8 + (x) * 2) /* 16 bit */
+#define NCT6683_REG_FAN_CFG_CTRL 0xa01
+#define NCT6683_FAN_CFG_REQ 0x80
+#define NCT6683_FAN_CFG_DONE 0x40
+
#define NCT6683_REG_CUSTOMER_ID 0x602
#define NCT6683_CUSTOMER_ID_INTEL 0x805
+#define NCT6683_CUSTOMER_ID_MITAC 0xa0e
#define NCT6683_REG_BUILD_YEAR 0x604
#define NCT6683_REG_BUILD_MONTH 0x605
@@ -394,7 +400,8 @@ struct sensor_template_group {
};
static struct attribute_group *
-nct6683_create_attr_group(struct device *dev, struct sensor_template_group *tg,
+nct6683_create_attr_group(struct device *dev,
+ const struct sensor_template_group *tg,
int repeat)
{
struct sensor_device_attribute_2 *a2;
@@ -559,6 +566,7 @@ static int get_temp_reg(struct nct6683_data *data, int nr, int index)
break;
}
break;
+ case NCT6683_CUSTOMER_ID_MITAC:
default:
switch (nr) {
default:
@@ -703,7 +711,7 @@ static struct sensor_device_template *nct6683_attributes_in_template[] = {
NULL
};
-static struct sensor_template_group nct6683_in_template_group = {
+static const struct sensor_template_group nct6683_in_template_group = {
.templates = nct6683_attributes_in_template,
.is_visible = nct6683_in_is_visible,
};
@@ -774,7 +782,7 @@ static struct sensor_device_template *nct6683_attributes_fan_template[] = {
NULL
};
-static struct sensor_template_group nct6683_fan_template_group = {
+static const struct sensor_template_group nct6683_fan_template_group = {
.templates = nct6683_attributes_fan_template,
.is_visible = nct6683_fan_is_visible,
.base = 1,
@@ -902,7 +910,7 @@ static struct sensor_device_template *nct6683_attributes_temp_template[] = {
NULL
};
-static struct sensor_template_group nct6683_temp_template_group = {
+static const struct sensor_template_group nct6683_temp_template_group = {
.templates = nct6683_attributes_temp_template,
.is_visible = nct6683_temp_is_visible,
.base = 1,
@@ -918,7 +926,29 @@ show_pwm(struct device *dev, struct device_attribute *attr, char *buf)
return sprintf(buf, "%d\n", data->pwm[index]);
}
-SENSOR_TEMPLATE(pwm, "pwm%d", S_IRUGO, show_pwm, NULL, 0);
+static ssize_t
+store_pwm(struct device *dev, struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+ struct nct6683_data *data = dev_get_drvdata(dev);
+ int index = sattr->index;
+ unsigned long val;
+
+ if (kstrtoul(buf, 10, &val) || val > 255)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ nct6683_write(data, NCT6683_REG_FAN_CFG_CTRL, NCT6683_FAN_CFG_REQ);
+ usleep_range(1000, 2000);
+ nct6683_write(data, NCT6683_REG_PWM_WRITE(index), val);
+ nct6683_write(data, NCT6683_REG_FAN_CFG_CTRL, NCT6683_FAN_CFG_DONE);
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+SENSOR_TEMPLATE(pwm, "pwm%d", S_IRUGO, show_pwm, store_pwm, 0);
static umode_t nct6683_pwm_is_visible(struct kobject *kobj,
struct attribute *attr, int index)
@@ -930,6 +960,10 @@ static umode_t nct6683_pwm_is_visible(struct kobject *kobj,
if (!(data->have_pwm & (1 << pwm)))
return 0;
+ /* Only update pwm values for Mitac boards */
+ if (data->customer_id == NCT6683_CUSTOMER_ID_MITAC)
+ return attr->mode | S_IWUSR;
+
return attr->mode;
}
@@ -938,7 +972,7 @@ static struct sensor_device_template *nct6683_attributes_pwm_template[] = {
NULL
};
-static struct sensor_template_group nct6683_pwm_template_group = {
+static const struct sensor_template_group nct6683_pwm_template_group = {
.templates = nct6683_attributes_pwm_template,
.is_visible = nct6683_pwm_is_visible,
.base = 1,
@@ -1170,6 +1204,7 @@ static int nct6683_probe(struct platform_device *pdev)
struct device *hwmon_dev;
struct resource *res;
int groups = 0;
+ char build[16];
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(dev, res->start, IOREGION_LENGTH, DRVNAME))
@@ -1187,6 +1222,17 @@ static int nct6683_probe(struct platform_device *pdev)
data->customer_id = nct6683_read16(data, NCT6683_REG_CUSTOMER_ID);
+ /* By default only instantiate driver if the customer ID is known */
+ switch (data->customer_id) {
