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-rw-r--r--drivers/hwmon/Kconfig26
-rw-r--r--drivers/hwmon/Makefile2
-rw-r--r--drivers/hwmon/adm1025.c2
-rw-r--r--drivers/hwmon/adm1026.c26
-rw-r--r--drivers/hwmon/adm9240.c9
-rw-r--r--drivers/hwmon/adt7411.c301
-rw-r--r--drivers/hwmon/adt7462.c12
-rw-r--r--drivers/hwmon/adt7470.c6
-rw-r--r--drivers/hwmon/amc6821.c4
-rw-r--r--drivers/hwmon/coretemp.c321
-rw-r--r--drivers/hwmon/ds620.c2
-rw-r--r--drivers/hwmon/emc2103.c4
-rw-r--r--drivers/hwmon/emc6w201.c8
-rw-r--r--drivers/hwmon/g762.c11
-rw-r--r--drivers/hwmon/hwmon.c79
-rw-r--r--drivers/hwmon/lm85.c3
-rw-r--r--drivers/hwmon/lm87.c136
-rw-r--r--drivers/hwmon/mcp3021.c50
-rw-r--r--drivers/hwmon/nct7802.c8
-rw-r--r--drivers/hwmon/pmbus/adm1275.c20
-rw-r--r--drivers/hwmon/scpi-hwmon.c1
-rw-r--r--drivers/hwmon/smsc47m192.c5
-rw-r--r--drivers/hwmon/tc654.c514
-rw-r--r--drivers/hwmon/tmp108.c469
-rw-r--r--drivers/hwmon/via-cputemp.c77
25 files changed, 1542 insertions, 554 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 45cef3d2c75c..190d270b20a2 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -907,6 +907,17 @@ config SENSORS_MCP3021
This driver can also be built as a module. If so, the module
will be called mcp3021.
+config SENSORS_TC654
+ tristate "Microchip TC654/TC655 and compatibles"
+ depends on I2C
+ help
+ If you say yes here you get support for TC654 and TC655.
+ The TC654 and TC655 are PWM mode fan speed controllers with
+ FanSense technology for use with brushless DC fans.
+
+ This driver can also be built as a module. If so, the module
+ will be called tc654.
+
config SENSORS_MENF21BMC_HWMON
tristate "MEN 14F021P00 BMC Hardware Monitoring"
depends on MFD_MENF21BMC
@@ -1068,8 +1079,8 @@ config SENSORS_LM90
LM86, LM89 and LM99, Analog Devices ADM1032, ADT7461, and ADT7461A,
Maxim MAX6646, MAX6647, MAX6648, MAX6649, MAX6657, MAX6658, MAX6659,
MAX6680, MAX6681, MAX6692, MAX6695, MAX6696, ON Semiconductor NCT1008,
- Winbond/Nuvoton W83L771W/G/AWG/ASG, Philips SA56004, and GMT G781
- sensor chips.
+ Winbond/Nuvoton W83L771W/G/AWG/ASG, Philips SA56004, GMT G781, and
+ Texas Instruments TMP451 sensor chips.
This driver can also be built as a module. If so, the module
will be called lm90.
@@ -1591,6 +1602,17 @@ config SENSORS_TMP103
This driver can also be built as a module. If so, the module
will be called tmp103.
+config SENSORS_TMP108
+ tristate "Texas Instruments TMP108"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for Texas Instruments TMP108
+ sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called tmp108.
+
config SENSORS_TMP401
tristate "Texas Instruments TMP401 and compatibles"
depends on I2C
diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index aecf4ba17460..d2cb7e804a0f 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -122,6 +122,7 @@ obj-$(CONFIG_SENSORS_MAX6697) += max6697.o
obj-$(CONFIG_SENSORS_MAX31790) += max31790.o
obj-$(CONFIG_SENSORS_MC13783_ADC)+= mc13783-adc.o
obj-$(CONFIG_SENSORS_MCP3021) += mcp3021.o
+obj-$(CONFIG_SENSORS_TC654) += tc654.o
obj-$(CONFIG_SENSORS_MENF21BMC_HWMON) += menf21bmc_hwmon.o
obj-$(CONFIG_SENSORS_NCT6683) += nct6683.o
obj-$(CONFIG_SENSORS_NCT6775) += nct6775.o
@@ -152,6 +153,7 @@ obj-$(CONFIG_SENSORS_TC74) += tc74.o
obj-$(CONFIG_SENSORS_THMC50) += thmc50.o
obj-$(CONFIG_SENSORS_TMP102) += tmp102.o
obj-$(CONFIG_SENSORS_TMP103) += tmp103.o
+obj-$(CONFIG_SENSORS_TMP108) += tmp108.o
obj-$(CONFIG_SENSORS_TMP401) += tmp401.o
obj-$(CONFIG_SENSORS_TMP421) += tmp421.o
obj-$(CONFIG_SENSORS_TWL4030_MADC)+= twl4030-madc-hwmon.o
diff --git a/drivers/hwmon/adm1025.c b/drivers/hwmon/adm1025.c
index d6c767ace916..1abb4609b412 100644
--- a/drivers/hwmon/adm1025.c
+++ b/drivers/hwmon/adm1025.c
@@ -93,7 +93,7 @@ static const int in_scale[6] = { 2500, 2250, 3300, 5000, 12000, 3300 };
#define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192)
#define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \
- (val) * 192 >= (scale) * 255 ? 255 : \
+ (val) >= (scale) * 255 / 192 ? 255 : \
((val) * 192 + (scale) / 2) / (scale))
#define TEMP_FROM_REG(reg) ((reg) * 1000)
diff --git a/drivers/hwmon/adm1026.c b/drivers/hwmon/adm1026.c
index e67b9a50ac7c..b2a5d9e5c590 100644
--- a/drivers/hwmon/adm1026.c
+++ b/drivers/hwmon/adm1026.c
@@ -197,8 +197,9 @@ static int adm1026_scaling[] = { /* .001 Volts */
};
#define NEG12_OFFSET 16000
#define SCALE(val, from, to) (((val)*(to) + ((from)/2))/(from))
-#define INS_TO_REG(n, val) (clamp_val(SCALE(val, adm1026_scaling[n], 192),\
- 0, 255))
+#define INS_TO_REG(n, val) \
+ SCALE(clamp_val(val, 0, 255 * adm1026_scaling[n] / 192), \
+ adm1026_scaling[n], 192)
#define INS_FROM_REG(n, val) (SCALE(val, 192, adm1026_scaling[n]))
/*
@@ -215,11 +216,11 @@ static int adm1026_scaling[] = { /* .001 Volts */
#define DIV_TO_REG(val) ((val) >= 8 ? 3 : (val) >= 4 ? 2 : (val) >= 2 ? 1 : 0)
/* Temperature is reported in 1 degC increments */
-#define TEMP_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
- / 1000, -127, 127))
+#define TEMP_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
+ 1000)
#define TEMP_FROM_REG(val) ((val) * 1000)
-#define OFFSET_TO_REG(val) (clamp_val(((val) + ((val) < 0 ? -500 : 500)) \
- / 1000, -127, 127))
+#define OFFSET_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), \
+ 1000)
#define OFFSET_FROM_REG(val) ((val) * 1000)
#define PWM_TO_REG(val) (clamp_val(val, 0, 255))
@@ -233,7 +234,8 @@ static int adm1026_scaling[] = { /* .001 Volts */
* indicates that the DAC could be used to drive the fans, but in our
* example board (Arima HDAMA) it isn't connected to the fans at all.
*/
-#define DAC_TO_REG(val) (clamp_val(((((val) * 255) + 500) / 2500), 0, 255))
+#define DAC_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val(val, 0, 2500) * 255, \
+ 2500)
#define DAC_FROM_REG(val) (((val) * 2500) / 255)
/*
@@ -593,7 +595,10 @@ static ssize_t set_in16_min(struct device *dev, struct device_attribute *attr,
return err;
mutex_lock(&data->update_lock);
- data->in_min[16] = INS_TO_REG(16, val + NEG12_OFFSET);
+ data->in_min[16] = INS_TO_REG(16,
+ clamp_val(val, INT_MIN,
+ INT_MAX - NEG12_OFFSET) +
+ NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MIN[16], data->in_min[16]);
mutex_unlock(&data->update_lock);
return count;
@@ -618,7 +623,10 @@ static ssize_t set_in16_max(struct device *dev, struct device_attribute *attr,
return err;
mutex_lock(&data->update_lock);
- data->in_max[16] = INS_TO_REG(16, val+NEG12_OFFSET);
+ data->in_max[16] = INS_TO_REG(16,
+ clamp_val(val, INT_MIN,
+ INT_MAX - NEG12_OFFSET) +
+ NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MAX[16], data->in_max[16]);
mutex_unlock(&data->update_lock);
return count;
diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index 2fe1828bd10b..72bf2489511e 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -98,13 +98,15 @@ static inline unsigned int IN_FROM_REG(u8 reg, int n)
static inline u8 IN_TO_REG(unsigned long val, int n)
{
- return clamp_val(SCALE(val, 192, nom_mv[n]), 0, 255);
+ val = clamp_val(val, 0, nom_mv[n] * 255 / 192);
+ return SCALE(val, 192, nom_mv[n]);
}
/* temperature range: -40..125, 127 disables temperature alarm */
static inline s8 TEMP_TO_REG(long val)
{
- return clamp_val(SCALE(val, 1, 1000), -40, 127);
+ val = clamp_val(val, -40000, 127000);
+ return SCALE(val, 1, 1000);
}
/* two fans, each with low fan speed limit */
@@ -122,7 +124,8 @@ static inline unsigned int FAN_FROM_REG(u8 reg, u8 div)
/* analog out 0..1250mV */
static inline u8 AOUT_TO_REG(unsigned long val)
{
- return clamp_val(SCALE(val, 255, 1250), 0, 255);
+ val = clamp_val(val, 0, 1250);
+ return SCALE(val, 255, 1250);
}
static inline unsigned int AOUT_FROM_REG(u8 reg)
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c
index 812fbc00f693..bdeaece9641d 100644
--- a/drivers/hwmon/adt7411.c
+++ b/drivers/hwmon/adt7411.c
@@ -55,7 +55,7 @@ struct adt7411_data {
struct mutex device_lock; /* for "atomic" device accesses */
struct mutex update_lock;
unsigned long next_update;
- int vref_cached;
+ long vref_cached;
struct i2c_client *client;
bool use_ext_temp;
};
@@ -114,85 +114,6 @@ static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit,
return ret;
}
-static ssize_t adt7411_show_vdd(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
- ADT7411_REG_VDD_MSB, 2);
-
- return ret < 0 ? ret : sprintf(buf, "%u\n", ret * 7000 / 1024);
-}
-
-static ssize_t adt7411_show_temp(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int nr = to_sensor_dev_attr(attr)->index;
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int val;
- struct {
- u8 low;
- u8 high;
- } reg[2] = {
- { ADT7411_REG_INT_TEMP_VDD_LSB, ADT7411_REG_INT_TEMP_MSB },
- { ADT7411_REG_EXT_TEMP_AIN14_LSB,
- ADT7411_REG_EXT_TEMP_AIN1_MSB },
- };
-
- val = adt7411_read_10_bit(client, reg[nr].low, reg[nr].high, 0);
- if (val < 0)
- return val;
-
- val = val & 0x200 ? val - 0x400 : val; /* 10 bit signed */
-
- return sprintf(buf, "%d\n", val * 250);
-}
-
-static ssize_t adt7411_show_input(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int nr = to_sensor_dev_attr(attr)->index;
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int val;
- u8 lsb_reg, lsb_shift;
-
- mutex_lock(&data->update_lock);
- if (time_after_eq(jiffies, data->next_update)) {
- val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
- if (val < 0)
- goto exit_unlock;
-
- if (val & ADT7411_CFG3_REF_VDD) {
- val = adt7411_read_10_bit(client,
- ADT7411_REG_INT_TEMP_VDD_LSB,
- ADT7411_REG_VDD_MSB, 2);
- if (val < 0)
- goto exit_unlock;
-
- data->vref_cached = val * 7000 / 1024;
- } else {
- data->vref_cached = 2250;
- }
-
- data->next_update = jiffies + HZ;
- }
-
- lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);
- lsb_shift = 2 * (nr & 0x03);
- val = adt7411_read_10_bit(client, lsb_reg,
- ADT7411_REG_EXT_TEMP_AIN1_MSB + nr, lsb_shift);
- if (val < 0)
- goto exit_unlock;
-
- val = sprintf(buf, "%u\n", val * data->vref_cached / 1024);
- exit_unlock:
- mutex_unlock(&data->update_lock);
- return val;
-}
-
static ssize_t adt7411_show_bit(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -228,65 +149,157 @@ static ssize_t adt7411_set_bit(struct device *dev,
return ret < 0 ? ret : count;
}
-
#define ADT7411_BIT_ATTR(__name, __reg, __bit) \
SENSOR_DEVICE_ATTR_2(__name, S_IRUGO | S_IWUSR, adt7411_show_bit, \
adt7411_set_bit, __bit, __reg)
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, adt7411_show_temp, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, adt7411_show_temp, NULL, 1);
-static DEVICE_ATTR(in0_input, S_IRUGO, adt7411_show_vdd, NULL);
-static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, adt7411_show_input, NULL, 0);
-static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, adt7411_show_input, NULL, 1);
-static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, adt7411_show_input, NULL, 2);
-static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, adt7411_show_input, NULL, 3);
-static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, adt7411_show_input, NULL, 4);
-static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, adt7411_show_input, NULL, 5);
-static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, adt7411_show_input, NULL, 6);
-static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, adt7411_show_input, NULL, 7);
static ADT7411_BIT_ATTR(no_average, ADT7411_REG_CFG2, ADT7411_CFG2_DISABLE_AVG);
static ADT7411_BIT_ATTR(fast_sampling, ADT7411_REG_CFG3, ADT7411_CFG3_ADC_CLK_225);
static ADT7411_BIT_ATTR(adc_ref_vdd, ADT7411_REG_CFG3, ADT7411_CFG3_REF_VDD);
static struct attribute *adt7411_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp2_input.dev_attr.attr,
- &dev_attr_in0_input.attr,
- &sensor_dev_attr_in1_input.dev_attr.attr,
- &sensor_dev_attr_in2_input.dev_attr.attr,
- &sensor_dev_attr_in3_input.dev_attr.attr,
- &sensor_dev_attr_in4_input.dev_attr.attr,
- &sensor_dev_attr_in5_input.dev_attr.attr,
- &sensor_dev_attr_in6_input.dev_attr.attr,
- &sensor_dev_attr_in7_input.dev_attr.attr,
- &sensor_dev_attr_in8_input.dev_attr.attr,
