loic/ina260-sysfs-driver
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Change sysfs architecture and add power,current and voltage metrics

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Loic Guegan 2023-08-11 09:48:06 +02:00
parent 451a80d636
commit d43c92e2a1
1 changed files with 28 additions and 5 deletions
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33
ina260.c
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@ -16,7 +16,6 @@
#define INA260_REG_MANUFACTURER 0xFE #define INA260_REG_MANUFACTURER 0xFE
#define INA260_REG_DIE 0xFF #define INA260_REG_DIE 0xFF
#define INA260_LSB_POWER 10 // 10mW
#define INA260_IS_ATTR(_name) (strcmp(attr->attr.name, #_name) == 0) #define INA260_IS_ATTR(_name) (strcmp(attr->attr.name, #_name) == 0)
// ina260 average modes list // ina260 average modes list
@ -156,12 +155,26 @@ static ssize_t attr_metric_show(struct kobject *_kobj,
char *buf) char *buf)
{ {
int rvalue; int rvalue;
int op1, op2;
struct client_data *cdata=container_of(_kobj,struct client_data,kobj); struct client_data *cdata=container_of(_kobj,struct client_data,kobj);
if(INA260_IS_ATTR(power)){ if(INA260_IS_ATTR(power)){
if(ina260_read_register(cdata, INA260_REG_POWER,&rvalue)) if(ina260_read_register(cdata, INA260_REG_POWER,&rvalue))
return -1; return -1;
return sprintf(buf, "%d.%d\n", INA260_LSB_POWER*rvalue/1000,(INA260_LSB_POWER*rvalue) % 1000); op1=10*rvalue;
return sprintf(buf, "%d.%d\n", op1/1000,(op1) % 1000);
} else if(INA260_IS_ATTR(voltage)){
if(ina260_read_register(cdata, INA260_REG_VOLTAGE,&rvalue))
return -1;
op1=rvalue*25/100 + rvalue;
op2=rvalue*25%100;
return sprintf(buf, "%d.%03d%d\n",(op1)/1000,(op1)%1000,op2);
} else if(INA260_IS_ATTR(current)){
if(ina260_read_register(cdata, INA260_REG_CURRENT,&rvalue))
return -1;
op1=rvalue*25/100 + rvalue;
op2=rvalue*25%100;
return sprintf(buf, "%d.%03d%d\n",(op1)/1000,(op1)%1000,op2);
} }
return -1; return -1;
@ -359,13 +372,22 @@ static const struct attribute_group registers_group = {
// ----- Metrics ----- // ----- Metrics -----
static struct kobj_attribute metric_power_attribute = static struct kobj_attribute metric_power_attribute =
__ATTR(power, 0664, attr_metric_show, NULL); __ATTR(power, 0664, attr_metric_show, NULL);
static struct kobj_attribute metric_voltage_attribute =
__ATTR(voltage, 0664, attr_metric_show, NULL);
static struct kobj_attribute metric_current_attribute = {
.attr = {.name = "current", // current is a defined macro so need to do it manually
.mode = VERIFY_OCTAL_PERMISSIONS(0444) },
.show = attr_metric_show,
.store = NULL
};
static struct attribute *metrics_attrs[] = { static struct attribute *metrics_attrs[] = {
&metric_power_attribute.attr, &metric_power_attribute.attr,
&metric_voltage_attribute.attr,
&metric_current_attribute.attr,
NULL, NULL,
}; };
static const struct attribute_group metrics_group = { static const struct attribute_group metrics_group = {
.attrs = metrics_attrs, .attrs = metrics_attrs
.name = "metrics"
}; };
// ----- Fields ----- // ----- Fields -----
static struct kobj_attribute reset_field_attribute = static struct kobj_attribute reset_field_attribute =
@ -427,6 +449,7 @@ static struct attribute *fields_attrs[] = {
}; };
static const struct attribute_group fields_group = { static const struct attribute_group fields_group = {
.attrs = fields_attrs, .attrs = fields_attrs,
.name = "fields"
}; };