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/*
* capab.c
*
* Created on: Dec 1, 2016
* Author: jklug
*
* capabilities from EE-PROM, enumerated in /sys/devices/platform/mts-io/capability
* an associative array, written the hard way in C.
*/
/* This array is not in any order. */
struct capab_map_s {
unsigned int bitvalue;
const char *name;
};
/*
* Should match mts_eeprom.h capabilities
*/
static struct capab_map_s capabilities_map[] = {
{ CAPA_GPS, "gps"},
{ CAPA_DIN, "din"},
{ CAPA_DOUT, "dout"},
{ CAPA_ADC, "adc"},
{ CAPA_BLUETOOTH, "bluetooth"},
{ CAPA_WIFI, "wifi"},
{ CAPA_LORA, "lora"},
};
static ssize_t capab_show_value(struct device *dev, struct device_attribute *at, char *buf) {
int i;
const int count = sizeof(capabilities_map)/sizeof(capabilities_map[0]);
struct kobj_attribute *attr = (struct kobj_attribute *)at;
for (i = 0; i < count; i++) {
if (strcmp(capabilities_map[i].name, attr->attr.name) == 0) {
return snprintf(buf, 32, "%u\n", DEVICE_CAPA(id_eeprom.capa, capabilities_map[i].bitvalue) != 0);
}
}
return (ssize_t)-1;
}
static DEVICE_ATTR_RO_MTS(capa_attr_gps, "gps", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_din, "din", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_dout, "dout", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_adc, "adc", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_bt, "bluetooth", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_wifi, "wifi", capab_show_value);
static DEVICE_ATTR_RO_MTS(capa_attr_lora, "lora", capab_show_value);
static struct attribute *mts_capa_attributes[] = {
&capa_attr_gps.attr,
&capa_attr_din.attr,
&capa_attr_dout.attr,
&capa_attr_adc.attr,
&capa_attr_bt.attr,
&capa_attr_wifi.attr,
&capa_attr_lora.attr,
NULL,
};
static struct attribute_group mts_capa_attr_group = {
.attrs = mts_capa_attributes
};
static struct kobject *mts_capa_kobject = NULL;
static int mts_capab_dir_create(void)
{
mts_capa_kobject = kobject_create_and_add("capability", &mts_io_platform_device->dev.kobj);
if (!mts_capa_kobject) {
log_error("kobject_create_and_add for capability directory failed");
return -ENOMEM;
}
if (sysfs_create_group(mts_capa_kobject, &mts_capa_attr_group)) {
log_error("sysfs_create_group failed to create capability group");
return -ENOMEM;
}
return 0;
}
static void mts_capab_dir_delete(void)
{
if (mts_capa_kobject) {
kobject_put(mts_capa_kobject);
}
}
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