&sensor_dev_attr_no_average.dev_attr.attr,
&sensor_dev_attr_fast_sampling.dev_attr.attr,
&sensor_dev_attr_adc_ref_vdd.dev_attr.attr,
NULL
};
+ATTRIBUTE_GROUPS(adt7411);
-static umode_t adt7411_attrs_visible(struct kobject *kobj,
- struct attribute *attr, int index)
+static int adt7411_read_in_vdd(struct device *dev, u32 attr, long *val)
{
- struct device *dev = container_of(kobj, struct device, kobj);
struct adt7411_data *data = dev_get_drvdata(dev);
- bool visible = true;
+ struct i2c_client *client = data->client;
+ int ret;
- if (attr == &sensor_dev_attr_temp2_input.dev_attr.attr)
- visible = data->use_ext_temp;
- else if (attr == &sensor_dev_attr_in1_input.dev_attr.attr ||
- attr == &sensor_dev_attr_in2_input.dev_attr.attr)
- visible = !data->use_ext_temp;
+ switch (attr) {
+ case hwmon_in_input:
+ ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
+ ADT7411_REG_VDD_MSB, 2);
+ if (ret < 0)
+ return ret;
+ *val = ret * 7000 / 1024;
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_read_in_chan(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
- return visible ? attr->mode : 0;
+ int ret;
+ int lsb_reg, lsb_shift;
+ int nr = channel - 1;
+
+ mutex_lock(&data->update_lock);
+ if (time_after_eq(jiffies, data->next_update)) {
+ ret = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
+ if (ret < 0)
+ goto exit_unlock;
+
+ if (ret & ADT7411_CFG3_REF_VDD) {
+ ret = adt7411_read_in_vdd(dev, hwmon_in_input,
+ &data->vref_cached);
+ if (ret < 0)
+ goto exit_unlock;
+ } else {
+ data->vref_cached = 2250;
+ }
+
+ data->next_update = jiffies + HZ;
+ }
+
+ switch (attr) {
+ case hwmon_in_input:
+ lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);
+ lsb_shift = 2 * (nr & 0x03);
+ ret = adt7411_read_10_bit(client, lsb_reg,
+ ADT7411_REG_EXT_TEMP_AIN1_MSB + nr,
+ lsb_shift);
+ if (ret < 0)
+ goto exit_unlock;
+ *val = ret * data->vref_cached / 1024;
+ ret = 0;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ exit_unlock:
+ mutex_unlock(&data->update_lock);
+ return ret;
}
-static const struct attribute_group adt7411_group = {
- .attrs = adt7411_attrs,
- .is_visible = adt7411_attrs_visible,
-};
-__ATTRIBUTE_GROUPS(adt7411);
+static int adt7411_read_in(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ if (channel == 0)
+ return adt7411_read_in_vdd(dev, attr, val);
+ else
+ return adt7411_read_in_chan(dev, attr, channel, val);
+}
+
+static int adt7411_read_temp(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret, regl, regh;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ regl = channel ? ADT7411_REG_EXT_TEMP_AIN14_LSB :
+ ADT7411_REG_INT_TEMP_VDD_LSB;
+ regh = channel ? ADT7411_REG_EXT_TEMP_AIN1_MSB :
+ ADT7411_REG_INT_TEMP_MSB;
+ ret = adt7411_read_10_bit(client, regl, regh, 0);
+ if (ret < 0)
+ return ret;
+ ret = ret & 0x200 ? ret - 0x400 : ret; /* 10 bit signed */
+ *val = ret * 250;
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ switch (type) {
+ case hwmon_in:
+ return adt7411_read_in(dev, attr, channel, val);
+ case hwmon_temp:
+ return adt7411_read_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t adt7411_is_visible(const void *_data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ const struct adt7411_data *data = _data;
+
+ switch (type) {
+ case hwmon_in:
+ if (channel > 0 && channel < 3)
+ return data->use_ext_temp ? 0 : S_IRUGO;
+ else
+ return S_IRUGO;
+ case hwmon_temp:
+ if (channel == 1)
+ return data->use_ext_temp ? S_IRUGO : 0;
+ else
+ return S_IRUGO;
+ default:
+ return 0;
+ }
+}
static int adt7411_detect(struct i2c_client *client,
struct i2c_board_info *info)
@@ -358,6 +371,51 @@ static int adt7411_init_device(struct adt7411_data *data)
return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val);
}
+static const u32 adt7411_in_config[] = {
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ 0
+};
+
+static const struct hwmon_channel_info adt7411_in = {
+ .type = hwmon_in,
+ .config = adt7411_in_config,
+};
+
+static const u32 adt7411_temp_config[] = {
+ HWMON_T_INPUT,
+ HWMON_T_INPUT,
+ 0
+};
+
+static const struct hwmon_channel_info adt7411_temp = {
+ .type = hwmon_temp,
+ .config = adt7411_temp_config,
+};
+
+static const struct hwmon_channel_info *adt7411_info[] = {
+ &adt7411_in,
+ &adt7411_temp,
+ NULL
+};
+
+static const struct hwmon_ops adt7411_hwmon_ops = {
+ .is_visible = adt7411_is_visible,
+ .read = adt7411_read,
+};
+
+static const struct hwmon_chip_info adt7411_chip_info = {
+ .ops = &adt7411_hwmon_ops,
+ .info = adt7411_info,
+};
+
static int adt7411_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -382,9 +440,10 @@ static int adt7411_probe(struct i2c_client *client,
/* force update on first occasion */
data->next_update = jiffies;
- hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
- data,
- adt7411_groups);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ data,
+ &adt7411_chip_info,
+ adt7411_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
diff --git a/drivers/hwmon/adt7462.c b/drivers/hwmon/adt7462.c
index 5929e126da63..19f2a6d48bac 100644
--- a/drivers/hwmon/adt7462.c
+++ b/drivers/hwmon/adt7462.c
@@ -810,8 +810,8 @@ static ssize_t set_temp_min(struct device *dev,
if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
return -EINVAL;
+ temp = clamp_val(temp, -64000, 191000);
temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
- temp = clamp_val(temp, 0, 255);
mutex_lock(&data->lock);
data->temp_min[attr->index] = temp;
@@ -848,8 +848,8 @@ static ssize_t set_temp_max(struct device *dev,
if (kstrtol(buf, 10, &temp) || !temp_enabled(data, attr->index))
return -EINVAL;
+ temp = clamp_val(temp, -64000, 191000);
temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
- temp = clamp_val(temp, 0, 255);
mutex_lock(&data->lock);
data->temp_max[attr->index] = temp;
@@ -912,9 +912,9 @@ static ssize_t set_volt_max(struct device *dev,
if (kstrtol(buf, 10, &temp) || !x)
return -EINVAL;
+ temp = clamp_val(temp, 0, 255 * x / 1000);
temp *= 1000; /* convert mV to uV */
temp = DIV_ROUND_CLOSEST(temp, x);
- temp = clamp_val(temp, 0, 255);
mutex_lock(&data->lock);
data->volt_max[attr->index] = temp;
@@ -954,9 +954,9 @@ static ssize_t set_volt_min(struct device *dev,
if (kstrtol(buf, 10, &temp) || !x)
return -EINVAL;
+ temp = clamp_val(temp, 0, 255 * x / 1000);
temp *= 1000; /* convert mV to uV */
temp = DIV_ROUND_CLOSEST(temp, x);
- temp = clamp_val(temp, 0, 255);
mutex_lock(&data->lock);
data->volt_min[attr->index] = temp;
@@ -1220,8 +1220,8 @@ static ssize_t set_pwm_hyst(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
+ temp = clamp_val(temp, 0, 15000);
temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = clamp_val(temp, 0, 15);
/* package things up */
temp &= ADT7462_PWM_HYST_MASK;
@@ -1306,8 +1306,8 @@ static ssize_t set_pwm_tmin(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
+ temp = clamp_val(temp, -64000, 191000);
temp = DIV_ROUND_CLOSEST(temp, 1000) + 64;
- temp = clamp_val(temp, 0, 255);
mutex_lock(&data->lock);
data->pwm_tmin[attr->index] = temp;
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c
index 6e60ca53406e..c9a1d9c25572 100644
--- a/drivers/hwmon/adt7470.c
+++ b/drivers/hwmon/adt7470.c
@@ -483,8 +483,8 @@ static ssize_t set_temp_min(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
+ temp = clamp_val(temp, -128000, 127000);
temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = clamp_val(temp, -128, 127);
mutex_lock(&data->lock);
data->temp_min[attr->index] = temp;
@@ -517,8 +517,8 @@ static ssize_t set_temp_max(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
+ temp = clamp_val(temp, -128000, 127000);
temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = clamp_val(temp, -128, 127);
mutex_lock(&data->lock);
data->temp_max[attr->index] = temp;
@@ -880,8 +880,8 @@ static ssize_t set_pwm_tmin(struct device *dev,
if (kstrtol(buf, 10, &temp))
return -EINVAL;
+ temp = clamp_val(temp, -128000, 127000);
temp = DIV_ROUND_CLOSEST(temp, 1000);
- temp = clamp_val(temp, -128, 127);
mutex_lock(&data->lock);
data->pwm_tmin[attr->index] = temp;
diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c
index 12e851a5af48..46b4e35fd555 100644
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -188,8 +188,8 @@ static struct amc6821_data *amc6821_update_device(struct device *dev)
!data->valid) {
for (i = 0; i < TEMP_IDX_LEN; i++)
- data->temp[i] = i2c_smbus_read_byte_data(client,
- temp_reg[i]);
+ data->temp[i] = (int8_t)i2c_smbus_read_byte_data(
+ client, temp_reg[i]);
data->stat1 = i2c_smbus_read_byte_data(client,
AMC6821_REG_STAT1);
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index 6a27eb2fed17..3ac4c03ba77b 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -51,6 +51,7 @@ static int force_tjmax;
module_param_named(tjmax, force_tjmax, int, 0444);
MODULE_PARM_DESC(tjmax, "TjMax value in degrees Celsius");
+#define PKG_SYSFS_ATTR_NO 1 /* Sysfs attribute for package temp */
#define BASE_SYSFS_ATTR_NO 2 /* Sysfs Base attr no for coretemp */
#define NUM_REAL_CORES 128 /* Number of Real cores per cpu */
#define CORETEMP_NAME_LENGTH 19 /* String Length of attrs */
@@ -58,7 +59,6 @@ MODULE_PARM_DESC(tjmax, "TjMax value in degrees Celsius");
#define TOTAL_ATTRS (MAX_CORE_ATTRS + 1)
#define MAX_CORE_DATA (NUM_REAL_CORES + BASE_SYSFS_ATTR_NO)
-#define TO_PHYS_ID(cpu) (cpu_data(cpu).phys_proc_id)
#define TO_CORE_ID(cpu) (cpu_data(cpu).cpu_core_id)
#define TO_ATTR_NO(cpu) (TO_CORE_ID(cpu) + BASE_SYSFS_ATTR_NO)
@@ -102,20 +102,17 @@ struct temp_data {
/* Platform Data per Physical CPU */
struct platform_data {
- struct device *hwmon_dev;
- u16 phys_proc_id;
- struct temp_data *core_data[MAX_CORE_DATA];
+ struct device *hwmon_dev;
+ u16 pkg_id;
+ struct cpumask cpumask;
+ struct temp_data *core_data[MAX_CORE_DATA];
struct device_attribute name_attr;
};
-struct pdev_entry {
- struct list_head list;
- struct platform_device *pdev;
- u16 phys_proc_id;
-};
-
-static LIST_HEAD(pdev_list);
-static DEFINE_MUTEX(pdev_list_mutex);
+/* Keep track of how many package pointers we allocated in init() */
+static int max_packages __read_mostly;
+/* Array of package pointers. Serialized by cpu hotplug lock */
+static struct platform_device **pkg_devices;
static ssize_t show_label(struct device *dev,
struct device_attribute *devattr, char *buf)
@@ -125,7 +122,7 @@ static ssize_t show_label(struct device *dev,
struct temp_data *tdata = pdata->core_data[attr->index];
if (tdata->is_pkg_data)
- return sprintf(buf, "Physical id %u\n", pdata->phys_proc_id);
+ return sprintf(buf, "Package id %u\n", pdata->pkg_id);
return sprintf(buf, "Core %u\n", tdata->cpu_core_id);
}
@@ -138,7 +135,9 @@ static ssize_t show_crit_alarm(struct device *dev,
struct platform_data *pdata = dev_get_drvdata(dev);
struct temp_data *tdata = pdata->core_data[attr->index];
+ mutex_lock(&tdata->update_lock);
rdmsr_on_cpu(tdata->cpu, tdata->status_reg, &eax, &edx);
+ mutex_unlock(&tdata->update_lock);
return sprintf(buf, "%d\n", (eax >> 5) & 1);
}
@@ -435,18 +434,10 @@ static int chk_ucode_version(unsigned int cpu)
static struct platform_device *coretemp_get_pdev(unsigned int cpu)
{
- u16 phys_proc_id = TO_PHYS_ID(cpu);
- struct pdev_entry *p;
-
- mutex_lock(&pdev_list_mutex);
+ int pkgid = topology_logical_package_id(cpu);
- list_for_each_entry(p, &pdev_list, list)
- if (p->phys_proc_id == phys_proc_id) {
- mutex_unlock(&pdev_list_mutex);
- return p->pdev;
- }
-
- mutex_unlock(&pdev_list_mutex);
+ if (pkgid >= 0 && pkgid < max_packages)
+ return pkg_devices[pkgid];
return NULL;
}
@@ -483,21 +474,11 @@ static int create_core_data(struct platform_device *pdev, unsigned int cpu,
* The attr number is always core id + 2
* The Pkgtemp will always show up as temp1_*, if available
*/
- attr_no = pkg_flag ? 1 : TO_ATTR_NO(cpu);
+ attr_no = pkg_flag ? PKG_SYSFS_ATTR_NO : TO_ATTR_NO(cpu);
if (attr_no > MAX_CORE_DATA - 1)
return -ERANGE;
- /*
- * Provide a single set of attributes for all HT siblings of a core
- * to avoid duplicate sensors (the processor ID and core ID of all
- * HT siblings of a core are the same).
