diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/hwmon/adt7475.c | 66 |
2 files changed, 64 insertions, 3 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 957171c62324..9e640c62ebd9 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -207,6 +207,7 @@ config SENSORS_ADT7473 config SENSORS_ADT7475 tristate "Analog Devices ADT7473, ADT7475, ADT7476 and ADT7490" depends on I2C && EXPERIMENTAL + select HWMON_VID help If you say yes here you get support for the Analog Devices ADT7473, ADT7475, ADT7476 and ADT7490 hardware monitoring diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c index 72c3b754e7b6..99abfddedbc3 100644 --- a/drivers/hwmon/adt7475.c +++ b/drivers/hwmon/adt7475.c @@ -18,6 +18,7 @@ #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> +#include <linux/hwmon-vid.h> #include <linux/err.h> /* Indexes for the sysfs hooks */ @@ -110,6 +111,7 @@ #define CONFIG5_TWOSCOMP 0x01 #define CONFIG5_TEMPOFFSET 0x02 +#define CONFIG5_VIDGPIO 0x10 /* ADT7476 only */ /* ADT7475 Settings */ @@ -171,6 +173,7 @@ struct adt7475_data { u8 bypass_attn; /* Bypass voltage attenuator */ u8 has_pwm2:1; u8 has_fan4:1; + u8 has_vid:1; u32 alarms; u16 voltage[3][6]; u16 temp[7][3]; @@ -179,6 +182,9 @@ struct adt7475_data { u8 range[3]; u8 pwmctl[3]; u8 pwmchan[3]; + + u8 vid; + u8 vrm; }; static struct i2c_driver adt7475_driver; @@ -864,6 +870,35 @@ static ssize_t set_pwm_at_crit(struct device *dev, return count; } +static ssize_t show_vrm(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct adt7475_data *data = dev_get_drvdata(dev); + return sprintf(buf, "%d\n", (int)data->vrm); +} + +static ssize_t set_vrm(struct device *dev, struct device_attribute *devattr, + const char *buf, size_t count) +{ + struct adt7475_data *data = dev_get_drvdata(dev); + long val; + + if (strict_strtol(buf, 10, &val)) + return -EINVAL; + if (val < 0 || val > 255) + return -EINVAL; + data->vrm = val; + + return count; +} + +static ssize_t show_vid(struct device *dev, struct device_attribute *devattr, + char *buf) +{ + struct adt7475_data *data = adt7475_update_device(dev); + return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); +} + static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_voltage, NULL, INPUT, 0); static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_voltage, set_voltage, MAX, 0); @@ -1007,6 +1042,9 @@ static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, static DEVICE_ATTR(pwm_use_point2_pwm_at_crit, S_IWUSR | S_IRUGO, show_pwm_at_crit, set_pwm_at_crit); +static DEVICE_ATTR(vrm, S_IWUSR | S_IRUGO, show_vrm, set_vrm); +static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); + static struct attribute *adt7475_attrs[] = { &sensor_dev_attr_in1_input.dev_attr.attr, &sensor_dev_attr_in1_max.dev_attr.attr, @@ -1119,6 +1157,12 @@ static struct attribute *in5_attrs[] = { NULL }; +static struct attribute *vid_attrs[] = { + &dev_attr_cpu0_vid.attr, + &dev_attr_vrm.attr, + NULL +}; + static struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; static struct attribute_group fan4_attr_group = { .attrs = fan4_attrs }; static struct attribute_group pwm2_attr_group = { .attrs = pwm2_attrs }; @@ -1126,6 +1170,7 @@ static struct attribute_group in0_attr_group = { .attrs = in0_attrs }; static struct attribute_group in3_attr_group = { .attrs = in3_attrs }; static struct attribute_group in4_attr_group = { .attrs = in4_attrs }; static struct attribute_group in5_attr_group = { .attrs = in5_attrs }; +static struct attribute_group vid_attr_group = { .attrs = vid_attrs }; static int adt7475_detect(struct i2c_client *client, int kind, struct i2c_board_info *info) @@ -1180,6 +1225,8 @@ static void adt7475_remove_files(struct i2c_client *client, sysfs_remove_group(&client->dev.kobj, &in4_attr_group); if (data->has_voltage & (1 << 5)) sysfs_remove_group(&client->dev.kobj, &in5_attr_group); + if (data->has_vid) + sysfs_remove_group(&client->dev.kobj, &vid_attr_group); } static int adt7475_probe(struct i2c_client *client, @@ -1247,11 +1294,14 @@ static int adt7475_probe(struct i2c_client *client, data->has_voltage |= (1 << 0); /* in0 */ } - /* On the ADT7476, the +12V input pin may instead be used as VID5 */ + /* On the ADT7476, the +12V input pin may instead be used as VID5, + and VID pins may alternatively be used as GPIO */ if (id->driver_data == adt7476) { u8 vid = adt7475_read(REG_VID); if (!(vid & VID_VIDSEL)) data->has_voltage |= (1 << 4); /* in4 */ + + data->has_vid = !(adt7475_read(REG_CONFIG5) & CONFIG5_VIDGPIO); } /* Voltage attenuators can be bypassed, globally or individually */ @@ -1304,6 +1354,12 @@ static int adt7475_probe(struct i2c_client *client, if (ret) goto eremove; } + if (data->has_vid) { + data->vrm = vid_which_vrm(); + ret = sysfs_create_group(&client->dev.kobj, &vid_attr_group); + if (ret) + goto eremove; + } data->hwmon_dev = hwmon_device_register(&client->dev); if (IS_ERR(data->hwmon_dev)) { @@ -1314,11 +1370,12 @@ static int adt7475_probe(struct i2c_client *client, dev_info(&client->dev, "%s device, revision %d\n", names[id->driver_data], revision); if ((data->has_voltage & 0x11) || data->has_fan4 || data->has_pwm2) - dev_info(&client->dev, "Optional features:%s%s%s%s\n", + dev_info(&client->dev, "Optional features:%s%s%s%s%s\n", (data->has_voltage & (1 << 0)) ? " in0" : "", (data->has_voltage & (1 << 4)) ? " in4" : "", data->has_fan4 ? " fan4" : "", - data->has_pwm2 ? " pwm2" : ""); + data->has_pwm2 ? " pwm2" : "", + data->has_vid ? " vid" : ""); if (data->bypass_attn) dev_info(&client->dev, "Bypassing attenuators on:%s%s%s%s\n", (data->bypass_attn & (1 << 0)) ? " in0" : "", @@ -1472,6 +1529,9 @@ static struct adt7475_data *adt7475_update_device(struct device *dev) data->pwm[INPUT][i] = adt7475_read(PWM_REG(i)); } + if (data->has_vid) + data->vid = adt7475_read(REG_VID) & 0x3f; + data->measure_updated = jiffies; } |
