diff options
Diffstat (limited to 'drivers/gnss/core.c')
| -rw-r--r-- | drivers/gnss/core.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gnss/core.c b/drivers/gnss/core.c index 307894ca2725..f30ef8338b3a 100644 --- a/drivers/gnss/core.c +++ b/drivers/gnss/core.c @@ -330,6 +330,52 @@ int gnss_insert_raw(struct gnss_device *gdev, const unsigned char *buf, } EXPORT_SYMBOL_GPL(gnss_insert_raw); +static const char * const gnss_type_names[GNSS_TYPE_COUNT] = { + [GNSS_TYPE_NMEA] = "NMEA", + [GNSS_TYPE_SIRF] = "SiRF", + [GNSS_TYPE_UBX] = "UBX", +}; + +static const char *gnss_type_name(struct gnss_device *gdev) +{ + const char *name = NULL; + + if (gdev->type < GNSS_TYPE_COUNT) + name = gnss_type_names[gdev->type]; + + if (!name) + dev_WARN(&gdev->dev, "type name not defined\n"); + + return name; +} + +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct gnss_device *gdev = to_gnss_device(dev); + + return sprintf(buf, "%s\n", gnss_type_name(gdev)); +} +static DEVICE_ATTR_RO(type); + +static struct attribute *gnss_attrs[] = { + &dev_attr_type.attr, + NULL, +}; +ATTRIBUTE_GROUPS(gnss); + +static int gnss_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct gnss_device *gdev = to_gnss_device(dev); + int ret; + + ret = add_uevent_var(env, "GNSS_TYPE=%s", gnss_type_name(gdev)); + if (ret) + return ret; + + return 0; +} + static int __init gnss_module_init(void) { int ret; @@ -347,6 +393,9 @@ static int __init gnss_module_init(void) goto err_unregister_chrdev; } + gnss_class->dev_groups = gnss_groups; + gnss_class->dev_uevent = gnss_uevent; + pr_info("GNSS driver registered with major %d\n", MAJOR(gnss_first)); return 0; |