- * Skip if a HT sibling of this core is already registered.
- * This is not an error.
- */
- if (pdata->core_data[attr_no] != NULL)
- return 0;
-
tdata = init_temp_data(cpu, pkg_flag);
if (!tdata)
return -ENOMEM;
@@ -539,21 +520,14 @@ exit_free:
return err;
}
-static void coretemp_add_core(unsigned int cpu, int pkg_flag)
+static void
+coretemp_add_core(struct platform_device *pdev, unsigned int cpu, int pkg_flag)
{
- struct platform_device *pdev = coretemp_get_pdev(cpu);
- int err;
-
- if (!pdev)
- return;
-
- err = create_core_data(pdev, cpu, pkg_flag);
- if (err)
+ if (create_core_data(pdev, cpu, pkg_flag))
dev_err(&pdev->dev, "Adding Core %u failed\n", cpu);
}
-static void coretemp_remove_core(struct platform_data *pdata,
- int indx)
+static void coretemp_remove_core(struct platform_data *pdata, int indx)
{
struct temp_data *tdata = pdata->core_data[indx];
@@ -574,7 +548,7 @@ static int coretemp_probe(struct platform_device *pdev)
if (!pdata)
return -ENOMEM;
- pdata->phys_proc_id = pdev->id;
+ pdata->pkg_id = pdev->id;
platform_set_drvdata(pdev, pdata);
pdata->hwmon_dev = devm_hwmon_device_register_with_groups(dev, DRVNAME,
@@ -602,85 +576,33 @@ static struct platform_driver coretemp_driver = {
.remove = coretemp_remove,
};
-static int coretemp_device_add(unsigned int cpu)
+static struct platform_device *coretemp_device_add(unsigned int cpu)
{
- int err;
+ int err, pkgid = topology_logical_package_id(cpu);
struct platform_device *pdev;
- struct pdev_entry *pdev_entry;
- mutex_lock(&pdev_list_mutex);
+ if (pkgid < 0)
+ return ERR_PTR(-ENOMEM);
- pdev = platform_device_alloc(DRVNAME, TO_PHYS_ID(cpu));
- if (!pdev) {
- err = -ENOMEM;
- pr_err("Device allocation failed\n");
- goto exit;
- }
-
- pdev_entry = kzalloc(sizeof(struct pdev_entry), GFP_KERNEL);
- if (!pdev_entry) {
- err = -ENOMEM;
- goto exit_device_put;
- }
+ pdev = platform_device_alloc(DRVNAME, pkgid);
+ if (!pdev)
+ return ERR_PTR(-ENOMEM);
err = platform_device_add(pdev);
if (err) {
- pr_err("Device addition failed (%d)\n", err);
- goto exit_device_free;
- }
-
- pdev_entry->pdev = pdev;
- pdev_entry->phys_proc_id = pdev->id;
-
- list_add_tail(&pdev_entry->list, &pdev_list);
- mutex_unlock(&pdev_list_mutex);
-
- return 0;
-
-exit_device_free:
- kfree(pdev_entry);
-exit_device_put:
- platform_device_put(pdev);
-exit:
- mutex_unlock(&pdev_list_mutex);
- return err;
-}
-
-static void coretemp_device_remove(unsigned int cpu)
-{
- struct pdev_entry *p, *n;
- u16 phys_proc_id = TO_PHYS_ID(cpu);
-
- mutex_lock(&pdev_list_mutex);
- list_for_each_entry_safe(p, n, &pdev_list, list) {
- if (p->phys_proc_id != phys_proc_id)
- continue;
- platform_device_unregister(p->pdev);
- list_del(&p->list);
- kfree(p);
+ platform_device_put(pdev);
+ return ERR_PTR(err);
}
- mutex_unlock(&pdev_list_mutex);
-}
-
-static bool is_any_core_online(struct platform_data *pdata)
-{
- int i;
- /* Find online cores, except pkgtemp data */
- for (i = MAX_CORE_DATA - 1; i >= 0; --i) {
- if (pdata->core_data[i] &&
- !pdata->core_data[i]->is_pkg_data) {
- return true;
- }
- }
- return false;
+ pkg_devices[pkgid] = pdev;
+ return pdev;
}
-static void get_core_online(unsigned int cpu)
+static int coretemp_cpu_online(unsigned int cpu)
{
- struct cpuinfo_x86 *c = &cpu_data(cpu);
struct platform_device *pdev = coretemp_get_pdev(cpu);
- int err;
+ struct cpuinfo_x86 *c = &cpu_data(cpu);
+ struct platform_data *pdata;
/*
* CPUID.06H.EAX[0] indicates whether the CPU has thermal
@@ -688,12 +610,12 @@ static void get_core_online(unsigned int cpu)
* without thermal sensors will be filtered out.
*/
if (!cpu_has(c, X86_FEATURE_DTHERM))
- return;
+ return -ENODEV;
if (!pdev) {
/* Check the microcode version of the CPU */
if (chk_ucode_version(cpu))
- return;
+ return -EINVAL;
/*
* Alright, we have DTS support.
@@ -701,101 +623,100 @@ static void get_core_online(unsigned int cpu)
* online. So, initialize per-pkg data structures and
* then bring this core online.
*/
- err = coretemp_device_add(cpu);
- if (err)
- return;
+ pdev = coretemp_device_add(cpu);
+ if (IS_ERR(pdev))
+ return PTR_ERR(pdev);
+
/*
* Check whether pkgtemp support is available.
* If so, add interfaces for pkgtemp.
*/
if (cpu_has(c, X86_FEATURE_PTS))
- coretemp_add_core(cpu, 1);
+ coretemp_add_core(pdev, cpu, 1);
}
+
+ pdata = platform_get_drvdata(pdev);
/*
- * Physical CPU device already exists.
- * So, just add interfaces for this core.
+ * Check whether a thread sibling is already online. If not add the
+ * interface for this CPU core.
*/
- coretemp_add_core(cpu, 0);
+ if (!cpumask_intersects(&pdata->cpumask, topology_sibling_cpumask(cpu)))
+ coretemp_add_core(pdev, cpu, 0);
+
+ cpumask_set_cpu(cpu, &pdata->cpumask);
+ return 0;
}
-static void put_core_offline(unsigned int cpu)
+static int coretemp_cpu_offline(unsigned int cpu)
{
- int i, indx;
- struct platform_data *pdata;
struct platform_device *pdev = coretemp_get_pdev(cpu);
+ struct platform_data *pd;
+ struct temp_data *tdata;
+ int indx, target;
/* If the physical CPU device does not exist, just return */
if (!pdev)
- return;
-
- pdata = platform_get_drvdata(pdev);
-
- indx = TO_ATTR_NO(cpu);
+ return 0;
/* The core id is too big, just return */
+ indx = TO_ATTR_NO(cpu);
if (indx > MAX_CORE_DATA - 1)
- return;
+ return 0;
- if (pdata->core_data[indx] && pdata->core_data[indx]->cpu == cpu)
- coretemp_remove_core(pdata, indx);
+ pd = platform_get_drvdata(pdev);
+ tdata = pd->core_data[indx];
+
+ cpumask_clear_cpu(cpu, &pd->cpumask);
/*
- * If a HT sibling of a core is taken offline, but another HT sibling
- * of the same core is still online, register the alternate sibling.
- * This ensures that exactly one set of attributes is provided as long
- * as at least one HT sibling of a core is online.
+ * If this is the last thread sibling, remove the CPU core
+ * interface, If there is still a sibling online, transfer the
+ * target cpu of that core interface to it.
*/
- for_each_sibling(i, cpu) {
- if (i != cpu) {
- get_core_online(i);
- /*
- * Display temperature sensor data for one HT sibling
- * per core only, so abort the loop after one such
- * sibling has been found.
- */
- break;
- }
+ target = cpumask_any_and(&pd->cpumask, topology_sibling_cpumask(cpu));
+ if (target >= nr_cpu_ids) {
+ coretemp_remove_core(pd, indx);
+ } else if (tdata && tdata->cpu == cpu) {
+ mutex_lock(&tdata->update_lock);
+ tdata->cpu = target;
+ mutex_unlock(&tdata->update_lock);
}
+
/*
- * If all cores in this pkg are offline, remove the device.
- * coretemp_device_remove calls unregister_platform_device,
- * which in turn calls coretemp_remove. This removes the
- * pkgtemp entry and does other clean ups.
+ * If all cores in this pkg are offline, remove the device. This
+ * will invoke the platform driver remove function, which cleans up
+ * the rest.
*/
- if (!is_any_core_online(pdata))
- coretemp_device_remove(cpu);
-}
+ if (cpumask_empty(&pd->cpumask)) {
+ pkg_devices[topology_logical_package_id(cpu)] = NULL;
+ platform_device_unregister(pdev);
+ return 0;
+ }
-static int coretemp_cpu_callback(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
-{
- unsigned int cpu = (unsigned long) hcpu;
-
- switch (action) {
- case CPU_ONLINE:
- case CPU_DOWN_FAILED:
- get_core_online(cpu);
- break;
- case CPU_DOWN_PREPARE:
- put_core_offline(cpu);
- break;
+ /*
+ * Check whether this core is the target for the package
+ * interface. We need to assign it to some other cpu.