+ case NCT6683_CUSTOMER_ID_INTEL:
+ break;
+ case NCT6683_CUSTOMER_ID_MITAC:
+ break;
+ default:
+ if (!force)
+ return -ENODEV;
+ }
+
nct6683_init_device(data);
nct6683_setup_fans(data);
nct6683_setup_sensors(data);
@@ -1230,13 +1276,22 @@ static int nct6683_probe(struct platform_device *pdev)
}
data->groups[groups++] = &nct6683_group_other;
- dev_info(dev, "%s EC firmware version %d.%d build %02x/%02x/%02x\n",
+ if (data->customer_id == NCT6683_CUSTOMER_ID_INTEL)
+ scnprintf(build, sizeof(build), "%02x/%02x/%02x",
+ nct6683_read(data, NCT6683_REG_BUILD_MONTH),
+ nct6683_read(data, NCT6683_REG_BUILD_DAY),
+ nct6683_read(data, NCT6683_REG_BUILD_YEAR));
+ else
+ scnprintf(build, sizeof(build), "%02d/%02d/%02d",
+ nct6683_read(data, NCT6683_REG_BUILD_MONTH),
+ nct6683_read(data, NCT6683_REG_BUILD_DAY),
+ nct6683_read(data, NCT6683_REG_BUILD_YEAR));
+
+ dev_info(dev, "%s EC firmware version %d.%d build %s\n",
nct6683_chip_names[data->kind],
nct6683_read(data, NCT6683_REG_VERSION_HI),
nct6683_read(data, NCT6683_REG_VERSION_LO),
- nct6683_read(data, NCT6683_REG_BUILD_MONTH),
- nct6683_read(data, NCT6683_REG_BUILD_DAY),
- nct6683_read(data, NCT6683_REG_BUILD_YEAR));
+ build);
hwmon_dev = devm_hwmon_device_register_with_groups(dev,
nct6683_device_names[data->kind], data, data->groups);
@@ -1292,20 +1347,10 @@ static struct platform_driver nct6683_driver = {
static int __init nct6683_find(int sioaddr, struct nct6683_sio_data *sio_data)
{
- const char *board_vendor;
int addr;
u16 val;
int err;
- /*
- * Only run on Intel boards unless the 'force' module parameter is set
- */
- if (!force) {
- board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR);
- if (!board_vendor || strcmp(board_vendor, "Intel Corporation"))
- return -ENODEV;
- }
-
err = superio_enter(sioaddr);
if (err)
return err;
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index d7ebdf8651f5..d087a8e00cf5 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -1045,7 +1045,8 @@ struct sensor_template_group {
};
static struct attribute_group *
-nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
+nct6775_create_attr_group(struct device *dev,
+ const struct sensor_template_group *tg,
int repeat)
{
struct attribute_group *group;
@@ -1827,7 +1828,7 @@ static struct sensor_device_template *nct6775_attributes_in_template[] = {
NULL
};
-static struct sensor_template_group nct6775_in_template_group = {
+static const struct sensor_template_group nct6775_in_template_group = {
.templates = nct6775_attributes_in_template,
.is_visible = nct6775_in_is_visible,
};
@@ -2046,7 +2047,7 @@ static struct sensor_device_template *nct6775_attributes_fan_template[] = {
NULL
};
-static struct sensor_template_group nct6775_fan_template_group = {
+static const struct sensor_template_group nct6775_fan_template_group = {
.templates = nct6775_attributes_fan_template,
.is_visible = nct6775_fan_is_visible,
.base = 1,
@@ -2255,7 +2256,7 @@ static struct sensor_device_template *nct6775_attributes_temp_template[] = {
NULL
};
-static struct sensor_template_group nct6775_temp_template_group = {
+static const struct sensor_template_group nct6775_temp_template_group = {
.templates = nct6775_attributes_temp_template,
.is_visible = nct6775_temp_is_visible,
.base = 1,
@@ -3117,7 +3118,7 @@ static struct sensor_device_template *nct6775_attributes_pwm_template[] = {
NULL
};
-static struct sensor_template_group nct6775_pwm_template_group = {
+static const struct sensor_template_group nct6775_pwm_template_group = {
.templates = nct6775_attributes_pwm_template,
.is_visible = nct6775_pwm_is_visible,
.base = 1,
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index df6ebb2b8f0f..7e5cc3d025ef 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -65,6 +65,16 @@ config SENSORS_LTC2978_REGULATOR
If you say yes here you get regulator support for Linear
Technology LTC2974, LTC2977, LTC2978, LTC3880, LTC3883, and LTM4676.
