adt7475.c (b180d0508475c5c55085839d22f454c69379eacc) adt7475.c (f99318b2540da75e663603e1a0faef30a3bb0c92)
1/*
2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6
7 * Derived from the lm83 driver by Jean Delvare
8 *

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71#define REG_REMOTE1_HYSTERSIS 0x6D
72#define REG_REMOTE2_HYSTERSIS 0x6E
73
74#define REG_TEMP_OFFSET_BASE 0x70
75
76#define REG_EXTEND1 0x76
77#define REG_EXTEND2 0x77
78#define REG_CONFIG5 0x7C
1/*
2 * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives
3 * Copyright (C) 2007-2008, Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
5 * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
6
7 * Derived from the lm83 driver by Jean Delvare
8 *

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71#define REG_REMOTE1_HYSTERSIS 0x6D
72#define REG_REMOTE2_HYSTERSIS 0x6E
73
74#define REG_TEMP_OFFSET_BASE 0x70
75
76#define REG_EXTEND1 0x76
77#define REG_EXTEND2 0x77
78#define REG_CONFIG5 0x7C
79#define REG_CONFIG4 0x7D
79
80
81#define CONFIG4_MAXDUTY 0x08
82
80#define CONFIG5_TWOSCOMP 0x01
81#define CONFIG5_TEMPOFFSET 0x02
82
83/* ADT7475 Settings */
84
85#define ADT7475_VOLTAGE_COUNT 2
86#define ADT7475_TEMP_COUNT 3
87#define ADT7475_TACH_COUNT 4

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127struct adt7475_data {
128 struct device *hwmon_dev;
129 struct mutex lock;
130
131 unsigned long measure_updated;
132 unsigned long limits_updated;
133 char valid;
134
83#define CONFIG5_TWOSCOMP 0x01
84#define CONFIG5_TEMPOFFSET 0x02
85
86/* ADT7475 Settings */
87
88#define ADT7475_VOLTAGE_COUNT 2
89#define ADT7475_TEMP_COUNT 3
90#define ADT7475_TACH_COUNT 4

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130struct adt7475_data {
131 struct device *hwmon_dev;
132 struct mutex lock;
133
134 unsigned long measure_updated;
135 unsigned long limits_updated;
136 char valid;
137
138 u8 config4;
135 u8 config5;
136 u16 alarms;
137 u16 voltage[3][3];
138 u16 temp[7][3];
139 u16 tach[2][4];
140 u8 pwm[4][3];
141 u8 range[3];
142 u8 pwmctl[3];

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774
775 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
776 data->range[sattr->index]);
777
778 mutex_unlock(&data->lock);
779 return count;
780}
781
139 u8 config5;
140 u16 alarms;
141 u16 voltage[3][3];
142 u16 temp[7][3];
143 u16 tach[2][4];
144 u8 pwm[4][3];
145 u8 range[3];
146 u8 pwmctl[3];

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778
779 i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index),
780 data->range[sattr->index]);
781
782 mutex_unlock(&data->lock);
783 return count;
784}
785
786static ssize_t show_pwm_at_crit(struct device *dev,
787 struct device_attribute *devattr, char *buf)
788{
789 struct adt7475_data *data = adt7475_update_device(dev);
790 return sprintf(buf, "%d\n", !!(data->config4 & CONFIG4_MAXDUTY));
791}
792
793static ssize_t set_pwm_at_crit(struct device *dev,
794 struct device_attribute *devattr,
795 const char *buf, size_t count)
796{
797 struct i2c_client *client = to_i2c_client(dev);
798 struct adt7475_data *data = i2c_get_clientdata(client);
799 long val;
800
801 if (strict_strtol(buf, 10, &val))
802 return -EINVAL;
803 if (val != 0 && val != 1)
804 return -EINVAL;
805
806 mutex_lock(&data->lock);
807 data->config4 = i2c_smbus_read_byte_data(client, REG_CONFIG4);
808 if (val)
809 data->config4 |= CONFIG4_MAXDUTY;
810 else
811 data->config4 &= ~CONFIG4_MAXDUTY;
812 i2c_smbus_write_byte_data(client, REG_CONFIG4, data->config4);
813 mutex_unlock(&data->lock);
814
815 return count;
816}
817
782static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
783static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
784 set_voltage, MAX, 0);
785static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
786 set_voltage, MIN, 0);
787static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
788static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
789static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,