+ */
+ tdata = pd->core_data[PKG_SYSFS_ATTR_NO];
+ if (tdata && tdata->cpu == cpu) {
+ target = cpumask_first(&pd->cpumask);
+ mutex_lock(&tdata->update_lock);
+ tdata->cpu = target;
+ mutex_unlock(&tdata->update_lock);
}
- return NOTIFY_OK;
+ return 0;
}
-
-static struct notifier_block coretemp_cpu_notifier __refdata = {
- .notifier_call = coretemp_cpu_callback,
-};
-
static const struct x86_cpu_id __initconst coretemp_ids[] = {
{ X86_VENDOR_INTEL, X86_FAMILY_ANY, X86_MODEL_ANY, X86_FEATURE_DTHERM },
{}
};
MODULE_DEVICE_TABLE(x86cpu, coretemp_ids);
+static enum cpuhp_state coretemp_hp_online;
+
static int __init coretemp_init(void)
{
- int i, err;
+ int err;
/*
* CPUID.06H.EAX[0] indicates whether the CPU has thermal
@@ -805,54 +726,38 @@ static int __init coretemp_init(void)
if (!x86_match_cpu(coretemp_ids))
return -ENODEV;
+ max_packages = topology_max_packages();
+ pkg_devices = kzalloc(max_packages * sizeof(struct platform_device *),
+ GFP_KERNEL);
+ if (!pkg_devices)
+ return -ENOMEM;
+
err = platform_driver_register(&coretemp_driver);
if (err)
- goto exit;
+ return err;
- cpu_notifier_register_begin();
- for_each_online_cpu(i)
- get_core_online(i);
-
-#ifndef CONFIG_HOTPLUG_CPU
- if (list_empty(&pdev_list)) {
- cpu_notifier_register_done();
- err = -ENODEV;
- goto exit_driver_unreg;
- }
-#endif
-
- __register_hotcpu_notifier(&coretemp_cpu_notifier);
- cpu_notifier_register_done();
+ err = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hwmon/coretemp:online",
+ coretemp_cpu_online, coretemp_cpu_offline);
+ if (err < 0)
+ goto outdrv;
+ coretemp_hp_online = err;
return 0;
-#ifndef CONFIG_HOTPLUG_CPU
-exit_driver_unreg:
+outdrv:
platform_driver_unregister(&coretemp_driver);
-#endif
-exit:
+ kfree(pkg_devices);
return err;
}
+module_init(coretemp_init)
static void __exit coretemp_exit(void)
{
- struct pdev_entry *p, *n;
-
- cpu_notifier_register_begin();
- __unregister_hotcpu_notifier(&coretemp_cpu_notifier);
- mutex_lock(&pdev_list_mutex);
- list_for_each_entry_safe(p, n, &pdev_list, list) {
- platform_device_unregister(p->pdev);
- list_del(&p->list);
- kfree(p);
- }
- mutex_unlock(&pdev_list_mutex);
- cpu_notifier_register_done();
+ cpuhp_remove_state(coretemp_hp_online);
platform_driver_unregister(&coretemp_driver);
+ kfree(pkg_devices);
}
+module_exit(coretemp_exit)
MODULE_AUTHOR("Rudolf Marek <r.marek@assembler.cz>");
MODULE_DESCRIPTION("Intel Core temperature monitor");
MODULE_LICENSE("GPL");
-
-module_init(coretemp_init)
-module_exit(coretemp_exit)
diff --git a/drivers/hwmon/ds620.c b/drivers/hwmon/ds620.c
index edf550fc4eef..0043a4c02b85 100644
--- a/drivers/hwmon/ds620.c
+++ b/drivers/hwmon/ds620.c
@@ -166,7 +166,7 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *da,
if (res)
return res;
- val = (val * 10 / 625) * 8;
+ val = (clamp_val(val, -128000, 128000) * 10 / 625) * 8;
mutex_lock(&data->update_lock);
data->temp[attr->index] = val;
diff --git a/drivers/hwmon/emc2103.c b/drivers/hwmon/emc2103.c
index 24e395c5907d..4b870ee9b0d3 100644
--- a/drivers/hwmon/emc2103.c
+++ b/drivers/hwmon/emc2103.c
@@ -251,7 +251,7 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *da,
if (result < 0)
return result;
- val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -63, 127);
+ val = DIV_ROUND_CLOSEST(clamp_val(val, -63000, 127000), 1000);
mutex_lock(&data->update_lock);
data->temp_min[nr] = val;
@@ -273,7 +273,7 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *da,
if (result < 0)
return result;
- val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -63, 127);
+ val = DIV_ROUND_CLOSEST(clamp_val(val, -63000, 127000), 1000);
mutex_lock(&data->update_lock);
data->temp_max[nr] = val;
diff --git a/drivers/hwmon/emc6w201.c b/drivers/hwmon/emc6w201.c
index f37fe2011640..4aee5adf9ef2 100644
--- a/drivers/hwmon/emc6w201.c
+++ b/drivers/hwmon/emc6w201.c
@@ -215,12 +215,13 @@ static ssize_t set_in(struct device *dev, struct device_attribute *devattr,
if (err < 0)
return err;
- val = DIV_ROUND_CLOSEST(val * 0xC0, nominal_mv[nr]);
+ val = clamp_val(val, 0, 255 * nominal_mv[nr] / 192);
+ val = DIV_ROUND_CLOSEST(val * 192, nominal_mv[nr]);
reg = (sf == min) ? EMC6W201_REG_IN_LOW(nr)
: EMC6W201_REG_IN_HIGH(nr);
mutex_lock(&data->update_lock);
- data->in[sf][nr] = clamp_val(val, 0, 255);
+ data->in[sf][nr] = val;
err = emc6w201_write8(client, reg, data->in[sf][nr]);
mutex_unlock(&data->update_lock);
@@ -252,12 +253,13 @@ static ssize_t set_temp(struct device *dev, struct device_attribute *devattr,
if (err < 0)
return err;
+ val = clamp_val(val, -127000, 127000);
val = DIV_ROUND_CLOSEST(val, 1000);
reg = (sf == min) ? EMC6W201_REG_TEMP_LOW(nr)
: EMC6W201_REG_TEMP_HIGH(nr);
mutex_lock(&data->update_lock);
- data->temp[sf][nr] = clamp_val(val, -127, 127);
+ data->temp[sf][nr] = val;
err = emc6w201_write8(client, reg, data->temp[sf][nr]);
mutex_unlock(&data->update_lock);
diff --git a/drivers/hwmon/g762.c b/drivers/hwmon/g762.c
index b96a2a9e4df7..628be9c95ff9 100644
--- a/drivers/hwmon/g762.c
+++ b/drivers/hwmon/g762.c
@@ -193,14 +193,17 @@ static inline unsigned int rpm_from_cnt(u8 cnt, u32 clk_freq, u16 p,
* Convert fan RPM value from sysfs into count value for fan controller
* register (FAN_SET_CNT).
*/
-static inline unsigned char cnt_from_rpm(u32 rpm, u32 clk_freq, u16 p,
+static inline unsigned char cnt_from_rpm(unsigned long rpm, u32 clk_freq, u16 p,
u8 clk_div, u8 gear_mult)
{
- if (!rpm) /* to stop the fan, set cnt to 255 */
+ unsigned long f1 = clk_freq * 30 * gear_mult;
+ unsigned long f2 = p * clk_div;
+
+ if (!rpm) /* to stop the fan, set cnt to 255 */
return 0xff;
- return clamp_val(((clk_freq * 30 * gear_mult) / (rpm * p * clk_div)),
- 0, 255);
+ rpm = clamp_val(rpm, f1 / (255 * f2), ULONG_MAX / f2);
+ return DIV_ROUND_CLOSEST(f1, rpm * f2);
}
/* helper to grab and cache data, at most one time per second */
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index a74c075a30ec..3932f9276c07 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -38,12 +38,15 @@ struct hwmon_device {
#define to_hwmon_device(d) container_of(d, struct hwmon_device, dev)
+#define MAX_SYSFS_ATTR_NAME_LENGTH 32
+
struct hwmon_device_attribute {
struct device_attribute dev_attr;
const struct hwmon_ops *ops;
enum hwmon_sensor_types type;
u32 attr;
int index;
+ char name[MAX_SYSFS_ATTR_NAME_LENGTH];
};
#define to_hwmon_attr(d) \
@@ -178,6 +181,22 @@ static ssize_t hwmon_attr_show(struct device *dev,
return sprintf(buf, "%ld\n", val);
}
+static ssize_t hwmon_attr_show_string(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct hwmon_device_attribute *hattr = to_hwmon_attr(devattr);
+ char *s;
+ int ret;
+
+ ret = hattr->ops->read_string(dev, hattr->type, hattr->attr,
+ hattr->index, &s);
+ if (ret < 0)
+ return ret;
+
+ return sprintf(buf, "%s\n", s);
+}
+
static ssize_t hwmon_attr_store(struct device *dev,
struct device_attribute *devattr,
const char *buf, size_t count)
@@ -205,6 +224,17 @@ static int hwmon_attr_base(enum hwmon_sensor_types type)
return 1;
}
+static bool is_string_attr(enum hwmon_sensor_types type, u32 attr)
+{
+ return (type == hwmon_temp && attr == hwmon_temp_label) ||
+ (type == hwmon_in && attr == hwmon_in_label) ||
+ (type == hwmon_curr && attr == hwmon_curr_label) ||
+ (type == hwmon_power && attr == hwmon_power_label) ||
+ (type == hwmon_energy && attr == hwmon_energy_label) ||
+ (type == hwmon_humidity && attr == hwmon_humidity_label) ||
+ (type == hwmon_fan && attr == hwmon_fan_label);
+}
+
static struct attribute *hwmon_genattr(struct device *dev,
const void *drvdata,
enum hwmon_sensor_types type,
@@ -218,6 +248,7 @@ static struct attribute *hwmon_genattr(struct device *dev,
struct attribute *a;
umode_t mode;
char *name;
+ bool is_string = is_string_attr(type, attr);
/* The attribute is invisible if there is no template string */
if (!template)
@@ -227,32 +258,31 @@ static struct attribute *hwmon_genattr(struct device *dev,
if (!mode)
return ERR_PTR(-ENOENT);
- if ((mode & S_IRUGO) && !ops->read)
+ if ((mode & S_IRUGO) && ((is_string && !ops->read_string) ||
+ (!is_string && !ops->read)))
return ERR_PTR(-EINVAL);
if ((mode & S_IWUGO) && !ops->write)
return ERR_PTR(-EINVAL);
+ hattr = devm_kzalloc(dev, sizeof(*hattr), GFP_KERNEL);
+ if (!hattr)
+ return ERR_PTR(-ENOMEM);
+
if (type == hwmon_chip) {
name = (char *)template;
} else {
- name = devm_kzalloc(dev, strlen(template) + 16, GFP_KERNEL);
- if (!name)
- return ERR_PTR(-ENOMEM);
- scnprintf(name, strlen(template) + 16, template,
+ scnprintf(hattr->name, sizeof(hattr->name), template,
index + hwmon_attr_base(type));
+ name = hattr->name;
}
- hattr = devm_kzalloc(dev, sizeof(*hattr), GFP_KERNEL);
- if (!hattr)
- return ERR_PTR(-ENOMEM);
-
hattr->type = type;
hattr->attr = attr;
hattr->index = index;
hattr->ops = ops;
dattr = &hattr->dev_attr;
- dattr->show = hwmon_attr_show;
+ dattr->show = is_string ? hwmon_attr_show_string : hwmon_attr_show;
dattr->store = hwmon_attr_store;
a = &dattr->attr;
@@ -263,7 +293,11 @@ static struct attribute *hwmon_genattr(struct device *dev,
return a;
}
-static const char * const hwmon_chip_attr_templates[] = {
+/*
+ * Chip attributes are not attribute templates but actual sysfs attributes.
+ * See hwmon_genattr() for special handling.
+ */
+static const char * const hwmon_chip_attrs[] = {
[hwmon_chip_temp_reset_history] = "temp_reset_history",
[hwmon_chip_in_reset_history] = "in_reset_history",
[hwmon_chip_curr_reset_history] = "curr_reset_history",
@@ -400,7 +434,7 @@ static const char * const hwmon_pwm_attr_templates[] = {
};
static const char * const *__templates[] = {
- [hwmon_chip] = hwmon_chip_attr_templates,
+ [hwmon_chip] = hwmon_chip_attrs,
[hwmon_temp] = hwmon_temp_attr_templates,
[hwmon_in] = hwmon_in_attr_templates,
[hwmon_curr] = hwmon_curr_attr_templates,
@@ -412,7 +446,7 @@ static const char * const *__templates[] = {
};
static const int __templates_size[] = {
- [hwmon_chip] = ARRAY_SIZE(hwmon_chip_attr_templates),
+ [hwmon_chip] = ARRAY_SIZE(hwmon_chip_attrs),
[hwmon_temp] = ARRAY_SIZE(hwmon_temp_attr_templates),
[hwmon_in] = ARRAY_SIZE(hwmon_in_attr_templates),
[hwmon_curr] = ARRAY_SIZE(hwmon_curr_attr_templates),
@@ -526,9 +560,9 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata,
hdev = &hwdev->dev;
- if (chip && chip->ops->is_visible) {
+ if (chip) {
struct attribute **attrs;
- int ngroups = 2;
+ int ngroups = 2; /* terminating NULL plus &hwdev->groups */
if (groups)
for (i = 0; groups[i]; i++)
@@ -572,7 +606,7 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata,
if (err)
goto free_hwmon;
- if (chip && chip->ops->is_visible && chip->ops->read &&
+ if (chip && chip->ops->read &&
chip->info[0]->type == hwmon_chip &&
(chip->info[0]->config[0] & HWMON_C_REGISTER_TZ)) {
const struct hwmon_channel_info **info = chip->info;
@@ -626,8 +660,8 @@ EXPORT_SYMBOL_GPL(hwmon_device_register_with_groups);
* @dev: the parent device
* @name: hwmon name attribute
* @drvdata: driver data to attach to created device
- * @info: Pointer to hwmon chip information
- * @groups - pointer to list of driver specific attribute groups
+ * @info: pointer to hwmon chip information
+ * @extra_groups: pointer to list of additional non-standard attribute groups
*
* hwmon_device_unregister() must be called when the device is no
* longer needed.