+config SENSORS_LTC3815
+ tristate "Linear Technologies LTC3815"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Linear
+ Technology LTC3815.
+
+ This driver can also be built as a module. If so, the module will
+ be called ltc3815.
+
config SENSORS_MAX16064
tristate "Maxim MAX16064"
default n
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index bce046d37f02..562132054aaf 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -7,6 +7,7 @@ obj-$(CONFIG_SENSORS_PMBUS) += pmbus.o
obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
+obj-$(CONFIG_SENSORS_LTC3815) += ltc3815.o
obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
obj-$(CONFIG_SENSORS_MAX20751) += max20751.o
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
diff --git a/drivers/hwmon/pmbus/ltc3815.c b/drivers/hwmon/pmbus/ltc3815.c
new file mode 100644
index 000000000000..bb32e6276622
--- /dev/null
+++ b/drivers/hwmon/pmbus/ltc3815.c
@@ -0,0 +1,215 @@
+/*
+ * Hardware monitoring driver for LTC3815
+ *
+ * Copyright (c) 2015 Linear Technology
+ * Copyright (c) 2015 Guenter Roeck
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include "pmbus.h"
+
+#define LTC3815_MFR_IOUT_PEAK 0xd7
+#define LTC3815_MFR_VOUT_PEAK 0xdd
+#define LTC3815_MFR_VIN_PEAK 0xde
+#define LTC3815_MFR_TEMP_PEAK 0xdf
+#define LTC3815_MFR_IIN_PEAK 0xe1
+#define LTC3815_MFR_SPECIAL_ID 0xe7
+
+#define LTC3815_ID 0x8000
+#define LTC3815_ID_MASK 0xff00
+
+static int ltc3815_read_byte_data(struct i2c_client *client, int page, int reg)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_VOUT_MODE:
+ /*
+ * The chip returns 0x3e, suggesting VID mode with manufacturer
+ * specific VID codes. Since the output voltage is reported
+ * with a LSB of 0.5mV, override and report direct mode with
+ * appropriate coefficients.
+ */
+ ret = 0x40;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static int ltc3815_write_byte(struct i2c_client *client, int page, u8 reg)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_CLEAR_FAULTS:
+ /*
+ * LTC3815 does not support the CLEAR_FAULTS command.
+ * Emulate it by clearing the status register.
+ */
+ ret = pmbus_read_word_data(client, 0, PMBUS_STATUS_WORD);
+ if (ret > 0) {
+ pmbus_write_word_data(client, 0, PMBUS_STATUS_WORD,
+ ret);
+ ret = 0;
+ }
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static int ltc3815_read_word_data(struct i2c_client *client, int page, int reg)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_VIRT_READ_VIN_MAX:
+ ret = pmbus_read_word_data(client, page, LTC3815_MFR_VIN_PEAK);
+ break;
+ case PMBUS_VIRT_READ_VOUT_MAX:
+ ret = pmbus_read_word_data(client, page, LTC3815_MFR_VOUT_PEAK);
+ break;
+ case PMBUS_VIRT_READ_TEMP_MAX:
+ ret = pmbus_read_word_data(client, page, LTC3815_MFR_TEMP_PEAK);
+ break;
+ case PMBUS_VIRT_READ_IOUT_MAX:
+ ret = pmbus_read_word_data(client, page, LTC3815_MFR_IOUT_PEAK);
+ break;
+ case PMBUS_VIRT_READ_IIN_MAX:
+ ret = pmbus_read_word_data(client, page, LTC3815_MFR_IIN_PEAK);
+ break;
+ case PMBUS_VIRT_RESET_VOUT_HISTORY:
+ case PMBUS_VIRT_RESET_VIN_HISTORY:
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ case PMBUS_VIRT_RESET_IOUT_HISTORY:
+ case PMBUS_VIRT_RESET_IIN_HISTORY:
+ ret = 0;
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static int ltc3815_write_word_data(struct i2c_client *client, int page,
+ int reg, u16 word)
+{
+ int ret;
+
+ switch (reg) {
+ case PMBUS_VIRT_RESET_IIN_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ LTC3815_MFR_IIN_PEAK, 0);
+ break;
+ case PMBUS_VIRT_RESET_IOUT_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ LTC3815_MFR_IOUT_PEAK, 0);
+ break;