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889 set_pwmctrl, INPUT, 2);
890static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
891 show_pwmchan, set_pwmchan, INPUT, 2);
892static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
893 set_pwm, MIN, 2);
894static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
895 set_pwm, MAX, 2);
896
818static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0);
819static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage,
820 set_voltage, MAX, 0);
821static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage,
822 set_voltage, MIN, 0);
823static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0);
824static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 1);
825static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage,

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925 set_pwmctrl, INPUT, 2);
926static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
927 show_pwmchan, set_pwmchan, INPUT, 2);
928static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm,
929 set_pwm, MIN, 2);
930static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm,
931 set_pwm, MAX, 2);
932
933/* Non-standard name, might need revisiting */
934static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO,
935 show_pwm_at_crit, set_pwm_at_crit);
936
897static struct attribute *adt7475_attrs[] = {
898 &sensor_dev_attr_in1_input.dev_attr.attr,
899 &sensor_dev_attr_in1_max.dev_attr.attr,
900 &sensor_dev_attr_in1_min.dev_attr.attr,
901 &sensor_dev_attr_in1_alarm.dev_attr.attr,
902 &sensor_dev_attr_in2_input.dev_attr.attr,
903 &sensor_dev_attr_in2_max.dev_attr.attr,
904 &sensor_dev_attr_in2_min.dev_attr.attr,

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957 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
958 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
959 &sensor_dev_attr_pwm3.dev_attr.attr,
960 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
961 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
962 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
963 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
964 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
937static struct attribute *adt7475_attrs[] = {
938 &sensor_dev_attr_in1_input.dev_attr.attr,
939 &sensor_dev_attr_in1_max.dev_attr.attr,
940 &sensor_dev_attr_in1_min.dev_attr.attr,
941 &sensor_dev_attr_in1_alarm.dev_attr.attr,
942 &sensor_dev_attr_in2_input.dev_attr.attr,
943 &sensor_dev_attr_in2_max.dev_attr.attr,
944 &sensor_dev_attr_in2_min.dev_attr.attr,

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997 &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
998 &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
999 &sensor_dev_attr_pwm3.dev_attr.attr,
1000 &sensor_dev_attr_pwm3_freq.dev_attr.attr,
1001 &sensor_dev_attr_pwm3_enable.dev_attr.attr,
1002 &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
1003 &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
1004 &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
1005 &dev_attr_pwm_use_point2_pwm_at_crit.attr,
965 NULL,
966};
967
968struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
969
970static int adt7475_detect(struct i2c_client *client, int kind,
971 struct i2c_board_info *info)
972{

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1155 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1156
1157 data->measure_updated = jiffies;
1158 }
1159
1160 /* Limits and settings, should never change update every 60 seconds */
1161 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1162 !data->valid) {
1006 NULL,
1007};
1008
1009struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs };
1010
1011static int adt7475_detect(struct i2c_client *client, int kind,
1012 struct i2c_board_info *info)
1013{

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1196 data->pwm[INPUT][i] = adt7475_read(PWM_REG(i));
1197
1198 data->measure_updated = jiffies;
1199 }
1200
1201 /* Limits and settings, should never change update every 60 seconds */
1202 if (time_after(jiffies, data->limits_updated + HZ * 60) ||
1203 !data->valid) {
1204 data->config4 = adt7475_read(REG_CONFIG4);
1163 data->config5 = adt7475_read(REG_CONFIG5);
1164
1165 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1166 /* Adjust values so they match the input precision */
1167 data->voltage[MIN][i] =
1168 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1169 data->voltage[MAX][i] =
1170 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;

--- 57 unchanged lines hidden --- 		1205 data->config5 = adt7475_read(REG_CONFIG5);
1206
1207 for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) {
1208 /* Adjust values so they match the input precision */
1209 data->voltage[MIN][i] =
1210 adt7475_read(VOLTAGE_MIN_REG(i)) << 2;
1211 data->voltage[MAX][i] =
1212 adt7475_read(VOLTAGE_MAX_REG(i)) << 2;

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