@@ -638,12 +672,12 @@ struct device *
hwmon_device_register_with_info(struct device *dev, const char *name,
void *drvdata,
const struct hwmon_chip_info *chip,
- const struct attribute_group **groups)
+ const struct attribute_group **extra_groups)
{
- if (chip && (!chip->ops || !chip->info))
+ if (chip && (!chip->ops || !chip->ops->is_visible || !chip->info))
return ERR_PTR(-EINVAL);
- return __hwmon_device_register(dev, name, drvdata, chip, groups);
+ return __hwmon_device_register(dev, name, drvdata, chip, extra_groups);
}
EXPORT_SYMBOL_GPL(hwmon_device_register_with_info);
@@ -658,6 +692,9 @@ EXPORT_SYMBOL_GPL(hwmon_device_register_with_info);
*/
struct device *hwmon_device_register(struct device *dev)
{
+ dev_warn(dev,
+ "hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info().\n");
+
return hwmon_device_register_with_groups(dev, NULL, NULL, NULL);
}
EXPORT_SYMBOL_GPL(hwmon_device_register);
diff --git a/drivers/hwmon/lm85.c b/drivers/hwmon/lm85.c
index 6ff773fcaefb..29c8136ce9c5 100644
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -136,7 +136,8 @@ static const int lm85_scaling[] = { /* .001 Volts */
#define SCALE(val, from, to) (((val) * (to) + ((from) / 2)) / (from))
#define INS_TO_REG(n, val) \
- clamp_val(SCALE(val, lm85_scaling[n], 192), 0, 255)
+ SCALE(clamp_val(val, 0, 255 * lm85_scaling[n] / 192), \
+ lm85_scaling[n], 192)
#define INSEXT_FROM_REG(n, val, ext) \
SCALE(((val) << 4) + (ext), 192 << 4, lm85_scaling[n])
diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index a5e295826aea..13cca3606e06 100644
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -121,7 +121,7 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
#define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192)
#define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \
- (val) * 192 >= (scale) * 255 ? 255 : \
+ (val) >= (scale) * 255 / 192 ? 255 : \
((val) * 192 + (scale) / 2) / (scale))
#define TEMP_FROM_REG(reg) ((reg) * 1000)
@@ -154,7 +154,6 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
*/
struct lm87_data {
- struct device *hwmon_dev;
struct mutex update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -181,6 +180,8 @@ struct lm87_data {
u16 alarms; /* register values, combined */
u8 vid; /* register values, combined */
u8 vrm;
+
+ const struct attribute_group *attr_groups[6];
};
static inline int lm87_read_value(struct i2c_client *client, u8 reg)
@@ -195,7 +196,7 @@ static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value)
static struct lm87_data *lm87_update_device(struct device *dev)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
mutex_lock(&data->update_lock);
@@ -309,7 +310,7 @@ static ssize_t show_in_max(struct device *dev,
static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -330,7 +331,7 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -396,7 +397,7 @@ static ssize_t show_temp_high(struct device *dev,
static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -416,7 +417,7 @@ static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr,
static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -495,7 +496,7 @@ static ssize_t show_fan_div(struct device *dev,
static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -522,7 +523,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
int nr = to_sensor_dev_attr(attr)->index;
long val;
@@ -635,7 +636,7 @@ static ssize_t show_aout(struct device *dev, struct device_attribute *attr,
static ssize_t set_aout(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
- struct i2c_client *client = to_i2c_client(dev);
+ struct i2c_client *client = dev_get_drvdata(dev);
struct lm87_data *data = i2c_get_clientdata(client);
long val;
int err;
@@ -841,23 +842,18 @@ static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info)
return 0;
}
-static void lm87_remove_files(struct i2c_client *client)
+static void lm87_restore_config(void *arg)
{
- struct device *dev = &client->dev;
-
- sysfs_remove_group(&dev->kobj, &lm87_group);
- sysfs_remove_group(&dev->kobj, &lm87_group_in6);
- sysfs_remove_group(&dev->kobj, &lm87_group_fan1);
- sysfs_remove_group(&dev->kobj, &lm87_group_in7);
- sysfs_remove_group(&dev->kobj, &lm87_group_fan2);
- sysfs_remove_group(&dev->kobj, &lm87_group_temp3);
- sysfs_remove_group(&dev->kobj, &lm87_group_in0_5);
- sysfs_remove_group(&dev->kobj, &lm87_group_vid);
+ struct i2c_client *client = arg;
+ struct lm87_data *data = i2c_get_clientdata(client);
+
+ lm87_write_value(client, LM87_REG_CONFIG, data->config);
}
-static void lm87_init_client(struct i2c_client *client)
+static int lm87_init_client(struct i2c_client *client)
{
struct lm87_data *data = i2c_get_clientdata(client);
+ int rc;
if (dev_get_platdata(&client->dev)) {
data->channel = *(u8 *)dev_get_platdata(&client->dev);
@@ -868,6 +864,10 @@ static void lm87_init_client(struct i2c_client *client)
}
data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F;
+ rc = devm_add_action(&client->dev, lm87_restore_config, client);
+ if (rc)
+ return rc;
+
if (!(data->config & 0x01)) {
int i;
@@ -895,12 +895,15 @@ static void lm87_init_client(struct i2c_client *client)
if ((data->config & 0x09) != 0x01)
lm87_write_value(client, LM87_REG_CONFIG,
(data->config & 0x77) | 0x01);
+ return 0;
}
static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct lm87_data *data;
+ struct device *hwmon_dev;
int err;
+ unsigned int group_tail = 0;
data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL);
if (!data)
@@ -910,7 +913,9 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
mutex_init(&data->update_lock);
/* Initialize the LM87 chip */
- lm87_init_client(client);
+ err = lm87_init_client(client);
+ if (err)
+ return err;
data->in_scale[0] = 2500;
data->in_scale[1] = 2700;
@@ -921,72 +926,34 @@ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id)
data->in_scale[6] = 1875;
data->in_scale[7] = 1875;
- /* Register sysfs hooks */
- err = sysfs_create_group(&client->dev.kobj, &lm87_group);
- if (err)
- goto exit_stop;
-
- if (data->channel & CHAN_NO_FAN(0)) {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6);
- if (err)
- goto exit_remove;
- } else {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1);
- if (err)
- goto exit_remove;
- }
-
- if (data->channel & CHAN_NO_FAN(1)) {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7);
- if (err)
- goto exit_remove;
- } else {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2);
- if (err)
- goto exit_remove;
- }
-
- if (data->channel & CHAN_TEMP3) {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3);
- if (err)
- goto exit_remove;
- } else {
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5);
- if (err)
- goto exit_remove;
- }
+ /*
+ * Construct the list of attributes, the list depends on the
+ * configuration of the chip
+ */
+ data->attr_groups[group_tail++] = &lm87_group;
+ if (data->channel & CHAN_NO_FAN(0))
+ data->attr_groups[group_tail++] = &lm87_group_in6;
+ else
+ data->attr_groups[group_tail++] = &lm87_group_fan1;
+
+ if (data->channel & CHAN_NO_FAN(1))
+ data->attr_groups[group_tail++] = &lm87_group_in7;
+ else
+ data->attr_groups[group_tail++] = &lm87_group_fan2;
+
+ if (data->channel & CHAN_TEMP3)
+ data->attr_groups[group_tail++] = &lm87_group_temp3;
+ else
+ data->attr_groups[group_tail++] = &lm87_group_in0_5;
if (!(data->channel & CHAN_NO_VID)) {
data->vrm = vid_which_vrm();
- err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid);
- if (err)
- goto exit_remove;
- }
-
- data->hwmon_dev = hwmon_device_register(&client->dev);
- if (IS_ERR(data->hwmon_dev)) {
- err = PTR_ERR(data->hwmon_dev);
- goto exit_remove;
+ data->attr_groups[group_tail++] = &lm87_group_vid;
}
- return 0;
-
-exit_remove:
- lm87_remove_files(client);
-exit_stop:
- lm87_write_value(client, LM87_REG_CONFIG, data->config);
- return err;
-}
-
-static int lm87_remove(struct i2c_client *client)
-{
- struct lm87_data *data = i2c_get_clientdata(client);
-
- hwmon_device_unregister(data->hwmon_dev);
- lm87_remove_files(client);
-
- lm87_write_value(client, LM87_REG_CONFIG, data->config);
- return 0;
+ hwmon_dev = devm_hwmon_device_register_with_groups(
+ &client->dev, client->name, client, data->attr_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
}
/*
@@ -1006,7 +973,6 @@ static struct i2c_driver lm87_driver = {
.name = "lm87",
},
.probe = lm87_probe,
- .remove = lm87_remove,
.id_table = lm87_id,
.detect = lm87_detect,
.address_list = normal_i2c,
diff --git a/drivers/hwmon/mcp3021.c b/drivers/hwmon/mcp3021.c
index 972444a14cca..1929734c3b1d 100644
--- a/drivers/hwmon/mcp3021.c
+++ b/drivers/hwmon/mcp3021.c
@@ -4,6 +4,7 @@
* Copyright (C) 2008-2009, 2012 Freescale Semiconductor, Inc.