+ case PMBUS_VIRT_RESET_VOUT_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ LTC3815_MFR_VOUT_PEAK, 0);
+ break;
+ case PMBUS_VIRT_RESET_VIN_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ LTC3815_MFR_VIN_PEAK, 0);
+ break;
+ case PMBUS_VIRT_RESET_TEMP_HISTORY:
+ ret = pmbus_write_word_data(client, page,
+ LTC3815_MFR_TEMP_PEAK, 0);
+ break;
+ default:
+ ret = -ENODATA;
+ break;
+ }
+ return ret;
+}
+
+static const struct i2c_device_id ltc3815_id[] = {
+ {"ltc3815", 0},
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ltc3815_id);
+
+static struct pmbus_driver_info ltc3815_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .format[PSC_CURRENT_IN] = direct,
+ .format[PSC_CURRENT_OUT] = direct,
+ .format[PSC_TEMPERATURE] = direct,
+ .m[PSC_VOLTAGE_IN] = 250,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = 0,
+ .m[PSC_VOLTAGE_OUT] = 2,
+ .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] = 2,
+ .m[PSC_TEMPERATURE] = 1,
+ .b[PSC_TEMPERATURE] = 0,
+ .R[PSC_TEMPERATURE] = 0,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_TEMP,
+ .read_byte_data = ltc3815_read_byte_data,
+ .read_word_data = ltc3815_read_word_data,
+ .write_byte = ltc3815_write_byte,
+ .write_word_data = ltc3815_write_word_data,
+};
+
+static int ltc3815_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int chip_id;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_READ_WORD_DATA))
+ return -ENODEV;
+
+ chip_id = i2c_smbus_read_word_data(client, LTC3815_MFR_SPECIAL_ID);
+ if (chip_id < 0)
+ return chip_id;
+ if ((chip_id & LTC3815_ID_MASK) != LTC3815_ID)
+ return -ENODEV;
+
+ return pmbus_do_probe(client, id, &ltc3815_info);
+}
+
+static struct i2c_driver ltc3815_driver = {
+ .driver = {
+ .name = "ltc3815",
+ },
+ .probe = ltc3815_probe,
+ .remove = pmbus_do_remove,
+ .id_table = ltc3815_id,
+};
+
+module_i2c_driver(ltc3815_driver);
+
+MODULE_AUTHOR("Guenter Roeck");
+MODULE_DESCRIPTION("PMBus driver for LTC3815");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c
index 65482624ea2c..5289aa0980a8 100644
--- a/drivers/hwmon/tmp102.c
+++ b/drivers/hwmon/tmp102.c
@@ -58,6 +58,7 @@ struct tmp102 {
u16 config_orig;
unsigned long last_update;
int temp[3];
+ bool first_time;
};
/* convert left adjusted 13-bit TMP102 register value to milliCelsius */
@@ -93,6 +94,7 @@ static struct tmp102 *tmp102_update_device(struct device *dev)
tmp102->temp[i] = tmp102_reg_to_mC(status);
}
tmp102->last_update = jiffies;
+ tmp102->first_time = false;
}
mutex_unlock(&tmp102->lock);
return tmp102;
@@ -102,6 +104,12 @@ static int tmp102_read_temp(void *dev, int *temp)
{
struct tmp102 *tmp102 = tmp102_update_device(dev);
+ /* Is it too early even to return a conversion? */
+ if (tmp102->first_time) {
+ dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__);
+ return -EAGAIN;
+ }
+
*temp = tmp102->temp[0];
return 0;
@@ -114,6 +122,10 @@ static ssize_t tmp102_show_temp(struct device *dev,
struct sensor_device_attribute *sda = to_sensor_dev_attr(attr);
struct tmp102 *tmp102 = tmp102_update_device(dev);
+ /* Is it too early even to return a read? */
+ if (tmp102->first_time)
+ return -EAGAIN;
+
return sprintf(buf, "%d\n", tmp102->temp[sda->index]);
}
@@ -207,7 +219,9 @@ static int tmp102_probe(struct i2c_client *client,
status = -ENODEV;
goto fail_restore_config;
}
- tmp102->last_update = jiffies - HZ;
+ tmp102->last_update = jiffies;
+ /* Mark that we are not ready with data until conversion is complete */
+ tmp102->first_time = true;
mutex_init(&tmp102->lock);
hwmon_dev = hwmon_device_register_with_groups(dev, client->name,
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 18:51:13 +0300