* Author: Mingkai Hu <Mingkai.hu@freescale.com>
* Reworked by Sven Schuchmann <schuchmann@schleissheimer.de>
+ * DT support added by Clemens Gruber <clemens.gruber@pqgruber.com>
*
* This driver export the value of analog input voltage to sysfs, the
* voltage unit is mV. Through the sysfs interface, lm-sensors tool
@@ -22,11 +23,13 @@
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
-/* Vdd info */
-#define MCP3021_VDD_MAX 5500
-#define MCP3021_VDD_MIN 2700
-#define MCP3021_VDD_REF 3300
+/* Vdd / reference voltage in millivolt */
+#define MCP3021_VDD_REF_MAX 5500
+#define MCP3021_VDD_REF_MIN 2700
+#define MCP3021_VDD_REF_DEFAULT 3300
/* output format */
#define MCP3021_SAR_SHIFT 2
@@ -47,7 +50,7 @@ enum chips {
*/
struct mcp3021_data {
struct device *hwmon_dev;
- u32 vdd; /* device power supply */
+ u32 vdd; /* supply and reference voltage in millivolt */
u16 sar_shift;
u16 sar_mask;
u8 output_res;
@@ -99,13 +102,14 @@ static ssize_t show_in_input(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%d\n", in_input);
}
-static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input, NULL);
+static DEVICE_ATTR(in0_input, 0444, show_in_input, NULL);
static int mcp3021_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err;
struct mcp3021_data *data = NULL;
+ struct device_node *np = client->dev.of_node;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
return -ENODEV;
@@ -117,6 +121,21 @@ static int mcp3021_probe(struct i2c_client *client,
i2c_set_clientdata(client, data);
+ if (np) {
+ if (!of_property_read_u32(np, "reference-voltage-microvolt",
+ &data->vdd))
+ data->vdd /= 1000;
+ else
+ data->vdd = MCP3021_VDD_REF_DEFAULT;
+ } else {
+ u32 *pdata = dev_get_platdata(&client->dev);
+
+ if (pdata)
+ data->vdd = *pdata;
+ else
+ data->vdd = MCP3021_VDD_REF_DEFAULT;
+ }
+
switch (id->driver_data) {
case mcp3021:
data->sar_shift = MCP3021_SAR_SHIFT;
@@ -131,13 +150,8 @@ static int mcp3021_probe(struct i2c_client *client,
break;
}
- if (dev_get_platdata(&client->dev)) {
- data->vdd = *(u32 *)dev_get_platdata(&client->dev);
- if (data->vdd > MCP3021_VDD_MAX || data->vdd < MCP3021_VDD_MIN)
- return -EINVAL;
- } else {
- data->vdd = MCP3021_VDD_REF;
- }
+ if (data->vdd > MCP3021_VDD_REF_MAX || data->vdd < MCP3021_VDD_REF_MIN)
+ return -EINVAL;
err = sysfs_create_file(&client->dev.kobj, &dev_attr_in0_input.attr);
if (err)
@@ -173,9 +187,19 @@ static const struct i2c_device_id mcp3021_id[] = {
};
MODULE_DEVICE_TABLE(i2c, mcp3021_id);
+#ifdef CONFIG_OF
+static const struct of_device_id of_mcp3021_match[] = {
+ { .compatible = "microchip,mcp3021", .data = (void *)mcp3021 },
+ { .compatible = "microchip,mcp3221", .data = (void *)mcp3221 },
+ { }
+};
+MODULE_DEVICE_TABLE(of, of_mcp3021_match);
+#endif
+
static struct i2c_driver mcp3021_driver = {
.driver = {
.name = "mcp3021",
+ .of_match_table = of_match_ptr(of_mcp3021_match),
},
.probe = mcp3021_probe,
.remove = mcp3021_remove,
diff --git a/drivers/hwmon/nct7802.c b/drivers/hwmon/nct7802.c
index 3ce33d244cc0..12b94b094c0d 100644
--- a/drivers/hwmon/nct7802.c
+++ b/drivers/hwmon/nct7802.c
@@ -259,13 +259,15 @@ static int nct7802_read_fan_min(struct nct7802_data *data, u8 reg_fan_low,
ret = 0;
else if (ret)
ret = DIV_ROUND_CLOSEST(1350000U, ret);
+ else
+ ret = 1350000U;
abort:
mutex_unlock(&data->access_lock);
return ret;
}
static int nct7802_write_fan_min(struct nct7802_data *data, u8 reg_fan_low,
- u8 reg_fan_high, unsigned int limit)
+ u8 reg_fan_high, unsigned long limit)
{
int err;
@@ -326,8 +328,8 @@ static int nct7802_write_voltage(struct nct7802_data *data, int nr, int index,
int shift = 8 - REG_VOLTAGE_LIMIT_MSB_SHIFT[index - 1][nr];
int err;
+ voltage = clamp_val(voltage, 0, 0x3ff * nct7802_vmul[nr]);
voltage = DIV_ROUND_CLOSEST(voltage, nct7802_vmul[nr]);
- voltage = clamp_val(voltage, 0, 0x3ff);
mutex_lock(&data->access_lock);
err = regmap_write(data->regmap,
@@ -402,7 +404,7 @@ static ssize_t store_temp(struct device *dev, struct device_attribute *attr,
if (err < 0)
return err;
- val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), -128, 127);
+ val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000);
err = regmap_write(data->regmap, nr, val & 0xff);
return err ? : count;
diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
index 3baa4f4a8c5e..4ab5293c7bf0 100644
--- a/drivers/hwmon/pmbus/adm1275.c
+++ b/drivers/hwmon/pmbus/adm1275.c
@@ -499,15 +499,27 @@ static int adm1275_probe(struct i2c_client *client,
pindex = 2;
tindex = 3;
- info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT;
+ info->func[0] |= PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT |
+ PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
+
+ /* Enable VOUT if not enabled (it is disabled by default) */
+ if (!(config & ADM1278_VOUT_EN)) {
+ config |= ADM1278_VOUT_EN;
+ ret = i2c_smbus_write_byte_data(client,
+ ADM1275_PMON_CONFIG,
+ config);
+ if (ret < 0) {
+ dev_err(&client->dev,
+ "Failed to enable VOUT monitoring\n");
+ return -ENODEV;
+ }
+ }
+
if (config & ADM1278_TEMP1_EN)
info->func[0] |=
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
if (config & ADM1278_VIN_EN)
info->func[0] |= PMBUS_HAVE_VIN;
- if (config & ADM1278_VOUT_EN)
- info->func[0] |=
- PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT;
break;
case adm1293:
case adm1294:
diff --git a/drivers/hwmon/scpi-hwmon.c b/drivers/hwmon/scpi-hwmon.c
index 559a3dcd64d8..094f948f99ff 100644
--- a/drivers/hwmon/scpi-hwmon.c
+++ b/drivers/hwmon/scpi-hwmon.c
@@ -251,6 +251,7 @@ static const struct of_device_id scpi_of_match[] = {
{.compatible = "arm,scpi-sensors"},
{},
};
+MODULE_DEVICE_TABLE(of, scpi_of_match);
static struct platform_driver scpi_hwmon_platdrv = {
.driver = {
diff --git a/drivers/hwmon/smsc47m192.c b/drivers/hwmon/smsc47m192.c
index 6ac7cda72d4c..15650f247679 100644
--- a/drivers/hwmon/smsc47m192.c
+++ b/drivers/hwmon/smsc47m192.c
@@ -77,14 +77,15 @@ static inline unsigned int IN_FROM_REG(u8 reg, int n)
static inline u8 IN_TO_REG(unsigned long val, int n)
{
- return clamp_val(SCALE(val, 192, nom_mv[n]), 0, 255);
+ val = clamp_val(val, 0, nom_mv[n] * 255 / 192);
+ return SCALE(val, 192, nom_mv[n]);
}
/*
* TEMP: 0.001 degC units (-128C to +127C)
* REG: 1C/bit, two's complement
*/
-static inline s8 TEMP_TO_REG(int val)
+static inline s8 TEMP_TO_REG(long val)
{
return SCALE(clamp_val(val, -128000, 127000), 1, 1000);
}
diff --git a/drivers/hwmon/tc654.c b/drivers/hwmon/tc654.c
new file mode 100644
index 000000000000..18136e1f95fd
--- /dev/null
+++ b/drivers/hwmon/tc654.c
@@ -0,0 +1,514 @@
+/*
+ * tc654.c - Linux kernel modules for fan speed controller
+ *
+ * Copyright (C) 2016 Allied Telesis Labs NZ
+ *
+ * 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/bitops.h>
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/util_macros.h>
+
+enum tc654_regs {
+ TC654_REG_RPM1 = 0x00, /* RPM Output 1 */
+ TC654_REG_RPM2 = 0x01, /* RPM Output 2 */
+ TC654_REG_FAN_FAULT1 = 0x02, /* Fan Fault 1 Threshold */
+ TC654_REG_FAN_FAULT2 = 0x03, /* Fan Fault 2 Threshold */
+ TC654_REG_CONFIG = 0x04, /* Configuration */
+ TC654_REG_STATUS = 0x05, /* Status */
+ TC654_REG_DUTY_CYCLE = 0x06, /* Fan Speed Duty Cycle */
+ TC654_REG_MFR_ID = 0x07, /* Manufacturer Identification */
+ TC654_REG_VER_ID = 0x08, /* Version Identification */
+};
+
+/* Macros to easily index the registers */
+#define TC654_REG_RPM(idx) (TC654_REG_RPM1 + (idx))
+#define TC654_REG_FAN_FAULT(idx) (TC654_REG_FAN_FAULT1 + (idx))
+
+/* Config register bits */
+#define TC654_REG_CONFIG_RES BIT(6) /* Resolution Selection */
+#define TC654_REG_CONFIG_DUTYC BIT(5) /* Duty Cycle Control */
+#define TC654_REG_CONFIG_SDM BIT(0) /* Shutdown Mode */
+
+/* Status register bits */
+#define TC654_REG_STATUS_F2F BIT(1) /* Fan 2 Fault */
+#define TC654_REG_STATUS_F1F BIT(0) /* Fan 1 Fault */
+
+/* RPM resolution for RPM Output registers */
+#define TC654_HIGH_RPM_RESOLUTION 25 /* 25 RPM resolution */
+#define TC654_LOW_RPM_RESOLUTION 50 /* 50 RPM resolution */
+
+/* Convert to the fan fault RPM threshold from register value */
+#define TC654_FAN_FAULT_FROM_REG(val) ((val) * 50) /* 50 RPM resolution */
+
+/* Convert to register value from the fan fault RPM threshold */
+#define TC654_FAN_FAULT_TO_REG(val) (((val) / 50) & 0xff)
+
+/* Register data is read (and cached) at most once per second. */
+#define TC654_UPDATE_INTERVAL HZ
+
+struct tc654_data {
+ struct i2c_client *client;
+
+ /* update mutex */
+ struct mutex update_lock;
+
+ /* tc654 register cache */
+ bool valid;
+ unsigned long last_updated; /* in jiffies */
+
+ u8 rpm_output[2]; /* The fan RPM data for fans 1 and 2 is then
+ * written to registers RPM1 and RPM2
+ */
+ u8 fan_fault[2]; /* The Fan Fault Threshold Registers are used to
+ * set the fan fault threshold levels for fan 1
+ * and fan 2
+ */
+ u8 config; /* The Configuration Register is an 8-bit read/
+ * writable multi-function control register
+ * 7: Fan Fault Clear
+ * 1 = Clear Fan Fault
+ * 0 = Normal Operation (default)
+ * 6: Resolution Selection for RPM Output Registers
+ * RPM Output Registers (RPM1 and RPM2) will be
+ * set for
+ * 1 = 25 RPM (9-bit) resolution
+ * 0 = 50 RPM (8-bit) resolution (default)
+ * 5: Duty Cycle Control Method
+ * The V OUT duty cycle will be controlled via
+ * 1 = the SMBus interface.
+ * 0 = via the V IN analog input pin. (default)
+ * 4,3: Fan 2 Pulses Per Rotation
+ * 00 = 1
+ * 01 = 2 (default)
+ * 10 = 4
+ * 11 = 8
+ * 2,1: Fan 1 Pulses Per Rotation
+ * 00 = 1
+ * 01 = 2 (default)
+ * 10 = 4
+ * 11 = 8
+ * 0: Shutdown Mode
+ * 1 = Shutdown mode.
+ * 0 = Normal operation. (default)
+ */
+ u8 status; /* The Status register provides all the information
+ * about what is going on within the TC654/TC655
+ * devices.
+ * 7,6: Unimplemented, Read as '0'
+ * 5: Over-Temperature Fault Condition
+ * 1 = Over-Temperature condition has occurred
+ * 0 = Normal operation. V IN is less than 2.6V
+ * 4: RPM2 Counter Overflow
+ * 1 = Fault condition
+ * 0 = Normal operation
+ * 3: RPM1 Counter Overflow
+ * 1 = Fault condition
+ * 0 = Normal operation
+ * 2: V IN Input Status
+ * 1 = V IN is open
+ * 0 = Normal operation. voltage present at V IN
+ * 1: Fan 2 Fault
+ * 1 = Fault condition
+ * 0 = Normal operation
+ * 0: Fan 1 Fault
+ * 1 = Fault condition
+ * 0 = Normal operation
+ */
+ u8 duty_cycle; /* The DUTY_CYCLE register is a 4-bit read/
+ * writable register used to control the duty
+ * cycle of the V OUT output.
+ */
+};
+
+/* helper to grab and cache data, at most one time per second */
+static struct tc654_data *tc654_update_client(struct device *dev)
+{
+ struct tc654_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret = 0;
+
+ mutex_lock(&data->update_lock);
+ if (time_before(jiffies, data->last_updated + TC654_UPDATE_INTERVAL) &&
+ likely(data->valid))
+ goto out;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_RPM(0));
+ if (ret < 0)
+ goto out;
+ data->rpm_output[0] = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_RPM(1));
+ if (ret < 0)
+ goto out;
+ data->rpm_output[1] = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_FAN_FAULT(0));
+ if (ret < 0)
+ goto out;
+ data->fan_fault[0] = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_FAN_FAULT(1));
+ if (ret < 0)
+ goto out;
+ data->fan_fault[1] = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_CONFIG);
+ if (ret < 0)
+ goto out;
+ data->config = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_STATUS);
+ if (ret < 0)
+ goto out;
+ data->status = ret;
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_DUTY_CYCLE);
+ if (ret < 0)
+ goto out;
+ data->duty_cycle = ret & 0x0f;
+
+ data->last_updated = jiffies;
+ data->valid = true;
+out:
+ mutex_unlock(&data->update_lock);
+
+ if (ret < 0) /* upon error, encode it in return value */
+ data = ERR_PTR(ret);
+
+ return data;
+}
+
+/*
+ * sysfs attributes
+ */
+
+static ssize_t show_fan(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = tc654_update_client(dev);
+ int val;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ if (data->config & TC654_REG_CONFIG_RES)
+ val = data->rpm_output[nr] * TC654_HIGH_RPM_RESOLUTION;
+ else
+ val = data->rpm_output[nr] * TC654_LOW_RPM_RESOLUTION;
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t show_fan_min(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = tc654_update_client(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ return sprintf(buf, "%d\n",
+ TC654_FAN_FAULT_FROM_REG(data->fan_fault[nr]));
+}
+
+static ssize_t set_fan_min(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int ret;
+
+ if (kstrtoul(buf, 10, &val))
+ return -EINVAL;
+
+ val = clamp_val(val, 0, 12750);
+
+ mutex_lock(&data->update_lock);
+
+ data->fan_fault[nr] = TC654_FAN_FAULT_TO_REG(val);
+ ret = i2c_smbus_write_byte_data(client, TC654_REG_FAN_FAULT(nr),
+ data->fan_fault[nr]);
+
+ mutex_unlock(&data->update_lock);
+ return ret < 0 ? ret : count;
+}
+
+static ssize_t show_fan_alarm(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = tc654_update_client(dev);
+ int val;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ if (nr == 0)
+ val = !!(data->status & TC654_REG_STATUS_F1F);
+ else
+ val = !!(data->status & TC654_REG_STATUS_F2F);
+
+ return sprintf(buf, "%d\n", val);
+}
+
+static const u8 TC654_FAN_PULSE_SHIFT[] = { 1, 3 };
+
+static ssize_t show_fan_pulses(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = tc654_update_client(dev);
+ u8 val;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ val = BIT((data->config >> TC654_FAN_PULSE_SHIFT[nr]) & 0x03);
+ return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t set_fan_pulses(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(da)->index;
+ struct tc654_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ u8 config;
+ unsigned long val;
+ int ret;
+
+ if (kstrtoul(buf, 10, &val))
+ return -EINVAL;
+
+ switch (val) {
+ case 1:
+ config = 0;
+ break;
+ case 2:
+ config = 1;
+ break;
+ case 4:
+ config = 2;
+ break;
+ case 8:
+ config = 3;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&data->update_lock);
+
+ data->config &= ~(0x03 << TC654_FAN_PULSE_SHIFT[nr]);
+ data->config |= (config << TC654_FAN_PULSE_SHIFT[nr]);
+ ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config);
+
+ mutex_unlock(&data->update_lock);
+ return ret < 0 ? ret : count;
+}
+
+static ssize_t show_pwm_mode(struct device *dev,
+ struct device_attribute *da, char *buf)
+{
+ struct tc654_data *data = tc654_update_client(dev);
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ return sprintf(buf, "%d\n", !!(data->config & TC654_REG_CONFIG_DUTYC));
+}
+
+static ssize_t set_pwm_mode(struct device *dev,
+ struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct tc654_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int ret;
+
+ if (kstrtoul(buf, 10, &val))
+ return -EINVAL;
+
+ if (val != 0 && val != 1)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+
+ if (val)
+ data->config |= TC654_REG_CONFIG_DUTYC;
+ else
+ data->config &= ~TC654_REG_CONFIG_DUTYC;
+
+ ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config);
+
+ mutex_unlock(&data->update_lock);
+ return ret < 0 ? ret : count;
+}
+
+static const int tc654_pwm_map[16] = { 77, 88, 102, 112, 124, 136, 148, 160,
+ 172, 184, 196, 207, 219, 231, 243, 255};
+
+static ssize_t show_pwm(struct device *dev, struct device_attribute *da,
+ char *buf)
+{
+ struct tc654_data *data = tc654_update_client(dev);
+ int pwm;
+
+ if (IS_ERR(data))
+ return PTR_ERR(data);
+
+ if (data->config & TC654_REG_CONFIG_SDM)
+ pwm = 0;
+ else
+ pwm = tc654_pwm_map[data->duty_cycle];
+
+ return sprintf(buf, "%d\n", pwm);
+}
+
+static ssize_t set_pwm(struct device *dev, struct device_attribute *da,
+ const char *buf, size_t count)
+{
+ struct tc654_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int ret;
+
+ if (kstrtoul(buf, 10, &val))
+ return -EINVAL;
+ if (val > 255)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+
+ if (val == 0)
+ data->config |= TC654_REG_CONFIG_SDM;
+ else
+ data->config &= ~TC654_REG_CONFIG_SDM;
+
+ data->duty_cycle = find_closest(val, tc654_pwm_map,
+ ARRAY_SIZE(tc654_pwm_map));
+
+ ret = i2c_smbus_write_byte_data(client, TC654_REG_CONFIG, data->config);
+ if (ret < 0)
+ goto out;
+
+ ret = i2c_smbus_write_byte_data(client, TC654_REG_DUTY_CYCLE,
+ data->duty_cycle);
+
+out:
+ mutex_unlock(&data->update_lock);
+ return ret < 0 ? ret : count;
+}
+
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
+ set_fan_min, 0);
+static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
+ set_fan_min, 1);
+static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan1_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
+ set_fan_pulses, 0);
+static SENSOR_DEVICE_ATTR(fan2_pulses, S_IWUSR | S_IRUGO, show_fan_pulses,
+ set_fan_pulses, 1);
+static SENSOR_DEVICE_ATTR(pwm1_mode, S_IWUSR | S_IRUGO,
+ show_pwm_mode, set_pwm_mode, 0);
+static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm,
+ set_pwm, 0);
+
+/* Driver data */
+static struct attribute *tc654_attrs[] = {
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+ &sensor_dev_attr_fan2_min.dev_attr.attr,
+ &sensor_dev_attr_fan1_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan2_alarm.dev_attr.attr,
+ &sensor_dev_attr_fan1_pulses.dev_attr.attr,
+ &sensor_dev_attr_fan2_pulses.dev_attr.attr,
+ &sensor_dev_attr_pwm1_mode.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ NULL
+};
+
+ATTRIBUTE_GROUPS(tc654);
+
+/*
+ * device probe and removal
+ */
+
+static int tc654_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct tc654_data *data;
+ struct device *hwmon_dev;
+ int ret;
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ data = devm_kzalloc(dev, sizeof(struct tc654_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ mutex_init(&data->update_lock);
+
+ ret = i2c_smbus_read_byte_data(client, TC654_REG_CONFIG);
+ if (ret < 0)
+ return ret;
+
+ data->config = ret;
+
+ hwmon_dev =
+ devm_hwmon_device_register_with_groups(dev, client->name, data,
+ tc654_groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static const struct i2c_device_id tc654_id[] = {
+ {"tc654", 0},
+ {"tc655", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, tc654_id);
+
+static struct i2c_driver tc654_driver = {
+ .driver = {
+ .name = "tc654",
+ },
+ .probe = tc654_probe,
+ .id_table = tc654_id,
+};
+
+module_i2c_driver(tc654_driver);
+
+MODULE_AUTHOR("Allied Telesis Labs");
+MODULE_DESCRIPTION("Microchip TC654/TC655 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/tmp108.c b/drivers/hwmon/tmp108.c
new file mode 100644
index 000000000000..91bb94639286
--- /dev/null
+++ b/drivers/hwmon/tmp108.c
@@ -0,0 +1,469 @@
+/* Texas Instruments TMP108 SMBus temperature sensor driver
+ *
+ * Copyright (C) 2016 John Muir <john@jmuir.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/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+
+#define DRIVER_NAME "tmp108"
+
+#define TMP108_REG_TEMP 0x00
+#define TMP108_REG_CONF 0x01
+#define TMP108_REG_TLOW 0x02
+#define TMP108_REG_THIGH 0x03
+
+#define TMP108_TEMP_MIN_MC -50000 /* Minimum millicelcius. */
+#define TMP108_TEMP_MAX_MC 127937 /* Maximum millicelcius. */
+
+/* Configuration register bits.
+ * Note: these bit definitions are byte swapped.
+ */
+#define TMP108_CONF_M0 0x0100 /* Sensor mode. */
+#define TMP108_CONF_M1 0x0200
+#define TMP108_CONF_TM 0x0400 /* Thermostat mode. */
+#define TMP108_CONF_FL 0x0800 /* Watchdog flag - TLOW */
+#define TMP108_CONF_FH 0x1000 /* Watchdog flag - THIGH */
+#define TMP108_CONF_CR0 0x2000 /* Conversion rate. */
+#define TMP108_CONF_CR1 0x4000
+#define TMP108_CONF_ID 0x8000
+#define TMP108_CONF_HYS0 0x0010 /* Hysteresis. */
+#define TMP108_CONF_HYS1 0x0020
+#define TMP108_CONF_POL 0x0080 /* Polarity of alert. */
+
+/* Defaults set by the hardware upon reset. */
+#define TMP108_CONF_DEFAULTS (TMP108_CONF_CR0 | TMP108_CONF_TM |\
+ TMP108_CONF_HYS0 | TMP108_CONF_M1)
+/* These bits are read-only. */
+#define TMP108_CONF_READ_ONLY (TMP108_CONF_FL | TMP108_CONF_FH |\
+ TMP108_CONF_ID)
+
+#define TMP108_CONF_MODE_MASK (TMP108_CONF_M0|TMP108_CONF_M1)
+#define TMP108_MODE_SHUTDOWN 0x0000
+#define TMP108_MODE_ONE_SHOT TMP108_CONF_M0
+#define TMP108_MODE_CONTINUOUS TMP108_CONF_M1 /* Default */
+ /* When M1 is set, M0 is ignored. */
+
+#define TMP108_CONF_CONVRATE_MASK (TMP108_CONF_CR0|TMP108_CONF_CR1)
+#define TMP108_CONVRATE_0P25HZ 0x0000
+#define TMP108_CONVRATE_1HZ TMP108_CONF_CR0 /* Default */
+#define TMP108_CONVRATE_4HZ TMP108_CONF_CR1
+#define TMP108_CONVRATE_16HZ (TMP108_CONF_CR0|TMP108_CONF_CR1)
+
+#define TMP108_CONF_HYSTERESIS_MASK (TMP108_CONF_HYS0|TMP108_CONF_HYS1)
+#define TMP108_HYSTERESIS_0C 0x0000
+#define TMP108_HYSTERESIS_1C TMP108_CONF_HYS0 /* Default */
+#define TMP108_HYSTERESIS_2C TMP108_CONF_HYS1
+#define TMP108_HYSTERESIS_4C (TMP108_CONF_HYS0|TMP108_CONF_HYS1)
+
+#define TMP108_CONVERSION_TIME_MS 30 /* in milli-seconds */
+
+struct tmp108 {
+ struct regmap *regmap;
+ u16 orig_config;
+ unsigned long ready_time;
+};
+
+/* convert 12-bit TMP108 register value to milliCelsius */
+static inline int tmp108_temp_reg_to_mC(s16 val)
+{
+ return (val & ~0x0f) * 1000 / 256;
+}
+
+/* convert milliCelsius to left adjusted 12-bit TMP108 register value */
+static inline u16 tmp108_mC_to_temp_reg(int val)
+{
+ return (val * 256) / 1000;
+}
+
+static int tmp108_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *temp)
+{
+ struct tmp108 *tmp108 = dev_get_drvdata(dev);
+ unsigned int regval;
+ int err, hyst;
+
+ if (type == hwmon_chip) {
+ if (attr == hwmon_chip_update_interval) {
+ err = regmap_read(tmp108->regmap, TMP108_REG_CONF,
+ &regval);
+ if (err < 0)
+ return err;
+ switch (regval & TMP108_CONF_CONVRATE_MASK) {
+ case TMP108_CONVRATE_0P25HZ:
+ default:
+ *temp = 4000;
+ break;
+ case TMP108_CONVRATE_1HZ:
+ *temp = 1000;
+ break;
+ case TMP108_CONVRATE_4HZ:
+ *temp = 250;
+ break;
+ case TMP108_CONVRATE_16HZ:
+ *temp = 63;
+ break;
+ }
+ return 0;
+ }
+ return -EOPNOTSUPP;
+ }
+
+ switch (attr) {
+ case hwmon_temp_input:
+ /* Is it too early to return a conversion ? */
+ if (time_before(jiffies, tmp108->ready_time)) {
+ dev_dbg(dev, "%s: Conversion not ready yet..\n",
+ __func__);
+ return -EAGAIN;
+ }
+ err = regmap_read(tmp108->regmap, TMP108_REG_TEMP, &regval);
+ if (err < 0)
+ return err;
+ *temp = tmp108_temp_reg_to_mC(regval);
+ break;
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ err = regmap_read(tmp108->regmap, attr == hwmon_temp_min ?
+ TMP108_REG_TLOW : TMP108_REG_THIGH, &regval);
+ if (err < 0)
+ return err;
+ *temp = tmp108_temp_reg_to_mC(regval);
+ break;
+ case hwmon_temp_min_alarm:
+ case hwmon_temp_max_alarm:
+ err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);
+ if (err < 0)
+ return err;
+ *temp = !!(regval & (attr == hwmon_temp_min_alarm ?
+ TMP108_CONF_FL : TMP108_CONF_FH));
+ break;
+ case hwmon_temp_min_hyst:
+ case hwmon_temp_max_hyst:
+ err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &regval);
+ if (err < 0)
+ return err;
+ switch (regval & TMP108_CONF_HYSTERESIS_MASK) {
+ case TMP108_HYSTERESIS_0C:
+ default:
+ hyst = 0;
+ break;
+ case TMP108_HYSTERESIS_1C:
+ hyst = 1000;
+ break;
+ case TMP108_HYSTERESIS_2C:
+ hyst = 2000;
+ break;
+ case TMP108_HYSTERESIS_4C:
+ hyst = 4000;
+ break;
+ }
+ err = regmap_read(tmp108->regmap, attr == hwmon_temp_min_hyst ?
+ TMP108_REG_TLOW : TMP108_REG_THIGH, &regval);
+ if (err < 0)
+ return err;
+ *temp = tmp108_temp_reg_to_mC(regval);
+ if (attr == hwmon_temp_min_hyst)
+ *temp += hyst;
+ else
+ *temp -= hyst;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int tmp108_write(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long temp)
+{
+ struct tmp108 *tmp108 = dev_get_drvdata(dev);
+ u32 regval, mask;
+ int err;
+
+ if (type == hwmon_chip) {
+ if (attr == hwmon_chip_update_interval) {
+ if (temp < 156)
+ mask = TMP108_CONVRATE_16HZ;
+ else if (temp < 625)
+ mask = TMP108_CONVRATE_4HZ;
+ else if (temp < 2500)
+ mask = TMP108_CONVRATE_1HZ;
+ else
+ mask = TMP108_CONVRATE_0P25HZ;
+ return regmap_update_bits(tmp108->regmap,
+ TMP108_REG_CONF,
+ TMP108_CONF_CONVRATE_MASK,
+ mask);
+ }
+ return -EOPNOTSUPP;
+ }
+
+ switch (attr) {
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ temp = clamp_val(temp, TMP108_TEMP_MIN_MC, TMP108_TEMP_MAX_MC);
+ return regmap_write(tmp108->regmap,
+ attr == hwmon_temp_min ?
+ TMP108_REG_TLOW : TMP108_REG_THIGH,
+ tmp108_mC_to_temp_reg(temp));
+ case hwmon_temp_min_hyst:
+ case hwmon_temp_max_hyst:
+ temp = clamp_val(temp, TMP108_TEMP_MIN_MC, TMP108_TEMP_MAX_MC);
+ err = regmap_read(tmp108->regmap,
+ attr == hwmon_temp_min_hyst ?
+ TMP108_REG_TLOW : TMP108_REG_THIGH,
+ &regval);
+ if (err < 0)
+ return err;
+ if (attr == hwmon_temp_min_hyst)
+ temp -= tmp108_temp_reg_to_mC(regval);
+ else
+ temp = tmp108_temp_reg_to_mC(regval) - temp;
+ if (temp < 500)
+ mask = TMP108_HYSTERESIS_0C;
+ else if (temp < 1500)
+ mask = TMP108_HYSTERESIS_1C;
+ else if (temp < 3000)
+ mask = TMP108_HYSTERESIS_2C;
+ else
+ mask = TMP108_HYSTERESIS_4C;
+ return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,
+ TMP108_CONF_HYSTERESIS_MASK, mask);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t tmp108_is_visible(const void *data, enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ if (type == hwmon_chip && attr == hwmon_chip_update_interval)
+ return 0644;
+
+ if (type != hwmon_temp)
+ return 0;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_min_alarm:
+ case hwmon_temp_max_alarm:
+ return 0444;
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ case hwmon_temp_min_hyst:
+ case hwmon_temp_max_hyst:
+ return 0644;
+ default:
+ return 0;
+ }
+}
+
+static u32 tmp108_chip_config[] = {
+ HWMON_C_REGISTER_TZ | HWMON_C_UPDATE_INTERVAL,
+ 0
+};
+
+static const struct hwmon_channel_info tmp108_chip = {
+ .type = hwmon_chip,
+ .config = tmp108_chip_config,
+};
+
+static u32 tmp108_temp_config[] = {
+ HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN | HWMON_T_MIN_HYST
+ | HWMON_T_MAX_HYST | HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM,
+ 0
+};
+
+static const struct hwmon_channel_info tmp108_temp = {
+ .type = hwmon_temp,
+ .config = tmp108_temp_config,
+};
+
+static const struct hwmon_channel_info *tmp108_info[] = {
+ &tmp108_chip,
+ &tmp108_temp,
+ NULL
+};
+
+static const struct hwmon_ops tmp108_hwmon_ops = {
+ .is_visible = tmp108_is_visible,
+ .read = tmp108_read,
+ .write = tmp108_write,
+};
+
+static const struct hwmon_chip_info tmp108_chip_info = {
+ .ops = &tmp108_hwmon_ops,
+ .info = tmp108_info,
+};
+
+static void tmp108_restore_config(void *data)
+{
+ struct tmp108 *tmp108 = data;
+
+ regmap_write(tmp108->regmap, TMP108_REG_CONF, tmp108->orig_config);
+}
+
+static bool tmp108_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+ return reg != TMP108_REG_TEMP;
+}
+
+static bool tmp108_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ /* Configuration register must be volatile to enable FL and FH. */
+ return reg == TMP108_REG_TEMP || reg == TMP108_REG_CONF;
+}
+
+static const struct regmap_config tmp108_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .max_register = TMP108_REG_THIGH,
+ .writeable_reg = tmp108_is_writeable_reg,
+ .volatile_reg = tmp108_is_volatile_reg,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+ .cache_type = REGCACHE_RBTREE,
+ .use_single_rw = true,
+};
+
+static int tmp108_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct tmp108 *tmp108;
+ int err;
+ u32 config;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_WORD_DATA)) {
+ dev_err(dev,
+ "adapter doesn't support SMBus word transactions\n");
+ return -ENODEV;
+ }
+
+ tmp108 = devm_kzalloc(dev, sizeof(*tmp108), GFP_KERNEL);
+ if (!tmp108)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, tmp108);
+
+ tmp108->regmap = devm_regmap_init_i2c(client, &tmp108_regmap_config);
+ if (IS_ERR(tmp108->regmap)) {
+ err = PTR_ERR(tmp108->regmap);
+ dev_err(dev, "regmap init failed: %d", err);
+ return err;
+ }
+
+ err = regmap_read(tmp108->regmap, TMP108_REG_CONF, &config);
+ if (err < 0) {
+ dev_err(dev, "error reading config register: %d", err);
+ return err;
+ }
+ tmp108->orig_config = config;
+
+ /* Only continuous mode is supported. */
+ config &= ~TMP108_CONF_MODE_MASK;
+ config |= TMP108_MODE_CONTINUOUS;
+
+ /* Only comparator mode is supported. */
+ config &= ~TMP108_CONF_TM;
+
+ err = regmap_write(tmp108->regmap, TMP108_REG_CONF, config);
+ if (err < 0) {
+ dev_err(dev, "error writing config register: %d", err);
+ return err;
+ }
+
+ tmp108->ready_time = jiffies;
+ if ((tmp108->orig_config & TMP108_CONF_MODE_MASK) ==
+ TMP108_MODE_SHUTDOWN)
+ tmp108->ready_time +=
+ msecs_to_jiffies(TMP108_CONVERSION_TIME_MS);
+
+ err = devm_add_action_or_reset(dev, tmp108_restore_config, tmp108);
+ if (err) {
+ dev_err(dev, "add action or reset failed: %d", err);
+ return err;
+ }
+
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ tmp108,
+ &tmp108_chip_info,
+ NULL);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static int __maybe_unused tmp108_suspend(struct device *dev)
+{
+ struct tmp108 *tmp108 = dev_get_drvdata(dev);
+
+ return regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,
+ TMP108_CONF_MODE_MASK, TMP108_MODE_SHUTDOWN);
+}
+
+static int __maybe_unused tmp108_resume(struct device *dev)
+{
+ struct tmp108 *tmp108 = dev_get_drvdata(dev);
+ int err;
+
+ err = regmap_update_bits(tmp108->regmap, TMP108_REG_CONF,
+ TMP108_CONF_MODE_MASK, TMP108_MODE_CONTINUOUS);
+ tmp108->ready_time = jiffies +
+ msecs_to_jiffies(TMP108_CONVERSION_TIME_MS);
+ return err;
+}
+
+static SIMPLE_DEV_PM_OPS(tmp108_dev_pm_ops, tmp108_suspend, tmp108_resume);
+
+static const struct i2c_device_id tmp108_i2c_ids[] = {
+ { "tmp108", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tmp108_i2c_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id tmp108_of_ids[] = {
+ { .compatible = "ti,tmp108", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, tmp108_of_ids);
+#endif
+
+static struct i2c_driver tmp108_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .pm = &tmp108_dev_pm_ops,
+ .of_match_table = of_match_ptr(tmp108_of_ids),
+ },
+ .probe = tmp108_probe,
+ .id_table = tmp108_i2c_ids,
+};
+
+module_i2c_driver(tmp108_driver);
+
+MODULE_AUTHOR("John Muir <john@jmuir.com>");
+MODULE_DESCRIPTION("Texas Instruments TMP108 temperature sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c
index ac91c07e3f90..d1f209a5feac 100644
--- a/drivers/hwmon/via-cputemp.c
+++ b/drivers/hwmon/via-cputemp.c
@@ -220,7 +220,7 @@ struct pdev_entry {
static LIST_HEAD(pdev_list);
static DEFINE_MUTEX(pdev_list_mutex);
-static int via_cputemp_device_add(unsigned int cpu)
+static int via_cputemp_online(unsigned int cpu)
{
int err;
struct platform_device *pdev;
@@ -261,7 +261,7 @@ exit:
return err;
}
-static void via_cputemp_device_remove(unsigned int cpu)
+static int via_cputemp_down_prep(unsigned int cpu)
{
struct pdev_entry *p;
@@ -272,33 +272,13 @@ static void via_cputemp_device_remove(unsigned int cpu)
list_del(&p->list);
mutex_unlock(&pdev_list_mutex);
kfree(p);
- return;
+ return 0;
}
}
mutex_unlock(&pdev_list_mutex);
+ return 0;
}
-static int via_cputemp_cpu_callback(struct notifier_block *nfb,
- unsigned long action, void *hcpu)
-{
- unsigned int cpu = (unsigned long) hcpu;
-
- switch (action) {
- case CPU_ONLINE:
- case CPU_DOWN_FAILED:
- via_cputemp_device_add(cpu);
- break;
- case CPU_DOWN_PREPARE:
- via_cputemp_device_remove(cpu);
- break;
- }
- return NOTIFY_OK;
-}
-
-static struct notifier_block via_cputemp_cpu_notifier __refdata = {
- .notifier_call = via_cputemp_cpu_callback,
-};
-
static const struct x86_cpu_id __initconst cputemp_ids[] = {
{ X86_VENDOR_CENTAUR, 6, 0xa, }, /* C7 A */
{ X86_VENDOR_CENTAUR, 6, 0xd, }, /* C7 D */
@@ -307,9 +287,11 @@ static const struct x86_cpu_id __initconst cputemp_ids[] = {
};
MODULE_DEVICE_TABLE(x86cpu, cputemp_ids);
+static enum cpuhp_state via_temp_online;
+
static int __init via_cputemp_init(void)
{
- int i, err;
+ int err;
if (!x86_match_cpu(cputemp_ids))
return -ENODEV;
@@ -318,58 +300,33 @@ static int __init via_cputemp_init(void)
if (err)
goto exit;
- cpu_notifier_register_begin();
- for_each_online_cpu(i) {
- struct cpuinfo_x86 *c = &cpu_data(i);
-
- if (c->x86 != 6)
- continue;
-
- if (c->x86_model < 0x0a)
- continue;
-
- if (c->x86_model > 0x0f) {
- pr_warn("Unknown CPU model 0x%x\n", c->x86_model);
- continue;
- }
-
- via_cputemp_device_add(i);
- }
+ err = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hwmon/via:online",
+ via_cputemp_online, via_cputemp_down_prep);
+ if (err < 0)
+ goto exit_driver_unreg;
+ via_temp_online = err;
#ifndef CONFIG_HOTPLUG_CPU
if (list_empty(&pdev_list)) {
- cpu_notifier_register_done();
err = -ENODEV;
- goto exit_driver_unreg;
+ goto exit_hp_unreg;
}
#endif
-
- __register_hotcpu_notifier(&via_cputemp_cpu_notifier);
- cpu_notifier_register_done();
return 0;
#ifndef CONFIG_HOTPLUG_CPU
+exit_hp_unreg:
+ cpuhp_remove_state_nocalls(via_temp_online);
+#endif
exit_driver_unreg:
platform_driver_unregister(&via_cputemp_driver);
-#endif
exit:
return err;
}
static void __exit via_cputemp_exit(void)
{
- struct pdev_entry *p, *n;
-
- cpu_notifier_register_begin();
- __unregister_hotcpu_notifier(&via_cputemp_cpu_notifier);
- mutex_lock(&pdev_list_mutex);
- list_for_each_entry_safe(p, n, &pdev_list, list) {
- platform_device_unregister(p->pdev);
- list_del(&p->list);
- kfree(p);
- }
- mutex_unlock(&pdev_list_mutex);
- cpu_notifier_register_done();
+ cpuhp_remove_state(via_temp_online);
platform_driver_unregister(&via_cputemp_driver);
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-06 21:43:36 +0300